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Sample records for mg kg-1 sd

  1. Reversal of rocuronium-induced (1.2 mg kg-1) profound neuromuscular block by accidental high dose of sugammadex (40 mg kg-1).

    NARCIS (Netherlands)

    Molina, A.L.; Boer, H.D. de; Klimek, M.; Heeringa, M.; Klein, J.

    2007-01-01

    Sugammadex is the first selective relaxant binding agent and reverses rocuronium-induced neuromuscular block. A case is reported in which a patient accidentally received a high dose of sugammadex (40 mg kg-1) to reverse a rocuronium-induced (1.2 mg kg-1) profound neuromuscular block. A fast and

  2. Sugammadex 4.0 mg kg-1 reversal of deep rocuronium-induced neuromuscular blockade

    DEFF Research Database (Denmark)

    Yu, Buwei; Wang, Xiangrui; Hansen, Søren Helbo

    2014-01-01

    Objective: Maintenance of deep Neuro Muscular Blockade (NMB) until the end of surgery may be beneficial in some surgical procedures. The selective relaxant binding agent sugammadex rapidly reverses deep levels of rocuronium-induced NMB. The purpose of this study was to evaluate the efficacy...... and safety of sugammadex 4.0 mg kg-1 for reversal of deep rocuronium-induced NMB in Chinese and Caucasian patients. Methods: This was an open-label, multicenter, prospective Phase III efficacy study in adult American Society of Anesthesiologists Class 1-3 patients scheduled for surgery under general...... anesthesia and requiring deep NMB. All patients received intravenous propofol and opioids for induction and maintenance of anesthesia, and a single intubation dose of rocuronium 0.6 mg/kg, with maintenance doses of 0.1-0.2 mg/kg as required. Sugammadex 4.0 mg/kg was administered after the last dose...

  3. Efficacy, safety and pharmacokinetics of sugammadex 4 mg kg-1 for reversal of deep neuromuscular blockade in patients with severe renal impairment

    NARCIS (Netherlands)

    Panhuizen, I. F.; Gold, S. J. A.; Buerkle, C.; Snoeck, M. M. J.; Harper, N. J. N.; Kaspers, M. J. G. H.; van den Heuvel, M. W.; Hollmann, M. W.

    2015-01-01

    This study evaluated efficacy and safety of sugammadex 4 mg kg(-1) for deep neuromuscular blockade (NMB) reversal in patients with severe renal impairment (creatinine clearance [CLCR] <30 ml min(-1)) vs those with normal renal function (CLCR ≥80 ml min(-1)). Sugammadex 4 mg kg(-1) was administered

  4. Postoperative impairment of motor function at train-of-four ratio ≥0.9 cannot be improved by sugammadex (1 mg kg-1).

    Science.gov (United States)

    Baumüller, E; Schaller, S J; Chiquito Lama, Y; Frick, C G; Bauhofer, T; Eikermann, M; Fink, H; Blobner, M

    2015-05-01

    A train-of-four ratio (TOFR) ≥0.9 measured by quantitative neuromuscular monitoring is accepted as an indication of sufficient neuromuscular recovery for extubation, even though many postsynaptic acetylcholine receptors may still be inhibited. We investigated whether antagonism with sugammadex after spontaneous recovery to TOFR≥0.9 further improves muscle function or subjective well-being. Following recovery to TOFR≥0.9 and emergence from anaesthesia, 300 patients randomly received either sugammadex 1.0 mg kg(-1) or placebo. Fine motor function (Purdue Pegboard Test) and maximal voluntary grip strength were measured before and after surgery (before and after test drug administration). At discharge from the postanaesthesia care unit, well-being was assessed with numerical analogue scales and the Quality-of-Recovery Score 40 (QoR-40). Patients' fine motor function [6 (sd 4) vs 15 (3) pegs (30 s)(-1), Psugammadex or placebo, motor function was significantly improved in both groups but did not reach the preoperative level. There was no difference between groups at any time. Global well-being was unaffected (QoR-40: placebo, 174 vs 185; sugammadex, 175 vs 186, P>0.05). Antagonizing rocuronium at TOF≥0.9 with sugammadex 1.0 mg kg(-) (1) did not improve patients' motor function or well-being when compared with placebo. Our data support the view that TOFR≥0.9 measured by electromyography signifies sufficient recovery of neuromuscular function. The trial is registered at ClinicalTrials.gov (NCT01101139). © The Author 2014. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  5. Efficacy, safety and pharmacokinetics of sugammadex 4 mg kg-1 for reversal of deep neuromuscular blockade in patients with severe renal impairment.

    Science.gov (United States)

    Panhuizen, I F; Gold, S J A; Buerkle, C; Snoeck, M M J; Harper, N J N; Kaspers, M J G H; van den Heuvel, M W; Hollmann, M W

    2015-05-01

    This study evaluated efficacy and safety of sugammadex 4 mg kg(-1) for deep neuromuscular blockade (NMB) reversal in patients with severe renal impairment (creatinine clearance [CLCR] Sugammadex 4 mg kg(-1) was administered at 1-2 post-tetanic counts for reversal of rocuronium NMB. Primary efficacy variable was time from sugammadex to recovery to train-of-four (T4/T1) ratio 0.9. Equivalence between groups was demonstrated if two-sided 95% CI for difference in recovery times was within -1 to +1 min interval. Pharmacokinetics of rocuronium and overall safety were assessed. The intent-to-treat group comprised 67 patients (renal n=35; control n=32). Median (95% CI) time from sugammadex to recovery to T4/T1 ratio 0.9 was 3.1 (2.4-4.6) and 1.9 (1.6-2.8) min for renal patients vs controls. Estimated median (95% CI) difference between groups was 1.3 (0.6-2.4) min; thus equivalence bounds were not met. One control patient experienced acceleromyography-determined NMB recurrence, possibly as a result of premature sugammadex (4 mg kg(-1)) administration, with no clinical evidence of NMB recurrence observed. Rocuronium, encapsulated by Sugammadex, was detectable in plasma at day 7 in 6 patients. Bioanalytical data for sugammadex were collected but could not be used for pharmacokinetics. Sugammadex 4 mg kg(-1) provided rapid reversal of deep rocuronium-induced NMB in renal and control patients. However, considering the prolonged sugammadex-rocuronium complex exposure in patients with severe renal impairment, current safety experience is insufficient to support recommended use of sugammadex in this population. NCT00702715. © The Author 2015. Published by Oxford University Press on behalf of the British Journal of Anaesthesia. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  6. ELECTRON-CAPTURE AND β-DECAY RATES FOR sd-SHELL NUCLEI IN STELLAR ENVIRONMENTS RELEVANT TO HIGH-DENSITY O–NE–MG CORES

    Energy Technology Data Exchange (ETDEWEB)

    Suzuki, Toshio [Department of Physics and Graduate School of Integrated Basic Sciences, College of Humanities and Sciences, Nihon University Sakurajosui 3-25-40, Setagaya-ku, Tokyo 156-8550 (Japan); Toki, Hiroshi [Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka 567-0047 (Japan); Nomoto, Ken’ichi, E-mail: suzuki@phys.chs.nihon-u.ac.jp [Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583 (Japan)

    2016-02-01

    Electron-capture and β-decay rates for nuclear pairs in the sd-shell are evaluated at high densities and high temperatures relevant to the final evolution of electron-degenerate O–Ne–Mg cores of stars with initial masses of 8–10 M{sub ⊙}. Electron capture induces a rapid contraction of the electron-degenerate O–Ne–Mg core. The outcome of rapid contraction depends on the evolutionary changes in the central density and temperature, which are determined by the competing processes of contraction, cooling, and heating. The fate of the stars is determined by these competitions, whether they end up with electron-capture supernovae or Fe core-collapse supernovae. Since the competing processes are induced by electron capture and β-decay, the accurate weak rates are crucially important. The rates are obtained for pairs with A = 20, 23, 24, 25, and 27 by shell-model calculations in the sd-shell with the USDB Hamiltonian. Effects of Coulomb corrections on the rates are evaluated. The rates for pairs with A = 23 and 25 are important for nuclear Urca processes that determine the cooling rate of the O–Ne–Mg core, while those for pairs with A = 20 and 24 are important for the core contraction and heat generation rates in the core. We provide these nuclear rates at stellar environments in tables with fine enough meshes at various densities and temperatures for studies of astrophysical processes sensitive to the rates. In particular, the accurate rate tables are crucially important for the final fates of not only O–Ne–Mg cores but also a wider range of stars, such as C–O cores of lower-mass stars.

  7. ELECTRON-CAPTURE AND β-DECAY RATES FOR sd-SHELL NUCLEI IN STELLAR ENVIRONMENTS RELEVANT TO HIGH-DENSITY O–NE–MG CORES

    International Nuclear Information System (INIS)

    Suzuki, Toshio; Toki, Hiroshi; Nomoto, Ken’ichi

    2016-01-01

    Electron-capture and β-decay rates for nuclear pairs in the sd-shell are evaluated at high densities and high temperatures relevant to the final evolution of electron-degenerate O–Ne–Mg cores of stars with initial masses of 8–10 M ⊙ . Electron capture induces a rapid contraction of the electron-degenerate O–Ne–Mg core. The outcome of rapid contraction depends on the evolutionary changes in the central density and temperature, which are determined by the competing processes of contraction, cooling, and heating. The fate of the stars is determined by these competitions, whether they end up with electron-capture supernovae or Fe core-collapse supernovae. Since the competing processes are induced by electron capture and β-decay, the accurate weak rates are crucially important. The rates are obtained for pairs with A = 20, 23, 24, 25, and 27 by shell-model calculations in the sd-shell with the USDB Hamiltonian. Effects of Coulomb corrections on the rates are evaluated. The rates for pairs with A = 23 and 25 are important for nuclear Urca processes that determine the cooling rate of the O–Ne–Mg core, while those for pairs with A = 20 and 24 are important for the core contraction and heat generation rates in the core. We provide these nuclear rates at stellar environments in tables with fine enough meshes at various densities and temperatures for studies of astrophysical processes sensitive to the rates. In particular, the accurate rate tables are crucially important for the final fates of not only O–Ne–Mg cores but also a wider range of stars, such as C–O cores of lower-mass stars

  8. Effects on proliferation and cell cycle of irradiated KG-1 cells stimulated by CM-CSF

    International Nuclear Information System (INIS)

    Guo Dehuang; Dong Bo; Wen Gengyun; Luo Qingliang; Mao Bingzhi

    2000-01-01

    In order to explore the variety of cell proliferation and cell cycle after exposure to ionizing radiation, the responses of irradiated KG-1 cells of the human myeloid leukemia stimulated by GM-CSF, the most common used cytokine in clinic, were investigated. The results showed that GM-CSF enhance KG-1 cells proliferation, reduce G0/G1 block, increase S phase and G2/M phase. The stimulation effects of the GM-CSF are more effective in irradiated group than in control group

  9. Ionizing radiation effects on the KG1A primitive hematopoietic cell line

    International Nuclear Information System (INIS)

    Clave, Emmanuel; Carosella, Edgardo D.; Gluckman, Eliane; Dubray, Bernard; Socie, Gerard

    1996-01-01

    Purpose: Better understanding of radiation-induced effects on the hematopoietic system is important in both the context of therapeutic intervention and accidental exposure. However, direct study of these effects on the hematopoietic stem cell pool is hampered by the small number of accessible cells. We, thus, studied radiation-induced effects on the KG1a stem cell line. Methods and Materials: We confirmed and extended the immunophenotype of KG1a with monoclonal antibodies, established a radiation survival curve, and quantified mRNAs by Northern blotting 30 min after 1, 2, and 3 Gy of ionizing radiation (IR) and followed for up to 48 h after a 3 Gy dose. Cell cycle status and apoptosis were assessed by fluorescent-activated cell sorter (FACS) analysis, cell morphology, and DNA fragmentation. Results: KG1a was found to be CD34+, CD7+, Thy1 low, CD38 low, lineage negative (neg), C-KITneg and HLA-DRneg, a phenotype consistent with a primitive hematopoietic origin. This immunophenotype was not altered by x-ray irradiation. The D 0 value was 1.75 Gy. We showed a time-dependent variation of c-jun mRNA expression with an early and transient dose-dependent induction followed by a second increase at 24 and 48 h: a biphasic dose-dependent variation of bcl-2 expression 30 min after irradiation with a reduction of mRNA level at 1 Gy, and a normalization at higher doses and stable levels of mRNA for c-fos, c-myc, G-CSF, GM-CSF, IL-6, TNF-α, TGF-β, and MIP-1α genes. Cell cycle analysis showed the absence of G1/S phase arrest, a point consistent with the absence of detection of P53 mRNA by Northern blot analysis. The dose-dependent G2/M phase arrest was not followed by significant apoptotic cell death. Conclusion: Taken together, this data indicates that radiation-induced cell death of KG1a, a cell line that has a relatively high D 0 value, does not seem to be the result of the apoptotic pathway but occurs subsequent to a G2/M phase arrest

  10. [Experimental study on aging effect of Angelica sinensis polysaccharides combined with cytarabine on human leukemia KG1alpha cell lines].

    Science.gov (United States)

    Xu, Chun-Yan; Geng, Shan; Liu, Jun; Zhu, Jia-Hong; Zhang, Xian-Ping; Jiang, Rong; Wang, Ya-Ping

    2014-04-01

    The latest findings of our laboratory showed that Angelica sinensis polysaccharide (ASP) showed a definite effect in regulating the aging of hematopoietic stem cells. Leukemia is a type of malignant hematopoietic tumor in hematopoietic stem cells. There have been no relevant reports about ASP's effect in regulating the aging of leukemia cells. In this study, human acute myeloid leukemia (AML) KG1alpha cell lines in logarithmic growth phase were taken as the study object, and were divided into the ASP group, the cytarabine (Ara-C) group, the ASP + Ara-C group and the control group. The groups were respectively treated with different concentration of ASP, Ara-C and ASP + Ara-C for different periods, with the aim to study the effect of ASP combined with Ara-C in regulating the aging of human acute myeloid leukemia KG1alpha cell lines and its relevant mechanism. The results showed that ASP, Ara-C and ASP + Ara-C could obviously inhibit KG1alpha cell proliferation in vitro, block the cells in G0/G1 phase. The cells showed the aging morphological feature. The percentage of positive stained aging cells was dramatically increased, and could significantly up-regulate the expression of aging-related proteins P16 and RB, which were more obvious in the ASP + Ara-C group. In conclusion, the aging mechanism of KG1alpha cell induced by ASP and Ara-C may be related to the regulation of the expression of aging-related proteins, suggesting that the combined administration of ASP and anticancer drugs plays a better role in the treatment of leukemia .

  11. Interference-free determination of sub ng kg-1 levels of long-lived 93Zr in the presence of high concentrations (μg kg-1) of 93Mo and 93Nb using ICP-MS/MS.

    Science.gov (United States)

    Petrov, Panayot; Russell, Ben; Douglas, David N; Goenaga-Infante, Heidi

    2018-01-01

    Long-lived high abundance radionuclides are of increasing interest with regard to decommissioning of nuclear sites and longer term nuclear waste storage and disposal. In many cases, no routine technique is available for their measurement in nuclear waste and low-level (ng kg -1 ) environmental samples. Recent advances in ICP-MS technology offer attractive features for the selective and sensitive determination of a wide range of long-lived radionuclides. In this work, inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS)-based methodology, suitable for accurate routine determinations of 93 Zr at very low (ng kg -1 ) levels in the presence of high levels (μg kg -1 ) of the isobaric interferents 93 Nb and 93 Mo (often present in nuclear waste samples), is reported for the first time. Additionally, a novel and systematic strategy for method development based on the use of non-radioactive isotopes is proposed. It relies on gas-phase chemical reactions for different molecular ion formation to achieve isobaric interference removal. Using cell gas mixtures of NH 3 /He/H 2 or H 2 /O 2 , and suitable mass shifts, the signal from the 93 Nb and 93 Mo isobaric interferences on 93 Zr were suppressed by up to 5 orders of magnitude. The achieved limit of detection for 93 Zr was 1.3 × 10 -5  Bq g -1 (equivalent to 0.14 ng kg -1 ). The sample analysis time is 2 min, which represents a significant improvement in terms of sample throughput, compared to liquid scintillation counting methods. The method described here can be used for routine measurements of 93 Zr at environmentally relevant levels. It can also be combined with radiometric techniques for use towards the standardisation of 93 Zr measurements. Graphical abstract Interference-free determination of 93 Zr in the presence of high concentrations of isobaric 93 Mo and 93 Nb by ICP-MS/MS.

  12. The regulation effect of STAT 5 signaling pathway on the cell cycle progression of irradiated KG-1 cells

    International Nuclear Information System (INIS)

    Guo Dehuang; Dong Bo; Luo Qingliang; Wen Gengyun; Mao Bingzhi

    2000-01-01

    The author investigated the role of the JAK/STAT signaling pathway regulating cell cycle progression in the irradiated KG-1 cells. By permanent transfecting the cells with DN-STAT 5 cDNA to block the JAK/STAT signaling pathway and then transient transfecting with cyclin D 1 or cyclin B 1 cDNA, the effects of cyclin D 1 protein and cyclin B 1 protein on the cell cycle progression were examined. Results showed that after irradiation with 8Gy 60 Co rays, the irradiated KG-1 cells transfected with only DN-STAT 5 cDNA can not recover form the G 1 arrest, even though GM-CSF was added. Meanwhile, the cells transfected with both the DN-STAT 5 cDNA and cyclin D 1 cDNA or cyclin B 1 cDNA can recover from the G 1 arrest or the G 2 arrest to a great extent. Thus, it was proved indirectly that the JAK/STAT signaling pathway activated by GM-CSF regulated the cell cycle progression through cyclin D 1 and cyclin B 1 protein

  13. Salinomycin overcomes ABC transporter-mediated multidrug and apoptosis resistance in human leukemia stem cell-like KG-1a cells

    International Nuclear Information System (INIS)

    Fuchs, Dominik; Daniel, Volker; Sadeghi, Mahmoud; Opelz, Gerhard; Naujokat, Cord

    2010-01-01

    Leukemia stem cells are known to exhibit multidrug resistance by expression of ATP-binding cassette (ABC) transporters which constitute transmembrane proteins capable of exporting a wide variety of chemotherapeutic drugs from the cytosol. We show here that human promyeloblastic leukemia KG-1a cells exposed to the histone deacetylase inhibitor phenylbutyrate resemble many characteristics of leukemia stem cells, including expression of functional ABC transporters such as P-glycoprotein, BCRP and MRP8. Consequently, KG-1a cells display resistance to the induction of apoptosis by various chemotherapeutic drugs. Resistance to apoptosis induction by chemotherapeutic drugs can be reversed by cyclosporine A, which effectively inhibits the activity of P-glycoprotein and BCRP, thus demonstrating ABC transporter-mediated drug resistance in KG-1a cells. However, KG-1a are highly sensitive to apoptosis induction by salinomycin, a polyether ionophore antibiotic that has recently been shown to kill human breast cancer stem cell-like cells and to induce apoptosis in human cancer cells displaying multiple mechanisms of drug and apoptosis resistance. Whereas KG-1a cells can be adapted to proliferate in the presence of apoptosis-inducing concentrations of bortezomib and doxorubicin, salinomycin does not permit long-term adaptation of the cells to apoptosis-inducing concentrations. Thus, salinomycin should be regarded as a novel and effective agent for the elimination of leukemia stem cells and other tumor cells exhibiting ABC transporter-mediated multidrug resistance.

  14. Final report of the safety assessment of Alcohol Denat., including SD Alcohol 3-A, SD Alcohol 30, SD Alcohol 39, SD Alcohol 39-B, SD Alcohol 39-C, SD Alcohol 40, SD Alcohol 40-B, and SD Alcohol 40-C, and the denaturants, Quassin, Brucine Sulfate/Brucine, and Denatonium Benzoate.

    Science.gov (United States)

    2008-01-01

    Alcohol Denat. is the generic term used by the cosmetics industry to describe denatured alcohol. Alcohol Denat. and various specially denatured (SD) alcohols are used as cosmetic ingredients in a wide variety of products. Many denaturants have been previously considered, on an individual basis, as cosmetic ingredients by the Cosmetic Ingredient Review (CIR) Expert Panel, whereas others, including Brucine and Brucine Sulfate, Denatonium Benzoate, and Quassin, have not previously been evaluated. Quassin is a bitter alkaloid obtained from the wood of Quassia amara. Quassin has been used as an insect antifeedant and insecticide and several studies demonstrate its effectiveness. At oral doses up to 1000 mg/kg using rats, Quassin was not toxic in acute and short-term tests, but some reversible piloerection, decrease in motor activity, and a partial loss of righting reflex were found in mice at 500 mg/kg. At 1000 mg/kg given intraperitoneally (i.p.), all mice died within 24 h of receiving treatment. In a cytotoxicity test with brine shrimp, 1 mg/ml of Quassin did not possess any cytotoxic or antiplasmodial activity. Quassin administered to rat Leydig cells in vitro at concentrations of 5-25 ng/ml inhibited both the basal and luteinizing hormone (LH)-stimulated testosterone secretion in a dose-related fashion. Quassin at doses up to 2.0 g/kg in drinking water using rats produced no significant effect on the body weights, but the mean weights of the testes, seminal vesicles, and epididymides were significantly reduced, and the weights of the anterior pituitary glands were significantly increased. The sperm counts and levels of LH, follicle-stimulating hormone (FSH), and testosterone were significantly lower in groups treated with Quassin. Brucine is a derivative of 2-hydroxystrychnine. Swiss-Webster mice given Brucine base, 30 ml/kg, had an acute oral LD(50) of 150 mg/kg, with central nervous system depression followed by convulsions and seizures in some cases. In those

  15. Protonation thermodynamics of some aminophenol derivatives in NaCl(aq) (0 ≤ I ≤3 mol . kg-1) at T = 298.15 K

    International Nuclear Information System (INIS)

    Bretti, Clemente; De Stefano, Concetta; Foti, Claudia; Sammartano, Silvio; Vianelli, Giuseppina

    2012-01-01

    Highlights: → Protonation thermodynamics of four aminophenol derivatives were determined. → Dependence on ionic strength was analysed by using different models. → Neutral species activity coefficient was determined by distribution measurements. → Acid-base behaviour of this ligand class was modelled. - Abstract: The acid-base properties of four aminophenol derivatives, namely m-aminophenol (L1), 4-amino-2-hydroxytoluene (L2), 2-amino-5-ethylphenol (L3) and 5-amino-4-chloro-o-cresol (L4), are studied by potentiometric and titration calorimetric measurements in NaCl (aq) (0 ≤ I ≤ 3 mol . kg -1 ) at T = 298.15 K. The dependence of the protonation constants on ionic strength is modelled by the Debye-Hueckel, SIT (Specific ion Interaction Theory) and Pitzer equations. Therefore, the values of protonation constants at infinite dilution and the relative interaction coefficients are calculated. The dependence of protonation enthalpies on ionic strength is also determined. Distribution (2-methyl-1-propanol/aqueous solution) measurements allowed us to determine the Setschenow coefficients and the activity coefficients of neutral species. Experimental results show that these compounds behave in a very similar way, and common class parameters are reported, in particular for the dependence on ionic strength of both protonation constants and protonation enthalpies.

  16. The hydrolysis and precipitation of Pd(II) in 0.6 mol kg-1 NaCl: A potentiometric, spectrophotometric, and EXAFS study

    International Nuclear Information System (INIS)

    Boily, Jean-Francois F.; Seward, Terry M.; Charnock, John M.

    2007-01-01

    The hydrolysis of palladium was investigated in 0.6 mol kg -1 NaCl at 298.2 K. Potentiometric titrations of solutions at various total concentrations of palladium(II) revealed that dilute (millimolar) conditions can be used to monitor the proton release due to hydrolysis reactions up to 2 protons per palladium(II) as long as the equilibration time is kept small. Spectrophotometric titrations were used to corroborate the homogeneous changes in speciation for the PdCl 3 OH 2- species and to extract its correlative molar absorption coefficients in the 210-320 nm range. The molar absorption coefficients are similar to those of PdCl42- but exhibit a broader distribution of excitation energies resulting from the blue shift of the dominant charge transfer bands due to the presence of OH-. The longer-term potentiometric titrations systematically yielded, on the other hand, precipitates which matured over a period of 6 weeks and resulted in a more extensive release of protons to the solution. Precipitation experiments at six different total palladium(II) concentrations in the 3-11 pH range showed the dominant precipitating phase as Pd(OH)1.72Cl0.28. The coordination environment of Pd in this solid was investigated by extended X-ray absorption fine structure spectroscopy (EXAFS) and yielded an average 1.75 O and 0.25 Cl per Pd atoms with a Pd-O distance of 2.0 (angstrom) and Pd-Cl of 2.1 (angstrom). Finally, the precipitation experiments showed the final products to be of larger solubility than a literature Pd(OH)2 solubility study in which the KCl media induced a solid phase transformation to Pd(OH)1.72Cl0.28. Polynuclear complexes Pdq(OH)r2q-r with q=r=[3,9] explain the combined precipitation and hydrolysis data and may represent subsets of [Pd(OH)2]n and/or [Pd(OH)1.72Cl0.28]n chains coiled into nanometer-sized spheroids previously described in the literature

  17. Quasi-molecular states in sd-shell nuclei

    International Nuclear Information System (INIS)

    Kubono, S.; Ikeda, N.; Nomura, T.

    1988-08-01

    Quasi-molecular states near and below the threshold of the molecular configuration in sd-shell nuclei are discussed using recent experimental data with particle-gamma coincidence method and particle-particle coincidence method. Possible quasi-molecular states have been identified in 24 Mg as well as in 28 Si and 32 S. The important role of quasi-molecular states are discussed, specifically for the shape evolution of nuclei as a function of excitation energy and angular momentum. (author)

  18. SD card projects using the PIC microcontroller

    CERN Document Server

    Ibrahim, Dogan

    2010-01-01

    PIC Microcontrollers are a favorite in industry and with hobbyists. These microcontrollers are versatile, simple, and low cost making them perfect for many different applications. The 8-bit PIC is widely used in consumer electronic goods, office automation, and personal projects. Author, Dogan Ibrahim, author of several PIC books has now written a book using the PIC18 family of microcontrollers to create projects with SD cards. This book is ideal for those practicing engineers, advanced students, and PIC enthusiasts that want to incorporate SD Cards into their devices. SD cards are che

  19. Nano-hydroxyapatite particles induce apoptosis on MC3T3-E1 cells and tissue cells in SD rats

    Science.gov (United States)

    Wang, Liting; Zhou, Gang; Liu, Haifeng; Niu, Xufeng; Han, Jingyun; Zheng, Lisha; Fan, Yubo

    2012-04-01

    While the advantages of nanomaterials are being increasingly recognized, their potential toxicity is drawing more and more attention and concern. In this study, we explore the toxicity mechanism of 20-30 nm rod-shaped hydroxyapatite (HA) nanoparticles in vitro and in vivo. The nanoparticles were prepared by precipitation and characterized by IR, XRD and TEM. Concentrations of 0 μg mL-1, 10 μg mL-1, 100 μg mL-1, 1 mg mL-1, and 10 mg mL-1 were applied to the MC3T3-E1 cells for viability (MTT-test). Based on the characteristic differences of the two methods of cell death, the morphological features of the MC3T3-E1 cell line co-cultured with nano-hydroxyapatite (n-HA) (10 mg mL-1) for 24 h were also observed by TEM. Furthermore, important serum biochemical markers and histopathological examinations were used to evaluate the potential toxicological effect of n-HA on the major organs of SD rats injected intraperitoneally with n-HA (33.3 mg kg-1 body weight). In the results, we found cell growth inhibition and apoptosis in MC3T3-E1 cells co-cultured with n-HA. Moreover, apoptosis but not necrosis was illustrated in liver and renal tissue by using histopathology slices and serum biochemical markers. It suggests that apoptosis may be the possible mechanism of n-HA toxicity and provides a better understanding of the biocompatibility of nanomaterials applied in human bone repair.

  20. Understanding Nuclei in the upper sd - shell

    OpenAIRE

    Sarkar, M. Saha; Bisoi, Abhijit; Ray, Sudatta; Kshetri, Ritesh; Sarkar, S.

    2013-01-01

    Nuclei in the upper-$sd$ shell usually exhibit characteristics of spherical single particle excitations. In the recent years, employment of sophisticated techniques of gamma spectroscopy has led to observation of high spin states of several nuclei near A$\\simeq$ 40. In a few of them multiparticle, multihole rotational states coexist with states of single particle nature. We have studied a few nuclei in this mass region experimentally, using various campaigns of the Indian National Gamma Array...

  1. Clustering correlations and triaxiality in the sd-shell region

    International Nuclear Information System (INIS)

    Taniguchi, Yasutaka; Kimura, Masaaki; Kanada-En'yo, Yoshiko; Horiuchi, Hisashi

    2011-01-01

    Effects of cluster correlations on triaxiality have been studied using the antisymmetrized molecular dynamics. Low-lying states in 28 Si and 40 Ca are obtained by the generator coordinate method (GCM), and the GCM basis are calculated by energy variations with constraints on quadrupole deformation parameter β and inter-cluster distance. The GCM obtain prolate superdeformed (SD) states in 28 Si and triaxial normal-deformed (ND) states in 40 Ca, which contain prolate α- 24 Mg and triaxial α- 36 Ar cluster structure components, respectively. Different shapes of prolate 24 Mg and oblate 36 Ar clusters cause difference of triaxiality of total systems. Cluster correlations which have oblate cluster enhance triaxiality in excited states. (author)

  2. Is sdLDL a valuable screening tool for cardiovascular disease in ...

    African Journals Online (AJOL)

    Radwa Momtaz Abdelsamie Zaki Khalil

    Lipoprotein Cholesterol; LDL I, large buoyant LDL; LDL II, intermediate density LDL; LDL III, smaller dense LDL; .... triglycerides >_150 mg, high density lipoprotein (HDL) <40 mg/dl in men ... sion of phenotype B.4,12 For a given triglyceride level, women were .... that sdLDL /LDL ratio is a very strong predictor of CHD in men;.

  3. Are sdAs helium core stars?

    Directory of Open Access Journals (Sweden)

    Pelisoli Ingrid

    2017-12-01

    Full Text Available Evolved stars with a helium core can be formed by non-conservative mass exchange interaction with a companion or by strong mass loss. Their masses are smaller than 0.5 M⊙. In the database of the Sloan Digital Sky Survey (SDSS, there are several thousand stars which were classified by the pipeline as dwarf O, B and A stars. Considering the lifetimes of these classes on the main sequence, and their distance modulus at the SDSS bright saturation, if these were common main sequence stars, there would be a considerable population of young stars very far from the galactic disk. Their spectra are dominated by Balmer lines which suggest effective temperatures around 8 000-10 000 K. Several thousand have significant proper motions, indicative of distances smaller than 1 kpc. Many show surface gravity in intermediate values between main sequence and white dwarf, 4.75 < log g < 6.5, hence they have been called sdA stars. Their physical nature and evolutionary history remains a puzzle. We propose they are not H-core main sequence stars, but helium core stars and the outcomes of binary evolution. We report the discovery of two new extremely-low mass white dwarfs among the sdAs to support this statement.

  4. Understanding nuclei in the upper sd - shell

    Energy Technology Data Exchange (ETDEWEB)

    Sarkar, M. Saha; Bisoi, Abhijit; Ray, Sudatta [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064 (India); Kshetri, Ritesh [Nuclear Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064, India and Sidho-Kanho-Birsha University, Purulia - 723101 (India); Sarkar, S. [Indian Institute of Engineering Science and Technology, Shibpur, Howrah - 711103 (India)

    2014-08-14

    Nuclei in the upper-sd shell usually exhibit characteristics of spherical single particle excitations. In the recent years, employment of sophisticated techniques of gamma spectroscopy has led to observation of high spin states of several nuclei near A ≃ 40. In a few of them multiparticle, multihole rotational states coexist with states of single particle nature. We have studied a few nuclei in this mass region experimentally, using various campaigns of the Indian National Gamma Array setup. We have compared and combined our empirical observations with the large-scale shell model results to interpret the structure of these nuclei. Indication of population of states of large deformation has been found in our data. This gives us an opportunity to investigate the interplay of single particle and collective degrees of freedom in this mass region.

  5. Isospin symmetry breaking in sd shell nuclei

    International Nuclear Information System (INIS)

    Lam, Y.W.

    2011-12-01

    In the thesis, we develop a microscopic approach to describe the isospin-symmetry breaking effects in sd-shell nuclei. The work is performed within the nuclear shell model. A realistic isospin-conserving Hamiltonian is perfected by a charge-dependent part consisting of the Coulomb interaction and Yukawa-type meson exchange potentials to model charge-dependent forces of nuclear origin. The extended database of the experimental isobaric mass multiplet equation coefficients was compiled during the thesis work and has been used in a fit of the Hamiltonian parameters. The constructed Hamiltonian provides an accurate theoretical description of the isospin mixing nuclear states. A specific behaviour of the IMME (Isobaric Multiplet Mass Equation) coefficients have been revealed. We present two important applications: (i) calculations of isospin-forbidden proton emission amplitudes, which is often of interest for nuclear astrophysics, and (ii) calculation on corrections to nuclear Fermi beta decay, which is crucial for the tests of fundamental symmetries of the weak interaction. (author)

  6. MASALAH MOTIVASI BELAJAR SISWA SD PADA IPS

    Directory of Open Access Journals (Sweden)

    Erlisnawati Erlisnawati

    2016-09-01

    Full Text Available Masalah Motivasi Siswa SD pada ilmu pengetahuan Sosial. Motivasi adalah hal yang sangat penting yang mempengaruhi kegiatan / pekerjaan yang dilakukan oleh individu, termasuk yang mempengaruhi siswa dalam kegiatan belajar. Motivasi adalah salah satu elemen yang paling penting dalam pengajaran yang efektif. Pembelajaran diikuti oleh siswa yang termotivasi untuk menjadi benar-benar menyenangkan, terutama untuk guru. Siswa termotivasi untuk belajar sesuatu akan menggunakan proses kognitif yang lebih tinggi belajar dan menyerap dan mengingat lebih dari itu. Motivasi sebagai proses internal yang memungkinkan, membimbing dan mempertahankan perilaku dari waktu ke waktu. Ada beberapa teori motivasi yaitu: teori perilaku, teori kebutuhan, teori atribusi, teori belajar mandiri dan teori harapan. Motivasi dipengaruhi oleh faktor intrinsik dan faktor ekstinsik. Guru harus mengetahui kondisi ketika siswa termotivasi dan ketika kondisi siswa tidak termotivasi. Untuk itu seorang guru harus memiliki kemampuan untuk memotivasi siswa. Adapun cara yang bisa dilakukan untuk memotivasi guru untuk meningkatkan siswa adalah untuk membangkitkan minat, menjaga rasa ingin tahu, menggunakan berbagai cara yang menarik menyajikan, membantu siswa menentukan target mereka sendiri. Pembelajaran yang dilakukan oleh siswa dengan mitivasi tinggi akan menciptakan proses pembelajaran yang efektif.Kata kunci: masalah, motivasi, ilmu pengetahuan sosial, sekolah dasarMotivation is a very important thing that affects the activities / work performed by the individual, including that affect students in learning activities. Motivation is one of the most important elements in effective teaching. Learning followed by students who are motivated to be really fun, especially for teachers. Students are motivated to learn something will use higher cognitive processes learn and absorb and remember more of it. Motivation as internal processes that enable, guide and sustain behavior over time. There

  7. Resonances in s-d shell nuclei

    International Nuclear Information System (INIS)

    Schiffer, J.P.

    1981-01-01

    It appears that the system we have studied here, 24 Mg( 16 O, 12 C) 28 Si representing 40 Ca as the composite nucleus, is perhaps the heaviest one that exhibits strong enough resonances that quantitative measurements may be contemplated. But we have uncovered only a small corner of what is there and even within this system a huge amount of work remains. The nature of these resonances is not yet clear. The sequence may perhaps have an explanation that is schematically outlined, namely that there are several families of quasistationary states in 40 Ca, but that the slopes of these families do not necessarily coincide with the slope of the grazing partial waves that provide us with a narrow transparent strip of a window on the underlying structure of the nucleus. We must concentrate a lot of effort and ingenuity in order to maximize the information we gather through this window and only then may we hope to sensibly attempt forming hypotheses about the underlying simple pattern

  8. SD-PAMs: What, Where, When and How?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This paper examines what ''sustainable development policies and measures'' (SD-PAMs) could be, and how they could be implemented and could fit into a post-2012 climate regime. This paper assumes that the option to implement SD-PAMs instead of quantified GHG emission commitments post-2012 is an option that would be likely to be only open to non-Annex I countries. There are several key, but unanswered, questions related to SD-PAMs. These include policy-related issues such as which countries could take on commitments to implement SD-PAMs (rather than quantified emission commitments)? Why would particular countries decide to take on such commitments? They also include questions related to how SD-PAMs could be implemented. For many other options for possible post-2012 GHG mitigation actions, including by non-Annex I countries, have also been proposed. However, this paper focuses solely on SD-PAMs.

  9. How Changes in Anti-SD Sequences Would Affect SD Sequences in Escherichia coli and Bacillus subtilis.

    Science.gov (United States)

    Abolbaghaei, Akram; Silke, Jordan R; Xia, Xuhua

    2017-05-05

    The 3' end of the small ribosomal RNAs (ssu rRNA) in bacteria is directly involved in the selection and binding of mRNA transcripts during translation initiation via well-documented interactions between a Shine-Dalgarno (SD) sequence located upstream of the initiation codon and an anti-SD (aSD) sequence at the 3' end of the ssu rRNA. Consequently, the 3' end of ssu rRNA (3'TAIL) is strongly conserved among bacterial species because a change in the region may impact the translation of many protein-coding genes. Escherichia coli and Bacillus subtilis differ in their 3' ends of ssu rRNA, being GAUC ACCUCCUUA 3' in E. coli and GAUC ACCUCCUU UCU3' or GAUC ACCUCCUU UCUA3' in B. subtilis Such differences in 3'TAIL lead to species-specific SDs (designated SD Ec for E. coli and SD Bs for B. subtilis ) that can form strong and well-positioned SD/aSD pairing in one species but not in the other. Selection mediated by the species-specific 3'TAIL is expected to favor SD Bs against SD Ec in B. subtilis , but favor SD Ec against SD Bs in E. coli Among well-positioned SDs, SD Ec is used more in E. coli than in B. subtilis , and SD Bs more in B. subtilis than in E. coli Highly expressed genes and genes of high translation efficiency tend to have longer SDs than lowly expressed genes and genes with low translation efficiency in both species, but more so in B. subtilis than in E. coli Both species overuse SDs matching the bolded part of the 3'TAIL shown above. The 3'TAIL difference contributes to the host specificity of phages. Copyright © 2017 Abolbaghaei et al.

  10. Penerapan Model Beyond Centers and Circle Tme SD Kelas Satu

    OpenAIRE

    FITRIA, EVY

    2014-01-01

    Penelitian bertujuan mengkaji pelaksanaan penerapan model pembelajaran Sentra Model pembelajaran sentra (Beyond Centers and Circle Time) dilaksanakan pada siswa kelas satu SD Islam Jayawinata Kota Tangerang 2013. Penelitian menggunakan metode kualitatitf dengan analisis model Miles and Huberman. Hasil penelitian mengungkapkan bahwa kegiatan SD kelas satu menggunakan model pembelajaran sentra atau BCCT pada tahun ajaran baru sehingga guru memiliki panduan ketika membuat rencana pembelajaran; p...

  11. Positional dependence of the SNPP VIIRS SD BRDF degradation factor

    Science.gov (United States)

    Lei, Ning; Chen, Xuexia; Chang, Tiejun; Xiong, Xiaoxiong

    2017-09-01

    The Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the Suomi National Polar-orbiting Partnership (SNPP) satellite is a passive scanning radiometer and an imager. The VIIRS regularly performs on-orbit radiometric calibration of its reflective solar bands (RSBs) through observing an onboard sunlit solar diffuser (SD). The reflectance of the SD changes over time and the change is denoted as the SD bidirectional reflectance distribution function degradation factor. The degradation factor, measured by an onboard solar diffuser stability monitor, has been shown to be both incident sunlight and outgoing direction dependent. In this Proceeding, we investigate the factor's dependence on SD position. We develop a model to relate the SD degradation factor with the amount of solar exposure. We use Earth measurements to evaluate the effectiveness of the model.

  12. EKSISTENSI SD GMIT DI ROTE NDAO (Studi Deskriptif Penempatan Guru PNS pada SD GMIT Rote Ndao-NTT

    Directory of Open Access Journals (Sweden)

    Melki Manafe

    2013-12-01

    berasal dari Negara. Hasil-hasil inimenempatkan SD GMIT di Rote Ndao pada status quasistate school dimana SD GMIT adalah milik GMIT akan tetapi semua operasional (subsidi pendidikan dan sumber daya manusia/guru selalu bergantung pada Negara.

  13. Viscosity of aqueous Ni(NO3)2 solutions at temperatures from (297 to 475) K and at pressures up to 30 MPa and concentration between (0.050 and 2.246) mol . kg-1

    International Nuclear Information System (INIS)

    Abdulagatov, I.M.; Zeinalova, A.B.; Azizov, N.D.

    2006-01-01

    Viscosity of nine aqueous Ni(NO 3 ) 2 solutions (0.050, 0.153, 0.218, 0.288, 0.608, 0.951, 1.368, 1.824, and 2.246) mol . kg -1 was measured in the temperature range from (297 to 475) K and at pressures (0.1, 10, 20, and 30) MPa. The measurements were carried out with a capillary flow technique. The total experimental uncertainty of viscosity, pressure, temperature, and composition measurements were estimated to be less than 1.6%, 0.05%, 15 mK, and 0.02%, respectively. All experimental and derived results are compared with experimental and calculated values reported in the literature. Extrapolation of the solution viscosity measurements to zero concentration (pure water values) for the given temperature and pressure are in excellent agreement (average absolute deviation, AAD = 0.13%) with the values of pure water viscosity from IAPWS formulation [J. Kestin, J.V. Sengers, B. Kamgar-Parsi, J.M.H. Levelt Sengers, J. Phys. Chem. Ref. Data 13 (1984) 175-189]. The viscosity data for the solutions as a function of concentration have been interpreted in terms of the extended Jones-Dole equation for strong electrolytes. The values of viscosity A-, B-, and D-coefficients of the extended Jones-Dole equation for the relative viscosity (η/η ) of aqueous Ni(NO 3 ) 2 solutions as a function of temperature are studied. The derived values of the viscosity A- and B-coefficients were compared with the results predicted by Falkenhagen-Dole theory (limiting law) of electrolyte solutions and the values calculated with the ionic B-coefficient data. The measured values of viscosity for the solutions were also used to calculate the effective rigid molar volumes in the extended Einstein relation for the relative viscosity (η/η )

  14. SdAb heterodimer formation using leucine zippers

    Science.gov (United States)

    Goldman, Ellen R.; Anderson, George P.; Brozozog-Lee, P. Audrey; Zabetakis, Dan

    2013-05-01

    Single domain antibodies (sdAb) are variable domains cloned from camel, llama, or shark heavy chain only antibodies, and are among the smallest known naturally derived antigen binding fragments. SdAb derived from immunized llamas are able to bind antigens with high affinity, and most are capable of refolding after heat or chemical denaturation to bind antigen again. We hypothesized that the ability to produce heterodimeric sdAb would enable reagents with the robust characteristics of component sdAb, but with dramatically improved overall affinity through increased avidity. Previously we had constructed multimeric sdAb by genetically linking sdAb that bind non-overlapping epitopes on the toxin, ricin. In this work we explored a more flexible approach; the construction of multivalent binding reagents using multimerization domains. We expressed anti-ricin sdAb that recognize different epitopes on the toxin as fusions with differently charged leucine zippers. When the initially produced homodimers are mixed the leucine zipper domains will pair to produce heterodimers. We used fluorescence resonance energy transfer to confirm heterodimer formation. Surface plasmon resonance, circular dichroism, enzyme linked immunosorbent assays, and fluid array assays were used to characterize the multimer constructs, and evaluate their utility in toxin detection.

  15. Study of sdO models. Pulsation Analysis

    OpenAIRE

    Rodríguez-López, C.; Moya, A.; Garrido, R.; MacDonald, J.; Oreiro, R.; Ulla, A.

    2009-01-01

    We have explored the possibility of driving pulsation modes in models of sdO stars in which the effects of element diffusion, gravitational settling and radiative levitation have been neglected so that the distribution of iron-peak elements remains uniform throughout the evolution. The stability of these models was determined using a non-adiabatic oscillations code. We analysed 27 sdO models from 16 different evolutionary sequences and discovered the first ever sdO models capable of driving h...

  16. UTVÄRDERING AV UTVALDA SD-WAN PRODUKTER

    OpenAIRE

    Åkerblom, Jacob

    2016-01-01

    Denna jämförelsestudie ämnar att undersöka marknadens leverantörer av nätverksutrustning de- finierade som Software Defined Wide Area Networks(SD-WAN). SD-WAN är en innovativ teknik som applicerar virtualisering och Software defined networking koncept i Wide Area Networks (WAN) för att skapa kostnadseffektiva nätverk. Studien har utförts på företaget Curitiba som idag arbetar med konsulttjänster inom utvalda WAN-optimering och SD-WAN-produkter. Arbetets syfte är att utvärdera SD-WAN-lösningar...

  17. Biota - 2011 Vegetation Inventory - Mud Lake, MN/SD

    Data.gov (United States)

    Army Corps of Engineers, Department of the Army, Department of Defense — 2011 Vegetation Classification for Mud Lake, MN/SD Vegetation Project Report, OMBIL Environmental Stewardship - Level 1 Inventory. Mud Lake, located on the Minnesota...

  18. Sierra/SD User's Notes.

    Energy Technology Data Exchange (ETDEWEB)

    Munday, Lynn Brendon; Day, David M.; Bunting, Gregory; Miller, Scott T; Crane, Nathan K

    2018-03-01

    Sierra/SD provides a massively parallel implementation of structural dynamics finite element analysis, required for high fidelity, validated models used in modal, vibration, static and shock analysis of weapons systems. This document provides a users guide to the input for Sierra/SD. Details of input specifications for the different solution types, output options, element types and parameters are included. The appendices contain detailed examples, and instructions for running the software on parallel platforms.

  19. Photometric Survey to Search for Field sdO Pulsators

    Science.gov (United States)

    Johnson, C.; Green, E.; Wallace, S.; O'Malley, C.; Amaya, H.; Biddle, L.; Fontaine, G.

    2014-04-01

    We present the results of a campaign to search for subdwarf O (sdO) star pulsators among bright field stars. The motivation for this project is the recent discovery by Randall et al. (2011) of four rapidly pulsating sdO stars in the globular cluster ω Cen, with Teff near 50,000 K, 5.4 -0.1 and similar temperatures and gravities. To date, we have found no detectable pulsations at amplitudes above 0.08% (4 times the mean noise level) in any of the 36 field sdO stars that we observed. The presence of pulsations in ω Cen sdO stars and their apparent absence in seemingly comparable field sdO stars is perplexing. While very suggestive, the significance of this result is difficult to assess more completely right now due to remaining uncertainties about the temperature width and purity of the ω Cen instability strip and the existence of any sdO pulsators with weaker amplitudes than the current detection limit in globular clusters.

  20. RECORD OF THE BINARY DATA ON SD CARD ARDUINO DUE

    Directory of Open Access Journals (Sweden)

    V. G. Mikhailov

    2016-01-01

    Full Text Available The short review of microcontrollers of family Arduino, their characteristics and application fields is given. Importance of record of parameters of researched object is marked to produce debugging of control systems on microcontrollers Arduino. Unique possibility of registration of parameters in family Arduino is record on SD a card in an alpha mode with usage of functions print (, write (. The problems connected to record of the binary data on SD a card on microcontroller Arduino Due are considered. The analysis of methods of record of the binary data on SD card Arduino Due, originating problems with neo-cleaning of memory from the previous program leading to possibility of duplication of the data on SD to a card, presence of the erratic point of view about restriction of volumes of data record and necessity of usage become outdated SD cards is carried out. Ways of elimination of the marked lacks are considered. The estimation of high-speed performance of various approaches of a data recording on SD a card is led. On the basis of the led researches the approach of multiplexing of the writeable information at the expense of conversion of the binary data is offered is byte-serial in a character array in code ASCI without magnification of their volume and record by units on 240 byte. It allows to use as much as possible standard function possibilities write ( Arduino and specificity of the organization of memory SD of cards and to increase high-speed performance more than in 1100 times in comparison with record in a character type on one byte.It is marked that usage of decisions of an exception of duplication of the data offered at forums does not provide completeness of their elimination. For Arduino Due for storage cleaning it is necessary usages of the special programmator or setting of the new program of loading.

  1. Purification, Characterization, and Optimum Conditions of Fermencin SD11, a Bacteriocin Produced by Human Orally Lactobacillus fermentum SD11.

    Science.gov (United States)

    Wannun, Phirawat; Piwat, Supatcharin; Teanpaisan, Rawee

    2016-06-01

    Fermencin SD11, a bacteriocin produced by human orally Lactobacillus fermentum SD11, was purified, characterized, and optimized in conditions for bacterial growth and bacteriocin production. Fermencin SD11 was purified using three steps of ammonium sulfate precipitation, gel filtration chromatography, and reverse-phase high-performance liquid chromatography. The molecular weight was found to be 33,000 Da using SDS-PAGE and confirmed as 33,593.4 Da by liquid chromatography-mass spectrometry. Fermencin SD11 exhibited activity against a wide range of oral pathogens including cariogenic and periodontogenic pathogens and Candida. The active activity was stable between 60 - 80 °C in a pH range of 3.0 to 7.0. It was sensitive to proteolytic enzymes (proteinase K and trypsin), but it was not affected by α-amylase, catalase, lysozyme, and saliva. The optimum conditions for growth and bacteriocin production of L. fermentum SD11 were cultured at acidic with pH of 5.0-6.0 at 37 or 40 °C under aerobic or anaerobic conditions for 12 h. It is promising that L. fermentum SD11 and its bacteriocin may be an alternative approach for promoting oral health or prevention of oral diseases, e.g., dental caries and periodontitis, which would require further clinical trials.

  2. Fragmentation of stretched spin strength in N=Z sd-shell nuclei

    International Nuclear Information System (INIS)

    Carr, J.A.; Bloom, S.D.; Petrovich, F.; Philpott, R.J.

    1992-01-01

    Calculations have been performed to explore the effect of configuration mixing in a large basis on the fragmentation of ''stretched'' M6 strength in the sd-shell nuclei 20 Ne, 24 Mg, 28 Si, 32 S, and 36 Ar. This work elaborates on results for 28 Si given previously, extends those calculations to neighboring N=Z nuclei with the same basis restriction (one particle in the 1f 7/2 orbit and up to four particles in the 1d 3/2 orbit) used in that earlier paper, and examines all self-conjugate sd-shell nuclei in a basis with one particle in the 1f 7/2 orbit and unrestricted occupancy of the sd-shell orbits. It is found that configuration mixing in a large basis reproduces interesting features of the spectrum for 28 Si and 32 S and gives an improved description of other properties of the observed 6 - states, but fails to describe the observed spectrum in 24 Mg. Emphasis is placed on the location of additional observable fragments of the M6 response

  3. The sdA problem - I. Physical properties

    Science.gov (United States)

    Pelisoli, Ingrid; Kepler, S. O.; Koester, D.

    2018-04-01

    The so-called sdA stars are defined by having H-rich spectra and surface gravities similar to hot subdwarf stars, but effective temperature below the zero-age horizontal branch. Their evolutionary history is an enigma: their surface gravity is too high for main-sequence stars, but too low for single evolution white dwarfs. They are most likely byproducts of binary evolution, including blue-stragglers, extremely-low mass white dwarf stars (ELMs) and their precursors (pre-ELMs). A small number of ELMs with similar properties to sdAs is known. Other possibilities include metal-poor A/F dwarfs, second generation stars, or even stars accreted from dwarf galaxies. In this work, we analyse colours, proper motions, and spacial velocities of a sample of sdAs from the Sloan Digital Sky Survey to assess their nature and evolutionary origin. We define a probability of belonging to the main sequence and a probability of being a (pre-)ELM based on these properties. We find that 7 per cent of the sdAs are more likely to be (pre-)ELMs than main-sequence stars. However, the spacial velocity distribution suggests that over 35 per cent of them cannot be explained as single metal-poor A/F stars.

  4. Intruder level and deformation in SD-pair shell model

    International Nuclear Information System (INIS)

    Luo Yan'an; Ning Pingzhi; Pan Feng

    2004-01-01

    The influence of intruder level on nuclear deformation is studied within the framework of the nucleon-pair shell model truncated to an SD-pair subspace. The results suggest that the intruder level has a tendency to reduce the deformation and plays an important role in determining the onset of rotational behavior. (authors)

  5. SD-CAS: Spin Dynamics by Computer Algebra System.

    Science.gov (United States)

    Filip, Xenia; Filip, Claudiu

    2010-11-01

    A computer algebra tool for describing the Liouville-space quantum evolution of nuclear 1/2-spins is introduced and implemented within a computational framework named Spin Dynamics by Computer Algebra System (SD-CAS). A distinctive feature compared with numerical and previous computer algebra approaches to solving spin dynamics problems results from the fact that no matrix representation for spin operators is used in SD-CAS, which determines a full symbolic character to the performed computations. Spin correlations are stored in SD-CAS as four-entry nested lists of which size increases linearly with the number of spins into the system and are easily mapped into analytical expressions in terms of spin operator products. For the so defined SD-CAS spin correlations a set of specialized functions and procedures is introduced that are essential for implementing basic spin algebra operations, such as the spin operator products, commutators, and scalar products. They provide results in an abstract algebraic form: specific procedures to quantitatively evaluate such symbolic expressions with respect to the involved spin interaction parameters and experimental conditions are also discussed. Although the main focus in the present work is on laying the foundation for spin dynamics symbolic computation in NMR based on a non-matrix formalism, practical aspects are also considered throughout the theoretical development process. In particular, specific SD-CAS routines have been implemented using the YACAS computer algebra package (http://yacas.sourceforge.net), and their functionality was demonstrated on a few illustrative examples. Copyright © 2010 Elsevier Inc. All rights reserved.

  6. Resonances in collisions between S-D shell nuclei

    International Nuclear Information System (INIS)

    Betts, R.R.

    1984-01-01

    Experimental evidence relating to the existence of resonances in collisions between s-d shell nuclei will be reviewed. The determination of the spins and spectroscopic properties of some of these resonances will be discussed. The behaviour of both the resonance and background cross-sections will be compared with model expectations. Some future directions in this area of study will be indicated and the relationship of this work to other results briefly discussed. (author)

  7. Sex differences in the stress response in SD rats.

    Science.gov (United States)

    Lu, Jing; Wu, Xue-Yan; Zhu, Qiong-Bin; Li, Jia; Shi, Li-Gen; Wu, Juan-Li; Zhang, Qi-Jun; Huang, Man-Li; Bao, Ai-Min

    2015-05-01

    Sex differences play an important role in depression, the basis of which is an excessive stress response. We aimed at revealing the neurobiological sex differences in the same study in acute- and chronically-stressed rats. Female Sprague-Dawley (SD) rats were randomly divided into 6 groups: chronic unpredictable mild stress (CUMS), acute foot shock (FS) and controls, animals in all 3 groups were sacrificed in proestrus or diestrus. Male SD rats were randomly divided into 3 groups: CUMS, FS and controls. Comparisons were made of behavioral changes in CUMS and control rats, plasma levels of corticosterone (CORT), testosterone (T) and estradiol (E2), and of the hypothalamic mRNA-expression of stress-related molecules, i.e. estrogen receptor α and β, androgen receptor, aromatase, mineralocorticoid receptor, glucocorticoid receptor, corticotropin-releasing hormone, arginine vasopressin and oxytocin. CUMS resulted in disordered estrus cycles, more behavioral and hypothalamic stress-related molecules changes and a stronger CORT response in female rats compared with male rats. Female rats also showed decreased E2 and T levels after FS and CUMS, while male FS rats showed increased E2 and male CUMS rats showed decreased T levels. Stress affects the behavioral, endocrine and the molecular response of the stress systems in the hypothalamus of SD rats in a clear sexual dimorphic way, which has parallels in human data on stress and depression. Copyright © 2015 Elsevier B.V. All rights reserved.

  8. Elucidating the 16S rRNA 3' boundaries and defining optimal SD/aSD pairing in Escherichia coli and Bacillus subtilis using RNA-Seq data.

    Science.gov (United States)

    Wei, Yulong; Silke, Jordan R; Xia, Xuhua

    2017-12-15

    Bacterial translation initiation is influenced by base pairing between the Shine-Dalgarno (SD) sequence in the 5' UTR of mRNA and the anti-SD (aSD) sequence at the free 3' end of the 16S rRNA (3' TAIL) due to: 1) the SD/aSD sequence binding location and 2) SD/aSD binding affinity. In order to understand what makes an SD/aSD interaction optimal, we must define: 1) terminus of the 3' TAIL and 2) extent of the core aSD sequence within the 3' TAIL. Our approach to characterize these components in Escherichia coli and Bacillus subtilis involves 1) mapping the 3' boundary of the mature 16S rRNA using high-throughput RNA sequencing (RNA-Seq), and 2) identifying the segment within the 3' TAIL that is strongly preferred in SD/aSD pairing. Using RNA-Seq data, we resolve previous discrepancies in the reported 3' TAIL in B. subtilis and recovered the established 3' TAIL in E. coli. Furthermore, we extend previous studies to suggest that both highly and lowly expressed genes favor SD sequences with intermediate binding affinity, but this trend is exclusive to SD sequences that complement the core aSD sequences defined herein.

  9. ANALISIS REKRUITMEN TENAGA PENDIDIK PADA SD KALAM KUDUS PEKANBARU

    Directory of Open Access Journals (Sweden)

    Murnawati Murnawati

    2015-04-01

    Full Text Available Abstrak: Penelitian ini dilakukan untuk mengetahui sistem rekrutmen tenaga pendidik pada SD kalam kudus kota Pekanbaru. Populasi dalam penelitian ini adalah tenaga pendidik di SD Kalam Kudus Kota Pekanbaru, kebutuhan guru sebanyak 65 sedangkan guru tetap sebanyak 40 guru dan sisanya guru honor sebanyak 25 guru. Dalam penelitian ini penulis mengambil sampel seluruh populasi. Pengambilan sampel dilakukan secara sensus. Data yang digunakan adalah data primer yang diperoleh dari wawancara langsung dan penyebaran kuesioner. Analisis data dalam penelitian ini adalah menggunakan metode deskriptif. Berdasarkan hasil penelitian dapat disimpulkan bahwa persyaratan administrasi dalam rekruitmen guru diperoleh rata – rata skor sebesar 3,49. Artinya persyaratan administrasi dalam rekruitmen guru pada SD Kalam Kudus Pekanbaru dinilai baik. Abstract: This research aimed to determine the system of teachers’s recruitment in Kalam Kudus elementary school of Pekanbaru. The population in this study were educators in in Kalam Kudus elementary school of Pekanbaru, the teacher needs as much as 65 while the teacher remains as much as 40 teachers and teacher salaries remaining 25 teachers. In this study the authors took samples of the entire population. Sampling was done by census. The data used is primary data obtained from interviews and questionnaires. Data analyzed by descriptive method. Based on the results of this study concluded that the administrative requirements for the recruitment of teachers obtained average - average score of 3.49. This means that the administrative requirements for the recruitment of teachers in elementary Holy Kalam Pekanbaru considered good. Kata Kunci : Rekruitmen, Tenaga Pendidik

  10. A weak magnetic field inhibits hippocampal neurogenesis in SD rats

    Science.gov (United States)

    Zhang, B.; Tian, L.; Cai, Y.; Pan, Y.

    2017-12-01

    Geomagnetic field is an important barrier that protects life forms on Earth from solar wind and radiation. Paleomagnetic data have well demonstrated that the strength of ancient geomagnetic field was dramatically weakened during a polarity transition. Accumulating evidence has shown that weak magnetic field exposures has serious adverse effects on the metabolism and behaviors in organisms. Hippocampal neurogenesis occurs throughout life in mammals' brains which plays a key role in brain function, and can be influenced by animals' age as well as environmental factors, but few studies have examined the response of hippocampal neurogenesis to it. In the present study, we have investigated the weak magnetic field effects on hippocampal neurogenesis of adult Sprague Dawley (SD) rats. Two types of magnetic fields were used, a weak magnetic field (≤1.3 μT) and the geomagnetic fields (51 μT).The latter is treated as a control condition. SD rats were exposure to the weak magnetic field up to 6 weeks. We measured the changes of newborn nerve cells' proliferation and survival, immature neurons, neurons and apoptosis in the dentate gyrus (DG) of hippocampus in SD rats. Results showed that, the weak magnetic field (≤1.3 μT) inhibited their neural stem cells proliferation and significantly reduced the survival of newborn nerve cells, immature neurons and neurons after 2 or 4 weeks continuous treatment (i.e. exposure to weak magnetic field). Moreover, apoptosis tests indicated the weak magnetic field can promote apoptosis of nerve cells in the hippocampus after 4 weeks treatment. Together, our new data indicate that weak magnetic field decrease adult hippocampal neurogenesis through inhibiting neural stem cells proliferation and promoting apoptosis, which provides useful experimental constraints on better understanding the mechanism of linkage between life and geomagnetic field.

  11. Magnetic resonance spectroscopy of traumatic brain in SD rats model

    International Nuclear Information System (INIS)

    Li Ke; Li Yangbin; Li Zhiming; Huang Yong; Li Bin; Lu Guangming

    2009-01-01

    Objective: To assess the value and prospect of magnetic resonance spectroscopy (MRS) in early diagnosis of traumatic brain with traumatic brain model in SD rats. Methods: Traumatic brain modal was established in 40 male SD rats utilizing a weigh-drop device, and MRS was performed before trauma and 4,8,24 and 48 hours after trauma. The ratio of N-acetylaspartate/creatine (NAA/Ct) and choline/creatine (Cho/Cr) were calculated and compared with pathological findings respectively. Results: Axonal changes were confirmed in microscopic study 4 hours after injury. The ratio of NAA/Ct decreased distinctly at 4 hours after trauma, followed by a steadily recover at 8 hours, and no significant change from 24h to 48h. There was no significant change in the ratio of Cho/Cr before and after trauma. Conclusion: MRS can be used to monitor the metabolic changes of brain non-invasively. MRS could play a positive role in early diagnosis, prognosis and follow-up of traumatic brain. (authors)

  12. Clustering aspects of sd shell nuclei studied by AMD

    Energy Technology Data Exchange (ETDEWEB)

    Kimura, Masaaki [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan); Taniguchi, Yasutaka [Department of Physics, Kyoto University, Kitashirakawa, Kyoto 606-8502 (Japan); En' yo, Yoshiko [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan); Horiuchi, Hisashi [Department of Physics, Kyoto University, Kitashirakawa, Kyoto 606-8502 (Japan)

    2006-10-10

    The new clustering aspects of sd-shell nuclei found by the recent application of the antisymmetrized molecular dynamics are reported. In this paper we present two topics, 'superdeformed band of {sup 32}S and {sup 16}O + {sup 16}O clustering' and 'molecular-orbital and di-nuclei states in {sup 22}Ne'. In the first topic, it will be shown that the superdeformed band of 32S has a considerable amount of {sup 16}O + {sup 16}O cluster component, and can be regarded as to belong to a family of the {sup 16}O + {sup 16}O molecular bands. In the second topic, the presence of the molecularorbital band which has an {alpha} + {sup 16}O cluster core surrounded by two covalently neutrons is suggested together with an {alpha} + {sup 18}O di-nuclei band.

  13. Clustering aspects of sd shell nuclei studied by AMD

    International Nuclear Information System (INIS)

    Kimura, Masaaki; Taniguchi, Yasutaka; En'yo, Yoshiko; Horiuchi, Hisashi

    2006-01-01

    The new clustering aspects of sd-shell nuclei found by the recent application of the antisymmetrized molecular dynamics are reported. In this paper we present two topics, 'superdeformed band of 32 S and 16 O + 16 O clustering' and 'molecular-orbital and di-nuclei states in 22 Ne'. In the first topic, it will be shown that the superdeformed band of 32S has a considerable amount of 16 O + 16 O cluster component, and can be regarded as to belong to a family of the 16 O + 16 O molecular bands. In the second topic, the presence of the molecularorbital band which has an α + 16 O cluster core surrounded by two covalently neutrons is suggested together with an α + 18 O di-nuclei band

  14. SATUS GIZI TIDAK SIGNIFIKAN MENENTUKAN PRESTASI SISWA SD

    Directory of Open Access Journals (Sweden)

    Dian Vista

    2014-04-01

    Full Text Available Background : The low Human Development Index (HDI ranking in Indonesia compared withneighboring countries affected by the low nutritional status and health problems of Indonesia’a populationfactor.One of the factor’s facing the health problem’s of Indonesian society is the problem of nutrition,undertrition and obessitas. They both have a negative impact on the quality of health. Government’sefforts to improve nutrition in school children by providing the Food Supplement Program School Children(PMT-AS. Good nutritional status is necessary for physical growth, brain development, employability andoptimal health. Abnormalities that occur in the brain due to malnutritional have one impact is the declinein brain function that affects the ability to learn, resulting in lower children’s learning outcome.Objective :To determine the relationship of nutritional status and student achievement in elementaryschool Bangunjiwo Kasihan Bantul Yogyakarta.Methods :This study used non-experimental research methods with cross sectional approach. Thepopulation in this study were student in grade 6 in SD Negeri Bangunjiwo Kasihan Bantul. The samplesused were 43 students. Engineering samples of the total samplingobtained a total sample of 43 studentsand analize using Spearman.Results :Nutritional status in elementary school Bangunjiwo Kasihan Bantul there are 36 students(83,7% in the normal category of 43 respondents. A grade students achievement 6 in SD NegeriBangunjiwo Kasihan Bantul most in categories as many 28 students (65,1% of the 43 respondent.Conclusion :There was no significant association between nutritional status of student performance,with a value of (p>0,05.

  15. Charge radii of magnesium isotopes by laser spectroscopy a structural study over the $sd$ shell

    CERN Multimedia

    Schug, M; Krieger, A R

    We propose to study the evolution of nuclear sizes and shapes over the magnesium chain by measuring the root-mean-square charge radii of $^{21 - 32}$Mg, essentially covering the entire $\\textit{sd}$ shell. Our goal is to detect the structural changes, which in the neutron-deficient isotopes may originate from clustering, in a way similar to neon, and on the neutron-rich side would characterize the transition to the "island of inversion". We will combine, for the first time, the sensitive $\\beta$-detection technique with traditional fluorescence spectroscopy for isotope-shift measurements and in such a way gain access to the exotic species near the ${N}$ = 8 and ${N}$ = 20 shell closures.

  16. Optically detected SdH oscillations in CdTe/(CdMg)Te and CdTe/(CdMnMg)Te modulation doped quantum wells

    International Nuclear Information System (INIS)

    Shen, J.X.; Ossau, W.; Fischer, F.; Waag, A.; Landwehr, G.

    1995-01-01

    Oscillations of photoluminescence properties in external magnetic fields are investigated in CdTe modulation doped quantum wells. The oscillatory behaviour of the luminescence intensity, the line width and the g factor is due to many-body effects in the 2-dimensional electron gas. The oscillation of photoluminescence intensity can be easily used as optically detected Shubnikov de Haas effect to determine the electron concentration in quantum wells without contacts. (author)

  17. Optically detected SdH oscillations in CdTe/(CdMg)Te and CdTe/(CdMnMg)Te modulation doped quantum wells

    Energy Technology Data Exchange (ETDEWEB)

    Shen, J.X.; Ossau, W.; Fischer, F.; Waag, A.; Landwehr, G. [Physikalisches Institut der Uniwersitaet Wuerzburg, Wuerzburg (Germany)

    1995-12-31

    Oscillations of photoluminescence properties in external magnetic fields are investigated in CdTe modulation doped quantum wells. The oscillatory behaviour of the luminescence intensity, the line width and the g factor is due to many-body effects in the 2-dimensional electron gas. The oscillation of photoluminescence intensity can be easily used as optically detected Shubnikov de Haas effect to determine the electron concentration in quantum wells without contacts. (author). 5 refs, 3 figs, 1 tab.

  18. Densities and apparent molar volumes of atmospherically important electrolyte solutions. 2. The systems H(+)-HSO4(-)-SO4(2-)-H2O from 0 to 3 mol kg(-1) as a function of temperature and H(+)-NH4(+)-HSO4(-)-SO4)2-)-H2O from 0 to 6 mol kg(-1) at 25 °C using a Pitzer ion interaction model, and NH4HSO4-H2O and (NH4)3H(SO4)2-H2O over the entire concentration range.

    Science.gov (United States)

    Clegg, S L; Wexler, A S

    2011-04-21

    A Pitzer ion interaction model has been applied to the systems H(2)SO(4)-H(2)O (0-3 mol kg(-1), 0-55 °C) and H(2)SO(4)-(NH(4))(2)SO(4)-H(2)O (0-6 mol kg(-1), 25 °C) for the calculation of apparent molar volume and density. The dissociation reaction HSO(4)(-)((aq)) ↔ H(+)((aq)) + SO(4)(2-)((aq)) is treated explicitly. Apparent molar volumes of the SO(4)(2-) ion at infinite dilution were obtained from part 1 of this work, (1) and the value for the bisulfate ion was determined in this study from 0 to 55 °C. In dilute solutions of both systems, the change in the degree of dissociation of the HSO(4)(-) ion with concentration results in much larger variations of the apparent molar volumes of the solutes than for conventional strong (fully dissociated) electrolytes. Densities and apparent molar volumes are tabulated. Apparent molar volumes calculated using the model are combined with other data for the solutes NH(4)HSO(4) and (NH(4))(3)H(SO(4))(2) at 25 °C to obtain apparent molar volumes and densities over the entire concentration range (including solutions supersaturated with respect to the salts).

  19. PEMBELAJARAN TEMATIK YANG IDEAL DI SD/MI

    Directory of Open Access Journals (Sweden)

    Sun Haji

    2015-03-01

    Full Text Available Anak usia sekolah / 6-12 tahun disebut masa sekolah, karena anak sudah menamatkan taman kanak-kanak sebagai lembaga persiapan bersekolah yang sebenarnya. Disebut masa matang untuk belajar, Karena anak sudah berusaha untuk mencapai sesuatu, tetapi, perkembangan aktivitas bermain yang hanya bertujuan untuk mendapatkan kesenangan pada waktu melakukan aktivitas itu sendiri. Disebut masa matang untuk sekolah, karena anak sudah menginginkan kecakapan-kecakapan baru, yang dapat diberikan oleh sekolah (Nasution Noehi, 1993: 44. Menurut Banett, dkk., karakteristik anak usia SD, antara lain sebagai berikut. (1 Mereka secara alamiah memiliki rasa ingin tahu yang kuat dan tertarik akan dunia sekitar yang mengelilingi diri mereka sendiri. (2 Senang bermain dan lebih suka bergembira. (3 Suka mengatur dirinya untuk menangani berbagai hal, mengeksplorasi suatu situasi dan mencoba usaha-usaha baru. (4 biasanya tergetar perasaannya dan terdorong untuk berprestasi sebagaimana mereka tidak suka mengalami ketidakpuasan dan menolak kegagalan-kegagalan. (5 Belajar secara efektif ketika merasa puas dengan situasi yang terjadi. (6 Belajar dengan cara bekerja, mengobservasi, berinisiatif dan mengajar anak-anak lainnya ( Mulyani Sumantri & Nana Syaodih, 2000: 12.

  20. Chemical fingerprints of He-sdO stars

    Directory of Open Access Journals (Sweden)

    Schindewolf Markus

    2018-02-01

    Full Text Available The chemical composition of helium-rich hot subluminous O stars plays an important role to understand and model their formation history. We present a spectroscopic analysis of four He-sdO stars,CD-31° 4800, [CW83] 0904- 02, LSS 1274 and LS IV +10° 9. The analysis is based on archival optical and UV high-resolution spectra. We used Tlusty200/Synspec48 to compute line blanketed non-LTE model atmospheres and their corresponding synthetic spectra and derive the atmospheric parameters as well as the abundances of the most prominent elements. All stars have helium-dominated atmospheres with hardly any hydrogen and temperatures between 42000 K and 47000 K while their surface gravity spans between log g = 5.4 and 5.7. CD-31° 4800 shows an enrichment of nitrogen and the characteristic pattern of hydrogen burning via the CNO-cycle, while the rest of the elements have about the solar abundance. This points to the slow merger of two helium white dwarfs as the most likely origin for this system. The other three stars are enriched in carbon, nitrogen and neon while their intermediate mass element’s abundance scatters around the solar value. They were possibly formed in the deep mixing late hot flasher scenario.

  1. Chemical fingerprints of He-sdO stars

    Science.gov (United States)

    Schindewolf, Markus; Németh, Peter; Heber, Ulrich; Battich, Tiara; Miller Bertolami, Marcelo M.; Latour, Marilyn

    2018-02-01

    The chemical composition of helium-rich hot subluminous O stars plays an important role to understand and model their formation history. We present a spectroscopic analysis of four He-sdO stars,CD-31° 4800, [CW83] 0904- 02, LSS 1274 and LS IV +10° 9. The analysis is based on archival optical and UV high-resolution spectra. We used Tlusty200/Synspec48 to compute line blanketed non-LTE model atmospheres and their corresponding synthetic spectra and derive the atmospheric parameters as well as the abundances of the most prominent elements. All stars have helium-dominated atmospheres with hardly any hydrogen and temperatures between 42000 K and 47000 K while their surface gravity spans between log g = 5.4 and 5.7. CD-31° 4800 shows an enrichment of nitrogen and the characteristic pattern of hydrogen burning via the CNO-cycle, while the rest of the elements have about the solar abundance. This points to the slow merger of two helium white dwarfs as the most likely origin for this system. The other three stars are enriched in carbon, nitrogen and neon while their intermediate mass element's abundance scatters around the solar value. They were possibly formed in the deep mixing late hot flasher scenario.

  2. KEMAMPUAN BERPIKIR KREATIF SISWA SD DALAM PEMBELAJARAN IPA

    Directory of Open Access Journals (Sweden)

    Jamaluddin Jamaluddin

    2016-02-01

    Full Text Available Abstract: Elementary School Studens' Creative Thinking Skills in Science Learning. This study aims (1 to investigate the differences of creative thinking skills among elementary school students who applied various learning methods (questioning, Think-Pair-Share, and Numbered-Head together and those who applied conventional learning methods; (2 to find out the differences in creative thinking skills between students of high and low academic ability; (3 to investigate the differences of creative thinking skills as influ­enced by learning methods and academic ability. Using a quasi -experimental design, this study found out that there are differences in creative thinking skills among students applying different learning methods and among students of different academic abilities and that these differences in creative thinking are skills as influenced by learning methods and academic abilities. Abstrak: Kemampuan Berpikir Kreatif Siswa SD dalam Pembelajaran IPA. Artikel ini didasarkan pada laporan penelitian yang bertujuan untuk mengetahui (1 perbedaan keterampilan berpikir kreatif, antara siswa yang belajar dengan strategi pembelajaran PBMP, PBMPTPS, PBMPNHT, dan strategi pembelajaran konvensional; (2 perbedaan keterampilan berpikir kreatif siswa berkemampuan akademik tinggi dan rendah; (3 perbedaan keterampilan berpikir kreatif akibat dari interaksi antara strategi pembelajaran dengan kemampuan akademik siswa. Hasil penelitian menunjukkan (1 ada perbedaan keterampilan berpikir kreatif antara siswa yang belajar dengan strategi PBMP, PBMPTPS, PBMPNHT, dan strategi Konven­sional; (2 ada perbedaan keterampilan berpikir kreatif, antara siswa berkemampuan akademik tinggi dengan siswa berkemampuan akademik rendah; (3 interaksi strategi pembelajaran PBMP, PBMP.TPS, PBMP.NHT, dan konvensional dengan kemampuan akademik siswa tidak berpengaruh signifikan terhadap keterampilan berpikir kreatif.

  3. Product of the SNPP VIIRS SD Screen Transmittance and the SD BRDF (RSB) From Both Yaw Maneuver and Regular On-Orbit Data

    Science.gov (United States)

    Lei, Ning; Xiong, Xiaoxiong

    2016-01-01

    To assure data quality, the Earth-observing Visible Infrared Imaging Radiometer Suite (VIIRS) regularly performs on-orbit radiometric calibrations of its 22 spectral bands. The primary calibration radiance source for the reflective solar bands (RSBs) is a sunlit solar diffuser (SD). During the calibration process, sunlight goes through a perforated plate (the SD screen) and then strikes the SD. The SD scattered sunlight is used for the calibration, with the spectral radiance proportional to the product of the SD screen transmittance and the SD bidirectional reflectance distribution function (BRDF). The BRDF is decomposed to the product of its value at launch and a numerical factor quantifying its change since launch. Therefore, the RSB calibration requires accurate knowledge of the product of the SD screen transmittance and the BRDF (RSB; launch time). Previously, we calculated the product with yaw maneuver data and found that the product had improved accuracy over the prelaunch one. With both yaw maneuver and regular on orbit data, we were able to improve the accuracy of the SDSM screen transmittance and the product for the solar diffuser stability monitor SD view. In this study, we use both yaw maneuver and a small portion of regular on-orbit data to determine the product for the RSB SD view.

  4. High-spin states in sd-shell nuclei

    International Nuclear Information System (INIS)

    Poel, C.J. van der.

    1982-01-01

    A systematic picture of the structure of high-spin states in the mass range A = 29 - 41 is developed on the basis of experimental results for the nuclei 34 Cl, 38 K and 39 K. It is shown that for 34 Cl the difficulties induced by the relatively low cross section can be overcome. Combination of the data obtained from a γ-γ coincidence experiment with the 24 Mg + 12 C reaction, using the LACSS, and from threshold measurements in the 31 P + α reaction, establishes an unambiguous level scheme. By means of accurate angular-distribution measurements unambiguous spin and parity assignments are made to the high-spin levels. From the results a rather simple shell-model picture for the structure of the high-spin states evolves. Several authors have published experimental work on high-spin states in 39 K, with seriously conflicting conclusions, however, for the spin-parity assignments. The powerful coincidence set-up with the LACSS enables a discrimination between the conflicting results from the previous studies. In this way, unambiguous, model-independent, spin-parity assignments to the high-spin levels are established. Highly selective experimental methods are used to identify the high-spin states of 38 K. It is shown that with a pulsed beam in the reaction 24 Mg + 16 O advantage can be taken of the presence of a long-lived high-spin isomeric level in this nucleus. The gamma-decay of the isomer is extensively studied. With the pulsed beam, also some states above the isomer could be located. The subsequent use of two Compton-suppression spectrometers in a γ-γ coincidence experiment reveals a number of high-spin levels at higher excitation energies. (Auth.)

  5. Anti-jugular vein thrombotic effect of Morinda citrifolia L. [noni] in male SD rats

    Directory of Open Access Journals (Sweden)

    Mian-Ying Wang

    2011-09-01

    Full Text Available Background: Venous thromboembolism (VTE is a common and serious medical condition, which is estimably responsible for more than 300,000 hospital admissions annually in the USA. Pulmonary embolism (PE is a major complication of VTE, which contributes to 12% death of hospitalized patients. Heparin is the most common anti-coagulant, but severe allergic reactions, bleeding, and thrombocytopenia limit its use. Thus, seeking a botanical, nontoxic antithrombotic alternative is an interesting area. Morinda citrifolia L. [noni] is a medicinal plant used in folk remedies by Polynesians for over 2,000 years. It has been reported to have a broad range of therapeutic and preventive effects. The bioactivities of NJ have been continuously discovered with antioxidative, anti-inflammatory, analgesic, and immune modifying activities. Our novel hypothesis is whether NJ has an anti-venous thrombotic effect in rodents. To examine our hypothesis, this study was designed to examine the anti-thrombotic effect of NJ on the jugular vein thrombosis model induced by ferric chloride in SD rats.Material and Methods: NJ and placebo used in this study were donated by Morinda Holding Inc. NJ was formulated with grape juice and blue berry juice. Placebo was prepared by using the same procedure of NJ preparation, but without NJ in it. Thirty-six male SD rats were divided into six groups. Anti-venous thrombotic activities of 5% NJ, 10% NJ, heparin, and 10% NJ plus heparin were examined and compared with the positive and blank controls. Thrombosis was induced by application of a filter paper soaked in 50% ferric chloride on the right jugular vein. AFunctional Foods in Health and Disease 2011; 9:297-3092-cm fragment of the occluded vein (thrombus was removed and weighed after 1-hour maturation. Blood samples were collected for platelet count, aPTT, and PT tests.Results: The weight of a 2-cm fragment of normal jugular vein was 9.9 ± 2.1 mg, while the weight of the occluded vein in

  6. [SD-OCT As screening test for hydroxychloroquine retinopathy: The «flying saucer» sign].

    Science.gov (United States)

    Asensio-Sánchez, V M

    2015-07-01

    Two asymptomatic women treated with hydroxychloroquine 200mg every day for 8 and 16 years developed retinal toxicity. Patient 1 was found to have a normal fundus and autofluorescence examination. Patient 2 was found to have a completely normal fundus examination. Fluorescein angiography shows parafoveal hyperfluorescence, and autofluorescence shows a minimal decrease in signal in the same region. In both patients the SD-OCT shows disruption of the ellipsoid zone in parafoveal region («flying saucer» sign). SD-OCT findings in the retina can identify hydroxychloroquine retinopathy in asymptomatic patients. Copyright © 2013 Sociedad Española de Oftalmología. Published by Elsevier España, S.L.U. All rights reserved.

  7. Alleviating anastrozole induced bone toxicity by selenium nanoparticles in SD rats

    Energy Technology Data Exchange (ETDEWEB)

    Vekariya, Kiritkumar K.; Kaur, Jasmine; Tikoo, Kulbhushan, E-mail: tikoo.k@gmail.com

    2013-04-15

    Aromatase inhibitors like anastrozole play an undisputed key role in the treatment of breast cancer, but on the other hand, various side effects like osteoporosis and increased risk of bone fracture accompany the chronic administration of these drugs. Here we show for the first time that selenium nanoparticles, when given in conjugation to anastrozole, lower the bone toxicity caused by anastrozole and thus reduce the probable damage to the bone. Selenium nanoparticles at a dose of 5 μg/ml significantly reduced the cell death caused by anastrozole (1 μM) in HOS (human osteoblast) cells. In addition, our results also highlighted that in female SD rat model, SeNPs (0.25, 0.5, 1 mg/kg/day) significantly prevented the decrease in bone density and increase in biochemical markers of bone resorption induced by anastrozole (0.2 mg/kg/day) treatment. Histopathological examination of the femurs of SeNP treated group revealed ossification, mineralization, calcified cartilaginous deposits and a marginal osteoclastic activity, all of which indicate a marked restorative action, suggesting the protective action of the SeNPs. Interestingly, SeNPs (1 mg/kg/day) also exhibited protective effect in ovariectomized rat model, by preventing osteoporosis, which signifies that bone loss due to estrogen deficiency can be effectively overcome by using SeNPs. - Highlights: ► SeNPs significantly reduce bone toxicity in anastrozole treated rats. ► SeNPs successfully prevented osteoporosis in ovariectomized rats. ► SeNP treatment lowered the levels of TRAP and increased the levels of ALKP.

  8. Alleviating anastrozole induced bone toxicity by selenium nanoparticles in SD rats

    International Nuclear Information System (INIS)

    Vekariya, Kiritkumar K.; Kaur, Jasmine; Tikoo, Kulbhushan

    2013-01-01

    Aromatase inhibitors like anastrozole play an undisputed key role in the treatment of breast cancer, but on the other hand, various side effects like osteoporosis and increased risk of bone fracture accompany the chronic administration of these drugs. Here we show for the first time that selenium nanoparticles, when given in conjugation to anastrozole, lower the bone toxicity caused by anastrozole and thus reduce the probable damage to the bone. Selenium nanoparticles at a dose of 5 μg/ml significantly reduced the cell death caused by anastrozole (1 μM) in HOS (human osteoblast) cells. In addition, our results also highlighted that in female SD rat model, SeNPs (0.25, 0.5, 1 mg/kg/day) significantly prevented the decrease in bone density and increase in biochemical markers of bone resorption induced by anastrozole (0.2 mg/kg/day) treatment. Histopathological examination of the femurs of SeNP treated group revealed ossification, mineralization, calcified cartilaginous deposits and a marginal osteoclastic activity, all of which indicate a marked restorative action, suggesting the protective action of the SeNPs. Interestingly, SeNPs (1 mg/kg/day) also exhibited protective effect in ovariectomized rat model, by preventing osteoporosis, which signifies that bone loss due to estrogen deficiency can be effectively overcome by using SeNPs. - Highlights: ► SeNPs significantly reduce bone toxicity in anastrozole treated rats. ► SeNPs successfully prevented osteoporosis in ovariectomized rats. ► SeNP treatment lowered the levels of TRAP and increased the levels of ALKP

  9. Culture Optimization and Amino Acid Composition of Cr-Enriched Mycelia of Pleurotus cornucopiae SD-01

    Directory of Open Access Journals (Sweden)

    Fan-Yun Meng

    2010-01-01

    Full Text Available Chromium(III is an essential trace element for humans and animals. Pleutorus cornucopiae SD-01 is a nutritional and functional mushroom containing many kinds of bioactive ingredients. The aims of this work are to optimize the conditions of P. cornucopiae SD-01 cultivation with Cr enrichment in submerged culture by determining the dry cell mass, Cr content in mycelia and the rate of Cr enrichment, and to analyze the amino acid composition of Cr-enriched mycelia. The optimal medium contained (in g/L: potato 200, sucrose 25, yeast extract 4, KH2PO4 1 and MgSO4·7H2O 1. The optimum parameters of liquid culture were temperature 25 °C, cultivation time 6 days, the volume of the medium 100 mL, rotation speed 160 rpm and initial pH=6.5. Under the optimized conditions, the values of the dry cell mass, Cr content in mycelia and the rate of Cr enrichment were (6.63±0.35 g/L, (3670±211 μg/g and (12.15±1.01 % respectively, which were by (23.23±1.22, (18.19±1.06 and (45.68±2.67 % respectively, higher than those in the control. Chromium(III in Cr-enriched mycelia was mainly combined with protein and polysaccharide. The contents of total amino acids and essential amino acids in Cr-enriched mycelia were increased by (31.25±0.58 and (44.26±0.76 %, respectively.

  10. Penerapan Metoda Serial Peripheral Interface (SPI pada Rancang Bangun Data Logger berbasis SD card

    Directory of Open Access Journals (Sweden)

    RATNA SUSANA

    2018-03-01

    Full Text Available ABSTRAK Serial Peripheral Interface (SPI adalah protokol komunikasi yang dapat digunakan sebagai interface komunikasi antara mikrokontroler dengan SD Card. Dengan menerapkan metoda SPI pada data logger berbasis SD Card, maka dapat diketahui karakteristik protokol komunikasi SPI antara mikrokontroler dengan SD Card. SD Card diformat dengan tipe FAT 16, dan data di dalam SD Card berupa sekumpulan paket data sensor yang diambil secara periodik dan disimpan dalam bentuk file dengan format.csv. Berdasarkan format paket data sensor yang dibuat, dapat dihitungwaktu perekaman data yang diperlukan agar kapasitas SD Card terisi penuh oleh data sensor. Hasil penelitian menunjukkan,bahwa metoda SPI yang diterapkan pada penelitian ini memiliki sifat akan melakukan pemeriksaan berulang pada pin MISO terhadap command yang dikirimkan oleh mikrokontroler melalui pin MOSI. Proses read/write data pada SD Card data logger memiliki keberhasilan 100%, karena SD Card telah terinisialisasi dalam mode SPI melalui perintah reset dan init SD Card. Komunikasi ini dapat dilakukan dengan menggunakan crystal 4 Mhz – 20 Mhz. Untuk pengujian konfigurasi SPI, hanya Independent Slave Configuration yang dapat digunakan pada komunikasi SPI dengan 2 SD card sebagai slave. Kata kunci: Serial Peripheral Interface (SPI, Data Logger, SD card, FAT16 ABSTRACT Serial Peripheral Interface (SPI is a communication protocol that can be applied as a communication interface between microcontroller to SD Card. By implementing the SPI method to a data logger based on SD Card, it can be known the characteristics of the SPI communications protocol between microcontroller to SD Card. SD Card formatted in FAT 16 type, and data on the SD Card is the form of sensor data packets collection which be captured periodically and saved in .csv format file. Based on the sensor data packet format is created, it can be calculated recording time data required so that the SD Card capacity completely filled by the

  11. New excited states in sd-shell nucleus {sup 33}P

    Energy Technology Data Exchange (ETDEWEB)

    Fu, B.; Reiter, P.; Arnswald, K.; Hess, H.; Hirsch, R.; Lewandowski, L.; Schneiders, D.; Seidlitz, M.; Siebeck, B.; Steinbach, T.; Vogt, A.; Wendt, A.; Wolf, K. [Institut fuer Kernphysik, Universitaet zu Koeln (Germany)

    2015-07-01

    Isospin-symmetry breaking in nuclear physics is mainly described by Mirror-Energy Differences (MED) for mirror nuclei or Triplet-Energy Differences (TED) for isobaric triplets. Modified USD-calculations successfully reproduce MED for T=1,3/2,2 sd-shell nuclei. Refined tests of theory are given by lifetime measurements in order to deduce transition-strength values. In order to study the mirror pair {sup 33}Ar and {sup 33}P, the fusion-evaporation reaction {sup 13}C+{sup 26}Mg at 46 MeV was measured at the Cologne tandem accelerator and the HORUS spectrometer employing the Doppler-Shift-Attenuation-Method (DSAM). First results yielded new γ-ray transitions in {sup 33}P and {sup 33}S. The level scheme of {sup 33}P was extended up to excitation energies of 10 MeV. Spins and parities of the new levels were determined exploiting γγ-angular correlations. Together with values from the proton-rich T{sub z} = - 3/2 partner, the levels are compared to shell model calculations, describing excitation energies of sd -shell mirror pairs. The understanding of isospin symmetry and isospin-symmetry breaking is a fundamental question in nuclear physics. Isospin-symmetry breaking is mainly described by Mirror-Energy Differences (MED) for mirror nuclei or Triplet-Energy Differences (TED) for isobaric triplets. Modified USD{sup m}{sub 1,2,3}-calculations successfully reproduced MED for the mirror nuclei {sup 33}Ar and {sup 33}P. Both {sup 33}P and {sup 33}S were produced at the Cologne FN tandem accelerator employing the fusion-evaporation reaction {sup 13}C+{sup 26}Mg at 46 MeV and spectroscopically investigated using 14 HPGe detectors. Several new energy states (in {sup 33}P) and γ-ray transitions (in {sup 33}P and {sup 33}S) were detected. Spins and parities of the new levels in {sup 33}P were determined exploiting γγ-angular correlations. The level scheme of {sup 33}P was extended up to excitation energies of 10 MeV.

  12. Concentrations of garenoxacin in plasma, bronchial mucosa, alveolar macrophages and epithelial lining fluid following a single oral 600 mg dose in healthy adult subjects.

    Science.gov (United States)

    Andrews, J; Honeybourne, D; Jevons, G; Boyce, M; Wise, R; Bello, A; Gajjar, D

    2003-03-01

    A microbiological assay was used to measure concentrations of garenoxacin (BMS-284756) in plasma, bronchial mucosa (BM), alveolar macrophages (AM) and epithelial lining fluid (ELF), following a single 600 mg oral dose. Twenty-four healthy subjects were allocated into four nominal time intervals after the dose, 2.5-3.5, 4.5-5.5, 10.5-11.5 and 23.5-24.5 h. Mean concentrations in plasma, BM, AM and ELF, respectively, for the four nominal time windows were for 2.5-3.5 h 10.0 mg/L (S.D. 2.8), 7.0 mg/kg (S.D. 1.3), 106.1 mg/L (S.D. 60.3) and 9.2 mg/L (S.D. 3.6); 4.5-5.5 h 8.7 mg/L (S.D. 2.2), 6.0 mg/kg (S.D. 1.9), 158.6 mg/L (S.D. 137.4) and 14.3 mg/L (S.D. 8.2); 10.5-11.5 h 6.1 mg/L (S.D. 1.9), 4.0 mg/kg (S.D. 1.4), 76.0 mg/L (S.D. 47.7) and 7.9 mg/L (S.D. 4.6); and 23.5-24.5 h 2.1 mg/L (S.D. 0.5), 1.7 mg/kg (S.D. 0.7), 30.7 mg/L (S.D. 12.9) and 3.3 mg/L (S.D. 2.3). Concentrations at all sites exceeded MIC(90)s for the common respiratory pathogens Haemophilus influenzae (0.03 mg/L), Moraxella catarrhalis (0.015 mg/L) and Streptococcus pneumoniae (0.06 mg/L). These data suggest that garenoxacin should be effective in the treatment of community-acquired pneumonia and chronic obstructive pulmonary disease.

  13. Mercury(II) and methyl mercury speciation on Streptococcus pyogenes loaded Dowex Optipore SD-2

    International Nuclear Information System (INIS)

    Tuzen, Mustafa; Uluozlu, Ozgur Dogan; Karaman, Isa; Soylak, Mustafa

    2009-01-01

    A solid phase extraction procedure based on speciation of mercury(II) and methyl mercury on Streptococcus pyogenes immobilized on Dowex Optipore SD-2 has been established. Selective and sequential elution with 0.1 mol L -1 HCl for methyl mercury and 2 mol L -1 HCl for mercury(II) were performed at pH 8. The determination of mercury levels was performed by cold vapour atomic absorption spectrometry (CVAAS). Optimal analytical conditions including pH, amounts of biosorbent, sample volumes, etc., were investigated. The influences of the some alkaline and earth alkaline ions and some transition metals on the recoveries were also investigated. The capacity of biosorbent for mercury(II) and methyl mercury was 4.8 and 3.4 mg g -1 . The detection limit (3 sigma) of the reagent blank for mercury(II) and methyl mercury was 2.1 and 1.5 ng L -1 . Preconcentration factor was calculated as 25. The relative standard deviations of the procedure were below 7%. The validation of the presented procedure is performed by the analysis of standard reference material (NRCC-DORM 2 Dogfish Muscle). The procedure was successfully applied to the speciation of mercury(II) and methyl mercury in natural water and environmental samples.

  14. Mercury(II) and methyl mercury speciation on Streptococcus pyogenes loaded Dowex Optipore SD-2

    Energy Technology Data Exchange (ETDEWEB)

    Tuzen, Mustafa, E-mail: m.tuzen@gmail.com [Gaziosmanpasa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat (Turkey); Uluozlu, Ozgur Dogan [Gaziosmanpasa University, Faculty of Science and Arts, Chemistry Department, 60250 Tokat (Turkey); Karaman, Isa [Gaziosmanpasa University, Faculty of Science and Arts, Biology Department, 60250 Tokat (Turkey); Soylak, Mustafa [Erciyes University, Faculty of Science and Arts, Chemistry Department, 38039 Kayseri (Turkey)

    2009-09-30

    A solid phase extraction procedure based on speciation of mercury(II) and methyl mercury on Streptococcus pyogenes immobilized on Dowex Optipore SD-2 has been established. Selective and sequential elution with 0.1 mol L{sup -1} HCl for methyl mercury and 2 mol L{sup -1} HCl for mercury(II) were performed at pH 8. The determination of mercury levels was performed by cold vapour atomic absorption spectrometry (CVAAS). Optimal analytical conditions including pH, amounts of biosorbent, sample volumes, etc., were investigated. The influences of the some alkaline and earth alkaline ions and some transition metals on the recoveries were also investigated. The capacity of biosorbent for mercury(II) and methyl mercury was 4.8 and 3.4 mg g{sup -1}. The detection limit (3 sigma) of the reagent blank for mercury(II) and methyl mercury was 2.1 and 1.5 ng L{sup -1}. Preconcentration factor was calculated as 25. The relative standard deviations of the procedure were below 7%. The validation of the presented procedure is performed by the analysis of standard reference material (NRCC-DORM 2 Dogfish Muscle). The procedure was successfully applied to the speciation of mercury(II) and methyl mercury in natural water and environmental samples.

  15. Effects of Weaning by Surrogate Mothers (ACI) on Tumor Development in SD Rats Treatedwith Methylnitrosourea (MNU) and/or N-Methyl-N-nitro-N-nitrosoguanidine (MNNG)

    OpenAIRE

    Shiraki, Katsuhisa; Lu, Huimei; Ishimura, Yoshimasa; Kashiwabara, Shoji; Uesaka, Toshihiro; Katoh, Osamu; Watanabe, Hiromitsu

    2002-01-01

    In this experiment, MNU was administered, followed by MNNG, to assess effects ofsurrogate mothering on tumor. One or two day old male SD pups were treated with or without30mg/kg body weight of methylnitrosourea (MNU) and nursed by SD or ACI surrogate mothersfor 5 weeks. When 6-weeks-old they were then treated with 100ppmN-methyl-N-nitro-N-nitrosoguanidine (MNNG) or tap water for 16 weeks. The tumor incidencein the MNNG alone group was significantly lower than with MNU alone or MNU+MNNG (p

  16. PFOS prenatal exposure induce mitochondrial injury and gene expression change in hearts of weaned SD rats

    International Nuclear Information System (INIS)

    Xia, Wei; Wan, Yanjian; Li, Yuan-yuan; Zeng, Huaicai; Lv, Ziquan; Li, Gengqi; Wei, Zhengzheng; Xu, Shun-qing

    2011-01-01

    Xenobiotics exposure in early life may have adverse effects on animals' development through mitochondrial injury or dysfunction. The current study demonstrated the possibility of cardiac mitochondrial injury in prenatal PFOS-exposed weaned rat heart. Pregnant Sprague-Dawley (SD) rats were exposed to perfluorooctane sulfonate (PFOS) at doses of 0.1, 0.6 and 2.0 mg/kg/d and 0.05% Tween 80 as control by gavage from gestation days 2-21. The dams were allowed to give nature delivery and then heart tissues from weaned (postnatal day 21) offspring rats were analyzed for mitochondrial injury through ultrastructure observation by electron microscope, global gene expression profile by microarray, as well as related mRNA and proteins expression levels by quantitative PCR and western blot. Ultrastructural analysis revealed significant vacuolization and inner membrane injury occurred at the mitochondria of heart tissues from 2.0 mg/kg/d dosage group. Meanwhile, the global gene expression profile showed significant difference in level of some mRNA expression associated with mitochondrial function at 2.0 mg/kg/d dosage group, compared to the control. Furthermore, dose-response trends for the expression of selected genes were analyzed by quantitative PCR and western blot analysis. The selected genes were mainly focused on those encoding for proteins involved in energy production, control of ion levels, and maintenance of heart function. The down-regulation of mitochondrial ATP synthetase (ATP5E, ATP5I and ATP5O) implicated a decrease in energy supply. This was accompanied by down-regulation of gene transcripts involved in energy consumption such as ion transporting ATPase (ATP1A3 and ATP2B2) and inner membrane protein synthesis (SLC25A3, SLC25A4, SLC25A10, SLC25A29). The up-regulation of gene transcripts encoding for uncoupling proteins (UCP1 and UCP3), epidermal growth factor receptor (EGFR) and connective tissue growth factor (CTGF), was probably a protective process to maintain

  17. Linkage relationship between semi-dwarfing gene sd-1 and gene for grain shattering in rice

    International Nuclear Information System (INIS)

    Oba, S.; Kikuchi, F.

    1990-01-01

    Full text: Most semidwarf rice cultivars carry the same gene sd-1. We observed an association between semi-dwarfness and grain shattering in isogenic lines carrying sd-1 from different sources in the background of the Japanese tall cultivar 'Norin 28'. The shattering was found to be caused by a single recessive gene, sh-2, linked to the sd-1 locus. The shattering gene seems to have been transmitted to many semi-dwarf cultivars together with sd-1, not only from 'Dee-geo-woo-gen' but also from the indica-cultivar 'Ai-jio-nan-te' and the japonica cultivar 'Shiranui'. (author)

  18. STUDI KOMPARASI BUDAYA SEKOLAH SDSN DAN SD EKS RSBI DI DAERAH ISTIMEWA YOGYAKARTA

    Directory of Open Access Journals (Sweden)

    Taufik Muhtarom

    2013-07-01

    Full Text Available Penelitian ini bertujuan untuk: (1 mengetahui perbedaan budaya sekolah di SDSN dan SD Eks RSBI DIY, (2 memaparkan perbedaan masing-masing aspek budaya sekolah antara SDSN dengan SD Eks RSBI. Jenis penelitian ini adalah komparasi. Populasi penelitian ini adalah semua kepala sekolah, guru, dan staf SDSN dan SD RSBI di Daerah Istimewa Yogyakarta yang berjumlah 797 orang untuk SDSN dan 155 orang untuk SD Eks RSBI. Sampel dari SDSN berjumlah 256 orang dan sampel dari SD Eks RSBI sebanyak 116 orang ditentukan menggunakan teknik proportional sampling. Pengumpulan data dilakukan menggunakan kuesioner. Teknik analisis data yang digunakan adalah analisis univariat, bivariat, dan uji-t. Hasil penelitian ini menunjukkan bahwa: (1 tidak terdapat perbedaan yang signifikan antara budaya sekolah SDSN dengan SD Eks RSBI di Daerah Istimewa Yogyakarta; (2 ditemukan perbedaan skor dari masing-masing aspek budaya sekolah di SDSN dan SD Eks RSBI DIY. Aspek budaya sekolah yang lebih baik di SDSN adalah kolaborasi profesional, hubungan kolegial, self determination, visi-misi, konsensus, dan disiplin. Sedangkan aspek budaya sekolah yang lebih unggul pada SD Eks RSBI adalah aspek komitmen, hormat, empati, bebas bullying dan artefak fisik. Kata kunci: budaya sekolah, SDSN, SD Eks RSBI

  19. Efficacy of 5MG and 10MG rosuvastatin in type-2 diabetes mellitus with hypercholesteroalemia

    International Nuclear Information System (INIS)

    Ullah, F.; Rahim, F.; Rahman, S.U.; Ashfaq, M.; Afridi, A.K.

    2015-01-01

    Background: Coronary Heart Disease (CHD) is the most important complication and the leading cause of death in patients with type 2 diabetes mellitus (T2DM). Hypercholesterolemia is an important modifiable risk factor for CHD. Statins are the first line drugs for the treatment of hypercholesterolemia in DM. Comparative studies between different statins are available but different doses of the same statin have not been compared in our population. The objective of this study is to compare mean reduction in serum LDL-C level after using 5mg and 10mg of rosuvastatin among T2DM patients with hypercholesterolemia. This study will help finding lowest effective dose of rosuvastatin to achieve internationally set low density lipoprotein cholesterol (LDL-C) goals. Method: A total of 82 patients with T2DM having fasting LDL-C levels equal or more than 100mg/dl were randomly allocated into two groups with 41 patients in each group. Baseline fasting serum LCL-C levels were obtained in all patients. Group A received 5mg while group B received 10mg of rosuvastatin daily at night. After 6 weeks, fasting LDL-C levels were obtained and analysed to compare the mean±SD reduction of LDL-C levels in both groups. Results: Baseline mean±SD LDL-C levels in group A and group B were 134.12±30.02 and 143.49±32.01 respectively (p 0.176). Follow up mean ± SD LDL-C levels were 81.59±28.47 and 83.24±36.06 respectively (p 0.818). Mean ± SD reduction in LDL-C levels from baseline levels in group A and group B were 52.51±19.49 and 60.20±24.09 (p 0.116). Conclusion: Rosuvastatin 5mg is as effective as 10mg in reducing the LDL-C levels in type 2 diabetic patients with hypercholesterolemia. (author)

  20. Effects of weaning by surrogate mothers (ACI) on tumor development in SD rats treated with methylnitrosourea (MNU) and/or N-methyl-N'-nitro-N-nitrosoguanidine (MNNG).

    Science.gov (United States)

    Shiraki, Katsuhisa; Lu, Huimei; Ishimura, Yoshimasa; Kashiwabara, Shoji; Uesaka, Toshihiro; Katoh, Osamu; Watanabe, Hiromitsu

    2002-09-01

    In this experiment, methylnitrosourea (MNU) was administered, followed by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG), to assess effects of surrogate mothering on tumor. One or two day old male SD pups were treated with or without 30 mg/kg body weight of MNU and nursed by SD or ACI surrogate mothers for 5 weeks. When 6-weeks-old they were then treated with 100 ppm MNNG or tap water for 16 weeks. The tumor incidence in the MNNG alone group was significantly lower than with MNU alone or MNU+MNNG (p surrogate mothers after treatment with MNU was increased as compared with the SD mother group. Cumulative development of tumors in the ACI surrogate mother group was also delayed (p mother's milk.

  1. Evaluation of SD BIOLINE H. pylori Ag rapid test against double ELISA with SD H. pylori Ag ELISA and EZ-STEP H. pylori Ag ELISA tests.

    Science.gov (United States)

    Negash, Markos; Kassu, Afework; Amare, Bemnet; Yismaw, Gizachew; Moges, Beyene

    2018-01-01

    Helicobacter pylori antibody titters fall very slowly even after successful treatment. Therefore, tests detecting H. pylori antibody lack specificity and sensitivity. On the other hand, H. pylori stool antigen tests are reported as an alternative assay because of their reliability and simplicity. However, the comparative performance of H. pylori stool antigen tests for detecting the presence of the bacterium in clinical specimens in the study area is not assessed. Therefore, in this study we evaluated the performance of SD BIOLINE H. pylori Ag rapid test with reference to the commercially available EZ- STEP ELISA and SD BIOLINE H. pylori Ag ELISA tests. Stool samples were collected to analyse the diagnostic performance of SD BIOLINE H. pylori Ag rapid test kit using SD H. pylori Ag ELISA kit and EZ- STEP ELISA tests as a gold standard. Serum samples were also collected from each patient to test for the presence of H. pylori antibodies using dBest H. pylori Test Disk. Sensitivity, specificity, predictive values and kappa value are assessed. P values H. pylori Ag rapid test were: 95.6% (95% CI, 88.8-98.8), 92.5% (95%CI, 89-94.1%), 86.7% (95% CI, 80.5-89.6), and 97.6% (95% CI, 993.9-99.3) respectively. The performance of SD BIOLINE H. pylori Ag rapid test was better than the currently available antibody test in study area. Therefore, the SD BIOLINE Ag rapid stool test could replace and be used to diagnose active H. pylori infection before the commencement of therapy among dyspeptic patients.

  2. Penelitian Serologis Polio pada Anak SD Pasca Bias-polio di Kabupaten Bogor

    OpenAIRE

    Gendrowahyuhono, Gendrowahyuhono; Yulitasari, Yulitasari; Purnamawati, Sinta; Klino, Klino

    2003-01-01

    Program BIAS-Polio sudah dilaksanakan pada bulan Nopember 1999 di seluruh SD di Indonesia dari kelas III sampai dengan kelas VI. Tujuan BIAS-Polio adalah untuk meningkatkan status imunitas anak terhadap infeksi virus polio sebingga dapat menghambat sirkulasi virus polio liar di masyarakat. Bias polio diberikan pada anak SD sebanyak 1 kali dosis.

  3. Automated Segmentability Index for Layer Segmentation of Macular SD-OCT Images

    NARCIS (Netherlands)

    Lee, K.; Buitendijk, G.H.; Bogunovic, H.; Springelkamp, H.; Hofman, A.; Wahle, A.; Sonka, M.; Vingerling, J.R.; Klaver, C.C.W.; Abramoff, M.D.

    2016-01-01

    PURPOSE: To automatically identify which spectral-domain optical coherence tomography (SD-OCT) scans will provide reliable automated layer segmentations for more accurate layer thickness analyses in population studies. METHODS: Six hundred ninety macular SD-OCT image volumes (6.0 x 6.0 x 2.3 mm3)

  4. Proxy support for service discovery using mDNS/DNS-SD in low power networks

    NARCIS (Netherlands)

    Stolikj, M.; Verhoeven, R.; Cuijpers, P.J.L.; Lukkien, J.J.

    2014-01-01

    We present a solution for service discovery of resource constrained devices based on mDNS/DNS-SD. We extend the mDNS/DNS-SD service discovery protocol with support for proxy servers. Proxy servers temporarily store information about services offered on resource constrained devices and respond on

  5. HOW TO MAKE A SINGLETON sdB STAR VIA ACCELERATED STELLAR EVOLUTION

    International Nuclear Information System (INIS)

    Clausen, Drew; Wade, Richard A.

    2011-01-01

    Many hot subdwarf B stars (sdBs) are in close binaries, and the favored formation channels for subdwarfs rely on mass transfer in a binary system to strip a core He-burning star of its envelope. However, these channels cannot account for sdBs that have been observed in long-period binaries nor the narrow mass distribution of isolated (or 'singleton') sdBs. We propose a new formation channel involving the merger of a helium white dwarf and a low-mass, hydrogen-burning star, which addresses these issues. Hierarchical triples whose inner binaries merge and form sdBs by this process could explain the observed long-period subdwarf+main-sequence binaries. This process would also naturally explain the observed slow rotational speeds of singleton sdBs. We also briefly discuss the implications of this formation channel for extreme horizontal branch morphology in globular clusters and the UV upturn in elliptical galaxies.

  6. Delay-controlled primary and stochastic resonances of the SD oscillator with stiffness nonlinearities

    Science.gov (United States)

    Yang, Tao; Cao, Qingjie

    2018-03-01

    This work presents analytical studies of the stiffness nonlinearities SD (smooth and discontinuous) oscillator under displacement and velocity feedback control with a time delay. The SD oscillator can capture the qualitative characteristics of quasi-zero-stiffness and negative-stiffness. We focus mainly on the primary resonance of the quasi-zero-stiffness SD oscillator and the stochastic resonance (SR) of the negative-stiffness SD oscillator. Using the averaging method, we have been analyzed the amplitude response of the quasi-zero-stiffness SD oscillator. In this regard, the optimum time delay for changing the control intensity according to the optimization standard proposed can be obtained. For the optimum time delay, increasing the displacement feedback intensity is advantageous to suppress the vibrations in resonant regime where vibration isolation is needed, however, increasing the velocity feedback intensity is advantageous to strengthen the vibrations. Moreover, the effects of time-delayed feedback on the SR of the negative-stiffness SD oscillator are investigated under harmonic forcing and Gaussian white noise, based on the Langevin and Fokker-Planck approaches. The time-delayed feedback can enhance the SR phenomenon where vibrational energy harvesting is needed. This paper established the relationship between the parameters and vibration properties of a stiffness nonlinearities SD which provides the guidance for optimizing time-delayed control for vibration isolation and vibrational energy harvesting of the nonlinear systems.

  7. Evaluation of the levels of Br, Cl, K, Mg, Mn and V in Perna perna Mussels (Linnaeus, 1758: Mollusca, Bivalvia) collected in coast of Sao Paulo, Brazil

    International Nuclear Information System (INIS)

    Seo, Daniele; Vasconcellos, Marina B.A.; Saiki, Mitiki; Catharino, Marilia G.M.; Moreira, Edson G.; Sousa, Eduinetty C.P.M. de

    2013-01-01

    In this study the content of Br, Cl, K, Mg, Mn and V was evaluated in samples of Perna perna mussels collected in coastal regions of Sao Paulo (Ponta de Itaipu and Palmas Island, in Santos) subjected to anthropogenic contamination, to compare these values with those of mussels from reference site of Cocanha Beach (in Caraguatatuba). The mussels were collected seasonally from September 2008 to July 2009. They were cleaned, ground, homogenized, lyophilized and then analyzed by Instrumental Neutron Activation Analysis (INAA). The INAA procedure consisted in the irradiation of the samples and synthetic elemental standards for 8 and 10 s, under a thermal neutron flux of 6.6 x 10 12 n cm -2 s -1 in the IEA-R1 nuclear research reactor. For quality control of analytical results, certified reference materials NIST 1566b Oyster Tissue and NIST 2876 Mussel Tissue were analyzed and their results indicated good accuracy. The ranges of concentrations (dry basis) of the elements obtained in mussels collected for the four seasons of the year were: 173.80 to 358.99 mg kg -1 for Br; 45658 ± 1811 to 109166 ± 824 mg kg -1 for Cl; 7043 ± 856 to 12506 ± 675 mg kg -1 for K; 2774 ± 211 to 5691 ± 717 mg kg -1 for Mg; 7.01 ± 0.30 to 29.74 ± 3.32 mg kg -1 for Mn and 0.77 ± 0.02 to 3.43 ± 0.28 mg kg -1 for V. The seasonal and spatial variations of these element concentrations were in this study. (author)

  8. Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars

    Directory of Open Access Journals (Sweden)

    L. Y. Zhu

    2015-02-01

    Full Text Available The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs. About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse profiles of these systems are very narrow and deep, which benefits the determination of high precise eclipsing times and makes the detection of small and close-in tertiary bodies possible. Since 2006 we have monitored some sdB-type eclipsing binaries to search for the close-in substellar companions by analyzing the light travel time effect. Here some progresses of the program are reviewed and the formation of sdB-type binary is discussed.

  9. Transcriptional analysis of heterologous gene expression using the endogenous sD promoter from Bacillus halodurans

    CSIR Research Space (South Africa)

    Crampton, Michael C

    2010-07-01

    Full Text Available This presentation focused on the transcriptional analysis of heterologous gene expression using the endogenous sD promoter from Bacillus halodurans. It concludes to a successful implementation of a high throughput mRNA sandwich hybridisation...

  10. Role of antisymmetric spin-orbit component in effective interactions in the sd-shell

    International Nuclear Information System (INIS)

    Yoshinada, K.

    1981-10-01

    The antisymmetric spin-orbit interaction (ALS) proposed for sd-shell nuclei is investigated. It is shown that the centroid energy of the d sub(5/2) - d sub(3/2) interactions plays a crucial role in reproducing the excited band spectra of A = 18 - 24 nuclei. An empirical effective interaction without ALS component is proposed to reproduce the observed spectra of light sd-shell nuclei. (author)

  11. G eobacter sp. SD-1 with enhanced electrochemical activity in high-salt concentration solutions

    KAUST Repository

    Sun, Dan; Call, Douglas; Wang, Aijie; Cheng, Shaoan; Logan, Bruce E.

    2014-01-01

    © 2014 Society for Applied Microbiology and John Wiley & Sons Ltd. Summary: An isolate, designated strain SD-1, was obtained from a biofilm dominated by Geobacter sulfurreducens in a microbial fuel cell. The electrochemical activity of strain SD-1 was compared with type strains, G.sulfurreducensPCA and Geobacter metallireducensGS-15, and a mixed culture in microbial electrolysis cells. SD-1 produced a maximum current density of 290±29Am-3 in a high-concentration phosphate buffer solution (PBS-H, 200mM). This current density was significantly higher than that produced by the mixed culture (189±44Am-3) or the type strains (<70Am-3). In a highly saline water (SW; 50mM PBS and 650mM NaCl), current by SD-1 (158±4Am-3) was reduced by 28% compared with 50mM PBS (220±4Am-3), but it was still higher than that of the mixed culture (147±19Am-3), and strains PCA and GS-15 did not produce any current. Electrochemical tests showed that the improved performance of SD-1 was due to its lower charge transfer resistance and more negative potentials produced at higher current densities. These results show that the electrochemical activity of SD-1 was significantly different than other Geobacter strains and mixed cultures in terms of its salt tolerance.

  12. G eobacter sp. SD-1 with enhanced electrochemical activity in high-salt concentration solutions

    KAUST Repository

    Sun, Dan

    2014-07-16

    © 2014 Society for Applied Microbiology and John Wiley & Sons Ltd. Summary: An isolate, designated strain SD-1, was obtained from a biofilm dominated by Geobacter sulfurreducens in a microbial fuel cell. The electrochemical activity of strain SD-1 was compared with type strains, G.sulfurreducensPCA and Geobacter metallireducensGS-15, and a mixed culture in microbial electrolysis cells. SD-1 produced a maximum current density of 290±29Am-3 in a high-concentration phosphate buffer solution (PBS-H, 200mM). This current density was significantly higher than that produced by the mixed culture (189±44Am-3) or the type strains (<70Am-3). In a highly saline water (SW; 50mM PBS and 650mM NaCl), current by SD-1 (158±4Am-3) was reduced by 28% compared with 50mM PBS (220±4Am-3), but it was still higher than that of the mixed culture (147±19Am-3), and strains PCA and GS-15 did not produce any current. Electrochemical tests showed that the improved performance of SD-1 was due to its lower charge transfer resistance and more negative potentials produced at higher current densities. These results show that the electrochemical activity of SD-1 was significantly different than other Geobacter strains and mixed cultures in terms of its salt tolerance.

  13. An evaluation of the SD Bioline HIV/syphilis duo test.

    Science.gov (United States)

    Holden, Jeffrey; Goheen, Joshua; Jett-Goheen, Mary; Barnes, Mathilda; Hsieh, Yu-Hsiang; Gaydos, Charlotte A

    2018-01-01

    Many health agencies now recommend routine HIV and syphilis testing for pregnant women and most-at-risk populations such as men who have sex with men. With the increased availability of highly sensitive, low cost rapid point-of-care tests, the ability to meet those recommendations has increased, granting wider access to quick and accurate diagnoses. Using blood specimens collected from a Baltimore City Health Department (BCHD) sexually transmitted infection clinic, we evaluated the SD Bioline HIV/Syphilis Duo, a rapid test that simultaneously detects antibodies to HIV and syphilis and has the potential to further benefit clinics and patients by reducing costs, testing complexity, and patient wait times. SD DUO HIV sensitivity and specificity, when compared to BCHD results, were 91.7 and 99.5%, respectively. SD DUO syphilis sensitivity and specificity, when compared to rapid plasma reagin, were 85.7 and 96.8%, respectively, and 69.7 and 99.7%, respectively, when compared to Treponema pallidum particle agglutination (TPPA). SD DUO syphilis sensitivity and specificity, when compared to a traditional screening algorithm, improved to 92.3 and 100%, respectively, and improved to 72.9 and 99.7%, respectively, when compared to a reverse screening algorithm. The HIV component of the SD DUO performed moderately well. However, results for the SD DUO syphilis component, when compared to TPPA, support the need for further testing and assessment.

  14. Thermodynamics of proton dissociations from aqueous glycine at temperatures from 278.15 to 393.15 K, molalities from 0 to 1.0 mol . kg-1, and at the pressure 0.35 MPa: Apparent molar heat capacities and apparent molar volumes of glycine, glycinium chloride, and sodium glycinate

    International Nuclear Information System (INIS)

    Ziemer, S.P.; Niederhauser, T.L.; Merkley, E.D.; Price, J.L.; Sorenson, E.C.; McRae, B.R.; Patterson, B.A.; Origlia-Luster, M.L.; Woolley, E.M.

    2006-01-01

    We have measured the densities of aqueous solutions of glycine, glycine plus equimolal HCl, and glycine plus equimolal NaOH at temperatures 278.15 ≤ T/K ≤ 368.15, molalities 0.01 ≤ m/mol . kg -1 ≤ 1.0, and at p = 0.35 MPa, using a vibrating tube densimeter. We have also measured the heat capacities of these solutions at 278.15 ≤ T/K ≤ 393.15 and at the same m and p using a fixed-cell differential scanning calorimeter. We used the densities to calculate apparent molar volumes V φ and the heat capacities to calculate apparent molar heat capacities C p,φ for these solutions. We used our results and values of V φ (T, m) and C p,φ (T, m) for HCl(aq), NaOH(aq), NaCl(aq) from the literature to calculate parameters for Δ r C p,m (T, m) for the first and second proton dissociations from protonated aqueous cationic glycine. We then integrated this value of Δ r C p,m (T, m) in an iterative algorithm, using Young's Rule to account for the effects of speciation and chemical relaxation on the observed V φ and C p,φ of the solutions. This procedure yielded parameters for V φ (T, m) and C p,φ (T, m) for glycinium chloride {H 2 Gly + Cl - (aq)} and sodium glycinate {Na + Gly - (aq)} which successfully modeled our observed results. We have then calculated values of Δ r C p,m , Δ r H m , Δ r V m , and pQ a for the first and second proton dissociations from protonated aqueous glycine as functions of T and m

  15. Purification and characterization of bacteriocin produced by oral Lactobacillus paracasei SD1.

    Science.gov (United States)

    Wannun, P; Piwat, S; Teanpaisan, R

    2014-06-01

    The present study aimed to purify and characterize the antimicrobial protein from Lactobacillus paracasei SD1, which is a strain from the human oral cavity. Antimicrobial activity was obtained from purifying the culture supernatant of L. paracasei SD1. Purification of the active compound was achieved with ammonium sulfate precipitation followed by chloroform and gel filtration chromatography. As revealed by SDS-PAGE, the active fraction was homogeneous, showing a protein with an approximate molecular weight of 25,000 Da. It was confirmed as having a molecular mass of 24,028.2 Da by mass spectrometry. The antimicrobial compound, named "paracasin SD1", exhibited a broad spectrum against oral pathogens. Paracasin SD1 was stable in a pH range between 3.0 and 8.0 at 100 °C for 5 min, and showed resistance to α-amylase, catalase, lysozyme and whole saliva. However, its activity was lost after proteinase K and trypsin treatment. The results obtained suggest the possibility of using paracasin SD1 for application in prevention/treatment of oral diseases. Copyright © 2014 Elsevier Ltd. All rights reserved.

  16. PENYELENGGARAAN PROGRAN SD-SMP SATU ATAP DALAM LATAR BUDAYA RUMAH BETANG KALIMANTAN TENGAH

    Directory of Open Access Journals (Sweden)

    Rudi Hasan

    2014-06-01

    Abstrak: Penyelenggaraan Progran SD-SMP Satu Atap dalam Latar Budaya Rumah Betang Kali­mantan Tengah. Penelitian ini bertujuan untuk mendeskripsikan penyelengaaraan program SD-SMP Satu Atap dalam latar budaya rumah Betang Kalimantan Tengah yang dikaitkan dengan struktur birokrasi, sumber daya, dan komunikasi. Penelitian kualitatif dilaksanakan di tiga lokasi, yaitu pada SMPN Satu Atap 1 Mihing Raya, SMPN Satu Atap 2 Kurun, dan SMPN Satu Atap 3 Tewah di Kabupaten Gunung Mas, Propinsi Kalimantan Tengah. Hasil penelitian menunjukkan bahwa acuan standar yang jelas, koordinasi yang intensif, dan pemberdayaan sumber daya manusia yang tepat sesuai dengan pendekatan nilai-nilai budaya rumah Betang dapat mencapai penyelenggaraan program SD-SMP Satu Atap yang efektif. Hal itu juga didukung oleh pengelolaan sumberdaya dan komunikasi yang mendasarkan diri pada nilai kekeluargaan, kebersamaan, loyalitas, dan keakraban.

  17. TEKNIK DAN STRATEGI TINDAK KESANTUNAN DIREKTIF DI KALANGAN ANDIK SD BERLATAR BELAKANG BUDAYA JAWA

    Directory of Open Access Journals (Sweden)

    Harun Joko Prayitno

    2011-12-01

    Full Text Available Studi ini bertujuan untuk merumuskan taksonomi tindak kesantunan direktif dikalangan andik SD yang berlatar belakang budaya Jawa. Tujuan spesifik studi iniadalah untuk merumuskan taksonomi dan pola semestaan realisasi tindakkesantunan direktif andik SD dalam hubungannya dengan prinsip dasar berbahasa PKS dan PSS; prinsip harmoni sosial PI dan PK. Objek penelitian ini adalah skala kelangsungan dan peringkat tindak kesantunandirektif dalam kaitannya PKS, PSS, prinsip harmoni sosial PI, PK, dn prinsip kultural budaya Jawa. Sumber data penelitian meliputi keseluruhan aktivitas berbahasa andik SD yang direfleksikan oleh guru kelas SD melalui FGD, baik dalam suasana formal maupun nonformal. Data penelitian berupa skala kelangsungan dan peringkat kesantunan pertuturan menurut PKS, PSS, PI, PK, dan Pk. Interpretasi perwujudan tindak kesantunan direktif dilakukan dengan kerja analisis pragmatik yang mengacu pada analisis heuristik model Grice, skala kelangsungan dan peringkat kesantunan model BrownLevinson. Hasil studi ini menunjukkan bahwa (1 perwujudan tindak kesantunan direktif (TKD di kalangan andik SD berlatar belakang budaya Jawa berkecenderungan diwujudkan melaui tipe menyuruh pada kategori memerintah dan tipe meminta pada kategori memohon. Temuan ini menggambarkah bahwa sesuai dengan kodratnya sebagai anak pada dasarnya masih memerlukan suri tauladan dari orang tuanya di rumah, gurunya di sekolah, dan panutannya sebagai yang difigurkan atau ditokohkan di lingkungan masyarakatnya masing-masing. (2 realisasi TKD di kalangan andik SD berlatar belakang budaya Jawa berkecenderungan dinyatakan dengan cara-cara tak langsung dan modus-modus nonliteral daripada dengan cara-cara langsung atau modus literal. Realisasi ini menggambarkan bahwa andik SD pada hakikatnya masih dalam masa perkembangan mental lingual sehingga masih memerlukan bimbingan yang bernilai positif, santun, dan berkarakter dari orang tua, guru, dan lingkungan

  18. MR imaging pulse sequence rationale: SD-, T1-, and T2-weighted images

    International Nuclear Information System (INIS)

    Sax, S.; Weathers, S.W.; Schneiders, N.J.; Horowitz, B.L.; Mawad, M.E.; Sandlin, M.E.; Blackwell, R.; Bryan, R.N.

    1986-01-01

    Over 500 patients have been examined with a pulse sequence designed to provide spin-density (SD)-weighted images (TR=3 sec, TE=35 msec), T1-weighted images (TR=0.3 sec, TE=35msec), and T2-weighted images (TR=3 sec, TE=105 msec) from which calculated ''synthesized'' images and SD, T1, and T2 calculated images could be obtained. Each image contributes unique information. SD-weighted images optimally display anatomy and often best highlight pathology. T1-weighted images are critical in assessing cerebral hemorrhages. T2-weighted images best display most lesions, but yield incomplete information in 35% of cases. All three types of ''weighted'' images are necessary to optimally display anatomy and fully characterize a lesion. Computerized calculations and simulations suggest that no other combination of pulse sequences yields equal information for a given examination time

  19. Revisiting PSS and service design in the light of the SD-logic

    DEFF Research Database (Denmark)

    Costa, Nina; Patrício, Lia; Morelli, Nicola

    2016-01-01

    are only means to an end. Also, different approaches, methods and tools have been developed to design value propositions however they still lack to explicit the SDlogic principles. The design of solutions that provide value-in-use is at the centre of both Product Service System (PSS) approach and service...... comprehensive discussion about these two approaches and proposes a conceptual framework for integrating PSS organizational point of view; and SD human-centred focus to design better service.......Researchers and practitioners have increasingly recognized the importance of offering value propositions to customers that enable value co-creation as discussed in the service dominant logic (SD-logic). SD-logic recognizes customers as active co-creators and posits that products and services...

  20. Effect of different seawater Mg

    NARCIS (Netherlands)

    Mewes, A.; Langer, G.; de Nooijer, L.J.; Bijma, J.; Reichart, G.J.

    2014-01-01

    Magnesium, incorporated in foraminiferal calcite (Mg/CaCC), is used intensively to reconstruct past seawater temperatures but, in addition to temperature, the Mg/CaCC of foraminiferal tests also depends on the ratio of Mg and Ca in seawater (Mg/CaSW). The physiological mechanisms responsible for

  1. The three shapes of 32Mg

    International Nuclear Information System (INIS)

    Poves, A.; Nowacki, F.; Caurier, E.

    2014-01-01

    The N=20 and N=28 'islands of inversion' are described by large scale shell model calculations which mix configurations with different Nℎω or equivalently with different number of particles promoted from the sd-shell to the p f-shell. We pay particular attention to the properties of the states at fix Nℎω which turn out to be the real protagonists of the physics at N=20. In particular we study the appearance of spherical, deformed and superdeformed structures in 32 Mg at fixed 0p-0h, 2p-2h and 4p-4h configurations. Finally we show that the islands of deformation at N=20 and N=28 merge in a single one for Magnesium isotopes. (authors)

  2. From novel mathematics to efficient algorithms. Do we have proper SD foundation to build future?

    Energy Technology Data Exchange (ETDEWEB)

    Tkachov, Fyodor V. [INR RAS, Moscow (Russian Federation)

    2002-08-01

    Computer implementation of sophisticated algorithms for physics applications is greatly facilitated by the new generation of component-oriented SD technologies pioneered by Wirth's Oberon and embraced by the software industry (Sun's Java and Microsoft's C no.). In a stark contrast with the deeply flawed C++, the Oberon technologies (specifically, the Component Pascal and the BlackBox development environment) offer an unparalleled SD platform for building scientific applications from sophisticated data processing to demanding symbolic calculations. Specific examples are discussed. (author)

  3. Microscopic descriptions of collective SD bands in the A=190 mass region with the Gogny force

    International Nuclear Information System (INIS)

    Girod, M.

    1997-01-01

    In the framework of microscopic models, we present two methods for describing superdeformed (SD) band properties. The first one is the cranked Hartree-Fock-Bogolyubov (HFB) method, without and with inclusion of particle number projection. The second one is the Gaussian overlap approximation to the generator coordinate method (GCM+GOA) with which we treat the five quadrupole collective coordinates. Both methods use the Gogny force. Moments of inertia and excitation energies of SD bands are calculated and compared with experimental results. (orig.). With 1 fig

  4. Nuclear structure of s-d shell nuclei: what is new?

    International Nuclear Information System (INIS)

    Shanmugam, G.

    1995-01-01

    In this paper the shape evolution of the even-even s-d shell nuclei with temperature and spin is studied using Landau theory of phase transitions. The most important thermal fluctuations are incorporated in this study. The ground state pairing is also included in the calculations. Both the summation and Strutinsky methods are used for extracting the Landau constants. Both yield qualitatively similar results. To conclude, Landau theory of phase transitions can be effectively and economically used to study the structure of excited s-d shell nuclei. 10 refs., 2 tabs., 8 figs

  5. The System Dynamics Model User Sustainability Explorer (SD-MUSE): a user-friendly tool for interpreting system dynamic models

    Science.gov (United States)

    System Dynamics (SD) models are useful for holistic integration of data to evaluate indirect and cumulative effects and inform decisions. Complex SD models can provide key insights into how decisions affect the three interconnected pillars of sustainability. However, the complexi...

  6. Effects of Onion (Allium cepa L. Extract Administration on Intestinal α-Glucosidases Activities and Spikes in Postprandial Blood Glucose Levels in SD Rats Model

    Directory of Open Access Journals (Sweden)

    Sun-Ho Kim

    2011-06-01

    Full Text Available Diets high in calories and sweetened foods with disaccharides frequently lead to exaggerated postprandial spikes in blood glucose. This state induces immediate oxidant stress and free radicals which trigger oxidative stress-linked diabetic complications. One of the therapeutic approaches for decreasing postprandial hyperglycemia is to retard absorption of glucose by the inhibition of carbohydrate hydrolyzing enzymes,α-amylase and α-glucosidases, in the digestive organs. Therefore, the inhibitory activity of Korean onion (Allium cepa L. extract against rat intestinal α-glucosidases, such as sucrase, maltase, and porcine pancreatic α-amylase were investigated in vitro and in vivo. The content of quercetin in ethyl alcohol extract of onion skin (EOS was 6.04 g/100 g dried weight of onion skin. The in vitro half-maximal inhibitory concentrations (IC50 of EOS and quercetin, a major phenolic in onion, on rat intestinal sucrase were 0.40 and 0.11 mg/mL, respectively. The postprandial blood glucose lowering effects of EOS and quercetin were compared to a known type 2 diabetes drug (Acarbose, a strong α-glucosidase inhibitor in the Sprague-Dawley (SD rat model. In rats fed on sucrose, EOS significantly reduced the blood glucose spike after sucrose loading. The area under the blood glucose-time curve (AUClast in EOS-treated SD rats (0.5 g-EOS/kg was significantly lower than in untreated SD rats (259.6 ± 5.1 vs. 283.1 ± 19.2 h·mg/dL. The AUClast in quercetin-treated SD rats (0.5 g-quercetin/kg was similar to in EOS-treated group (256.1 ± 3.2 vs. 259.6 ± 5.1 h·mg/dL. Results from this study indicates that although quercetin does have blood glucose lowering potential via α-glucosidase inhibition, there are other bioactive compounds present in onion skin. Furthermore, the effects of two weeks administration of EOS in a high carbohydrate-dietary mixture (Pico 5053 on sucrase and maltase activities in intestine were evaluated in SD rat model

  7. Single oral dose toxicity test of polycalcium, a mixed composition of polycan and calcium lactate-gluconate 1:9 (G/G) in SD rat.

    Science.gov (United States)

    Kim, Joo-Wan; Choi, Jae-Suk; Ha, Yu-Mi; Choi, In Soon; Kim, Ki-Young; Cho, Hyung-rae; Rha, Chae-hun; Ku, Sae-Kwang

    2013-11-01

    The object of this study was to obtain acute oral toxicity information of Polycalcium, a mixed composition of Polycan and Calcium lactate-gluconate 1:9 (g/g), in Sprague-Dawely (SD) rats. In order to investigate the toxicity and identify target organs, Polycalcium were once orally administered to female and male SD rats at dose levels of 2000, 1000, 500 and 0 (control) mg/kg body weights. The mortality, changes on body weight and clinical signs were monitored during 14 days after treatment with gross observation, changes on the organ weights and histopathology of principle organs and treatment sites based on the recommendation of KFDA Guidelines [2009-116, 2009]. As the results of single oral treatment of Polycalcium, no treatment related mortalities were observed within 14 days after end of treatment up to 2000 mg/kg, the limited dosage of rodents in the both genders. In addition, no Polycalcium treatment related changes on the body and organ weights, clinical signs, necropsy and histopathological findings were detected. The results obtained in this study suggest that the Polycalcium is non-toxic in rats. The LD50 and approximate LD in rats after single oral dose of Polycalcium were considered over 2000 mg/kg in both female and male, respectively.

  8. Evaluation of the sedimentation rate in a sediment profile of Bortolan Dam, MG, Brazil

    International Nuclear Information System (INIS)

    Almeida, Heleine C. de; Soares, Flávio V.T.S.; Taddei, Maria Helena T.; Mazzilli, Barbara P.

    2017-01-01

    Volcanic extrusion is one of the main causes for the high levels of environmental radioactivity in the region of Poços de Caldas (MG, Brazil). Uranium mining during the 80's further increased the background radiation in the region, especially in the Ribeirao das Antas watershed, where Bortolan Dam is located. Besides the uranium mining facility operating in the region, other activities, such as agriculture, were also responsible for the enhancement of the levels of radioactivity. The dam sediment profile provides an appropriate compartment for the study of the temporal variation of these radionuclides and for the evaluation of anthropogenic contamination. The main aim of this study is to evaluate the sedimentation rate and the dating of a profile collected in Bortolan Dam, by using the geochronology method. The activity concentration of "2"2"6Ra and "2"1"0Pb were measured in the sediment profile by gamma spectrometry. The concentration of "2"2"6Ra and "2"1"0Pb varied from (217 ± 9) Bq kg"-"1 to (286 ± 12) Bq kg"-"1 and from (262 ± 11) Bq kg"-"1 to (322 ± 34) Bq·kg"-"1 respectively; and the sedimentation rates varied from 0.021 to 0.144 g cm"-"2y"-"1. (author)

  9. 75 FR 31464 - Certification of the Attorney General; Shannon County, SD

    Science.gov (United States)

    2010-06-03

    ... DEPARTMENT OF JUSTICE Certification of the Attorney General; Shannon County, SD In accordance with... within the scope of the determinations of the Attorney General and the Director of the Census made under...., Attorney General of the United States. [FR Doc. 2010-13285 Filed 6-2-10; 8:45 am] BILLING CODE P ...

  10. Positron annihilation and pressure-induced electronic s-d transition

    International Nuclear Information System (INIS)

    McMahan, A.K.; Skriver, H.L.

    1985-06-01

    The polycrystalline, partial annihilation rates for positrons in compressed cesium have been calculated using the linear muffin-tin orbitals method. These results suggest that the pressure-induced electronic s-d transition in Cs should be directly observable by momentum sensitive positron annihilation experiments

  11. 76 FR 1985 - Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes

    Science.gov (United States)

    2011-01-12

    ... Airworthiness Directives; Short Brothers PLC Model SD3 Airplanes AGENCY: Federal Aviation Administration (FAA..., at an average labor rate of $85 per work hour. Required parts cost about $10 per product. Based on.... The average labor rate is $85 per work-hour. Based on these figures, we estimate the cost of the AD on...

  12. Semi-automatic geographic atrophy segmentation for SD-OCT images.

    Science.gov (United States)

    Chen, Qiang; de Sisternes, Luis; Leng, Theodore; Zheng, Luoluo; Kutzscher, Lauren; Rubin, Daniel L

    2013-01-01

    Geographic atrophy (GA) is a condition that is associated with retinal thinning and loss of the retinal pigment epithelium (RPE) layer. It appears in advanced stages of non-exudative age-related macular degeneration (AMD) and can lead to vision loss. We present a semi-automated GA segmentation algorithm for spectral-domain optical coherence tomography (SD-OCT) images. The method first identifies and segments a surface between the RPE and the choroid to generate retinal projection images in which the projection region is restricted to a sub-volume of the retina where the presence of GA can be identified. Subsequently, a geometric active contour model is employed to automatically detect and segment the extent of GA in the projection images. Two image data sets, consisting on 55 SD-OCT scans from twelve eyes in eight patients with GA and 56 SD-OCT scans from 56 eyes in 56 patients with GA, respectively, were utilized to qualitatively and quantitatively evaluate the proposed GA segmentation method. Experimental results suggest that the proposed algorithm can achieve high segmentation accuracy. The mean GA overlap ratios between our proposed method and outlines drawn in the SD-OCT scans, our method and outlines drawn in the fundus auto-fluorescence (FAF) images, and the commercial software (Carl Zeiss Meditec proprietary software, Cirrus version 6.0) and outlines drawn in FAF images were 72.60%, 65.88% and 59.83%, respectively.

  13. Context based service discovery in unmanaged networks using MDNS/DNS-SD

    NARCIS (Netherlands)

    Stolikj, M.; Cuijpers, P.J.L.; Lukkien, J.J.; Buchina, N.; Bellido, F.J.; Vun, N.C.H.; Dolar, C.; Diaz-Sanchez, D.; Ling, W.-K.

    2016-01-01

    We propose an extension of the mDNS/DNS-SD service discovery protocol, which enables service clients to discover and select services based on their context. The extension improves scalability in large networks, which is of particular importance in future Internet of Things deployments.

  14. Peran modal sosial dalam implementasi konsep pemikiran Ki Hadjar Dewantara di SD Taman Muda Yogyakarta

    Directory of Open Access Journals (Sweden)

    Sukma Wijayanto

    2017-09-01

    Full Text Available Penelitian ini bertujuan untuk mendeskripsikan: (1 implementasi pendidikan Ki Hadjar Dewantara; dan (2 modal sosial di SD Taman Siswa Jetis. Penelitian menggunakan pendekatan kualitatif dengan jenis penelitian studi kasus. Unit analisis penelitian adalah SD Tamansiswa Jetis. Penentuan subjek dalam penelitian ini menggunakan teknik purposive sampling dengan subjek penelitian adalah pamong, kepala sekolahdan ketua yayasan Majelis Luhur Persatuan Tamansiswa cabang Jetis. Teknik pengumpulan data menggunakan observasi partisipatif, wawancara dan dokumentasi. Teknik analisis penelitian ini menggunakan model interaktif Milles & Huberman. Berdasarkan penelitian diperoleh sebagai berikut: (1 Konsep pemikiran Ki Hadjar terlaksana di SD Taman Siswa Jetis yakni sistem among tidak dapat dipisahkan prinsip kemerdekaan dan kodrat alam. Pelaksanaan sistem among dilaksanakan dengan keteladanan, pembiasaan, pengajaran, serta hukumam, paksaan dan perintah. (2 Trust, Jaringan, dan norm dalam melaksanakan konsep Ki Hadjar Dewantara menggunakan nilai-nilai kekeluargaan. Kekeluargaan modal sosial yang menjadi kekuatan dalam melaksanakan konsep pendidikan Ki Hadjar di SD Taman Siswa Jetis.Kata kunci: Ki Hadjar Dewantara, Konsep Pendidikan Ki Hadjar Dewantara, Modal Sosial

  15. EVALUASI IMPLEMENTASI TQM PADA SDN KARANGREJEK II DAN SD MUHAMMADIYAH AL MUJAHIDIN WONOSARI GUNUNGKIDUL

    Directory of Open Access Journals (Sweden)

    Eko Pramono

    2015-10-01

    Full Text Available Penelitian ini bertujuan mengetahui: (1 seberapa besar tingkat implementasi TQM, (2 perbandingan implementasi, (3 aspek-aspek yang perlu mendapatkan perbaikan untuk ditingkatkan. Penelitian evaluasi dengan model descrepancy. Instrumen pengumpul data berupa angket jawaban skala 2 terdiri atas 69 butir. Teknik analisis data menggunakan teknik persentase. Hasil penelitian menunjukkan bahwa: (1 implementasi TQM di SD Negeri Karangrejek II rata-rata sebesar 87,73%, aspek-aspek yang mendekati standar: mutu pembelajaran, organisasi terbalik, perubahan kultur, kolega sebagai pelanggan, profesionalisme, dan pemasaran internal. Implementasi TQM di SD Muhammadiyah Al Mujahidin rata-rata sebesar 94,42%. Aspek-aspek yang mendekati standar: organisasi terbalik, mutu pembelajaran, perubahan kultur, profesionalisme, kaizen dan menjaga hubungan dengan pelanggan. (2 Perbandingan implementasi TQM sebagai berikut: aspek mutu pembelajaran, organisasi terbalik dan perubahan kultur merupakan aspek dengan rata-rata tertinggi di SD Karangrejek II, sedangkan di SD Muhammadiyah Al Mujahidin: aspek organisasi terbalik, mutu pembelajaran, dan perubahan kultur. (3 Aspek yang perlu mendapatkan perbaikan di kedua sekolah adalah perbaikan terus-menerus.

  16. Learning from CDM SD tool experience for Article 6.4 in the Paris Agreement

    DEFF Research Database (Denmark)

    Olsen, Karen Holm; Arens, Christof; Mersmann, Florian

    2017-01-01

    The Paris Agreement (PA) emphasizes the intrinsic relationship between climate change and sustainable development (SD) and welcomes the 2030 agenda for the global Sustainable Development Goals (SDGs). Yet, there is a lack of assessment approaches to ensure that climate and development goals...

  17. Canister storage building compliance assessment SNF project NRC equivalency criteria - HNF-SD-SNF-DB-003

    International Nuclear Information System (INIS)

    BLACK, D.M.

    1999-01-01

    This document presents the Project's position on compliance with the SNF Project NRC Equivalency Criteria - HNF-SD-SNF-DE-003, Spent Nuclear Fuel Project Path Forward Additional NRC Requirements. No non-compliances are shown. The compliance statements have been reviewed and approved by DOE. Open items are scheduled to be closed prior to project completion

  18. An Atlantic streamer in stratospheric ozone observations and SD-WACCM simulation data

    Science.gov (United States)

    Hocke, Klemens; Schranz, Franziska; Maillard Barras, Eliane; Moreira, Lorena; Kämpfer, Niklaus

    2017-03-01

    Observation and simulation of individual ozone streamers are important for the description and understanding of non-linear transport processes in the middle atmosphere. A sudden increase in mid-stratospheric ozone occurred above central Europe on 4 December 2015. The GROund-based Millimeter-wave Ozone Spectrometer (GROMOS) and the Stratospheric Ozone MOnitoring RAdiometer (SOMORA) in Switzerland measured an ozone enhancement of about 30 % at 34 km altitude (8.3 hPa) from 1 to 4 December. A similar ozone increase is simulated by the Specified Dynamics Whole Atmosphere Community Climate (SD-WACCM) model. Further, the global ozone fields at 34 km altitude (8.3 hPa) from SD-WACCM and the satellite experiment Aura/MLS show a remarkable agreement for the location and timing of an ozone streamer (large-scale tongue-like structure) extending from the subtropics in northern America over the Atlantic to central Europe. This agreement indicates that SD-WACCM can inform us about the wind inside the Atlantic ozone streamer. SD-WACCM shows an eastward wind of about 100 m s-1 inside the Atlantic streamer in the mid-stratosphere. SD-WACCM shows that the Atlantic streamer flows along the edge of the polar vortex. The Atlantic streamer turns southward at an erosion region of the polar vortex located above the Caspian Sea. The spatial distribution of stratospheric water vapour indicates a filament outgoing from this erosion region. The Atlantic streamer, the polar vortex erosion region and the water vapour filament belong to the process of planetary wave breaking in the so-called surf zone of the northern midlatitude winter stratosphere.

  19. Involvement of Fenton chemistry in rice straw degradation by the lignocellulolytic bacterium Pantoea ananatis Sd-1.

    Science.gov (United States)

    Ma, Jiangshan; Zhang, Keke; Huang, Mei; Hector, Stanton B; Liu, Bin; Tong, Chunyi; Liu, Qian; Zeng, Jiarui; Gao, Yan; Xu, Ting; Liu, Ying; Liu, Xuanming; Zhu, Yonghua

    2016-01-01

    Lignocellulolytic bacteria have revealed to be a promising source for biofuel production, yet the underlying mechanisms are still worth exploring. Our previous study inferred that the highly efficient lignocellulose degradation by bacterium Pantoea ananatis Sd-1 might involve Fenton chemistry (Fe 2+  + H 2 O 2  + H +  → Fe 3+  + OH· + H 2 O), similar to that of white-rot and brown-rot fungi. The aim of this work is to investigate the existence of this Fenton-based oxidation mechanism in the rice straw degradation process of P. ananatis Sd-1. After 3 days incubation of unpretreated rice straw with P. ananatis Sd-1, the percentage in weight reduction of rice straw as well as its cellulose, hemicellulose, and lignin components reached 46.7, 43.1, 42.9, and 37.9 %, respectively. The addition of different hydroxyl radical scavengers resulted in a significant decline ( P  Fenton reagent treatment. In addition to the increased total iron ion concentration throughout the rice straw decomposition process, the Fe 3+ -reducing capacity of P. ananatis Sd-1 was induced by rice straw and predominantly contributed by aromatic compounds metabolites. The transcript levels of the glucose-methanol-choline oxidoreductase gene related to hydrogen peroxide production were significantly up-regulated (at least P  Fenton-like reactions. Our results confirmed the Fenton chemistry-assisted degradation model in P. ananatis Sd-1. We are among the first to show that a Fenton-based oxidation mechanism exists in a bacteria degradation system, which provides a new perspective for how natural plant biomass is decomposed by bacteria. This degradative system may offer an alternative approach to the fungi system for lignocellulosic biofuels production.

  20. Test characteristics of two rapid antigen detection tests (SD FK50 and SD FK60 for the diagnosis of malaria in returned travellers

    Directory of Open Access Journals (Sweden)

    Van Esbroeck Marjan

    2009-05-01

    Full Text Available Abstract Background Two malaria rapid diagnostic tests were evaluated in a travel clinic setting: the SD FK50 Malaria Ag Plasmodium falciparum test (a two-band test and the SD FK60 Malaria Ag P. falciparum/Pan test (a three-band test. Methods A panel of stored whole blood samples (n = 452 and n = 614 for FK50 and FK60, respectively from returned travellers was used. The reference method was microscopy with PCR in case of discordant results. Results For both tests, overall sensitivity for the detection of P. falciparum was 93.5%, reaching 97.6% and 100% at parasite densities above 100 and 1,000/μl respectively. Overall sensitivities for Plasmodium vivax, Plasmodium ovale and Plasmodium malariae for the FK60 test were 87.5%, 76.3% and 45.2%, but they reached 92.6% and 90.5% for P. vivax and P. ovale at parasite densities above 500/μl. Specificities were above 95% for all species and both tests when corrected by PCR, with visible histidine-rich protein-2 lines for P. malariae (n = 3 and P. vivax and P. ovale (1 sample each. Line intensities were reproducible and correlated to parasite densities. The FK60 tests provided clues to estimate parasite densities for P. falciparum below or above 1,000/μl. Conclusion Both the FK50 and FK60 performed well for the diagnosis of P. falciparum in the present setting, and the FK60 for the diagnosis of P. vivax and P. ovale at parasite densities > 500/μl. The potential use of the FK60 as a semi-quantitative estimation of parasite density needs to be further explored.

  1. Dose of rocuronium for rapid tracheal intubation following remifentanil 2 μg kg-1 and propofol 2 mg kg-1.

    Science.gov (United States)

    Oh, Ah-Young; Cho, Suk-Ju; Seo, Kwang-Suk; Ryu, Jung-Hee; Han, Sung-Hee; Hwang, Jung-Won

    2013-09-01

    Full relaxation is not mandatory for successful tracheal intubation. We tried to find the dose of rocuronium that gave acceptable intubation conditions in a rapid sequence intubation with remifentanil and propofol. A dose-finding study of rocuronium using a modified Dixon's up-and-down method. A single tertiary care teaching hospital. Patients undergoing elective surgery under general anaesthesia. After premedication with midazolam and glycopyrrolate, anaesthesia was induced using remifentanil 2 μg kg and propofol 2 mg kg, and a predetermined dose of rocuronium was administered. The dose of rocuronium was determined by a modified Dixon's up-and-down method starting from 0.8 mg kg with an interval of 0.1 or 0.05 mg kg. Intubation was performed 60 s after the start of the rocuronium injection. Intubation conditions were graded as excellent, good or poor. Excellent or good were regarded as clinically acceptable. A dose of rocuronium needed for acceptable intubation condition in 50% of patients (ED50) during rapid tracheal intubation after induction of anaesthesia with remifentanil and propofol. Twenty-eight patients were enrolled to obtain six crossovers. The ED50 of rocuronium was 0.20 mg kg (95% confidence interval, CI 0.17 to 0.23 mg kg) by a modified Dixon's up-and-down method. After induction of anaesthesia with remifentanil 2 μg kg and propofol 2 mg kg, the ED50 of rocuronium for acceptable intubation condition was 0.20 mg kg (95% CI, 0.17 to 0.23 mg kg) for rapid sequence intubation. Thus, we recommend that the intubation dose should be 0.8 mg kg. Clinical trial registration KCT0000094.

  2. Critical current oscillations in S/F heterostructures in the presence of s-d scattering

    International Nuclear Information System (INIS)

    Vedyayev, A.V.; Ryzhanova, N.V.; Pugach, N.G.

    2006-01-01

    Josephson current is investigated in the superconductor/ferromagnet/superconductor junction. It was shown that the current exhibited damping oscillations as a function of the ferromagnetic layer thickness. Previous theories based on Usadel or Eilenberger equations have predicted that the damping length and oscillation period divided by 2π were the same for weak ferromagnetic spacer. This contradicts past experiments. A new calculation of the Josephson current is proposed. The Gorkov equations are solved taking into account s-d scattering in ferromagnet. It is shown that the oscillation period depends only on the exchange magnetic field in the spacer, whereas the damping length is connected to the ferromagnetic mean free path. The concordance with the former experiment allows one to conclude that s-d scattering as a pair-breaking mechanism plays a significant role in the proximity effect in S/F heterostructures

  3. Somatoform abdominal pain in surgery: is SD worthy of surgical attention? Case reports and literature review.

    LENUS (Irish Health Repository)

    Abd Elwahab, Sami Medani

    2012-08-01

    Somatoform disorders (SD) or medically unexplained physical symptoms (MUPS) are a group of disorders that represent a group of symptoms that cannot be explained by an organic or physical pathology. These disorders are widely prevalent, and, if unrecognised, SD may lead medical professionals to embark on tests or procedures which may inflict unnecessary iatrogenic complications. Despite the high prevalence, they are only poorly included in medical training curricula, at both undergraduate and postgraduate levels. In this article, we review the literature and present two cases. The first one presented with a recurrent acute abdomen had an unnecessary CT abdomen. The second case had laparoscopy for acute right-sided abdominal pain which turned out to be normal, and was readmitted again after a short period with acute urine retention which resolved spontaneously following discussion with the patient and family. Both cases were referred for psychiatric assessment and their family doctors were informed.

  4. Complex dynamics of an archetypal self-excited SD oscillator driven by moving belt friction

    International Nuclear Information System (INIS)

    Li Zhi-Xin; Cao Qing-Jie; Alain, Léger

    2016-01-01

    We propose an archetypal self-excited system driven by moving belt friction, which is constructed with the smooth and discontinuous (SD) oscillator proposed by the Cao et al. and the classical moving belt. The moving belt friction is modeled as the Coulomb friction to formulate the mathematical model of the proposed self-excited SD oscillator. The equilibrium states of the unperturbed system are obtained to show the complex equilibrium bifurcations. Phase portraits are depicted to present the hyperbolic structure transition, the multiple stick regions, and the friction-induced asymmetry phenomena. The numerical simulations are carried out to demonstrate the friction-induced vibration of multiple stick-slip phenomena and the stick-slip chaos in the perturbed self-excited system. The results presented here provide an opportunity for us to get insight into the mechanism of the complex friction-induced nonlinear dynamics in mechanical engineering and geography. (paper)

  5. Pengembangan Instrumen Penilaian Mapel Sains melalui Pendekatan Keterampilan Proses Sains SD/MI

    Directory of Open Access Journals (Sweden)

    Moh. Arif

    2016-06-01

    Full Text Available Penulisan artikel ini bertujuan untuk memberikan format pengembangan intrumen penilaian keterampilan proses sains SD yang masih menjadi problematika untuk menentukan pengembangan instrumen. Di samping itu, artikel ini ditulis untuk mengetahui karakteristik dan beberpa prosedur pelaksanaan penilaian proses sains SD dengan memberikan format pengembangan instrumen penialaian proses sains yang meliputi penyusunan rencana penelitian, penyusunan kisi-kisi, pembuatan soal sampai pada penganalisian butir soal. Konsep dasar penilaian yang perlu ditekankan adalah keefektivan instrumen penilaian, yang terdiri dari tiga unsur utama yakni valid (validity, reliabel (reliability, dan praktis (practicality. Berdasarkan tujuan dan perbedaan waktu pelaksanaanya, terdapat tiga jenis bentuk penilaian proses sains pada siswa Sekolah Dasar: Penilaian Diagnostik, Penilaian formatif dan Penilaian sumatif. Tes akan dianalisis secara kualitatif baik dari segi materi, konstruksi maupun bahasa. Analisis secara kuantitatif dengan pendekatan teori tes klasik yakni dengan Iteman dan analisis secara kuantitatif menggunakan pendekatan teori tes modern yakni program Bigstep.

  6. PELAKSANAAN PROGRAM PERILAKU HIDUP BERSIH DAN SEHAT (PUBS DI SD NEGERI 001 TANJUNG BALAI KARIMUN

    Directory of Open Access Journals (Sweden)

    Fivi Melva Diana

    2013-09-01

    Full Text Available Laporan Tahunan Tahun 2011 Dinas kesehatan Kabupaten Karimun, sekolah yang telah melaksanakan PHBS hanya 22,5% dengan target 65% sedangkan target nasional intitusi pendidikan yang melaksanakanPHBS adalah 70% ditahun 2014. Rendahnya cakupan ini berdampak juga terhadap tingginya angka kesakitan yang berhubungan dengan penyakit yang berorientasi lingkungan dan perilaku. Tujuan penelitian adalah mengetahui hubungan sikap, pengetahuan dan peran guru dengan pelaksanaan PHBS di SD negeri 001 Tanjung Balai Karimun Tahun 2013. Desain Crossectional Study, populasi adalah seluruh murid kelas IV, V dan IV, sedangkan sampel sebanyak 64 orang dan dibagi secara proporsionaluntuk masing-masingkelas. Data dikumpulkan melalui kuesioner, diolah dengan uji Chi-square. Darihasil uji statistik terdapat hubunganbermakna antara pengetahuan, dan peran guru dengan pelaksanan program PHBS pada anak sekolah di SD Negeri 001 Tanjung Balai Karimun Tahun 2013 (p>0,05.Disarankan untuk meningkatan pengetahuan melalui pelatihan, penyuluhan dan memperbanyak mediapromosi seperti poster, leaflet dll.

  7. Spectral analysis of the He-enriched sdO-star HD 127493

    Science.gov (United States)

    Dorsch, Matti; Latour, Marilyn; Heber, Ulrich

    2018-02-01

    The bright sdO star HD127493 is known to be of mixed H/He composition and excellent archival spectra covering both optical and ultraviolet ranges are available. UV spectra play a key role as they give access to many chemical species that do not show spectral lines in the optical, such as iron and nickel. This encouraged the quantitative spectral analysis of this prototypical mixed H/He composition sdO star. We determined atmospheric parameters for HD127493 in addition to the abundance of C, N, O, Si, S, Fe, and Ni in the atmosphere using non-LTE model atmospheres calculated with TLUSTY/SYNSPEC. A comparison between the parallax distance measured by Hipparcos and the derived spectroscopic distance indicate that the derived atmospheric parameters are realistic. From our metal abundance analysis, we find a strong CNO signature and enrichment in iron and nickel.

  8. Electric and magnetic dipole transitions from broad s-wave neutron resonance in even-even sd-shell nuclei

    International Nuclear Information System (INIS)

    Kitazawa, H.; Igashira, M.; Shimizu, M.; Muto, K.; Oda, T.; Achiha, Y.; Lee, Y.; Mukai, N.

    1992-01-01

    Observations have been performed for electromagnetic transitions from the broad s-wave neutron resonances at 658 keV in 24 Mg, at 180 keV in 28 Si, and at 103 keV in 32 S. Capture gamma rays were measured with an anti-Compton NaI(Tl) detector, using a neutron time-of-flight technique. E1 and M1 transitions from those resonances to low-lying states with a strong single-particle character were found. The deduced partial radiative widths for E1 transition are in excellent agreement with the Lane-Mughabghab valence-capture model calculations taking the neutron effective charge, -Ze/A. Moreover, it is shown that essential features of the observed E1 and M1 transitions can be well explained by assuming a configuration-mixing wave function, Ψ i (1/2 + )=a(0 + direct-product 1/2 + )+b(1 + direct-product 1/2 + )+c(1 + direct-product 3/2 + ), for each resonance. The M1 transition strengths are compared also with more detailed shell model calculations in the model space of full (sd) n configurations, using the Wildenthal effective interaction

  9. Quasicrystal-reinforced Mg alloys.

    Science.gov (United States)

    Kyun Kim, Young; Tae Kim, Won; Hyang Kim, Do

    2014-04-01

    The formation of the icosahedral phase (I-phase) as a secondary solidification phase in Mg-Zn-Y and Mg-Zn-Al base systems provides useful advantages in designing high performance wrought magnesium alloys. The strengthening in two-phase composites (I-phase + α -Mg) can be explained by dispersion hardening due to the presence of I-phase particles and by the strong bonding property at the I-phase/matrix interface. The presence of an additional secondary solidification phase can further enhance formability and mechanical properties. In Mg-Zn-Y alloys, the co-presence of I and Ca 2 Mg 6 Zn 3 phases by addition of Ca can significantly enhance formability, while in Mg-Zn-Al alloys, the co-presence of the I-phase and Mg 2 Sn phase leads to the enhancement of mechanical properties. Dynamic and static recrystallization are significantly accelerated by addition of Ca in Mg-Zn-Y alloy, resulting in much smaller grain size and more random texture. The high strength of Mg-Zn-Al-Sn alloys is attributed to the presence of finely distributed Mg 2 Sn and I-phase particles embedded in the α -Mg matrix.

  10. Gene Profiling in Late Blight Resistance in Potato Genotype SD20

    Directory of Open Access Journals (Sweden)

    Xiaohui Yang

    2018-06-01

    Full Text Available Late blight caused by the oomycete fungus Phytophthora infestans (Pi is the most serious obstacle to potato (Solanum tuberosum production in the world. A super race isolate, CN152, which was identified from Sichuan Province, China, could overcome nearly all known late blight resistance genes and caused serious damage in China. The potato genotype SD20 was verified to be highly resistant to CN152; however, the molecular regulation network underlying late blight resistance pathway remains unclear in SD20. Here, we performed a time-course experiment to systematically profile the late blight resistance response genes using RNA-sequencing in SD20. We identified 3354 differentially expressed genes (DEGs, which mainly encoded transcription factors and protein kinases, and also included four NBS-LRR genes. The late blight responsive genes showed time-point-specific induction/repression. Multi-signaling pathways of salicylic acid, jasmonic acid, and ethylene signaling pathways involved in resistance and defense against Pi in SD20. Gene Ontology and KEGG analyses indicated that the DEGs were significantly enriched in metabolic process, protein serine/threonine kinase activity, and biosynthesis of secondary metabolites. Forty-three DEGs were involved in immune response, of which 19 were enriched in hypersensitive response reaction, which could play an important role in broad-spectrum resistance to Pi infection. Experimental verification confirmed the induced expression of the responsive genes in the late blight resistance signaling pathway, such as WRKY, ERF, MAPK, and NBS-LRR family genes. Our results provided valuable information for understanding late blight resistance mechanism of potato.

  11. Inversion for Eigenvalues and Modes Using Sierra-SD and ROL.

    Energy Technology Data Exchange (ETDEWEB)

    Walsh, Timothy [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Aquino, Wilkins [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Ridzal, Denis [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Kouri, Drew Philip [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2015-12-01

    In this report we formulate eigenvalue-based methods for model calibration using a PDE-constrained optimization framework. We derive the abstract optimization operators from first principles and implement these methods using Sierra-SD and the Rapid Optimization Library (ROL). To demon- strate this approach, we use experimental measurements and an inverse solution to compute the joint and elastic foam properties of a low-fidelity unit (LFU) model.

  12. Semi-automatic geographic atrophy segmentation for SD-OCT images

    OpenAIRE

    Chen, Qiang; de Sisternes, Luis; Leng, Theodore; Zheng, Luoluo; Kutzscher, Lauren; Rubin, Daniel L.

    2013-01-01

    Geographic atrophy (GA) is a condition that is associated with retinal thinning and loss of the retinal pigment epithelium (RPE) layer. It appears in advanced stages of non-exudative age-related macular degeneration (AMD) and can lead to vision loss. We present a semi-automated GA segmentation algorithm for spectral-domain optical coherence tomography (SD-OCT) images. The method first identifies and segments a surface between the RPE and the choroid to generate retinal projection images in wh...

  13. The threshold anomaly in the interaction of s-d shell nuclei

    International Nuclear Information System (INIS)

    Bilwes, B.

    1990-01-01

    The energy dependence of the potential near the Coulomb barrier is studied by precise measurements of elastic scattering and quasi elastic reactions between s-d shell nuclei. The analyses with semi-microscopic (M3Y-folding model) and microscopic (closure approximation model) potentials allow us to demonstrate the generality of the threshold anomaly and the ability of these models to well reproduce the experimental data

  14. PERAN ORANG TUA TERADAP PRESTASI BELAJAR SISWA SD AL-FURQAN JEMBER

    Directory of Open Access Journals (Sweden)

    Sofyan Rofi

    2016-04-01

    Full Text Available Objective of the study : (1 to know how far parents’ role student learning achievement at Al-furqan Jember, (2 how to correlation between parent of student and school at SD Al-Furqan Jember. This study was done at SD Al-Furqan Jember, by using qualitative approach. Data collecting technique was done by : (1 deep interview, (2 documentation. While checking up data validity was done by cross check with triangulation technique and colleagues discussion. Data analysis was done by (1 data reduction, (2 data presentation, (3 withdrawal of conclusion. From data analysis was found that parent has so central to student learning achievement, because education in school is still not enough increase student learning achievement. With the parents’ role so not just teacher wo strive to increase student learning achievement however parent does advising to their child by join the course. While relation between student old fellow with school intertwin intensive communications with meeting of pupil sponsor mothers in majelis ta’lim that conducted by institution of Al-Furqan Jember. From all data and the result of research finding is found that parents’ role is so necessary to student learning achievement of SD Al-Furqan Jember and relation among student old fellow with school is very good and communicative. As for researcher suggestion is school have to be more improve role of old fellow to student learning process, in order to student achievement progressively mount.       Key word : Parent, learning achievement

  15. IMPLEMENTASI KEPEMIMPINAN TRANSFORMASIONAL KEPALA SEKOLAH DALAM MENINGKATKAN MUTU SEKOLAH DI SD KANISIUS SENGKAN KABUPATEN SLEMAN

    Directory of Open Access Journals (Sweden)

    Tukiman Tukiman

    2014-10-01

    Full Text Available Penelitian ini bertujuan untuk mengungkapkan implementasi kepemimpinan transformasional kepala sekolah dalam meningkatkan mutu sekolah SD Kanisius Sengkan, Kabupaten Sleman. Penelitian ini merupakan penelitian kualitatif dengan jenis penelitian studi kasus. Pengumpulan data menggunakan metode kajian dokumen, observasi, dan wawancara. Analisis data menggunakan analisis model interaktif dari Miles dan Huberman yang meliputi empat tahap analisis yaitu: pengumpulan data, reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa kepemimpinan transformasional kepala sekolah SD Kanisius Sengkan mampu menciptakan perubahan dan membawa SD Kanisius mencapai prestasi yang baik. Kepala sekolah menjadi tokoh panutan yang dihormati, dihargai, dan dipercaya. Kepala sekolah mampu membangun semangat kebersamaan dan kedisiplinan serta memotivasi para guru dan karyawan untuk bekerja secara optimal. Kepala sekolah berani melakukan perubahan melalui tindakan-tindakan yang kreatif dan inovatif. Akhirnya kepala sekolah mampu membangun kesadaran berorganisasi pada para guru dan karyawan dengan mengembangkan sikap rasa memiliki dan rasa bertanggung jawab untuk meraih prestasi setinggi-tingginya.Kata kunci: kepala sekolah, kepemimpian transformasional, mutu sekolah.

  16. Importance of prumycin produced by Bacillus amyloliquefaciens SD-32 in biocontrol against cucumber powdery mildew disease.

    Science.gov (United States)

    Tanaka, Keijitsu; Fukuda, Mutsumi; Amaki, Yusuke; Sakaguchi, Takatoshi; Inai, Koji; Ishihara, Atsushi; Nakajima, Hiromitsu

    2017-12-01

    Powdery mildew disease of cucurbits is caused mainly by Podosphaera fusca, which is one of the most important limiting factors in cucurbit production worldwide. Previously we reported that Bacillus amyloliquefaciens biocontrol strain SD-32 produces C 17 bacillomycin D and [Ile 2002]surfactin, and that these metabolites play important roles in SD-32's biocontrol over cucumber gray mold disease. Our further investigation demonstrated that the culture broth and its supernatant suppressed cucumber powdery mildew disease in greenhouse experiments. However, the active principle(s) remained unknown. The active compound was isolated from the culture supernatant after anti-powdery mildew disease activity-guided purification and identified as prumycin. Prumycin significantly suppressed the disease, whereas bacillomycin D and [Ile 2002]surfactin did not. Prumycin did not induce the expression of plant defense genes (PR1a and VSP1), suggesting that it does not act via plant defense response. Light microscopic observations of prumycin-treated cucumber cotyledon suggested that prumycin inhibits the conidial germination of P. fusca. This study demonstrates that prumycin is a major factor in SD-32's suppression of cucumber powdery mildew disease. Our findings shed light for the first time on prumycin's role in biocontrol by Bacillus against this disease. © 2017 Society of Chemical Industry. © 2017 Society of Chemical Industry.

  17. The Traffic Signal Acquisition System Based on GPS and SD Card Storage

    Directory of Open Access Journals (Sweden)

    LIU Chang-yuan

    2017-06-01

    Full Text Available In terms of the issues where traffic lights’ positions and traffic status information cannot be managed automatically,in this system,STC12C5A60S2 microcontroller can be used as the master chip in conjunction with the GPS position module,Neo-5Q. The wireless transceiver module,PT2262 /2272 and the portable installing SD card are used to design a new type of real-time information acquisition solution for positions of traffic lights and signal status. And the system can determine the traffic lights’ positions and the process of lighting in a real time. Then the data will be stored in SD card by the SD card module. Furthermore,the equipment can be implemented on existing facilities with a simple circuit. According to the result of experiments,the system contains a convenient storage,works in a real time and it is also advisable to help with the data reading and analysis. Thus, implementation of the system is of great significance to acquire and analyze the traffic status information in recent times.

  18. Multimodal segmentation of optic disc and cup from stereo fundus and SD-OCT images

    Science.gov (United States)

    Miri, Mohammad Saleh; Lee, Kyungmoo; Niemeijer, Meindert; Abràmoff, Michael D.; Kwon, Young H.; Garvin, Mona K.

    2013-03-01

    Glaucoma is one of the major causes of blindness worldwide. One important structural parameter for the diagnosis and management of glaucoma is the cup-to-disc ratio (CDR), which tends to become larger as glaucoma progresses. While approaches exist for segmenting the optic disc and cup within fundus photographs, and more recently, within spectral-domain optical coherence tomography (SD-OCT) volumes, no approaches have been reported for the simultaneous segmentation of these structures within both modalities combined. In this work, a multimodal pixel-classification approach for the segmentation of the optic disc and cup within fundus photographs and SD-OCT volumes is presented. In particular, after segmentation of other important structures (such as the retinal layers and retinal blood vessels) and fundus-to-SD-OCT image registration, features are extracted from both modalities and a k-nearest-neighbor classification approach is used to classify each pixel as cup, rim, or background. The approach is evaluated on 70 multimodal image pairs from 35 subjects in a leave-10%-out fashion (by subject). A significant improvement in classification accuracy is obtained using the multimodal approach over that obtained from the corresponding unimodal approach (97.8% versus 95.2%; p < 0:05; paired t-test).

  19. PENTINGNYA PENDIDIKAN ANTI KEKERASAN BAGI ANAK SD DALAM MEWUJUDKAN WARGA NEGARA YANG BAIK

    Directory of Open Access Journals (Sweden)

    Sigit dk

    2010-01-01

    Full Text Available Kekerasan  yang terjadi di Indonesia dari hari ke sehari angkanya semakin meningkat, kekerasan itu terjadi terhadap perempuan, anak-anak,  dan kekerasan  biasanya  lebih  banyak dalam rumah tangga (KDRT. Data yang dilansir Komnas Perempuan paska diundangkan UU-PKDRT tahun 2004 menunjukkan angka yang sangat memprihatinkan. Oleh karena itu masalah  kekerasan terhadap istri (KTI  tahun 2004 mencapai 1.782 kasus, sedang tahun 2005 terdapat 4.889 kasus, dan tahun 2007  mencapai 17.772 kasus  dan angka tersebut cenderung meningkat (Kedaulatan Rakyat 29 Nov. 2008; 1. Dalam peringatan 16 hari anti kekerasan terhadap perempuan yang dimulai tanggal 25 November 2008 sampai dengan 10 Desember 2008, hari AIDS 1 Desember dan hari Hak Azasi Manusia (HAM  jatuh  pada tanggal 10 Desember masih terdapat kekerasan masif,  dan agaknya bangsa ini perlu meratifikasi kembali pelbagai kekerasan yang terjadi di Indonesia. Kekerasan virtual juga disuguhkan di layar TV melalui film anak-anak seperti Naruto, Avatar dan media elektronika melalui komputer, geme onliene dan tersosialisasi pada anak-anak SD (Sekolah Dasar.  Akibatnya anak-anak SD akrab dengan kekerasan dan mengimplementasikan dalam bentuk perilaku yang distruktif. Melalui Pendidikan anti kekerasan diharapkan dapat memberikan secercah harapan agar generasi muda khususnya anak SD menjadi warga negara yang baik, cinta damai mengasihi sesama mengabdikan diri pada anti kekerasan.   Kata Kunci: Pendididikan, Kekerasan, Sekolah Dasar.

  20. PENGGUNAAN MEDIA ILUSTRASI POP-UP SEJARAH DALAM PEMBELAJARAN IPS DI SD NEGERI BATURSARI

    Directory of Open Access Journals (Sweden)

    Yulita Dewi Purmintasari

    2017-06-01

    Full Text Available This study aims: (1to know the process of learning social science in SD Negeri Batursari, (2 to know the use of illustration pop-up media in relieve the teacher to foster student‟s understanding toward the social science subject. This study was conducted in SD Negeri Batursari by using qualitative research strategies. The technique in collecting data were interview, direct observation, questionnaires and research document. The data validated by using triangulation researcher, theoretical and methodological. The technique using data collection, data reduction, and data presentation and conclusion/ verification. The result showed that fourth and rade students SD Negeri Batursari very anthusiastic in participating learning social science, students were formed into small groups and students talk to each other discussing visula messages in pop-up media. Illustration pop-up media is very helpful the teacher inleraning social science, it can be seen when students most easily to understand the material by looking at the illustration in the material. The syudents helped with the media as if the were in the illustration. Keywords: Pop-Up Media, Social Science Learning

  1. Penerapan Model Pembelajaran TPS Untuk Meningkatkan Hasil Belajar IPA Siswa Kelas V SD No 1 Mengwitani

    Directory of Open Access Journals (Sweden)

    I W Daniel Winantara

    2017-05-01

    Full Text Available Tujuan penelitian ini untuk mengetahui peningkatan hasil belajar IPA siswa kelas V SD No. 1 Mengwitani setelah diterapkannya model pembelajaran think pair share (TPS. Penelitian ini adalah penelitian tindakan kelas yang dilakukan dalam dua siklus. Subjek dalam penelitian ini adalah siswa kelas V yang berjumlah 32 orang. Data penelitian ini tentang hasil belajar yang dikumpulkan dengan menggunakan metode tes. Data dianalisis dengan menggunakan statistik kuantitatif. Hasil penelitian menunjukkan adanya peningkatan terhadap hasil belajar IPA siswa kelas V SD No. 1 Mengwitani. Hal ini ditunjukkan dengan hasil penelitian yang diperoleh yaitu persentase rata-rata hasil belajar pada siklus I sebesar 75,31% yang berada pada kategori sedang dan pada siklus II menjadi 80,15% yang berada pada kategori tinggi. Dengan ketuntasan belajar siswa pada siklus I sebesar 65,62% dan pada siklus II mencapai 87,5%. Berdasarkan hasil penelitian tersebut dapat disimpulkan penerapan model pembelajaran think pair share dapat meningkatkan hasil belajar IPA siswa kelas V SD No. 1 Mengwitani.

  2. Ultra-Widefield Steering-Based SD-OCT Imaging of the Retinal Periphery

    Science.gov (United States)

    Choudhry, Netan; Golding, John; Manry, Matthew W.; Rao, Rajesh C.

    2016-01-01

    Objective To describe the spectral-domain optical coherence tomography (SD-OCT) features of peripheral retinal findings using an ultra-widefield (UWF) steering technique to image the retinal periphery. Design Observational study. Participants 68 patients (68 eyes) with 19 peripheral retinal features. Main Outcome Measures SD-OCT-based structural features. Methods Nineteen peripheral retinal features including: vortex vein, congenital hypertrophy of the retinal pigment epithelium (CHRPE), pars plana, ora serrata pearl, typical cystoid degeneration (TCD), cystic retinal tuft, meridional fold, lattice and cobblestone degeneration, retinal hole, retinal tear, rhegmatogenous retinal detachment (RRD), typical degenerative senile retinoschisis, peripheral laser coagulation scars, ora tooth, cryopexy scars (retinal tear and treated retinoblastoma scar), bone spicules, white without pressure, and peripheral drusen were identified by peripheral clinical examination. Near infrared (NIR) scanning laser ophthalmoscopy (SLO) images and SD-OCT of these entities were registered to UWF color photographs. Results SD-OCT resolved structural features of all peripheral findings. Dilated hyporeflective tubular structures within the choroid were observed in the vortex vein. Loss of retinal lamination, neural retinal attenuation, RPE loss or hypertrophy were seen in several entities including CHRPE, ora serrata pearl, TCD, cystic retinal tuft, meridional fold, lattice and cobblestone degenerations. Hyporeflective intraretinal spaces, indicating cystoid or schitic fluid, were seen in ora serrata pearl, ora tooth, TCD, cystic retinal tuft, meridional fold, retinal hole, and typical degenerative senile retinoschisis. The vitreoretinal interface, which often consisted of lamellae-like structures of the condensed cortical vitreous near or adherent to the neural retina, appeared clearly in most peripheral findings, confirming its association with many low-risk and vision-threatening pathologies

  3. SD-EAR: Energy Aware Routing in Software Defined Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Anuradha Banerjee

    2018-06-01

    Full Text Available In today’s internet-of-things (IoT environment, wireless sensor networks (WSNs have many advantages, with broad applications in different areas including environmental monitoring, maintaining security, etc. However, high energy depletion may lead to node failures in WSNs. In most WSNs, nodes deplete energy mainly because of the flooding and broadcasting of route-request (RREQ packets, which is essential for route discovery in WSNs. The present article models wireless sensor networks as software-defined wireless sensor networks (SD-WSNs where the network is divided into multiple clusters or zones, and each zone is controlled by a software-defined network (SDN controller. The SDN controller is aware of the topology of each zone, and finds out the optimum energy efficient path from any source to any destination inside the zone. For destinations outside of the zone, the SDN controller of the source zone instructs the source to send a message to all of the peripheral nodes in that zone, so that they can forward the message to the peripheral nodes in other zones, and the process goes on until a destination is found. As far as energy-efficient path selection is concerned, the SDN controller of a zone is aware of the connectivity and residual energy of each node. Therefore, it is capable of discovering an optimum energy efficient path from any source to any destination inside as well as outside of the zone of the source. Accordingly, flow tables in different routers are updated dynamically. The task of route discovery is shifted from individual nodes to controllers, and as a result, the flooding of route-requests is completely eliminated. Software-defined energy aware routing (SD-EARalso proposes an innovative sleeping strategy where exhausted nodes are allowed to go to sleep through a sleep request—sleep grant mechanism. All of these result in huge energy savings in SD-WSN, as shown in the simulation results.

  4. Color suppressed contributions to the decay modes B{sub d,s}{yields}D{sub s,d}D{sub s,d}, B{sub d,s}{yields}D{sub s,d}D{sup *}{sub s,d}, and B{sub d,s}{yields}D{sup *}{sub s,d} D{sup *}{sub s,d}

    Energy Technology Data Exchange (ETDEWEB)

    Eeg, J.O. [University of Oslo, Department of Physics, Blindern, Oslo (Norway); Fajfer, S. [University of Ljubljana, Department of Physics, Ljubljana (Slovenia); J. Stefan Institute, Ljubljana (Slovenia); Prapotnik, A. [J. Stefan Institute, Ljubljana (Slovenia)

    2005-07-01

    The amplitudes for decays of the type B{sub d,s}{yields}D{sub s,d}D{sub s,d}, have no factorizable contributions, while B{sub d,s}{yields}D{sub s,d}D{sup *}{sub s,d}, and B{sub d,s}{yields}D{sup *}{sub s,d}D{sup *}{sub s,d} have relatively small factorizable contributions through the annihilation mechanism. The dominant contributions to the decay amplitudes arise from chiral loop contributions and tree level amplitudes which can be obtained in terms of soft gluon emissions forming a gluon condensate. We predict that the branching ratios for the processes anti B{sup 0}{sub d}{yields}D{sub s}{sup +}D{sub s}{sup -}, anti B{sup 0}{sub d}{yields}D{sub s}{sup +*} D{sub s}{sup -} and anti B{sup 0}{sub d}{yields}D{sub s}{sup +}D{sub s}{sup -*} are all of order (2-3) x 10{sup -4}, while anti B{sup 0}{sub s}{yields}D{sub d}{sup +}D{sub d}{sup -}, anti B{sup 0}{sub s}{yields}D{sub d}{sup +*}D{sub d}{sup -} and anti B{sup 0}{sub s}{yields}D{sub d}{sup +}D{sub d}{sup -*} are of order (4-7) x 10{sup -3}. We obtain branching ratios for two D{sup *}'s in the final state of order two times bigger. (orig.)

  5. The NFI TOKAI SD System - management of the capabilities of operators in fuel fabrication plants

    International Nuclear Information System (INIS)

    Fukushima, T.

    2008-01-01

    Since the JCO criticality accident occurred in 1999, even more emphasis has been placed on the management of nuclear safety in Japan. This is particularly true for the education of operators and the observance of operational procedures. Even prior to this accident, Nuclear Fuel Industries, Ltd., NFI, regarded the education and development of skilled operators very seriously and we have developed an education system, called the SD system (Skill Development system), to assure the careful education of the operators and the improvement of their skill in order to prevent human error events. Our education system in the Tokai works, is explained. (author)

  6. KEEFEKTIFAN BUDAYA LITERASI DI SD N 3 BANJAR JAWA UNTUK MENINGKATKAN MINAT BACA

    Directory of Open Access Journals (Sweden)

    I Putu Mas Dewantara

    2017-12-01

    Full Text Available Penelitian ini bertujuan untuk mengetahui sejauh mana keefektifan budaya literasi di SD N 3 Banjar Jawa untuk meningkatkan minat baca siswa. Metode atau teknik pengumpulan data yang digunakan dalam penelitian ini meliputi: wawancara, observasi, angket, dan kuisioner. Teknik analisis data yang digunakan dalam penelitian ini adalah model Miles dan Huberman, yaitu: reduksi, sajian data, dan penarikan simpulan. Dari hasil penelitian terjadi peningkatan minat baca siswa sebesar 27%. Program budaya literasi ini dikemas dengan kegiatan 15 menit membaca sebelum jam pelajaran, melaksanakan sabtu literasi, menata perpustakaan, dan menciptakan lingkungan yang kaya teks.

  7. Nitrogen Source Stabilization of Quorum Sensing in the Pseudomonas aeruginosa Bioaugmentation Strain SD-1.

    Science.gov (United States)

    Wang, Mei-Zhen; Lai, Bai-Min; Dandekar, Ajai A; Yang, Yu-Sheng; Li, Na; Yin, Jun; Shen, Dong-Sheng

    2017-08-15

    Pseudomonas aeruginosa SD-1 is efficient at degrading aromatic compounds and can therefore contribute to the bioremediation of wastewater. P. aeruginosa uses quorum sensing (QS) to regulate the production of numerous secreted "public goods." In wastewater bioaugmentation applications, there are myriad nitrogen sources, and we queried whether various nitrogen sources impact the stabilities of both QS and the bacterial populations. In a laboratory strain of P. aeruginosa , PAO1, the absence of a nitrogen source has been shown to destabilize these populations through the emergence of QS mutant "cheaters." We tested the ability of SD-1 to grow in casein broth, a condition that requires QS for growth, when the nitrogen source with either NH 4 Cl, NaNO 3 , or NaNO 2 or with no added nitrogen source. There was great variability in susceptibility to invasion by QS mutant cheaters and, by extension, the stability of the SD-1 population. When grown with NH 4 Cl as an extra nitrogen source, no population collapse was observed; by contrast, two-thirds of cultures grown in the presence of NaNO 2 collapsed. In the populations that collapsed, the frequency of social cheaters exceeded 40%. NaNO 3 and NaNO 2 directly favor QS mutants of P. aeruginosa SD-1. Although the mechanism by which these nitrogen sources act is not clear, these data indicate that the metabolism of nitrogen can affect the stability of bacterial populations, an important observation for continuing industrial applications with this species. IMPORTANCE Bioaugmentation as a method to help remediate wastewater pollutant streams holds significant potential to enhance traditional methods of treatment. Addition of microbes that can catabolize organic pollutants can be an effective method to remove several toxic compounds. Such bioaugmented strains of bacteria have been shown to be susceptible to competition from the microbiota that are present in wastewater streams, limiting their potential effectiveness. Here, we

  8. Parity dependence in the optical potential of sd-shell nuclei

    International Nuclear Information System (INIS)

    Ferrero, J.L.; Ruiz, J.A.; Bilwes, B.; Bilwes, R.

    1989-01-01

    Elastic scattering between sd-shell nuclei differing by one, two, three and four nucleons has been measured. The oscillating pattern of the angular distributions, when it is observed, is attributed to the interference between direct elastic scattering and elastic transfer. Explicit DWBA treatment of the elastic transfer or parity dependent real potential analysis allow both a good reproduction of the data. The sign and the importance of the parity potential deduced by fitting the data are in good agreement with the predictions of microscopic calculations in the two centre shell-model

  9. Test of the fermion dynamical symmetry model microscopy in the sd shell

    International Nuclear Information System (INIS)

    Halse, P.

    1987-01-01

    The recently formulated fermion dynamical symmetry model treats low-lying collective levels as states classified in a pseudo-orbit pseudo-spin (k-i) basis having either k = 1 and zero i seniority, or i = (3/2) and zero k seniority. The validity of this suggestion, which has not previously been subjected to a microscopic examination, is determined for even-even nuclei in the sd shell, for which the model is phenomenologically successful, by comparing these states with the eigenfunctions of a realistic Hamiltonian. Most low-lying levels are almost orthogonal to the fermion dynamical symmetry model zero seniority subspaces

  10. Holter con memorias SD y sistema experto de evaluación cardíaca

    OpenAIRE

    Pfarher, Iván; Reula, Germán; Tovorosky, Pablo; Zanin, Miguel; Caballero, Raúl M.; Maggiolo, Gustavo Daniel

    2006-01-01

    Este desarrollo se enmarca dentro de las actividades de la cátedra de Técnicas Digitales de Ingeniería en Electrónica en UTN-FRP y tiene como objeto potenciar la capacidad de diseño de los alumnos. En este caso se ha desarrollado un sistema holter utilizando memorias SD comunes en el mercado de las cámaras fotográficas implementando además un sistema ordenador de control a partir del uso de un microcontrolador con el sistema de operación y de captura embebido correspondiente para la captura, ...

  11. Development of safety function assessment trees for pressurized heavy water reactor LP/SD operations

    International Nuclear Information System (INIS)

    Yang, Hui Chang; Chung, Chang Hyun; Kim, Ki Yong; Jee, Moon Hak; Sung, Chang Kyoung

    2003-01-01

    The objective of Configuration Risk Management Program(CRMP) is to maintain the safety level by assuring the defense-in-depth of nuclear power plant while the configurations are changed during plant operations, especially for the LP/SD. Such a safety purpose can be achieved by establishing the risk monitoring programs with both quantitative and qualitative features. Generally, the quantitative risk evaluation models, i.e., PRA models are used for the risk evaluation during full power operation, and the qualitative risk evaluation models such as safety function assessment trees are used. Through this study, safety function assessment trees were developed

  12. Modification of Iraqi Asphalt 40/50 Properties Using Saw Dust (SD and Natural Rubber Latex

    Directory of Open Access Journals (Sweden)

    Rusul l M. Darwesh

    2018-04-01

    Full Text Available The aim of this research is to enhance the fundamental properties for asphalt binder as those spec-ifications relate to performance of asphalt mixtures. In this paper studied the effect of add (2, 4 % SD in different sizes and (3, 5 and 7% Natural rubber latex to the straight asphalt 40/50 produced from Al-Dura refinery at 160C, it was added each additive separately and then added together to asphalt in same temperature, then tested physically and mechanically according to the American Society for Testing and Materials (ASTM, the result showed largely improvement.

  13. PENGEMBANGAN SSP TEMATIK INTEGRATIF UNTUK MEMBANGUN KARAKTER KEJUJURAN DAN KEPEDULIAN SISWA SD KELAS II

    Directory of Open Access Journals (Sweden)

    Sri Hariyati Qodriyah

    2015-07-01

    Full Text Available Penelitian ini bertujuan untuk menghasilkan perangkat pembelajaran berupa SSP Tematik yang dapat mengembangkan karakter siswa kelas 2 sekolah dasar, meliputi karakter kejujuran dan kepedulian. Penelitian ini merupakan penelitian dan pengembangan yang terdiri dari tujuh tahap, yaitu studi pendahuluan, perencanaan, mengembangkan produk awal, uji coba awal, revisi produk utama, uji coba lapangan, dan revisi terhadap produk operasional. SSP yang dikembangkan dievaluasi oleh seorang ahli materi dan media untuk mengetahui validitasnya. Subjek uji coba berjumlah 90 siswa terdiri dari 23 siswa SD Sonosewu, Kasihan, Bantul, DIY sebagai subjek uji coba terbatas dan 33 siswa untuk kelas control dan 34 siswa untuk kelas eksperimen SD 1 Kadipiro, Kasihan, Bantul, DIY. Hasil penelitian ini berupa SSP yang meliputi: silabus, RPP, LKS, dan lembar penilaian. Hasil evaluasi dari ahli materi dan ahli media untuk menguji tingkat kevalidan SSP menyatakan bahwa SSP yang dikembangkan adalah valid dan berkategori “baik”. Hasil uji coba menunjukkan bahwa SSP yang dikembangkan dinyatakan layak serta memenuhi kriteria praktis dan efektif dalam mengembangkan karakter siswa. Pembelajaran dengan SSP yang dikembangkan mampu mengembangkan karakter kejujuran dan kepedulian. Kata Kunci: SSP, karakter jujur dan peduli   DEVELOPING THEMATIC INTEGRATIVE SSP FOR BUILDING THE CHARACTERS OF HONESTY AND CARE GRADE II STUDENT OF ELEMENTARY SCHOOL Abstract This study aims to produce integrated learning sets in the form of thematic SSP that can develop the characters of honesty and care of grade II students of elementary school. This was a research and development study consisting of seven steps, i.e. preliminary study, planning, preliminary product development, preliminary tryout, main product revision, field tryout, revision of operational product, operational product revision, and revision of the final product. The developed SSP was evaluated by a science subject expert to assess

  14. Testing refined shell-model interactions in the sd shell: Coulomb excitation of Na26

    CERN Document Server

    Siebeck, B; Blazhev, A; Reiter, P; Altenkirch, R; Bauer, C; Butler, P A; De Witte, H; Elseviers, J; Gaffney, L P; Hess, H; Huyse, M; Kröll, T; Lutter, R; Pakarinen, J; Pietralla, N; Radeck, F; Scheck, M; Schneiders, D; Sotty, C; Van Duppen, P; Vermeulen, M; Voulot, D; Warr, N; Wenander, F

    2015-01-01

    Background: Shell-model calculations crucially depend on the residual interaction used to approximate the nucleon-nucleon interaction. Recent improvements to the empirical universal sd interaction (USD) describing nuclei within the sd shell yielded two new interactions—USDA and USDB—causing changes in the theoretical description of these nuclei. Purpose: Transition matrix elements between excited states provide an excellent probe to examine the underlying shell structure. These observables provide a stringent test for the newly derived interactions. The nucleus Na26 with 7 valence neutrons and 3 valence protons outside the doubly-magic 16O core is used as a test case. Method: A radioactive beam experiment with Na26 (T1/2=1,07s) was performed at the REX-ISOLDE facility (CERN) using Coulomb excitation at safe energies below the Coulomb barrier. Scattered particles were detected with an annular Si detector in coincidence with γ rays observed by the segmented MINIBALL array. Coulomb excitation cross sections...

  15. Anisotropic SD2 brane: accelerating cosmology and Kasner-like space-time from compactification

    Energy Technology Data Exchange (ETDEWEB)

    Nayek, Kuntal; Roy, Shibaji [Saha Institute of Nuclear Physics, Calcutta (India); Homi Bhabha National Institute, Mumbai (India)

    2017-07-15

    Starting from an anisotropic (in all directions including the time direction of the brane) non-SUSY D2 brane solution of type IIA string theory we construct an anisotropic space-like D2 brane (or SD2 brane, for short) solution by the standard trick of a double Wick rotation. This solution is characterized by five independent parameters. We show that compactification on six-dimensional hyperbolic space (H{sub 6}) of a time-dependent volume of this SD2 brane solution leads to accelerating cosmologies (for some time t ∝ t{sub 0}, with t{sub 0} some characteristic time) where both the expansions and the accelerations are different in three spatial directions of the resultant four-dimensional universe. On the other hand at early times (t << t{sub 0}) this four-dimensional space, in certain situations, leads to four-dimensional Kasner-like cosmology, with two additional scalars, namely, the dilaton and a volume scalar of H{sub 6}. Unlike in the standard four-dimensional Kasner cosmology here all three Kasner exponents could be positive definite, leading to expansions in all three directions. (orig.)

  16. A framework for classification and segmentation of branch retinal artery occlusion in SD-OCT

    Science.gov (United States)

    Guo, Jingyun; Shi, Fei; Zhu, Weifang; Chen, Haoyu; Chen, Xinjian

    2016-03-01

    Branch retinal artery occlusion (BRAO) is an ocular emergency which could lead to blindness. Quantitative analysis of BRAO region in the retina is very needed to assessment of the severity of retinal ischemia. In this paper, a fully automatic framework was proposed to classify and segment BRAO based on 3D spectral-domain optical coherence tomography (SD-OCT) images. To the best of our knowledge, this is the first automatic 3D BRAO segmentation framework. First, a support vector machine (SVM) based classifier is designed to differentiate BRAO into acute phase and chronic phase, and the two types are segmented separately. To segment BRAO in chronic phase, a threshold-based method is proposed based on the thickness of inner retina. While for segmenting BRAO in acute phase, a two-step segmentation is performed, which includes the bayesian posterior probability based initialization and the graph-search-graph-cut based segmentation. The proposed method was tested on SD-OCT images of 23 patients (12 of acute and 11 of chronic phase) using leave-one-out strategy. The overall classification accuracy of SVM classifier was 87.0%, and the TPVF and FPVF for acute phase were 91.1%, 5.5%; for chronic phase were 90.5%, 8.7%, respectively.

  17. Geology of the USW SD-9 drill hole, Yucca Mountain, Nevada

    International Nuclear Information System (INIS)

    Engstrom, D.A.; Rautman, C.A.

    1996-10-01

    Drill hole USW SD-9 is one of several holes drilled under Site Characterization Plan Study as part of the characterization program at Yucca Mountain, Nevada, which has been proposed as the potential location of a repository for high-level nuclear waste. The SD-9 drill hole is located in the northern part of the potential repository area. Quantitative and semiquantitative data are included in this report for cover recovery, rock-quality designation (RQD), lithophysal cavity abundance, and fracturing. These data are spatially variable, both within and among the major formational-level stratigraphic units. Nonwelded intervals in general exhibit higher recoveries and more intact (higher) RQD values than welded intervals. The most intact, highest-RQD materials encountered within the Topopah Spring belong to the lower 33.3 ft of the middle nonlithophysal zone. This report includes quantitative data for the framework material properties of porosity, bulk and particle density, and saturated hydraulic conductivity. Graphical analysis of variations in these laboratory hydrologic properties indicates first-order control of material properties by the degree of welding and the presence of zeolite minerals. Many major lithostratigraphic contacts are not well expressed in the material-property profiles; contacts of material-property units are related more to changes in the intensity of welding. Approximate in-situ saturation data of samples preserved immediately upon recovery from the hole are included in the data tabulation

  18. EFEKTIVITAS PENGEMBANGAN MEDIA PERMAINAN ULAR TANGGA SEBAGAI SARANA BELAJAR TEMATIK SD

    Directory of Open Access Journals (Sweden)

    Moch. Chabib

    2017-07-01

    Full Text Available Playing by learning is a way of learning that appropriate with the characteristics of elementary school children today. Which (1 Start of critical thinking. (2 Start emerging competition between friends. (3 Having a deep curiosity. (4 Love asked and (5 Likes groups. This is supported by the results of the field observations showed that when the class is still a lot of students were busy playing and tend to be passive, when the teacher was giving a lesson. Traditional game of snakes and ladders is familiar with elementary school children. Therefore we need a through study on how to take advantage of this game help the studen learning, so it is can solve the problem of declining motivation and involvement of the student in the classroom. Bermain sambil belajar merupakan sebuah pendekatan pembelajaran yang sangat sesuai dengan karakteristik belajar anak SD saat ini, yaitu (1 mulai berpikir kritis, (2 mulai muncul persaingan antar teman, (3 mempunyai rasa ingin tahu yang mendalam, (4 suka bertanya, dan (5 suka berkelompok. Hal ini didukung dengan hasil pengamatan di lapangan yang menunjukkan bahwa ketika dikelas masih banyak siswa yang asyik bermain dan cenderung pasif, padahal guru sedang memberikan penjelasan.Permainan ular tangga merupakan permainan tradisional yang sudah akrab dengan anak SD. Oleh karena itu, diperlukan sebuah kajian yang mendalam tentang bagaimana cara memanfaatkan permainan ini dalam pembelajaran sehingga dapat mengatasi masalah tentang menurunnya motivasi dan keaktifan siswa di kelas.

  19. Anisotropic SD2 brane: accelerating cosmology and Kasner-like space-time from compactification

    International Nuclear Information System (INIS)

    Nayek, Kuntal; Roy, Shibaji

    2017-01-01

    Starting from an anisotropic (in all directions including the time direction of the brane) non-SUSY D2 brane solution of type IIA string theory we construct an anisotropic space-like D2 brane (or SD2 brane, for short) solution by the standard trick of a double Wick rotation. This solution is characterized by five independent parameters. We show that compactification on six-dimensional hyperbolic space (H_6) of a time-dependent volume of this SD2 brane solution leads to accelerating cosmologies (for some time t ∝ t_0, with t_0 some characteristic time) where both the expansions and the accelerations are different in three spatial directions of the resultant four-dimensional universe. On the other hand at early times (t << t_0) this four-dimensional space, in certain situations, leads to four-dimensional Kasner-like cosmology, with two additional scalars, namely, the dilaton and a volume scalar of H_6. Unlike in the standard four-dimensional Kasner cosmology here all three Kasner exponents could be positive definite, leading to expansions in all three directions. (orig.)

  20. IMPLEMENTASI MODEL PEMBELAJARAN TWO STAY TWO STRAY DALAM PEMBELAJARAN BERBASIS KEMAMPUAN BERPIKIR KRITIS KELAS V SD

    Directory of Open Access Journals (Sweden)

    M. Yusuf Setia Wardana

    2017-04-01

    Full Text Available Benefits of mathematics are to equip students with the ability to think logically, analytical, systematically, critically, and creatively, as well as the ability to cooperate. Based on observations in elementary school, there are 40% of students have not reached KKM and students have lack of critical abilities to understand math problems, and they have low activity of the study. One of models that can be applied is Two Stay Two Stray. The study used True Experimental Design with Posttest-Only Control Design. The population in this study was all fifth grade students of SD Negeri Semarang Rejosari 03. Data of critical thinking skills of the students in average on test of critical thinking skills mastery was 3.31 ≥ 2.67, it can be said to have a complete description. The conclusion is a model of Two Stay Two Stray being effective for critical thinking skills and mathematics learning outcomes of fifth grade students in SD Negeri Rejosari 03 Semarang. Keywords: two stay two stray model, critical thinking ability.

  1. Mechanical Properties Variation of B500SD High Ductility Reinforcement Regarding its Corrosion Degree

    Directory of Open Access Journals (Sweden)

    Cobo, A.

    2011-12-01

    Full Text Available Corrosion effects on reinforcement become evident in the bar section reduction and in the variation of mechanical properties related to ductility. In this research work, 96 B500SD steel bars, previously subjected to different corrosion variables, have been tested. Results show that the elongation of the bars diminishes and the ratio between the maximum tensile stress and the elastic limit increases as the corrosion degree advances. These phenomena can be explained by studying the necking effect and the different steel composition through the manufacture process.

    Los efectos de la corrosión sobre las armaduras se manifiestan por la pérdida de sección y la variación de las propiedades mecánicas relacionadas con la ductilidad. En este trabajo se han ensayado a tracción 96 barras de acero B500SD que previamente se han sometido a niveles variables de corrosión. Los resultados muestran que los alargamientos de las barras disminuyen y el cociente entre la tensión máxima y el límite elástico aumenta conforme el nivel de corrosión avanza. A partir del estudio del efecto de entalla y de la distinta constitución metalográfica del acero a nivel de sección debido a su procedimiento de fabricación, se pueden explicar los fenómenos anteriores.

  2. Geology of the USW SD-9 drill hole, Yucca Mountain, Nevada

    Energy Technology Data Exchange (ETDEWEB)

    Engstrom, D.A. [Spectra Research Inst., Albuquerque, NM (United States); Rautman, C.A. [Sandia National Labs., Albuquerque, NM (United States)

    1996-10-01

    Drill hole USW SD-9 is one of several holes drilled under Site Characterization Plan Study as part of the characterization program at Yucca Mountain, Nevada, which has been proposed as the potential location of a repository for high-level nuclear waste. The SD-9 drill hole is located in the northern part of the potential repository area. Quantitative and semiquantitative data are included in this report for cover recovery, rock-quality designation (RQD), lithophysal cavity abundance, and fracturing. These data are spatially variable, both within and among the major formational-level stratigraphic units. Nonwelded intervals in general exhibit higher recoveries and more intact (higher) RQD values than welded intervals. The most intact, highest-RQD materials encountered within the Topopah Spring belong to the lower 33.3 ft of the middle nonlithophysal zone. This report includes quantitative data for the framework material properties of porosity, bulk and particle density, and saturated hydraulic conductivity. Graphical analysis of variations in these laboratory hydrologic properties indicates first-order control of material properties by the degree of welding and the presence of zeolite minerals. Many major lithostratigraphic contacts are not well expressed in the material-property profiles; contacts of material-property units are related more to changes in the intensity of welding. Approximate in-situ saturation data of samples preserved immediately upon recovery from the hole are included in the data tabulation.

  3. Concentrations in plasma, epithelial lining fluid, alveolar macrophages and bronchial mucosa after a single intravenous dose of 1.6 mg/kg of iclaprim (AR-100) in healthy men.

    Science.gov (United States)

    Andrews, J; Honeybourne, D; Ashby, J; Jevons, G; Fraise, A; Fry, P; Warrington, S; Hawser, S; Wise, R

    2007-09-01

    A validated microbiological assay was used to measure concentrations of iclaprim (AR-100) in plasma, bronchial mucosa (BM), alveolar macrophages (AM) and epithelial lining fluid (ELF) after a single 1.6 mg/kg intravenous 60 min iv infusion of iclaprim. Male volunteers were randomly allocated to three nominal sampling time intervals 1-2 h (Group A), 3-4 h (Group B) and 5.5-7.0 h (Group C) after the start of the drug infusion. Mean iclaprim concentrations in plasma, BM, AM and ELF, respectively, were for Group A 0.59 mg/L (SD 0.18), 0.51 mg/kg (SD 0.17), 24.51 mg/L (SD 21.22) and 12.61 mg/L (SD 7.33); Group B 0.24 mg/L (SD 0.05), 0.35 mg/kg (SD 0.17), 7.16 mg/L (SD 1.91) and 6.38 mg/L (SD 5.17); and Group C 0.14 mg/L (SD 0.05), no detectable level in BM, 5.28 mg/L (SD 2.30) and 2.66 mg/L (SD 2.08). Iclaprim concentrations in ELF and AM exceeded the MIC(90) for penicillin-susceptible Streptococcus pneumoniae (MIC90 0.06 mg/L), penicillin-intermediate S. pneumoniae (MIC90 2 mg/L), penicillin-resistant S. pneumoniae (MIC90 4 mg/L) for 7, 7 and 4 h, respectively, and Chlamydia pneumoniae (MIC90 0.5 mg/L) for 7 h. Mean iclaprim concentrations in ELF exceeded the MIC90 for Haemophilus influenzae (MIC90 4 mg/L) and Moraxella catarrhalis (MIC90 8 mg/L) for up to 4 and 2 h, respectively; in AM the MIC90 was exceeded for up to 7 h. Furthermore, the MIC90 for methicillin-resistant Staphylococcus aureus of 0.12 mg/L was exceeded at all sites for up to 7 h. These data suggest that iclaprim reaches lung concentrations that should be effective in the treatment of community-acquired pneumonia.

  4. Purification, characterization and anti-aging capacity of mycelia zinc polysaccharide by Lentinus edodes SD-08.

    Science.gov (United States)

    Wang, Liqin; Wang, Cuiqin; Gao, Xia; Xu, Nuo; Lin, Lin; Zhao, Huajie; Jia, Shouhua; Jia, Le

    2015-04-09

    In the modern society, aging had been a major problem. People may rely on many medicines to delay it. However, lots of medicines were chemosynthetic, and they would do a bad side-effect on human body. Microbial sources could be used as a potential means of producing natural antioxidants. Lentinus edodes, commercial obtained in daily life, had recently become more attractive in physiological research. Zinc was now considered as a major element in assuring the correct functioning of an organism and essential for maintaining coordination of the major homeostatic networks. To investigate the bioconversion of zinc and the physiological effects of their complex (MZPS), the present studies were processed. Mycelia polysaccharides (MPS) and mycelia zinc polysaccharides (MZPS) of Lentinus edodes SD-08 were extracted by hot water leaching and purified by DEAE-52 cellulose anion-exchange column chromatography separately. The zinc content was determined by flame atomic absorption spectrometry. The evaluation of monosaccharide compositions and proportions used gas chromatogram. The analysis of molecular weight used HPGPC chromatogram. The typical structure of polysaccharide was evaluated by IR spectrum. The antioxidant activities in vitro measured through reducing power, the scavenging effects on hydroxyl radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals. The anti-aging activities in vivo measured through the total antioxidant capacity (T-AOC), GSH peroxide (GSH-Px), superoxide dismutase (SOD) and the contents of malondialdehyde (MDA). MPS and MZPS of Lentinus edodes SD-08 were extracted and purified by DEAE-52 cellulose anion-exchange column chromatography separately, and four fractions (MPS-1, MPS-2, MZPS-1 and MZPS-2) were obtained. In addition, MPS composing of rhamnose, arabinose and mannose (molar proportion = 1.75:1.00:3.02) and MZPS containing rhamnose, arabinose, mannose and glucose (molar proportion = 7.19:2.26:1.00:8.39) were investigated by gas chromatography

  5. PENGEMBANGAN SSP TEMATIK-INTEGRATIF UNTUK MEMBANGUN KARAKTER DISIPLIN DAN KREATIF SISWA KELAS I SD

    Directory of Open Access Journals (Sweden)

    Wawan Wahyu Setyawan

    2015-01-01

    DEVELOPING THEMATIC-INTEGRATED SSP FOR BUILDING THE CHARACTERS OF DISCIPLINE AND CREATIVE OF GRADE I STUDENT ELEMENTARY SCHOOL ABSTRACT This study aims to produce integrated learning sets in the form of thematic SSP that can develop the characters of discipline and creative of grade I students of elementary school.This was a research and development study consisting of seven steps, namely: preliminary study and data collection, planning, product draft development, preliminary field tryout, revision of the tryout result, field tryout, product finalization based the field tryout result, field implementation testing, final product finalization, and dissemination. The developed SSP was evaluated by a science subject expert to assess the validity. The tryout subjects comprised 82 students consisting of 26 students of SD Baran, Pundong, Bantul, DIY in the small-scale tryout, 25 students in the control class of SD Manding Tengah, Bantul, DIY and 31 students in the experimental class of SD 1 Tulung, Bantul, DIY. The results of this study are in the form of SSP consisting of: a syllabus, lesson plans, course sheets, student worksheets, and evaluation sheets. The results of the evaluation show that the developed syllabus is good score of 47. The developed lesson plans score of 67, student course sheets score of 65, student worksheets score of 47, and assessment instruments, are very good , while the developed learning media are good score of 66. The results of the tryout show that the developed SSP otherwise meet the criteria for the practical views of teacher assessment score of 281 and a score of 730 student responses. In field trials the results obtained for the control class average pretest score of 70.8 and an average posttest score of 80.8. While the experimental class scored an average of 74.1 pretest and posttest score of 90.9. Improved control class scores of 10 and an increase of 16.8 experimental class. Teaching using developed SSP is capable of developing

  6. Beta-decay strength and isospin mixing studies in the sd and fp-shells

    International Nuclear Information System (INIS)

    Jokinen, A.; Aeystoe, J.; Dendooven, P.; Honkanen, A.; Lipas, P.; Peraejaervi, K.; Oinonen, M.; Siiskonen, T.

    1998-01-01

    We have studied beta decays of M T 41 Ti shows a large, 10(8) %, isospin mixing of IAS and the Gamow-Teller strength is observed to be quenched by a factor of q 2 =0.64. These results can be reproduced qualitatively in our shell model calculations. We have observed for the first time proton and gamma decay of the isobaric analogue state in 23 Mg. Our results on the isospin mixing of the isobaric analogue state agrees well with the shell model calculations. The obtained proton branch of the IAS is used to extract the transition strength for the reaction 22 Na(p,γ) 23 Mg

  7. From $^{27}$Mg to ${33}$Mg transition to the "Island of inversion"

    CERN Document Server

    Yordanov, Deyan

    Since introduced in nuclear physics, the concept of shell structure and magic numbers has governed our understanding of nuclear matter in atomic nuclei close to stability. Nuclear species with a magic number of protons and/or neutrons are known to be more stable and close to spherical in shape. Experimental studies of 30Ne, 31Na and 32Mg, systems with a closed neutron sd shell (N=20), provide evidence for a ground-state deformation in these nuclei. The observed phenomenon is understood as an inversion of the normal spherical ground-state configuration, expected according to the traditional shell model, with deformed states governed by particle-hole excitations over the N=20 shell gap. The properties of nuclei in this Island of inversion are of particular importance for the theoretical modeling of the region. The present doctoral dissertation reports on the first determination of the nuclear ground-state spins and magnetic moments of 31,33Mg, obtained by means of laser spectroscopy in combination with nuclear...

  8. Exploring the island of inversion with the d({sup 30}Mg,p){sup 31}Mg reaction

    Energy Technology Data Exchange (ETDEWEB)

    Bildstein, Vinzenz

    2010-12-07

    In this thesis the results of a d({sup 30}Mg,p){sup 31}Mg experiment at REX-ISOLDE are presented. {sup 31}Mg is located directly on the border of the so-called ''Island of Inversion'', a region of the nuclear chart around {sup 32}Mg where deformed intruder states of the fp shell form the ground states of the nuclei instead of the normal spherical states of the sd shell. A recent experiment has shown the ground state of {sup 31}Mg to be a 1/2{sup +} state and indicates more than 90% intruder configuration. The question whether the low-lying excited states of {sup 31}Mg are deformed intruder states as well or rather spherical states from the sd shell, indicating shape coexistence, is still open. The d({sup 30}Mg,p) {sup 31}Mg reaction is thus a good tool to gain more insight into the nature of the Island of Inversion. In the framework of this thesis the angular distribution of protons was measured for the second excited state at 221 keV in coincidence with de-excitation {gamma}-rays. The angular distribution was compared to DWBA calculations for different transferred orbital momenta, identifying the state for the first time as an l=1 state. The experiment was performed with the new charged particle detector setup T-REX. The setup is optimized for transfer reactions with radioactive beams in inverse kinematics. T-REX was developed, built, installed, and used for this first one neutron transfer experiment in the context of this thesis. The T-REX setup consists of {delta}E-E{sub Rest} telescopes made out of position sensitive silicon detectors that cover almost 4{pi} of the solid angle and can be combined with the MINIBALL {gamma}-ray detector array. It has a large solid angle for the detection and identification of the light recoils from transfer reactions. T-REX allows in combination with the MINIBALL Germanium detector array the tagging of the excited states by their characteristic {gamma}-rays. The combination of T-REX and MINIBALL achieves an

  9. Myasthenia Gravis (MG): Medical Management

    Science.gov (United States)

    ... take effect, prior to surgery or for myasthenic crisis. However, some people receive regular plasmapheresis or IVIg as a supplement to immunosuppressant drugs. Pregnancy In rare cases, pregnancy appears to trigger the onset of MG. ...

  10. High spin structure of {sup 35}Cl and the sd-fp shell gap

    Energy Technology Data Exchange (ETDEWEB)

    Kshetri, Ritesh [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Saha Sarkar, M. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India)]. E-mail: maitrayee.sahasarkar@saha.ac.in; Ray, Indrani [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Banerjee, P. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Sarkar, S. [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah 711103 (India); Raut, Rajarshi [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Goswami, A. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Chatterjee, J.M. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Chattopadhyay, S. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Datta Pramanik, U. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Mukherjee, A. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Dey, C.C. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Bhattacharya, S. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Dasmahapatra, B. [Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata 700064 (India); Bhowal, Samit [Department of Physics, Surendranath Evening College, Kolkata 700009 (India); Gangopadhyay, G. [University of Calcutta, 92, Acharya Prafulla Chandra Road, Kolkata 700009 (India); Datta, P. [Anandamohan College, 102/1, Raja Rammohan Sarani, Kolkata 700009 (India); Jain, H.C. [Tata Institute of Fundamental Research, Mumbai 400005 (India); Bhowmik, R.K. [Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India); Muralithar, S.; Singh, R.P.; Kumar, R. [Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067 (India)

    2007-01-15

    The high spin states of {sup 35}Cl have been studied by in-beam {gamma}-spectroscopy following the fusion-evaporation reaction {sup 12}C({sup 28}Si,{alpha}p){sup 35}Cl at E{sub lab}=70 and 88 MeV, using the Indian National Gamma (Clover) Array (INGA). Lifetimes of six new excited states have been estimated for the first time. To understand the underlying structure of the levels and transition mechanisms, experimental results have been compared with those from the large basis cross-shell shell model calculations. Involvement of orbitals from fp shell and squeezing of the sd-fp shell gap seem to be essential for reliable reproduction of high spin states.

  11. High spin structure of 35Cl and the sd-fp shell gap

    International Nuclear Information System (INIS)

    Kshetri, Ritesh; Saha Sarkar, M.; Ray, Indrani; Banerjee, P.; Sarkar, S.; Raut, Rajarshi; Goswami, A.; Chatterjee, J.M.; Chattopadhyay, S.; Datta Pramanik, U.; Mukherjee, A.; Dey, C.C.; Bhattacharya, S.; Dasmahapatra, B.; Bhowal, Samit; Gangopadhyay, G.; Datta, P.; Jain, H.C.; Bhowmik, R.K.; Muralithar, S.; Singh, R.P.; Kumar, R.

    2007-01-01

    The high spin states of 35 Cl have been studied by in-beam γ-spectroscopy following the fusion-evaporation reaction 12 C( 28 Si,αp) 35 Cl at E lab =70 and 88 MeV, using the Indian National Gamma (Clover) Array (INGA). Lifetimes of six new excited states have been estimated for the first time. To understand the underlying structure of the levels and transition mechanisms, experimental results have been compared with those from the large basis cross-shell shell model calculations. Involvement of orbitals from fp shell and squeezing of the sd-fp shell gap seem to be essential for reliable reproduction of high spin states

  12. KEEFEKTIFAN MULTIMEDIA BERBASIS KOMPUTER UNTUK PEMBELAJARAN ILMU PENGETAHUAN SOSIAL KELAS IV SD PERCOBAAN II DEPOK SLEMAN

    Directory of Open Access Journals (Sweden)

    Sri Budyartati

    2016-11-01

    Full Text Available This research aims at: (1 identifying the effecteiveness of multi media-based learning on Social Science; (2 describing the attractiveness of multi media-based learning on Social Science; which is carried out at SD Percobaan II Caturtunggal Depok Sleman Yogyakarta, term 2007/2008. The research design is pretest-posttest control group design. The data are drwan through tests which are analized quantitatively; and questionaire to measure the attractiveness of multimedia-based learning model, which will be analized qualitatavely. The treatment is carried out out by using storyboard, which is approved by experts of multimedia and teaching method. The result of the analysis shows that multi media-based learning model significantly influence the students’ achievement in Social Science. While the attractivemess of multi media-based learning relatively high, which is shown by 4.2 of average (in 1-5 scale measure.

  13. Intercomparison of natural radionuclide measurements in marine sediment sample SD-N-1/2

    International Nuclear Information System (INIS)

    1985-06-01

    This intercomparison exercise was organized with the aim of providing to the participating laboratories a possibility of testing the performance of their analytical methods and to acquire basic data for establishing reference values for a number of natural radionuclides in the sediment material SD-N-1/2 from the North Sea floor. In tables are presented results expressed in mBq.g -1 on potassium, uranium isotopes, thorium-232 with the respective decay products, thorium-230, radium-226 and lead-210. Altogether 98 laboratories from 42 Member States joined this intercomparison. The results show generally good agreement, but more analytical work is needed to improve the present status of the lead-210 certification. Gamma and alpha spectroscopy were the most frequently used as the analytical techniques

  14. Source identification in acoustics and structural mechanics using Sierra/SD.

    Energy Technology Data Exchange (ETDEWEB)

    Walsh, Timothy Francis; Aquino, Wilkins [Duke University Durham, NC; Ross, Michael

    2013-03-01

    In this report we derive both time and frequency-domain methods for inverse identification of sources in elastodynamics and acoustics. The inverse/design problem is cast in a PDE-constrained optimization framework with efficient computation of gradients using the adjoint method. The implementation of source inversion in Sierra/SD is described, and results from both time and frequency domain source inversion are compared to actual experimental data for a weapon store used in captive carry on a military aircraft. The inverse methodology is advantageous in that it provides a method for creating ground based acoustic and vibration tests that can reduce the actual number of flight tests, and thus, saving costs and time for the program.

  15. Simulation and Optimization of One Live Pig Low-Carbon Industry Chain Using SD-RCCM

    Directory of Open Access Journals (Sweden)

    Jiuping Xu

    2013-01-01

    Full Text Available The destruction of the natural environment has been drawing more and more attention. Developing low-carbon industry chains is an effective solution to the conflict between rapid economic growth and high CO2 emissions. Summarizing various traditional and new industry chain sustainable development, live pig industry was chosen as a typical industry chain to study low-carbon development using a system dynamics and random chance-constrained model (SD-RCCM. Leshan, a world natural and cultural heritage area in China, was selected as a typical city to analyze the low-carbon pig industry. Three different programs based on distribution ratios were selected to study this industry. The results showed that program 1, which considers both environmental and economic benefits, realizes sustainable development. In order to extend the pig industry chain and fully utilize pig ordure and other waste, introducing a Clean Development Mechanism (CDM and household biogas exploitation program is recommended.

  16. ECOLITERACY SISWA SD DALAM KEGIATAN PENGELOLAAN SAMPAH MELALUI GROUP INVESTIGATION BERBASIS OUTDOOR STUDY

    Directory of Open Access Journals (Sweden)

    Fanny Karlina

    2017-07-01

    Full Text Available The aim of this research is to improve the student’s ecoliteracy in waste managing activities on social studies trough group investigation based outdoor study. This research is Classroom Action Research toward fourth graders have been held on two cycles. The conclusion of this research is student’s ecoliteracy cognitive aspect increases is 20%, application aspect increases is 49,6%, and attitude aspect increases is 19,4% after the two cycle action with group investigation based outdoor study. Penelitian ini bertujuan mendeskripsikan peningkatan ecoliteracy siswa dalam kegiatan pengelolaan sampah dalam pembelajaran IPS melalui group investigation berbasis outdoor study. Penelitian ini menerapkan jenis Penelitian Tindakan Kelas (PTK terhadap siswa kelas IV SD yang dilaksanakan dalam dua siklus. Hasil penelitian menyimpulkan adanya peningkatan ecoliteracy siswa dari aspek pengetahuan sebesar 20%, aspek aplikasi sebesar 49,6%, dan aspek sikap sebesar 19,4% setelah mengikuti dua siklus pembelajaran dengan group investigation berbasis outdoor study.

  17. An automated approach for early detection of diabetic retinopathy using SD-OCT images.

    Science.gov (United States)

    ElTanboly, Ahmed H; Palacio, Agustina; Shalaby, Ahmed M; Switala, Andrew E; Helmy, Omar; Schaal, Shlomit; El-Baz, Ayman

    2018-01-01

      This study was to demonstrate the feasibility of an automatic approach for early detection of diabetic retinopathy (DR) from SD-OCT images. These scans were prospectively collected from 200 subjects through the fovea then were automatically segmented, into 12 layers. Each layer was characterized by its thickness, tortuosity, and normalized reflectivity. 26 diabetic patients, without DR changes visible by funduscopic examination, were matched with 26 controls, according to age and sex, for purposes of statistical analysis using mixed effects ANOVA. The INL was narrower in diabetes (p = 0.14), while the NFL (p = 0.04) and IZ (p = 0.34) were thicker. Tortuosity of layers NFL through the OPL was greater in diabetes (all p diabetes. In turn, carries the promise to a reliable non-invasive diagnostic tool for early detection of DR.

  18. Penelitian tentang ukuran acuan sepatu pelajar wanita indonesia tingkat SD, SLTP dan SLTA

    Directory of Open Access Journals (Sweden)

    Sri Bandi

    1995-06-01

    Full Text Available The study was subjected to 500 Indonesia School girls from North Sumatra Province (Medan, West Java Province (Bandung, Central – Java Province (Semarang, East-Java Province (Surabaya and DKI Jaya. 100 samples of foot sizes which represented foot sizes of SD, SLTP and SLTA School girls werw taken from each province. By analyzing the data of foot sizes of the school girls, a suggestion on design of shoe lasts seritable with the shape and type of foot, fits and conform the requirements to be used as lost in shoe manufacturing could be proposed. The results of data analyse shown that : 1. The length of soles ranged from 30-35, 5 PS, the mean of which was 33 PS. 2. Instep girth ranged withim E, F, G, I.3. The foot sizes scattered between (4-17 years of age at (32-35 PS.

  19. Spectral Analysis of the sdO Standard Star Feige 34

    Science.gov (United States)

    Latour, M.; Chayer, P.; Green, E. M.; Fontaine, G.

    2017-03-01

    We present our current work on the spectral analysis of the hot sdO star Feige 34. We combine high S/N optical spectra and fully-blanketed non-LTE model atmospheres to derive its fundamental parameters (Teff, log g) and helium abundance. Our best fits indicate Teff = 63 000 K, log g = 6.0 and log N(He)/N(H) = -1.8. We also use available ultraviolet spectra (IUE and FUSE) to measure metal abundances. We find the star to be enriched in iron and nickel by a factor of ten with respect to the solar values, while lighter elements have subsolar abundances. The FUSE spectrum suggests that the spectral lines could be broadened by rotation.

  20. Mg and Sr in Arctic echinoderm calcite: Nature or nurture?

    Science.gov (United States)

    Iglikowska, A.; Borszcz, T.; Drewnik, A.; Grabowska, M.; Humphreys-Williams, E.; Kędra, M.; Krzemińska, M.; Piwoni-Piórewicz, A.; Kukliński, P.

    2018-04-01

    The Mg/Ca and Sr/Ca ratios in echinoderm skeletal calcite are used as a proxy for Phanerozoic seawater changes, since the skeletal concentrations are, to some extent, controlled by environmental factors. However, it remains unclear how the influence of environmental factors is modified by vital effects, especially in polar waters. Therefore, the goal of this study was to compare the ratios of Mg/Ca and Sr/Ca among the skeletal parts of 10 common Arctic echinoderm species belonging to three classes Echinoidea, Asteroidea and Ophiuroidea that contribute substantially to the carbon cycle in the Arctic benthic system. Significant differences were recorded in echinoid skeletal element concentrations among specific skeletal parts. The lowest Mg/Ca and Sr/Ca ratios were detected in the spines (mean Mg/Ca 37.5 ± 8.8 SD; Sr/Ca 1.8 ± 0.1). The components of the Aristotle's lantern (epiphyses, pyramids and rotulas) were characterised by the highest Mg levels (Mg/Ca 79.9 ± 6.0; 75.2 ± 9.1; 60.1 ± 3.8, respectively). It is likely that mouth parts experience greater mechanical pressure compared to other body parts, and the higher content of Mg in the Aristotle's lantern contributes to its robustness. We did not find any distinctive trends in the distribution of skeletal elements in the asteroid and ophiuroid skeletal parts. The heterogeneous concentrations of Mg and Sr in different skeleton parts of the echinoids suggest possible physiological regulation of the chemical composition rather than the composition only being influenced by the environment. We cannot recommend echinoderm skeletons as reliable indicators in palaeoenvironmental reconstructions due to the possible biological control of skeletal chemistry, which may interfere with the effect of environmental variables.

  1. Sustainable development business case report : renewable electricity generation : SD business case

    International Nuclear Information System (INIS)

    2005-11-01

    This investment report is the first in a series that will be released by Sustainable Development Technology Canada as part of the SD Business Case. It focuses primarily on generating electricity from renewable energy sources and examines 4 primary technology groups or sub-sectors including wind generated electricity; solar PV generated electricity; stationary fuel cell generated electricity; and electricity generated from biological sources. Each sub-sector has been assessed in terms of its market dynamics, technology makeup and conditions, sustainability impacts, and investment risk. A selection of the leading technologies in each technology area are brought forward and rated in terms of their respective investment potential. The report first presents an overview of the SD business case plan. It defines the primary audience of the report, lists the sectors and investment categories to be assessed by the business case and provides some background information on Sustainable Development Technology Canada. The report presents the framework for data collection and analysis and an executive summary of the complete report. It then presents the results of the market assessment report for each of the 4 sectors. This includes demand, infrastructure renewal, environmental commitments, renewable energy value proposition, and future market potential. The section covering the technology assessment report discusses the various technologies and ranks them. The sustainability assessment report section provides an economic, environmental and societal assessment of each sub-sector. Risk assessment is conducted in terms of technology and non-technology related risk. Last, the report presents conclusions and investment priorities. 11 tabs., 7 figs

  2. PENERAPAN SUPERVISI KUNJUNGAN KELAS UNTUK MENINGKATKAN KINERJA GURU SD NEGERI 2 KALIMANGGIS KECAMATAN KALORAN, TEMANGGUNG

    Directory of Open Access Journals (Sweden)

    Suprih Danurwati

    2015-12-01

    Full Text Available Suprih Danurwati, 942013161. Implementation of supervision class visiting to increase teacher’s performance of SD Negeri 2 Kalimanggis District of Kaloran. Thesis. The graduatiton Program Master of Management Education Satya Wacana Christian University Salatiga. Supervisor Prof. Dr. Slameto, M.Pd. This study is to determine that through the implementation of supervision class visiting can improve the performance of teachers in the learning management. The subjects of this study are teachers in SD Negeri 2 Kalimanggis, Kaloran, Temanggung.  The procedure used in this study consists of a series of three main activities undertaken in a repeating cycle, including (a plan, (b action by observation, and (c reflection. research approach using action research methods, while the method of data collection using the study documentation, observations, questionnaires, and interviews. The results showed an increasing in the ability of teachers to prepare lesson plans and manage the learning of the first act, second, until the third act. The inference that supervision class visiting that can improve the performance of teachers in the learning management. Suggestions given to teachers, is taking  advantage of supervision activities as a source of information to improve the competence and performance, for principals use the results of this study as a reference in conducting research, while for school superintendent will use the results of this study as one of the references in activity guidance to the heads of schools and teachers to improve their performance.

  3. INTERVENSI ERGONOMI DALAM PEMBELAJARAN SAINS MENGURANGI KELUHAN MUSKULOSKELETAL SISWA SD 1 SANGSIT KECAMATAN SAWAN KABUPATEN BULELENG

    Directory of Open Access Journals (Sweden)

    Nyoman Wijana

    2014-09-01

    Full Text Available Tujuan penelitian ini adalah untuk mengetahui peranan intervensi ergonomi dalam pembelajaran sains untuk menurunkan keluhan muskuloskeletal siswa SD. Jenis penelitian ini termasuk jenis penelitian quasi eksperimental dengan rancangan randomized pre-test and post-test control group design. Pada kelompok kontrol pembelajarannya dengan cara konvensional (tanpa intervensi ergonomi dan kelompok eksperimen dengan intervensi ergonomi. Intervensi ergonomi dalam pembelajaran sains mengacu pada pendekatan ergonomi (PE yakni gabungan antara SHIP dan TTG. Implementasi dari hal ini adalah melakukan perbaikan dan atau penataan terhadap instrumental input, environmental input dan porcess, sedangkan untuk di kelompok kontrol tidak dilakukan intervensi ergonomi, di mana kondisi instrumental input, environmental input dan process berlangsung secara konvensional. Pengambilan sampel dilakukan secara random. Analisis data dilakukan dengan menggunakan uji Mann-Whitney dengan taraf signifikansi 5 %. Simpulan dari hasil penelitian ini adalah (1 intervensi ergonomi dapat menurunkan keluhan muskuloskeletal siswa SD  (p < 0,05; (2 Hasil pengukuran dengan nordic body map pada kelompok kontrol terjadi keluhan pada otot pinggang (86,1%, otot pantat (86,1%, otot punggung (84,8%, otot lengan atas kiri (78,8%, otot lengan atas kanan (67,9%, otot siku kanan (78,2%, otot siku kiri (74,6%, paha kanan (76,9%, paha kiri (75,7%, otot betis kanan  (66,1%, otot betis kiri (64,2%, otot pergelangan kaki kanan (67,3%, dan otot pergelangan kaki kiri (65,5%. Dengan demikian dapat disarankan bahwa intervensi ergonomi dalam pembelajaran dengan menggunakan PE sebaiknya diterapkan dalam pembelajaran sains di SD karena telah terbukti dapat menurunkan keluhan muskuloskeletal.[MEDICINA 2009;40:11-20].  

  4. Peningkatan Pengetahuan Dan Keterampilan Guru SD Muhammadiyah 4 Batu Dalam Mengelola Pembelajaran ABK melalui Lesson Study

    Directory of Open Access Journals (Sweden)

    Endang Poerwanti

    2015-08-01

    Full Text Available Anak-anak dengan kebutuhan khusus (ABK yang dikenal sebagai anak-anak cacat, atau anak-anak yang luar biasa, anak-anak yaitu yang menyimpang secara signifikan dari kriteria normal, baik dari aspek fisik, psikologis, emosional dan sosial. Mulai tahun 2001, pemerintah mulai program pendidikan inklusif, pendidikan inklusif adalah untuk memasukkan anak-anak dengan kebutuhan khusus belajar bersama dengan anak normal di kelas dan sekolah reguler. Masalahnya, guru di sekolah reguler tidak berpendidikan dan dipersiapkan khusus untuk mengelola proses belajar mengajar untuk ABK. Masalah juga dialami oleh SD Muhammadiyah 4 Batu, untuk membantu memecahkan masalah tim FKIP menerapkan aktivitas Lesson Study untuk meningkatkan pengetahuan guru dan keterampilan dalam mengelola ABK pembelajaran individual Lesson study yang dilakukan dalam tiga siklus yang dikemas dalam tiga model pembelajaran; ABK belajar sendiri di kelas khusus, pengajaran dan pembelajaran di kelas reguler dan pengajaran dan pembelajaran ABK di kelas reguler dengan bantuan GPK. Setiap siklus terdiri dari beberapa kegiatan. Studi pelajaran terdiri dari empat kegiatan yang disingkat PDCA; P (rencana atau perencanaan, D (lakukan adalah pelaksanaan pembelajaran oleh seorang guru sebagai model dan diamati oleh guru lainnya, C (cek merupakan cerminan dari perbaikan lebih lanjut proses pembelajaran, dan A (tindak adalah tindak lanjut.  Dari tiga tahapan pelaksanaan proses belajar mengajar ABK dapat memberikan manfaat bagi para guru untuk meningkatkan pemahaman dan keterampilan untuk mengelola pembelajaran untuk ABK. Melalui Lesson Study diharapkan ABK mendapatkan layanan yang tepat dan belajar yang optimal. Beberapa temuan dampak pada perilaku siswa di kelas adalah bahwa siswa dapat menerima keberadaan ABK di. Meskipun keterbatasan kelas fasilitas guru mendapatkan pengalaman berharga yang terkait dengan pengembangan pembelajaran melalui forum ABK Lesson Study. Jadi kebutuhan untuk pelaksanaan tindak

  5. Validated automatic segmentation of AMD pathology including drusen and geographic atrophy in SD-OCT images.

    Science.gov (United States)

    Chiu, Stephanie J; Izatt, Joseph A; O'Connell, Rachelle V; Winter, Katrina P; Toth, Cynthia A; Farsiu, Sina

    2012-01-05

    To automatically segment retinal spectral domain optical coherence tomography (SD-OCT) images of eyes with age-related macular degeneration (AMD) and various levels of image quality to advance the study of retinal pigment epithelium (RPE)+drusen complex (RPEDC) volume changes indicative of AMD progression. A general segmentation framework based on graph theory and dynamic programming was used to segment three retinal boundaries in SD-OCT images of eyes with drusen and geographic atrophy (GA). A validation study for eyes with nonneovascular AMD was conducted, forming subgroups based on scan quality and presence of GA. To test for accuracy, the layer thickness results from two certified graders were compared against automatic segmentation results for 220 B-scans across 20 patients. For reproducibility, automatic layer volumes were compared that were generated from 0° versus 90° scans in five volumes with drusen. The mean differences in the measured thicknesses of the total retina and RPEDC layers were 4.2 ± 2.8 and 3.2 ± 2.6 μm for automatic versus manual segmentation. When the 0° and 90° datasets were compared, the mean differences in the calculated total retina and RPEDC volumes were 0.28% ± 0.28% and 1.60% ± 1.57%, respectively. The average segmentation time per image was 1.7 seconds automatically versus 3.5 minutes manually. The automatic algorithm accurately and reproducibly segmented three retinal boundaries in images containing drusen and GA. This automatic approach can reduce time and labor costs and yield objective measurements that potentially reveal quantitative RPE changes in longitudinal clinical AMD studies. (ClinicalTrials.gov number, NCT00734487.).

  6. Lactogenic Activity of an Enzymatic Hydrolysate from Octopus vulgaris and Carica papaya in SD Rats.

    Science.gov (United States)

    Cai, Bingna; Chen, Hua; Sun, Han; Sun, Huili; Wan, Peng; Chen, Deke; Pan, Jianyu

    2015-11-01

    The traditional Chinese medicine theory believes that octopus papaya soup can stimulate milk production in lactating women. The objective of this study was to determine whether dietary supplementation with an enzymatic hydrolysate of Octopus vulgaris and Carica papaya (EHOC) could increase milk production and nutritional indexes in Sprague Dawley (SD) rats. Female SD rats (n = 24) were fed a control diet (n = 8), EHOC-supplemented diet, or a positive control diet (Shengruzhi) from day 10 of pregnancy to day 10 of lactation. Maternal serum, mammary gland (day 10 of lactation), milk, and pup weight (daily) were collected for analysis. Results showed that the EHOC diet obviously elevated daily milk yield and pup weight compared to the control group (P < .05). The EHOC diet was found to increase the concentration of prolactin (PRL), progesterone (P), estradiol (E2), and growth hormone (GH) significantly in the circulation and mammary gland. Mammary glands of EHOC-treated dams showed clear lobuloalveolar development and proliferation of myoepithelial cells, but no striking variations were observed among the groups. Furthermore, the nutrition content and immune globulin concentration in the milk of EHOC-supplemented dams were higher than those of the control group, especially the cholesterol, glucose, and IgG were higher by 44.98% (P < .001), 42.76% (P < .01), and 42.23% (P < .01), respectively. In conclusion, this article demonstrates that EHOC administration has beneficial effects on milk production in the dams and on performance of the dam and pup. These results indicate that EHOC could be explored as a potentially lactogenic nutriment for lactating women.

  7. MODEL PEMBELAJARAN PENJAS MELALUI PERMAINAN UNTUK PEMBENTUKAN KARAKTER KERJA SAMA, TANGGUNG JAWAB DAN KEJUJURAN SISWA SD

    Directory of Open Access Journals (Sweden)

    Rubiyatno Rubiyatno

    2013-09-01

    Abstract This study aims at delivering game models for especially top grade elementary school students to build character, cooperation, responsibility and honesty that are ready to use. The teachers are expected to use this game model as one of integrated character value instructional forms that is appropriate and effective through enjoyable playing activities.This educational research and development (R & D was conducted by adapting R & D steps consisting of: (1 collecting information and information analysis, (2 developing initial product, (3 expert validation and revision, (4 preliminary field test and revision, (5 main field test and revision, and (6 making the final product. The preliminary field test was conducted to 14 students year 5 of SD.N.Pantaran Kulon Progo and the main field test was conducted to 40 students Class 4 and 5 of SD.N.2 Kalipetir Pengasih Kulon Progo. Data collecting instrument used were: (1 interview guide, (2 rating scale, (3 observation guide for games observation, (4 observation guide for games effectiveness, and (5 observation guide for perpetrator teachers. The data were analyzed using quantitative descriptive analysis and qualitative descriptive analysis.The result of this study is in the form of a game guidance book of integrated character building for corporation, responsibility, and honesty in the form of physical activities for upper grade elementary school students, consisting of six games: (1 blast fishing game, (2 ball war game, (3 shoot the ball to the hula hoop game, (4 my goal and basket game, (5 volley throw and catch, and (6 touching ball to the body game. As a conclusion, the game models are very good and effective to transfer character value, corporation, responsibility, and honesty Keywords: model of learning, character and elemantary students.

  8. [Choroidal thickness assessment with SD-OCT in high myopia with dome-shaped macula].

    Science.gov (United States)

    Chebil, A; Ben Achour, B; Chaker, N; Jedidi, L; Mghaieth, F; El Matri, L

    2014-03-01

    To measure macular choroidal thickness (CT) using spectral-domain optical coherence tomography (SD-OCT) in highly myopic eyes with dome-shaped macula (DSM), and to investigate whether the choroid is thicker in these eyes compared to highly myopic eyes without MB. A cross-sectional study of 200 eyes was performed between January 2010 and June 2012. Twenty-four highly myopic eyes (12%) had a dome-shaped macula. All patients underwent a complete ophthalmological examination, SD-OCT (TOPCON 2000), and B-scan ultrasonography. OCT scans were analyzed in 7 sections, and subfoveal CT was measured manually between the Bruch's membrane and the internal aspect of the sclera. The 20 eyes with isolated dome-shaped macular were paired by age and axial length (AL) with 20 eyes without macular involvement. In the subgroup with isolated MB, the mean subfoveal CT was 101.86 μm (± 21.35 μm). A statistically significant negative correlation was found between CT and AL (r=-0.623, P=0.0001). The regression equation demonstrated a decrease of 8.3 μm per mm of AL. In the subgroup without MB, matched with the subgroup with MB by age (P=0.591), and AL (P=0.815), the mean subfoveal CT was 89.54 μm (± 20.12 μm). The comparison between the two subgroups found a statistically significant difference in subfoveal CT (Pmacula compared to highly myopic eyes without dome-shaped macula. These findings suggest that abnormalities of the choroid may play a role in the pathogenesis of dome-shaped macula. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  9. The Effect of Propiconazole and Protective Effects of Selenium Gene Expression Profile of Caspase 9 in the Testicular Tissue of Male Sprague Dawley (SD Rats

    Directory of Open Access Journals (Sweden)

    S Rashidi pouya

    2016-08-01

    Full Text Available Background & aim: Conazoles including imidazoles or triazoles are anti- fungal agents widely used to prevent fungal growth and their infections. Propiconazole placed in this group is a systemic fungicide used widely for detoxification of cereal seeds especially rice in Iran and other countries. This fungicide were designed to inhibit a specific cytochrome P450, CYP51 (lanosterol-14-α- demethylase, a critical step in the biosynthesis of ergosterol, a steroid required for the formation of the fungal cell wall. In the present experimental study, the effect of propiconazole on Caspase 9 gene expression profile as an initiator of apoptotic process and protective effect of selenium were investigated. Methods: Forty SD rats were divided into 10 groups of 4,  including : control , sham1 (solvent of propiconazole, distilled water, sham 2 (solvent of selenium, normal saline and 1 group received 0.5 mg/kg selenium ,3 groups received propiconazole in doses of 10,50,75  mg/kg and 3 groups received propiconazole in doses of 10,50,75 mg/kg propiconazole with 0.5 mg/kg of selenium. Injections were intrapritoneal for two weeks in alternate days. Then, using RT-PCR and Total Lab program gene expression of caspase-9 testicular of all groups were studied. Data were analyzed using descriptive statistics. Results:  A significant increase of caspase 9 expression were observed among all experimental groups compared to control and sham groups. These findings indicated that 0.5 mg/kg selenium is not a suitable dose to create protection in this experimental study.  Conclusion: The significant increase in Caspase 9 gene expression profile observed in all experimental groups as compared to control suggests activation of apoptosis and inefficacy of selenium to protect the testis against induced damages.

  10. Effect of fermented milk containing Lactobacillus rhamnosus SD11 on oral microbiota of healthy volunteers: A randomized clinical trial.

    Science.gov (United States)

    Rungsri, P; Akkarachaneeyakorn, N; Wongsuwanlert, M; Piwat, S; Nantarakchaikul, P; Teanpaisan, R

    2017-10-01

    The aims of this study were to evaluate whether short-term consumption of fermented milk containing Lactobacillus rhamnosus SD11 affected levels of oral microbiota in vivo and whether L. rhamnosus SD11 could colonize in the human mouth. We also monitored for potential side effects of the probiotic. The applicability of using L. rhamnosus SD11 compared with Lactobacillus bulgaricus as a starter culture for fermented milk was evaluated. After informed consent, 43 healthy young adults were recruited and randomly assigned to either the probiotic or control group and received fermented milk containing L. rhamnosus SD11 or L. bulgaricus, respectively, once daily for 4 wk. The numbers of mutans streptococci, lactobacilli, and total bacteria in saliva were counted at baseline and then after 4 and 8 wk. An oral examination was performed at baseline and after 8 wk. The persistence of L. rhamnosus SD11 was investigated by DNA fingerprinting using arbitrary primer-PCR. Results demonstrated that statistically significant reductions in mutans streptococci and total bacteria were observed in the probiotic group compared with the control group, and the number of lactobacilli was significantly increased in both groups after receiving fermented milks. Lactobacillus rhamnosus SD11 could be detected (in >80% of subjects) up to 4 wk following cessation of dosing among subjects in the probiotic group. No side effects were reported. Thus, L. rhamnosus SD11 could be used as a starter culture for fermented milk. Daily consumption of L. rhamnosus SD11-containing fermented milk for 4 wk may have beneficial effects on oral health by reducing salivary levels of mutans streptococci. The probiotic was apparently able to colonize the oral cavity for a longer time than previously reported. However, the potential benefits of probiotic L. rhamnosus SD11 on oral health require further evaluation with a larger group of volunteers in a longer-term study. Copyright © 2017 American Dairy Science

  11. EFEKTIVITAS PROJECT BASED LEARNING TERHADAP KETERAMPILAN MENULIS BAHAN AJAR IPA CALON GURU SD

    Directory of Open Access Journals (Sweden)

    - Susilawati

    2018-01-01

    Full Text Available Abstract:. The purpose of this research is to analyze the effectiveness of Project Based Learning (PjBL of writing skills on Science teaching materials to elementary school teachers candidates.This research used experimental methods (single-one group pretest-posttest design with instruments such as portofolio assessment sheets, observation sheets, and  questionnaire sheets .The effectiveness of analyzing used n-gain and t-test .The subject of this research is elementary school teachers candidates who contracted “Science Learning”subject  in a program study teacher education of elementary school at University Muhammadiyah Cirebon. The findings of this study has produced a contextual book for Science teaching material. In addition, there is an increased of elementary school teachers candidates who prepared the teaching materials in a printed form relevant to the needs and characters of the students as well as the curriculum. It is proven by assessments that the ability rose significantly from 2,71 (category  is adequate skill to 3,83 (category is skilled and supported by the n-gain value  at 0,87. Based on the t-test count of 8,050 larger than t-table 2,045. Recommendations from this research is that PjBL as a learning model could become one of the alternative learning models to improve writing skills material for elementary school teachers candidates. Keyword: Project-Based-Learning, science-materials-teaching, elementary-schoo-teachers- candidates.   Abstrak: Tujuan penelitian ini untuk menganalisis efektivitas Project Based Learning (PjBL terhadap keterampilan menulis bahan ajar IPA Calon Guru SD. Penelitian ini menggunakan metode eksperimen (Single-One Group Pretest-Posttest Design dengan menggunakan instrumen berupa lembar penilaian portofolio, lembar observasi, dan lembar angket. Efektivitas dianalisis menggunakan n-gain dan uji T. Subjek penelitian ini adalah mahasiswa calon guru yang mengontrak matakuliah Pembelajaran IPA di

  12. SISTEM INFORMASI COMMUNICATION BOOK BERBASIS WEB (Studi Kasus : SD Salman Al Farisi Bandung

    Directory of Open Access Journals (Sweden)

    Fitriyani Fitriyani

    2016-03-01

    Full Text Available ABSTRAK Communication Book kini sudah menjadi istilah yang akrab di kalangan murid SD. Sebagian sekolah sudah menerapkannya sebagai sarana komunikasi antara guru dengan orangtua. Communication Book berbeda dengan rapor atau laporan reguler. Rapor dan laporan reguler biasanya diberikan pada jangka waktu tertentu, sedangkan communication book bisa digunakan kapan saja saat diperlukan. Misalnya untuk menyampaikan pengumuman yang berkaitan dengan kegiatan proses belajar-mengajar. Communication book ini bertujuan agar orangtua mengetahui kejadian di sekolah atau hal-hal yang memang harus diketahui orangtua. Misalnya, alat-alat apa yang harus dibawa anak pada hari tertentu, dan sebagainya. Namun sistem komunikasi ini masih bersifat konvensional, dimana guru menulis informasi mengenai kegiatan belajar siswa di communication book yang harus dibawa setiap hari oleh siswa, sehingga jika siswa lupa untuk membawa communication book, maka guru tidak dapat menulis informasi yang akan disampaikan. Sistem informasi ini bertujuan untuk membuat sistem informasi communication book secara online di SD Salman Al Farisi Bandung. Sistem yang dibuat berbasis PHP dan menggunakan MySQL sebagai databasenya. Sistem informasi communication book terdapat menu-menu yang dapat mendukung komunikasi antara guru dan orangtua seperti menu informasi, kegiatan, tugas, ujian, surat panggilan dan lain-lain. Diharapkan dengan penerapan sistem ini di SD Salman Al Farisi Bandung dapat membantu komunikasi secara online dan real time. Sistem informasi ini dimulai dengan merancang hubungan antara database dan proses bisnis yang terjadi di dalam web. Kemudian dilanjutkan dengan desain tampilan dan pembuatan program. Kata Kunci : Web, Php, Mysql, Communication Book. ABSTRACT The Communication book has now become a familiar term among the elementary school students. Some schools have implemented it as a means of communication between teachers and parents. Different the communication book with

  13. PENGEMBANGAN PERANGKAT PEMBELAJARAN MATERI PECAHAN BERBASIS TEORI BRUNER DI KELAS IV SD LABSCHOOL UNESA

    Directory of Open Access Journals (Sweden)

    Lina Wijayanti

    2015-07-01

    Full Text Available Penelitian ini bertujuan untuk menghasilkan perangkat pembelajaran pada materi pecahan tema 3 berbasis teori Bruner ditinjau dari kualitas produk secara umum (kevalidan, kepraktisan, dan keefektifan dan dalam peningkatan kemampuan pemecahan masalah dan prestasi belajar peserta didik di kelas IV SD Labschool Unesa. Penelitian ini termasuk penelitian dan pengembangan yang menggunakan model yang dikembangkan oleh Borg & Gall. Subjek penelitian dalam uji coba terbatas berjumlah 4 siswa, sedangkan dalam uji coba lapangan berjumlah 8 siswa. Subjek uji coba produk operasional pada kelas eksperimen sebanyak 17 siswa dan kelas kontrol sebanyak 18 siswa. Pengumpulan data dalam penelitian ini menggunakan lembar penilaian produk perangkat pembelajaran, lembar observasi guru, lembar observasi peserta didik, tes hasil belajar, angket respon guru, dan agket respon peserta didik. Analisis data menggunakan independent sample t-test dengan taraf signifikansi 0,05. Hasil penelitian menunjukkan bahwa perangkat pembelajaran hasil pengembangan dinyatakan valid dengan kategori sebagai berikut: silabus berkategori baik, RPP berkategori sangat baik, tes hasil belajar berkategori baik, dan media berkategori sangat baik, sehingga rerata hasil semua perangkat pembelajaran adalah berkategori baik. Penerapan perangkat pembelajaran secara umum dapat terlaksana dengan baik. Berdasarkan hasil uji coba kelas eksperimen dan kelas kontrol, terdapat perbedaan yang signifikan pada ketercapaian hasil belajar sehingga perangkat pembelajaran dikatakan efektif, sedangkan untuk kemampuan pemecahan masalah dan prestasi belajar siswa yang mengikuti pembelajaran menggunakan perangkat pembelajaran berbasis teori Bruner hasil pengembangan mengalami peningkatan. Kata Kunci: perangkat pembelajaran, teori Bruner, kemampuan pemecahan masalah, prestasi belajar DEVELOPING TEACHING KIT BASED ON THE THEORY OF BRUNER IN GRADE FOUR STUDENTS OF SD LABSCHOOL UNESA Abstract This study aims to develop a

  14. Study of the (p,α)-reaction on sd-shell nuclei and their microscopic analysis

    International Nuclear Information System (INIS)

    Hoyler, F.

    1982-01-01

    In the present thesis the (p,α) reaction on the 2s-1d-shell nuclei 23 Na, 24 Mg, 26 Mg, 27 Al, 35 Cl, 37 Cl, and 39 K was measured. The experiments were performed at the isochronous cyclotron JULIC of the Institute for Nuclear Physics of the Nuclear Research Facility Juelich and at the Emperor Van-de-Graaff accelerator of the Max Planck Institute for Nuclear Physics Heidelberg. Angular distributions for transitions to several residual nucleus states were evaluated in the energy range between 18 and 45 MeV incident proton energy. By the application of magnetic spectrometers as detection device an energy resolution between 25 and 45 keV could be reached. (orig./HSI) [de

  15. Clinical, hematological and genetic data of a cohort of children with hemoglobin SD

    Directory of Open Access Journals (Sweden)

    Paulo do Val Rezende

    Full Text Available ABSTRACT INTRODUCTION: The hemoglobin FSD is very uncommon in newborn screening programs for sickle cell disease. In the program of Minas Gerais, Brazil, the clinical course of children with hemoglobin SD was observed to be heterogeneous. The objective of this study was to estimate the incidence (1999-2012 and to describe the natural history of a cohort of newborns with hemoglobin SD. METHODS: Isoelectric focusing was the primary method used in newborn screening. Polymerase chain reaction-restriction fragment length polymorphism and gene sequencing were used to identify mutant alleles and for haplotyping. Gap-polymerase chain reaction was used to detect alpha-thalassemia. RESULTS: Eleven cases of hemoglobin S/D-Punjab and eight of Hb S-Korle Bu were detected. Other variants with hemoglobin D mobility were not identified. All hemoglobin D-Punjab and hemoglobin Korle Bu alleles were associated with haplotype I. Among the children with hemoglobin S/D-Punjab, there were four with the ßS CAR haplotype, six with the Benin haplotype, and one atypical. Results of laboratory tests for hemoglobin S/D-Punjab and hemoglobin S-Korle Bu were: hemoglobin 8.0 and 12.3 g/dL (p-value <0.001, leukocyte count 13.9 × 109/L and 10.5 × 109/L (p-value = 0.003, reticulocytes 7.5% and 1.0% (p-value <0.001, hemoglobin F concentration 16.1% and 6.9% (p-value = 0.001 and oxygen saturation 91.9% and 97% (p-value = 0.002, respectively. Only hemoglobin S/D-Punjab children had acute pain crises and needed blood transfusions or hydroxyurea. Those with the Benin ßS haplotype had higher total hemoglobin and hemoglobin F concentrations compared to the CAR haplotype. Transcranial Doppler was normal in all children. CONCLUSION: The clinical course and blood cell counts of children with hemoglobin S/D-Punjab were very similar to those of hemoglobin SS children. In contrast, children with hemoglobin S-Korle Bu had clinical course and blood cell counts like children with the sickle

  16. DESCRIPTION OF THE NUTRITIONAL STATUS OF STUDENTS IN SD NEGERI 3 PELIATAN, SUBDISTRICT UBUD, GIANYAR

    Directory of Open Access Journals (Sweden)

    Ayu Indah Hapsari

    2013-10-01

    Full Text Available Normal 0 false false false EN-US X-NONE X-NONE Elementary school student are the group of student that potentialy having problem with nutrition due to their eating patern and development status. The cases of malnutrition in Ubud is still highly noted even if Ubud is kown as well-developed subdistrict. The aimed of the study is to descript the nutritional status and other factors related to among the students of SD Negeri 3 Peliatan, Subdistrict Ubud, Gianyar. This study was done on August 19th 2011 until August 20th 2011 and the study design was a cross-sectional. Subjects were the grade 5th and 6th students with a total of 70 student, were chosen by quota sampling technique. Every subject was asked to administer questionnaire, to get the informaton on characteristic, eating pattern and breakfast habit. Antropometric measurements were done to gain the nutritional status of sampel. History of low birth weight was collected from the parents through administering self-administered questionnaires. The data was analysed descriptively. Result showed that subjects tend to have high malnutrition cases, in whom 25.7% were undernutrition and 24.3% were overnutrition 24.3%. Majority of subjects who have good nutritional status were those who admitted to have balanced eating pattern and breakfast habit. In addition, subjects with good nutrition status tended to have good academic scores and those with history of low birth weight seemed to have good and over nutritional status. As the students of SD Negeri 3 Peliatan seemed to have remarkable problem of malnutrition, it is suggested to inform their parents regarding the best eating pattern and to emphasize the importance of berakfast habit to achieve and maintain the good nutritional status for their children. /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso

  17. PEMBERDAYAAN ANAK SD DALAM UPAYA PENINGKATAN KONSUMSI GARAM BERYODIUM DI DESA APUAN KECAMATAN SUSUT KABUPATEN BANGLI

    Directory of Open Access Journals (Sweden)

    Tresna Adhi K

    2012-10-01

    Full Text Available Iodine deficiency disorder (IDD is the most single common cause of preventable mental retardation and brain damage in the world. It decreases child survival, causes goiters, and impairs growth and development. Apuan Village, Bangli Regency is categorized as endemic areas (TGR=20,3% according to the definition from Health Office reports of Bali Province in 2008. One of the approaches that might be worth considering in alleviating the problem is the empowerment of elementary school children in an effort to increase the consumption of iodized salt in household. This approach aimed at empowering children to provide information to their parents on iodized salt consumption. Community services activities were conducted from December 16 to 21 October 2010 in SD 1 and SD 3 Apuan involving 62 elementary school children. The main activities were the provision of knowledge and guidance to elementary school children about the benefits of iodized salt. The first phase of the activities consists of examining the level of iodine in salt. This phase was then followed by giving the students a pre-test prior to the guidance and a post-test after the guidance for measuring the level of improvement on knowledge of elementary school children about iodized salt. The second phase was conducted one week after the first phase by measuring the level of iodine in the household salt of the same respondents. Data were analyzed using descriptive and analytical by computer program. Results pre-test and post-tests showed an increase in the knowledge for good knowledge category (0% to 31%, and moderate knowledge category (3.2% to 40.3% and while a decrease in the limited knowledge category (96.8% to 9.7%. Statistical analysis showed significant differences (p <0.05. Test results that contain iodine salt showed increased percentage of 72.6% in the first phase to 96.7% in the second phase. It can be concluded that elementary school children might become a good initiator to improve

  18. Proses Berpikir Siswa SD dalam Melakukan Estimasi Masalah Berhitung Berdasarkan Jenis Kelamin

    Directory of Open Access Journals (Sweden)

    Muh. Rizal

    2013-01-01

    Full Text Available Abstract: The Thinking Process of Primary-school Students of Different Sexes in Estimating Arithmetic Problems. This case study is intended to explore the thinking process of the fifth-year students of different sexes in estimating arithmetic problems. Two students, one male and one female, belonging to the high achievers in a mathematics test were selected for the study and then interviewed, assigned to solve arithmetic problems, and finally asked to think aloud their thinking process. The study reveals that the thinking process of both the male and female subjects is in the form of accommodation as they ap­proached the arithmetic problems by repeatedly reading the tasks. Though employing the same thinking process, in the planning stage, the male subject made use of rounding and compatible number strategies, whereas the female one used only rounding strategy. In implementing the plan, the male subject em­ployed mental counting through assimilation, but the female one used algorithm through accommoda­tion. In the evaluating stage, the male subject traced back his work through mental counting, while the female one utilized reverse operations. Abstrak: Proses Berpikir Siswa SD dalam Melakukan Estimasi Masalah Berhitung Berdasarkan Jenis Kelamin. Penelitian ini ingin mendeskripsikan proses berpikir siswa laki-laki dan perempuan yang berkemampuan matematika tinggi dalam melakukan estimasi. Penelitian dilakukan di kelas V SD, dengan subjek satu siswa laki-laki dan satu siswa perempuan yang memiliki skor 75 ke atas dalam tes kemampuan matematika. Data dikumpulkan dengan wawancara, pemberian tes dan think aloud. Analisis dilakukan dengan menelaah seluruh data, reduksi data, pengolompokan data, kategorisasi, pengkodean, dan pemeriksaan kredibilitas data dengan triangulasi waktu. Hasil penelitian menunjukkan bahwa proses berpikir keduanya adalah akomodasi. Dalam membuat rencana, laki-laki menggunakan rounding dan compatible number strategy, sedangkan

  19. EVALUASI PEMBELAJARAN ANAK BERKEBUTUHAN KHUSUS (ABK DI KELAS INKLUSIF DI SD PLUS DARUL 'ULUM JOMBANG

    Directory of Open Access Journals (Sweden)

    Lilik Maftuhatin

    2014-10-01

    Full Text Available Penelitian ini dilatarbelakangi permasalahan belum ada standar evaluasi pembelajaran yang pasti untuk anak yang memiliki kelebihan dan kekurangan, walaupun mereka mendapat pelayanan pendidikan di kelas inklusif. Karena itu penelitian ini bertujuan untuk mencari solusi pemecahan masalah bagaimana sistem perencanaan evaluasi pembelajaran, bentuk evaluasi, bentuk pelaporan hasil evaluasi yang terdapat di kelas inklusif. Penelitian ini difokuskan pada  perencanaan evaluasi pembelajaran, bentuk evaluasi yang dilakukan, dan bentuk laporan evaluasi yang telah dilakukan di kelas inklusif yang terdapat di SD Plus Darul Ulum. Penelitian ini dilakukan dengan metode interview,observasi dan dokumentasi. Obyek penelitian adalah kepala sekolah, guru-guru pendamping ABK, serta koordinator kelas inklusi disertai dengan data-data di lapangan yang dapat mendukung penelitian ini. Hasil penelitian menyimpulkan bahwa evaluasi pembelajaran sudah cukup bagus karena guru sudah menerapkan dua metode dalam evaluasi yaitu dengan soal yang disamakan dengan reguler dan yang kedua dengan soal sesuai dengan kebutuhan mereka, disertai dengan portofolio yang mencatat perkembangan mereka selama pembelajaran.This research is based on the lack of learning evaluation standard  for the children with special education need. It is based on the fact that inclusive class for them has no evaluation standard yet. Therefore, the research was used to figure out; the problem, method and the form of learning evaluation planning system. It also used to find out the result report form of learning evaluation at inclusive class, SD Plus  Darul Ulum. The focus of the research were the problem, method and the form of learning evaluation planning system. This research was done by interviewing, observation and documentation. Meanwhile the targets of the research were teachers for children with special needs, inclusion class coordinator and the supporting data.Based on the research, it can be

  20. Measurements of (p,γ) resonance strengths in the s-d shell

    NARCIS (Netherlands)

    Engelbertink, G.A.P.; Endt, P.M.

    1966-01-01

    Resonace strengths of selected resonances in the Ep=0.3−2.1 MeV region in the (p, γ) reactions on 23Na, 24–24Mg, 27Al, 28–30Si, 31P, 32, 34S, 35, 37Cl, 39, 41K and 40Ca are compared through relative yield measurements, using targets of many different chemical compounds, each containing at least two

  1. 77 FR 27417 - Foreign-Trade Zone 220-Sioux Falls, SD; Notification of Proposed Production Activity, Rosenbauer...

    Science.gov (United States)

    2012-05-10

    ... is used for the production of emergency vehicles and firefighting equipment (pumps, tankers, rescue... drives, DC motors, static converters, rechargeable flashlights, flashlight parts, electrical foam..., LLC, (Emergency Vehicles/Firefighting Equipment), Lyons, SD The Sioux Falls Development Foundation...

  2. The Implications for the Royal Marines Command (RMC) of Operational Manoeuvre From the Sea (OMFTS) and Sea Dragon (SD)

    National Research Council Canada - National Science Library

    Maynard, A. T

    1997-01-01

    .... The United States Marine Corps, as part of a United States initiative, is developing OMFTS, a new amphibious power projection strategy, and has established SD, an experimental process to test its new...

  3. Probing the N = 14 subshell closure: g factor of the 26Mg (21+) state

    Science.gov (United States)

    McCormick, B. P.; Stuchbery, A. E.; Kibédi, T.; Lane, G. J.; Reed, M. W.; Eriksen, T. K.; Hota, S. S.; Lee, B. Q.; Palalani, N.

    2018-04-01

    The first-excited state g factor of 26Mg has been measured relative to the g factor of the 24Mg (21+) state using the high-velocity transient-field technique, giving g = + 0.86 ± 0.10. This new measurement is in strong disagreement with the currently adopted value, but in agreement with the sd-shell model using the USDB interaction. The newly measured g factor, along with E (21+) and B (E 2) systematics, signal the closure of the νd5/2 subshell at N = 14. The possibility that precise g-factor measurements may indicate the onset of neutron pf admixtures in first-excited state even-even magnesium isotopes below 32Mg is discussed and the importance of precise excited-state g-factor measurements on sd shell nuclei with N ≠ Z to test shell-model wavefunctions is noted.

  4. Nuclear ground state properties and self-consistent calculations with the Skyrme interaction. II. S-D shell nuclei

    International Nuclear Information System (INIS)

    Flocard, H.

    1975-04-01

    Hartree-Fock results concerning the ground state properties of some S-D shell nuclei are discussed. Two different Skyrme interactions have been used. They both lead to good agreement with the experimental total binding energies, charge radii and multipole moments. In particular the observed prolate-oblate transitions occuring in the S-D shell are reproduced. The calculated spectroscopic factors are also shown to be consistent with experimental data [fr

  5. New Pulse Timing Measurements of the sdBV Star CS 1246

    Directory of Open Access Journals (Sweden)

    Hutchens Zackary L.

    2017-12-01

    Full Text Available CS 1246 is a hot subdwarf B star discovered in 2009 to exhibit a single, large-amplitude radial pulsation. An O-C diagram constructed from this mode revealed reflex motion due to the presence of a low-mass M dwarf, as well as a long-term trend consistent with a decrease in the pulsational period. The orbital reflex motion was later confirmed with radial velocity measurements. Using eight years of data collected with the Skynet Robotic Telescope Network, we show that the pulsation amplitude of CS 1246 is decaying nonlinearly. We also present an updated O-C diagram, which might now indicate a positive Ṗ and a new 2.09 ± 0.05 yr oscillation consistent with orbital reflex motion of the entire inner sdB+dM binary, possibly due to the gravitational influence of a circumbinary planet with minimum mass . However, unlike the presence of the M dwarf, we hesistate to claim this object as a definitive detection since intrinsic variability of the pulsation phase could theoretically produce a similar effect.

  6. PELAKSANAAN PEMBELAJARAN BAHASA MELAYU DI SD AMANASAK KABUPATEN MUANG PATTANI THAILAND SELATAN

    Directory of Open Access Journals (Sweden)

    Hasuenah Dumeedae

    2013-01-01

    Full Text Available Penelitian ini bertujuan untuk mengungkap pelaksanaan proses pembelajaran bahasa Melayu di SD Amanasak Kabupaten Muang Pattani Thailand Selatan, meliputi pendekatan, metode, strategi tek-nik dan media pembelajaran, interaksi guru dan siswa, serta peran guru, siswa, dan materi. Penelitian ini menggunakan metode penelitian kualitatif. Subjek adalah guru, para siswa dan wakil kepala seko-lah, objek adalah pelaksanaan pembelajaran bahasa Melayu di lembaga tersebut. Teknik pengumpulan data adalah observasi berpartisipasi, wawancara, dan studi dokumentasi. Hasil penelitian ini menun-jukkan bahwa pendekatan, metode, strategi dan teknik pembelajaran yang digunakan cukup membuat siswa antusias untuk mempelajari bahasa Melayu. Media pembelajaran yang digunakan dalam labora-torium telah digunakan dengan maksimal, namun tidak sering digunakan. Interaksi guru dan siswa berjalan dengan baik, meskipun belum seluruhnya menggunakan bahasa Melayu dan bahkan penggu-naan bahasa Thai masih lebih banyak daripada bahasa Melayu. Guru telah menjalani tugasnya sebagai fasilitator, perencana, dan pengontrol dengan baik. Siswa telah diberi kesempatan untuk mencari sum-ber belajar tambahan, sementara materi yang ada cukup membuat siswa bersemangat mengikuti pem-belajaran. Pengelolaan kelas dalam belajar mengajar sudah meningkatkan hasil pembelajaran dengan efektif, dan efisien. Evaluasi proses pelajaran menggunakan tes berbahasa dari membaca, berbicara, menyimak dan menulis. Alat evaluasi sudah sesuai dengan rencana pelaksanaan pembelajaran dan kemampuan siswa yang berhubungan dengan aspek kognitif, sosial, afektif, dan personal. Pengukur ini sudah mencakup materi dan keterampilan berbahasa siswa. Kata kunci: bahasa Melayu, pelaksanaan pembelajaran

  7. De weg van Vlaamse 'daders' naar de Gestapo. De tolken van de Antwerpse Sipo-SD

    Directory of Open Access Journals (Sweden)

    Robby Van Eetvelde

    2009-01-01

    Full Text Available Flemish Collaborators and their Route to the Gestapo. The Translators of the Sipo-SD in AntwerpDuring the Second World War, Nazi-Germany used the Geheime Staatspolizei (Gestapo in its occupied territories and at the home front to maintain order and execute the racial policy of the regime. With a head office in Brussels and branches in Antwerp, Ghent, Liège and Charleroi, the Gestapo was also present in military occupied Belgium. The German agents were not completely up to their task. They lacked the knowledge of the regional languages and circumstances. The help of the local Belgian populace was therefore a necessity. What motivated these men to collaborate so assiduously with the German occupier? This research is based on the postwar criminal case files, compiled by the military courts in the context of the prosecution of those who collaborated. Several biographies of Flemish collaborators with the Gestapo office in Antwerp have been reconstructed. In this way, four major motivational groups can be distinguished: opportunists, ideological perpetrators, ‘traditional’ collaborators and former members of the resistance. Contrary to existing research into similar groups of men, financial or material gain was not their primary motive. Various psychological factors played a greater role.

  8. Designing laboratory activities in elementary school oriented to scientific approach for teachers SD-Kreatif Bojonegoro

    Science.gov (United States)

    Dwikoranto; Surasmi, W. A.; Suparto, A.; Tresnaningsih, S.; Sambada, D.; Setyowati, T.; Faqih, A.; Setiani, R.

    2018-03-01

    Important science lessons are introduced to elementary school students through inquiry. This training is important to do because one key determinant of succesful laboratory activities is teachers. This course aims to enable teachers to design an inquiry-based Laboratory Activity and be able to apply it in the classroom. The training was conducted at SD-Kreatif Bojonegoro by Modeling, Design Laboratory activities and Implementing. The results of Laboratory Activities designed to trace the seven aspects that can support the development of inquiry skills in either category. The teacher's response in this activity is positive. The conclusion of this training can improve the ability of teachers in designing and implementing laboratory activities of Science and then expected to positively affect the frequency of science laboratory activities. Usually teachers use learning by using this Laboratory Activity, it will be affected on the pattern of inquiry behavior to the students as well so that will achieve the expected goals. Teachers are expected to continue for other topics, even for other similarly characterized subjects. This habitation is important so that the teacher's skill in making Laboratory Activity continues to be well honed and useful for the students.

  9. DESAIN MATERI BANGUN DATAR MENGGUNAKAN ORIGAMI BERKONTEKS TANGRAM DI SD KELAS II

    Directory of Open Access Journals (Sweden)

    Lisnani Lisnani

    2017-05-01

    Full Text Available ABSTRACT. The study aims to improve the ability of mathematical communication in recognizing, grouping various types of flat wake. The subjects of the study were elementary school students Class IIA in SD Negeri 43 Palembang amounted to 27 people. Data collection is done through observation sheets, interviews, tests, documentation, and field notes. The research method used is a research design consisting of three stages: First stage, preliminary design / preparing for the experiment; The second stage, design experiment consisting of pilot and teaching experiment. The third stage, retrospective analysis. This study develops a series of activities and strategies that learners do on a flat wake material. The results of this study in the form of learning trajectory (learning path in each activity are: First activity, learners recognize various shapes and characteristics of wake up flat with conventional way. Then, on the second activity, learners can recognize the types and characteristics of the wake up trained by using the model match a make. Furthermore, the third activity, enhances its mathematical communication ability by using origang tangram context. Keywords : Design research, mathematical communication, make a match, origami

  10. PEMBELAJARAN SAINS SD UNTUK SISWA TUNANETRA DI SLB-A YAKETUNIS

    Directory of Open Access Journals (Sweden)

    Aprilia Eki Saputri

    2013-07-01

    Full Text Available Penelitian ini bertujuan untuk mendeskripsikan pelaksanaan pembelajaran sains SD di SLB-A Yaketunis. Penelitian ini menggunakan pendekatan kualitatif dengan jenis penelitian etnografi kelas. Data dianalisis menggunakan analisis data Miles dan Huberman yaitu: reduksi, penyajian, dan verifikasi data. Hasil penelitian menunjukkan bahwa pembelajaran sains di SLB-A Yaketunis diawali dengan analisis kebutuhan siswa. Materi pembelajaran yang dapat diwujudkan dalam bentuk konkrit dan media pembelajaran tersedia atau dapat disediakan guru, maka indera perabaanlah yang dimaksimalkan oleh guru. Sedangkan materi pembelajaran yang tidak dapat diwujudkan dalam bentuk konkrit, hanya diampaikan dengan memanfaatkan komunikasi verbal yang bersifat kontekstual. Budaya kelas di dalam pembelajaran sains di SLB-A Yaketunis adalah menumbuhkan rasa ingin tahu siswa terhadap fenomena-fenomena yang ada di alam semesta, pemanfaatan indera perabaan, dan pendengaran siswa di dalam belajar sains. Budaya tersebut dikembangkan dan dimanfaatkan sepanjang pembelajaran sains agar siswa menguasai keterampilan proses sains dasar (observasi, klasifikasi, mengukur, komunikasi, prediksi, dan inferensi untuk mempelajari fakta, konsep, prinsip, dan teori dalam mata pelajaran sains. Kata kunci: pembelajaran sains dan siswa tunanetra.

  11. Dynamic assessment for life extension of nuclear power plants (NPPs) using system dynamics (SD) method

    International Nuclear Information System (INIS)

    Woo, Tae Ho

    2012-01-01

    It has been proposed to extend the life of nuclear power plants (NPPs) for the economic purpose. Especially, the primary systems in reactor are considered in the thermohydraulic and neutronic aspect, which is related to the safety system. The electric power and the lifespan of components are expressed as economic situation. In addition, political considerations are given by the presidential change and the nuclear non-proliferation characteristics. The dynamical investigation using system dynamics (SD) shows the effective time for the life extension of the NPPs by Monte-Carlo simulations. This non-linear algorithm is incorporated with the feedback loop of the event sequences. The expected event is related to the past event, which affects to the dynamical simulations of lifetime in the NPPs. In the conclusions, the safety guarantee as well as the economic profit in the re-use of long term operated power plants is presented, which is mentioned as the transient time between 2019 and 2021 in this paper. (orig.)

  12. PROBLEMATIKA PEMBELAJARAN BAHASA INDONESIA DI MI/SD DAN ALTERNATIF PEMECAHANNYA

    Directory of Open Access Journals (Sweden)

    Yuentie Sova Puspidalia

    2012-06-01

    Full Text Available Abstract: The ultimate goal of Indonesian teaching is to help learners able to integrate themselves into the society successfully. This aim is in line with the development of science and technology in the globalization era, in which the role of the Indonesian language as a mean of personal development is inevitably challenged by the rapid changes and the need of international languages. For this reason, it is worried that learners face any negative wash back of the existence of International language, in instance, the lost of their own identity. To this end, the role of Indonesian teaching is getting more and more obviously important. In reality, however, the Indonesian teaching is generally assumed as the easiest subject if it is compared with other subjects. As a result of this case, learners pretend not to learn Indonesian seriously. Ironically, many students get low grade although the Indonesian lesson is seen easily to learn. In fact, elementary school (SD/MI is regarded as basis for the formation of the noble values of the nation. The study had identified several sources of problems in learning Indonesian both from the educators or learners. Besides, it was revealed that the result of learning was affected by some aspects, such as the goals, materials, methods, school facilities and infrastructure.

  13. PENGELOLAAN AKREDITASI SEKOLAH (STUDI SITUS SD NEGERI 2 MRANTI KECAMATAN PURWOREJO KABUPATEN PURWOREJO

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    Supriyatno Supriyatno

    2015-07-01

    Full Text Available The onjectives of this research are to describe (1 the preparation of school self-evaluation in improving school accreditation; (2 The visitation in improving school accreditation; (3 The results of school accreditation. The type of the research is qualitative and uses ethnography design. The site of the study is SD Negeri 2 Mranti Purworejo District, Purworejo. Techniques for collecting data used are interviews, observations, and documentation. The results of this research are as follows: (1 Preparation of school self-evaluation is conducted by a special team formed by the principal. The preparation done before the new school year, it takes place by collecting data from the SNP. EDS is consisting of EDS instrument and the physical evidence for each item SNP. The preparation is conducted byhaving a checklist for each item in the SNPs form that describes the real condition of the school; (2 the visitation process in improving schools accreditation runs smoothly and according to the procedure. The process begins with the submission of the letter that comes with the implementation of the accreditation document to School Accreditation Association (BAS of district; (3 the accreditation result increases from 79 in 2005 to 86.81 in 2010.

  14. PENGEMBANGAN BUKU PENGAYAAN APRESIASI DONGENG YANG BERMUATAN CLIL BAGI PESERTA DIDIK SD KELAS TIGA

    Directory of Open Access Journals (Sweden)

    Meina Febriani

    2015-08-01

    Full Text Available Salah satu cara membelajarkan muatan budaya dan ilmu pengetahuan yakni dengan kegiatan apresiasi dongeng. Dongeng sebagai salah satu karya sastra memiliki potensi untuk menghela muatan Content Language Integrated Learning (CLIL dan ungkapan Jawa. Setelah mempelajari buku-buku apresiasi dongeng yang sudah ada, ditemukan fakta bahwa buku-buku tersebut masih belum sesuai harapan, baik dari aspek isi, penyajian, bahasa dan keterbacaan, maupun grafika. Relevan dengan situasi tersebut, diperlukan buku pengayaan apresiasi dongeng yang bermuatan CLIL yang sesuai bagi peserta didik SD kelas 3, baik dari aspek isi, penyajian, bahasa dan keterbacaan, maupun grafika. Metode yang digunakan dalam penelitian ini adalah Research andDevelopment (penelitian dan pengembangan dari Borg dan Gall. One way to learn culture and science that is the fabled appreciation activities. Fairy tale as one of the literary works have the potential to haul cargo Content Language Integrated Learning (CLIL and Java expression. After studying the books offairy tale sexisting appreciation, it was found that these books is not as expected, both from the aspect of content, presentation, language and readability, and graphics. Relevant to the situation, necessary book-laden fairy tale appreciation enrichment CLIL suitable for grade 3 students, both fromthe aspect of content, presentation, language and readability, and graphics. The method used in this study is the research and development (research and development of the Borg and Gall.

  15. Spectrum of {gamma} rays from the decay of SD to normal states in {sup 191}Hg

    Energy Technology Data Exchange (ETDEWEB)

    Gassmann, D.; Khoo, T.L.; Lauritsen, T. [and others

    1995-08-01

    In B.a.7. we propose that the statistical spectrum emitted from a sharp single excited state serves as a probe of pairing in excited states. A specific test of this proposal is the comparison of the spectra from even-even and odd-even nuclei. Whereas a pair gap exists in an even-even nucleus, it gets filled in an odd-even nucleus. Consequently, low-energy transitions can arise in the latter case, whereas they are calculated to be absent in the former case because very few levels exist in the cold gap region. In addition, transitions between 1.4 - 2.2 MeV, which {open_quotes}jump{close_quotes} across the gap, are predicted to have lower yield in the odd-even nuclei. Serendipitously, decay from a superdeformed state serves as a good initial excited sharp state. We extracted the spectrum pairwise-coincident with SD lines in {sup 191}Hg from Gammasphere data and compared it with the equivalent spectra from the even-even nuclei {sup 192,194}Hg. The differences that are predicted to occur are indeed observed. Thus, the data support our proposal that the reduction of pairing with thermal excitation energy can be probed with statistical decay spectra.

  16. Dynamic assessment for life extension of nuclear power plants (NPPs) using system dynamics (SD) method

    Energy Technology Data Exchange (ETDEWEB)

    Woo, Tae Ho [Seoul National Univ. (Korea, Republic of). Dept. of Nuclear Engineering

    2012-12-15

    It has been proposed to extend the life of nuclear power plants (NPPs) for the economic purpose. Especially, the primary systems in reactor are considered in the thermohydraulic and neutronic aspect, which is related to the safety system. The electric power and the lifespan of components are expressed as economic situation. In addition, political considerations are given by the presidential change and the nuclear non-proliferation characteristics. The dynamical investigation using system dynamics (SD) shows the effective time for the life extension of the NPPs by Monte-Carlo simulations. This non-linear algorithm is incorporated with the feedback loop of the event sequences. The expected event is related to the past event, which affects to the dynamical simulations of lifetime in the NPPs. In the conclusions, the safety guarantee as well as the economic profit in the re-use of long term operated power plants is presented, which is mentioned as the transient time between 2019 and 2021 in this paper. (orig.)

  17. Scanning PIV investigation of the laminar separation bubble on a SD7003 airfoil

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Wei [Technische Universitaet Braunschweig, Institut fuer Stroemungsmechanik, Braunschweig (Germany); Iowa State University, Department of Aerospace Engineering, Ames, IA (United States); Hain, Rainer [Technische Universitaet Braunschweig, Institut fuer Stroemungsmechanik, Braunschweig (Germany); Institut fuer Aerodynamik und Stroemungstechnik, Deutsches Zentrum fuer Luft- und Raumfahrt e.V. (DLR), Braunschweig (Germany); Kaehler, Christian J. [Technische Universitaet Braunschweig, Institut fuer Stroemungsmechanik, Braunschweig (Germany); Universitaet der Bundeswehr Muenchen, Institut fuer Stroemungsmechanik und Aerodynamik, Neubiberg (Germany)

    2008-10-15

    A laminar separation bubble occurs on the suction side of the SD7003 airfoil at an angle of attack {alpha}=4-8 and a low Reynolds number less than 100,000, which brings about a significant adverse aerodynamic effect. The spatial and temporal structure of the laminar separation bubble was studied using the scanning PIV method at {alpha}=4 and Re=60,000 and 20,000. Of particular interest are the dynamic vortex behavior in transition process and the subsequent vortex evolution in the turbulent boundary layer. The flow was continuously sampled in a stack of parallel illuminated planes from two orthogonal views with a frequency of hundreds Hz, and PIV cross-correlation was performed to obtain the 2D velocity field in each plane. Results of both the single-sliced and the volumetric presentations of the laminar separation bubble reveal vortex shedding in transition near the reattachment region at Re=60,000. In a relatively long distance vortices characterized by paired wall-normal vorticity packets retain their identities in the reattached turbulent boundary layer, though vortices interact through tearing, stretching and tilting. Compared with the restricted LSB at Re=60,000, the flow at Re=20,000 presents an earlier separation and a significantly increased reversed flow region followed by ''huge'' vortical structures. (orig.)

  18. Important operational parameters of membrane bioreactor-sludge disintegration (MBR-SD) system for zero excess sludge production.

    Science.gov (United States)

    Yoon, Seong-Hoon

    2003-04-01

    In order to prevent excess sludge production during wastewater treatment, a membrane bioreactor-sludge disintegration (MBR-SD) system has been introduced, where the disintegrated sludge is recycled to the bioreactor as a feed solution. In this study, a mathematical model was developed by incorporating a sludge disintegration term into the conventional activated sludge model and the relationships among the operational parameters were investigated. A new definition of F/M ratio for the MBR-SD system was suggested to evaluate the actual organic loading rate. The actual F/M ratio was expected to be much higher than the apparent F/M ratio in MBR-SD. The kinetic parameters concerning the biodegradability of organics hardly affect the system performance. Instead, sludge solubilization ratio (alpha) in the SD process and particulate hydrolysis rate constant (k(h)) in biological reaction determine the sludge disintegration number (SDN), which is related with the overall economics of the MBR-SD system. Under reasonable alpha and k(h) values, SDN would range between 3 and 5 which means the amount of sludge required to be disintegrated would be 3-5 times higher for preventing a particular amount of sludge production. Finally, normalized sludge disintegration rate (q/V) which is needed to maintain a certain level of MLSS in the MBR-SD system was calculated as a function of F/V ratio.

  19. Molecular Weight Dependent Glucose Lowering Effect of Low Molecular Weight Chitosan Oligosaccharide (GO2KA1 on Postprandial Blood Glucose Level in SD Rats Model

    Directory of Open Access Journals (Sweden)

    Emmanouil Apostolidis

    2013-07-01

    Full Text Available This research investigated the effect of enzymatically digested low molecular weight (MW chitosan oligosaccharide on type 2 diabetes prevention. Three different chitosan oligosaccharide samples with varying MW were evaluated in vitro for inhibition of rat small intestinal α-glucosidase and porcine pancreatic α-amylase (GO2KA1; 10,000 Da. The in vitro results showed that all tested samples had similar rat α-glucosidase inhibitory and porcine α-amylase inhibitory activity. Based on these observations, we decided to further investigate the effect of all three samples at a dose of 0.1 g/kg, on reducing postprandial blood glucose levels in Sprague-Dawley (SD rat model after sucrose loading test. In the animal trial, all tested samples had postprandial blood glucose reduction effect, when compared to control, however GO2KA1 supplementation had the strongest effect. The glucose peak (Cmax for GO2KA1 and control was 152 mg/dL and 193 mg/dL, respectively. The area under the blood glucose-time curve (AUC for GO2KA1 and control was 262 h mg/dL and 305 h mg/dL, respectively. Furthermore, the time of peak plasma concentration of blood glucose (Tmax for GO2KA1 was significantly delayed (0.9 h compared to control (0.5 h. These results suggest that GO2KA1 could have a beneficial effect for blood glucose management relevant to diabetes prevention in normal and pre-diabetic individuals. The suggested mechanism of action is via inhibition of the carbohydrate hydrolysis enzyme α-glucosidase and since GO2KA1 (MW < 1000 Da had higher in vivo effect, we hypothesize that it is more readily absorbed and might exert further biological effect once it is absorbed in the blood stream, relevant to blood glucose management.

  20. Microscopic boson approach to the description of sd-shell nuclei

    International Nuclear Information System (INIS)

    Kuchta, R.

    1987-01-01

    A microscopic method is proposed for analyzing the properties of light nuclei with an equal number of protons and neutrons in terms of many interacting bosons. An exact boson image of the underlying shell-model Hamiltonian is derived and the dynamical behaviour of the original fermion system is studied directly in the boson picture using the mean field approximation. The resulting boson states are shown to be free from spurios components, so that the cubersome procedure of constructing the physical boson states can be avoided. The method is applied to calculating the energy spectra of 20 Ne, 24 Mg and a satisfactory agreement with experimental data is found

  1. Hubungan Konsumsi Junk Food dengan Status Gizi Lebih pada Siswa SD Pertiwi 2 Padang

    Directory of Open Access Journals (Sweden)

    Rizki Nur Amalia

    2016-01-01

    Full Text Available AbstrakGizi lebih adalah keadaan tubuh seseorang yang mengalami berat badan berlebih karena kelebihan jumlah asupan energi yang disimpan dalam bentuk cadangan berupa lemak. Prevalensi gizi lebih pada anak di Indonesia mencapai 10,4. Salah satu faktor risiko terjadinya gizi lebih adalah kebiasaan mengonsumsi junk food. Tujuan penelitian ini adalah menentukan hubungan antara konsumsi junk food dengan status gizi lebih pada anak usia sekolah. Penelitian ini adalah penelitian analitik dengan rancangan cross sectional terhadap populasi penelitian yaitu siswa kelas 1 – 5 di SD Pertiwi 2 Padang sebanyak 250 siswa. Teknik pengambilan data dilakukan dengan menggunakan kuesioner semi kuantitatif FFQ.  Status gizi ditentukan dengan pengukuran berat badan dan tinggi badan yang hasilnya dikategorikan menggunakan standar antropometri penilaian status gizi anak menurut Depkes Indonesia. Pada hasil penelitian didapatkan bahwa siswa yang memiliki status gizi lebih hanya 23,6% dengan rata – rata IMT 16,9±3,69. Rata – rata frekuensi konsumsi junk food 4,6±2,9 kali per hari dan rata – rata asupan energi junk food 1046,5±918,4 kkal per hari. Kesimpulan penelitian ini adalah terdapat hubungan yang bermakna antara konsumsi frekuensi konsumsi junk food dengan kejadian gizi lebih (p = 0,013 dan tidak terdapat hubungan yang bermakna antara asupan energi junk food dengan kejadian gizi lebih (p = 0,120.Kata kunci: gizi lebih, junk food, FFQ AbstractOverweight is a condition of an individual who suffer from excessive weight due to an excess of energy intake stored in fat tissue. Prevalence of overweight in children in Indonesia reaches 10,4 %. One of the risk factors contributing to this condition is consuming junk food. The objective of this study was to identify the relationship of junk food consumption and overweight in students. This research is an analytic study conducted in a cross sectional design using 250  students of class 1-5 in SD Pertiwi 2 Padang

  2. Stable, geochemically mediated biospheres in the Deep Mine Microbial Observatory, SD, USA

    Science.gov (United States)

    Osburn, M. R.; Casar, C. P.; Kruger, B.; Flynn, T. M.

    2017-12-01

    The terrestrial subsurface is a vast reservoir of life, hosting diverse microbial ecosystems with varying levels of connectivity to surface inputs. Understanding long term ecosystem dynamics within the subsurface biosphere is very challenging due to limitations in accessibility, sample availability, and slow microbial growth rates. The establishment of the Deep Mine Microbial Observatory (DeMMO) at the Sanford Underground Research Facility, SD, USA has allowed for bimonthly sampling for nearly two years at six sites spanning 250 to 1500 m below the surface. Here we present a time-resolved analysis of the geomicrobiology of the six DeMMO sites, which have been created from legacy mine boreholes modified to allow for controlled sampling. Our interdisciplinary approach includes analysis of passively draining fracture fluid for aqueous and gas geochemistry, DNA sequencing, microscopy, and isotopic measurements of organic and inorganic substrates. Fluid geochemistry varies significantly between sites, but is relatively stable over time for a given site, even through significant external perturbations such as drilling and installation of permanent sampling devices into the boreholes. The fluid-hosted microbial diversity follows these trends, with consistent populations present at each site through time, even through drilling events. For instance, the shallowest site (DeMMO 1) consistently hosts >30% uncharacterized phyla and >25% Omnitrophica whereas the deepest site (DeMMO 6) is dominated by Firmicutes and Bacterioidetes. Microbial diversity appears to respond to the availability of energy sources such as organic carbon, sulfate, sulfide, hydrogen, and iron. Carbon isotopic measurements reveal closed system behavior with significant recycling of organic carbon into the DIC pool. Together these observations suggest DeMMO hosts isolated subsurface microbial populations adapted to local geochemistry that are stable on yearlong timescales.

  3. Intelligent simulation of aquatic environment economic policy coupled ABM and SD models.

    Science.gov (United States)

    Wang, Huihui; Zhang, Jiarui; Zeng, Weihua

    2018-03-15

    Rapid urbanization and population growth have resulted in serious water shortage and pollution of the aquatic environment, which are important reasons for the complex increase in environmental deterioration in the region. This study examines the environmental consequences and economic impacts of water resource shortages under variant economic policies; however, this requires complex models that jointly consider variant agents and sectors within a systems perspective. Thus, we propose a complex system model that couples multi-agent based models (ABM) and system dynamics (SD) models to simulate the impact of alternative economic policies on water use and pricing. Moreover, this model took the constraint of the local water resources carrying capacity into consideration. Results show that to achieve the 13th Five Year Plan targets in Dianchi, water prices for local residents and industries should rise to 3.23 and 4.99 CNY/m 3 , respectively. The corresponding sewage treatment fees for residents and industries should rise to 1.50 and 2.25 CNY/m 3 , respectively, assuming comprehensive adjustment of industrial structure and policy. At the same time, the local government should exercise fine-scale economic policy combined with emission fees assessed for those exceeding a standard, and collect fines imposed as punishment for enterprises that exceed emission standards. When fines reach 500,000 CNY, the total number of enterprises that exceed emission standards in the basin can be controlled within 1%. Moreover, it is suggested that the volume of water diversion in Dianchi should be appropriately reduced to 3.06×10 8 m 3 . The reduced expense of water diversion should provide funds to use for the construction of recycled water facilities. Then the local rise in the rate of use of recycled water should reach 33%, and 1.4 CNY/m 3 for the price of recycled water could be provided to ensure the sustainable utilization of local water resources. Copyright © 2017 Elsevier B

  4. PENGARUH PENGGUNAAN MEDIA ANIMASI DALAM PEMBELAJARAN IPS TERHADAP MOTIVASI BELAJAR SISWA KELAS IV SD NEGERI MANNURUKI

    Directory of Open Access Journals (Sweden)

    Wahyullah Alannasir

    2016-08-01

    Full Text Available The objective of study at manuruki elementari schole greade are (1 to now the student learning motivation in social study. (2 to she if the animation media usage in social study learning of class IV SD Negeri Mannuruki? (2 how the students' motivation in learning IPS with the use of animation media Elementary School fourth grade students Mannuruki? (3 whether there is influence of media use animation in teaching social studies to students' motivation Mannuruki Elementary School fourth grade?. This research uses experimental research (true experimental design. Data collection  techniques used were: observation, interviews, and questionnaires. The analisis of the data use is deskriptif to describe to proces of learning by using animation media and the student motivation, and inferential analisis is  used to teks the risert hipotesis by using tetest. and  The results showed that: (1 The use of animation media in teaching social studies have stages of learning in which, every meeting there are three main stages were carried out by teachers namely planning, implementation and evaluation are then designed in accordance with the steps for using media animation with both categories. (2 learning motivation of students in social study on student learning motivation, before and after learning by using animation media has increased significantly ie before the treatment is in the category enough and after treatment increased student motivation with very good category. (3 the use of the animation media influence the studens’ motivation to learn at the fourth grade of mannuruki elementary school.    

  5. [Over-expression of BDNF inhibits angiotensin II-induced apoptosis of cardiomyocytes in SD rats].

    Science.gov (United States)

    Cao, Jingli; Wu, Yingfeng; Liu, Geming; Li, Zhenlong

    2018-03-01

    Objective To investigate the role and molecular mechanism of brain-derived neurotrophic factor (BDNF) against the process of cardiomyocyte hypertrophy and apoptosis. Methods Cardiomyocyte hypertrophy were estabolished by angiotensin II (Ang II) in neonatal cardiomyocytes in vitro and incomplete ligature of abdominal aorta of SD rats in vivo. BDNF over-expressing recombinant vector pcDNA5-BDNF was transfected into cardiomyocytes by liposomes. Immunofluorescence staining was used to detect the effect of BDNF transfection on the surface area of myocardial cells. The effect of BDNF transfection on the apoptosis of cardiomyocytes was assayed by flow cytometry. Real-time fluorescent quantitative PCR was performed to detect the effect of over-expression of BDNF on the expressions of atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) mRNAs in cardiomyocytes. Western blot assay was used to observe the changes of BDNF, ANP and BNP, calmodulin kinase 2 (CaMK2) and phosphorylated calmodulin kinase 2 (p-CaMK2), calcineurin (CaN), p-CaN, nuclear factor of activated T cells 3 (NFATC3) and p-NFATC3 protein expressions in the myocardial tissues and cardiomyocytes. Results The expression of BDNF protein increased significantly in cardiac hypertrophy animal and cell models in a time-dependent manner. Compared with the untransfected control cardiomyocytes, the surface area of cardiomyocytes, the rate of apoptosis, the levels of ANP and BNP mRNA and protein expression, the levels of p-CaMK2 and CaN protein in the BDNF over-expressed cardiomyocytes were remarkably reduced, while the level of p-NFATC3 protein rose significantly. Conclusion BDNF inhibits the apoptosis of cardiomyocytes induced by Ang II, and it plays the role by inhibiting CaMK2 and CaN signaling pathways.

  6. READING, PREPROCESSING OF ACCELERATIONS AND CORNERS INCLINATION WITH MPU-6050 I RECORD THEM ON SD-CARD THE ARDUINO DUE

    Directory of Open Access Journals (Sweden)

    V. G. Mikhailov

    2016-01-01

    Full Text Available The short review of microcontrollers of family Arduino, their characteristics and application fields is given. Importance of record of parameters of researched object is marked to produce debugging of control systems on microcontrollers Arduino. Unique possibility of registration of parameters in family Arduino is record on SD a card in an alpha mode with usage of functions print (, write (. The problems connected to record of the binary data on SD a card on microcontroller Arduino Due are considered. The analysis of methods of record of the binary data on SD-card Arduino Due, originating problems with neocleaning of memory from the previous program leading to possibility of duplication of the data on SD to a card, presence of the erratic point of view about restriction of volumes of data record and necessity of usage become outdated SD-cards is carried out. Ways of elimination of the marked lacks are considered. The estimation of high-speed performance of various approaches of a data recording on SD a card is led. On the basis of the led researches the approach of multiplexing of the writeable information at the expense of conversion of the binary data is offered is byte-serial in a character array in code ASCI without magnification of their volume and record by units on 240 byte. It allows to use as much as possible standard function possibilities write ( Arduino and specificity of the organization of memory SD of cards and to increase high-speed performance more than in 1100 times in comparison with record in a character type on one byte.It is marked that usage of decisions of an exception of duplication of the data offered at forums does not provide completeness of their elimination. For Arduino Due for storage cleaning it is necessary usages of the special programmator or setting of the new program of loading.

  7. Resonant heavy-ion elastic scattering from s-d shell nuclei

    International Nuclear Information System (INIS)

    DeVries, R.M.

    1978-01-01

    Angular distributions at angles 130 less than theta/sub cm/ less than 180 0 were measured for 12 C + 28 Si, 32 S, 40 Ca as well as 9 Be, 13 C + 28 Si in the energy range 20 MeV less than or equal to E/sub cm/ less than or equal to 35 MeV. Cross sections rising towards 180 0 are observed for all reactions. Excitation functions for the back-angle enhancement show distinct structures, most pronounced for 12 C + 28 Si. Angular distributions for 12 C, especially those corresponding to peaks in the excitation function show oscillations of the type vertical bar P/sub J/(cos theta) vertical bar 2 . The 12 C back-angle enhancement decreases with target mass. Backscattering of the nonalpha nuclei 9 Be and 13 C is reduced by about two orders of magnitude in comparison with 12 C. Similar measurements for the 28 Si( 12 C, 16 O) 24 Mg reaction and 16 O + 24 Mg elastic scattering allow comparison of reaction data with the corresponding entrance and exit channel data. Standard theoretical approaches fail to explain all the observed effects

  8. [Comparison of 1 mg/body and 3 mg/body of intravenous granisetron for the prevention of chemotherapy-induced nausea and vomiting and adverse events in hematological malignancy patients].

    Science.gov (United States)

    Motohashi, Shinya; Hori, Katsuhito; Ono, Takaaki; Ohnishi, Kazunori; Kawakami, Junichi

    2012-01-01

    Granisetron is a selective 5-hydroxy tryptamine3 receptor antagonist and widely used for chemotherapy-induced nausea and vomiting (CINV). Recommended dose of intravenous granisetron in the USA and Europe has been set at 0.01 mg/kg (1 mg/body) in the antiemetic treatment guidelines established by the American Society of Clinical Oncology and National Comprehension Cancer Network. In contrast, the approved dose in Japan is 0.04 mg/kg (3 mg/body). Randomized controlled trials (RCTs) which compared 1 mg/body with 3 mg/body of intravenous granisetron for CINV had been reported in Japan. In these RCTs, however, hematological malignancy patients were excluded. We performed observational retrospective study to compare 1 mg/body with 3 mg/body of intravenous granisetron for the prevention of CINV and adverse events in hematological malignancy patients. Number of the patients and chemotherapy courses were 15 and 30 in the 1 mg/body group, and 15 and 27 in the 3 mg/body group, respectively. No nausea rates in the 1 and 3 mg/body group were 83% and 89% of courses, respectively. No vomiting rates in the 1 and 3 mg/body group were 97% and 100% of courses, respectively. The incidences of constipation in the 1 and 3 mg/body group were 34% and 45% of courses, respectively. Anaphylaxis and headache did not occur in both groups. Our findings suggested that 1 mg/body of intravenous granisetron can prevent from CINV in hematological malignancy patients, as well as 3 mg/body.

  9. Analysis of nevirapine (NVP) resistance in Ugandan infants who were HIV infected despite receiving single-Dose (SD) NVP versus SD NVP plus daily NVP up to 6 weeks of age to prevent HIV vertical transmission.

    Science.gov (United States)

    Church, Jessica D; Omer, Saad B; Guay, Laura A; Huang, Wei; Lidstrom, Jessica; Musoke, Philippa; Mmiro, Francis; Jackson, J Brooks; Eshleman, Susan H

    2008-10-01

    Single-dose nevirapine (SD NVP) at birth plus NVP prophylaxis for the infant up to 6 weeks of age is superior to SD NVP alone for prevention of vertical transmission of human immunodeficiency virus (HIV) through breastfeeding. We analyzed NVP resistance in HIV-infected Ugandan infants who received either SD NVP or extended NVP prophylaxis. We tested plasma HIV by using a genotyping assay (ViroSeq; Celera Diagnostics), a phenotypic resistance assay (PhenoSense; Monogram Biosciences), and sensitive point mutation assay (LigAmp, for K103N, Y181C, and G190A). When infants were 6 weeks old, ViroSeq detected NVP resistance in a higher proportion of infants in the extended NVP arm than in the SD NVP arm (21 of 25 [84%] vs. 12 of 24 [50%]; P = .01). Similar results were obtained with LigAmp and PhenoSense. In both study arms, infants who were HIV infected at birth frequently had NVP resistance detected. In contrast, infants in the extended NVP arm who were HIV infected after birth were more likely to have resistance detected at 6 weeks, compared with infants in the SD NVP arm. The use of extended NVP prophylaxis was also associated with detection of NVP resistance by ViroSeq at 6 months (7 of 7 [100%] infants in the extended NVP arm had resistance detected, compared with 1 of 6 [16.7%] infants in the SD NVP arm; P = .005). The use of extended NVP prophylaxis was associated with increased selection for and persistence of NVP resistance in HIV-infected Ugandan infants.

  10. Leveraging master-slave OpenFlow controller arrangement to improve control plane resiliency in SD-EONs.

    Science.gov (United States)

    Chen, Xiaoliang; Zhao, Bin; Ma, Shoujiang; Chen, Cen; Hu, Daoyun; Zhou, Wenshuang; Zhu, Zuqing

    2015-03-23

    In this paper, we study how to improve the control plane resiliency of software-defined elastic optical networks (SD-EONs) and design a master-slave OpenFlow (OF) controller arrangement. Specifically, we introduce two OF controllers (OF-Cs), i.e., the master and slave OF-Cs, and make them work in a collaborative way to protect the SD-EON against controller failures. We develop a controller communication protocol (CCP) to facilitate the cooperation of the two OF-Cs. With the CCP, the master OF-C (M-OF-C) can synchronize network status to the slave OF-C (S-OF-C) in real time, while S-OF-C can quickly detect the failure of M-OF-C and take over the network control and management (NC&M) tasks timely to avoid service disruption. We implement the proposed framework in an SD-EON control plane testbed built with high-performance servers, and perform NC&M experiments with different network failure scenarios to demonstrate its effectiveness. Experimental results indicate that the proposed system can restore services in both the data and control planes of SD-EON jointly while maintaining relatively good scalability. To the best of our knowledge, this is the first demonstration that realizes control plane resiliency in SD-EONs.

  11. (p,γ) resonance strengths in the s-d shell

    International Nuclear Information System (INIS)

    Paine, B.M.; Sargood, D.G.

    1979-01-01

    The strengths of selected resonances in the energy range 0.5-2.0 MeV in the (p,γ) reactions on 26 Mg, 30 Si, 34 S, 37 C1, 39 K and 40 Ca have been found relative to the 632 and 992 keV resonances in 27 A1(p,γ) 28 Si by relative yield measurements. Absolute measurements were conducted on the selected resonances in 27 A1(p,γ) 28 Si and 30 Si(p,γ) 31 p by semi-thick target and thin target techniques with the target thickness, needed for the latter technique, found by Rutherford backscattering of protons. Absolute strengths for all of the resonances treated, together with one from each of 23 Na, 31 p and 35 C1, reported in a previous paper, were deduced by normalizing to the absolute measurements on the 27 A1(p,γ) 28 Si resonances

  12. IMPLEMENTASI KEBIJAKAN SEKOLAH DASAR INKLUSI ( Studi Kualitatif Deskriptif pada SD Inklusif di Jakarta Utara

    Directory of Open Access Journals (Sweden)

    Kurniawan *

    2017-06-01

    . Implementation of inclusion policies relating dengaan good that the management of inclusion can work well. Obstacles encountered in the implementation of policies and management penyelnggaraan inclusion operationally related standards. To that end, the government should formulate a policy SD. Inclusion in accordance with the needs of the community. Step - steps to address implementation bottlenecks inclusion policy administration and management to increase and improve learning facilities and infrastructure, providing special anggran maximum inclusion, increase the quality and quantity of teachers in accordance with department inclusions. To be recommended in order to implement the policy administration and management should be the maximum.

  13. Radioprotective effect of calorie restriction in Hela cells and SD rats

    International Nuclear Information System (INIS)

    Yang Yang; Chong Yu; Jiao Yang; Xu Jiaying; Fan Saijun

    2012-01-01

    Objective: To explore the effect of low calorie metabolism on the survival of HeLa cells exposed to X-rays, and the influence of starvation on the antioxidative factors in the blood of rats after irradiation. Methods: MTT method was used to evaluate the impact of different concentration glucose on the proliferation of HeLa cells. Colony formation assay was employed to detect the influence of glucose (1, 5, 10 and 25 mmol/L) on radiosensitivity of HeLa cells. Flow cytometry assay was used to analyze distribution of cell cycle and apoptosis. 60 male SD rats were randomly divided into 6 groups with 10 rats each. Rats in every two groups were fed ad libitum, fasted for 24 h and fasted for 48 h, respectively. Rats in one group of each approach were respectively exposed to whole-body X-rays at 11 Gy. At 2 h after irradiation,all of rats were sacrificed and their venous blood was collected. Elisa kits were used to detect superoxide dismutase (SOD) and total antioxidant capacity (T-AOC). Results: An increased viability was observed in HeLa cells treated with the glucose at low concentration (<25 mmol/L), while HeLa cell growth was inhibited by glucose at doses of >25 mmol/L. Relevant to cells treated with 1 mmoL/L glucose, SERs (sensitive enhancement ratio) in cells exposed to 5, 10 and 25 mmol/L glucose were 1.07, 1.10 and 1.23,respectively. A reduction of G 2 /M and S arrests and apoptosis caused by 6 Gy X-ray irradiation were observed [(49.68 ±1.88)% and (35.54±1.45)% at G 2 /M phase, (16.88 ±1.22)% and (10.23 ±1.65)% at S phase, t=10.42, 5.61, P<0.05] and in the cells treated with 1 mmol/L glucose compared with cells treated with 25 mmol/L glucose [(25.50 ± 0.95)% and (7.56 ± 1.07)%, t=21.72, P<0.05].Without irradiation, calorie restriction exhibited a negligible influence on SOD and T-AOC in rats. However, after 11 Gy irradiation, compared with rats fed ad libitum, the levels of SOD and T-AOC were significantly increased in rats with calorie restriction (t=40

  14. Preliminary screening of Ni(II metal tolerance and dye-decolorizing by Nocardiopsis sp. SD8

    Directory of Open Access Journals (Sweden)

    Ramasamy Thangaraj

    2016-04-01

    Full Text Available Objective: To reveal the screening of metal tolerance and dye-decolorizing of Nocardiopsis sp. Methods: NiSO4 and Congo red dye were used for evaluating the metal tolerance and dyedecolorizing of the randomly selected actinobacterial isolates. Results: Nocardiopsis sp. SD8 showed a better efficiency in Ni(II tolerance, though a longer lag phase was observed for this microorganism grown for 7 days in integrated mismatch negativity. Interestingly, we also found that Nocardiopsis sp. SD8 had dye-decolorizing, hemolytic, lipase and protease activity. Conclusions: The present results revealed the bioremediation of metal resistant and diverse properties of Nocardiopsis sp. SD8 and further investigations are needed to extract and identify the potent molecule.

  15. Influence of the method of optimizing adjustments of ARV-SD on attainable degree of system stability. Vliyaniye metoda optimizatsii nastroyek ARV-SD na dostizhimuyu stepen ustoychivosti sistemy

    Energy Technology Data Exchange (ETDEWEB)

    Gruzdev, I.A.; Trudospekova, G.Kh.

    1983-01-01

    An examination is made of the efficiency of the methods of successive and simultaneous optimization of adjustments of ARV-SD (ARV of strong action) of several PP. It is shown that with the use of the method of simultaneous optimization for an idealized model of complex EPS, it is possible to attain absolute controllability of the degree of stability.

  16. Quasi-SU(3) truncation scheme for even-even sd-shell nuclei

    International Nuclear Information System (INIS)

    Vargas, C.E.; Hirsch, J.G.; Draayer, J.P.

    2001-01-01

    The quasi-SU(3) symmetry was uncovered in full pf and sdg shell-model calculations for both even-even and odd-even nuclei. It manifests itself through a dominance of single-particle and quadrupole-quadrupole terms in a Hamiltonian used to describe well-deformed nuclei. A practical consequence of the quasi-SU(3) symmetry is an efficient basis truncation scheme. In [C.E. Vargas et al., Phys. Rev. C 58 (1998) 1488] it is shown that when this type of Hamiltonian is diagonalized in an SU(3) basis, only a few irreducible representations (irreps) of SU(3) are needed to describe the yrast band, the leading S=0 irrep augmented with the leading S=1 irreps in the proton and neutron subspaces. In the present article the quasi-SU(3) truncation scheme is used, in conjunction with a 'realistic but schematic' Hamiltonian that includes the most important multipole terms, to describe the energy spectra and B(E2) transition strengths of 20,22 Ne, 24 Mg and 28 Si. The effect of the size of the Hilbert space on both sets of observables is discussed, as well as the structure of the yrast band and the importance of the various terms in the Hamiltonian. The limitations of the model are explicitly discussed

  17. Quasi-SU(3) truncation scheme for even-even sd-shell nuclei

    Energy Technology Data Exchange (ETDEWEB)

    Vargas, C.E. E-mail: cvargas@fis.cinvestav.mx; Hirsch, J.G. E-mail: hirsch@nuclecu.unam.mx; Draayer, J.P. E-mail: draayer@lsu.edu

    2001-07-30

    The quasi-SU(3) symmetry was uncovered in full pf and sdg shell-model calculations for both even-even and odd-even nuclei. It manifests itself through a dominance of single-particle and quadrupole-quadrupole terms in a Hamiltonian used to describe well-deformed nuclei. A practical consequence of the quasi-SU(3) symmetry is an efficient basis truncation scheme. In [C.E. Vargas et al., Phys. Rev. C 58 (1998) 1488] it is shown that when this type of Hamiltonian is diagonalized in an SU(3) basis, only a few irreducible representations (irreps) of SU(3) are needed to describe the yrast band, the leading S=0 irrep augmented with the leading S=1 irreps in the proton and neutron subspaces. In the present article the quasi-SU(3) truncation scheme is used, in conjunction with a 'realistic but schematic' Hamiltonian that includes the most important multipole terms, to describe the energy spectra and B(E2) transition strengths of {sup 20,22}Ne, {sup 24}Mg and {sup 28}Si. The effect of the size of the Hilbert space on both sets of observables is discussed, as well as the structure of the yrast band and the importance of the various terms in the Hamiltonian. The limitations of the model are explicitly discussed.

  18. Studies on the toxic effects of periodontal sustained release drug containing ornidazole and pefloxacin mesylate on early embryonic development of SD rat

    Directory of Open Access Journals (Sweden)

    Zheng-mou DONG

    2011-01-01

    Full Text Available Objective To evaluate the toxic effects of periodontal sustained release drug containing ornidazole and pefloxacin mesylate on early embryonic development of SD rats.Methods A total of 100female SD rats were randomly divided into negative control,low-,medium-,high-dose group and intervention group(20each.Rats in low-,medium-and high-dose group were fed daily with the sustained release drug at 1,4,and 8g/kg respectively;those in negative control group were fed daily with distilled water from the 14th day before mating to the 7th day of pregnancy continuously,and those in intervention group received cyclophosphamide(40mg/kgby intraperitoneal injection for 5successive days.During this period,the general status,mating,pregnancy,coefficient of ovary and uterus,the numbers of corpus luteum,nidation,live births,stillbirths,absorbed embryo,prenidatory and postnidatory mortality,serum testosterone(Tand estradiol(E2were determined respectively.Histopathologic examination of the ovary and uterus,immunohistochemical observation of ovaries for proliferating cell nuclear antigen(PCNAand Bcl-2associated X protein(Baxwere also performed respectively.Results The general status of those rats was good except one in the low-dose group and one in the intervention group died on the 14th day of administration,and one in negative control and one in high dose group died on the 5th day of pregnancy,respectively.The body weight of animals decreased significantly(P 0.05.The serum T level in medium-and high-dose group and the E2level in high-dose group declined compared to that in negative control group(P < 0.05.Conclusions Although the periodontal sustained release drug containing ornidazole and pefloxacin mesylate shows no toxicity to the early embryonic development of SD rats,the high dose drug has certain toxicity to ovary.Declined serum concentrations of T and E2,reduced expression of PCNA,and increased Bax may be the causes of the toxicity.

  19. Karolinska Psychodynamic Profile for Sexual Disorders: KAPP-SD. A proposal for a psychodynamic rating scale for sexual disorders.

    Science.gov (United States)

    Soldati, Lorenzo; Köhl, John; Abraham, Georges; Bianchi Demicheli, Francesco; Wilczek, Alexander

    2015-01-01

    Our first objective in this paper was to review the literature on psychodynamic rating scales of sexual disorders. Our second objective, based on the findings from our review, was to develop a psychodynamic rating scale for people with sexual disorders: the KAPP-SD. We developed the KAPP-SD by modifying an existing psychodynamic rating scale, which assesses stable modes of mental functioning and character traits, the Karolinska Psychodynamic Profile (KAPP). We removed items 13 and 14 of the KAPP and replaced them with three other items-sexual fantasies, conceptions and role of gender identity, and conceptions and role of sexual orientation. These items are part of the assessment of an individual's sexuality and are used to evaluate a person with a sexual disorder psychodynamically. The KAPP-SD, a modified version of the KAPP, can be found in the Appendix. We developed the KAPP-SD in order to help sex therapists make a rigorous psychodynamic evaluation of persons with sexual disorders, which would give information on the prognosis and on the type of treatment to offer.

  20. Densities, form factors, transitions and multipole moments in the s-d shell, with the Skyrme force

    International Nuclear Information System (INIS)

    Oliveira, D.R. de; Mizrahi, S.S.

    1977-09-01

    The nuclear densities, radii, multipole moments, form-factors and transition probabilities obtained for the A = 4n type of nuclei in the s-d shell are reported, using the Hartree-Fock wave functions calculated with the Skyrme force. Experimental data and theoretical values derived by others are shown for comparison [pt

  1. Reducing mutans streptococci and caries development by Lactobacillus paracasei SD1 in preschool children: a randomized placebo-controlled trial.

    Science.gov (United States)

    Pahumunto, Nuntiya; Piwat, Supatcharin; Chankanka, Oitip; Akkarachaneeyakorn, Nuchnaree; Rangsitsathian, Karnrawee; Teanpaisan, Rawee

    2018-03-22

    To examine a reducing effect of Lactobacillus paracasei SD1 on MS and caries in preschool children. A total of 124 children, aged 1.5-5 years old, participated and were randomly assigned to the probiotic or control group. The probiotic group received L. paracasei SD1-milk and the control group received standard-milk once daily for 3 months. MS/lactobacilli were enumerated and the caries score was examined. Association between probiotic consumption and bacterial level, or caries progression was assessed by a multivariate logistic regression. This study was registered at the Thai-Clinical-Trials-Registry (TCTR20140903001). Probiotic was found to be a factor associated with the MS level. Children in the probiotic group had a significantly lower risk of an increase in the MS level than in the control group after receiving the probiotic milk at 3- and 4-months with p < .001 and p = .040, respectively. Probiotic significantly reduced the risk for caries compared to the control group (p = .016). There were no adverse effects or non-compliance reported in either group. Consumption of milk powder containing L. paracasei SD1 resulted in a reduction of both salivary MS and delayed new caries development, and the strain is safe for use in young children. Results suggest that L. paracasei SD1 may be an alternative way for caries prevention in young children.

  2. Preparation and Hydrogen Storage Properties of Mg-Rich Mg-Ni Ultrafine Particles

    Directory of Open Access Journals (Sweden)

    Jianxin Zou

    2012-01-01

    Full Text Available In the present work, Mg-rich Mg-Ni ultrafine powders were prepared through an arc plasma method. The phase components, microstructure, and hydrogen storage properties of the powders were carefully investigated. It is found that Mg2Ni and MgNi2 could be obtained directly from the vapor state reactions between Mg and Ni, depending on the local vapor content in the reaction chamber. A nanostructured MgH2 + Mg2NiH4 hydrogen storage composite could be generated after hydrogenation of the Mg-Ni ultrafine powders. After dehydrogenation, MgH2 and Mg2NiH4 decomposed into nanograined Mg and Mg2Ni, respectively. Thermogravimetry/differential scanning calorimetry (TG/DSC analyses showed that Mg2NiH4 phase may play a catalytic role in the dehydriding process of the hydrogenated Mg ultrafine particles.

  3. Simultaneous consideration of TQM and TPM influence on production performance: A case study on multicolor offset machine using SD Model

    Directory of Open Access Journals (Sweden)

    Nagaraj H. Kamath

    2016-09-01

    Full Text Available An attempt is made in this research to show the relevance of System Dynamics (SD as a tool for simultaneously considering TQM and TPM environment in a offset machine of a commercial printing press. By controlling the TQM and TPM variables, this model will attempt to simulate or predict the behavior of an efficient printing operation. Identifying other scenarios pertaining to Human factors, affecting the socio-technical variables is the future research work of this paper. The practical implication concerns the efficient decision making system in multi-colour sheet feed offset printing, by controlling the socio-technical variables. This is a novel approach of combining different socio-technical variables SD and Cased based approach for obtaining a productive environment in print operation called “Total Production Management”.

  4. Effect of Ganfukang on liver function and serum hepatic fibrosis markers levels in SD rats with experimental hepatic fibrosis

    International Nuclear Information System (INIS)

    Che Ying; Wang Shanju; Xu Tingting; Jiang Miaona; Jia Yujie

    2004-01-01

    Objective: To observe the effect of Ganfukang on liver function and serum hepatic fibrosis markers levels in SD rats with experimental hepatic fibrosis. Methods: SD rat models of liver fibrosis was induced by CCl 4 (n=57). Liver function (GPT, GOT) and serum hepatic fibrosis markers levels (HA, LN, C-IV, PC-III, with RIA) were tested in these models and 10 control rats. Eleven model rats were left untreated, the others were treated with Ganfukang of different concentrations and the above hepatic parameters were again determined after completion of treatment. Results: Lever function was much deteriorated and serum markers levels significantly increased in the model rats (vs controls, P<0.01). After treatment with Ganfukang, the improvement was significant (vs untreated models, P<0.01). Conclusion: Ganfukang is of definite therapeutic value for experimental hepatic fibrosis in rat models. (authors)

  5. Uniaxial Pressure Effect on the SdH Oscillations in Heavy-Fermion Semimetal CeRu4Sb12

    International Nuclear Information System (INIS)

    Saha, S. R.; Kobayashi, M.; Sugawara, H.; Namiki, T.; Abe, K.; Aoki, Y.; Sato, H.

    2003-01-01

    We report the first successful Shubnikov-de Haas (SdH) experiment under uniaxial pressure in the anomalous heavy-fermion semimetal CeRu 4 Sb 12 . The nature of the quantum oscillations in the magnetoresistance is found to be significantly sensitive to uniaxial pressure. The results reveal that the nearly spherical Fermi surface elongates along the direction of the uniaxial pressure. (author)

  6. TINJAUAN KRIMINOLOGIS TERHADAP KEJAHATAN PENYEBARAN VIDEO PORNO (Studi Kasus di Kota Makassar Tahun 2010 s/d 2013)

    OpenAIRE

    DEVANI. K, PUTRI

    2014-01-01

    - PUTRI DEVANI. K. (B 111 06 644). Tinjauan Kriminologis Terhadap Kejahatan Penyebaran Video Porno (Studi Kasus di Kota Makassar Tahun 2010 s/d 2013). Penelitian ini bertujuan untuk mengetahui faktor-faktor yang menyebabkan terjadinya penyebaran video porno di kota Makassar serta untuk mengetahui upaya pemberantasan penyebaran video porno di kota Makassar. Pelaksanaan penelitian ini dilaksanakan di Polrestabes Makassar dan Makassar Trade Centre (MTC). Untuk Polrestabes karena pada le...

  7. Implementasi Kebijakan Pembelajaran Tematik Terpadu Kurikulum 2013 di SDN Kauman 1 Malang dan SD Muhammadiyah 1 Malang

    Directory of Open Access Journals (Sweden)

    . Mulyadin

    2016-07-01

    Full Text Available Abstrak: Implementasi Kebijakan Pembelajaran Tematik Terpadu Kurikulum 2013 di SDN Kauman 1 Malang dan SD Muhammadiyah 1 Malang. Tujuan penelitian ini yaitu untuk mendeskripsikan dan menganalisis implementasi kebijakan pembelajaran tematik terpadu yang dilihat dari perencanaan pembelajaran, pelaksanaan pembelajaran, penilaian hasil pembelajaran, dan pengawasan pembelajaran di SDN Kauman 1 Malang dan SD Muhammadiyah 1 Malang. Metode yang digunakan dalam penelitian ini adalah pendekatan kualitatif dan dibantu menggunakan data statistitik dengan rancangan penelitian deskriptif. Data dalam penelitian ini diambil dari hasil kuesioner dan wawancara pada responden dan observasi pelaksanaan pembelajarannya. Subjek penelitian ini adalah Kepala Sekolah, Wakil Kepala Sekolah Bidang Kurikulum dan Guru. Berdasarkan data hasil penelitian bahwa implementasi kebijakan pembelajaran tematik terpadu kurikulum 2013 di SDN Kauman 1 Malang dan SD Muhammadiyah 1 Malang sudah dikategorikan baik, hal ini dilihat dari aspek penguasaan, pemahaman dan kemampuan guru dalam proses perencanaan pembelajaran, pelaksanaan pembelajaran, dan penilaian hasil belajar begitupun pada proses pengawasan yang dilakukan oleh kepala sekolah sudah berjalan maksimal sesuai dengan tugas dan tanggung jawabnya seperti yang ada pada Peraturan Menteri Pendidikan dan Kebudayaan (Permendikbud Republik Indonesia Nomor 65 Tahun 2013 tentang Standar Proses Pendidikan Dasar dan Menengah. Kata Kunci: Implementasi, Pembelajaran Tematik Terpadu dan Kurikulum 2013

  8. SD OCT Features of Macula and Silicon Oil–Retinal Interface in Eyes Status Post Vitrectomy for RRD

    Directory of Open Access Journals (Sweden)

    Manish Nagpal

    2015-03-01

    Full Text Available Aim: To objectively document findings at the Silicon oil-Retinal interface, macular status and tamponade effect in Silicon Oil (SO filled eyes using SD OCT. Methods: 104 eyes of 104 patients underwent SD OCT examination, horizontal and vertical macular scans, in silicone oil filled eyes which underwent silicone oil injection post vitrectomy for rhegmatogenous retinal detachment. Findings were divided into 3 Groups; Group A: Findings at silicon oil retinal interface, Group B: Macular pathology and Group C: Tamponade effect. Group C was further divided into two groups; Group 1: Complete tamponade and Group 2: Incomplete tamponade. Results: Group A: subsilicon epiretinal membranes N = 17 (16.3%, emulsified silicon oil N = 16 (15.4% Group B: foveal thickening N = 22 (21.2%, foveal thinning N = 6 (5.7%, subfoveal fluid N = 8 (7.6%, macular hole N = 2 (1.9%; Group C: Incomplete tamponade was noted in N = 12 (11.5%, complete tamponade N = 92 (88.5%.10 out of 104 eyes (9.6% had recurrent retinal detachment post silicon oil removal. 8 of these eyes had complete tamponade and 2 had incomplete tamponade. Conclusion: SD OCT is a useful tool to assess the SO–Retina interface, tamponade effect and macular pathology in SO filled eyes. There is lesser incidence of redetachment with incomplete tamponade in OCT.

  9. Alterations of Mg2+ After Hemorrhagic Shock.

    Science.gov (United States)

    Lee, Mun-Young; Yang, Dong Kwon; Kim, Shang-Jin

    2017-11-01

    Hemorrhagic shock is generally characterized by hemodynamic instability with cellular hypoxia and diminishing cellular function, resulting from an imbalance between systemic oxygen delivery and consumption and redistribution of fluid and electrolytes. Magnesium (Mg) is the fourth most abundant cation overall and second most abundant intracellular cation in the body and an essential cofactor for the energy production and cellular metabolism. Data for blood total Mg (tMg; free-ionized, protein-bound, and anion-bound forms) and free Mg 2+ levels after a traumatic injury are inconsistent and only limited information is available on hemorrhagic effects on free Mg 2+ as the physiologically active form. The aim of this study was to determine changes in blood Mg 2+ and tMg after hemorrhage in rats identifying mechanism and origin of the changes in blood Mg 2+ . Hemorrhagic shock produced significant increases in blood Mg 2+ , plasma tMg, Na + , K + , Cl - , anion gap, partial pressures of oxygen, glucose, and blood urea nitrogen but significant decreases in RBC tMg, blood Ca 2+ , HCO 3 - , pH, partial pressures of carbon dioxide, hematocrit, hemoglobin, total cholesterol, and plasma/RBC ATP. During hemorrhagic shock, K + , anion gap, and BUN showed significant positive correlations with changes in blood Mg 2+ level, while Ca 2+ , pH, and T-CHO correlated to Mg 2+ in a negative manner. In conclusion, hemorrhagic shock induced an increase in both blood-free Mg 2+ and tMg, resulted from Mg 2+ efflux from metabolic damaged cell with acidosis and ATP depletion.

  10. Discovery of the shape coexisting 0+ state in 32Mg

    International Nuclear Information System (INIS)

    Wimmer, Kathrin

    2010-01-01

    The evolution of shell structure in exotic nuclei as a function of proton (Z) and neutron (N) number is currently at the center of many theoretical and experimental investigations. It has been realized that the interaction of the last valence protons and neutrons, in particular the monopole component of the residual interaction between those nucleons, can lead to significant shifts in the single-particle energies, leading to the collapse of classic shell closures and the appearance of new shell gaps. The ''Island of Inversion'' around 32 Mg, which is one of the most studied phenomena in the nuclear chart, is a well known example for such changes in nuclear structure. In this region of neutron-rich nuclei around the magic number N=20 strongly deformed ground states in Ne, Na, and Mg isotopes have been observed. Due to the reduction of the N=20 shell gap quadrupole correlations can enable low-lying deformed 2p-2h intruder states from the fp-shell to compete with spherical normal neutron 0p-0h states of the sd-shell. In this situation the promotion of a neutron pair across the N=20 gap can result in deformed intruder ground states. Consequentially the two competing configurations can lead to the coexistence of spherical and deformed 0 + states in the neutron rich nuclei 30,32 Mg. In this work the shape coexistence in 32 Mg was studied by a two neutron transfer reaction at the REX-ISOLDE facility (CERN). The two neutron transfer reaction with a 30 Mg beam involved for the first time the use of a radioactive tritium target in combination with a radioactive heavy ion beam. Light charged particles emitted from the target were detected and identified by the T-REX particle detector while γ-rays were detected by the MINIBALL Germanium detector array. The shape of the angular distribution of the protons allows to unambiguously determine the angular momentum transfer ΔL of the reaction and thus to identify the 0 + states. The analysis of excitation energies and angular

  11. Modeling and stabilities of Mg/MgH2 interfaces: A first-principles investigation

    Directory of Open Access Journals (Sweden)

    Jia-Jun Tang

    2014-07-01

    Full Text Available We have theoretically investigated the modeling and the structural stabilities of various Mg/MgH2 interfaces, i.e. Mg(101¯0/MgH2(210, Mg(0001/MgH2(101 and Mg(101¯0/MgH2(101, and provided illuminating insights into Mg/MgH2 interface. Specifically, the main factors, which impact the interfacial energies, are fully considered, including surface energies of two phases, mutual lattice constants of interface model, and relative position of two phases. The surface energies of Mg and MgH2, on the one hand, are found to be greatly impacting the interfacial energies, reflected by the lowest interfacial energy of Mg(0001/MgH2(101 which is comprised of two lowest energy surfaces. On the other hand, it is demonstrated that the mutual lattice constants and the relative position of two phases lead to variations of interfacial energies, thus influencing the interface stabilities dramatically. Moreover, the Mg-H bonding at interface is found to be the determinant of Mg/MgH2 interface stability. Lastly, interfacial and strain effects on defect formations are also studied, both of which are highly facilitating the defect formations. Our results provide a detailed insight into Mg/MgH2 interface structures and the corresponding stabilities.

  12. Sub-chronic 90-day toxicity of neamine in SD rats and its anti-liver cancer activity in vitro and in vivo

    Energy Technology Data Exchange (ETDEWEB)

    Wu, Yanli [Department of pharmacology, School of Pharmacy, Huazhong University of Science and Technology, Wuhan 400030 (China); Feng, Yongdong [Department of Gastrointestinal Surgery, Tongji Hospital, Huazhong University of Science and Technology, Wuhan 400030 (China); Li, Yanling [Department of pharmacology, School of Pharmacy, Huazhong University of Science and Technology, Wuhan 400030 (China); Xu, Yiping; Shi, Nian [Department of hygienic toxicology, School of Public Health, Huazhong University of Science and Technology, Wuhan 400030 (China); Hu, Guo-fu [Molecular Oncology Research Institute, Tufts Medical Center, Tufts University, Boston 02111 (United States); Wu, Yunxia, E-mail: wuyunxia@hust.edu.cn [Department of pharmacology, School of Pharmacy, Huazhong University of Science and Technology, Wuhan 400030 (China)

    2017-01-15

    Neamine, an inhibitor of angiogenin (ANG), is a new investigative anticancer drug currently in preclinical stage. Here we report the 90-day sub-chronic toxicity of neamine in SD rats and its anti-liver cancer activity in vitro and in vivo. Neamine has a No Observed Adverse Effect Level (NOAEL) of 12 and 16 mg·kg{sup −1}·d{sup −1} for female and male rats, respectively. No mortality was found. The adverse effects included increased organ coefficients of spleen and kidney, increased BUN in both female and male rats at high dose, increased CR and decreased organ coefficients of heart and liver in male rats at high dose. All of which, except the kidney coefficient and BUN in males, returned to normal levels after 28-day recovery. Histopathological examination revealed vacuolar degeneration of glomerulus, degeneration of renal tubules and cast in the kidneys, which were also recovered except in males of high-dosing group. These results indicate that kidney is the most susceptible organ for neamine toxicity. Tissue microarray analysis validated that ANG is up-regulated in hepatocellular carcinoma accompanied by increased nuclear translocation, suggesting that ANG is a possible target for drug development in liver cancer treatment. Neamine blocked nuclear translocation of ANG in HUVEC and HepG2 cells, and inhibited ANG-stimulated cell proliferation without affecting basal level cell proliferation. Neamine also inhibited progression of HepG2 xenografts in athymic mice accompanied by decreased angiogenesis and cancer cell proliferation. These results suggest that neamine is a specific ANG inhibitor with low toxicity and high anti-liver cancer efficacy. - Highlights: • The NOAEL of neamine is 12 mg·kg{sup −1}·d{sup −1} for females and 16 mg·kg{sup −}1·d{sup −1} for males. • The most susceptible organ for neamine toxicity is kidney. • Neamine inhibits the progression of xenograft HepG2 liver cancer in athymic mice.

  13. Sub-chronic 90-day toxicity of neamine in SD rats and its anti-liver cancer activity in vitro and in vivo

    International Nuclear Information System (INIS)

    Wu, Yanli; Feng, Yongdong; Li, Yanling; Xu, Yiping; Shi, Nian; Hu, Guo-fu; Wu, Yunxia

    2017-01-01

    Neamine, an inhibitor of angiogenin (ANG), is a new investigative anticancer drug currently in preclinical stage. Here we report the 90-day sub-chronic toxicity of neamine in SD rats and its anti-liver cancer activity in vitro and in vivo. Neamine has a No Observed Adverse Effect Level (NOAEL) of 12 and 16 mg·kg −1 ·d −1 for female and male rats, respectively. No mortality was found. The adverse effects included increased organ coefficients of spleen and kidney, increased BUN in both female and male rats at high dose, increased CR and decreased organ coefficients of heart and liver in male rats at high dose. All of which, except the kidney coefficient and BUN in males, returned to normal levels after 28-day recovery. Histopathological examination revealed vacuolar degeneration of glomerulus, degeneration of renal tubules and cast in the kidneys, which were also recovered except in males of high-dosing group. These results indicate that kidney is the most susceptible organ for neamine toxicity. Tissue microarray analysis validated that ANG is up-regulated in hepatocellular carcinoma accompanied by increased nuclear translocation, suggesting that ANG is a possible target for drug development in liver cancer treatment. Neamine blocked nuclear translocation of ANG in HUVEC and HepG2 cells, and inhibited ANG-stimulated cell proliferation without affecting basal level cell proliferation. Neamine also inhibited progression of HepG2 xenografts in athymic mice accompanied by decreased angiogenesis and cancer cell proliferation. These results suggest that neamine is a specific ANG inhibitor with low toxicity and high anti-liver cancer efficacy. - Highlights: • The NOAEL of neamine is 12 mg·kg −1 ·d −1 for females and 16 mg·kg − 1·d −1 for males. • The most susceptible organ for neamine toxicity is kidney. • Neamine inhibits the progression of xenograft HepG2 liver cancer in athymic mice.

  14. Di-(2-ethylhexyl) phthalate could disrupt the insulin signaling pathway in liver of SD rats and L02 cells via PPARγ

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Wang; Shen, Xin-Yue; Zhang, Wen-wen; Chen, Hao [Institute of Clinical Pharmacology of Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine of Education Ministry, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, Anhui (China); Xu, Wei-ping, E-mail: xu_weiping666@163.com [Affiliated Anhui Provincial Hospital, Anhui Medical University, Hefei 230001, Anhui (China); Wei, Wei, E-mail: wwei@ahmu.edu.cn [Institute of Clinical Pharmacology of Anhui Medical University, Key Laboratory of Anti-inflammatory and Immune Medicine of Education Ministry, Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, 230032, Anhui (China)

    2017-02-01

    Di-(2-ethylhexyl)-phthalate (DEHP), a ubiquitous industrial pollutant in our daily life, has been reported to cause adverse effects on glucose homeostasis and insulin sensitivity in epidemiological studies previously. Recently, it has been reported to be an endocrine disrupter and ligand to peroxisome proliferator activated receptor, which could influence the homeostasis of liver metabolic systems and contribute to the development of type-2 diabetes. However, the potential mechanisms are not known yet. This study was designed to solve these problems with male SD rats and normal human hepatocyte line, L02 cells, exposed to DEHP for toxicological experiments. Adult male SD rats were divided into four groups, normal group fed with regular diets and three DEHP-treated groups (dissolved in olive oil at doses of 0.05, 5 and 500 mg/kg body weight, respectively, once daily through gastric intubations for 15 weeks). L02 cells were divided into 6 groups, normal group with 5, 10, 25, 50, and 100 μmol/l DEHP groups. DEHP-exposed rats exhibited significant liver damage, glucose tolerance, and insulin tolerance along with reduced expression of insulin receptor and GLUT4 proteins in the liver tissues. The results of in vitro experiments could determine that the DEHP-induced activation of peroxisome proliferator activated receptor γ (PPARγ) played a key role in the production of oxidative stress and down-regulated expression of insulin receptor and GLUT4 proteins in L02 cells. This conclusion could be supported by the results of in vitro experiments, in which the cells were exposed to DEHP with GW9662 (PPARγ inhibitor). In general, these results highlight the key role of PPARγ in the process of insulin resistance induced by DEHP. - Highlights: • DEHP exacerbates insulin resistance both in liver tissues and cells. • Expression of insulin receptor and GLUT4 were altered with PPARγ. • DEHP can induce oxidative stress to disrupt the metabolic homeostasis. • The dose of

  15. Di-(2-ethylhexyl) phthalate could disrupt the insulin signaling pathway in liver of SD rats and L02 cells via PPARγ

    International Nuclear Information System (INIS)

    Zhang, Wang; Shen, Xin-Yue; Zhang, Wen-wen; Chen, Hao; Xu, Wei-ping; Wei, Wei

    2017-01-01

    Di-(2-ethylhexyl)-phthalate (DEHP), a ubiquitous industrial pollutant in our daily life, has been reported to cause adverse effects on glucose homeostasis and insulin sensitivity in epidemiological studies previously. Recently, it has been reported to be an endocrine disrupter and ligand to peroxisome proliferator activated receptor, which could influence the homeostasis of liver metabolic systems and contribute to the development of type-2 diabetes. However, the potential mechanisms are not known yet. This study was designed to solve these problems with male SD rats and normal human hepatocyte line, L02 cells, exposed to DEHP for toxicological experiments. Adult male SD rats were divided into four groups, normal group fed with regular diets and three DEHP-treated groups (dissolved in olive oil at doses of 0.05, 5 and 500 mg/kg body weight, respectively, once daily through gastric intubations for 15 weeks). L02 cells were divided into 6 groups, normal group with 5, 10, 25, 50, and 100 μmol/l DEHP groups. DEHP-exposed rats exhibited significant liver damage, glucose tolerance, and insulin tolerance along with reduced expression of insulin receptor and GLUT4 proteins in the liver tissues. The results of in vitro experiments could determine that the DEHP-induced activation of peroxisome proliferator activated receptor γ (PPARγ) played a key role in the production of oxidative stress and down-regulated expression of insulin receptor and GLUT4 proteins in L02 cells. This conclusion could be supported by the results of in vitro experiments, in which the cells were exposed to DEHP with GW9662 (PPARγ inhibitor). In general, these results highlight the key role of PPARγ in the process of insulin resistance induced by DEHP. - Highlights: • DEHP exacerbates insulin resistance both in liver tissues and cells. • Expression of insulin receptor and GLUT4 were altered with PPARγ. • DEHP can induce oxidative stress to disrupt the metabolic homeostasis. • The dose of

  16. Five-class height-weight mean and SD system applying Estonian reference values of height-weight mean and SD for systematization of seventeen-year-old conscripts' anthropometric data.

    Science.gov (United States)

    Lintsi, Mart; Kaarma, Helje; Aunapuu, Marina; Arend, Andres

    2007-03-01

    A study of 739 conscripts aged 17 years from the town of Tartu and from the Tartu county was performed. Height, weight, 33 anthropometric measurements and 12 skinfolds were measured. The data were classified into five height-weight mean and SD-classes applying the Estonian reference values for this age and sex (Grünberg et al. 1998). There were 3 classes with conformity between height and weight class: 1--small (small height and small weight), 2--medium (medium height and medium weight), 3--large (large height and large weight), 4--weight class dominating (pyknomorphic) and 5--height class dominating (leptomorphic). It was found, that in classes 1, 2 and 3 the height and weight increase was in accordance with the increase in all heights, breadths and depths, circumferences, skinfolds, body fat, muscle and bone mass. In class 4 circumferences, skinfolds, body fat and muscle mass were bigger. In class 5 all heights and the relative bone mass were bigger. The present investigation confirms the assumption that the five height-weight mean and SD five-class system applying the Estonian reference values for classifying the anthropometric variables is suitable for seventeen-year-old conscripts. As well the border values of 5%, 50% and 95% for every anthropometrical variable in the five-classes were calculated, which may be helpful for practical classifying.

  17. Correlation between SD-OCT, immunocytochemistry and functional findings in a pigmented animal model of retinal degeneration

    Directory of Open Access Journals (Sweden)

    Nicolás eCuenca

    2014-12-01

    Full Text Available Purpose: The P23H rhodopsin mutation is an autosomal dominant cause of retinitis pigmentosa. The degeneration can be tracked using different anatomical and functional methods. In our case, we evaluated the anatomical changes using Spectral-Domain Optical Coherence Tomography (SD-OCT and correlated the findings with retinal thickness values determined by immunocytochemistry.Methods: Pigmented rats heterozygous for the P23H mutation, with ages between P18 and P180 were studied. Function was assessed by means of optomotor testing and ERGs. Retinal thicknesses measurements, autofluorescence and fluorescein angiography were performed using Spectralis OCT. Retinas were studied by means of immunohistochemistry. Results: Between P30 and P180, visual acuity decreased from 0.500 to 0.182 cycles per degree (cyc/deg and contrast sensitivity decreased from 54.56 to 2.98 for a spatial frequency of 0.089 cyc/deg. Only cone-driven b-wave responses reached developmental maturity. Flicker fusions were also comparable at P29 (42 Hz. Double flash-isolated rod-driven responses were already affected at P29. Photopic responses revealed deterioration after P29.A reduction in retinal thicknesses and morphological modifications were seen in OCT sections. Statistically significant differences were found in all evaluated thicknesses. Autofluorescence was seen in P23H rats as sparse dots. Immunocytochemistry showed a progressive decrease in the outer nuclear layer, and morphological changes. Although anatomical thickness measures were significantly lower than OCT values, there was a very strong correlation between the values measured by both techniques.Conclusions: In pigmented P23H rats, a progressive deterioration occurs in both retinal function and anatomy. Anatomical changes can be effectively evaluated using SD-OCT and immunocytochemistry, with a good correlation between their values, thus making SD-OCT an important tool for research in retinal degeneration.

  18. The NPOESS Preparatory Project Science Data Segment (SDS) Data Depository and Distribution Element (SD3E) System Architecture

    Science.gov (United States)

    Ho, Evelyn L.; Schweiss, Robert J.

    2008-01-01

    The National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) Science Data Segment (SDS) will make daily data requests for approximately six terabytes of NPP science products for each of its six environmental assessment elements from the operational data providers. As a result, issues associated with duplicate data requests, data transfers of large volumes of diverse products, and data transfer failures raised concerns with respect to the network traffic and bandwidth consumption. The NPP SDS Data Depository and Distribution Element (SD3E) was developed to provide a mechanism for efficient data exchange, alleviate duplicate network traffic, and reduce operational costs.

  19. Large Eddy Simulation of an SD7003 Airfoil: Effects of Reynolds number and Subgrid-scale modeling

    DEFF Research Database (Denmark)

    Sarlak Chivaee, Hamid

    2017-01-01

    This paper presents results of a series of numerical simulations in order to study aerodynamic characteristics of the low Reynolds number Selig-Donovan airfoil, SD7003. Large Eddy Simulation (LES) technique is used for all computations at chord-based Reynolds numbers 10,000, 24,000 and 60...... the Reynolds number, and the effect is visible even at a relatively low chord-Reynolds number of 60,000. Among the tested models, the dynamic Smagorinsky gives the poorest predictions of the flow, with overprediction of lift and a larger separation on airfoils suction side. Among various models, the implicit...

  20. Beyond Retinal Layers: A Deep Voting Model for Automated Geographic Atrophy Segmentation in SD-OCT Images.

    Science.gov (United States)

    Ji, Zexuan; Chen, Qiang; Niu, Sijie; Leng, Theodore; Rubin, Daniel L

    2018-01-01

    To automatically and accurately segment geographic atrophy (GA) in spectral-domain optical coherence tomography (SD-OCT) images by constructing a voting system with deep neural networks without the use of retinal layer segmentation. An automatic GA segmentation method for SD-OCT images based on the deep network was constructed. The structure of the deep network was composed of five layers, including one input layer, three hidden layers, and one output layer. During the training phase, the labeled A-scans with 1024 features were directly fed into the network as the input layer to obtain the deep representations. Then a soft-max classifier was trained to determine the label of each individual pixel. Finally, a voting decision strategy was used to refine the segmentation results among 10 trained models. Two image data sets with GA were used to evaluate the model. For the first dataset, our algorithm obtained a mean overlap ratio (OR) 86.94% ± 8.75%, absolute area difference (AAD) 11.49% ± 11.50%, and correlation coefficients (CC) 0.9857; for the second dataset, the mean OR, AAD, and CC of the proposed method were 81.66% ± 10.93%, 8.30% ± 9.09%, and 0.9952, respectively. The proposed algorithm was capable of improving over 5% and 10% segmentation accuracy, respectively, when compared with several state-of-the-art algorithms on two data sets. Without retinal layer segmentation, the proposed algorithm could produce higher segmentation accuracy and was more stable when compared with state-of-the-art methods that relied on retinal layer segmentation results. Our model may provide reliable GA segmentations from SD-OCT images and be useful in the clinical diagnosis of advanced nonexudative AMD. Based on the deep neural networks, this study presents an accurate GA segmentation method for SD-OCT images without using any retinal layer segmentation results, and may contribute to improved understanding of advanced nonexudative AMD.

  1. PENGEMBANGAN RPP DAN LKPD BERBASIS REALISTIC MATHEMATICS EDUCATION DENGAN MEMERHATIKAN BEBAN KOGNITIF SISWA MATERI BANGUN RUANG SEDERHANA KELAS IV SD

    Directory of Open Access Journals (Sweden)

    Eko Waluyo

    2016-12-01

    Dalam suatu pembelajaran, dengan melibatkan siswa dalam menemukan suatu konsep materi matematika, siswa akan lebih mudah untuk memahami materi. Materi matematika dalam dipelajari dengan melibatkan obyek dunia nyata siswa sekolah dasar dengan memerhatikan beban kognitif siswa. Melalui bimbingan guru, siswa akan lebih mudah dalam menemukan konsep. Dalam tulisan ini dibahas pengembangan RPP dan LKPD berbasis Realistic Mathematics Education dengan memerhatikan beban kognitif siswa materi bangun ruang sederhana kelas IV SD. Model pengembangan yang digunakan model Plomp dengan lima fase. Hasil pengembangan RPP dan LKPD ini valid, praktis, dan efektif.

  2. The achievement of market study on a representative sample of companies in Romania about SD and CSR communication

    Directory of Open Access Journals (Sweden)

    Mihaela Bucur

    2014-05-01

    Full Text Available The purpose of this paper is to provide some results on how firms in Romania made communication on Corporate Social Responsibility (CSR and sustainable development (SD. The paper identifies the real pulse of Romanian business on the premise of communication responsible. Our approach shows how communication is performed inside and outside the company, the issues of CSR in the world customers, suppliers, business partners and customers. The findings demonstrate where are communication problems which components are satisfied through communication and where there should be improvements.

  3. PdS and SdP Receiver Functions Image of the Lithosphere underneath the Southern African Regions

    DEFF Research Database (Denmark)

    Soliman, Mohammad Youssof Ahmad; Thybo, Hans; Levander, A

    2009-01-01

    to 350 km depth by Jordan (1975), has to be revealed in more detail, and a better understanding should yield new insight into the origin of Earth’s early continents. We have reassessed the data from the Kaapvaal seismic experiment for lithosphere structure by application of PdS receiver functions...... these preliminary results, we are continuing the experiments by calculation of theoretical receiver functions for a range of models, and are assessing the combined integrated PdS and SdP receiver function response in combination with teleseismic tomography to provide an integrated high resolution model....

  4. Transformation of Mg-bearing amorphous calcium carbonate to Mg-calcite - In situ monitoring

    Science.gov (United States)

    Purgstaller, Bettina; Mavromatis, Vasileios; Immenhauser, Adrian; Dietzel, Martin

    2016-02-01

    The formation of Mg-bearing calcite via an amorphous precursor is a poorly understood process that is of relevance for biogenic and abiogenic carbonate precipitation. In order to gain an improved insight on the controls of Mg incorporation in calcite formed via an Mg-rich amorphous calcium carbonate (Mg-ACC) precursor, the precipitation of Mg-ACC and its transformation to Mg-calcite was monitored by in situ Raman spectroscopy. The experiments were performed at 25.0 ± 0.03 °C and pH 8.3 ± 0.1 and revealed two distinct pathways of Mg-calcite formation: (i) At initial aqueous Mg/Ca molar ratios ⩽ 1:6, Mg-calcite formation occurs via direct precipitation from solution. (ii) Conversely, at higher initial Mg/Ca molar ratios, Mg-calcite forms via an intermediate Mg-rich ACC phase. In the latter case, the final product is a calcite with up to 20 mol% Mg. This Mg content is significant higher than that of the Mg-rich ACC precursor phase. Thus, a strong net uptake of Mg ions from the solution into the crystalline precipitate throughout and also subsequent to ACC transformation is postulated. Moreover, the temporal evolution of the geochemical composition of the reactive solution and the Mg-ACC has no significant effect on the obtained ;solubility product; of Mg-ACC. The enrichment of Mg in calcite throughout and subsequent to Mg-ACC transformation is likely affected by the high aqueous Mg/Ca ratio and carbonate alkalinity concentrations in the reactive solution. The experimental results have a bearing on the formation mechanism of Mg-rich calcites in marine early diagenetic environments, where high carbonate alkalinity concentrations are the rule rather than the exception, and on the insufficiently investigated inorganic component of biomineralisation pathways in many calcite secreting organisms.

  5. Diagnose nutricional de cafeeiros da região do Alto Jequitinhonha (MG: normas dris e faixas críticas de nutrientes Nutritional diagnosis of coffee plantations in the Upper Jequitinhonha Valley, Minas Gerais State, Brazil: dris norms and critical nutrient ranges

    Directory of Open Access Journals (Sweden)

    Múcio Mágno de Melo Farnezi

    2009-08-01

    Full Text Available As normas do Sistema Integrado de Diagnose e Recomendação (DRIS ainda não foram estabelecidas para a cultura do café do Alto Jequitinhonha, MG, o que impede que o DRIS seja aplicado nos cafeeiros da região. A diagnose foliar, mediante o uso do DRIS e de faixas críticas de referência, destaca-se entre as ferramentas potenciais que permitem usar eficientemente os fertilizantes. Desse modo, este trabalho objetiva estabelecer as normas DRIS, bem como estimar os valores das faixas críticas dos nutrientes de referência para a diagnose nutricional de cafeeiros da região do Alto Jequitinhonha, por meio do DRIS. Determinaram-se os teores foliares de N, P, K, Ca, Mg, S, B, Cu, Fe, Mn e Zn em 52 lavouras cafeeiras, em duas safras (2005 e 2006. Foram selecionadas, para estabelecer as normas DRIS, 23 lavouras em cada safra com produtividade maior e igual a 30 sacas de grãos de café por hectare. As faixas críticas obtidas do DRIS, determinando-se a frequência com que o teor de cada nutriente das lavouras nas duas safras foi deficiente, adequado ou excessivo em relação aos padrões mencionados e teores considerados adequados pela literatura. As normas DRIS foram estabelecidas para cafeeiros da região do Alto Jequitinhonha e utilizadas para propor faixas críticas adequadas. Para isso, foram estabelecidos os valores para N (2,25-2,79 dag kg-1, P (0,18-0,22 dag kg-1, K (1,72-2,10 dag kg-1, Ca (1,26-1,51 dag kg-1, Mg (0,29-0,35 dag kg-1, S (0,13-0,32 dag kg-1, B (83,8-96,3 mg kg-1, Cu (5,7-9,3 mg kg-1, Fe (67,5-116,2 mg kg-1, Mn (219-422 mg kg-1 e Zn (17,4-30,0 mg kg-1, e faixas críticas adequadas para diagnose nutricional de cafeeiros da região do Alto Jequitinhonha, no Estado de Minas Gerais. Os cafezais da região em desequilíbrio apresentaram deficiência em P, K, S, B, Cu, Mn e Zn e excesso de Ca, Mg e Fe.In the Diagnosis and Recommendation Integrated System (DRIS, norms for coffee in the Upper Jequitinhonha Valley, Minas Gerais, Brazil

  6. PROFESIONALISME GURU SD / MI

    OpenAIRE

    Nursalim Nursalim

    2017-01-01

    Abstrak: Guru harus memiliki empat kompetensi dasar yaitu; kompetensi pedagogik, kom­petensi kepribadian, kompetensi sosial dan kompetensi profesional. Kompetensi profesional guru Sekolah Dasar/Madrasah Ibtidaiyah yaitu: 1) Menguasai materi, struktur, konsep, dan pola pikir keilmuan yang mendukung mata pelajaran yang diampu, 2) menguasai standar kompetensi dan kompetensi dasar mata pelajaran/bidang pengembangan yang diampu, 3) mengembangkan materi membelajaran yang diampu secara kreatif, ...

  7. PROFESIONALISME GURU SD / MI

    Directory of Open Access Journals (Sweden)

    Nursalim Nursalim

    2017-12-01

    Teachers must have four basic competencies namely; pedagogical competence, personality com- petence, social competence and professional competence. Professional competence of teachers of Primary School / primary islamic school includes 1 Mastering the materials, structure, concept, and scientific mindset that support the subjects being taught, 2 mastering the competency standard and basic competency of the subjects being taught, 3 developing the material being taught creatively, 4 develop professionalism in sustainably by doing reflective actions, 5 utilizing information and communication technology to communicate and develop themselves. Teacher professionalism can be leveled. Efforts that can be done in improving teacher profesionalism are: 1 reading books about education, 2 reading and writing scientific papers, 3 following the actual news from news media, 4 joining training, 5 following Teacher Working Group, 6 conducting Classroom Action Research (CAR, and 6 participating actively in professional organizations.

  8. FLOODPLAIN, MEADE COUNTY, SD

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — The Floodplain Mapping/Redelineation study deliverables depict and quantify the flood risks for the study area. The primary risk classifications used are the...

  9. HYDRAULICS, Sanborn COUNTY, SD

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — Recent developments in digital terrain and geospatial database management technology make it possible to protect this investment for existing and future projects to...

  10. Gastrointestinal transport of Ca2+ and Mg2+ during the digestion of a single meal in the freshwater rainbow trout.

    Science.gov (United States)

    Bucking, Carol; Wood, Chris M

    2007-04-01

    A diet containing an inert marker (ballotini beads, quantified by X-radiography) was used to quantify the transport of two essential minerals, Ca(2+) and Mg(2+) from the diet during the digestion and absorption of a single meal of commercial trout food (3% ration). Initially, net uptake of Ca(2+) was observed in the stomach followed by subsequent Ca(2+) fluxes along the intestine which were variable, but for the most part secretory. This indicated a net secretion of Ca(2+) along the intestinal tract resulting in a net assimilation of dietary Ca(2+) of 28%. Similar handling of Ca(2+) and Mg(2+) was observed along the gastrointestinal tract (GI), although net assimilation differed substantially between the cations, with Mg(2+) assimilation being close to 60%, mostly a result of greater uptake by the stomach. The stomach displayed the highest net uptake rates for both cations (1.5 and 1.3 mmol kg(-1) fish body mass for Ca(2+) and Mg(2+), respectively), occurring within 2 h following ingestion of the meal. Substantial secretions of both Ca(2+) and Mg(2+) were observed in the anterior intestine, which were attributed to bile and other intestinal secretions, while fluxes in the mid and posterior intestine were small and variable. The overall patterns of Ca(2+) and Mg(2+) handling in the GI tract were similar to those observed for Na(+) and K(+) (but not Cl(-)) in a previous study. Overall, these results emphasize the importance of dietary electrolytes in ionoregulatory homeostasis.

  11. Re-examining the 26Mg(α ,α')26Mg reaction: Probing astrophysically important states in 26Mg

    Science.gov (United States)

    Adsley, P.; Brümmer, J. W.; Li, K. C. W.; Marín-Lámbarri, D. J.; Kheswa, N. Y.; Donaldson, L. M.; Neveling, R.; Papka, P.; Pellegri, L.; Pesudo, V.; Pool, L. C.; Smit, F. D.; van Zyl, J. J.

    2017-11-01

    Background: The 22Ne(α ,n )25Mg reaction is one of the neutron sources for the s process in massive stars. The properties of levels in 26Mg above the α -particle threshold control the strengths of the 22Ne(α ,n )25Mg and 22Ne(α ,γ )26Mg reactions. The strengths of these reactions as functions of temperature are one of the major uncertainties in the s process. Purpose: Information on the existence, spin, and parity of levels in 26Mg can assist in constraining the strengths of the 22Ne(α ,γ )26Mg and 22Ne(α ,n )25Mg reactions, and therefore in constraining s -process abundances. Methods: Inelastically scattered α particles from a 26Mg target were momentum-analyzed in the K600 magnetic spectrometer at iThemba LABS, South Africa. The differential cross sections of states were deduced from the focal-plane trajectory of the scattered α particles. Based on the differential cross sections, spin and parity assignments to states are made. Results: A newly assigned 0+ state was observed in addition to a number of other states, some of which can be associated with states observed in other experiments. Some of the deduced Jπ values of the states observed in the present study show discrepancies with those assigned in a similar experiment performed at RCNP Osaka. The reassignments and additions of the various states can strongly affect the reaction rate at low temperatures. Conclusion: The number, location, and assignment of levels in 26Mg that may contribute to the 22Ne+α reactions are not clear. Future experimental investigations of 26Mg must have an extremely good energy resolution to separate the contributions from different levels. Coincidence experiments of 26Mg provide a possible route for future investigations.

  12. Production and Characterization of Alkaline Protease from a High Yielding and Moderately Halophilic Strain of SD11 Marine Bacteria

    Directory of Open Access Journals (Sweden)

    Hongxia Cui

    2015-01-01

    Full Text Available A marine bacterium SD11, which was isolated from sea muds (Geziwo Qinhuangdao Sea area, China, was used to produce thermostable alkaline serine nonmetal protease in the skim milk agar plate medium with 10% NaCl. The optimal temperature about the manufacture of the extracellular protease was ~60°C. The crude enzyme was stable at 20–50°C. The activity was retained to 60% and 45% after heating for 1 h at 60 and 70°C, respectively. The protease was highly active in a wide pH scope (8.0–10.0 and maximum protease activity exhibited at pH 10.0. The activity was restrained by phenylmethylsulfonyl fluoride (PMSF but mildly increased (~107% in the presence of ethylenediaminetetraacetic acid (EDTA, indicating that the production contains serine-protease(s and nonmetal protease(s. Moreover, the crude alkaline protease was active with the 5 mM Ca2+, Mn2+, Zn2+, Cu2+, Na+, and K+ that existed separately. In addition, the protease showed superduper stability when exposed to an anionic surfactant (5 mM SDS, an oxidizing agent (1% H2O2, and several organic solvents (methanol, isopropanol, and acetone. These results suggest that the marine bacterium SD11 is significant in the industry from the prospects of its ability to produce thermally stable alkaline protease.

  13. Vibrational relaxation dynamics of SD molecules in As2S3: Observation of an anomalous isotope effect

    International Nuclear Information System (INIS)

    Engholm, J.R.; Happek, U.; Rella, C.W.

    1995-01-01

    It is generally assumed that the vibrational relaxation of molecular impurities in crystals and glasses mainly depends on the order of the decay process, with lower order processes leading to more rapid relaxation (a behavior that is known under the term open-quotes gap-lawclose quotes). Here we present measurements that contradict this assumption. Using high intensity psec pulses of the Stanford FEL we measured the relaxation rate of the SD vibrational stretch mode (at a frequency of 1800 cm) by applying a pump-probe technique. We find relaxation rates on the order of 2x10 9 sec -1 , which are a factor of 2 lower than those found for the isotope molecule SH (at a frequency of about 2500 cm - 1 ) in the same host 1 . We recall that the relaxation of the SD vibrational stretch mode is controlled by a lower order process as compared to the SH molecule, which is due to the smaller number of host vibrational quanta to match the energy of the stretch mode; a fact we have confirmed experimentally by temperature dependent relaxation measurements. Thus our remits are in marked contrast to the so-called open-quotes Gap-Lawclose quotes and emphasize the importance of the molecule - host coupling in the relaxation dynamics

  14. A Single Recessive Mutated Gene (Sd237-1) Controlling Semi-Dwarf Plant Stature of Rice

    International Nuclear Information System (INIS)

    Sobrizal

    2009-01-01

    Dwarfism is a valuable trait in crop breeding, because it increases lodging resistance and decreases damages due to wind and rain. During the course of this study, a semi-dwarf mutant was successfully induced through 200 Gy gamma ray irradiated KI 237 seeds. KI 237 is a pure line with high yield potency, developed through an Indica-Japonica cross of IR36 / Koshihikari. The selected semi-dwarf plant reached 60 - 62 % of plant height of original plant KI 237 at the mature stage. The length of inter nodes, panicle, and seed were also compared between these two plants. The retardation of the 1 st (uppermost) inter nodes was 24 %, moreover, the retardation of panicle and seed length were only 10 % and 2 %, respectively. The elongation pattern of the inter nodes in this mutant was almost the same as sd1 (Dee-geo-woo-gen), the original parent of the first release modern rice variety, but their performances were different. Based on the segregation analysis in M 2 and M 3 generation it was concluded that this mutant was controlled by a single recessive mutated gene. This gene was designated as sd 237-1 . This mutant should be useful as a genetic resource for the improvement of KI 237 line through back-cross breeding as well as be developed further in breeding program directly to be a new high yielding mutant variety. (author)

  15. Survival of free and microencapsulated human-derived oral probiotic Lactobacillus paracasei SD1 in orange and aloe vera juices

    Directory of Open Access Journals (Sweden)

    Rawee Teanpaisan

    2015-06-01

    Full Text Available Microencapsulation was evaluated as a means of preserving Lactobacillus paracasei SD1, a human-derived strain with probiotic potential, in orange and aloe vera juices. The microencapsulation parameters included alginate concentration, calcium chloride concentration and hardening-time, and the efficacy of microencapsulation to preserve the survival of microencapsulated bacteria compared to free cells during exposure in fruit juices were determined. The results revealed that the viable count of free-cell form markedly decreased compared to microencapsulated form. The microencapsulation of 2% alginate (w/v and 0.05 M CaCl2 gave the best result to preserve the probiotic. It was found that viability of microencapsulated probiotic bacteria was significantly higher than free-cell in fruit juices during 8 weeks of storage time in the refrigerator. The potential probiotic trait related to inhibitory effect was not affected after microencapsulation process. In summary, the microencapsulation method may be an alternative way of preserving the viability of probiotic L. paracasei SD1.

  16. Peningkatan Karakter Mahasiswa Program Studi PGSD pada Mata Kuliah Pengembangan Pembelajaran IPA SD di Universitas Muhammadiyah Sidoarjo

    Directory of Open Access Journals (Sweden)

    Enik Setiyawati

    2017-05-01

    Full Text Available PGSD student's character can be seen from various aspects of the attitude that must be owned by an educator, especially educators in primary school. Some of these aspects are honesty, cooperation, discipline, responsibility, and independence. Aspects of honesty student still low category, the aspect of cooperation, discipline, responsibility, and independence are being categorized. The purpose of this research is to describe the increase in student character study program PGSD On Learning Course Development IPA SD At the University of Muhammadiyah Sidoarjo. In conducting the study, researchers used a classroom action research (Classroom Action Research. Based on the results of the study in the first cycle and the second cycle, it can be seen that there is a rise in the value of the character of students in primary school teaching courses Learning Development IPA SD from the first cycle to the second cycle. Value of character in the first cycle of 71.4, while the value of the character in the second cycle of 98.5. This shows that there is an increase of 27.1 of all indicators of character shown by students of primary school teaching course on development of Elementary Science Lesson.

  17. PENANAMAN KESADARAN DAN TANGGUNGJAWAB TERHADAP LINGKUNGAN HIDUP MELALUI GREEN SCHOOL DI SD NEGERI DEMAKAN 02 TAHUN PELAJARAN 2014/2015

    Directory of Open Access Journals (Sweden)

    Pranichayudha Rohsulina

    2015-09-01

    Full Text Available Abstract This devotion aims to instill awareness and responsibility towards the environment in elementary school students. This activity was conducted in 02 primary schools with class participants Demakan 3, 4, and 5 in groups. Service activities is carried out through four stages, includes the extension (socialization, implementation, monitoring, and evaluation of results. Results devotion shows that primary school Demakan 02 Sukoharjo related to green school in the school can be taken several conclusions are: 1 There is the awareness and responsibility of environmental awareness green in SD N Demakan 02 Sukoharjo. 2 Farming with students of all ages to encourage their interest in nature and enthusiasm early in life. 3 This devotion succeeded yield as much as 110 pot polybag. Keywords: green school, awareness, responsibility Abstract This devotion aims to instill awareness and responsibility towards the environment in elementary school students. This activity was conducted in 02 primary schools with class participants Demakan 3, 4, and 5 in groups. Service activities is carried out through four stages, includes the extension (socialization, implementation, monitoring, and evaluation of results. Results devotion shows that primary school Demakan 02 Sukoharjo related to green school in the school can be taken several conclusions are: 1 There is the awareness and responsibility of environmental awareness green in SD N Demakan 02 Sukoharjo. 2 Farming with students of all ages to encourage their interest in nature and enthusiasm early in life. 3 This devotion succeeded yield as much as 110 pot polybag. Keywords: green school, awareness, responsibility

  18. Pengembangan Subject Specific Pedagogy (SSP Tematik Berbasis Local Wisdom Untuk Membangun Karakter Hormat dan Kepedulian Siswa SD

    Directory of Open Access Journals (Sweden)

    Amaliyah Ulfah

    2018-01-01

    Full Text Available This study aims at generating possible thematic Subject Specific Pedagogy (SSP based on local wisdom and examining the results teachers and students perception on the pedagogical approach developed in the preliminary field testing. Drawing upon the notion of research and development by Borg & Gall, this research was conducted through different stages involving information gathering, planning, developing preliminary product, preliminary field testing, and revising. The subjects were a small group of second grade students of SD Muhammadiyah Bodon and SD Muhammadiyah Sidoarum Yogyakarta. Each consists of 10 students. The data gathering instrument consists of product validation, character observation sheets, and teacher assessment sheets. The data gathering instrument consists of product validation tool, character observation sheets, and teachers’ assessment sheets. The SSP product generated in this study consists of lesson plans, teaching materials, worksheets, and expert perception. According to the experts of media, materials, and evaluation, the SSP product is in good categories. First grade teachers result a good score to the syllabus and lesson plans, while the worksheets and evaluation are in very good category. The results from the students responses to the textbooks is 78, which is in very good category, while the students worksheets score 71 which includes in excellent category. Therefore, the developed thematic SSP based on local wisdom can be declared appropriate for use in learning.

  19. Antibacterial biodegradable Mg-Ag alloys

    Directory of Open Access Journals (Sweden)

    D Tie

    2013-06-01

    Full Text Available The use of magnesium alloys as degradable metals for biomedical applications is a topic of ongoing research and the demand for multifunctional materials is increasing. Hence, binary Mg-Ag alloys were designed as implant materials to combine the favourable properties of magnesium with the well-known antibacterial property of silver. In this study, three Mg-Ag alloys, Mg2Ag, Mg4Ag and Mg6Ag that contain 1.87 %, 3.82 % and 6.00 % silver by weight, respectively, were cast and processed with solution (T4 and aging (T6 heat treatment.The metallurgical analysis and phase identification showed that all alloys contained Mg4Ag as the dominant β phase. After heat treatment, the mechanical properties of all Mg-Ag alloys were significantly improved and the corrosion rate was also significantly reduced, due to presence of silver. Mg(OH2 and MgO present the main magnesium corrosion products, while AgCl was found as the corresponding primary silver corrosion product. Immersion tests, under cell culture conditions, demonstrated that the silver content did not significantly shift the pH and magnesium ion release. In vitro tests, with both primary osteoblasts and cell lines (MG63, RAW 264.7, revealed that Mg-Ag alloys show negligible cytotoxicity and sound cytocompatibility. Antibacterial assays, performed in a dynamic bioreactor system, proved that the alloys reduce the viability of two common pathogenic bacteria, Staphylococcus aureus (DSMZ 20231 and Staphylococcus epidermidis (DSMZ 3269, and the results showed that the killing rate of the alloys against tested bacteria exceeded 90%. In summary, biodegradable Mg-Ag alloys are cytocompatible materials with adjustable mechanical and corrosion properties and show promising antibacterial activity, which indicates their potential as antibacterial biodegradable implant materials.

  20. The NPOESS Preparatory Project (NPP) Science Data Segment (SDS) Data Depository and Distribution Element (SD3E) System Architecture

    Science.gov (United States)

    Ho, Evelyn L.; Schweiss, Robert J.

    2008-01-01

    The National Polar-orbiting Operational Environmental Satellite System (NPOESS), the U.S. Government's future low-Earth orbiting satellite system, will monitor global weather and environmental conditions. Serving as a risk reduction for NPOESS, the NPOESS Preparatory Project (NPP) will provide remotely sensed atmospheric, land, ocean, ozone, and sounder data that will serve the meteorological and global climate change scientific communities. The National Aeronautics and Space Administration (NASA) NPP Science Data Segment's (SDS) primary role is to independently assess the quality of the NPP science and environmental data records for their ability to support climate research. The SDS is composed of nine elements; an input element that receives data from the operational agencies and acts as a buffer, a calibration analysis element, five elements devoted to measurement based quality assessment, an element used to test algorithmic improvements, and an element that provides overall science direction. Each element requires a set of sensor specific science data products for their evaluation. There are four NPP sensors that will be flown on the NPP observatory. They are the Visible Infrared Imagining Radiometer Suite (VIIRS), the Advanced Technology Microwave Sounder (ATMS), the Cross-Track Infrared Sounder (CrIS), and the Ozone Mapper/Profiler Suite (OMPS). It is estimated that these four sensors combined will make daily data requests for approximately six terabytes of NPP science products from the operational data providers. As a result, issues associated with duplicate data requests, data transfers of large volumes of diverse products, and data transfer failures raised concerns with respect to the network traffic and bandwidth consumption. Therefore, a central data broker system for receiving and buffering data requests and data products for the SDS was developed. The data element for this system is called the SDS Data Depository and Distribution Element (SD3E). It

  1. Intra-individual comparison of different contrast media concentrations (300 mg, 370 mg and 400 mg iodine) in MDCT

    Energy Technology Data Exchange (ETDEWEB)

    Behrendt, Florian F.; Keil, Sebastian; Plumhans, Cedric; Guenther, Rolf W. [RWTH Aachen University, Department of Diagnostic Radiology, University Hospital, Aachen (Germany); Pietsch, Hubertus; Jost, Gregor; Sieber, Martin A.; Seidensticker, Peter [Bayer Schering Pharma AG, Berlin (Germany); Mahnken, Andreas H. [RWTH Aachen University, Department of Diagnostic Radiology, University Hospital, Aachen (Germany); RWTH Aachen University, Applied Medical Engineering, Helmholtz-Institute for Biomedical Engineering, Aachen (Germany)

    2010-07-15

    To compare intra-individual contrast enhancement in multi-detector-row computed tomography (MDCT) using contrast media (CM) containing 300, 370 and 400 mg iodine per ml (mgI/ml). Six pigs underwent repeated chest MDCT using three different CM (iopromide 300, iopromide 370, iomeprol 400). An identical iodine delivery (IDR) rate of 1.5 gI/s and a constant total iodine dose of 300 mg/kg body weight were used. Dynamic CT were acquired at the level of the pulmonary artery, and the ascending and descending aorta. After the time enhancement curves were computed, the pulmonary and aortic peak enhancement, time to peak and plateau time above 300 HU were calculated. Intra-individual peak contrast enhancement was significantly higher for the 300 mgI/ml contrast medium compared with the 370 and 400 mgI/ml media: pulmonary trunk 595 HU vs 516 HU (p = 0.0093) vs 472HU (p = 0.0005), and aorta 505 HU vs 454 HU (p = 0.0008) vs 439 HU (p = 0.0001), respectively. Comparison of time to peaks showed no significant difference. Plateau times were significantly longer for the 300 mgI/ml than for the 370 and 400 mgI/ml CM at all anatomical sites. Given normalised IDR and total iodine burden, the use of CM with a standard concentration with 300 mg iodine/ml provides improved contrast enhancement compared with highly concentrated CM in the chest. (orig.)

  2. Compositional and structural variabilities of Mg-rich iron oxide spinels from tuffite

    Directory of Open Access Journals (Sweden)

    W. N. Mussel

    1999-12-01

    Full Text Available Maghemite (γFe2O3 from tuffite is exceptionally rich in Mg, relatively to most of those reportedly found in other mafic lithosystems. To investigate in detail the compositional and structural variabilities of this natural magnetic iron oxide, sets of crystals were isolated from samples collected at different positions in a tuffite weathering mantle. These sets of crystal were individually powdered and studied by X-ray diffractometry, Mössbauer spectroscopy, magnetization measurements and chemical analysis. Lattice parameter of the cubic cell (a0 was found to vary from 0.834(1 to 0.8412(1 nm. Lower a0-values are characteristic of maghemite whereas higher ones are related to a magnetite precursor. FeO content ranges up to 17 mass % and spontaneous magnetization ranges from 8 to 32 J T-1 kg-1. Zero-field room temperature Mössbauer spectra are rather complex, indicating that the hyperfine field distributions due to Fe3+ and mixed valence Fe3+/2+ overlap. The structural variabilities of the (Mg, Ti-rich iron oxide spinels is essentially related to the range of chemical composition of its precursor (Mg, Ti-rich magnetite, and probably to the extent to which it has been oxidized during transformation in soil.

  3. Order-Order Transition of C → sdG → sL → S in ABC Triblock Copolymer Thin Film Induced by Solvent Vapor.

    Science.gov (United States)

    Luo, Chunxia; Huang, Weihuan; Han, Yanchun

    2009-04-01

    The morphology transition of polystyrene-block-poly(butadiene)-block-poly(2-vinylpyridine) (SBV) triblock thin film induced in benzene vapor showing weak selectivity for PS is investigated. The order-order transitions (OOT) in the sequence of core-shell cylinders (C), sphere in 'diblock gyroid' (sdG), sphere in lamella (sL) and sphere (S) are observed. The projection along (111) direction in Gyroid phase (sdG(111)) is found to epitaxially grow from C(001) in the film. Instead of sdG(111), sdG(110)(0.1875) develops to the phase of sL. Consequently, the film experiences the transition sequence of sdG(111) → sdG(211) → sdG(110)(0.25)  → sdG(110)(0.1875) between C and sL. The mechanism is analyzed from the total surface area of the blocks. Copyright © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  4. In situ preparation of MgCo2O4 nanosheets on Ni-foam as a binder-free electrode for high performance hybrid supercapacitors.

    Science.gov (United States)

    Vijayakumar, Subbukalai; Nagamuthu, Sadayappan; Ryu, Kwang-Sun

    2018-05-15

    A binder-free, MgCo2O4 nanosheet-like architecture was prepared on Ni-foam using a hydrothermal method. MgCo2O4/Ni-foam was characterized by X-ray diffraction, field emission scanning electron microscopy (FESEM), and transmission electron microscopy techniques. The FESEM image revealed a nanosheet array-like architecture. The MgCo2O4 nanosheets grown on Ni-foam exhibited the maximum specific capacity of 947 C g-1 at a specific current of 2 A g-1. Approximately 96% of the specific capacity was retained from the maximum specific capacity after 5000 continuous charge-discharge cycles. This hybrid device exhibited a maximum specific capacity of 52 C g-1 at a specific current of 0.5 A g-1, and also exhibited a maximum specific energy of 12.99 W h kg-1 at a specific power of 448.7 W kg-1. These results confirmed that the binder-free MgCo2O4 nanosheets grown on Ni-foam are a suitable positive electrode material for hybrid supercapacitors.

  5. Halofuginone ameliorates inflammation in severe acute hepatitis B virus (HBV-infected SD rats through AMPK activation

    Directory of Open Access Journals (Sweden)

    Zhan WL

    2017-10-01

    Full Text Available Weili Zhan, Yanhong Kang, Ning Chen, Chongshan Mao, Yi Kang, Jia Shang Department of Infectious Diseases, Henan Provincial People’s Hospital, Zhengzhou, Henan, China Abstract: The hepatitis B virus (HBV has caused acute and chronic liver diseases in ~350 million infected people worldwide. Halofuginone (HF is a plant alkaloid which has been demonstrated to play a crucial role in immune regulation. Our present study explored the function of HF in the immune response of HBV-infected Sprague Dawley (SD rats. Plasmid containing pCDNA3.1-HBV1.3 was injected in SD rats for the construction of an acute HBV-infected animal model. Our data showed that HF reduced the high concentrations of serum hepatitis B e-antigen, hepatitis B surface antigen, and HBV DNA induced by HBV infection. HF also reduced the number of T helper (Th17 cells and the expression of interleukin (IL-17 compared with the pCDNA3.1-HBV1.3 group. Moreover, pro-inflammatory cytokine levels (IL-17, IL-23, interferon-γ, and IL-2 were downregulated and anti-inflammatory cytokine levels (IL-4 and IL-13 were upregulated by HF. Through further research we found that the expression of AMP-activated protein kinase (AMPK and IKBA which suppressed NF-κB activation was increased while the expression of p-NF-κB P65 was decreased in pCDNA3.1-HBV1.3+HF group compared with pCDNA3.1-HBV1.3 group, indicating that HF may work through the activation of AMPK. Finally, our conjecture was further verified by using the AMPK inhibitor compound C, which counteracted the anti-inflammation effect of HF, resulting in the decreased expression of AMPK, IKBA and increased expression of p-NF-κB P65 and reduced number of Th17 cells. In our present study, HF was considered as an anti-inflammatory factor in acute HBV-infected SD rats and worked through AMPK-mediated NF-κB p65 inactivation. This study implicated HF as a potential therapeutic strategy for hepatitis B. Keywords: halofuginone, hepatitis B virus

  6. PENGEMBANGAN RPP TEMATIK-INTEGRATIF UNTUK MENINGKATKAN KARAKTER KERJA KERAS DI KELAS 1 SD N 2 SOKARAJA TENGAH

    Directory of Open Access Journals (Sweden)

    Sri Muryaningsih

    2015-07-01

    Full Text Available Penelitian ini bertujuan untuk menghasilkan RPP tematik-integratif dalam peningkatan karakter kerja keras dan mengetahui efektifitas penerapan RPP tematik-integratif dalam peningkatan karakter kerja keras bagi peserta didik kelas 1 SD N 2 Sokaraja Tengah. Penelitian ini menggunakan langkah pengembangan menurut Borg and Gall.Hasil penelitian menunjukkan bahwa produk yang dikembangkan dalam penelitian ini layak digunakan sesuai hasil penilaian ahli teknologi pembelajarann dan ahli media pembelajaran terhadap produk yang dikembangkan dengan kriteria “sangat baik” dengan bukti perolehan skor total validasi sebesar 39 dan 38. Produk yang dikembangkan juga efektif diterapkan sesuai dengan hasil uji coba dilapangan. Keefektivan RPP hasil pengembangan dilihat dari hasil keterlaksanaan RPP adalah berkriteria “sangat baik” dengan bukti keterlaksanaan mencapai 100%. Kenaikan karakter kerja keras dari kriteria “cukup” menjadi kriteria “baik”. Ketuntasan hasil belajar kelas eksperimen mencapai 93,54% dan ketuntasan hasil belajar kelas kontrol mencapai 61,3%. Kata Kunci: RPP tematik-integratif, pendidikan karakter   DEVELOPING A THEMATIC-INTEGRATED LESSON PLAN TO INCREASE THE HARD-WORKING CHARACTER OF GRADE 1 STUDENTS OF SD N 2 SOKARAJA TENGAH Abstract This research is aimed to develop thematic-integrated lesson plan to increase hard-working character and to know the effectiveness of the thematic-integrated lesson plan in the increase of hard-workig character of grade 1 students of SD N 2 Sokaraja Tengah. This research is a research and development study from Borg & Gall model. The result shows that the product developed in this research is suitable to use.  The result of teaching technology and learning media expert analysis on this product shows that it is ”very good”, as proved by the validation total scores of 39 and 38 out of 45. This product is also effective to apply as shown the result of field testing of the lesson plan. The

  7. The effect of the MgO buffer layer thickness on magnetic anisotropy in MgO/Fe/Cr/MgO buffer/MgO(001)

    Energy Technology Data Exchange (ETDEWEB)

    Kozioł-Rachwał, Anna, E-mail: a.koziolrachwal@aist.go.jp [National Institute of Advanced Industrial Science and Technology, Spintronics Research Center, Tsukuba, Ibaraki 305-8568 (Japan); AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Kraków (Poland); Nozaki, Takayuki; Zayets, Vadym; Kubota, Hitoshi; Fukushima, Akio; Yuasa, Shinji [National Institute of Advanced Industrial Science and Technology, Spintronics Research Center, Tsukuba, Ibaraki 305-8568 (Japan); Suzuki, Yoshishige [National Institute of Advanced Industrial Science and Technology, Spintronics Research Center, Tsukuba, Ibaraki 305-8568 (Japan); Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531 (Japan)

    2016-08-28

    The relationship between the magnetic properties and MgO buffer layer thickness d was studied in epitaxial MgO/Fe(t)/Cr/MgO(d) layers grown on MgO(001) substrate in which the Fe thickness t ranged from 0.4 nm to 1.1 nm. For 0.4 nm ≤ t ≤ 0.7 nm, a non-monotonic coercivity dependence on the MgO buffer thickness was shown by perpendicular magneto-optic Kerr effect magnetometry. For thicker Fe films, an increase in the buffer layer thickness resulted in a spin reorientation transition from perpendicular to the in-plane magnetization direction. Possible origins of these unusual behaviors were discussed in terms of the suppression of carbon contamination at the Fe surface and changes in the magnetoelastic anisotropy in the system. These results illustrate a method to control magnetic anisotropy in MgO/Fe/Cr/MgO(d) via an appropriate choice of MgO buffer layer thickness d.

  8. Ultraviolet spectra of Mg in liquid helium

    International Nuclear Information System (INIS)

    Moriwaki, Y.; Morita, N.

    1999-01-01

    Emission and absorption spectra of Mg atoms implanted in liquid helium have been observed in the ultraviolet region. We have presented a model of exciplex formation of Mg-He 10 and found that this model is more suitable for understanding the dynamics in the 3s3p 1 P→3s 21 S transition than the bubble model. (orig.)

  9. Transportation Structure Analysis Using SD-MOP in World Modern Garden City: A Case Study in China

    Directory of Open Access Journals (Sweden)

    Jiuping Xu

    2012-01-01

    Full Text Available The idea of the “garden city” was developed theoretically to offer solutions to serious city development problems such as traffic congestion, population, and environmental pollution, among which the transportation is considered the most important. The question is how to develop balanced transportation in a garden city. Transportation is a complex system, particularly in a garden city. Therefore, we establish a new approach named the transportation multiobjective optimization system dynamics  (SD-MOP model, which firstly calculates the optimal proportion of different transport means with an MOP approach and then applies them to the dynamic transportation system to analyze the results and analyze the influence on the whole system using different transportation means variation. In this paper, we take Chengdu as an example, one of the few cities in the world declared as building a garden city, and then develop some recommendations about world modern garden city transportation system development.

  10. Riwayat gizi buruk masa lalu (stunted tidak berhubungan dengan prestasi belajar siswa SD di Kabupaten Sikka Nusa Tenggara Timur

    Directory of Open Access Journals (Sweden)

    Tobianus Hasan

    2016-08-01

    terutama balita berisiko tinggi mengalami masalah kesehatan dan gizi dengan persentase 43,3 pada tahun 2009 dan 42,3 pada tahun 2010. Persentase kelulusan siswa SD di Kecamatan Mego pada tahun ajaran 2009/2010 menempati urutan ke-15 dari 21 kecamatan yang ada di Kabupaten Sikka.Tujuan: Untuk mengetahui hubungan antara status gizi masa lalu (stunted dan prestasi belajar siswa SD Kecamatan Mego, di Kabupaten Sikka NTT.Metode: Jenis penelitian ini adalah observasional dengan rancangan penelitian cross sectional study dengan sample penelitian meliputi anak sekolah dasar (SD kelas III yang memenuhi kriteria inklusi dan eksklusi.Hasil: Hasil penelitian menunjukan bahwa secara bivariat kondisi stunted mempengaruhi prestasi belajar (p=0,027, selain stunted, faktor luar yang mempengaruhi prestasi belajar adalah pendidikan ibu (p=0,001, pendidikan ayah (p=0,001 dan intelegensi anak (p=0,027 Secara multivariat yang paling mempengaruhi prestasi belajar siswa SD di Kecamatan Mego adalah pendidikan ayah dan ibu. Tetapi faktor yang paling dominan mempengaruhi prestasi belajar siswa SD hanya pendidikan ibu (p=0,001.Kesimpulan: Sebagian besar siswa yang menderita stunted memiliki prestasi belajar yang rendah (87,2% dan stunted tidak memiliki hubungan yang signifikan dengan prestasi belajar. Prestasi belajar siswa dipengaruhi oleh pendidikan orang tua.KATA KUNCI: stunted, prestasi belajar

  11. Alpha-cluster transfer process in colliding S-D shell nuclei using the energy density formalism

    International Nuclear Information System (INIS)

    Puri, R.K.; Gupta, R.K.

    1992-01-01

    The energy density formalism is used for the first time to study the resonance-like behaviour of the α-cluster transfer process, observed for collisions between the s-d shell nuclei. Within the dynamical fragmentation theory, this formalism is shown to give better the observed alpha resonance-like mass spectrum of colliding α-particle nuclei and its suppression on adding neutrons to either of the α-particle reaction partners, compared with the earlier calculations of one of us and collaborators using the proximity pocket formula. For composite systems with N>>Z, these calculations predict an explicit preference for transfer of those clusters that are observed in recent cluster radioactivity. (Author)

  12. Research on Scenic Spot’s Sustainable Development Based on a SD Model: A Case Study of the Jiuzhai Valley

    Directory of Open Access Journals (Sweden)

    Zhixue Liao

    2014-07-01

    Full Text Available In the field of tourism, the development of tourist attractions is playing an increasingly crucial role in tourism economy, regional economy and national economy. However, the eco-environment has been damaged while tourism industry develops rapidly. Thus, to solve the contradiction between tourism development and eco-environment protection is the key to achieving sustainable development of tourism. This paper builds a SD model, which is based on the analysis of the economic subsystem and environment subsystem, to promote sustainable development. In order to show the effectiveness of the model, Jiuzhai Valley is taken as the research object and a decisive basis is provided for the path adjustment of sustainable development in tourist scenic.

  13. Applied reliability assessment for the passive safety systems of nuclear power plants (NPPs) using system dynamics (SD)

    International Nuclear Information System (INIS)

    Kim, Yun Il; Woo, Tae Ho

    2018-01-01

    The passive system by the free-fall is investigated in the accident of nuclear power plants (NPPs). The complex algorithm of the system dynamics (SD) modeling is done in the passive cooling system. The nuclear passive system by free-fall is successfully modeled for the loss of coolant accident (LOCA). Conventional passive system of gravity or natural circulation is working only when the piping systems is in the good condition. The external coolant supply system is introduced in the case of the piping system failure. The water is poured into the reactor through the guiding piping or tube. If the explosion happens, the coolants could be showering into the reactor core and its building. New kind of passive system is expected successfully in the on-site black out where the drone could be operated by battery or engine.

  14. Safety assessment for electricity generation failure accident of gas cooled nuclear power plant using system dynamics (SD) method

    Energy Technology Data Exchange (ETDEWEB)

    Woo, Tae Ho [Seoul National Univ. (Korea, Republic of). Dept. of Nuclear Engineering

    2013-04-15

    The power production failure happens in the loss of coolant of the nuclear power plants (NPPs). The air ingress is a serious accident in gas cooled NPPs. The quantification of the study performed by the system dynamics (SD) method which is processed by the feedback algorithms. The Vensim software package is used for the simulation, which is performed by the Monte-Carlo method. Two kinds of considerations as the economic and safety properties are important in NPPs. The result shows the stability of the operation when the power can be decided. The maximum value of risk is the 11.77 in 43rd and the minimum value is 0.0 in several years. So, the success of the circulation of coolant is simulated by the dynamical values. (orig.)

  15. Complex risk analysis for loss of electric power in liquid metal nuclear reactor by system dynamics (SD) method

    Energy Technology Data Exchange (ETDEWEB)

    Woo, Tae Ho [Seoul National Univ. (Korea, Republic of). Dept. of Nuclear Engineering

    2012-07-15

    The power stabilization of the nuclear power plants (NPPs) is investigated in the aspect of the liquid metal coolant. The quantification of the risk analysis is performed by the system dynamics (SD) method which is processed by the feedback and accumulation complex algorithms. The Vensim software package is used for the simulations, which is supported by the Monte-Carlo method. There are 2 kinds of considerations as the economic and safety properties. The result shows the stability of the operations when the power can be decided. This shows the higher efficiency of the reactor. The failure frequency is 16/60 = 27%. In the event of Power Stabilized, the failure event is in the quite lower frequency rate. The commercial use of the reactor is important in the operations. (orig.)

  16. Effect of radiation-induced heart injury on content of cardiac troponin I and endothelin-1 in SD rats

    International Nuclear Information System (INIS)

    Xu Jiuhong; Gao Yaoming; Zhang Junning; Li Xinli

    2011-01-01

    Objective: To investigate the effect of radiation-induced heart injury (RIHD) on cardiac endothelin-1 (ET-1) and cardiac troponin I (cTnI) in SD rats, and the possibility regarding ET-1 and cTnI as biomarker of RIHD was also explored. Methods: Healthy female SD rats were randomly divided into two groups: the control group (C) and irradiation group (R). The rats in R group were irradiated with linear accelerator at a single dose of 25 Gy. Five milliliters blood was collected from the inferior vena cava on the 5th, 15th, 30th, 60th day after radiation. Blood was centrifuged and serum was collected. Content of ET-1 and cTnI in blood serum were detected by ELISA kits. Results: The content of ET-1 in the R group was always higher than that in the C group (P<0.01) during the whole process, and the difference between two groups had statistical significance only on the 5th day (P<0.01) and 15th day (P<0.05) after radiation. However, the content of cTnI in R group was higher than that in the C group within 30 days after radiation, then decreased, and only on the 15th day (P<0.05) and the 30th day (P<0.01) after radiation, there was statistical difference between two groups. Conclusion: The content of ET-1 and cTnI in blood serum increase obviously after receiving RIHD, so these two indicators can be used as markers to diagnose early RIHD sensitively and specifically. (authors)

  17. Kebiasaan jajan dan pola makan serta hubungannya dengan status gizi anak usia sekolah di SD Sonosewu Bantul Yogyakarta

    Directory of Open Access Journals (Sweden)

    Kurnia Noviani

    2016-08-01

    Full Text Available ABSTRACTBackground: Elementary school children are in the developmental age, thus need nutritions with good and proper quality and quantity. Nutrient needs can be fulfilled through eating habits. Snacking habit can also contribute to nutritional status in children if the snack consumed has good quality in term of the typeand quantity.Objectives: To understand the relationship between snacking habit and diet with nutritional status of elementary school children in SD Sonosewu Bantul Yogyakarta.Methods: This study was an observational research with cross sectional approach. This study population was all students in SD Sonosewu Bantul Yogyakarta grades III, IV, V, that were 160 respondents. The sample used in this study was 65 people selected by using simple random sampling. The process ofselecting a random sample was based on the random number table. The research instruments used were questionnaires, form of 24 -hour food recall for 1 day, bathroom scales, and microtoise. The collected data was analyzed by using a statistical test chi-square.Results: Respondents who had frequent snacking habit with a normal nutritional status was 27 respondents (81%, whereas those who had less frequent snacking habit with wasting nutritional status was 7 respondents (21.9%. Respondents with a good diet (>80% RDA with wasting nutritional status was 9 respondents (75% and respondents who had bad diet with normal nutritional status was 34 respondents (66%. Chi-Square analysis in the relationship between snacking habit and nutritional status obtained 0.781 p value (p>0.05 which mean that there was no statistically significant of relationship between snacking habits and child’s nutritional status. Whereas Chi-Square analysis of diet and nutritional status showed a significant relationship with 0.008 p value (p<0.05 means that there was a relationship between diet and nutritional status.Conclusions: There was a relationship between diet and nutritional

  18. Optical absorption and thermoluminescence in Mg O, Mg O:Ni and Mg O:Li irradiated at room temperature

    International Nuclear Information System (INIS)

    Delgado, L.

    1984-01-01

    Optical absorption and thermoluminescence (TL) studies in Mg O, Mg O:Ni and Mg O:Li irradiated at room temperature are presented. In pure Mg O the thermal annihilation of Fe3+ by recombination with thermally released electrons at ∼ 90 and 175 degree centigree and the V center annealing by hole release up to 100 degree centigree cause the observed glow peaks at these temperatures. The TL excitation spectrum shows two maxima at 245 nm (electron center) and 288 nm (Fe3+). In Mg O:Ni X irradiation induces Fe 2 + →- Fe 3 + and Ni 2 + → Ni 3 + oxidations. Two TL emission bands centered at 110 degree centigree (red) and 80 o C (green) are assigned to electron release and their recombination at Fe 3 + and Ni 3 + respectively. In Mg O:Li two TL emission bands, one blue (430 nm) and the other red (730 nm) with excitation maxima at 245 nm (electron center) and 200 nm (hole center) respectively are observed. No V-center formation was detected in both Ni and Li doped samples. (Author) 42 refs

  19. Mg2BIV: Narrow Bandgap Thermoelectric Semiconductors

    Science.gov (United States)

    Kim, Il-Ho

    2018-05-01

    Thermoelectric materials can convert thermal energy directly into electric energy and vice versa. The electricity generation from waste heat via thermoelectric devices can be considered as a new energy source. For instance, automotive exhaust gas and all industrial processes generate an enormous amount of waste heat that can be converted to electricity by using thermoelectric devices. Magnesium compound Mg2BIV (BIV = Si, Ge or Sn) has a favorable combination of physical and chemical properties and can be a good base for the development of new efficient thermoelectrics. Because they possess similar properties to those of group BIV elemental semiconductors, they have been recognized as good candidates for thermoelectric applications. Mg2Si, Mg2Ge and Mg2Sn with an antifluorite structure are narrow bandgap semiconductors with indirect band gaps of 0.77 eV, 0.74 eV, and 0.35 eV, respectively. Mg2BIV has been recognized as a promising material for thermoelectric energy conversion at temperatures ranging from 500 K to 800 K. Compared to other thermoelectric materials operating in the similar temperature range, such as PbTe and filled skutterudites, the important aspects of Mg2BIV are non-toxic and earth-abundant elements. Based on classical thermoelectric theory, the material factor β ( m* / m e)3/2μκ L -1 can be utilized as the criterion for thermoelectric material selection, where m* is the density-of-states effective mass, me is the mass of an electron, μ is the carrier mobility, and κL is the lattice thermal conductivity. The β for magnesium silicides is 14, which is very high compared to 0.8 for iron silicides, 1.4 for manganese silicides, and 2.6 for silicon-germanium alloys. In this paper, basic phenomena of thermoelectricity and transport parameters for thermoelectric materials were briefly introduced, and thermoelectric properties of Mg2BIV synthesized by using a solid-state reaction were reviewed. In addition, various Mg2BIV compounds were discussed

  20. Ab initio investigation of isomerism, structure and stability of dimer molecules of (LiMgH3)2 and (LiMgF3)2salts and their fragments

    International Nuclear Information System (INIS)

    Charkin, O.P.; Klimenko, N.M.; MakKi, M.L.

    2000-01-01

    Ab initio calculations of potential energy surfaces in neighborhood of key structures of non rigid dimer molecules of lithium salts of (LiMgX 3 ) 2 and binuclear anions Mg 2 X 5 - , dianions MgX 6 2- and molecules Mg 2 X 4 (X=H, F) are done in the framework of QCI-SD(T)/6-31(+)G**//MP2/6-31G* + ZPE(MP2/6-31G*) and MP2/6-31G*//HF/6-31G* + ZPE(HF/6-31G*) approximations. Equilibrium geometric parameters, relative energy and energy of decomposition of isomers, frequencies and IR-intensities of normal vibrations are determined. Data obtained are compared with results of analogous calculations for beryllium related compounds [ru

  1. Superconductivity in MgB{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Muranaka, Takahiro; Akimitsu, Jun [Aoyama Gakuin Univ., Kanagawa (Japan). Dept. of Physics and Mathematics

    2011-07-01

    We review superconductivity in MgB{sub 2} in terms of crystal and electronic structure, electron-phonon coupling, two-gap superconductivity and application. Finally, we introduce the development of new superconducting materials in related compounds. (orig.)

  2. Additive Manufacturing of Magnesium (Mg) Alloys

    Data.gov (United States)

    National Aeronautics and Space Administration — The proposed work is to investigate additive manufacturing techniques for Mg alloys.  It will leverage off research being conducted at University of Florida and...

  3. Chondrogenic differentiation of ATDC5-cells under the influence of Mg and Mg alloy degradation.

    Science.gov (United States)

    Martinez Sanchez, Adela H; Feyerabend, Frank; Laipple, Daniel; Willumeit-Römer, Regine; Weinberg, Annelie; Luthringer, Bérengère J C

    2017-03-01

    Biodegradable magnesium (Mg)-based materials are a potential alternative to permanent implants for application in children. Nevertheless effects of those materials on growth plate cartilage and chondrogenesis have not been previously evaluated. In vitro differentiation of ATDC5 cells was evaluated under the influence of pure Mg (PMg), Mg with 10wt% of gadolinium (Mg-10Gd) and Mg with 2wt% of silver (Mg-2Ag) degradation products (extracts) and direct cell culture on the materials. Gene expression showed an inhibitory effect on ATDC5 mineralization with the three extracts and a chondrogenic potential of Mg-10Gd. Cells cultured in Mg-10Gd and Mg-2Ag extracts showed the same proliferation and morphology than cells cultured in growth conditions. Mg-10Gd induced an increase in production of ECM and a bigger cell size, similar to the effects found with differentiation conditions. An increased metabolic activity was observed in cells cultured under the influence of Mg-10Gd extracts, indicated by an acidic pH during most of the culture period. After 7days of culture on the materials, ATDC5 growth, distribution and ECM synthesis were higher on Mg-10Gd samples, followed by Mg-2Ag and PMg, which was influenced by the homogeneity and composition of the degradation layer. This study confirmed the tolerance of ATDC5 cells to Mg-based materials and a chondrogenic effect of Mg-10Gd. Further studies in vitro and in vivo are necessary to evaluate cell reactions to those materials, as well as the effects on bone growth and the biocompatibility of the alloying system in the body. Copyright © 2016 Elsevier B.V. All rights reserved.

  4. Identifikasi Carrier Bakteri Streptococcus β hemolyticus Group A pada Murid SD Negeri 13 Padang Berdasarkan Perbedaan Umur dan Jenis Kelamin

    Directory of Open Access Journals (Sweden)

    Fadhila Aini

    2016-01-01

    Full Text Available AbstrakStreptococcus β hemolyticus Grup A atau yang disebut juga Streptococcus pyogenes merupakan salah satu bakteri patogen yang banyak menginfeksi manusia.Bakteri ini dapat ditemukan sebagai carrier di saluran pernafasan terutama pada anak-anak, tidak menimbulkan penyakit tetapi berisiko untuk menyebarkan penyakit. Tujuan penelitian ini adalah menentukan jumlah carrier  bakteri Streptococcus β hemolyticus Grup A pada murid berdasarkan perbedaan umur dan jenis kelamin. Jenis penelitian ini adalah deskriptif cross-sectional dengan menggunakan sampel seluruh murid SD Negeri 13 Padang. Hasil penelitian adalah didapatkan 2 orang murid yang menderita carrier, yaitu pada kelompok usia>8-9 tahun dan >11 tahun. Berdasarkan jenis kelamin yang terdiri dari 54 orang laki-laki dan 50 orang perempuan, didapatkan 2 orang carrier yaitu hanya pada anak laki-laki. Hasil penelitian menunjukkan bahwa carrier bakteri Streptococcus β hemolyticus Group  A terdapat pada anak usia tersebut karena masih kurangnya pengetahuan tentang kebersihan. Carrier yang ditemukan hanya pada anak laki-laki kemungkinan disebabkan mereka lebih sering bermain di luar rumah dan terpapar dengan berbagai bakteri patogen dan kurang memperhatikan kebersihan diri.Kata kunci: carrier, streptococcus β hemolyticus grup A, umur, jenis kelamin AbstractGroup A Streptococcus β hemolyticus or also called Streptococcus pyogenes is one of many pathogenic bacteria that infect humans. These bacteria can be found as a carrier in the respiratory tract especially in children, do not cause disease but can be a risk for spreading the disease. This objective of this study was to determine the amount of the carrier of bacteria group A Streptococcus β hemolyticus based on age and gender differences. This research is a descriptive cross - sectional study using a sample of all students of SD Negeri 13 Padang. Based on the age of 104 students found that students who suffer 2 carrier, which is in the age

  5. Hubungan Status Sosial Ekonomi dan Gaya Hidup dengan Kejadian Obesitas pada Siswa SD Negeri 08 Alang Lawas Padang

    Directory of Open Access Journals (Sweden)

    Cici Octari

    2014-05-01

    Full Text Available AbstrakObesitas di Indonesia mulai menjadi masalah gizi masyarakat walaupun gizi kurang masih tinggi. Obesitas disebabkan oleh banyak faktor/multifaktorial yang dapat dibagi menjadi genetik dan lingkungan yang diantaranya adalah status sosial ekonomi dan gaya hidup. Penelitian ini menggunakan desain cross sectional study dengan populasi adalah seluruh siswa kelas I sampai V di SD N 08 Alang Lawas,Padang. Penelitian ini mendapatkan hasil 8,21% siswa mengalami obesitas, 11,79% overweight atau gemuk, 82,60% tingkat pendapatan orang tua siswa berada di atas garis kemiskinan, 71,30% ayah dan 71,80% ibu siswa memiliki tingkat pendidikan menengah, 58,50% siswa memiliki pola makan baik, dan 60% memiliki aktifitas fisik aktif. Tidak didapatkan hubungan yang bermakna antara kejadian obesitas dengan tingkat pendidikan orang tua (ayah: p=0,205 ; ibu: p=1,00, tingkat pendapatan orang tua (p=0,396, dan pola makan anak (p=0,245. Didapatkan hubungan yang bermakna antara aktifitas fisik anak dengan kejadian obesitas (p=0,048.Kata kunci: obesitas, anak, sosial-ekonomi, gaya hidupAbstractIn Indonesia, obesity has became a public nutrition problem although frequence of undernutrition was still high. The obesity caused by many factor/multifactorial that asssigned to genetic factor and environment factor. Two of the environment factors are social-economy and life style. Cross sectional study was chosen as a method to conduct the study. The study population were all the students on 1st grade to 5th grade in SD Negeri 08 Alang Lawas, Padang. The result shows that 8.21% of the students suffered from obesity, 11.79% were overweight, 82.60% of the students have the parents that have income more then the poverty line, 71.30% of the fathers and 71.80% of the mothers were middle graduations, 58.50% have good consumptions pattern, and 60% have active physical activity. There are no association between the obesity among the children with parent’s graduation (father: p=0

  6. Mg/Ca of Continental Ostracode Shells

    Science.gov (United States)

    Ito, E.; Forester, R. M.; Marco-Barba, J.; Mezquita, F.

    2007-12-01

    Marine ionic chemistry is thought to remain constant. This, together with the belief that marine calcifiers partition Mg/Ca in a systematic manner as functions of temperature (and Mg/Ca) of water forms the basis of the Mg/Ca thermometer. In continental settings both of these assumptions are usually not true. Continental waters contain a wide variety of solutes in absolute and relative ion concentrations. Hence, waters with identical Mg/Ca may have very different concentrations of Mg and Ca and very different anions. Here we use two examples to focus on the effects of ion chemistry on Mg/Ca partitioning in continental ostracode shells and we ignore the complexities of solute evolution, which can change Mg/Ca over timescales of minutes to millennia. Palacios-Fest and Dettman (2001) conducted a monthly study of ,Cypridopsis vidua at El Yeso Lake in Sonora, Mexico. They established a relation between temperature and average shell Mg/Ca using regression analyses on averaged data. When their Mg/Ca-temperature relation is applied to monthly ,C. vidua data from Page Pond near Cleveland, Ohio, water temperatures of -8 to -1°C are obtained. The observed Mg/Ca ranges for El Yeso Lake (0.31 to 0.46) and Page Pond (0.33 to 0.46) are similar, as are their specific conductivities (700 to 850μS for El Yeso Lake; 400 to 600μS for Page Pond). However, [Ca] is 140-260 mg/L for El Yeso, but only 70-90 mg/L for Page Pond. Page Pond data, in fact, shows a good temperature shell Mg/Ca relation for .C. vidua, but the relation is different from that at El Yeso. Hence, shell Mg/Ca is a multi-valued, family of curves function of temperature and Mg/Ca of water that depends on the [Mg] and [Ca] values in water and perhaps other factors. Our second example comes from sites near Valencia, Spain and involves shell data for ,Cyprideis torosa, an estuarine ostracode that is tolerant of a wide range of salinity and can live in continental waters as long as the carbonate alkalinity to Ca ratio is

  7. Prussian Blue Mg-Li Hybrid Batteries.

    Science.gov (United States)

    Sun, Xiaoqi; Duffort, Victor; Nazar, Linda F

    2016-08-01

    The major advantage of Mg batteries relies on their promise of employing an Mg metal negative electrode, which offers much higher energy density compared to graphitic carbon. However, the strong coulombic interaction of Mg 2+ ions with anions leads to their sluggish diffusion in the solid state, which along with a high desolvation energy, hinders the development of positive electrode materials. To circumvent this limitation, Mg metal negative electrodes can be used in hybrid systems by coupling an Li + insertion cathode through a dual salt electrolyte. Two "high voltage" Prussian blue analogues (average 2.3 V vs Mg/Mg 2+ ; 3.0 V vs Li/Li + ) are investigated as cathode materials and the influence of structural water is shown. Their electrochemical profiles, presenting two voltage plateaus, are explained based on the two unique Fe bonding environments. Structural water has a beneficial impact on the cell voltage. Capacities of 125 mAh g -1 are obtained at a current density of 10 mA g -1 (≈C/10), while stable performance up to 300 cycles is demonstrated at 200 mA g -1 (≈2C). The hybrid cell design is a step toward building a safe and high density energy storage system.

  8. The Hartree-Fock approximation for s-d shell even-even nuclei with N different of Z

    International Nuclear Information System (INIS)

    Oliveira, P.C. de.

    1981-02-01

    Using the Hartree-Fock approximation method for 22 Ne, 26 Mg and 30 Si nuclei with different kinds of two-body interactions, the electric quadrupole moments and projected energy levels, of angular momentum J=0,2,4,6..., are determined. The Peierls-Yoccoz projection m ethod is used to determine the wave function with well-defined angular momentum. A comparison is made, with the experimental results and the ones obtained by other authors. (Author) [pt

  9. Optical model analysis of 3He elastic scattering from s-d shell nuclei at 25 MeV

    International Nuclear Information System (INIS)

    Vernotte, J.; Berrier-Ronsin, G.; Kalifa, J.; Tamisier, R.; Nantes Univ., 44

    1982-01-01

    Angular distributions of elastically scattered 3 He particles from 16 O, 18 O, 19 F, 23 Na, 24 Mg, 25 Mg, 26 Mg, 27 Al, 28 Si, 29 Si, 30 Si, 31 P, 35 Cl, 37 Cl, 39 K and 40 Ca nuclei were measured at 25 MeV bombarding energy. The absolute differential cross-section data were analysed in the framework of the standard optical model with either a volume or a surface imaginary part. Three families of parameters were considered. For all these families, the real potential volume integral Jsub(R) per interacting nucleon pair decreases as the mass number A increases. The family with Jsub(R) = 380 MeV x fm 3 for 40 Ca and Jsub(R) = 590 MeV x fm 3 for 16 O has been identified with the unique family obtained at higher energies, and is therefore considered as the 'physical' family. The matter and charge radii deduced from the analysis are presented. The charge radii are compared with the ones obtained from muonic X-ray transitions and electron scattering measurements. (orig.)

  10. PERBEDAAN PENGARUH MODEL STUDENT TEAMS ACHIEVEMENT DIVISION (STAD DAN NUMBERED HEADS TOGETHER (NHT TERHADAP HASIL BELAJAR MATEMATIKA SISWA KELAS V SD

    Directory of Open Access Journals (Sweden)

    Nur Halimah

    2017-09-01

    Full Text Available This study aimed to determine the significance of the influence differences between the use of Student Teams Achievement Division (STAD model and Numbered Heads Together (NHT model on the 5th grade mathematics learning outcomes in SD Negeri Sumberejo 01 and SD Negeri Sumberejo 02. The type of research used was a quasi experiment with an unpredictable Pretest Posttest design. The subjects of the study were students of grade 5 in SD N Sumberejo 01 as experimental class 1 and grade V SD N of Sumberejo 02 as experiment class 2. The variables in this study consisted of independent variables, namely Student Teams Achievement Division (STAD model, Numbered Heads Together (NHT model and dependent variable was learning outcome. Data collection was done by test technique. The data analysis technique used T test with Independent T test Sample applied to posttest value. Result of t test of posttest value of experiment group 1 and experiment  group 2 showed that the value was in significance 0,019 ˂ 0,05, because the significance ˂ 0,05 hence Ho rejected and Ha accepted with conclusion there was significant difference between the model of STAD and NHT to the result of learning of mathematics at student grade 5 in SD Negeri Sumberejo 01 and SD Sumberejo 02. The significant difference in mathematics learning outcomes was supported by the difference average of two research samples, where the average of learning outcomes on the application of STAD learning model was 77.89, While the average of learning outcomes on the application of NHT learning model was 85.53. This meant that the learning treatment with NHT model has different significant impact compared to the STAD learning model on mathematics learning outcomes of grade 5 SD Sumberejo 01 and SD N Sumberejo 02 Semester II of 2016/2017academic year. Kata Kunci : Student Teams Achievement Division (STAD, Numbered Heads Together (NHT, Learning Outcomes, Mathematics, 5th grade primary school students

  11. MENINGKATKAN HASIL BELAJAR SISWA PADA PEMBELAJARAN PENJASKES DENGAN MENGGUNAKAN MODEL PEMBELAJARAN TEMATIK (PENJASKES, MATEMATIKA, DAN BAHASA INDONESIA) DI KELAS I SD NEGERI UTAMA 2 TARAKAN

    OpenAIRE

    Sri Suparyati

    2011-01-01

    Suparyati, Sri. 2011. Meningkatkan Hasil Belajar Siswa pada Pembelajaran Penjaskes dengan Menggunakan Model Pembelajaran Tematik (Penjaskes, Matematika, dan Bahasa Indonesia) di Kelas I SD Negeri Utama 2 Tarakan. Dalam pelaksanaan penelitian ini menggunakan rancangan penelitian tindakan kelas (classroom action research) dengan dua siklus, siklus I dan siklus II dilaksanakan dalam satu kali tatap muka. Subyek penelitian adalah siswa kelas I-2 SD Negeri Utama 2 Tarakan semester I tahun pembelaj...

  12. Formation and Corrosion Resistance of Mg-Al Hydrotalcite Film on Mg-Gd-Zn Alloy

    Science.gov (United States)

    Ba, Z. X.; Dong, Q. S.; Kong, S. X.; Zhang, X. B.; Xue, Y. J.; Chen, Y. J.

    2017-06-01

    An environment-friendly technique for depositing a Mg-Al hydrotalcite (HT) (Mg6Al2(OH)16-CO3ṡ4H2O) conversion film was developed to protect the Mg-Gd-Zn alloy from corrosion. The morphology and chemical compositions of the film were analyzed by scanning electronic microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and Raman spectroscopy (RS), respectively. The electrochemical test and hydrogen evolution test were employed to evaluate the biocorrosion behavior of Mg-Gd-Zn alloy coated with the Mg-Al HT film in the simulated body fluid (SBF). It was found that the formation of Mg-Al HT film was a transition from amorphous precursor to a crystalline HT structure. The HT film can effectively improve the corrosion resistance of magnesium alloy. It indicates that the process provides a promising approach to modify Mg-Gd-Zn alloy.

  13. Microstructural evolution in Mg-rich Mg-Zn-Y alloys

    International Nuclear Information System (INIS)

    Biswas, T.; Ranganathan, S.; Nair, S.; Bajargan, G.

    2005-01-01

    Mg-rich Mg-Zn-Y alloys with nominal compositions Mg 97 Zn 1 Y 2 , Mg 97 Zn 2 Y 1 , Mg 92 Zn 6.5 Y 1.5 and Mg 97-x Zn 1 Y 2 Zr x have been chosen for the present study. These alloys are prepared by using sand casting mold. The sand cast alloys are remelted and subjected to copper mold casting and melt spinning techniques. The effect of cooling rate on microstructures was studied. It is observed that the size of the precipitates decreases with an increase of cooling rate. The formation of nano precipitates results in higher strength of the alloy as compared to the conventional alloys. The microstructures of melt spun ribbons are compared with RS/PM (rapidly solidified power metallurgy) Mg 97 Zn 1 Y 2 alloy, obtained from a different source. (author)

  14. A planet orbiting an sdB star and an M dwarf in 2M 1938+4603

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    Blokesz Adam

    2015-01-01

    Full Text Available We present a preliminary analysis of the 2M 1938+4603 star. It is an eclipsing binary system consisting of a primary sdB component and a secondary M dwarf. The photometric data are dominated by mutual eclipses and a very strong reflection effect. The primary has a fairly rich pulsation spectrum which can be used to study its interior. On the other hand, the pulsations affect the binary trend and vice versa what makes the analysis very difficult. Therefore, we attempted at proper modeling of the light variation due to eclipses and reflection and their removal from the data so it does not affect the Fourier analysis of stellar pulsations. We focus on mid-times of over 16 000 primary and secondary minima, which were used to verify stability of the orbital period. The O-C diagram indicates possible parabolic and sinusoidal variations, commonly explained by period changes caused by evolution and a presence of a third body, respectively.

  15. PENGARUH MEDIA PETA INTERAKTIF TERHADAP PEMAHAMAN DAN HASIL BELAJAR SISWA PADA MATA PELAJARAN IPS KELAS IV SD

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    Maya Kartika Sari

    2016-11-01

    Full Text Available Teaching media has been applied and studied since long ago, but the significance of interactive map media in teaching social science at elementary school has not yet developed. This research is attempted to depict: the students’ mastery on the places and sites, activeness and achievement. The research is conducted under two-cycle class action research on 30 students of four grade, SD Jetis, Bantul, Jogjakarta, at social science subject. The analysis brings about results that: (1 the students’ mastery increases, from 4 students in preliminary reserach becomes 11 in the first cycle and 26 in the second cycle of the research, who master the teaching materials. (2 Students’ activeness increases from 5 students in the prilimary research, to 10 in the first cycle and 28 in the second cycle, who are active in classes. (3 The students’ achievement also increase from 6 students to 15 in the first cycle and 29 in the second cycle, who achieve better mark. The results suggest that interactive map is effective in teaching social science for the students of four grade.   Keywords : teaching social science, interactive map media.

  16. Intruder states in sd-shell nuclei: from 1p-1t to np-nt in Si isotopes

    International Nuclear Information System (INIS)

    Goasduff, A.

    2012-01-01

    New large-scale shell-model calculations with full 1ℎω valence space for the sd-nuclei has been used for the first time to predict lifetimes of positive and negative parity states in neutron rich Si isotopes. The predicted lifetimes (1 - 100 ps) fall in the range of the differential Doppler shift method. Using the demonstrator of the European next generation γ-ray array, AGATA, in coincidence with the large acceptance PRISMA magnetic spectrometer from LNL (Legnaro) and the differential plunger of the University of Cologne, lifetimes of excited states in 32;33 Si and 35;36 S nuclei were measured. In a second step, the nℎω structure in the stable 28 Si nucleus was also studied. 28 Si is an important nucleus in order to understand the competition between mean-field and cluster structures. It displays a wealth of structures in terms of deformation and clustering. Light heavy-ion resonant radiative capture 12 C+ 16 O has been performed at energies below the Coulomb barrier. The measure γ-spectra indicate for the first time at these energies that the strongest part of the resonance decay proceeds though intermediate states around 10 MeV. Comparisons with previous radiative capture studies above the Coulomb barrier have been performed and the results have been interpreted in terms of a favoured feeding of T=1 states in the 28 Si self-conjugate nucleus. (author)

  17. Extracellular Pectinase from a Novel Bacterium Chryseobacterium indologenes Strain SD and Its Application in Fruit Juice Clarification

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    Karabi Roy

    2018-01-01

    Full Text Available Pectinase is one of the important enzymes of industrial sectors. Presently, most of the pectinases are of plant origin but there are only a few reports on bacterial pectinases. The aim of the present study was to isolate a novel and potential pectinase producing bacterium as well as optimization of its various parameters for maximum enzyme production. A total of forty bacterial isolates were isolated from vegetable dump waste soil using standard plate count methods. Primary screening was done by hydrolysis of pectin. Pectinase activity was determined by measuring the increase in reducing sugar formed by the enzymatic hydrolysis of pectin. Among the bacterial isolates, the isolate K6 exhibited higher pectinase activity in broth medium and was selected for further studies. The selected bacterial isolate K6 was identified as Chryseobacterium indologenes strain SD. The isolate was found to produce maximum pectinase at 37°C with pH 7.5 upon incubation for 72 hours, while cultured in production medium containing citrus pectin and yeast extract as C and N sources, respectively. During enzyme-substrate reaction phase, the enzyme exhibited its best activity at pH of 8.0 and temperature of 40°C using citrus pectin as substrate. The pectinase of the isolate showed potentiality on different types of fruit juice clarification.

  18. The Structure of the Heavy Calcium Isotopes and the Effective Interaction in the sd-fp Shell

    CERN Multimedia

    Dorvaux, O; Nowacki, F; Courtin, S; Marechal, F; Siiskonen, T M; Perrot, F; Pietri, S B

    2002-01-01

    Nuclei with 40 $<$ A $<$ 56, near the stability line, are very well described in the frame of the shell model. However, when the number of neutrons increases, the situation becomes more complex which explains why the interaction can be found very dissimilar within different calculations. Heavy Ca isotopes, because of the simplicity of their wave-functions, correspond to the optimal choice to fix unambiguously the interaction in this mass region.\\\\ It is proposed to measure the $\\beta$-decay of $^{51, 52, 53}$K with the help of an utmost performing neutron (TONNERRE array) and $\\gamma$- (Miniball clusters) detection, allowing efficient coincidence measurements. This will allow the lowest lying Gamow-Teller states to be located in $^{51, 52, 53}$Ca, and the still unknown properties of natural parity states to be investigated. The awaited results should allow to settle the n-n interaction in the fp shell and the Gnp matrix accross the sd and fp shells, one step farther from stability, by comparison with fu...

  19. PENGEMBANGAN PERANGKAT PEMBELAJARAN PADA MATERI GEOMETRI DAN PENGUKURAN DENGAN PENDEKATAN PENDIDIKAN MATEMATIKA REALISTIK INDONESIA DI SD NEGERI 179 PALEMBANG

    Directory of Open Access Journals (Sweden)

    N. Fahriza Fuadiah

    2013-09-01

    Full Text Available The aims of the research is to produce the set of oriented realistic mathematical education (RME approach material that is valid and practical for teaching in elementary school student of the fifth grade  and have a good potencial effect. PMRI is one of learning approach which dribbles students in understanding mathematics concept by selfcontruction through prior knowledge which is related to daily activity, finding the concept by themselves so that the learning becomes meaningful. The research is a development research and method used in two stages, that are preliminary study (analysis and model development stage and formative study (evaluation and revision stage. The samples were students of fifth grade at SD Negeri 179 Palembang. In technique collecting the data, the writer used interview with the experts, observation by using prototype. The data was analyzed by using descriptive method. The result of data analyses concludes that the development of geometry and measurement prototype for the fifth grade students is valid based on content, construction, and language. It can be conclude from the documentary data that the use of student’s book has been a practical use. The try out tested on students has given potential effect which is the students like to study using realistic mathematical education approach with student activity level of 6.47 in a very high criteria and the average of final mark of  87,17 in a very good criteria. Key words: development research, RME, the set of teaching and learning

  20. BEDA PENGARUH ARKUS KAKI TERHADAP KESEIMBANGAN STATIS ANAK USIA 9-12 TAHUN DI SD NEGERI MOJOLEGI, TERAS, BOYOLALI

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    M. Syafi’i

    2016-12-01

    Full Text Available Tujuan penelitian ini adalah untuk mengetahui perbedaan  normal foot dan flat foot terhadap keseimbangan statis pada anak usia 9-12 tahun. Sejumlah 60 subyek sehat, terbagi menjadi dua kelompok. Masing- masing kelompok 30 orang. Kelompok I adalah Kelompok dengan kondisi arkus normal dan kelompok II adalah kondisi arkus flat foot. Dilakukan di SD Negeri Mojolegi, Teras, Boyolali. Dengan menggunakan alat ukur Wet Test dan One Legged Stance Test. Penelitian ini merupakan non eksperimental cross sectional design. Masing-masing kelompok diuji normalitas data dengan Kolmogorov-Smirnov Test pada Kelompok I menujukkan nilai p>0,05 maka data berdistribusi normal dan Kelompok II menunjukkan nilai p>0,05 maka data berdistribusi normal. Pada kedua kelompok diuji hipotesis dengan Independent T Test dengan hasil p<0,05 maka terdapat perbedaan yang signifikan antara kondisi arkus normal dan kondisi arkus flatfoot dalam mempertahankan keseimbangan statis. Berdasarkan  analisis  statistik penelitian yang telah dilakukan dapat disimpulkan bahwa terdapat perbedaan yang signifikan antara kondisi arkus normal dan kondisi arkus flatfoot dalam mempertahankan posisi keseimbangan statis.

  1. Effect of Long-Term Consumption of Lactobacillus paracasei SD1 on Reducing Mutans streptococci and Caries Risk: A Randomized Placebo-Controlled Trial

    Directory of Open Access Journals (Sweden)

    Rawee Teanpaisan

    2015-04-01

    Full Text Available Background: A previous study revealed Lactobacillus paracasei SD1, a probiotic strain, could reduce mutans streptococci (MS. The aim of this study was to evaluate the long-term effects of L. paracasei SD1 on the colonization of MS, and whether caries lesions developed. Methods: After informed consent, 122 children were recruited and randomly assigned to the probiotic or control groups. The probiotic group received milk-powder containing L. paracasei SD1 and the control group received standard milk-powder once daily for six months. Salivary MS and lactobacilli were enumerated using differential culture at baseline and at three-month intervals for 12 months. The persistence of L. paracasei SD1 was investigated using AP-PCR for DNA-fingerprinting. Oral health was examined at baseline and at the end of the study according to WHO criteria. Results: The long-term consumption could prolong colonization of L. paracasei SD1. Significantly reduced MS counts and increased lactobacilli levels were found among children in the probiotic group. There were less caries lesions in the probiotic group at the end of the study. A significant reduction of the development of new caries lesions (4.5 times was observed in the high caries risk group but not in the low caries risk group. Conclusions: Results demonstrate that the long-term daily ingestion of the human-derived probiotic L. paracasei SD1 significantly reduces the number of MS and caries risk in the high caries group.

  2. Ectopic expression of Capsicum-specific cell wall protein Capsicum annuum senescence-delaying 1 (CaSD1) delays senescence and induces trichome formation in Nicotiana benthamiana.

    Science.gov (United States)

    Seo, Eunyoung; Yeom, Seon-In; Jo, Sunghwan; Jeong, Heejin; Kang, Byoung-Cheorl; Choi, Doil

    2012-04-01

    Secreted proteins are known to have multiple roles in plant development, metabolism, and stress response. In a previous study to understand the roles of secreted proteins, Capsicum annuum secreted proteins (CaS) were isolated by yeast secretion trap. Among the secreted proteins, we further characterized Capsicum annuum senescence-delaying 1 (CaSD1), a gene encoding a novel secreted protein that is present only in the genus Capsicum. The deduced CaSD1 contains multiple repeats of the amino acid sequence KPPIHNHKPTDYDRS. Interestingly, the number of repeats varied among cultivars and species in the Capsicum genus. CaSD1 is constitutively expressed in roots, and Agrobacterium-mediated transient overexpression of CaSD1 in Nicotiana benthamiana leaves resulted in delayed senescence with a dramatically increased number of trichomes and enlarged epidermal cells. Furthermore, senescence- and cell division-related genes were differentially regulated by CaSD1-overexpressing plants. These observations imply that the pepper-specific cell wall protein CaSD1 plays roles in plant growth and development by regulating cell division and differentiation.

  3. Characterization of Asia 1 sdAb from camels bactrianus (C. bactrianus and conjugation with quantum dots for imaging FMDV in BHK-21 cells.

    Directory of Open Access Journals (Sweden)

    Shuanghui Yin

    Full Text Available Foot-and-mouth disease (FMD, caused by FMD virus (FMDV, is a highly contagious viral disease affecting cloven-hoofed animals. Camelids have a unique immunoglobulin profile, with the smallest functional heavy-chain antibodies (sdAb or VHH naturally devoid of light chains with antigen-binding capacity. We screened and characterized five sdAbs against FMDV by immunized library from C. bactrianus with Asia 1 virus-like particles (VLPs. Three of five recombinant sdAbs were stably expressed in E.coli, remained highly soluble, and were serotype-specific for VP1 protein of FMDV Asia 1 by ELISA. These failed to completely neutralize the Asia 1 virus. According to the KD value of binding affinity to three sdAbs, which ranged from 0.44 to 0.71 nm by SPR, sdAb-C6 was selected and conjugated with Zn/CdSe quantum dots (QDs to form a QDs-C6 probe, which was used to trace and image the subcellular location of FMDV in BHK-21 cells. The results show that FMD virions were observed from 3 h.p.i., and most of virions were distributed on one side of the nucleus in the cytoplasm. We demonstrate the utility of sdAbs as functionalized QDs are powerful tools for FMDV research.

  4. Melting relations in the MgO-MgSiO3 system up to 70 GPa

    Science.gov (United States)

    Ohnishi, Satoka; Kuwayama, Yasuhiro; Inoue, Toru

    2017-06-01

    Melting experiments in a binary system MgO-MgSiO3 were performed up to 70 GPa using a CO2 laser heated diamond anvil cell. The quenched samples were polished and analyzed by a dualbeam focused ion beam (FIB) and a field emission scanning electron microscope (FE-SEM), respectively. The liquidus phase and the eutectic composition were determined on the basis of textual and chemical analyses of sample cross sections. Our experimental results show that the eutectic composition is the Si/Mg molar ratio of 0.76 at 35 GPa and it decreases with increasing pressure. Above 45 GPa, it becomes relatively constant at about 0.64-0.65 Si/Mg molar ratio. Using our experimental data collected at a wide pressure range up to 70 GPa together with previous experimental data, we have constructed a thermodynamic model of the eutectic composition of the MgO-MgSiO3 system. The eutectic composition extrapolated to the pressure and temperature conditions at the base of the mantle is about 0.64 Si/Mg molar ratio. The modeled eutectic composition is quite consistent with a previous prediction from ab initio calculations (de Koker et al. in Earth Planet Sci Lett 361:58-63, 2013), suggesting that the simple assumption of a non-ideal regular solution model can well describe the melting relation of the MgO-MgSiO3 system at high pressure. Our results show that the liquidus phase changes from MgO-periclase to MgSiO3-bridgmanite at 35 GPa for the simplified pyrolite composition ( 0.7 Si/Mg molar ratio), while MgSiO3-bridgmanite is the liquidus phase at the entire lower mantle conditions for the chondritic composition ( 0.84 Si/Mg molar ratio).

  5. Chondrogenic differentiation of ATDC5-cells under the influence of Mg and Mg alloy degradation

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Sanchez, Adela H., E-mail: adela.martinez@hzg.de [Helmholtz-Zentrum Geesthacht, Institute of Material Research, Department for Structural Research on Macromolecules, Geesthacht (Germany); Feyerabend, Frank; Laipple, Daniel; Willumeit-Römer, Regine [Helmholtz-Zentrum Geesthacht, Institute of Material Research, Department for Structural Research on Macromolecules, Geesthacht (Germany); Weinberg, Annelie [Department of Orthopedics and Orthopedic Surgery, Medical University of Graz (Austria); Luthringer, Bérengère J.C. [Helmholtz-Zentrum Geesthacht, Institute of Material Research, Department for Structural Research on Macromolecules, Geesthacht (Germany)

    2017-03-01

    Biodegradable magnesium (Mg)-based materials are a potential alternative to permanent implants for application in children. Nevertheless effects of those materials on growth plate cartilage and chondrogenesis have not been previously evaluated. In vitro differentiation of ATDC5 cells was evaluated under the influence of pure Mg (PMg), Mg with 10 wt% of gadolinium (Mg-10Gd) and Mg with 2 wt% of silver (Mg-2Ag) degradation products (extracts) and direct cell culture on the materials. Gene expression showed an inhibitory effect on ATDC5 mineralization with the three extracts and a chondrogenic potential of Mg-10Gd. Cells cultured in Mg-10Gd and Mg-2Ag extracts showed the same proliferation and morphology than cells cultured in growth conditions. Mg-10Gd induced an increase in production of ECM and a bigger cell size, similar to the effects found with differentiation conditions. An increased metabolic activity was observed in cells cultured under the influence of Mg-10Gd extracts, indicated by an acidic pH during most of the culture period. After 7 days of culture on the materials, ATDC5 growth, distribution and ECM synthesis were higher on Mg-10Gd samples, followed by Mg-2Ag and PMg, which was influenced by the homogeneity and composition of the degradation layer. This study confirmed the tolerance of ATDC5 cells to Mg-based materials and a chondrogenic effect of Mg-10Gd. Further studies in vitro and in vivo are necessary to evaluate cell reactions to those materials, as well as the effects on bone growth and the biocompatibility of the alloying system in the body. - Highlights: • Degradation of PMg, and Mg-2Ag do not influence ATDC5 cells growth and chondrogenic redifferentiation. • Mg-10Gd enhances fast chondrogenic redifferentiation and expression of hyperthrophic markers on ATDC5 cells. • Further evaluation of the effects of PMg, Mg-10Gd and Mg-2Ag in vivo are necessary to confirm its potential for application in growing bones.

  6. Chondrogenic differentiation of ATDC5-cells under the influence of Mg and Mg alloy degradation

    International Nuclear Information System (INIS)

    Martinez Sanchez, Adela H.; Feyerabend, Frank; Laipple, Daniel; Willumeit-Römer, Regine; Weinberg, Annelie; Luthringer, Bérengère J.C.

    2017-01-01

    Biodegradable magnesium (Mg)-based materials are a potential alternative to permanent implants for application in children. Nevertheless effects of those materials on growth plate cartilage and chondrogenesis have not been previously evaluated. In vitro differentiation of ATDC5 cells was evaluated under the influence of pure Mg (PMg), Mg with 10 wt% of gadolinium (Mg-10Gd) and Mg with 2 wt% of silver (Mg-2Ag) degradation products (extracts) and direct cell culture on the materials. Gene expression showed an inhibitory effect on ATDC5 mineralization with the three extracts and a chondrogenic potential of Mg-10Gd. Cells cultured in Mg-10Gd and Mg-2Ag extracts showed the same proliferation and morphology than cells cultured in growth conditions. Mg-10Gd induced an increase in production of ECM and a bigger cell size, similar to the effects found with differentiation conditions. An increased metabolic activity was observed in cells cultured under the influence of Mg-10Gd extracts, indicated by an acidic pH during most of the culture period. After 7 days of culture on the materials, ATDC5 growth, distribution and ECM synthesis were higher on Mg-10Gd samples, followed by Mg-2Ag and PMg, which was influenced by the homogeneity and composition of the degradation layer. This study confirmed the tolerance of ATDC5 cells to Mg-based materials and a chondrogenic effect of Mg-10Gd. Further studies in vitro and in vivo are necessary to evaluate cell reactions to those materials, as well as the effects on bone growth and the biocompatibility of the alloying system in the body. - Highlights: • Degradation of PMg, and Mg-2Ag do not influence ATDC5 cells growth and chondrogenic redifferentiation. • Mg-10Gd enhances fast chondrogenic redifferentiation and expression of hyperthrophic markers on ATDC5 cells. • Further evaluation of the effects of PMg, Mg-10Gd and Mg-2Ag in vivo are necessary to confirm its potential for application in growing bones.

  7. Tracing alteration of mantle peridotite in the Samail ophiolite using Mg isotopes

    Science.gov (United States)

    de Obeso, J. C.; Kelemen, P. B.; Higgins, J. A.

    2017-12-01

    Magnesium is one of the main constituents of mantle peridotite ( 22.8 wt%), which has a homogeneous Mg isotopic composition (d26Mg = -0.25 ± 0.04 ‰ (2 sd) DSM3, Teng et al 2010 GCA). Mg isotopes are used as tracers of continental and oceanic weathering as they exhibit variable degrees of fractionation during alteration depending on the lithology. Here we report some of the first Mg isotopic compositions of the mantle section of the Samail ophiolite in Oman and its alteration products. The mantle section of the ophiolite is composed mainly of depleted harzburgites and dunites with mantle-like d26Mg (-0.25, -0.21 ‰). Mantle peridotite is far from equilibrium in near surface conditions leading to rapid, extensive serpentinization, carbonation and oxidation, as well as other geochemical changes. Our analyzed samples encompass most of the alteration of peridotite products observed in Oman including listvenites (completely carbonated peridotite) near the basal thrust of the ophiolite, massive magnesite veins within peridotite outcrops, and heavily altered harzburgites. Magnesite listvenites have d26Mg slightly below mantle values (-0.33, -0.33‰) while dolomite listvenites are significantly lighter (-1.46, -0.89‰). This suggests that heavy Mg isotopes were removed from the listvenites during ophiolite emplacement. Heavily altered peridotite from Wadi Fins exhibit alteration halos with drastic changes in composition. The most oxidized areas are enriched in Fe and depleted in Mg compared to the cores of the samples. These variations in Mg concentrations are complemented by a shift to heavy Mg isotopic compositions (0.74, 0.86‰), among the heaviest d26Mg values that have been reported in altered peridotite. Potential sinks for light isotopes removed from such alteration zones are massive magnesite veins with very light compositions (-3.39, -3.14‰). The fractionation of Mg isotopes observed in the mantle section of the ophiolite spans more than 50% of the known

  8. Effects of limestone, N, K and Mg fertilizers on Mg absorption by oats and barley

    Energy Technology Data Exchange (ETDEWEB)

    Alston, A M

    1966-01-01

    Oats grown in a pot experiment on two sandy loams were sampled at four stages of growth. Neither KCl nor MgSO/sub 4/. 7H/sub 2/O had any effect on yield but % Mg and total Mg uptake were consistently decreased by applying K and increased by applying Mg. Ca(NO/sub 3/)/sub 2/ increased % Mg more than did (NH/sub 4/)/sub 2/SO/sub 4/, but yield and total Mg uptake were higher where (NH/sub 4/)/sub 2/SO/sub 4/ was applied. The effects of fertilizers were similar on both soils. The effects of applying (NH/sub 4/)/sub 2/SO/sub 4/ and NaNO/sub 2/ to the soil on % Mg in barley were compared in a field experiment on an acid loam to which several rates of limestone had been applied. Treatments had no effect on the % Mg in grain or straw at maturity. At four earlier stages of growth (NH/sub 4/)/sub 2/SO)/sub 4/ increased % Mg in the plants more than did NaNO/sub 2/. Limestone slightly increased % Mg. Nitrification of NH/sub 4/ in the soil was rapid.

  9. Mg Incorporation Efficiency in Pulsed MOCVD of N-Polar GaN:Mg

    Science.gov (United States)

    Marini, Jonathan; Mahaboob, Isra; Hogan, Kasey; Novak, Steve; Bell, L. D.; Shahedipour-Sandvik, F.

    2017-10-01

    We report on the effect of growth polarity and pulsed or δ -doped growth mode on impurity incorporation in metalorganic chemical vapor deposition-grown GaN. In Ga-polar orientation, up to 12× enhancement in Mg concentration for given Mg flow rate is observed, resulting in enhanced p-type conductivity for these samples. In contrast, this enhancement effect is greatly diminished for N-polar samples, falling off with increasing Mg flow and showing maximum enhancement of 2.7× at 30 nmol/min Mg flow. At higher Mg flow rates, Mg incorporation at normal levels did not correspond to p-type conductivity, which may be due to Mg incorporation at nonacceptor sites. Concentrations of C, O, and Si were also investigated, revealing dependence on Mg flow in N-polar pulsed samples. Carbon incorporation was found to decrease with increasing Mg flow, and oxygen incorporation was found to remain high across varied Mg flow. These effects combine to result in N-polar samples that are not p-type when using the pulsed growth mode.

  10. Structural characteristics and corrosion behavior of biodegradable Mg-Zn, Mg-Zn-Gd alloys.

    Science.gov (United States)

    Kubásek, J; Vojtěch, D

    2013-07-01

    In this research, binary Mg-Zn (up to 3 wt% Zn) and ternary Mg-Zn-Gd (up to 3 wt% Gd, 3 wt% Zn) alloys were prepared by induction melting in an argon atmosphere. The structures of these alloys were characterized using light and scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction and X-ray fluorescence. In addition, Brinell hardness measurements were taken to supplement these studies. Corrosion behavior was evaluated by immersion tests and potentiodynamic measurements in a physiological solution (9 g/l NaCl). Depending on the composition, structures of the as-cast alloys contained α-Mg dendrites, MgZn, Mg5Gd and Mg3Gd2Zn3 phases. Compared to pure Mg, zinc improved the corrosion resistance of binary Mg-Zn. Gadolinium also improved the corrosion resistance in the case of Mg-1Zn-3Gd alloy. The highest corrosion rate was observed for Mg-3Zn-3Gd alloy. Our results improve the understanding of the relationships between the structure and corrosion behavior of our studied alloy systems.

  11. Study of deep inelastic reactions on sd-shell nuclei with 100 MeV α-particles

    International Nuclear Information System (INIS)

    Seniwongse, G.

    1985-04-01

    Energy spectra and angular distributions of light particles (p, d, t, 3 He, α) were measured. As projectiles α-particles with the incident energy of 100 MeV were used. The measurement data result from an inclusive measurement of the reactions on 24 Mg, 25 Mg, 26 Mg, 27 Al, 28 Si. The double differential cross sections and the angular distributions were analyzed in the framework of the exciton-coalescence model. Thereby model parameters as the initial exciton number n 0 one-particle state density, and coalescence radii were determined. From the model analysis it can be concluded that n 0 =5 describes the data optimally contrarily to earlier results. The proton spectra can be explained by different one-particle state densities with pairing effects. The probability for the formation of complex particles seems to be independent from the structure of the target nuclei studied here. The calculated cross sections agree well with the measured values. This is valid both for the angle-integrated spectra and for the angular distributions. The agreement was especially well for the angle-integrated cross sections of the (α, p) reaction over the whole spectrum. For the complex particles the agreement in the energy of the produced particle was well up to about 60 MeV, i.e. before the superposition from the breakup respectively direct reactions begins. These reactions are indeed not regarded in the model. The measurement data and the calculated angular distributions agree for all types of particles at measurement angles below about 60 0 well. At larger angles the calculated values are too large. The reasons for this are not yet clear. (orig.) [de

  12. Thermoelectric power of PrMg3

    Science.gov (United States)

    Isikawa, Yosikazu; Somiya, Kazuya; Koyanagi, Huruto; Mizushima, Toshio; Kuwai, Tomohiko; Tayama, Takashi

    2010-01-01

    PrMg3 is supposed to be one of the strongly correlated electron systems originated from the hybridization between the Pr 4f and conduction electrons, because the gigantic electronic specific heat coefficient C/T was observed at low temperatures. However, a typical behaviour of - ln T dependence was not observed in the temperature dependence of the electrical resistivity. The thermoelectric power S is a powerful tool to investigate the density of states at the Fermi energy. We measured carefully the thermoelectric power of PrMg3 in the temperature range between 2 and 300 K. S is extremely small, ranged within ±1 μV/K over the whole temperature. The value of S/T at low temperature limit was also significantly smaller than expected from the specific heat results. We therefore conclude that the density of state at the Fermi level is not enhanced in PrMg3.

  13. Thermoelectric power of PrMg3

    International Nuclear Information System (INIS)

    Isikawa, Yosikazu; Somiya, Kazuya; Koyanagi, Huruto; Mizushima, Toshio; Kuwai, Tomohiko; Tayama, Takashi

    2010-01-01

    PrMg 3 is supposed to be one of the strongly correlated electron systems originated from the hybridization between the Pr 4f and conduction electrons, because the gigantic electronic specific heat coefficient C/T was observed at low temperatures. However, a typical behaviour of - ln T dependence was not observed in the temperature dependence of the electrical resistivity. The thermoelectric power S is a powerful tool to investigate the density of states at the Fermi energy. We measured carefully the thermoelectric power of PrMg 3 in the temperature range between 2 and 300 K. S is extremely small, ranged within ±1 μV/K over the whole temperature. The value of S/T at low temperature limit was also significantly smaller than expected from the specific heat results. We therefore conclude that the density of state at the Fermi level is not enhanced in PrMg 3 .

  14. Penggunaan Model Pembelajaran SAVI Untuk Meningkatkan Prestasi Belajar IPS Pada Siswa Kelas V SD Al Husna Kota Madiun

    Directory of Open Access Journals (Sweden)

    Eka Nofri Ari Yanto

    2017-12-01

    Full Text Available Berdasarkan hasil observasi yang dilakukan peneliti di SD Al Husna (IFDS, diketahui bahwa proses pembelajaran di kelas V masih bersifat konvensional sehingga kurang mengembangkan pola pikir dan kreatifitas siswa. Terdapat beberapa guru khususnya pada mata pelajaran IPS kelas V hanya berceramah dan siswa hanya mendengarkan, mencatat dan menghafalkan materi. Penelitian ini bertujuan untuk meningkatkan prestasi belajar siswa khususnya pada mata pelajaran IPS kelas VA dengan menggunakan model pembelajaran SAVI. Penelitian ini menggunakan metode Penelitian Tindakan Kelas (PTK, prosedur penelitian yang digunakan berupa siklus yang terdiri dari empat tahap yaitu tahap perencanaan, pelaksanaan, observasi dan refleksi.Teknik pengumpulan data yang digunakan adalah tes kognitif dan alat pengumpulan data yang digunakan adalah instrumen soal dan lembar observasi. Hasil analisis data yang diperoleh menunjukkan bahwa terjadi peningkatan pada hasil belajar yang berdampak pada prestasi belajar siswa.Hal ini dapat dilihat dari hasil presentase rata-rata pada siklus I yaitu 75% yang artinya ada 15 dari 20 siswa yang tuntas. Terjadi peningkatan pada siklus yang ke II yaitu 80% yang artinya ada 16 dari 20 siswa yang tuntas dalam pembelajaran. Pada siklus terakhir juga mengalami peningkatan yang signifikan dari siklus sebelumnya yaitu 90% yang artinya ada 18 dari 20 siswa yang tuntas pada siklus terkhir ini. Berdasarkan hasil penelitian, dapat disimpulkan bahwa implementasi model pembelajaran SAVI dapat meningkatkan prestasi belajar siswa pada mata pelajaran IPS kelas V SD Al Husna (IFDS. The result of observation in Al Husna Elementary School (IFDS is learning process on 5th grade which is still conventional so student’s mindset’s development and creativity is less. There are some teachers especially 5th grade’s teachers which only tell the learning material to the students and the students only listen, make a note and memorize the material. This research aims

  15. Long Term Sorption Diffusion Experiment (LTDE-SD). Performance of main in situ experiment and results from water phase measurements

    International Nuclear Information System (INIS)

    Widestrand, Henrik; Byegaard, Johan; Nilsson, Kersti; Hoeglund, Susanne; Gustafsson, Erik; Kronberg, Magnus

    2010-12-01

    The LTDE-SD experiment, (Long Term Sorption Diffusion Experiment) aimed at increasing the scientific knowledge of sorption and diffusion under in situ conditions and to provide data for performance and safety assessment calculations. Performance and results of the in situ experiment phase are presented in the report. In total, 21 radionuclide trace elements and one stable trace element were injected, circulated and sampled for ∼6.5 months in a closed borehole section. The trace elements represented non-sorbing tracers and sorbing tracers for which the sorption was dominated by a cation exchange mechanism, a surface complexation mechanism, or dependent on an electrochemical reduction in order to reach the tetravalent state (oxidation state IV) considered very strongly sorbing. The borehole section in contact with the tracer labelled groundwater consisted in part of a natural fracture surface and a borehole section in the unaltered matrix rock, devoid of natural fractures. Water samples were regularly extracted and analysed for trace element concentration and a few ion exchange speciation and filtered samplings were also conducted. Independent colloid filtering and chemical speciation calculations were performed in support the evaluation. Sorption was demonstrated for a series of elements present in the experiment. The amounts lost of the different respective tracers from the aqueous phase follow very well the general understanding of the relative sorption strength of the tracers, as inferred from e.g. batch sorption experiments and dynamic in situ tracer experiments. The chemical speciation calculations of the different tracers were in line with the results of the ion exchange speciation performed during the experiment. With the exception of UO 2 2+ carbonate complexes formed, no strong indications were obtained that aqueous complexation prevents adsorption under the chemical conditions of the experiment. The 20 nm filtered sampling indicated that radionuclide

  16. Long Term Sorption Diffusion Experiment (LTDE-SD). Performance of main in situ experiment and results from water phase measurements

    Energy Technology Data Exchange (ETDEWEB)

    Widestrand, Henrik; Byegaard, Johan; Nilsson, Kersti; Hoeglund, Susanne; Gustafsson, Erik (Geosigma AB, Uppsala (Sweden)); Kronberg, Magnus (Swedish Nuclear Fuel and Waste Management Co. (Sweden))

    2010-12-15

    The LTDE-SD experiment, (Long Term Sorption Diffusion Experiment) aimed at increasing the scientific knowledge of sorption and diffusion under in situ conditions and to provide data for performance and safety assessment calculations. Performance and results of the in situ experiment phase are presented in the report. In total, 21 radionuclide trace elements and one stable trace element were injected, circulated and sampled for approx6.5 months in a closed borehole section. The trace elements represented non-sorbing tracers and sorbing tracers for which the sorption was dominated by a cation exchange mechanism, a surface complexation mechanism, or dependent on an electrochemical reduction in order to reach the tetravalent state (oxidation state IV) considered very strongly sorbing. The borehole section in contact with the tracer labelled groundwater consisted in part of a natural fracture surface and a borehole section in the unaltered matrix rock, devoid of natural fractures. Water samples were regularly extracted and analysed for trace element concentration and a few ion exchange speciation and filtered samplings were also conducted. Independent colloid filtering and chemical speciation calculations were performed in support the evaluation. Sorption was demonstrated for a series of elements present in the experiment. The amounts lost of the different respective tracers from the aqueous phase follow very well the general understanding of the relative sorption strength of the tracers, as inferred from e.g. batch sorption experiments and dynamic in situ tracer experiments. The chemical speciation calculations of the different tracers were in line with the results of the ion exchange speciation performed during the experiment. With the exception of UO{sub 2} 2+ carbonate complexes formed, no strong indications were obtained that aqueous complexation prevents adsorption under the chemical conditions of the experiment. The 20 nm filtered sampling indicated that

  17. Feasibility of utilizing the SD BIOLINE Onchocerciasis IgG4 rapid test in onchocerciasis surveillance in Senegal

    Science.gov (United States)

    Dieye, Yakou; Barrett, Kelsey L.; Gerth-Guyette, Emily; Di Giorgio, Laura; Golden, Allison; Faulx, Dunia; Kalnoky, Michael; Ndiaye, Marie Khemesse Ngom; Sy, Ngayo; Mané, Malang; Faye, Babacar; Sarr, Mamadou; Dioukhane, Elhadji Mamadou; Peck, Roger B.; Guinot, Philippe; de los Santos, Tala

    2017-01-01

    As effective onchocerciasis control efforts in Africa transition to elimination efforts, different diagnostic tools are required to support country programs. Senegal, with its long standing, successful control program, is transitioning to using the SD BIOLINE Onchocerciasis IgG4 (Ov16) rapid test over traditional skin snip microscopy. The aim of this study is to demonstrate the feasibility of integrating the Ov16 rapid test into onchocerciasis surveillance activities in Senegal, based on the following attributes of acceptability, usability, and cost. A cross-sectional study was conducted in 13 villages in southeastern Senegal in May 2016. Individuals 5 years and older were invited to participate in a demographic questionnaire, an Ov16 rapid test, a skin snip biopsy, and an acceptability interview. Rapid test technicians were interviewed and a costing analysis was conducted. Of 1,173 participants, 1,169 (99.7%) agreed to the rapid test while 383 (32.7%) agreed to skin snip microscopy. The sero-positivity rate of the rapid test among those tested was 2.6% with zero positives 10 years and younger. None of the 383 skin snips were positive for Ov microfilaria. Community members appreciated that the rapid test was performed quickly, was not painful, and provided reliable results. The total costs for this surveillance activity was $22,272.83, with a cost per test conducted at $3.14 for rapid test, $7.58 for skin snip microscopy, and $13.43 for shared costs. If no participants had refused skin snip microscopy, the total cost per method with shared costs would have been around $16 per person tested. In this area with low onchocerciasis sero-positivity, there was high acceptability and perceived value of the rapid test by community members and technicians. This study provides evidence of the feasibility of implementing the Ov16 rapid test in Senegal and may be informative to other country programs transitioning to Ov16 serologic tools. PMID:28972982

  18. Field application of SD bioline malaria Ag Pf/Pan rapid diagnostic test for malaria in Greece.

    Science.gov (United States)

    Tseroni, Maria; Pervanidou, Danai; Tserkezou, Persefoni; Rachiotis, George; Pinaka, Ourania; Baka, Agoritsa; Georgakopoulou, Theano; Vakali, Annita; Dionysopoulou, Martha; Terzaki, Irene; Marka, Andriani; Detsis, Marios; Evlampidou, Zafiroula; Mpimpa, Anastasia; Vassalou, Evdokia; Tsiodras, Sotirios; Tsakris, Athanasios; Kremastinou, Jenny; Hadjichristodoulou, Christos

    2015-01-01

    Greece, a malaria-free country since 1974, has experienced re-emergence of Plasmodium vivax autochthonous malaria cases in some agriculture areas over the last three years. In early 2012, an integrated control programme (MALWEST Project) was launched in order to prevent re-establishment of the disease. In the context of this project, the rapid diagnostic tests (RDT) of SD Bioline Malaria Ag Pf/Pan that detects hrp-2 and pan-LDH antigens were used. The aim of this study was to assess the field application of the RDT for the P. vivax diagnosis in comparison to light microscopy and polymerase chain reaction (PCR). A total of 955 samples were tested with all three diagnostic tools. Agreement of RDT against microscopy and PCR for the diagnosis of P. vivax was satisfactory (K value: 0.849 and 0.976, respectively). The sensitivity, specificity and positive predictive value of RDT against PCR was 95.6% (95% C.I.: 84.8-99.3), 100% (95% C.I.: 99.6-100.0) and 100% (95% CI: 91.7-100.0) respectively, while the sensitivity, specificity and positive predictive value of RDT against microscopic examination was 97.4% (95% C.I.: 86.1-99.6), 99.4% (95% C.I.: 98.6-99.8) and 86.1% (95% CI: 72.1-94.7), respectively. Our results indicate that RDT performed satisfactory in a non-endemic country and therefore is recommended for malaria diagnosis, especially in areas where health professionals lack experience on light microscopy.

  19. Feasibility of utilizing the SD BIOLINE Onchocerciasis IgG4 rapid test in onchocerciasis surveillance in Senegal.

    Directory of Open Access Journals (Sweden)

    Yakou Dieye

    2017-10-01

    Full Text Available As effective onchocerciasis control efforts in Africa transition to elimination efforts, different diagnostic tools are required to support country programs. Senegal, with its long standing, successful control program, is transitioning to using the SD BIOLINE Onchocerciasis IgG4 (Ov16 rapid test over traditional skin snip microscopy. The aim of this study is to demonstrate the feasibility of integrating the Ov16 rapid test into onchocerciasis surveillance activities in Senegal, based on the following attributes of acceptability, usability, and cost. A cross-sectional study was conducted in 13 villages in southeastern Senegal in May 2016. Individuals 5 years and older were invited to participate in a demographic questionnaire, an Ov16 rapid test, a skin snip biopsy, and an acceptability interview. Rapid test technicians were interviewed and a costing analysis was conducted. Of 1,173 participants, 1,169 (99.7% agreed to the rapid test while 383 (32.7% agreed to skin snip microscopy. The sero-positivity rate of the rapid test among those tested was 2.6% with zero positives 10 years and younger. None of the 383 skin snips were positive for Ov microfilaria. Community members appreciated that the rapid test was performed quickly, was not painful, and provided reliable results. The total costs for this surveillance activity was $22,272.83, with a cost per test conducted at $3.14 for rapid test, $7.58 for skin snip microscopy, and $13.43 for shared costs. If no participants had refused skin snip microscopy, the total cost per method with shared costs would have been around $16 per person tested. In this area with low onchocerciasis sero-positivity, there was high acceptability and perceived value of the rapid test by community members and technicians. This study provides evidence of the feasibility of implementing the Ov16 rapid test in Senegal and may be informative to other country programs transitioning to Ov16 serologic tools.

  20. Feasibility of utilizing the SD BIOLINE Onchocerciasis IgG4 rapid test in onchocerciasis surveillance in Senegal.

    Science.gov (United States)

    Dieye, Yakou; Storey, Helen L; Barrett, Kelsey L; Gerth-Guyette, Emily; Di Giorgio, Laura; Golden, Allison; Faulx, Dunia; Kalnoky, Michael; Ndiaye, Marie Khemesse Ngom; Sy, Ngayo; Mané, Malang; Faye, Babacar; Sarr, Mamadou; Dioukhane, Elhadji Mamadou; Peck, Roger B; Guinot, Philippe; de Los Santos, Tala

    2017-10-01

    As effective onchocerciasis control efforts in Africa transition to elimination efforts, different diagnostic tools are required to support country programs. Senegal, with its long standing, successful control program, is transitioning to using the SD BIOLINE Onchocerciasis IgG4 (Ov16) rapid test over traditional skin snip microscopy. The aim of this study is to demonstrate the feasibility of integrating the Ov16 rapid test into onchocerciasis surveillance activities in Senegal, based on the following attributes of acceptability, usability, and cost. A cross-sectional study was conducted in 13 villages in southeastern Senegal in May 2016. Individuals 5 years and older were invited to participate in a demographic questionnaire, an Ov16 rapid test, a skin snip biopsy, and an acceptability interview. Rapid test technicians were interviewed and a costing analysis was conducted. Of 1,173 participants, 1,169 (99.7%) agreed to the rapid test while 383 (32.7%) agreed to skin snip microscopy. The sero-positivity rate of the rapid test among those tested was 2.6% with zero positives 10 years and younger. None of the 383 skin snips were positive for Ov microfilaria. Community members appreciated that the rapid test was performed quickly, was not painful, and provided reliable results. The total costs for this surveillance activity was $22,272.83, with a cost per test conducted at $3.14 for rapid test, $7.58 for skin snip microscopy, and $13.43 for shared costs. If no participants had refused skin snip microscopy, the total cost per method with shared costs would have been around $16 per person tested. In this area with low onchocerciasis sero-positivity, there was high acceptability and perceived value of the rapid test by community members and technicians. This study provides evidence of the feasibility of implementing the Ov16 rapid test in Senegal and may be informative to other country programs transitioning to Ov16 serologic tools.

  1. Systems dynamics (SD) strategy for Small Modular Reactor (SMR) marketing - Conquest at the MIT Energy Laboratory (Pres. MIT Energy Initiative)

    Energy Technology Data Exchange (ETDEWEB)

    Woo, T. H. [Yonsei University, Wonju (Korea, Republic of)

    2016-10-15

    This reactor has the specification as the power is 330 MWt pressurized water reactor (PWR) with integral steam generators and advanced safety features. In the plant design, it is planned for electricity generation of 100 MWe and thermal applications of seawater desalination where the life span is a 60-year operation design and three-year refueling cycle. Regarding of the licensing, the standard design was approved from the Korean regulator in mid-2012 and the Korea Atomic Energy Research Institute (KAERI) has a plan to build a demonstration plant to operate from 2017. According to the previous study of the marketing strategy of the Canadian small reactor, Safe LOW-POwer Kritical Experiment (SLOWPOKE) reactor had been investigated in 1988. Therefore, it is interesting to compare SMART and SLOWPOKE. In this work, it is to find out the strategy of the successful marketing of SMART and suggest continuous marketing prospects. There are specifications and parameters of SMART in Tables 1 and 2. The public acceptance (PA) had been studies as safety-public interpretation, SLOWPOKE safety-experience and process, and economics in the previous paper of the SLOWPOKE, which was about the marketing strategy for the commercial nuclear reactor. The highly cognitive networking based dynamical modeling was discussed where the system is treated by a complex and non-linear way. The linear networking of the interested issue was changed by the SD algorithm where the feedback and multiple connections are added to the original networking theory. The non-linear method has shown the complexity of the marketing strategy, especially for the NPP which is the very expensive and safety focused facility.

  2. PENERAPAN PEMBELAJARAN SAINS DENGAN PENDEKATAN SETS PADA MATERI CAHAYA UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS V SD

    Directory of Open Access Journals (Sweden)

    Z. Ragil

    2012-02-01

    Full Text Available Penelitian ini dilatarbelakangi oleh nilai rata-rata dan presentase ketuntasan klasikal siswa yang masih rendah pada matapelajaran sains di SD. Untuk mengatasi permasalahan tersebut, diterapkan pembelajaran sains dengan pendekatan SETS(Science, Environment, Technology, Society. SETS adalah visi atau pendekatan pembelajaran yang memiliki fokus utamamemberikan pengalaman penyelidikan pada siswa untuk mendapatkan pengetahuan yang berkaitan dengan sains, lingkungan,teknologi, dan masyarakat serta kesalingketerkaitannya. Penelitian ini bertujuan untuk mendeskripsikan pembelajaran sainsdengan pendekatan SETS yang diterapkan, dan mengetahui peningkatan hasil belajar. Data penelitian berupa hasil belajar kognitifdiperoleh dari test, hasil belajar afektif dan psikomotorik diperoleh dari lembar observasi, untuk mengetahui peningkatan hasilbelajar siswa secara keseluruhan digunakan dalam penelitian ini adalah uji gain. Hasil analisis data menunjukkan adanyapeningkatan hasil belajar kognitif, afektif dan psikomotorik. Dari hasil analisis tersebut dapat disimpulkan bahwa penerapanpembelajaran sains dengan pendekatan SETS dapat meningkatkan hasil belajar siswa. This research was carried out with the background of low average mark and classical mastery percentage of science subject ofelementary school student. With the purpose of the research of describing science lesson with SETS approach to increase learningachievement, the researcher applies SETS approach in the lesson of light material. The data of cognitive learning achievement isfound by using test, while the affective and psychomotor ones are taken from observation sheets. In order to examine the overalllearning achievement, this study uses gain test. The data analysis shows that there is an improvement of cognitive, affective andpsychomotor learning achievements of student after having the lesson. It is concluded that the application of science lesson withSETS approach can increase the students

  3. Time-resolved and volumetric PIV measurements of a transitional separation bubble on an SD7003 airfoil

    Energy Technology Data Exchange (ETDEWEB)

    Burgmann, S.; Dannemann, J.; Schroeder, W. [RWTH Aachen University, Department of Mechanical Engineering, Institute of Aerodynamics, Aachen (Germany)

    2008-04-15

    To comprehensively understand the effects of Kelvin-Helmholtz instabilities on a transitional separation bubble on the suction side of an airfoil regarding as to flapping of the bubble and its impact on the airfoil performance, the temporal and spatial structure of the vortices occurring at the downstream end of the separation bubble is investigated. Since the bubble variation leads to a change of the pressure distribution, the investigation of the instantaneous velocity field is essential to understand the details of the overall airfoil performance. This vortex formation in the reattachment region on the upper surface of an SD7003 airfoil is analyzed in detail at different angles of attack. At a Reynolds number Re{sub c} < 100,000 the laminar boundary layer separates at angles of attack >4 . Due to transition processes, turbulent reattachment of the separated shear layer occurs enclosing a locally confined recirculation region. To identify the location of the separation bubble and to describe the dynamics of the reattachment, a time-resolved PIV measurement in a single light-sheet is performed. To elucidate the spatial structure of the flow patterns in the reattachment region in time and space, a stereo scanning PIV set-up is applied. The flow field is recorded in at least ten successive light-sheet planes with two high-speed cameras enclosing a viewing angle of 65 to detect all three velocity components within a light-sheet leading to a time-resolved volumetric measurement due to a high scanning speed. The measurements evidence the development of quasi-periodic vortex structures. The temporal dynamics of the vortex roll-up, initialized by the Kelvin-Helmholtz (KH) instability, is shown as well as the spatial development of the vortex roll-up process. Based on these measurements a model for the evolving vortex structure consisting of the formation of c-shape vortices and their transformation into screwdriver vortices is introduced. (orig.)

  4. Systems dynamics (SD) strategy for Small Modular Reactor (SMR) marketing - Conquest at the MIT Energy Laboratory (Pres. MIT Energy Initiative)

    International Nuclear Information System (INIS)

    Woo, T. H.

    2016-01-01

    This reactor has the specification as the power is 330 MWt pressurized water reactor (PWR) with integral steam generators and advanced safety features. In the plant design, it is planned for electricity generation of 100 MWe and thermal applications of seawater desalination where the life span is a 60-year operation design and three-year refueling cycle. Regarding of the licensing, the standard design was approved from the Korean regulator in mid-2012 and the Korea Atomic Energy Research Institute (KAERI) has a plan to build a demonstration plant to operate from 2017. According to the previous study of the marketing strategy of the Canadian small reactor, Safe LOW-POwer Kritical Experiment (SLOWPOKE) reactor had been investigated in 1988. Therefore, it is interesting to compare SMART and SLOWPOKE. In this work, it is to find out the strategy of the successful marketing of SMART and suggest continuous marketing prospects. There are specifications and parameters of SMART in Tables 1 and 2. The public acceptance (PA) had been studies as safety-public interpretation, SLOWPOKE safety-experience and process, and economics in the previous paper of the SLOWPOKE, which was about the marketing strategy for the commercial nuclear reactor. The highly cognitive networking based dynamical modeling was discussed where the system is treated by a complex and non-linear way. The linear networking of the interested issue was changed by the SD algorithm where the feedback and multiple connections are added to the original networking theory. The non-linear method has shown the complexity of the marketing strategy, especially for the NPP which is the very expensive and safety focused facility

  5. Scan direction induced charging dynamics and the application for detection of gate to S/D shorts in logic devices

    Science.gov (United States)

    Lei, Ming; Tian, Qing; Wu, Kevin; Zhao, Yan

    2016-03-01

    Gate to source/drain (S/D) short is the most common and detrimental failure mechanism for advanced process technology development in Metal-Oxide-Semiconductor-Field-Effect-Transistor (MOSFET) device manufacturing. Especially for sub-1Xnm nodes, MOSFET device is more vulnerable to gate-S/D shorts due to the aggressive scaling. The detection of this kind of electrical short defect is always challenging for in-line electron beam inspection (EBI), especially new shorting mechanisms on atomic scale due to new material/process flow implementation. The second challenge comes from the characterization of the shorts including identification of the exact shorting location. In this paper, we demonstrate unique scan direction induced charging dynamics (SDCD) phenomenon which stems from the transistor level response from EBI scan at post metal contact chemical-mechanical planarization (CMP) layers. We found that SDCD effect is exceptionally useful for gate-S/D short induced voltage contrast (VC) defect detection, especially for identification of shorting locations. The unique SDCD effect signatures of gate-S/D shorts can be used as fingerprint for ground true shorting defect detection. Correlation with other characterization methods on the same defective location from EBI scan shows consistent results from various shorting mechanism. A practical work flow to implement the application of SDCD effect for in-line EBI monitor of critical gate-S/D short defects is also proposed, together with examples of successful application use cases which mostly focus on static random-access memory (SRAM) array regions. Although the capability of gate-S/D short detection as well as expected device response is limited to passing transistors and pull-down transistors due to the design restriction from standard 6-cell SRAM structure, SDCD effect is proven to be very effective for gate-S/D short induced VC defect detection as well as yield learning for advanced technology development.

  6. Excited states in 22Mg via the 12C(12C,2n)22Mg reaction

    International Nuclear Information System (INIS)

    Jewett, Cybele; Baktash, Cyrus; Bardayan, Daniel W.; Blackmon, Jeff C.; Chipps, K.; Galindo-Uribarri, Alfredo; Greife, U.; Gross, Carl J.; Jones, K. L.; Liang, Junjien; Livesay, Jake; Kozub, R. L.; Nesaraja, Caroline D; Radford, David C.; Sarazin, F.; Smith, Michael Scott; Thomas, J. S.; Yu, Chang-Hong

    2007-01-01

    The 12C(12C, 2n)22Mg reaction was measured with the CLARION array and the RMS separator at the Holifield Facility of Oak Ridge National Laboratory. This experiment was performed to gather more information on the excited states in 22Mg, which might be of relevance to recent radioactive ion beam measurements of the astrophysically important 21Na(p,γ)22Mg reaction. The results are compared to direct measurements, transfer experiments and a competing experiment performed with Gammasphere

  7. Mifepristone 5 mg versus 10 mg for emergency contraception: double-blind randomized clinical trial

    Directory of Open Access Journals (Sweden)

    Carbonell JL

    2015-01-01

    Full Text Available Josep Lluis Carbonell,1 Ramon Garcia,2 Adriana Gonzalez,2 Andres Breto,2 Carlos Sanchez2 1Mediterranea Medica Clinic, Valencia, Spain; 2Eusebio Hernandez Gynecology and Obstetrics Teaching Hospital, Havana, Cuba Purpose: To estimate the efficacy and safety of 5 mg and 10 mg mifepristone for emergency contraception up to 144 hours after unprotected coitus. Methods: This double-blind randomized clinical trial was carried out at Eusebio Hernandez Hospital (Havana, Cuba. A total of 2,418 women who requested emergency contraception after unprotected coitus received either 5 mg or 10 mg mifepristone. The variables for assessing efficacy were the pregnancies that occurred and the fraction of pregnancies that were prevented. Other variables assessed were the side effects of mifepristone, vaginal bleeding, and changes in the date of the following menstruation. Results: There were 15/1,206 (1.2% and 9/1,212 (0.7% pregnancies in the 5 mg and 10 mg group, respectively (P=0.107. There were 88% and 93% prevented pregnancies in the 5 mg and 10 mg group, respectively. The side effect profiles were similar in both groups. Delayed menstruation ≥7 days was experienced by 4.9% and 11.0% of subjects in the 5 mg and 10 mg group, respectively (P=0.001. There was a significant high failure rate for women weighing >75 kg in the 5 mg group. Conclusion: It would be advisable to use the 10 mg dose of mifepristone for emergency contraception as there was a trend suggesting that the failure rate of the larger dose was lower. Keywords: mifepristone, emergency contraception

  8. Superconducting properties of MgB2 particle impregnated with Mg-based alloys

    International Nuclear Information System (INIS)

    Shimizu, Yusuke; Matsuda, Kenji; Mizutani, Manabu; Nishimura, Katsuhiko; Kawabata, Tokimasa; Ikeno, Susumu; Hishinuma, Yoshimitsu; Aoyama, Shigeki

    2011-01-01

    The three-dimensional penetration method combined with semi-solid casting (SS-3DPC) was utilized to prepare magnesium diboride (MgB 2 ) powder composite materials with various host materials of Mg, Mg-3%Al, Mg-3%Al-1%Zn, Mg-9%Al, and Mg-9%Al-1%Zn. X-ray diffraction measurements indicated predominant peak patterns of MgB 2 and a host alloy, implying that the host material tightly bonded MgB 2 grains without melting the MgB 2 powder. This was confirmed by SEM images. Measured electrical resistivity and magnetization versus temperature showed clear signals of superconducting transition temperature of 27-38 K for all the samples cut out from the billets. Magnetic hysteresis loop observed at 5 K enabled us to estimate a critical current density (J c ) based on the extended Bean model. Additions of aluminum and zinc elements to magnesium host-matrix were found to enhance J c and increase residual resistivity (ρ 0 ) suggesting that aluminum and zinc have an effect on pinning magnetic flux flow for J c enhancement, and scattering conduction electrons for increase of ρ 0 . (author)

  9. A population of serumdeprivation-induced bone marrow stem cells (SD-BMSC) expresses marker typical for embryonic and neural stem cells

    International Nuclear Information System (INIS)

    Sauerzweig, Steven; Munsch, Thomas; Lessmann, Volkmar; Reymann, Klaus G.; Braun, Holger

    2009-01-01

    The bone marrow represents an easy accessible source of adult stem cells suitable for various cell based therapies. Several studies in recent years suggested the existence of pluripotent stem cells within bone marrow stem cells (BMSC) expressing marker proteins of both embryonic and tissue committed stem cells. These subpopulations were referred to as MAPC, MIAMI and VSEL-cells. Here we describe SD-BMSC (serumdeprivation-induced BMSC) which are induced as a distinct subpopulation after complete serumdeprivation. SD-BMSC are generated from small-sized nestin-positive BMSC (S-BMSC) organized as round-shaped cells in the top layer of BMSC-cultures. The generation of SD-BMSC is caused by a selective proliferation of S-BMSC and accompanied by changes in both morphology and gene expression. SD-BMSC up-regulate not only markers typical for neural stem cells like nestin and GFAP, but also proteins characteristic for embryonic cells like Oct4 and SOX2. We hypothesize, that SD-BMSC like MAPC, MIAMI and VSEL-cells represent derivatives from a single pluripotent stem cell fraction within BMSC exhibiting characteristics of embryonic and tissue committed stem cells. The complete removal of serum might offer a simple way to specifically enrich this fraction of pluripotent embryonic like stem cells in BMSC cultures

  10. Electronic structure of MgB2

    Indian Academy of Sciences (India)

    Abstract. Results of ab initio electronic structure calculations on the compound MgB2 using the. FPLAPW method employing GGA for the exchange-correlation energy are presented. Total energy minimization enables us to estimate the equilibrium volume, c/a ratio and the bulk modulus, all of which are in excellent ...

  11. Electronic structure of MgB 2

    Indian Academy of Sciences (India)

    Results of ab initio electronic structure calculations on the compound MgB2 using the FPLAPW method employing GGA for the exchange-correlation energy are presented. Total energy minimization enables us to estimate the equilibrium volume, / ratio and the bulk modulus, all of which are in excellent agreement with ...

  12. doped LiMgPO4 phosphor

    Indian Academy of Sciences (India)

    attention because of their remarkable luminescence proper- ties and .... Figure 1. (a) X-ray diffraction patterns of LiMgPO4:Tb3+ phosphor and (b) standard data. ICDD file. .... ground signal which affects the signal to noise ratio [17]. MDD was ...

  13. Diagnostic Accuracy of Spectralis SD OCT Automated Macular Layers Segmentation to Discriminate Normal from Early Glaucomatous Eyes.

    Science.gov (United States)

    Pazos, Marta; Dyrda, Agnieszka Anna; Biarnés, Marc; Gómez, Alicia; Martín, Carlos; Mora, Clara; Fatti, Gianluca; Antón, Alfonso

    2017-08-01

    To evaluate the accuracy of the macular retinal layer segmentation software of the Spectralis spectral-domain (SD) optical coherence tomography (OCT) device (Heidelberg Engineering, Inc., Heidelberg, Germany) to discriminate between healthy and early glaucoma (EG) eyes. Prospective, cross-sectional study. Forty EG eyes and 40 healthy controls were included. All participants were examined using the standard posterior pole and the peripapillary retinal nerve fiber layer (pRNFL) protocols of the Spectralis OCT device. Using an Early Treatment Diagnostic Retinopathy Study circle at the macular level, the automated retinal segmentation software was applied to determine thicknesses of the following parameters: total retinal thickness, inner retinal layer (IRL), macular retinal nerve fiber layer (mRNFL), macular ganglion cell layer (mGCL), macular inner plexiform layer (mIPL), macular inner nuclear layer (mINL), macular outer plexiform layer (mOPL), macular outer nuclear layer (mONL), photoreceptors (PR), and retinal pigmentary epithelium (RPE). The ganglion cell complex (GCC) was determined by adding the mRNFL, mGCL, and mIPL parameters and the ganglion cell layer-inner plexiform layer (mGCL-IPL) was determined by combining the mGCL and mIPL parameters. Thickness of each layer was compared between the groups, and the layer and sector with the best area under the receiver operating characteristic curve (AUC) were identified. Comparison of pRNFL, IRL, mRNFL, mGCL, mIPL, mGCC, mGCL-IPL, mINL, mOPL, mONL, PR, and RPE parameters and total retinal thicknesses between groups for the different areas and their corresponding AUCs. Peripapillary RNFL was significantly thinner in the EG group globally and in all 6 sectors assessed (P < 0.0005). For the macular variables, retinal thickness was significantly reduced in the EG group for total retinal thickness, mIRL, mRNFL, mGCL, and mIPL. The 2 best isolated parameters to discriminate between the 2 groups were pRNFL (AUC, 0.956) and

  14. Preliminary study of the characteristics of a high Mg containing Al-Mg-Si alloy

    International Nuclear Information System (INIS)

    Yan, F; McKay, B J; Fan, Z; Chen, M F

    2012-01-01

    An Al-20Mg-4Si high Mg containing alloy has been produced and its characteristics investigated. The as-cast alloy revealed primary Mg 2 Si particles evenly distributed throughout an α-Al matrix with a β-Al 3 Mg 2 fully divorced eutectic phase observed in interdendritic regions. The Mg 2 Si particles displayed octahedral, truncated octahedral, and hopper morphologies. Additions of Sb, Ti and Zr had a refining influence reducing the size of the Mg 2 Si from 52 ± 4 μm to 25 ± 0.1 μm, 35 ± 1 μm and 34 ± 1 μm respectively. HPDC tensile test samples could be produced with a 0.6 wt.% Mn addition which prevented die soldering. Solution heating for 1 hr was found to dissolve the majority of the Al 3 Mg 2 eutectic phase with no evidence of any effect on the primary Mg 2 Si. Preliminary results indicate that the heat treatment has a beneficial effect on the elongation and the UTS.

  15. Investigation of the 24Mg(d, p)25Mg reaction

    NARCIS (Netherlands)

    Meurders, F.; Korte, G. de

    1975-01-01

    Abstract Proton angular distributions from the 24Mg(d, p)25Mg reaction at Ed = 12.0 MeV have been measured with a split-pole magnetic spectrograph for Ex < 6 MeV at an average resolution (FWHM) of 7 keV. New ln values have been determined for three levels. A DWBA analysis yielded spectroscopic

  16. Investigation of the 26Mg(d, p)27Mg reaction

    NARCIS (Netherlands)

    Meurders, F.; Steld, A. van der

    1974-01-01

    The angular distributions of 31 protons groups from the 26Mg(d, p)27Mg reaction have been measured at Ed = 12.0 MeV with a split-pole magnetic spectrograph. Excitation energies have been determined for 29 bound states. Three new levels have been found. A DWBA analysis yields ln values for 19 levels;

  17. Respiratory outcomes following 100 mg/kg v. 200 mg/kg of poractant ...

    African Journals Online (AJOL)

    In keeping with current evidence, the initial dose of poractant alpha was increased from 100 mg/kg to 200 mg/kg. e outcomes of newborns requiring treatment with surfactant before and aer this change were reviewed. Methods. Electronic clinical records were reviewed of infants admitted to ACH who received surfactant ...

  18. Mg/Ca ratio in fertilization and agricultural soils, Mg percent of liming ...

    African Journals Online (AJOL)

    Strong increase of NPK (nitrogen, phosphorus and potassium) in mineral fertilization (fm) included relative delay in Mg supplementation and dilution in plant available silicon (Si) via recycled nutrients (rcl). (Silicon is not included in essential fertilizers in Finland.) Methods: We have assessed old data on Ca and Mg in ...

  19. Betel quid chewing elevates human exposure to arsenic, cadmium and lead.

    Science.gov (United States)

    Al-Rmalli, Shaban W; Jenkins, Richard O; Haris, Parvez I

    2011-06-15

    Several studies have reported increased skin lesions in betel quid (a mixture of Piper betel leaves, areca nut, tobacco/flavoured tobacco, lime) chewers compared to non-chewers, exposed to arsenic (As) contaminated drinking water in Bangladesh and India. The current study has determined As, cadmium (Cd) and lead (Pb) levels of betel quids and its components using inductively coupled plasma mass spectrometry (ICP-MS). The highest concentrations of As were found in slaked lime (4.56 mg kg(-1)) followed by Piper betel leaves (0.406 mg kg(-1)) and flavoured tobacco (zarda) (0.285 mg kg(-1)), with a mean concentrations of As in betel quids of 0.035 mg kg(-1) (SD 0.02 mg kg(-1)). Mean concentrations of Cd and Pb in ordinary quids were 0.028 (SD 0.07 mg kg(-1)) and 0.423 (SD 1.4 mg kg(-1)), respectively. We estimated that a daily intake of 6 betel quids could contribute 1.2, 1.9 and 8.5% of the provisional maximum tolerable daily intake (PMDTI) for As, Cd and Pb, respectively. Since betel quid chewing is most prevalent among women, our finding raises concern that women chewers - especially pregnant chewers - may be harming their health and that of their unborn babies through increased exposure to a mixture of toxic elements (As, Cd and Pb). Copyright © 2011 Elsevier B.V. All rights reserved.

  20. Betel quid chewing elevates human exposure to arsenic, cadmium and lead

    International Nuclear Information System (INIS)

    Al-Rmalli, Shaban W.; Jenkins, Richard O.; Haris, Parvez I.

    2011-01-01

    Several studies have reported increased skin lesions in betel quid (a mixture of Piper betel leaves, areca nut, tobacco/flavoured tobacco, lime) chewers compared to non-chewers, exposed to arsenic (As) contaminated drinking water in Bangladesh and India. The current study has determined As, cadmium (Cd) and lead (Pb) levels of betel quids and its components using inductively coupled plasma mass spectrometry (ICP-MS). The highest concentrations of As were found in slaked lime (4.56 mg kg -1 ) followed by Piper betel leaves (0.406 mg kg -1 ) and flavoured tobacco (zarda) (0.285 mg kg -1 ), with a mean concentrations of As in betel quids of 0.035 mg kg -1 (SD 0.02 mg kg -1 ). Mean concentrations of Cd and Pb in ordinary quids were 0.028 (SD 0.07 mg kg -1 ) and 0.423 (SD 1.4 mg kg -1 ), respectively. We estimated that a daily intake of 6 betel quids could contribute 1.2, 1.9 and 8.5% of the provisional maximum tolerable daily intake (PMDTI) for As, Cd and Pb, respectively. Since betel quid chewing is most prevalent among women, our finding raises concern that women chewers - especially pregnant chewers - may be harming their health and that of their unborn babies through increased exposure to a mixture of toxic elements (As, Cd and Pb).

  1. Decay of a Jπ=36+ Resonance in the 24Mg+24Mg Reaction

    International Nuclear Information System (INIS)

    Salsac, M.-D.; Haas, F.; Courtin, S.

    2005-01-01

    For the 24 Mg+ 24 Mg reaction, striking narrow and correlated resonance structures have been observed previously in the excitation functions of the elastic and low-lying channels. In our study we have decided to focus on the resonance at E C M =45.7 MeV, which is known to have J π =36 + . Despite the very high excitation energy(∼60 MeV) in the 48 Cr composite system, this resonance has a narrow total width of 170 keV. To determine precisely which states in the inelastic 24 Mg channels carry away the resonance flux, an experiment, on the 24 Mg + 24 Mg reaction at energies On and OFF resonance, has been performed at the Legnaro Tandem accelerator using the Prisma fragment spectrometer associated with the CLARA γ array

  2. Evaluation of the levels of Br, Cl, K, Mg, Mn and V in Perna perna mussels (Linnaeus, 1758: Mollusca Bivalvia) collected in the coast of Sao Paulo state, Brazil

    International Nuclear Information System (INIS)

    Seo, Daniele

    2012-01-01

    were cleaned, crushed, homogenized and dried by lyophilization for further analysis by INAA. The INAA procedure consisted of irradiating aliquots of the samples obtained in powder form in polyethylene envelopes in the nuclear research reactor IEA - R1 of IPEN / CNEN - SP together with synthetic standards of elements. The irradiation time in the reactor was 8 to 10 s under the thermal neutron flux of 6.6 x 1012 n cm-2 s-1. The concentrations of the elements were calculated using the comparative method. The INAA procedure was validated with respect to accuracy and precision, through the analysis of certified reference materials NIST SRM 1566b Oyster Tissue and NIST SRM 2876 Mussel Tissue. The results of these certified reference materials indicated good quality of results with respect to precision and accuracy. The ranges of concentrations (dry basis weight) of the elements obtained in mussels collected in Santos and Praia da Cocanha for the four seasons of the year were: 173.80 to 358.99 mg kg-1 for Br; 45658 ± 1811 to 109166 ± 824 mg kg -1 for Cl; 7043 ± 856 to 12506 ± 675 mg kg -1 for K; 2774 ± 211 to 5691 ± 717 mg kg -1 for Mg; 7.01 ± 0.30 to 29.74 ± 3.32 mg kg -1 for Mn and 0.77 ± 0.02 to 3.43 ± 0.28 mg kg -1 for V. The seasonal and spatial variations of the concentrations of these elements were studied and the values compared to the literature. From the results obtained it can be concluded that the species of Perna perna mussels, can be used as biomonitors of marine contamination. (author)

  3. Molecular characterization and specific detection of Anaplasma species (AP-sd) in sika deer and its first detection in wild brown bears and rodents in Hokkaido, Japan.

    Science.gov (United States)

    Moustafa, Mohamed Abdallah Mohamed; Lee, Kyunglee; Taylor, Kyle; Nakao, Ryo; Sashika, Mariko; Shimozuru, Michito; Tsubota, Toshio

    2015-12-01

    A previously undescribed Anaplasma species (herein referred to as AP-sd) has been detected in sika deer, cattle and ticks in Japan. Despite being highly similar to some strains of A. phagocytophilum, AP-sd has never been detected in humans. Its ambiguous epidemiology and the lack of tools for its specific detection make it difficult to understand and interpret the prevalence of this Anaplasma species. We developed a method for specific detection, and examined AP-sd prevalence in Hokkaido wildlife. Our study included 250 sika deer (Cervus nippon yesoensis), 13 brown bears (Ursus arctos yesoensis) and 252 rodents including 138 (Apodemus speciosus), 45 (Apodemus argenteus), 42 (Myodes rufocanus) and 27 (Myodes rutilus) were collected from Hokkaido island, northern Japan, collected during 2010 to 2015. A 770 bp and 382 bp segment of the 16S rRNA and gltA genes, respectively, were amplified by nested PCR. Results were confirmed by cloning and sequencing of the positive PCR products. A reverse line blot hybridization (RLB) based on the 16S rRNA gene was then developed for the specific detection of AP-sd. The prevalence of AP-sd by nested PCR in sika deer was 51% (128/250). We detected this Anaplasma sp. for the first time in wild brown bears and rodents with a prevalence of 15% (2/13) and 2.4% (6/252), respectively. The sequencing results of the 16S rRNA and gltA gene amplicons were divergent from the selected A. phagocytophilum sequences in GenBank. Using a newly designed AP-sd specific probe for RLB has enabled us to specifically detect this Anaplasma species. Besides sika deer and cattle, wild brown bears and rodents were identified as potential reservoir hosts for AP-sd. This study provided a high throughput molecular method that specifically detects AP-sd, and which can be used to investigate its ecology and its potential as a threat to humans in Japan. Copyright © 2015 Elsevier B.V. All rights reserved.

  4. Mg II Line Variation of 32 Cygni

    Directory of Open Access Journals (Sweden)

    Young Woon Kang

    1992-12-01

    Full Text Available The Mg II lines have been extracted from the IUE archival spectra of 32 Cygni to investigate the effect of the atmospheric eclipse. The UV light curve has been reduced from the continuum flux at the center wavelength of 2807.5 Å in the IUE spectra. The equivalent width of the Mg II k absoption line has been measured for each spectra. The results of the light variation and flux tracing of the absorption line at the vicinity of the primary eclipse confirmed the atmospheric eclipse. The atmospheric effect lasted until the phase 0.06 in the absorptin line tracing, while it lasted until the phase 0.02 in the UV light curve, respectively.

  5. Randomized clinical trial of dexketoprofen/tramadol 25 mg/75 mg in moderate-to-severe pain after total hip arthroplasty.

    Science.gov (United States)

    McQuay, H J; Moore, R A; Berta, A; Gainutdinovs, O; Fülesdi, B; Porvaneckas, N; Petronis, S; Mitkovic, M; Bucsi, L; Samson, L; Zegunis, V; Ankin, M L; Bertolotti, M; Pizà-Vallespir, B; Cuadripani, S; Contini, M P; Nizzardo, A

    2016-02-01

    The aim was to evaluate the analgesic efficacy and safety of the dexketoprofen/tramadol 25 mg/75 mg fixed-dose combination vs dexketoprofen (25 mg) and tramadol (100 mg) in moderate-to-severe acute pain after total hip arthroplasty. This was a randomized, double-blind, parallel-group study in patients experiencing pain of at least moderate intensity on the day after surgery, compared with placebo at first administration to validate the pain model. The study drug was administered orally every 8 h throughout a 5 day period. Rescue medication, metamizole 500 mg, was available during the treatment period. The evaluation of efficacy was based on patient assessments of pain intensity and pain relief. The primary end point was the mean sum of the pain intensity difference values throughout the first 8 h (SPID8). Overall, 641 patients, mean age 62 (range 29-80) yr, were analysed; mean (sd) values of SPID8 were 247 (157) for dexketoprofen/tramadol, 209 (155) for dexketoprofen, 205 (146) for tramadol, and 151 (159) for placebo. The primary analysis confirmed the superiority of the combination over dexketoprofen 25 mg (P=0.019; 95% confidence interval 6.4-73) and tramadol 100 mg (P=0.012; 95% confidence interval 9.5-76). The single components were superior to placebo (P<0.05), confirming model sensitivity. Most secondary analyses supported the superiority of the combination. The incidence of adverse drug reactions was low and similar among active treatment groups. The efficacy results confirmed the superiority of dexketoprofen/tramadol over its single components, even at higher doses (tramadol), with a safety profile fully in line with that previously known for these agents in monotherapy. EudraCT 2012-004548-31 (https://www.clinicaltrialsregister.eu/ctr-search/search?query=eudract_number:2012-004548-31);ClinicalTrials.gov NCT01902134 (https://www.clinicaltrials.gov/ct2/show/NCT01902134?term=NCT01902134&rank=1). © The Author 2016. Published by Oxford University Press on

  6. High temperature mechanical forming of Mg alloys

    International Nuclear Information System (INIS)

    Mwembela, A.; McQueen, H.J.; Myshlyaev, M.

    2002-01-01

    Mg alloys are hot worked in the range 180-450 o C and 0.0-10 s -1 ; the present project data are compared with a wide selection of published results. The flow stresses and their dependence on temperature and strain rate are fairly similar to simple Al alloys: however, the hot ductility is much lower (≤3 in torsion). Twinning plays a significant role in Mg alloys almost independently of temperature; the twins initiate at low strains in grains poorly oriented for basal slip and in consequence become well disposed for such slip. As T rises, there is increasing formation of subgrains that spread toward the grain centers from grain and twin boundaries: this is indicative of stress concentrations inducing non-basal sup which helps provide the geometrically necessary dislocations. Above about 240 o C, dynamic (DRX) nucleates at grain and twin boundaries, preferentially at intersections; this again is evidence of non-basal slip that provides the highly misoriented cells. The boundaries in which further strain concentrates producing further DRX. The microstructure remains very heterogeneous compared to the uniform dynamically recovered substructure in Al alloys, thus giving rise to the reduced ductility. These results are employed to interpret the mechanical and microstructural behavior of Mg alloys in extrusion, rolling and forging. (author)

  7. Mg,Ca-ATPase activity under irradiation

    International Nuclear Information System (INIS)

    Ladutin, V.V.; Orlova, V.V.; Lob, P.A.; Gerasiminko, I.V.; Mack, E.I.

    2003-01-01

    Full text: The influence of different doses irradiation at the Mg,Ca-ATPase activity at the rat brain has been investigated. The analyses were made at the apparatus of LKB and Carl-Ceis-Jena firm with help of reagents of Sigma and Boehringer firm. Rats decapitated after 1, 3, 6, 24 and 48 h after action of irradiation. Dose 0.206 C/kg. Erythrocytes. 1 and 3h after irradiation influence- decrease of Mg,Ca-ATPase activity to 86-87% relatively control level, 24 and 48 h - increase of activity to the control level. Dose 0.312 C/kg. Large hemispheres. 1h - decrease of ATPase activity to 90% relatively control, 3h - increase to control level, 24h - fall to 86%, after 48h small increase to 93% relatively control. Dose 9.287 C/kg. Large hemispheres. 1h - sharp fall of Mg, Ca-ATPase activity to 67 % relatively control, increase of activity to 96% after 3h and sharp fall of activity to 64% 6h after action of irradiation. Dose 9.287 C/kg. Cerebellum. 1h - sharp decrease of ATPase activity to 80%. After 3h -sharp increase to 160% relatively control level and sharp fall of ATPase activity to 47% relatively control after 6h. The mechanism of radiation pathology of active ion transport has been discussed

  8. Interstitial Fe in MgO

    CERN Document Server

    Mølholt, T E; Gunnlaugsson, H P; Svane, A; Masenda, H; Naidoo, D; Bharuth-Ram, K; Fanciulli, M; Gislason, H P; Johnston, K; Langouche, G; Ólafsson, S; Sielemann, R; Weyer, G

    2014-01-01

    Isolated Fe-57 atoms were studied in MgO single-crystals by emission Mossbauer spectroscopy following implantation of Mn-57 decaying to Fe-57. Four Mossbauer spectral components were found corresponding to different Fe lattice positions and/or charge states. Two components represent Fe atoms substituting Mg as Fe2+ and Fe3+, respectively; a third component is due to Fe in a strongly implantation-induced disturbed region. The fourth component, which is the focus of this paper, can be assigned to Fe at an interstitial site. Comparison of its measured isomer shift with ab initio calculations suggests that the interstitial Fe is located on, or close to, the face of the rock-salt MgO structure. To harmonize such an assignment with the measured near-zero quadrupole interaction a local motion process (cage motion) of the Fe has to be stipulated. The relation of such a local motion as a starting point for long range diffusion is discussed.

  9. Usefulness of measurement of circulation time using MgSO4 : correlation with time-density curve using electron beam computed tomography

    International Nuclear Information System (INIS)

    Kim, Byung Ki; Lee, Hui Joong; Lee, Jong Min; Kim, Yong Joo; Kang, Duck Sik

    1999-01-01

    To determine the usefulness of MgSO 4 for measuring the systemic circulation time. Systemic circulation time, defined as elapsed time from the injection of MgSO 4 solution to the point of pharyngeal burning sensation, was measured in 63 volunteers. MgSO 4 was injected into a superficial vein of an upper extremity. Using dynamic electron beam computed tomography at the level of the abdominal aorta and celiac axis, a time-intensity curve was plotted, and for these two locations, maximal enhancement time was compared. For 60 of the 63 subjects, both systemic circulation time and maximal enhancement time were determined. Average systemic circulation time was 17.4 (SD:3.6) secs. and average maximal enhancement times at the level of the abdominal aorta and celiac axis were 17.5 (SD:3.0) secs. and 18.5 (SD:3.2) secs., respectively. Correlation coefficients between systemic circulation time and maximal enhancement time for the abdominal aorta and celiac axis were 0.73 (p 4 injection and maximal enhancement time for the abdominal aorta showed significant correlation. Thus, to determine the appropriate scanning time in contrast-enhanced radiological studies, MgSO 4 can be used instead of a test bolus study

  10. Electronic structure of ferromagnet-insulator interfaces: Fe/MgO and Co/MgO

    Energy Technology Data Exchange (ETDEWEB)

    Mueller, M.

    2007-07-11

    In this thesis the electronic structure of Fe/MgO{sub x} and Co/MgO{sub x} ferromagnet-insulator interfaces, representing material systems which are widely used in magnetic tunnel junctions, is studied by means of spin- and angle-resolved photoemission spectroscopy. The photoemission studies focus particularly on the response of the ferromagnetic electronic system in contact with MgO of varying stoichiometries, as this reflects the mechanisms of metal-oxide bonding at real ferromagnet-insulator interfaces. The correlation between chemical bonding and electronic structure formation is analyzed by combining information from core- and valence-band photoemission spectroscopy. The spectral features are compared to band structure calculations, which are performed using the SPR-KKR method. The Fe/MgO and Co/MgO systems are prepared by molecular beam epitaxy under ultrahigh vacuum conditions on well-defined (4 x 6) GaAs(001) substrates. A structural analysis by means of low-energy electron diffraction (LEED) reveals their body-centered cubic crystalline structure, whereas the chemical characterization by Auger electron spectroscopy is used to quantify the chemical environment at the sample surfaces. The magnetic analysis, using the magneto-optical Kerr effect, reveals the uniaxial anisotropy of the ferromagnetic layers. A crucial parameter is given by the MgO degree of oxidation, which is addressed by means of core-level spectroscopy and quantified by suitable fitting procedures of the Mg 2p core level. The results of the photoemission experiments show, that the electronic structure of the Fe/MgO and Co/MgO ferromagnet/insulator interfaces and, consequently, the interfacial spin polarization are sensitively controlled by the interface chemistry. In particular, three distinct scenarios are identified: the nearly stoichiometric, the oxygen-deficient and the over-oxidized ferromagnet/MgO interface. Each case is defined by innate characteristics of the electronic structure at

  11. Comparison of hydrogen storage properties of pure Mg and milled ...

    Indian Academy of Sciences (India)

    Administrator

    increase the hydriding and dehydriding rates, pure Mg was ground under hydrogen atmosphere (reactive .... Hydrogen storage properties of pure Mg and milled pure Mg. 833. Figure 3. ... elongated and flat shapes via collisions with the steel.

  12. The System Dynamics Model User Sustainability Explorer (SD-MUSE) user interface: a user-friendly tool for interpreting system dynamic models

    Science.gov (United States)

    Sustainability-based decision making is a challenging process that requires balancing trade-offs among social, economic, and environmental components. System Dynamic (SD) models can be useful tools to inform sustainability-based decision making because they provide a holistic co...

  13. Signal differential-to-noise ratio (SdNR) in the evaluation of radiography techniques for optimisation of the industrial computed radiography

    International Nuclear Information System (INIS)

    Saddock, Aline; Candeias, Janaina P.; Oliveira, Davi F.; Lopes, Ricardo T.

    2007-01-01

    The transition from analog to digital operation which the radiography has gone through, has provided new and important challenges in the way the images are acquired and displayed. There is several acquisition system of digital image, such as for example, the computerized system, which uses Image Plates (IP). This system was used in the accomplishment of this work with the aim to study a technique capable of optimizing the acquisition of digital image. A methodology for the evaluation of image quality is through the parameter signal differential-to- noise ratio (SdNR). However, in order to compare different radiographic techniques through this system it is also necessary to calculate the Figure of Merit (FOM) that in this in case, it is given by the square of the SdNR per unit of applied dose. The method proposed in this work is about the use of IP to carry out SdNR experimental measurements and consequently FOM measurements in applications of the x-ray of pieces in aluminum. This proceeding was performed varying some specific parameters of the system, as high voltage, exposition and the use of filters in the X-rays tube exit. As a result, an SdNR was obtained for each technique, allowing in this way, to verify the behavior of the FOM in each one of them. (author)

  14. LONG-TERM SD-OCT/SLO IMAGING OF NEURORETINA AND RETINAL PIGMENT EPITHELIUM AFTER SUB-THRESHOLD INFRARED LASER TREATMENT OF DRUSEN

    Science.gov (United States)

    MOJANA, FRANCESCA; BRAR, MANPREET; CHENG, LINGYUN; BARTSCH, DIRK-UWE G.; FREEMAN, WILLIAM R.

    2012-01-01

    PURPOSE To determine the long-term effect of sub-threshold diode laser treatment for drusen in patients with non-exudative age-related macular degeneration (AMD) with spectral domain optical coherence tomography combined with simultaneous scanning laser ophthalmoscope (SD-OCT/SLO). METHODS 8 eyes of 4 consecutive AMD patients with bilateral drusen previously treated with sub-threshold diode laser were imaged with SD-OCT/SLO. Abnormalities in the outer retina layers reflectivity as seen with SD-OCT/SLO were retrospectively analyzed and compared with color fundus pictures and autofluorescence images (AF) acquired immediately before and after the laser treatment. RESULTS A focal discrete disruptions in the reflectivity of the outer retinal layers was noted in 29% of the laser lesions. The junction in between the inner and outer segment of the photoreceptor was more frequently affected, with associated focal damage of the outer nuclear layer. Defects of the RPE were occasionally detected. These changes did not correspond to threshold burns on color fundus photography, but corresponded to focal areas of increased AF in the majority of the cases. CONCLUSIONS Sub-threshold diode laser treatment causes long-term disruption of the retinal photoreceptor layer as analyzed by SD-OCT/SLO. The concept that sub-threshold laser treatment can achieve a selected RPE effect without damage to rods and cones may be flawed. PMID:21157398

  15. Paper S12 5 : Self-aligned a-IGZO TFTs : Impact of S/D contacts formation on their Negative-Bias-Illumination-Stress (NBIS) instability

    NARCIS (Netherlands)

    Nag, M.; Steudel, S.; Smout, S.; Bhoolokam, A.; Genoe, J.; Cobb, B.; Kumar, A.; Groeseneken, G.; Heremans, P.

    2015-01-01

    In this work, we present the impact of S/D contact formation, that is, by SiN plasma doping (hydrogen incorporation), metallic reduction (by calcium) and by argon plasma (compositional change) on NBIS instabilities of self-aligned a-IGZO TFTs.

  16. SOLUȚIONAREA „CHESTIUNII ARMENEȘTI” DE CĂTRE GUBERNATORUL BASARABIEI S.D. URUSOV (1903-1904

    Directory of Open Access Journals (Sweden)

    Valentin ARAPU

    2017-08-01

    Full Text Available Gubernatorul Basarabiei S.D. Urusov a soluționat „chestiunea armenească” pe cale amiabilă. Armenii basarabeni au acceptat să cedeze statului rus o parte din bani și proprietăți, păstrându-și intacte privilegiile și statutul de odinioară. În Basarabia, spre deosebire de alte gubernii în care au existat tensiuni în acest sens, grație unei politici abile și tolerante, promovate față de armeni de către S.D. Urusov, procesul de expropriere parțială a comunității armenești s-a desfășurat calm și fără excese.SETTLEMENT OF THE „ARMENIAN ISSUE” BY THE GOVERNOR OF BESSARABIA S.D. URUSOV (1903-1904The governor of Bessarabia S.D. Urusov settled the „Armenian issue” in an amicable way. Armenians from Bessarabiaagreed to cede to Russian state some money and properties, in order to keep intact the privileges and status they held. In Bessarabia, unlike other gubernias, where there were tensions in this regard, thanks to skilful and tolerant policy, promoted by S.D. Urusov, the process of partial expropriation of the Armenian community was held calmly and without excesses.

  17. Functional and Morphological Evaluation of Traumatized Eyes With Berlin's Edema Affecting the Macula Using mfERG, Microperimetry, and SD-OCT.

    Science.gov (United States)

    Boss, Joseph Daniel; Tosi, Joaquin; Glybina, Inna; Tewari, Asheesh; Abrams, Gary W

    2017-02-01

    To describe the structural and functional changes that occur in traumatic Berlin's edema involving the macula through assessment with multifocal electroretinogram (mfERG), microperimetry, fundus photography, and spectral-domain optical coherence tomography (SD-OCT). Retrospective case series of five eyes from four patients with macular traumatic Berlin's edema. Patients underwent baseline mfERG (three eyes), MP1 microperimetry (three eyes), fundus photography (five eyes), and SD-OCT (five eyes). All eyes with Berlin's edema showed abnormal findings on baseline SD-OCT, including disruption and fragmentation of the inner segment/ outer segment layer. In two patients with unilateral blunt ocular trauma who underwent mfERG, there was complete loss of the foveal peak in affected eyes. All three eyes that underwent microperimetry showed depressed retinal sensitivity in the area of Berlin's edema. SD-OCT, microperimetry, and mfERG can be used to help diagnose, stratify traumatic severity, and follow structural and functional progression over time in patients with Berlin's edema. [Ophthalmic Surg Lasers Imaging Retina. 2017;48:114-121.]. Copyright 2017, SLACK Incorporated.

  18. Detailed Morphological Changes of Foveoschisis in Patient with X-Linked Retinoschisis Detected by SD-OCT and Adaptive Optics Fundus Camera

    Directory of Open Access Journals (Sweden)

    Keiichiro Akeo

    2015-01-01

    Full Text Available Purpose. To report the morphological and functional changes associated with a regression of foveoschisis in a patient with X-linked retinoschisis (XLRS. Methods. A 42-year-old man with XLRS underwent genetic analysis and detailed ophthalmic examinations. Functional assessments included best-corrected visual acuity (BCVA, full-field electroretinograms (ERGs, and multifocal ERGs (mfERGs. Morphological assessments included fundus photography, spectral-domain optical coherence tomography (SD-OCT, and adaptive optics (AO fundus imaging. After the baseline clinical data were obtained, topical dorzolamide was applied to the patient. The patient was followed for 24 months. Results. A reported RS1 gene mutation was found (P203L in the patient. At the baseline, his decimal BCVA was 0.15 in the right and 0.3 in the left eye. Fundus photographs showed bilateral spoke wheel-appearing maculopathy. SD-OCT confirmed the foveoschisis in the left eye. The AO images of the left eye showed spoke wheel retinal folds, and the folds were thinner than those in fundus photographs. During the follow-up period, the foveal thickness in the SD-OCT images and the number of retinal folds in the AO images were reduced. Conclusions. We have presented the detailed morphological changes of foveoschisis in a patient with XLRS detected by SD-OCT and AO fundus camera. However, the findings do not indicate whether the changes were influenced by topical dorzolamide or the natural history.

  19. Discharge behaviour of Mg-Al-Pb and Mg-Al-Pb-In alloys as anodes for Mg-air battery

    International Nuclear Information System (INIS)

    Wang, Naiguang; Wang, Richu; Peng, Chaoqun; Peng, Bing; Feng, Yan; Hu, Chengwang

    2014-01-01

    Highlights: • We investigate the effect of indium on the discharge behaviour of Mg-Al-Pb alloy. • We evaluate the performance of Mg-air batteries with Mg-Al-Pb and Mg-Al-Pb-In anodes. • We analyze the activation mechanism of Mg-Al-Pb-In alloy in the discharge process. - Abstract: The discharge behaviour of Mg-Al-Pb and Mg-Al-Pb-In alloys in 3.5 wt.% NaCl solution is investigated by electrochemical techniques, and compared with that of pure magnesium. The results show that Mg-Al-Pb-In alloy provides a more negative potential and exhibits a higher utilization efficiency in contrast with Mg-Al-Pb alloy and pure magnesium during the half-cell test at a large current density, and gives desirable discharge performance when used as anode for Mg- air battery. The peak power density of the Mg-air battery with Mg-Al-Pb-In anode is 94.5 mW cm −2 , which is comparable with those of Mg-H 2 O 2 semi-fuel batteries. Moreover, the activation mechanism of Mg-Al-Pb-In alloy during the discharge process is also analyzed

  20. Proton resonance elastic scattering of $^{30}$Mg for single particle structure of $^{31}$Mg

    CERN Multimedia

    The single particle structure of $^{31}$Mg, which is located in the so-called “island of inversion”, will be studied through measuring Isobaric Analog Resonances (IARs) of bound states of $^{31}$Mg. They are located in the high excitation energy of $^{31}$Al. We are going to determine the spectroscopic factors and angular momenta of the parent states by measuring the excitation function of the proton resonance elastic scattering around 0 degrees in the laboratory frame with around 3 MeV/nucleon $^{30}$Mg beam. The present study will reveal the shell evolution around $^{32}$Mg. In addition, the spectroscopic factor of the (7/2)$^{−}$ state which was not yet determined experimentally, may allow one to study the shape coexistence in this nucleus.

  1. Applications of thermodynamic calculations to Mg alloy design: Mg-Sn based alloy development

    International Nuclear Information System (INIS)

    Jung, In-Ho; Park, Woo-Jin; Ahn, Sang Ho; Kang, Dae Hoon; Kim, Nack J.

    2007-01-01

    Recently an Mg-Sn based alloy system has been investigated actively in order to develop new magnesium alloys which have a stable structure and good mechanical properties at high temperatures. Thermodynamic modeling of the Mg-Al-Mn-Sb-Si-Sn-Zn system was performed based on available thermodynamic, phase equilibria and phase diagram data. Using the optimized database, the phase relationships of the Mg-Sn-Al-Zn alloys with additions of Si and Sb were calculated and compared with their experimental microstructures. It is shown that the calculated results are in good agreement with experimental microstructures, which proves the applicability of thermodynamic calculations for new Mg alloy design. All calculations were performed using FactSage thermochemical software. (orig.)

  2. Green emission from ZnO–MgO nanocomposite due to Mg diffusion at the interface

    International Nuclear Information System (INIS)

    Sowri Babu, K.; Ramachandra Reddy, A.; Venugopal Reddy, K.

    2015-01-01

    The origin and electronic transitions responsible for green emission observed from ZnO–MgO nanocomposite are investigated. The photoluminescence (PL) spectrum of ZnO–MgO nanocomposite annealed at 600 °C showed only a sharp and intense UV emission peak centered at 396 nm. As the annealing temperature increased from 600 °C to 1000 °C, the green emission positioned at 503 nm is emerged and its intensity enhanced gradually and reached maximum value at 900 °C and then decreased at 1000 °C. It is observed that both UV and green emission intensities are enhanced with variation of atomic ratio (Zn/Mg=1.52, 0.50, 0.30, 0.21, 0.15). Our experiments confirmed that the enhancement of green emission intensity is due to the formation of oxygen vacancies (V o ) due to Mg doping at the interface of ZnO and MgO. This experimental observation is in good agreement with the recent theoretical predictions which states that Mg doping in ZnO lowers the formation energies of oxygen vacancies (V o ) and zinc interstitials (Zn i ) significantly. PL excitation and emission spectra analysis reveals that excited state for both UV and green emissions is same and lies 0.24 eV below the conduction band of ZnO. Hence, the green emission is attributed to the transition of an electron form the shallow donor (defect level of Zn i ) to the deep acceptor (defect level of V o ). - Highlights: • It is found that the UV emission intensity from ZnO–MgO nanocomposite enhanced with increase of Mg concentration. • The intensity of the green emission is enhanced gradually as the temperature increased from 600 °C to 900 °C and then decreased at 1000 °C. • The effect of Mg concentration, MgO, strain at the interface on green emission is investigated. • These experiments confirmed that green emission is due to the oxygen vacancies created in ZnO due to the Mg doping at the interface and it is in good agreement with the theoretical predictions. • The decrease of green emission intensity is

  3. Corrosion analysis of AlMg2 and AlMgSi using electrochemical method

    International Nuclear Information System (INIS)

    Dian A; Maman Kartaman; Rosika K; Yanlinastuti

    2014-01-01

    Corrosion test of cladding materials and structures of research reactor fuel, AlMgSi and AlMg2 have been performed in demineralized water of pH 2 and 6.7 using an electrochemical method. Corrosion phenomenon is affected by several factor such as composition and condition of solution. The purpose of this activity is to investigate the corrosion phenomena through the determination of the parameters of corrosion and polarization curve. The materials used are AlMg2 and AlMgSi alloy in circular dish shape with an area of 1 Cm"2. Preparation of the test sample is performed through several stages polishing, cleaning and drying procedures followed ASTM G3. The electrochemical method is done by measuring the open circuit potential (OCP), polarization resistance and potentiodynamic in demineralized water of pH 2 and pH 6.7 at temperature of 25°C. The results of the OCP is the corrosion potential (Ecorr) of AlMg2 and AlMgSi each of -906.1 mV and -619.8 mV at pH 2 and -868.6 and -756.7 mV at pH 6.7 mV. The results of measurements by polarization resistance technique showed that the corrosion rate of AlMg2 and AlMgSi in safe category (<2 mpy) at pH 6.7 and at pH 2 corrosion rate increased significantly, but still in the lightweight category (<20 mpy). Potentiodynamic curves showed that the passivation at pH 6.7 is very low while the passivation at pH 2 occurs within a relatively short range potential and followed events corroded. (author)

  4. Automated geographic atrophy segmentation for SD-OCT images using region-based C-V model via local similarity factor.

    Science.gov (United States)

    Niu, Sijie; de Sisternes, Luis; Chen, Qiang; Leng, Theodore; Rubin, Daniel L

    2016-02-01

    Age-related macular degeneration (AMD) is the leading cause of blindness among elderly individuals. Geographic atrophy (GA) is a phenotypic manifestation of the advanced stages of non-exudative AMD. Determination of GA extent in SD-OCT scans allows the quantification of GA-related features, such as radius or area, which could be of important value to monitor AMD progression and possibly identify regions of future GA involvement. The purpose of this work is to develop an automated algorithm to segment GA regions in SD-OCT images. An en face GA fundus image is generated by averaging the axial intensity within an automatically detected sub-volume of the three dimensional SD-OCT data, where an initial coarse GA region is estimated by an iterative threshold segmentation method and an intensity profile set, and subsequently refined by a region-based Chan-Vese model with a local similarity factor. Two image data sets, consisting on 55 SD-OCT scans from twelve eyes in eight patients with GA and 56 SD-OCT scans from 56 eyes in 56 patients with GA, respectively, were utilized to quantitatively evaluate the automated segmentation algorithm. We compared results obtained by the proposed algorithm, manual segmentation by graders, a previously proposed method, and experimental commercial software. When compared to a manually determined gold standard, our algorithm presented a mean overlap ratio (OR) of 81.86% and 70% for the first and second data sets, respectively, while the previously proposed method OR was 72.60% and 65.88% for the first and second data sets, respectively, and the experimental commercial software OR was 62.40% for the second data set.

  5. A study on preparation and hydriding of β-Mg2Al3 and γ-Mg17Al12

    International Nuclear Information System (INIS)

    Hadi Suwarno

    2009-01-01

    The mechanism of the synthetic formation of β-Mg 2 Al 3 and γ-Mg 17 Al 12 has been studied. Mechanical alloying of Mg and Al powders with the atomic ratio of Mg:Al = 2:3 in toluene solution yields β-Mg 2 Al 3 compound after milling for 30 h. The γ-Mg 17 Al 12 can be formed by heating the β-Mg 2 Al 3 at 430°C under high vacuum. The measured hydrogen capacities of β-Mg 2 Al 3 and γ-Mg 17 Al 12 as hydride at 300°C are 3.2 and 4.9 wt%, respectively. Microstructure of the Mg-Al specimen shows that on hydriding at 300°C the polygonal shape of the γ-Mg 17 Al 12 changes into irregular shapes which are composed of γ-MgH 2 and Al. (author)

  6. Hydrogen absorption kinetics and structural properties of Mg85Ni10Ca5 and Mg90Ni10

    International Nuclear Information System (INIS)

    Aoki, Masakazu; Saito, Katsushi; Towata, Shin-ichi

    2005-01-01

    Mg 85 Ni 10 Ca 5 and Mg 90 Ni 10 were prepared by melting mixtures of the elements in mild steel crucibles and pouring them into copper molds. Hydrogen absorption kinetics and structural properties of the alloys were characterized by the volumetric method using a Sievert's apparatus, X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystallite size of Mg in Mg 85 Ni 10 Ca 5 , which is evaluated by XRD peak broadening, is about 50% smaller than that in Mg 90 Ni 10 . In addition, the nanometer-scale structure composed of Mg, Mg 2 Ni, Mg 2 Ca was observed in Mg 85 Ni 10 Ca 5 . Mg 85 Ni 10 Ca 5 shows better hydrogen absorption kinetics than Mg 90 Ni 10 in the temperature range of room temperature to 573 K. The better absorption kinetics of Mg 85 Ni 10 Ca 5 is mainly attributed to the nanometer-scale structure

  7. Reconstructive structural phase transitions in dense Mg

    International Nuclear Information System (INIS)

    Yao Yansun; Klug, Dennis D

    2012-01-01

    The question raised recently about whether the high-pressure phase transitions of Mg follow a hexagonal close-packed (hcp) → body centered cubic (bcc) or hcp → double hexagonal close-packed (dhcp) → bcc sequence at room temperature is examined by the use of first principles density functional methods. Enthalpy calculations show that the bcc structure replaces the hcp structure to become the most stable structure near 48 GPa, whereas the dhcp structure is never the most stable structure in the pressure range of interest. The characterized phase-transition mechanisms indicate that the hcp → dhcp transition is also associated with a higher enthalpy barrier. At room temperature, the structural sequence hcp → bcc is therefore more energetically favorable for Mg. The same conclusion is also reached from the simulations of the phase transitions using metadynamics methods. At room temperature, the metadynamics simulations predict the onset of a hcp → bcc transition at 40 GPa and the transition becomes more prominent upon further compression. At high temperatures, the metadynamics simulations reveal a structural fluctuation among the hcp, dhcp, and bcc structures at 15 GPa. With increasing pressure, the structural evolution at high temperatures becomes more unambiguous and eventually settles to a bcc structure once sufficient pressure is applied. (paper)

  8. Universal Unitarity Triangle 2016 and the tension between ΔM{sub s,d} and ε{sub K} in CMFV models

    Energy Technology Data Exchange (ETDEWEB)

    Blanke, Monika [Karlsruhe Institute of Technology, Institut fur Kernphysik, Eggenstein-Leopoldshafen (Germany); Karlsruhe Institute of Technology, Institut fur Theoretische Teilchenphysik, Karlsruhe (Germany); Buras, Andrzej J. [TUM-IAS, Garching (Germany); TUM, Physik Department, Garching (Germany)

    2016-04-15

    Motivated by the recently improved results from the Fermilab Lattice and MILC Collaborations on the hadronic matrix elements entering ΔM{sub s,d} in B{sup 0}{sub s,d}- anti B{sup 0}{sub s,d} mixing, we determine the universal unitarity triangle (UUT) in models with constrained minimal flavour violation (CMFV). Of particular importance are the very precise determinations of the ratio vertical stroke V{sub ub} vertical stroke / vertical stroke V{sub cb} vertical stroke = 0.0864 ± 0.0025 and of the angle γ = (62.7 ± 2.1) {sup circle}. They follow in this framework from the experimental values of ΔM{sub d}/ΔM{sub s} and of the CP-asymmetry S{sub ψK{sub S}}. As in CMFV models the new contributions to meson mixings can be described by a single flavour-universal variable S(v), we next determine the CKM matrix elements vertical stroke V{sub ts} vertical stroke, vertical stroke V{sub td} vertical stroke, vertical stroke V{sub cb} vertical stroke and vertical stroke V{sub ub} vertical stroke as functions of S(v) using the experimental value of ΔM{sub s} as input. The lower bound on S(v) in these models, derived by us in 2006, implies then upper bounds on these four CKM elements and on the CP-violating parameter ε{sub K}, which turns out to be significantly below its experimental value. This strategy avoids the use of tree-level determinations of vertical stroke V{sub ub} vertical stroke and vertical stroke V{sub cb} vertical stroke, which are presently subject to considerable uncertainties. On the other hand, if ε{sub K} is used instead of ΔM{sub s} as input, ΔM{sub s,d} are found to be significantly above the data. In this manner we point out that the new lattice data have significantly sharpened the tension between ΔM{sub s,d} and ε{sub K} within the CMFV framework. This implies the presence of new physics contributions beyond this framework that are responsible for the breakdown of the flavour universality of the function S(v). We also present the

  9. Phase formation in Mg-Sn-Si and Mg-Sn-Si-Ca alloys

    Energy Technology Data Exchange (ETDEWEB)

    Kozlov, A.; Groebner, J. [Institute of Metallurgy, Clausthal University of Technology, Robert-Koch-Str. 42, D-38678 Clausthal-Zellerfeld (Germany); Schmid-Fetzer, R., E-mail: schmid-fetzer@tu-clausthal.de [Institute of Metallurgy, Clausthal University of Technology, Robert-Koch-Str. 42, D-38678 Clausthal-Zellerfeld (Germany)

    2011-02-17

    Research highlights: > The solidification paths of ternary and quaternary alloys are analyzed in detail, using the tool of thermodynamic calculations. > The precipitation sequence of phases and their amounts compare well with the microstructure of alloys. > The most efficient comparison to the experimental thermal analysis data is done by calculation of the enthalpy variation with temperature. > The viability of a procedure for the selection of multicomponent key samples is demonstrated for the development of the Mg-Ca-Si-Sn phase diagram. - Abstract: Experimental work is done and combined with the Calphad method to generate a consistent thermodynamic description of the Mg-Ca-Si-Sn quaternary system, validated for Mg-rich alloys. The viability of a procedure for the selection of multicomponent key samples is demonstrated for this multicomponent system. Dedicated thermal analysis with DTA/DSC on sealed samples is performed and the microstructure of slowly solidified alloys is analyzed using SEM/EDX. The thermodynamic description and phase diagram of the ternary Mg-Si-Sn system, developed in detail also in this work, deviates significantly from a previous literature proposal. The phase formation in ternary and quaternary alloys is analyzed using the tool of thermodynamic equilibrium and Scheil calculations for the solidification paths and compared with present experimental data. The significant ternary/quaternary solid solubilities of pertinent intermetallic phases are quantitatively introduced in the quaternary Mg-Ca-Si-Sn phase diagram and validated by experimental data.

  10. Spin-isospin excitation in sd-shell nuclei studied by the (d,2He) reaction at Ed=270MeV

    International Nuclear Information System (INIS)

    Niizeki, T.; Ohnuma, H.; Yamamoto, T.; Katoh, K.; Yamashita, T.; Hara, Y.; Okamura, H.; Sakai, H.; Ishida, S.; Sakamoto, N.; Otsu, H.; Wakasa, T.; Uesaka, T.; Satou, Y.; Fujita, T.; Ichihara, T.; Orihara, H.; Toyokawa, H.; Hatanaka, K.; Kato, S.; Kubono, S.; Yosoi, M.

    1994-01-01

    The (d, 2 He) reactions on 24 Mg, 26 Mg and 28 Si were studied at E d =270MeV. The 0 cross sections obtained for the 1 + states from the 24 Mg, 28 Si(d, 2 He) reactions show a good correlation with those from the mirror (p,n) reactions. Four peaks were identified in the 26 Mg(d, 2 He) 26 Ne reaction as being due to the 1 + excitation. The B(GT + ) values for these transitions were estimated and compared with the shell model prediction. ((orig.))

  11. Half-life determination for 27Mg

    Science.gov (United States)

    Zahn, G. S.; Genezini, F. A.

    2015-07-01

    In this work, the half-life of the short-lived magnesium radionuclide 27Mg was measured by following the activity of samples after they were irradiated in the IEA-R1 reactor. An exponential decay function was then fitted to the results using the counts from a 60Co source as livetime chronometer; the individual half-life values obtained for each irradiation were compiled using both the usual unweighted and σ-2-weighted averages, as well as the robust averages obtained using the Normalized Residuals and the Rajeval techniques. The final halflive values obtained aren't compatible with the ENSDF compilation values, but have a similar uncertainty; analysis of the experimental literature values, all from the 50’s-60’s, show that further measurements should be undertaken in order to achieve a more robust consensus value for this half-life.

  12. Experimental lifetimes for Mg-like chlorine

    International Nuclear Information System (INIS)

    Engstroem, L.; Bengtsson, P.; Jupen, C.; Livingston, A.E.; Martinson, I.

    1995-01-01

    The results of beam-foil measurements of lifetimes for low-lying singlet levels in Mg-like chlorine, Cl VI, are presented. The decay curves were analyzed by means of the arbitrarily normalized decay curve method, combined with the recently developed CANYL code, which facilitates studies of decay chains. Cascade corrected data are presented for the levels 3s3p 1 P, 3p 2 1 S, 3p 2 1 D, and 3s3d 1 D, whereas less rigorous lifetime values, based on curve fits, were obtained for the 3p3d 1 D, 3p3d 1 F, and 3s4f 1 F levels. The data are in excellent agreement with recent theoretical values, and previous discrepancies between experiment and theory for short-lived states have been removed

  13. MgO by injection CVD

    International Nuclear Information System (INIS)

    Abrutis, A.; Kubilius, V.; Teiserkis, A.; Bigelyte, V.; Vengalis, B.; Jukna, A.; Butkute, R.

    1997-01-01

    Epitaxial YBa 2 Cu 3 O 7 layers with 45 in-plane orientation have been grown by injection CVD on MgO substrates polished off-axis to within 1.4-1.9 of the [100] direction. This new single-source CVD process is based on computer-controlled injection of precise microdoses of a metal-organic precursor solution into a CVD reactor. A wide range of solution compositions was tested to investigate compositional effects on phase purity, surface morphology, texturing and superconducting properties of the prepared films. The highest quality films with pure 45 texture had a smooth surface, zero resistance T c (R=0) of 88-89 K, and critical current density J c (77 K) above 10 6 A/cm 2 . (orig.) and critical current density J c (77 K) above 10 6 A/cm 2 . (orig.)

  14. Mg amorphous alloys for biodegradable implants

    International Nuclear Information System (INIS)

    Danez, G.P.; Koga, G.Y.; Tonucci, S.; Bolfarini, C.; Kiminami, C.S.; Botta Filho, W.J.

    2010-01-01

    The use of implants made from amorphous alloys magnesium-based with additions of zinc and calcium are promising. Properties such as biocompatibility, low density, high mechanical strength, low modulus (as compared to alloys such as stainless steel and titanium), corrosion resistance and wear resistance make it attractive for use in implants. Moreover, the by-products of corrosion and wear are not toxic and may contribute to fixation. Aiming to understand the tendency of this amorphous ternary (Mg-Zn-Ca) and expand the information about this system, this work involved the use of the topological criterion of instability (λ) and the criterion of electronegativity (Δe) to the choice of compositions. The alloys were processed into wedge-shaped and analyzed structurally and in X-ray diffraction and scanning electron microscopy. (author)

  15. Estabilidad de tabletas de Rifampicina 300 mg

    Directory of Open Access Journals (Sweden)

    Lisette Martínez Miranda

    2001-04-01

    Full Text Available Se realizó el estudio de estabilidad de las tabletas de rifampicina 300 mg. Se utilizó para la cuantificación del principio activo un método analítico desarrollado y validado por cromatografía líquida de alta resolución en fase reversa y detección ultravioleta. El estudio de estabilidad de las tabletas se efectuó mediante los métodos de vida útil y acelerado en condiciones isotérmicas; no se obtuvo una variación notable de la concentración en el tiempo de estudio y se demostró así la estabilidad química y térmica del principio activo, por lo que se proponen 2 años como fecha de vencimiento. La humedad relativa de 75, 84 y 92 % tuvo influencia en la estabilidad de la formulación en el período analizado.The stability study of rifampicin 300 mg was conducted. An analytical method developed and validated by high pressure liquid chromatography in reverse phase and ultraviolet detection was used for the quantification of the actives principle. The stability study of the tablets was conducted by the method of useful life and the accelerated method under isothermic conditions. There was no significant variation of the concentration during the time of study and, thus, the chemical and thermal stability of the active principle was proved. A period of 2 years was proposed as expiration date. A relative humidity of 75, 84 and 92% influenced on the stability of the formulation in the analyzed period.

  16. Hydriding and dehydriding rates of Mg, Mg-10TaF5, and Mg-10NbF5 prepared via reactive mechanical grinding

    Science.gov (United States)

    Song, Myoung Youp; Kwak, Young Jun; Lee, Seong Ho; Park, Hye Ryoung

    2015-01-01

    In this work, TaF5 and NbF5 were chosen as additives to enhance the hydriding and dehydriding rates of Mg. Mg, Mg-10TaF5, and Mg-10NbF5 samples were prepared by reactive mechanical grinding. The hydriding and dehydriding properties of the samples were then examined. Mg-10TaF5 had the largest amount of hydrogen absorbed for 30 min and the highest initial dehydriding rate after incubation period, followed in order by Mg-10NbF5, and Mg. At 593 K under 12 bar H2 at the first cycle, Mg-10TaF5 absorbed 3.63 wt% H for 5 min and 4.53 wt% H for 30 min. At 593 K under 1.0 bar H2 at the first cycle, Mg-10TaF5 desorbed 0 wt% H for 2.5 min, 0.59 wt% H for 5 min, 3.42 wt% H for 30 min, and 4.24 wt% H for 60 min. The reactive mechanical grinding of Mg with TaF5 or NbF5 is believed to have facilitated the nucleation and to have decreased the diffusion distances of hydrogen atoms. These two effects are believed to have increased the hydriding and dehydriding rates of Mg. The MgF2 and Ta2H formed in Mg-10TaF5, and the MgF2, NbH2, and NbF3 formed in Mg-10NbF5 are considered to have enhanced both of these effects.

  17. Prevalence of gastroduodenal ulcers/erosions in patients taking low-dose aspirin with either 15 mg/day of lansoprazole or 40 mg/day of famotidine: The OITA-GF study 2

    Science.gov (United States)

    2013-01-01

    Background The preventive effects of histamine 2 receptor antagonists vs. proton pump inhibitors on low-dose aspirin (LDA)-related gastroduodenal mucosal injury have not been fully investigated. We conducted a cross-sectional study to compare the prevalence of gastroduodenal ulcers or erosions in patients taking LDA with either 40 mg/day of famotidine or 15 mg/day of lansoprazole for at least three months. Methods Of 84 eligible patients, two taking 40 mg/day of famotidine and four taking 15 mg/day of lansoprazole refused to undergo upper gastrointestinal endoscopy. Ultimately, we performed upper gastrointestinal endoscopy in 78 patients taking either 40 mg/day of famotidine (group F, n = 31) or 15 mg/day of lansoprazole (group L, n = 47). The prevalence of gastroduodenal ulcers or erosions and the magnitude of gastric mucosal injury evaluated using modified Lanza scores were compared between the two groups. Results No patients in either group had gastroduodenal ulcers. Gastroduodenal erosions were more prevalent in group F than in group L (48.4% vs. 17.0%, p = 0.005). The modified Lanza scores (mean ± SD) were significantly higher in group F than in group L (0.9 ± 1.3 vs. 0.3 ± 0.7, p = 0.007). A multivariate logistic regression analysis showed that the use of lansoprazole was negatively associated with gastroduodenal erosions. Conclusions This study suggests that 15 mg/day of lansoprazole may be more effective in preventing the development of LDA-related gastroduodenal erosions than 40 mg/day of famotidine. The preventive effects of these two regimens on the development of LDA-related gastroduodenal ulcers require further investigation. PMID:23531145

  18. Prevalence of gastroduodenal ulcers/erosions in patients taking low-dose aspirin with either 15 mg/day of lansoprazole or 40 mg/day of famotidine: the OITA-GF study 2.

    Science.gov (United States)

    Tamura, Akira; Murakami, Kazunari; Kadota, Junichi

    2013-03-26

    The preventive effects of histamine 2 receptor antagonists vs. proton pump inhibitors on low-dose aspirin (LDA)-related gastroduodenal mucosal injury have not been fully investigated. We conducted a cross-sectional study to compare the prevalence of gastroduodenal ulcers or erosions in patients taking LDA with either 40 mg/day of famotidine or 15 mg/day of lansoprazole for at least three months. Of 84 eligible patients, two taking 40 mg/day of famotidine and four taking 15 mg/day of lansoprazole refused to undergo upper gastrointestinal endoscopy. Ultimately, we performed upper gastrointestinal endoscopy in 78 patients taking either 40 mg/day of famotidine (group F, n = 31) or 15 mg/day of lansoprazole (group L, n = 47). The prevalence of gastroduodenal ulcers or erosions and the magnitude of gastric mucosal injury evaluated using modified Lanza scores were compared between the two groups. No patients in either group had gastroduodenal ulcers. Gastroduodenal erosions were more prevalent in group F than in group L (48.4% vs. 17.0%, p = 0.005). The modified Lanza scores (mean ± SD) were significantly higher in group F than in group L (0.9 ± 1.3 vs. 0.3 ± 0.7, p = 0.007). A multivariate logistic regression analysis showed that the use of lansoprazole was negatively associated with gastroduodenal erosions. This study suggests that 15 mg/day of lansoprazole may be more effective in preventing the development of LDA-related gastroduodenal erosions than 40 mg/day of famotidine. The preventive effects of these two regimens on the development of LDA-related gastroduodenal ulcers require further investigation.

  19. Mechanochemical Synthesis of Nanostructured MgXNi1-XO Compound by Mg-NiO Mixture

    Directory of Open Access Journals (Sweden)

    Nader Setoudeh

    2017-06-01

    Full Text Available Synthesis of magnesium nickel oxide phase such as MgxNi1-xO solid solutions has been studied in this research article using mechnochmical reaction between magnesium and nickel oxide. Mixtures of magnesium powder and nickel oxide (Mg+NiO with stoichiometric compositions were milled for different times in a planetary ball mill. Reduction reaction of nickel oxide by magnesium via a mechanically induced self-sustaining reaction (MSR was confirmed in the XRD measurements of the as-milled samples. Formation of nanostructured magnesium nickel oxide phases (such as Mg0.4Ni0.6O or MgNiO2 was observed after isothermal heating of the 30 minutes milled samples at 1000°C where nickel phase seems to disappear in XRD patterns. The traces of phases such as Mg0.4Ni0.6O or MgNiO2 were also observed in the as-milled mixtures. Therefore, the XRD results of the as-milled samples suggested that the formation of magnesium nickel oxide phases could be possible even after prolonged milling. The XRD and SEM results of both as-milled and isothermally heated samples indicated that the crystallite size and particle size of the final products reached to nanoscale after milling. Morphological and compositional evolution of the samples after heat treatment was monitored through SEM imaging and elemental analyses. The results confirmed that the composition of final product is close to Mg0.4Ni0.6O compound.

  20. Porous composite materials ZrO2(MgO)-MgO for osteoimplantology

    International Nuclear Information System (INIS)

    Buyakov, Ales; Litvinova, Larisa; Shupletsova, Valeria; Kulbakin, Denis; Kulkov, Sergey

    2016-01-01

    The pore structure and phase composition of ceramic composite material ZrO 2 (Mg)-MgO at different sintering temperatures were studied. The main mechanical characteristics of the material were determined and it was shown that they are close to the characteristics of natural bone tissues. It was shown that material structure has a positive effect on the pre-osteoblast cells proliferation. In-vitro studies of pre-osteoblast cells, cultivation on material surface showed a good cell adhesion, proliferation and differentiation of MMSC by osteogenic type.

  1. Sorption of selenium on Mg-Al and Mg-Al-Eu layered double hydroxides

    International Nuclear Information System (INIS)

    Curtius, H.; Paparigas, Z.; Kaiser, G.

    2008-01-01

    Salt domes represent deep geological formations which are under consideration as final repositories for irradiated research reactor fuel elements. For long-term safety aspects the mobilisation of the radionuclides due to a water ingress is intensively investigated. At the Institute of Energy Research (IEF-6), leaching experiments were performed in a hot cell facility with UAl x -Al and U 3 Si 2 -Al dispersed research reactor fuel elements in repository-relevant MgCl 2 -rich salt brines under anaerobic conditions. The fuel plates corroded completely within one year and a Mg-Al-layered double hydroxide (LDH) with chloride as interlayer anion was identified as one crystalline phase component of the corrosion products (secondary phases). This Mg-Al-LDH was synthesized, characterized, and the ability to retard europium by an incorporation process was investigated. Europium, as a representative for lanthanides, was identified to be one of the radionuclides which were found in the corrosion products. We could show that europium was incorporated in the lattice structure. LDHs have high anion exchange capacities that enhance their potential to remove anionic contaminants from aqueous systems. In this work the sorption behaviour of selenium in the chemical form as selenite (SeO 3 2- ) on Mg-Al-LDH and on Mg-Al-Eu-LDH was investigated. Especially the influence of the larger europium-III ion was of interest. It represents in the Mg-Al-Eu-LDH about 10% of the molar aluminium amount. The sorption has been experimentally studied in a wide range of pH, ionic strength, radionuclide and sorbent concentration. Both LDHs with chloride as interlayer anion were synthesized by a coprecipitation method under controlled conditions, and their main physico-chemical properties were analyzed prior to the sorption experiments. The sorption kinetics of selenite on the LDHs in water and in MgCl 2 -rich brine were rapid using a LDH concentration of 10 g/L. Equilibrium, indicated by stable p

  2. Porous composite materials ZrO{sub 2}(MgO)-MgO for osteoimplantology

    Energy Technology Data Exchange (ETDEWEB)

    Buyakov, Ales, E-mail: alesbuyakov@gmail.com [Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 (Russian Federation); National Research Tomsk State University, Tomsk, 634050 (Russian Federation); Litvinova, Larisa, E-mail: larisalitvinova@yandex.ru; Shupletsova, Valeria, E-mail: vshupletsova@mail.ru [Immanuel Kant Baltic Federal University, Kaliningrad (Russian Federation); Kulbakin, Denis, E-mail: kulbakin2012@gmail.com [Tomsk Cancer Research Institute, Tomsk, 634050 (Russian Federation); Kulkov, Sergey, E-mail: kulkov@ispms.ru [Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 (Russian Federation); National Research Tomsk State University, Tomsk, 634050 (Russian Federation); National Research Tomsk Polytechnic University, Tomsk, 634050 (Russian Federation)

    2016-08-02

    The pore structure and phase composition of ceramic composite material ZrO{sub 2}(Mg)-MgO at different sintering temperatures were studied. The main mechanical characteristics of the material were determined and it was shown that they are close to the characteristics of natural bone tissues. It was shown that material structure has a positive effect on the pre-osteoblast cells proliferation. In-vitro studies of pre-osteoblast cells, cultivation on material surface showed a good cell adhesion, proliferation and differentiation of MMSC by osteogenic type.

  3. DARPA Antibody Technology Program Standardized Test Bed for Antibody Characterization: Characterization of an MS2 sdAb Produced by U.S. Naval Research Laboratory

    Science.gov (United States)

    2016-10-01

    depict a sigmoidal curve, which is indicative of a valid size distribution. The regularization graphs (Figures 2B and 3B) illustrate the...Figure 1) was typical for an sdAb. DLS was used in conjunction with the Experion and NanoDrop systems to illustrate how the protein behaved in...DISTRIBUTION LIST The following individuals and organizations were provided with one Adobe portable document format (pdf) electronic version of this

  4. Validity of the M-3Y force equivalent G-matrix element for the calculations of nuclear structure in the s-d shell

    International Nuclear Information System (INIS)

    Song Hong-qiu; Wang Zixing; Cai Yanhuang; Huang Weizhi

    1987-01-01

    The matrix elements of the M-3Y force are adopted as the equivalent G-matrix elements and the folded diagram method is used to calculate the spectra of 18 O and 18 F. The results show that the matrix elements of the M-3Y force as the equivalent G-matrix elements are suitable for microscopic calculations of the nuclei in the s-d shell

  5. Role of dopants in LiF:Mg,Cu, LiF:Mg,P and LiF:Mg,Cu,P detectors

    International Nuclear Information System (INIS)

    Mohammadi, Kh.; Moussavi Zarandi, A.; Afarideh, H.; Shahmaleki, S.

    2013-01-01

    In this study, electronic structure of LiF crystal doped with Mg,Cu,P impurities was studied with WIEN2k code on the basis of FPLAPW+lo method. Results show that in Mg-doped LiF composition, an electronic trap was created with impurity concentration of 1.56% and 3.125%. In this condition, the electronic trap with increasing the percentage of the impurities up to 4.687% is annihilated. It was found, that by doping of Mg and Cu or P simultaneously, a hole-trap is created in valence band. It was realized that in LiF:Mg,Cu, LiF:Mg,P and LiF:Mg,Cu,P, Cu impurity and Li atom, have a key role in creation of levels which lead to create electronic and hole traps. Mg impurity and F atom, only have a role in creation of electronic traps. In addition, P impurity has a main role in creation of the electronic and hole traps in LiF:Mg,Cu,P. The activation energy of electronic and hole trap in LiF:Mg,Cu, LiF:Mg,P and LiF:Mg,Cu,P crystalline lattice were obtained as 0.3 and 5.5 eV, 0.92 and 3.4 eV and 0.75 and 3.1 eV, respectively. - Graphical abstract: Figure (a) and (b) shows changes in electronic structure and band gap energy of LiF crystal due to presence of Mg and Cu, Mg and P ions respectively. - Highlights: • Electronic structure of LiF, LiF:Mg,Cu, LiF:Mg,P and LiF:Mg,Cu,P materials were studied with WIEN2K code. • In LiF:Mg,Cu and LiF:Mg,Cu,P, Li atom and Cu impurity have a key role in creation of levels. • F atom and Mg impurity only have a role in creation of electronic traps. • In LiF:Mg,Cu,P, P impurity has a main role in creation of electronic and hole traps

  6. Ab initio study of MgH2 formation

    International Nuclear Information System (INIS)

    Novakovic, Nikola; Matovic, Ljiljana; Novakovic, Jasmina Grbovic; Manasijevic, Miodrag; Ivanovic, Nenad

    2009-01-01

    Even if there is considerable literature dealing with structure and properties of MgH 2 compound there are still some uncertain details about nature of bonding governing its formation and decomposition. In order to better understand the processes essential for absorption and desorption of MgH 2 , ab initio DFT based calculations of rutile MgH 2 compound, elemental hcp-Mg, and three different hypothetical hcp-Mg-derived hydrides are performed. Our findings show that all structures are unstable, and that MgH (Wurtzite) is a closest possible candidate for intermediate phase between the hcp-Mg and MgH 2 at 1:1 stoichiometry. An alternative hydration pathway is suggested, including promotion of hcp-Mg to bcc-Mg and consecutive transformation to rutile MgH 2 by means of hydrogen incorporation into Mg matrix. Rutile MgH 2 calculations with various hydrogen vacancies concentration are performed. Calculation shows that at high hydrogen concentration close to 1:2, stable substoichiometric hydride is possible. Calculation also shows that high vacancy (low hydrogen) concentration favors bcc-Mg 2 H over rutile Mg 2 H structure.

  7. Penerapan Metode Pembelajaran Diskusi Dan Resitasi Dalam Meningkatkan Hasil Belajar Pendidikan Agama Hindu Siswa Kelas Iv Sd Negeri 2 Tumbu Karangasem

    Directory of Open Access Journals (Sweden)

    Ida Ayu Putu Suci Lestari

    2018-02-01

    Full Text Available This study aims: (1 to know the application of the use of methods of discussion and recitation can improve the learning outcomes of Hindu religious education fourth graders Elementary School 2 Tumbu. (2 to find out constraints faced in using the method of assignment and recitation in the learning of Hindu religious education fourth grade students of SD Negeri 2 Tumbu.The type of this research is Classroom Action Research (PTK with the subject of this research is the fourth grader of SD Negeri 2 Tumbu, the Hindu of 17 people from 22 students, consist of 10 men, and 7 women. The research was conducted at SD Negeri 2 Tumbu Karangasem. This research was conducted in two cycles. One cycle consists of preparation, execution, observation and reflection. Data collection is done by test method. Then the data is analyzed by quantitative descriptive technique.The results of this study is an increase in learning outcomes, the initial reflection of the average learning outcomes of Hindu religious education amounted to 54.7 with 29,41% complete learning. Then, in the first cycle the average learning outcomes of Hindu religious education increased to 69.4 and the classical completeness of 64.71% is still less than the classical completeness set 85%. Thus, learning in cycle I has not been completed. In cycle II the average learning outcomes of Hindu religious education increased to 79.1 and 100% classical completeness, thus the learning cycle II completed.

  8. An analytical spatial reconstruction algorithm for the SD-SGF-CN hybrid nodal method for one-speed X,Y-geometry SN eigenvalue problems

    International Nuclear Information System (INIS)

    Menezes, Welton Alves; Alves Filho, Hermes; Barros, Ricardo C.

    2009-01-01

    In this paper the X,Y-geometry SD-SGF-CN spectral nodal method, cf. spectral diamond-spectral Green's function-constant nodal, is used to determine the one-speed node-edge average angular fluxes in heterogeneous domains. This hybrid spectral nodal method uses the spectral diamond (SD) auxiliary equation for the multiplying regions and the spectral Green's function (SGF) auxiliary equation for the non-multiplying regions of the domain. Moreover, we consider constant approximations for the transverse-leakage terms in the transverse integrated S N nodal equations. We solve the SD-SGF-CN equations using the one-node block inversion (NBI) iterative scheme, which uses the most recent estimates available for the node-entering fluxes to evaluate the node-exiting fluxes in the directions that constitute the incoming fluxes for the adjacent node. Using these results, we offer an algorithm for analytical reconstruction of the coarse-mesh nodal solution within each spatial node, as localized numerical solutions are not generated by usual accurate nodal methods. Numerical results are presented to illustrate the accuracy of the present algorithm. (author)

  9. O ensino da colocação pronominal: aplicação de SD em turmas de terceiro ano do ensino médio

    Directory of Open Access Journals (Sweden)

    Denise Lino de Araújo

    2014-12-01

    Full Text Available The purpose of this article is to describe and analyze a teaching experience on pronoun placement in two groups of 3rd year of high school. The experience was guided by the concepts of Teaching Sequence (Dolz, Noverraz, Schneuwly, 2004, Language Analysis (Kemiac and Lino de Araujo, 2010 and linguistic variation (Patriot, 2009, and Bagno, 2013. This experience focuses on the teaching of linguistic usage analysis of cases of enclisis, proclisis and mesoclisis, in many situations use; for this, the notion ofTS was reviewed and, based on Cunha (2012, it is understood as a set of organized activities to achieve a learning goal. The data analyzed stem from the ongoing evaluation of the SD, which led to the redirection of planning. The results indicate that the initial and final simulated were not the best indicators of learning. An activity of fixation made on the sixth module of SD presented the most reliable indicators of learning. Thus the conclusion is that diagnostics can not function as good indicators for the evaluation of a SD.

  10. The Influence of MgH2 on the Assessment of Electrochemical Data to Predict the Degradation Rate of Mg and Mg Alloys

    Directory of Open Access Journals (Sweden)

    Wolf-Dieter Mueller

    2014-06-01

    Full Text Available Mg and Mg alloys are becoming more and more of interest for several applications. In the case of biomaterial applications, a special interest exists due to the fact that a predictable degradation should be given. Various investigations were made to characterize and predict the corrosion behavior in vitro and in vivo. Mostly, the simple oxidation of Mg to Mg2+ ions connected with adequate hydrogen development is assumed, and the negative difference effect (NDE is attributed to various mechanisms and electrochemical results. The aim of this paper is to compare the different views on the corrosion pathway of Mg or Mg alloys and to present a neglected pathway based on thermodynamic data as a guideline for possible reactions combined with experimental observations of a delay of visible hydrogen evolution during cyclic voltammetry. Various reaction pathways are considered and discussed to explain these results, like the stability of the Mg+ intermediate state, the stability of MgH2 and the role of hydrogen overpotential. Finally, the impact of MgH2 formation is shown as an appropriate base for the prediction of the degradation behavior and calculation of the corrosion rate of Mg and Mg alloys.

  11. The role of MgO content in ex situ MgB2 wires

    DEFF Research Database (Denmark)

    Kovac, P.; Hugek, I.; Meligek, T.

    2004-01-01

    An experimental study of the effect of MgO content in the MgB2 powder used for ex situ made composite wires was carried out. Two single-core MgB2/Fe/Cu wires were made using commercial MgB2 powders from Alfa Aesar containing different fraction of MgO. Critical temperature and critical currents of...

  12. Positron annihilation study of formation of Mg vacancy in MgO

    International Nuclear Information System (INIS)

    Mizuno, M.; Araki, H.; Shirai, Y.; Inoue, Y.; Sugita, K.; Mizoguchi, T.; Tanaka, I.; Adachi, H.

    2004-01-01

    We have investigated the formation of Mg vacancy induced by ultra-dilute trivalent impurities in MgO by a combination of positron annihilation measurement and theoretical calculations of positron lifetimes. The undoped MgO yields the shortest positron lifetime of 130 ps that is shorter than that of 166 ps previously reported using a single crystal sample. The positron lifetime of the doped samples increases with the increase of the Al or Ga dopant concentration and is saturated at around 170 ps. This result indicates that the previously reported value of 166 ps is ascribed to not the bulk but the vacancy state induced by impurities. The experimental bulk lifetime of 130 ps, which is obtained by employing trapping model, is well reproduced by the theoretical calculation using the semiconductor model. The calculated defect lifetime is about 20 ps longer than the experimental value. This may be due to the lattice relaxation around Mg vacancy associated with the trapping of positrons. (orig.)

  13. Positron annihilation study of formation of Mg vacancy in MgO

    Energy Technology Data Exchange (ETDEWEB)

    Mizuno, M.; Araki, H.; Shirai, Y. [Science and Technology Center for Atoms, Molecules and Ions Control, Osaka Univ., Osaka (Japan); Inoue, Y.; Sugita, K. [Dept. of Materials Science and Engineering, Osaka Univ., Osaka (Japan); Mizoguchi, T.; Tanaka, I.; Adachi, H. [Dept. of Materials Science and Engineering, Kyoto Univ., Kyoto (Japan)

    2004-07-01

    We have investigated the formation of Mg vacancy induced by ultra-dilute trivalent impurities in MgO by a combination of positron annihilation measurement and theoretical calculations of positron lifetimes. The undoped MgO yields the shortest positron lifetime of 130 ps that is shorter than that of 166 ps previously reported using a single crystal sample. The positron lifetime of the doped samples increases with the increase of the Al or Ga dopant concentration and is saturated at around 170 ps. This result indicates that the previously reported value of 166 ps is ascribed to not the bulk but the vacancy state induced by impurities. The experimental bulk lifetime of 130 ps, which is obtained by employing trapping model, is well reproduced by the theoretical calculation using the semiconductor model. The calculated defect lifetime is about 20 ps longer than the experimental value. This may be due to the lattice relaxation around Mg vacancy associated with the trapping of positrons. (orig.)

  14. Heavy Metals (Mg, Mn, Ni and Sn contamination in Soil Samples of Ahvaz II Industrial Estate of Iran in 2013

    Directory of Open Access Journals (Sweden)

    Soheil l Sobhanardakani

    2016-04-01

    Full Text Available Background & Aims of the Study: Due to the rapid industrial development in Khuzestan province of Iran during recent years, this study was performed to analyze the variation of metals concentrations (Mg, Mn, Ni, and Sn in soil samples of Ahvaz II Industrial estate during the spring season of 2013. Materials & Methods: In this experimental study, 27 topsoil samples were collected from nine stations. The intensity of the soil contamination was evaluated, using a contamination factor (Cf and geo-accumulation index (I-geo. Results:  The mean soil concentrations (in mg kg-1 (dry weight were in ranged within 870-1144 (Mg, 188-300 (Mn, 93-199 (Ni and 9-15 (Sn. The data indicated that the I-geo value for all metals falls in class ‘1’. Also the Cf value for Mg and Mn falls in class ‘0’, the Cf value for Sn falls in class ‘1’ and the Cf value for Ni falls in the classes of ‘1’ and ‘2’. The result of the Pearson correlation showed that there were significant positive associations between all metals. Conclusions: According to the results which were achieved by a cluster analysis, there were significant positive associations among all metals based on Pearson correlation coefficient, especially between Ni and Sn; also both of them with Mn. Because the Ni originates from oil sources it can be resulted that Mn and Sn originate from oil sources, too. Therefore, industrial activities and exploitation of oil reservoirs are the main cause of pollution in that area. Also, it can be concluded that, with increasing the distance from the source of pollution, the accumulation of contaminants in the soil samples decreased.

  15. Surface treatments for controlling corrosion rate of biodegradable Mg and Mg-based alloy implants

    International Nuclear Information System (INIS)

    Uddin, M S; Hall, Colin; Murphy, Peter

    2015-01-01

    Due to their excellent biodegradability characteristics, Mg and Mg-based alloys have become an emerging material in biomedical implants, notably for repair of bone as well as coronary arterial stents. However, the main problem with Mg-based alloys is their rapid corrosion in aggressive environments such as human bodily fluids. Previously, many approaches such as control of alloying materials, composition and surface treatments, have been attempted to regulate the corrosion rate. This article presents a comprehensive review of recent research focusing on surface treatment techniques utilised to control the corrosion rate and surface integrity of Mg-based alloys in both in vitro and in vivo environments. Surface treatments generally involve the controlled deposition of thin film coatings using various coating processes, and mechanical surfacing such as machining, deep rolling or low plasticity burnishing. The aim is to either make a protective thin layer of a material or to change the micro-structure and mechanical properties at the surface and sub-surface levels, which will prevent rapid corrosion and thus delay the degradation of the alloys. We have organised the review of past works on coatings by categorising the coatings into two classes—conversion and deposition coatings—while works on mechanical treatments are reviewed based on the tool-based processes which affect the sub-surface microstructure and mechanical properties of the material. Various types of coatings and their processing techniques under two classes of coating and mechanical treatment approaches have been analysed and discussed to investigate their impact on the corrosion performance, biomechanical integrity, biocompatibility and cell viability. Potential challenges and future directions in designing and developing the improved biodegradable Mg/Mg-based alloy implants were addressed and discussed. The literature reveals that no solutions are yet complete and hence new and innovative approaches

  16. Surface treatments for controlling corrosion rate of biodegradable Mg and Mg-based alloy implants

    Science.gov (United States)

    Uddin, M S; Hall, Colin; Murphy, Peter

    2015-01-01

    Due to their excellent biodegradability characteristics, Mg and Mg-based alloys have become an emerging material in biomedical implants, notably for repair of bone as well as coronary arterial stents. However, the main problem with Mg-based alloys is their rapid corrosion in aggressive environments such as human bodily fluids. Previously, many approaches such as control of alloying materials, composition and surface treatments, have been attempted to regulate the corrosion rate. This article presents a comprehensive review of recent research focusing on surface treatment techniques utilised to control the corrosion rate and surface integrity of Mg-based alloys in both in vitro and in vivo environments. Surface treatments generally involve the controlled deposition of thin film coatings using various coating processes, and mechanical surfacing such as machining, deep rolling or low plasticity burnishing. The aim is to either make a protective thin layer of a material or to change the micro-structure and mechanical properties at the surface and sub-surface levels, which will prevent rapid corrosion and thus delay the degradation of the alloys. We have organised the review of past works on coatings by categorising the coatings into two classes—conversion and deposition coatings—while works on mechanical treatments are reviewed based on the tool-based processes which affect the sub-surface microstructure and mechanical properties of the material. Various types of coatings and their processing techniques under two classes of coating and mechanical treatment approaches have been analysed and discussed to investigate their impact on the corrosion performance, biomechanical integrity, biocompatibility and cell viability. Potential challenges and future directions in designing and developing the improved biodegradable Mg/Mg-based alloy implants were addressed and discussed. The literature reveals that no solutions are yet complete and hence new and innovative approaches

  17. Comparison of initial loading doses of 5 mg and 10 mg for warfarin therapy

    Directory of Open Access Journals (Sweden)

    Sidnei Lastória

    2014-03-01

    Full Text Available CONTEXT: The question of what is the best loading dosage of warfarin when starting anticoagulant treatment has been under discussion for ten years. We were unable to find any comparative studies of these characteristics conducted here in Brazil. OBJECTIVE: To compare the safety and efficacy of two initial warfarin dosage regimens for anticoagulant treatment. METHODS: One-hundred and ten consecutive patients of both sexes, with indications for anticoagulation because of venous or arterial thromboembolism, were analyzed prospectively. During the first 3 days of treatment, these patients were given adequate heparin to keep aPTT (activated partial thromboplastin time between 1.5 and 2.5, plus 5 mg of warfarin. From the fourth day onwards, their warfarin doses were adjusted using International Normalized Ratios (INR; target range: 2 to 3. This prospective cohort was compared with a historical series of 110 patients had been given 10 mg of warfarin on the first 2 days and 5 mg on the third day with adjustments based on INR thereafter. Outcomes analyzed were as follows: recurrence of thromboembolism, bleeding events and time taken to enter the therapeutic range. RESULTS: Efficacy, safety and length of hospital stay were similar in both samples. The sample that were given 10 mg entered the therapeutic range earlier (means: 4.5 days vs. 5.8 days, were on lower doses at discharge and had better therapeutic indicators at the first return appointment. CONCLUSIONS: The 10 mg dosage regimen took less time to attain the therapeutic range and was associated with lower warfarin doses at discharge and better INR at first out-patients follow-up visit.

  18. Nanometric MgFe2O4: Synthesis, characterization and its application towards supercapacitor and electrochemical uric acid sensor

    Science.gov (United States)

    Majumder, S.; Kumar, S.; Banerjee, S.

    2017-05-01

    In this paper, we have synthesized nanocrystalline MgFe2O4 (S1) by auto-combustion assisted sol-gel method. The structure and morphology and elemental study of S1 are examined by powder X-ray diffraction (PXRD), field emission scanning electron microscopic (FESEM) and energy dispersive X-ray spectroscopic (EDS) techniques. The FESEM images reveal that the morphology of the sample is rough and average particle size is 50 nm. The PXRD study indicates that the samples are well crystalline and single phase in nature. Moreover, we have performed supercapacitor study by electrochemical galvanostatic charge-discharge (GCD) measurement, which shows pseudo capacitive behavior. S1 contains a high specific capacitance of 428.9 Fg-1 at the current density 0.0625 Ag-1 and can deliver high energy and power density of 18.01 Wh kg-1 and 21468 Wkg-1 respectively. Moreover, uric acid (UA) sensing study has also been performed by cyclic voltmetry (CV) and electrochemical impedance spectroscopy measurement (EIS) of S1. We can use nanocrystalline MgFe2O4 as supercapacitor and UA sensor applications purpose.

  19. Performance of Mg-14Li-1Al-0.1Ce as anode for Mg-air battery

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Yibin; Li, Deyu [School of Chemical Engineering and Technology, Harbin Institute of Technology, West Street No. 92, Harbin 150001 (China); Li, Ning [School of Chemical Engineering and Technology, Harbin Institute of Technology, West Street No. 92, Harbin 150001 (China); Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China); Zhang, Milin; Huang, Xiaomei [Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001 (China)

    2011-02-15

    In this research, a new Mg-air battery based on Mg-14Li-1Al-0.1Ce was prepared and the battery performance was investigated by constant current discharge test. The corrosion behavior of Mg, AZ31 and Mg-Li-Al-Ce were studied by self-corrosion rate measurement and potentiodynamic polarization measurement. The characteristics of Mg-Li-Al-Ce after discharge were investigated by electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that Mg-Li-Al-Ce is more active than Mg and AZ31. The self-corrosion rate is found to be in the order: Mg-Li-Al-Ce < Mg < AZ31. It has been observed that the Mg-air battery based on Mg-Li-Al-Ce offers higher operating voltage, anodic efficiency and capacity than those with Mg and AZ31. SEM and EIS results show that the discharge product of Mg-Li-Al-Ce is loosely adhered to the alloy surface, and thus Mg-Li-Al-Ce could keep high discharge activity during discharge. (author)

  20. Photodissociation spectroscopy of the Mg+-acetic acid complex

    Science.gov (United States)

    Abate, Yohannes; Kleiber, P. D.

    2006-11-01

    We have studied the structure and photodissociation of Mg+-acetic acid clusters. Ab initio calculations suggest four relatively strongly bound ground state isomers for the [MgC2H4O2]+ complex. These isomers include the cis and trans forms of the Mg+-acetic acid association complex with Mg+ bonded to the carbonyl O atom of acetic acid, the Mg+-acetic acid association complex with Mg+ bonded to the hydroxyl O atom of acetic acid, or to a Mg+-ethenediol association complex. Photodissociation through the Mg+-based 3p←3s absorption bands in the near UV leads to direct (nonreactive) and reactive dissociation products: Mg+, MgOH+, Mg(H2O )+, CH3CO+, and MgCH3+. At low energies the dominant reactive quenching pathway is through dehydration to Mg(H2O)+, but additional reaction channels involving C-H and C-C bond activation are also open at higher energies.

  1. Analisis Pengaruh Lokasi, Harga, Kualitas Pendidikan dan Fasilitas Terhadap Minat dan Dampaknya Pada Keputusan Orang Tua Murid Memilih Jasa Pendidikan (Studi Pada Orang Tua Siswa di SD. High/Scope Indonesia Medan)

    OpenAIRE

    Purba, Mery Lani

    2011-01-01

    Mery Lani Purba, 2011, The Analysis of Location, Price, Education Quality, and Facilities Influence toward Interest and the Impact of Parents’ Decision to Chose Education Services (Study on Parents in SD. High/Scope Indonesia Medan), under the guidance of Prof. Dr. Paham Ginting, MS (chairman), Dr. Endang Sulistya Rini, SE, M.Si (members). SD. High/Scope Indonesia Medan is the one of international private elementary schools in Medan. SD. High/Scope Indonesia Medan is a franchise business ...

  2. Effect of heavy metals on pH buffering capacity and solubility of Ca, Mg, K, and P in non-spiked and heavy metal-spiked soils.

    Science.gov (United States)

    Najafi, Sarvenaz; Jalali, Mohsen

    2016-06-01

    In many parts of the world, soil acidification and heavy metal contamination has become a serious concern due to the adverse effects on chemical properties of soil and crop yield. The aim of this study was to investigate the effect of pH (in the range of 1 to 3 units above and below the native pH of soils) on calcium (Ca), magnesium (Mg), potassium (K), and phosphorus (P) solubility in non-spiked and heavy metal-spiked soil samples. Spiked samples were prepared by cadmium (Cd), copper (Cu), nickel (Ni), and zinc (Zn) as chloride salts and incubating soils for 40 days. The pH buffering capacity (pHBC) of each sample was determined by plotting the amount of H(+) or OH(-) added (mmol kg(-1)) versus the related pH value. The pHBC of soils ranged from 47.1 to 1302.5 mmol kg(-1) for non-spiked samples and from 45.0 to 1187.4 mmol kg(-1) for spiked soil samples. The pHBC values were higher in soil 2 (non-spiked and spiked) which had higher calcium carbonate content. The results indicated the presence of heavy metals in soils generally decreased the solution pH and pHBC values in spiked samples. In general, solubility of Ca, Mg, and K decreased with increasing equilibrium pH of non-spiked and spiked soil samples. In the case of P, increasing the pH to about 7, decreased the solubility in all soils but further increase of pH from 7, enhanced P solubility. The solubility trends and values for Ca, Mg, and K did not differed significantly in non-spiked and spiked samples. But in the case of P, a reduction in solubility was observed in heavy metal-spiked soils. The information obtained in this study can be useful to make better estimation of the effects of soil pollutants on anion and cation solubility from agricultural and environmental viewpoints.

  3. Mg-Ca Alloys Produced by Reduction of CaO: Understanding of ECO-Mg Alloy Production

    Science.gov (United States)

    Jung, In-Ho; Lee, Jin Kyu; Kim, Shae K.

    2017-04-01

    There have been long debates about the environment conscious (ECO) Mg technology which utilizes CaO to produce Ca-containing Mg alloys. Two key process technologies of the ECO-Mg process are the chemical reduction of CaO by liquid Mg and the maintenance of melt cleanliness during the alloying of Ca. Thermodynamic calculations using FactSage software were performed to explain these two key issues. In addition, an experimental study was performed to compare the melt cleanliness of the Ca-containing Mg alloys produced by the conventional route with metallic Ca and the ECO-Mg route with CaO.

  4. Non-HDL Cholesterol is a More Superior Predictor of Small-Dense LDL Cholesterol than LDL Cholesterol in Japanese Subjects with TG Levels <400 mg/dL.

    Science.gov (United States)

    Moriyama, Kengo; Takahashi, Eiko

    2016-09-01

    The Japan Atherosclerosis Society (JAS) guidelines for the diagnosis and treatment of hyperlipidemia in Japanese adults recommend using low-density lipoprotein cholesterol (LDL-C) calculated by Friedewald formula (F_LDL-C) for subjects with triglyceride (TG) levels <400 mg/dL and non-high-density lipoprotein cholesterol (non-HDL-C) levels for subjects with TG levels ≥400 mg/dL. Because small-dense LDL particles are more atherogenic than large LDL particles, we sought the better lipid parameter which was more reflective of the high small-dense LDL-C (sdLDL-C) levels in subjects with TG levels <400 mg/dL. This study included 769 Japanese subjects who met our inclusion criteria and underwent an annual health examination, including sdLDL-C analyses. The correlation coefficient of non-HDL-C for sdLDL-C (r=0.760) was significantly higher than that of F_LDL-C (r=0.601). The area under the curve (95% confidence interval) was 0.771 (0.731, 0.811) for F_LDL-C and 0.871 (0.842, 0.901) for non HDL-C, which showed significantly higher predictive value for more than fourth quartile value of sdLDL-C (46 mg/dL). The optimal cut-off point of non-HDL-C was 158 mg/dL. Even in subjects stratified by waist circumstance, homeostasis model assessment of insulin resistance, TG, and F_LDL-C levels and non-HDL-C showed stronger relationships with sdLDL-C than F_LDL-C. Moreover, non-HDL-C showed a better relationship with sdLDL-C than total cholesterol (TC), TC/HDL-C, and non-HDL-C/HDL-C. Our data suggested that non-HDL-C is superior to F_LDL-C and one of the reliable surrogate lipid markers of sdLDL-C in Japanese subjects with TG levels <400 mg/dL.

  5. LOW Mg/Si PLANETARY HOST STARS AND THEIR Mg-DEPLETED TERRESTRIAL PLANETS

    Energy Technology Data Exchange (ETDEWEB)

    Carter-Bond, Jade C.; O' Brien, David P. [Planetary Science Institute, 1700 E. Fort Lowell, Tucson, AZ 85719 (United States); Delgado Mena, Elisa; Israelian, Garik; Gonzalez Hernandez, Jonay I. [Instituto de Astrofisica de Canarias, 38200 La Laguna, Tenerife (Spain); Santos, Nuno C., E-mail: j.bond@unsw.edu.au [Centro de Astrofisica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto (Portugal)

    2012-03-15

    Simulations have shown that a diverse range of extrasolar terrestrial planet bulk compositions are likely to exist based on the observed variations in host star elemental abundances. Based on recent studies, it is expected that a significant proportion of host stars may have Mg/Si ratios below 1. Here we examine this previously neglected group of systems. Planets simulated as forming within these systems are found to be Mg-depleted (compared to Earth), consisting of silicate species such as pyroxene and various feldspars. Planetary carbon abundances also vary in accordance with the host star C/O ratio. The predicted abundances are in keeping with observations of polluted white dwarfs, lending validity to this approach. Further studies are required to determine the full planetary impacts of the bulk compositions predicted here.

  6. Thermodynamic properties of Mg2Si and Mg2Ge investigated by first principles method

    International Nuclear Information System (INIS)

    Wang, Hanfu; Jin, Hao; Chu, Weiguo; Guo, Yanjun

    2010-01-01

    The lattice dynamics and thermodynamic properties of Mg 2 Si and Mg 2 Ge are studied based on the first principles calculations. We obtain the phonon dispersion curves and phonon density of states spectra using the density functional perturbation theory with local density approximations. By employing the quasi-harmonic approximation, we calculate the temperature dependent Helmholtz free energy, bulk modulus, thermal expansion coefficient, specific heat, Debye temperature and overall Grueneisen coefficient. The results are in good agreement with available experimental data and previous theoretical studies. The thermal conductivities of both compounds are then estimated with the Slack's equation. By carefully choosing input parameters, especially the acoustic Debye temperature, we find that the calculated thermal conductivities agree fairly well with the experimental values above 80 K for both compounds. This demonstrates that the lattice thermal conductivity of simple cubic semiconductors may be estimated with satisfactory accuracy by combining the Slack's equation with the necessary thermodynamics parameters derived completely from the first principles calculations.

  7. Relativistic quasiparticle band structures of Mg2Si, Mg2Ge, and Mg2Sn: Consistent parameterization and prediction of Seebeck coefficients

    Science.gov (United States)

    Shi, Guangsha; Kioupakis, Emmanouil

    2018-02-01

    We apply density functional and many-body perturbation theory calculations to consistently determine and parameterize the relativistic quasiparticle band structures of Mg2Si, Mg2Ge, and Mg2Sn, and predict the Seebeck coefficient as a function of doping and temperature. The quasiparticle band gaps, including spin-orbit coupling effects, are determined to be 0.728 eV, 0.555 eV, and 0.142 eV for Mg2Si, Mg2Ge, and Mg2Sn, respectively. The inclusion of the semicore electrons of Mg, Ge, and Sn in the valence is found to be important for the accurate determination of the band gaps of Mg2Ge and Mg2Sn. We also developed a Luttinger-Kohn Hamiltonian and determined a set of band parameters to model the near-edge relativistic quasiparticle band structure consistently for all three compounds that can be applied for thermoelectric device simulations. Our calculated values for the Seebeck coefficient of all three compounds are in good agreement with the available experimental data for a broad range of temperatures and carrier concentrations. Our results indicate that quasiparticle corrections are necessary for the accurate determination of Seebeck coefficients at high temperatures at which bipolar transport becomes important.

  8. Pengaruh Media Lagu Terhadap Hasil Belajar Matematika Pada Materi Sifat-Sifat Bangun Datar Siswa Kelas 5 SD Negeri 5 Kota Bengkulu

    Directory of Open Access Journals (Sweden)

    Myti Sandri

    2018-03-01

    Full Text Available Abstrak. Penelitian ini bertujuan  untuk mengetahui pengaruh media lagu terhadap hasil belajar matematika pada materi sifat-sifat bangun datar untuk siswa kelas 5 SD Negeri 5 Kota Bengkulu Tahun Ajaran 2015/2016 Semester II. Populasi penelitian ini adalah siswa kelas 5 SD Negeri 5 Kota Bengkulu. Sampel penelitian ini dua kelas yaitu  kelas eksperimen yang menerapkan metode ekspositori dengan menggunakan media lagu dan  kelas kontrol yang menerapkan metode ekspositori tanpa menggunakan media lagu. Teknik pengumpulan data dengan menggunakan instrumen tes. Untuk analisis data menggunakan uji-t dengan data berdistribusi normal dan homogen. Berdasarkan hasil penelitian diperoleh nilai rata-rata siswa yang diajar dengan menggunakan media lagu lebih tinggi dibandingkan dengan nilai rata-rata siswa yang diajar tanpa menggunakan media lagu. Nilai rata-rata siswa kelas eksperimen adalah 72.04 dan  nilai rata-rata siswa kelas kontrol adalah 60.21. Hal ini sesuai dengan hasil uji hipotesis nilai thitung = 1.8282 lebih dari nilai ttabel = 1.67065 dalam taraf signifikan 5%. Maka H0 ditolak sehingga dapat disimpulkan bahwa ada pengaruh media lagu terhadap hasil belajar matematika pada sifat-sifat bangun datar kelas 5 SD Negeri 5 Kota Bengkulu. Kata kunci : Hasil belajar, Media Lagu, Metode Ekspositori. Abstrak. The aim of research is knowing how to the effect of media songs on the study’s result of mathematics learning on the material of the two dimentionals characters for student class 5.C SD Negeri 5 Kota Bengkulu school of year 2015/2016 Semester II. Population of this research  is student class 5 SD Negeri 5 Kota Bengkulu. Sample of this research is student class 5.C by 31 student for the experiment class apply to expository methods to use media songs and class 5.A by 31 student for control class to apply expository method not to use media songs. The tecnich data collection is instrument test. For data analysis using t-test with normal distribution

  9. Decomposition of supersaturated solid solutions Mg-Ho and Mg-Gd

    International Nuclear Information System (INIS)

    Sukhanov, V.D.; Dobromyslov, A.V.; Rokhlin, L.L.; Dobatkina, T.V.

    2002-01-01

    Methods of electron microscopy and X-ray diffraction analysis are applied to study ageing magnesium base alloys with holmium and gadolinium. It is shown that the precipitation of supersaturated Mg base solid solutions goes through several subsequent stages and is accompanied by a considerable precipitation hardening effect at the stage of metastable phase precipitation. The influence of aging time and temperature on precipitation kinetics is established [ru

  10. Mineralización bruta de nitrógeno bajo labranza convencional, siembra directa y pastura Gross nitrogen mineralization under conventional tillage, no tillage and pasture

    Directory of Open Access Journals (Sweden)

    Cecilia Videla

    2005-12-01

    Full Text Available La intensificación de la agricultura convencional en el sudeste de Buenos Aires condujo a degradación y reducción de la fertilidad de los suelos. La agricultura bajo siembra directa (SD y la inclusión de pasturas (PP en las rotaciones con cultivos, son alternativas de manejo que tienden a reducir los efectos de la labranza convencional (LC. Los objetivos del presente trabajo fueron: a estudiar las tasas de mineralización, nitrificación y consumo bruto de nitrógeno en Molisoles bajo LC, SD y PP y b cuantificar el nitrógeno potencialmente mineralizable por incubación anaeróbica (NAN y su relación con las tasas de mineralización. El estudio se realizó sobre un complejo de suelos Argiudol típico - Paleudol petrocálcico que estuvo bajo agricultura continua con labranza convencional por 17 años hasta 1994, cuando se implementaron tres manejos: pastura permanente (PP y agricultura continua bajo SD y LC. Los procesos brutos fueron estimados con la técnica de dilución del isótopo 15N y el NAN mediante incubaciones cortas anaeróbicas. La tasa de mineralización bruta (TMB presentó valores menores que 2 mg N kg-1 día-1. La TMB de PP fue siempre mayor que la de los manejos agrícolas. La tasa de consumo bruto tuvo valores entre 0,47 y 3,21 mg N kg-1 día-1, siendo la nitrificación el proceso de consumo más importante para los tres sistemas de manejo (80 %. Las cantidades acumuladas de N mineralizado (PP= 28,6 mg kg-1, SD= 19,7 mg kg-1 y LC= 10,8 mg kg-1 fueron diferentes entre manejos, mientras que las cantidades consumidas bajo los tres tratamientos no fueron diferentes entre si (PP= 72,6 mg kg-1, SD= 56,9 mg kg-1 y LC= 74,1 mg kg-1. El suelo bajo pastura fue el que presentó mayor NAN (93,4 mg kg-1, duplicando los valores correspondientes a LC (41,4 mg kg-1 y SD (46,6 mg kg-1, sin haber diferencias entre los manejos agrícolas. Los coeficientes de correlación linear entre las TMB y NAN para los cuatro tiempos de medición fueron

  11. Adsorption of SO{sub 2} on Li atoms deposited on MgO (1 0 0) surface: DFT calculations

    Energy Technology Data Exchange (ETDEWEB)

    Eid, Kh.M., E-mail: Kheid98@hotmail.com [Physics Department, Faculty of Education, Ain Shams University, Cairo 11757 (Egypt); Ammar, H.Y. [Department of Physics, Faculty of Science, Najran University, Najran 1988 (Saudi Arabia)

    2011-05-01

    The adsorption of sulfur dioxide molecule (SO{sub 2}) on Li atom deposited on the surfaces of metal oxide MgO (1 0 0) on both anionic and defect (F{sub s}-center) sites located on various geometrical defects (terrace, edge and corner) has been studied using density functional theory (DFT) in combination with embedded cluster model. The adsorption energy (E{sub ads}) of SO{sub 2} molecule (S-atom down as well as O-atom down) in different positions on both of O{sup -2} and F{sub s} sites is considered. The spin density (SD) distribution due to the presence of Li atom is discussed. The geometrical optimizations have been done for the additive materials and MgO substrate surfaces (terrace, edge and corner). The oxygen vacancy formation energies have been evaluated for MgO substrate surfaces. The ionization potential (IP) for defect free and defect containing of the MgO surfaces has been calculated. The adsorption properties of SO{sub 2} are analyzed in terms of the E{sub ads}, the electron donation (basicity), the elongation of S-O bond length and the atomic charges on adsorbed materials. The presence of the Li atom increases the catalytic effect of the anionic O{sup -2} site of MgO substrate surfaces (converted from physisorption to chemisorption). On the other hand, the presence of the Li atom decreases the catalytic effect of the F{sub s}-site of MgO substrate surfaces. Generally, the SO{sub 2} molecule is strongly adsorbed (chemisorption) on the MgO substrate surfaces containing F{sub s}-center.

  12. Simulation of precipitation and strengthening in MG-RE alloys

    OpenAIRE

    Liu, Hong

    2017-01-01

    Magnesium - rare earth (Mg-RE) alloys have received considerable attention in the past decades for wider applications in the aerospace industry due to their relatively high strength and excellent creep resistance. Most rare-earth containing magnesium alloys, such as Mg-Y, Mg-Gd, and Mg-Y-Nd, are precipitation hardenable. A technical barrier to the wider applications of such alloys is the lack of a sufficiently large age hardening response. To further improve this response, an improved underst...

  13. Combinatorial search for hydrogen storage alloys: Mg-Ni and Mg-Ni-Ti

    Energy Technology Data Exchange (ETDEWEB)

    Oelmez, Rabia; Cakmak, Guelhan; Oeztuerk, Tayfur [Dept. of Metallurgical and Materials Engineering, Middle East Technical University, 06531 Ankara (Turkey)

    2010-11-15

    A combinatorial study was carried out for hydrogen storage alloys involving processes similar to those normally used in their fabrication. The study utilized a single sample of combined elemental (or compound) powders which were milled and consolidated into a bulk form and subsequently deformed to heavy strains. The mixture was then subjected to a post annealing treatment, which brings about solid state reactions between the powders, yielding equilibrium phases in the respective alloy system. A sample, comprising the equilibrium phases, was then pulverized and screened for hydrogen storage compositions. X-ray diffraction was used as a screening tool, the sample having been examined both in the as processed and the hydrogenated state. The method was successfully applied to Mg-Ni and Mg-Ni-Ti yielding the well known Mg{sub 2}Ni as the storage composition. It is concluded that a partitioning of the alloy system into regions of similar solidus temperature would be required to encompass the full spectrum of equilibrium phases. (author)

  14. Comparative data on SD-OCT for the retinal nerve fiber layer and retinal macular thickness in a large cohort with Marfan syndrome.

    Science.gov (United States)

    Xu, WanWan; Kurup, Sudhi P; Fawzi, Amani A; Durbin, Mary K; Maumenee, Irene H; Mets, Marilyn B

    2017-01-01

    To report the distribution of macular and optic nerve topography in the eyes of individuals with Marfan syndrome aged 8-56 years using spectral domain optical coherence tomography (SD-OCT). Thirty-three patients with Marfan syndrome underwent a full eye examination including slit-lamp biomicroscopy, indirect ophthalmoscopy, and axial length measurement; and SD-OCT measurements of the retinal nerve fiber layer (RNFL) and macular thickness. For patients between the ages of 8 and 12 years, the average RNFL thickness is 98 ± 9 μm, the vertical cup to disc (C:D) ratio is 0.50 ± 0.10, the central subfield thickness (CST) is 274 ± 38 μm, and the macular volume is 10.3 ± 0.6 mm 3 . For patients between the ages of 13 and 17 years, the average RNFL is 86 ± 16 μm, the vertical C:D ratio is 0.35 ± 0.20, the CST is 259 ± 15 μm, and the macular volume is 10.1 ± 0.5 mm 3 . For patients 18 years or older, the average RNFL is 89 ± 12 μm, the vertical C:D ratio is 0.46 ± 0.18, the CST is 262 ± 20 μm, and the macular volume is 10.2 ± 0.4 mm 3 . When the average RNFL data are compared to a normative, age-adjusted database, 6 of 33 (18%) were thinner than the 5% limit. This study reports the distribution of SD-OCT data for patients with Marfan syndrome. Compared to a normative database, 18% of eyes with Marfan syndrome had RNFL thickness < 5% of the population.

  15. The diagnostic performance evaluation of the SD BIOLINE HIV/syphilis Duo rapid test in southern Ethiopia: a cross-sectional study.

    Science.gov (United States)

    Shimelis, Techalew; Tadesse, Endale

    2015-04-23

    To determine the diagnostic performance of the SD BIOLINE HIV/syphilis Duo rapid test. A hospital-based cross-sectional study. This evaluation was conducted at one of the largest hospitals in southern Ethiopia. Serum samples obtained from clients attending the antiretroviral therapy and voluntary counselling and testing centres were used. Sera were originally collected for the purpose of investigating syphilis epidemiology. The performance of the test to detect HIV was evaluated using 400 sera (200 HIV positives and 200 HIV negatives). Also, its performance to detect syphilis was evaluated using 85 syphilis positive and 100 syphilis negative serum samples. Individuals tiebreaker to determine the result. We also used ELISA to resolve discordant HIV results. Syphilis serostatus was determined using the Treponema pallidum haemagglutination assay (TPHA). The respective sensitivity, specificity, positive predictive value and negative predictive value of the SD BIOLINE HIV/syphilis Duo test were 100, 99.5, 99.5 and 100% for HIV and 97.6, 96, 95.4 and 98% for syphilis testing, respectively. In reference to TPHA, the test kit reported 4 false positives and 2 false negative results for syphilis. The κ values were 0.99 for HIV testing and 0.94 for syphilis testing. The excellent performance of the SD BIOLINE HIV/syphilis Duo test to detect HIV as well as syphilis facilitates the integration of syphilis testing and treatment to the already established HIV prevention programme, ultimately contributing to the dual HIV and syphilis elimination goal. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  16. Discovery of the shape coexisting 0{sup +} state in {sup 32}Mg

    Energy Technology Data Exchange (ETDEWEB)

    Wimmer, Kathrin

    2010-08-16

    The evolution of shell structure in exotic nuclei as a function of proton (Z) and neutron (N) number is currently at the center of many theoretical and experimental investigations. It has been realized that the interaction of the last valence protons and neutrons, in particular the monopole component of the residual interaction between those nucleons, can lead to significant shifts in the single-particle energies, leading to the collapse of classic shell closures and the appearance of new shell gaps. The ''Island of Inversion'' around {sup 32}Mg, which is one of the most studied phenomena in the nuclear chart, is a well known example for such changes in nuclear structure. In this region of neutron-rich nuclei around the magic number N=20 strongly deformed ground states in Ne, Na, and Mg isotopes have been observed. Due to the reduction of the N=20 shell gap quadrupole correlations can enable low-lying deformed 2p-2h intruder states from the fp-shell to compete with spherical normal neutron 0p-0h states of the sd-shell. In this situation the promotion of a neutron pair across the N=20 gap can result in deformed intruder ground states. Consequentially the two competing configurations can lead to the coexistence of spherical and deformed 0{sup +} states in the neutron rich nuclei {sup 30,32}Mg. In this work the shape coexistence in {sup 32}Mg was studied by a two neutron transfer reaction at the REX-ISOLDE facility (CERN). The two neutron transfer reaction with a {sup 30}Mg beam involved for the first time the use of a radioactive tritium target in combination with a radioactive heavy ion beam. Light charged particles emitted from the target were detected and identified by the T-REX particle detector while {gamma}-rays were detected by the MINIBALL Germanium detector array. The shape of the angular distribution of the protons allows to unambiguously determine the angular momentum transfer {delta}L of the reaction and thus to identify the 0{sup

  17. Theoretical study and rate constant calculation for the reactions of SH (SD) with Cl2, Br2, and BrCl.

    Science.gov (United States)

    Wang, Li; Liu, Jing-Yao; Li, Ze-Sheng; Sun, Chia-Chung

    2005-01-30

    The mechanisms of the SH (SD) radicals with Cl2 (R1), Br2 (R2), and BrCl (R3) are investigated theoretically, and the rate constants are calculated using a dual-level direct dynamics method. The optimized geometries and frequencies of the stationary points are calculated at the MP2/6-311G(d,p) and MPW1K/6-311G(d,p) levels. Higher-level energies are obtained at the approximate QCISD(T)/6-311++G(3df, 2pd) level using the MP2 geometries as well as by the multicoefficient correlation method based on QCISD (MC-QCISD) using the MPW1K geometries. Complexes with energies less than those of the reactants or products are located at the entrance or the exit channels of these reactions, which indicate that the reactions may proceed via an indirect mechanism. The enthalpies of formation for the species XSH/XSD (X = Cl and Br) are evaluated using hydrogenation working reactions method. By canonical variational transition-state theory (CVT), the rate constants of SH and SD radicals with Cl2, Br2, and BrCl are calculated over a wide temperature range of 200-2000 K at the a-QCISD(T)/6-311++G(3df, 2pd)//MP2/6-311G(d, p) level. Good agreement between the calculated and experimental rate constants is obtained in the measured temperature range. Our calculations show that for SH (SD) + BrCl reaction bromine abstraction (R3a or R3a') leading to the formation of BrSH (BrSD) + Cl in a barrierless process dominants the reaction with the branching ratios for channels 3a and 3a' of 99% at 298 K, which is quite different from the experimental result of k3a'/k3' = 54 +/- 10%. Negative activation energies are found at the higher level for the SH + Br2 and SH + BrCl (Br-abstraction) reactions; as a result, the rate constants show a slightly negative temperature dependence, which is consistent with the determination in the literature. The kinetic isotope effects for the three reactions are "inverse". The values of kH/kD are 0.88, 0.91, and 0.69 at room temperature, respectively, and they increase

  18. References for HNF-SD-WM-TRD-007, ''System specification for the double-shell tank system: HNF-PROs, CFRs, DOE Orders, WACs''

    International Nuclear Information System (INIS)

    Shaw, C.P.

    1998-01-01

    HNF-SD-WM-TRD-O07, System Specification for the Double-Shell Tank System, (hereafter referred to as DST Specification), defines the requirements of the double-shell tank system at the Hanford Site for Phase 1 privatization. Many of the sections in this document reference other documents for design guidance and requirements. Referenced documents include Project Hanford Management Contract (PHMC) procedures (HNF-PROS), Codes of Federal Regulation (CFRs), DOE Orders, and Washington Administrative Codes (WACs). This document provides rationale for the selection and inclusion of HNF-PROS, CFRs, DOE Orders and WACs

  19. Mg-lattice associations in red coralline algae

    Science.gov (United States)

    Kamenos, N. A.; Cusack, M.; Huthwelker, T.; Lagarde, P.; Scheibling, R. E.

    2009-04-01

    Recent investigations have shown red coralline algae to record ambient temperature in their calcite skeletons. Temperature recorded by variation in Mg concentrations within algal growth bands has sub-annual resolution and high accuracy. The conversion of Mg concentration to temperature is based on the assumption of Ca replacement by Mg within the algal calcite skeleton at higher temperatures. While Mg-temperature relationships in coralline algae have been calibrated for some species, the location of Mg within the calcite lattice remains unknown. Critically, if Mg is not a lattice component but associated with organic components this could lead to erroneous temperature records. Before coralline algae are used in large scale climate reconstructions it is therefore important to determine the location of Mg. Synchrotron Mg-X-ray absorbance near edge structure (XANES) indicates that Mg is associated with the calcite lattice in Lithothamnion glaciale (contemporary free-living, contemporary encrusting and sub-fossil free-living) and Phymatolithon calcareum (contemporary free-living) coralline algae. Mg is deposited within the calcite lattice in all seasons ( L. glaciale & P. calcareum) and thallus areas ( P. calcareum). These results suggest L. glaciale and P. calcareum are robust Mg-palaeotemperature proxies. We suggest that similar confirmation be obtained for Mg associations in other species of red coralline algae aiding our understanding of their role in climate reconstruction at large spatial scales.

  20. Inhibitory effect of MgSO4 on calcium overload after radiation-induced brain injuries

    International Nuclear Information System (INIS)

    Tu Yu; Zhou Yuying; Wang Lili

    2005-01-01

    Objective: To explore the neuroprotective effect of magnesium sulfate (MgSO 4 ) on radiation-induced acute brain injuries. Methods: A total of 60 mature Sprague-Dawley rats were randomly divided into 3 groups: blank control group, experimental control group and experimental therapy group. The whole brain of SD rats of experimental control group and experimental therapy group was irradiated to a dose of 20 Gy using 6 MeV electrons. Magnesium sulfate was injected intraperitoneally into the rats of experimental therapy group before and after irradiation for five times. At different time points (24 h, 7 days, 14 days, 30 days after irradiation), the brain tissue was taken. Plasma direct reading spectrography was used to measure the contents of Ca 2+ , Mg 2+ in brain tissue, and the percentage of brain water content was calculated with the wet-dry weight formula. Results: Compared with the blank control group, the percentage of brain water and content of Ca 2+ in brain of the experimental control group increased markedly (P 2+ decreased significantly (P 2+ in brain of the experimental therapy group were significantly lower than those of the experimental control group (P<0.05). Conclusion: Magnesium sulfate used in the early stage after irradiation can inhibit the calcium overload in rat brain , and attenuate brain edema and injuries. (authors)

  1. The dependence of Raman scattering on Mg concentration in Mg-doped GaN grown by MBE

    International Nuclear Information System (INIS)

    Flynn, Chris; Lee, William

    2014-01-01

    Magnesium-doped GaN (GaN:Mg) films having Mg concentrations in the range 5 × 10 18 –5 × 10 20 cm −3 were fabricated by molecular beam epitaxy. Raman spectroscopy was employed to study the effects of Mg incorporation on the positions of the E 2 and A 1 (LO) lines identifiable in the Raman spectra. For Mg concentrations in excess of 2 × 10 19 cm −3 , increases in the Mg concentration shift both lines to higher wave numbers. The shifts of the Raman lines reveal a trend towards compressive stress induced by incorporation of Mg into the GaN films. The observed correlation between the Mg concentration and the Raman line positions establish Raman spectroscopy as a useful tool for optimizing growth of Mg-doped GaN. (papers)

  2. HYDROLOGY, Grant County, SD, USA

    Data.gov (United States)

    Federal Emergency Management Agency, Department of Homeland Security — Hydrology data include spatial datasets and data tables necessary for documenting the hydrologic procedures for estimating flood discharges for a flood insurance...

  3. Structural and electronic properties of Mg and Mg-Nb co-doped TiO2 (101) anatase surface

    International Nuclear Information System (INIS)

    Sasani, Alireza; Baktash, Ardeshir; Mirabbaszadeh, Kavoos; Khoshnevisan, Bahram

    2016-01-01

    Highlights: • Formation energy of Mg and Mg-Nb co-doped TiO_2 anatase surface (101) is studied. • Effect of Mg defect to the TiO_2 anatase (101) surface and bond length distribution of the surface is studied and it is shown that Mg defects tend to stay far from each other. • Effect of Mg and Nb to the bond length distribution of the surface studied and it is shown that these defects tend to stay close to each other. • Effects of Mg and Mg-Nb defects on DSSCs using TiO_2 anatase hosting these defects are studied. - Abstract: In this paper, by using density functional theory, Mg and Nb-Mg co-doping of TiO_2 anatase (101) surfaces are studied. By studying the formation energy of the defects and the bond length distribution of the surface, it is shown that Mg defects tend to stay as far as possible to induce least possible lattice distortion while Nb and Mg defects stay close to each other to cause less stress to the surface. By investigating band structure of the surface and changes stemmed from the defects, potential effects of Mg and Mg-Nb co-doping of TiO_2 surface on dye-sensitized solar cells are investigated. In this study, it is shown that the Nb-Mg co-doping could increase J_S_C of the surface while slightly decreasing V_O_C compared to Mg doped surface, which might result in an increase in efficiency of the DSSCs compared to Nb or Mg doped surfaces.

  4. Structural and electronic properties of Mg and Mg-Nb co-doped TiO2 (101) anatase surface

    Energy Technology Data Exchange (ETDEWEB)

    Sasani, Alireza [Department of Science, Karaj Islamic Azad University, Karaj, Alborz, P.O. Box 31485-313 (Iran, Islamic Republic of); Baktash, Ardeshir [Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167 (Iran, Islamic Republic of); Mirabbaszadeh, Kavoos, E-mail: mirabbas@aut.ac.ir [Department of Energy Engineering and Physics, Amirkabir University of Technology, Tehran, P. O. Box 15875-4413 (Iran, Islamic Republic of); Khoshnevisan, Bahram [Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P.O. Box 87317-51167 (Iran, Islamic Republic of)

    2016-10-30

    Highlights: • Formation energy of Mg and Mg-Nb co-doped TiO{sub 2} anatase surface (101) is studied. • Effect of Mg defect to the TiO{sub 2} anatase (101) surface and bond length distribution of the surface is studied and it is shown that Mg defects tend to stay far from each other. • Effect of Mg and Nb to the bond length distribution of the surface studied and it is shown that these defects tend to stay close to each other. • Effects of Mg and Mg-Nb defects on DSSCs using TiO{sub 2} anatase hosting these defects are studied. - Abstract: In this paper, by using density functional theory, Mg and Nb-Mg co-doping of TiO{sub 2} anatase (101) surfaces are studied. By studying the formation energy of the defects and the bond length distribution of the surface, it is shown that Mg defects tend to stay as far as possible to induce least possible lattice distortion while Nb and Mg defects stay close to each other to cause less stress to the surface. By investigating band structure of the surface and changes stemmed from the defects, potential effects of Mg and Mg-Nb co-doping of TiO{sub 2} surface on dye-sensitized solar cells are investigated. In this study, it is shown that the Nb-Mg co-doping could increase J{sub SC} of the surface while slightly decreasing V{sub OC} compared to Mg doped surface, which might result in an increase in efficiency of the DSSCs compared to Nb or Mg doped surfaces.

  5. Constraints on the ^22Ne(α,n)^25Mg reaction rate from ^natMg+n Total and ^25Mg(n,γ ) Cross Sections

    Science.gov (United States)

    Koehler, Paul

    2002-10-01

    The ^22Ne(α,n)^25Mg reaction is the neutron source during the s process in massive and intermediate mass stars as well as a secondary neutron source during the s process in low mass stars. Therefore, an accurate determination of this rate is important for a better understanding of the origin of nuclides heavier than iron as well as for improving s-process models. Also, because the s process produces seed nuclides for a later p process in massive stars, an accurate value for this rate is important for a better understanding of the p process. Because the lowest observed resonance in direct ^22Ne(α,n)^25Mg measurements is considerably above the most important energy range for s-process temperatures, the uncertainty in this rate is dominated by the poorly known properties of states in ^26Mg between this resonance and threshold. Neutron measurements can observe these states with much better sensitivity and determine their parameters much more accurately than direct ^22Ne(α,n)^25Mg measurements. I have analyzed previously reported Mg+n total and ^25Mg(n,γ ) cross sections to obtain a much improved set of resonance parameters for states in ^26Mg in this region, and an improved estimate of the uncertainty in the ^22Ne(α,n)^25Mg reaction rate. This work was supported by the U.S. DOE under contract No. DE-AC05-00OR22725 with UT-Battell, LLC.

  6. Coherent interface structures and intergrain Josephson coupling in dense MgO/Mg{sub 2}Si/MgB{sub 2} nanocomposites

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Katsuya; Takahashi, Kazuyuki; Uchino, Takashi, E-mail: uchino@kobe-u.ac.jp [Department of Chemistry, Graduate School of Science, Kobe University, Nada, Kobe 657-8501 (Japan); Nagashima, Yukihito [Nippon Sheet Glass Co., Ltd., Konoike, Itami 664-8520 (Japan); Seto, Yusuke [Department of Planetology, Graduate School of Science, Kobe University, Nada, Kobe 657-8501 (Japan); Matsumoto, Megumi; Sakurai, Takahiro [Center for Support to Research and Education Activities, Kobe University, Nada, Kobe 657-8501 (Japan); Ohta, Hitoshi [Molecular Photoscience Research Center, Kobe University, Nada, Kobe 657-8501 (Japan)

    2016-07-07

    Many efforts are under way to control the structure of heterointerfaces in nanostructured composite materials for designing functionality and engineering application. However, the fabrication of high-quality heterointerfaces is challenging because the crystal/crystal interface is usually the most defective part of the nanocomposite materials. In this work, we show that fully dense insulator (MgO)/semiconductor(Mg{sub 2}Si)/superconductor(MgB{sub 2}) nanocomposites with atomically smooth and continuous interfaces, including epitaxial-like MgO/Mg{sub 2}Si interfaces, are obtained by solid phase reaction between metallic magnesium and a borosilicate glass. The resulting nanocomposites exhibit a semiconductor-superconducting transition at 36 K owing to the MgB{sub 2} nanograins surrounded by the MgO/Mg{sub 2}Si matrix. This transition is followed by the intergrain phase-lock transition at ∼24 K due to the construction of Josephson-coupled network, eventually leading to a near-zero resistance state at 17 K. The method not only provides a simple process to fabricate dense nanocomposites with high-quality interfaces, but also enables to investigate the electric and magnetic properties of embedded superconducting nanograins with good intergrain coupling.

  7. Photoluminescence of Mg_2Si films fabricated by magnetron sputtering

    International Nuclear Information System (INIS)

    Liao, Yang-Fang; Xie, Quan; Xiao, Qing-Quan; Chen, Qian; Fan, Meng-Hui; Xie, Jing; Huang, Jin; Zhang, Jin-Min; Ma, Rui; Wang, Shan-Lan; Wu, Hong-Xian; Fang, Di

    2017-01-01

    Highlights: • High quality Mg_2Si films were grown on Si (111) and glass substrates with magnetron sputtering, respectively. • The first observation of Photoluminescence (PL) of Mg_2Si films was reported. • The Mg_2Si PL emission wavelengths are almost independence on temperature in the range of 77–300 K. • The strongest PL emissions may be attributed to interstitial Mg donor level to valence band transitions. • The activation energy of Mg_2Si is determined from the quenching of major luminescence peaks. - Abstract: To understand the photoluminescence mechanisms and optimize the design of Mg_2Si-based light-emitting devices, Mg_2Si films were fabricated on silicon (111) and glass substrates by magnetron sputtering technique, and the influences of different substrates on the photoelectric properties of Mg_2Si films were investigated systematically. The crystal structure, cross-sectional morphology, composition ratios and temperature-dependent photoluminescence (PL) of the Mg_2Si films were examined using X-ray diffraction (XRD), Scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS) and PL measurement system, respectively. XRD results indicate that the Mg_2Si film on Si (111) displays polycrystalline structure, whereas Mg_2Si film on glass substrate is of like-monocrystalline structure.SEM results show that Mg_2Si film on glass substrate is very compact with a typical dense columnar structure, and the film on Si substrate represents slight delamination phenomenon. EDS results suggest that the stoichiometry of Mg and Si is approximately 2:1. Photoluminescence (PL) of Mg_2Si films was observed for the first time. The PL emission wavelengths of Mg_2Si are almost independence on temperature in the range of 77–300 K. The PL intensity decreases gradually with increasing temperature. The PL intensity of Mg_2Si films on glass substrate is much larger than that of Mg_2Si film on Si (111) substrate. The activation energy of 18 meV is

  8. Study of some Mg-based ferrites as humidity sensors

    International Nuclear Information System (INIS)

    Rezlescu, N; Rezlescu, E; Doroftei, C; Popa, P D

    2005-01-01

    The micostructure and humidity sensitivity of MgFe 2 O 4 + CaO, Mg 0.5 Cu 0.5 Fe 1.8 Ga 0.2 O 4 , Mg 0.5 Zn 0.5 Fe 2 O 4 + KCl and MgMn 0.2 Fe 1.8 O 4 ferrites were investigated. We have found that the humidity sensitivity largely depends on composition, crystallite size, surface area and porosity. The best results concerning humidity sensitivity were obtained for MgMn 0.2 Fe 1.8 O 4 ferrite

  9. Intrinsic Conductivity in Magnesium-Oxygen Battery Discharge Products: MgO and MgO2

    DEFF Research Database (Denmark)

    Smith, Jeffrey G.; Naruse, Junichi; Hiramatsu, Hidehiko

    2017-01-01

    Nonaqueous magnesium–oxygen (or “Mg-air”) batteries are attractive next generation energy storage devices due to their high theoretical energy densities, projected low cost, and potential for rechargeability. Prior experiments identified magnesium oxide, MgO, and magnesium peroxide, MgO2...

  10. A Computational Investigation of Precipitates in Mg-RE Alloys With Applications To Mg-X Systems

    Science.gov (United States)

    Issa, Ahmed

    Increasing fuel efficiency in transportation vehicles is a major policy goal for both government and auto and aerospace manufacturers. Lightweight structural materials, such as magnesium alloys, hold great promise in enabling such fuel efficiency gains. Understanding the controlling factors in Mg alloy strengthening is crucial for the rational design of structurally strong and inexpensive Mg alloys. In this work, we seek to understand the energetic underpinnings giving rise to a class of remarkably strong Mg alloys: Mg-RE systems. We use first-principles methods to efficiently explore seventeen Mg-RE systems, drawing out broad patterns and distilling our knowledge into simple design rules for Mg alloys. We begin by investigating the controlling factors for the Mg-strengthening prismatic plate precipitates in Mg-RE systems, discovering the critical role of strain in such systems. We then proceed to investigate the surprising role of interfacial energies in determining the course of the Mg-RE precipitation reactions. Using strain and interfacial energies, we construct a phase-field model which accurately depicts the precipitate morphology as a function of time and size in a Mg-Nd system. Finally, we combine our gained insights to implement a computational alloy design scheme on a large portion of the periodic table where we seek Mg-strengthening solutes. Our work advances the understanding of strengthening in Mg alloys and lays the groundwork for full scale computational alloy design.

  11. Primary visual cortex in neandertals as revealed from the occipital remains from the El Sidrón site, with emphasis on the new SD-2300 specimen.

    Science.gov (United States)

    García-Tabernero, Antonio; Peña-Melián, Angel; Rosas, Antonio

    2018-07-01

    The comparative analysis of the endocranial surface of the El Sidrón new occipital fragment SD-2300 shows meaningful differences in the configuration of the occipital pole region between neandertals and anatomically modern humans (AMH). The particular asymmetries found in neandertals in the venous sinus drainage and the petalial patterns are recognizable in this new specimen as well. In addition, the supra- and infracalcarine fossae of the occipital pole region appear to deviate obliquely from the mid-line when compared with sapiens. Due to the excellent preservation conditions of SD-2300, the main sulci and gyri of the occipital pole area have been identified, this degree of detail being uncommon in a fossil specimen; in general, the gyrification pattern is similar to AMH, but with some notable differences. Particularly interesting is the description of the lunate and the calcarine sulci. The lunate sulcus is located close to the occipital pole, in a similar posterior position to in other Homo species. Regarding the calcarine sulcus, there are significant differences in the primary visual cortex, with the V1 area, or Brodmann area 17, being larger in Homo neanderthalensis than in Homo sapiens. This may lead to greater visual acuity in neandertals than in sapiens. © 2018 Anatomical Society.

  12. THE ROMER DELAY AND MASS RATIO OF THE sdB+dM BINARY 2M 1938+4603 FROM KEPLER ECLIPSE TIMINGS

    Energy Technology Data Exchange (ETDEWEB)

    Barlow, Brad N.; Wade, Richard A.; Liss, Sandra E. [Department of Astronomy and Astrophysics, 525 Davey Lab, Pennsylvania State University, University Park, PA 16802 (United States)

    2012-07-10

    The eclipsing binary system 2M 1938+4603 consists of a pulsating hot subdwarf B star and a cool M dwarf companion in an effectively circular three-hour orbit. The light curve shows both primary and secondary eclipses, along with a strong reflection effect from the cool companion. Here, we present constraints on the component masses and eccentricity derived from the Romer delay of the secondary eclipse. Using six months of publicly available Kepler photometry obtained in short-cadence mode, we fit model profiles to the primary and secondary eclipses to measure their centroid values. We find that the secondary eclipse arrives on average 2.06 {+-} 0.12 s after the midpoint between primary eclipses. Under the assumption of a circular orbit, we calculate from this time delay a mass ratio of q = 0.2691 {+-} 0.0018 and individual masses of M{sub sd} = 0.372 {+-} 0.024 M{sub Sun} and M{sub c} = 0.1002 {+-} 0.0065 M{sub Sun} for the sdB and M dwarf, respectively. These results differ slightly from those of a previously published light-curve modeling solution; this difference, however, may be reconciled with a very small eccentricity, ecos {omega} Almost-Equal-To 0.00004. We also report a decrease in the orbital period of P-dot = (-1.23 {+-} 0.07) Multiplication-Sign 10{sup -10}.

  13. Enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers by inhibiting Ta diffusion

    Energy Technology Data Exchange (ETDEWEB)

    Li, Xu-Jing; Jiang, Shao-Long; Zhang, Jing-Yan; Liu, Qian-Qian; Liu, Yi-Wei; Zhao, Jian-Cheng [Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China); Wu, Zheng-Long [Analytical and Testing Center, Beijing Normal University, Beijing 100875 (China); Feng, Chun, E-mail: fengchun@ustb.edu.cn [Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China); Li, Ming-Hua [Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China); Yu, Guang-Hua, E-mail: ghyu@mater.ustb.edu.cn [Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083 (China)

    2016-03-01

    Graphical abstract: To reveal the underlying mechanism of Mg influence on the enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers, the X-ray photoelectron spectroscopy analysis have been performed. It is found that a certain amount of Mg interlayer at the CoFeB/MgO interface could prevent the Ta oxidation to some extent due to the oxygen deficit MgO{sub x} (x < 1), and consequently lower the diffusion motivation of Ta from the bottom layer to the CoFeB/MgO interfaces to some extent during the annealing process. The prevention of Ta diffusion realizes the effective hybridization of Fe and O at the CoFeB/MgO interface and maintains interfacial magnetic anisotropy (K{sub CoFeB/MgO}). As a result, the perpendicular magnetic anisotropy at high annealing temperatures was maintained. - Highlights: • High annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers was realized. • X-ray photoelectron spectroscopy analysis has been performed to explore the reasons. • The prevention of Ta diffusion was realized by introducing Mg at the CoFeB/MgO interface. - Abstracts: To reveal the underlying mechanism of Mg influence on the enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers, the X-ray photoelectron spectroscopy analysis has been performed. It is found that a certain amount of Mg interlayer at the CoFeB/MgO interface could prevent the Ta oxidation, and consequently lower the diffusion motivation of Ta from the bottom layer to the CoFeB/MgO interfaces to some extent in the annealing process. The prevention of Ta diffusion realizes the effective hybridization of Fe and O at the CoFeB/MgO interface and maintains interfacial magnetic anisotropy (KCoFeB/MgO). As a result, the perpendicular magnetic anisotropy at high annealing temperatures is maintained.

  14. Administração inadvertida de 4 mg de morfina por via subaracnóidea: relato de caso Administración inadvertida de 4 mg de morfina por vía subaracnoidea: relato de caso Accidental subarachnoid administration of 4 mg of morphine: case report

    Directory of Open Access Journals (Sweden)

    Bruno Salomé de Morais

    2008-04-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A administração de morfina por via subaracnóidea é técnica bem estabelecida para analgesia pós-operatória devido a sua eficácia, segurança e baixo custo. A administração inadvertida de 4 mg de morfina por via subaracnóidea complicada por fibrilação atrial ap��s administração de naloxona foi o objetivo desse relato. RELATO DO CASO: Paciente do sexo masculino, 45 anos, 75 kg, 1,72 m, estado físico ASA II, hipertenso, a ser submetido à reconstrução do ligamento cruzado anterior do joelho esquerdo. Após a realização da raquianestesia, foi constatada troca da ampola de morfina, com administração de 4 mg (0,4 mL da ampola de 10 mg por via subaracnóidea. A freqüência respiratória oscilou entre 12 e 16 incursões respiratórias por minuto e o paciente manteve-se estável hemodinamicamente sem queixas no intra-operatório. Após 30 minutos da admissão na SRPA, apresentou vômitos e sudorese, tratados com 0,4 mg de naloxona seguidos de infusão contínua de 0,2 mg.h-1 até o desaparecimento dos sintomas. A infusão contínua de naloxona foi mantida na Unidade de Terapia Intensiva (UTI, onde a pressão arterial, freqüência cardíaca, freqüência respiratória, saturação de oxigênio foram monitoradas, assim como a presença de náusea, prurido, vômito, sedação, dor e retenção urinária observadas. Após 2 horas de admissão na UTI, o paciente apresentou fibrilação atrial aguda sem instabilidade hemodinâmica. O ritmo sinusal foi restabelecido após 150 mg de amiodarona e interrupção da infusão de naloxona. Nas 18 horas seguintes apresentou estabilidade hemodinâmica e evoluiu sem outras intercorrências até a alta hospitalar. CONCLUSÕES: O presente relato alerta para o risco de troca de medicamentos durante o ato anestésico e ressalta a importância do encaminhamento dos pacientes em tratamento de sobredose de opióides à UTI em virtude de seus potenciais efeitos adversos

  15. Single crystal structures of the new vanadates CuMgVO{sub 4} and AgMgVO{sub 4}

    Energy Technology Data Exchange (ETDEWEB)

    Ben Yahia, Hamdi, E-mail: Hyahia@qf.org.qa [Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577 (Japan); Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha (Qatar); Shikano, Masahiro, E-mail: shikano.masahiro@aist.go.jp [Research Institute of Electrochemical Energy, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577 (Japan); Essehli, Rachid; Belharouak, Ilias [Qatar Environment and Energy Research Institute, Hamad Bin Khalifa University, Qatar Foundation, PO Box 5825, Doha (Qatar)

    2016-08-01

    The new compounds CuMgVO{sub 4} and AgMgVO{sub 4} have been synthesized by a solid state reaction route. Their crystal structures were determined from single-crystal X-ray diffraction data. CuMgVO{sub 4} crystallizes with Na{sub 2}CrO{sub 4}-type structure with space group Cmcm, a = 5.6932 (10), b = 8.7055 (15), c = 6.2789 (10) Å, V = 311.20 (9) Å{sup 3}, and Z = 4, whereas AgMgVO{sub 4} crystallizes in the maricite-type structure with space group Pnma, a = 9.4286 (14), b = 6.7465 (10), c = 5.3360 (8) Å, V = 339.42 (9) Å{sup 3}, and Z = 4. Both structures of CuMgVO{sub 4}, and AgMgVO{sub 4} contain MgO{sub 4} chains made up of edge-sharing MgO{sub 6} octahedra. In CuMgVO{sub 4} the MgO{sub 4} chains are interconnected through CuVO{sub 4} double chains made up of VO{sub 4} and CuO{sub 4} tetrahedra sharing corners and edges, however in AgMgVO{sub 4} the chains are interlinked by the VO{sub 4} and AgO{sub 4} tetrahedra sharing only corners. - Highlights: • We have been able to grow CuMgVO{sub 4} and AgMgVO{sub 4} single crystals. • We solved their crystal structures using single crystal data. • We compared the crystal structures of CuMgVO{sub 4} and AgMgVO{sub 4}.

  16. Dielectric and impedance study of praseodymium substituted Mg-based spinel ferrites

    Energy Technology Data Exchange (ETDEWEB)

    Farid, Hafiz Muhammad Tahir, E-mail: tahirfaridbzu@gmail.com [Department of Physics, Bahauddin Zakariya, University Multan, 60800 (Pakistan); Ahmad, Ishtiaq; Ali, Irshad [Department of Physics, Bahauddin Zakariya, University Multan, 60800 (Pakistan); Ramay, Shahid M. [College of Science, Physics and Astronomy Department, King Saud University, P.O. Box 2455, 11451 Riyadh (Saudi Arabia); Mahmood, Asif [Chemical Engineering Department, College of Engineering, King Saud University, Riyadh (Saudi Arabia); Murtaza, G. [Centre for Advanced Studies in Physics, GC University, Lahore 5400 (Pakistan)

    2017-07-15

    Highlights: • Magnesium based spinel ferrites were successfully synthesized by sol-gel method. • Dielectric constant shows the normal spinel ferrites behavior. • The dc conductivity are found to decrease with increasing temperature. • The samples with low conductivity have high values of activation energy. • The Impedance decreases with increasing frequency of applied field. - Abstract: Spinel ferrites with nominal composition MgPr{sub y}Fe{sub 2−y}O{sub 4} (y = 0.00, 0.025, 0.05, 0.075, 0.10) were prepared by sol-gel method. Temperature dependent DC electrical conductivity and drift mobility were found in good agreement with each other, reflecting semiconducting behavior. The dielectric properties of all the samples as a function of frequency (1 MHz–3 GHz) were measured at room temperature. The dielectric constant and complex dielectric constant of these samples decreased with the increase of praseodymium concentration. In the present spinel ferrite, Cole–Cole plots were used to separate the grain and grain boundary’s effects. The substitution of praseodymium ions in Mg-based spinel ferrites leads to a remarkable rise of grain boundary’s resistance as compared to the grain’s resistance. As both AC conductivity and Cole–Cole plots are the functions of concentration, they reveal the dominant contribution of grain boundaries in the conduction mechanism. AC activation energy was lower than dc activation energy. Temperature dependence normalized AC susceptibility of spinel ferrites reveals that MgFe{sub 2}O{sub 4} exhibits multi domain (MD) structure with high Curie temperature while on substitution of praseodymium, MD to SD transitions occurs. The low values of conductivity and low dielectric loss make these materials best candidate for high frequency application.

  17. Enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers by inhibiting Ta diffusion

    International Nuclear Information System (INIS)

    Li, Xu-Jing; Jiang, Shao-Long; Zhang, Jing-Yan; Liu, Qian-Qian; Liu, Yi-Wei; Zhao, Jian-Cheng; Wu, Zheng-Long; Feng, Chun; Li, Ming-Hua; Yu, Guang-Hua

    2016-01-01

    Graphical abstract: To reveal the underlying mechanism of Mg influence on the enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers, the X-ray photoelectron spectroscopy analysis have been performed. It is found that a certain amount of Mg interlayer at the CoFeB/MgO interface could prevent the Ta oxidation to some extent due to the oxygen deficit MgO_x (x < 1), and consequently lower the diffusion motivation of Ta from the bottom layer to the CoFeB/MgO interfaces to some extent during the annealing process. The prevention of Ta diffusion realizes the effective hybridization of Fe and O at the CoFeB/MgO interface and maintains interfacial magnetic anisotropy (K_C_o_F_e_B_/_M_g_O). As a result, the perpendicular magnetic anisotropy at high annealing temperatures was maintained. - Highlights: • High annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers was realized. • X-ray photoelectron spectroscopy analysis has been performed to explore the reasons. • The prevention of Ta diffusion was realized by introducing Mg at the CoFeB/MgO interface. - Abstracts: To reveal the underlying mechanism of Mg influence on the enhanced post-annealing stability of perpendicular Ta/CoFeB/Mg/MgO multilayers, the X-ray photoelectron spectroscopy analysis has been performed. It is found that a certain amount of Mg interlayer at the CoFeB/MgO interface could prevent the Ta oxidation, and consequently lower the diffusion motivation of Ta from the bottom layer to the CoFeB/MgO interfaces to some extent in the annealing process. The prevention of Ta diffusion realizes the effective hybridization of Fe and O at the CoFeB/MgO interface and maintains interfacial magnetic anisotropy (KCoFeB/MgO). As a result, the perpendicular magnetic anisotropy at high annealing temperatures is maintained

  18. Total Diet Study. Mg and Mn content estimation of a Market Basket of Sao Paulo state (Brazil) by Instrumental Neutron Activation

    International Nuclear Information System (INIS)

    Roseane Pagliaro Avegliano; Vera Akiko Maihara

    2014-01-01

    Total Diet Studies (TDS) have been carried out to estimate dietary intakes of the essential and toxic elements for a large-scale population over a specific period of time. In this study, the TDS was based on the evaluation of food representing a Market Basket (MB), which reflected the dietary habits of the Sao Paulo State population, corresponding to 72 % of the average food consumption for the state of Sao Paulo. In the present Total Diet Study, magnesium and manganese concentrations were determined in 30 of the most consumed food groups of a MB of Sao Paulo State, Brazil. Instrumental Neutron Activation Analysis (INAA) has been successfully used on a regularly basis in several areas of nutrition and foodstuffs. Element concentrations were determined by INAA in freeze-dried samples and ranged in mg kg -1 . Mg 41.4 (fats)-5287 (coffee) and Mn 0.12 (prime grade beef)-32.9 (coffee). The average daily Mg and Mn intake was calculated by multiplying the concentration of each element in each table-ready food group by the respective weight (g day -1 ) of the food group in the MB and adding the products from all food groups. The results of daily dietary intakes in this study were: Mg 174.8 and Mn 1.34 mg day -1 . Theses values were lower than the adequate intake (AI) proposed by the Food and Nutrition Board of the Institute of Medicine (USA National Academy) for adults. The low levels of Mg and Mn intakes presented in this TDS are probably due to the fact that MB of this study represented only 72 % of the weight of the most consumed household foods of Sao Paulo State. (author)

  19. Structural and optical properties of ZnMgO nanostructures formed by Mg in-diffused ZnO nanowires

    International Nuclear Information System (INIS)

    Pan, C.-J.; Hsu, H.-C.; Cheng, H.-M.; Wu, C.-Y.; Hsieh, W.-F.

    2007-01-01

    ZnMgO nanostructures with wurtzite phase were prepared by thermal diffusion of Mg into the ZnO nanowires. As ZnO light-emitting devices have been operated by using ZnMgO layers as energy barrier layers to confine the carriers, it is essential to realize the characterization of ZnMgO particularly. In this work, the Mg content in Zn 1 -x Mg x O alloy determined by X-ray diffraction (XRD) and photoluminescence (PL) shows a good coincidence. The variation of lattice constant and the blueshift of near-band-edge emission indicate that Zn 2+ ions are successfully substituted by Mg 2+ ions in the ZnO lattice. In Raman-scattering studies, the change of E 2 (high) phonon line shape in ZnO:Mg nanostructures reveals the microscopic substitutional disorder. In addition to the host phonons of ZnO, two additional bands around 383 and 510 cm -1 are presumably attributed to the Mg-related vibrational modes. - Graphical abstract: We reported the synthesis of the ZnMgO nanostructures prepared by a simple vapor transport method. Magnesium-related anomalous modes are observed by Raman spectra for the first time in ZnMgO system

  20. Mg concentration profile and its control in the low temperature grown Mg-doped GaN epilayer

    Science.gov (United States)

    Liu, S. T.; Yang, J.; Zhao, D. G.; Jiang, D. S.; Liang, F.; Chen, P.; Zhu, J. J.; Liu, Z. S.; Liu, W.; Xing, Y.; Zhang, L. Q.; Wang, W. J.; Li, M.; Zhang, Y. T.; Du, G. T.

    2018-01-01

    In this work, the Cp2Mg flux and growth pressure influence to Mg doping concentration and depth profiles is studied. From the SIMS measurement we found that a transition layer exists at the bottom region of the layer in which the Mg doping concentration changes gradually. The thickness of transition layer decreases with the increases of Mg doping concentration. Through analysis, we found that this is caused by Ga memory effect which the Ga atoms stay residual in MOCVD system will react with Mg source, leading a transition layer formation and improve the growth rate. And the Ga memory effect can be well suppressed by increasing Mg doping concentration and growth pressure and thus get a steep Mg doping at the bottom region of p type layer.

  1. Industrial production of MgH2 and its application

    International Nuclear Information System (INIS)

    Uesugi, H.; Sugiyama, T.; Nii, H.; Ito, T.; Nakatsugawa, I.

    2011-01-01

    Research highlights: → Tablet and powder Mg were hydrogenated in a 50 kg batch furnace based on thermal equilibrium method. → Compression of Mg tablet improved the hydrogenation yield. → Hydrolysis of MgH 2 using citric acid generated hydrogen under 373 K. → A MgH 2 -hydrogen reactor utilizing hydraulic head pressure was developed. → - Abstract: A process for the industrial production of magnesium hydride (MgH 2 ) based on a thermal equilibrium method and its application to portable hydrogen sources is proposed. Mg powders and tablets compressed with mechanically ground Mg ribbons were successfully hydrogenated in a 50-kg-batch furnace. The resultant MgH 2 showed a hydrogen yield of around 96% with good reproducibility. The compression ratio of Mg tablets was found to be an important factor in the hydrogenation yield. A hydrolysis technique using citric acid as an additive was employed to generate hydrogen under 373 K. Increasing the concentration of citric acid and the temperature accelerated the hydrolysis reactivity. A hydrogen reactor utilizing hydraulic head pressure was developed. It generated hydrogen continuously for 1 h at a flow rate of 100 ml min -1 with hydrolysis of 5 g of tablet-form MgH 2 . The conversion yield was around 70%, regardless of the flow rate.

  2. Corrosion behavior of Mg/graphene composite in aqueous electrolyte

    International Nuclear Information System (INIS)

    Selvam, M.; Saminathan, K.; Siva, P.; Saha, P.; Rajendran, V.

    2016-01-01

    In the present work, the electrochemical corrosion behavior of magnesium (Mg) and thin layer graphene coated Mg (Mg/graphene) are studied in different salt electrolyte such as NaCl, KCl and Na_2SO_4. The phase structure, crystallinity, and surface morphology of the samples are investigated using X-ray diffraction (XRD) analysis, scanning electron microscopy coupled with energy dispersive X-ray analysis (SEM/EDAX), and Raman spectroscopy techniques. The electrochemical corrosion behavior of the Mg and graphene coated Mg are also investigated using Electrochemical Impedance Spectroscopy (EIS) analysis. The tafel plot reveals that the corrosion of Mg drastically drops when coated with thin layer graphene (Mg/graphene) compared to Mg in KCl electrolyte. Moreover, the EIS confirms that Mg/graphene sample shows improve corrosion resistance and lower corrosion rate in KCl solution compare to all other electrolytes studied in the present system. - Highlights: • The corrosion behavior of magnesium alloy (AZ91) was investigated in three different electrolyte solution. • To study the anti-corrosion behavior of graphene coated with magnesium alloy. • To improve the corrosion resistance for magnesium alloy. • Nyquist plots confirms that MgG shows better corrosion resistance and lower corrosion rate in KCl solution.

  3. Corrosion behavior of Mg/graphene composite in aqueous electrolyte

    Energy Technology Data Exchange (ETDEWEB)

    Selvam, M. [Centre for Nano Science and Technology, KS Rangasamy College of Technology, Tiruchengode, 637215, Tamil Nadu (India); Saminathan, K., E-mail: ksaminath@gmail.com [Centre for Nano Science and Technology, KS Rangasamy College of Technology, Tiruchengode, 637215, Tamil Nadu (India); Siva, P. [Centre for Nano Science and Technology, KS Rangasamy College of Technology, Tiruchengode, 637215, Tamil Nadu (India); Saha, P. [Department of Ceramic Engineering, National Institute of Technology, Rourkela, India-769008 (India); Rajendran, V. [Centre for Nano Science and Technology, KS Rangasamy College of Technology, Tiruchengode, 637215, Tamil Nadu (India)

    2016-04-01

    In the present work, the electrochemical corrosion behavior of magnesium (Mg) and thin layer graphene coated Mg (Mg/graphene) are studied in different salt electrolyte such as NaCl, KCl and Na{sub 2}SO{sub 4}. The phase structure, crystallinity, and surface morphology of the samples are investigated using X-ray diffraction (XRD) analysis, scanning electron microscopy coupled with energy dispersive X-ray analysis (SEM/EDAX), and Raman spectroscopy techniques. The electrochemical corrosion behavior of the Mg and graphene coated Mg are also investigated using Electrochemical Impedance Spectroscopy (EIS) analysis. The tafel plot reveals that the corrosion of Mg drastically drops when coated with thin layer graphene (Mg/graphene) compared to Mg in KCl electrolyte. Moreover, the EIS confirms that Mg/graphene sample shows improve corrosion resistance and lower corrosion rate in KCl solution compare to all other electrolytes studied in the present system. - Highlights: • The corrosion behavior of magnesium alloy (AZ91) was investigated in three different electrolyte solution. • To study the anti-corrosion behavior of graphene coated with magnesium alloy. • To improve the corrosion resistance for magnesium alloy. • Nyquist plots confirms that MgG shows better corrosion resistance and lower corrosion rate in KCl solution.

  4. Low-energy radioactive ion beam production of 22Mg

    International Nuclear Information System (INIS)

    Duy, N.N.; Kubono, S.; Yamaguchi, H.; Kahl, D.; Wakabayashi, Y.; Teranishi, T.; Iwasa, N.; Kwon, Y.K.; Khiem, L.H.; Kim, Y.H.; Song, J.S.; Hu, J.; Ayyad, Y.

    2013-01-01

    The 22 Mg nucleus plays an important role in nuclear astrophysics, specially in the 22 Mg(α,p) 25 Al and proton capture 22 Mg(p,γ) 23 Al reactions. It is believed that 22 Mg is a waiting point in the αp-process of nucleosynthesis in novae. We proposed a direct measurement of the 22 Mg+α resonance reaction in inverse kinematics using a radioactive ion (RI) beam. A 22 Mg beam of 3.73 MeV/u was produced at CRIB (Center for Nuclear Study (CNS) low-energy RI Beam) facility of the University of Tokyo located at RIKEN (Japan) in 2011. In this paper we present the results about the production of the 22 Mg beam used for the direct measurement of the scattering reaction 22 Mg(α,α) 22 Mg, and the stellar reaction 22 Mg(α,p) 25 Al in the energy region concerning an astrophysical temperature of T 9 =1–3 GK

  5. The structural, electrical and optical properties of Mg-doped ZnO with different interstitial Mg concentration

    Energy Technology Data Exchange (ETDEWEB)

    Hu, Yonghong, E-mail: hchyh@njust.edu.cn [School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 (China); Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China); Zeng, Haibo [Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China); Du, Jifu [School of Nuclear Technology and Chemistry & Biology, Hubei University of Science and Technology, Xianning 437100 (China); Hu, Ziyu [Beijing Computational Science Research Center, Beijing 100084 (China); Zhang, Shengli [Institute of Optoelectronics & Nanomaterials, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094 (China)

    2016-10-01

    Through first principle calculations, we studied the structural, electronic and optical properties of ZnO doped by interstitial Mg. With the increase of Mg content (x), the derivations of lattice parameters from the wurtzite ZnO become more and more significant. The Mg-doped ZnO with x below 15.79% is found to be n-type semiconductor. The minimum of energy band gap and light transmittance in high energy region (7.5–25 eV) decrease while the conductivity and refractive index increase with increasing x. Further increasing x up to 20%, the Mg-doped ZnO is found to be direct-band-gap semiconductor with great structural derivation from wurtzite phase. The light transmittance increases while the refractive index decreases with the increase of x due to the change of geometry and electronic structure. So, it’s concluded that the electronic and optical properties of ZnO doped by interstitial Mg may be greatly influenced by Mg content. - Graphical abstract: The minimum of energy gap decreases while the corresponding relative number of electrons into the conduction bands increases when the interstitial Mg content x in Mg-doped ZnO increases (0 ≤ x ≤ 15.79%). - Highlights: • The energy band gap decreases with the increase of interstitial Mg content from 5.88% to 15.79%. • The conductivity increases with the increase of interstitial Mg content from 5.88% to 15.79%. • The Mg{sub x}Zn{sub 1-x}O (interstitial Mg content x= 20%) is found to be a direct-band-gap semiconductor. • The light transmittance decreases with the increase of interstitial Mg content from 5.88% to 15.79%. • The refractive index increases with the increase of interstitial Mg content from 5.88% to 15.79%.

  6. Adsorption of arginine, glycine and aspartic acid on Mg and Mg-based alloy surfaces: A first-principles study

    Science.gov (United States)

    Fang, Zhe; Wang, Jianfeng; Yang, Xiaofan; Sun, Qiang; Jia, Yu; Liu, Hairong; Xi, Tingfei; Guan, Shaokang

    2017-07-01

    Studying the adsorption behaviors of biomolecules on the surface of Mg and Mg-based alloy has a fundamental and important role for related applications in biotechnology. In the present work, we systematically investigate and compare the adsorption properties of three typical amino acids, i.e., Arg (arginine), Gly (glycine) and Asp (aspartic acid), which form RGD tripeptide, on the Mg (0 0 0 1) surface with various doping (Zn, Y, and Nd), and aim to realize proper binding between biomolecules and Mg and Mg-based biomedical materials. Our results show that flat adsorption configurations of the functional groups binding to the surfaces are favored in energy for all the three selected amino acids. In specific, for the amino acids adsorped on clean Mg (0 0 0 1) surface, the adsorption energy (Eads) of Arg is found to be -1.67 eV for the most stable configuration, with amino and guanidyl groups binding with the surface. However, Gly (Asp) is found to binding with the surface through amino and carboxyl groups, with a -1.16 eV (-1.15 eV) binding energy. On the 2% Zn doped Mg (0 0 0 1) alloy surface (Mg-Zn (2%)), the Eads are significantly increased to be -1.91 eV, -1.32 eV and -1.35 eV for Arg, Gly and Asp, respectively. While the Mg-Y (1%) and Mg-Nd (1%) slightly weaken the adsorption of three amino acids. Moreover, we have performed detail discussions of the binding properties between amino acids and surfaces by projected density of states (PDOS) combined with charge transfer analyses. Our studies provide a comprehensive understanding on the interactions between amino acids and Mg and Mg-based alloy surfaces, with respect to facilitate the applications of Mg and Mg-based biomedical alloys in biosensing, drug delivery, biomolecule coating and other fields in biotechnology.

  7. Arte, criatividade e desenvolvimento socioemocional de alunos com altas habilidades/ superdotação (AH/SD: considerações a partir de Vigotski

    Directory of Open Access Journals (Sweden)

    Cristiana Lopes Machado

    2017-08-01

    Full Text Available A educação de alunos com altas habilidades/superdotação (AH/SD é assegurada pela legislação em vigor que admite esse discente como sujeito de direito à educação especial (BRASIL, 1996; VIRGOLIM, 2012; PISKE, 2014b. Contudo, mesmo a educação especial constituindo-se como um direito, muitos desses alunos encontram-se em situação de exclusão escolar (FREITAS; REICH, 2015. Diante disso, o objetivo do presente estudo é investigar as implicações da arte e da criatividade para o desenvolvimento socioemocional de alunos com AH/SD no contexto inclusivo. Essa investigação se justifica na medida em que procura explicitar o potencial educativo das atividades artísticas e criativas. Este estudo possui caráter qualitativo e é de natureza exploratória. Para tanto, adotamos como instrumentos de coleta de dados a entrevista semiestruturada e a observação. Os participantes desse estudo foram 10 alunos identificados com AH/SD, estudantes da rede de ensino de um município no Estado do Paraná e frequentadores de Sala de Recursos Multifuncional. A partir da análise dos dados, baseada em Aguiar e Ozella (2006, foi possível perceber que a arte e a criatividade constituem-se como instrumentos que auxiliam esse discente a lidar com seu mundo interior, como também possibilitam oportunidades para o emprego do potencial criativo e inovador. Nesse sentido, o estudo aponta para a necessidade de revisão das práticas pedagógicas destinadas aos discentes com potencial superior, como também para a investigação de metodologias de ensino que integrem as atividades artísticas e criativas em suas práticas educacionais.

  8. The quest for stable circumbinary companions to post-common envelope sdB eclipsing binaries. Does the observational evidence support their existence?

    Science.gov (United States)

    Pulley, D.; Faillace, G.; Smith, D.; Watkins, A.; von Harrach, S.

    2018-03-01

    Context. Period variations have been detected in a number of eclipsing close compact binary subdwarf B stars (sdBs) and these have often been interpreted as being caused by circumbinary massive planets or brown dwarfs. According to canonical binary models, the majority of sdB systems are produced from low mass stars with degenerate cores where helium is ignited in flashes. Various evolutionary scenarios have been proposed for these stars, but a definite mechanism remains to be established. Equally puzzling is the formation of these putative circumbinary objects which must have formed from the remaining post-common envelope circumbinary disk or survived its evolution. Aim. In this paper we review the eclipse time variations (ETVs) exhibited by seven such systems (EC 10246-2707, HS 0705+6700, HS 2231+2441, J08205+0008, NSVS 07826147, NSVS 14256825, and NY Vir) and explore whether there is conclusive evidence that the ETVs observed over the last two decades can reliably predict the presence of one or more circumbinary bodies. Methods: We report 246 new observations of the seven sdB systems made between 2013 September and 2017 July using a worldwide network of telescopes. We combined our new data with previously published measurements to analyse the ETVs of these systems. Results: Our data show that period variations cannot be modelled simply on the basis of circumbinary objects. This implies that more complex processes may be taking place in these systems. These difficulties are compounded by the secondary star not being spectroscopically visible. From ETVs, it has historically been suggested that five of the seven binary systems reported here had circumbinary objects. Based on our recent observations and analysis, only three systems remain serious contenders. We find agreement with other observers that at least a decade of observations is required to establish reliable ephemerides. With longer observational baselines it is quite conceivable that the data will support

  9. Desenvolvimento dos frutos de lulo (Solanum quitoense LAM, em Viçosa-MG

    Directory of Open Access Journals (Sweden)

    Pedro Henrique Monteiro Matarazzo

    2013-03-01

    Full Text Available O lulo é um fruto tropical e exótico, originário dos Andes, tem cor laranja quando maduro, e é uma baga globosa, assemelha- se a um tomate, o epicarpo é grosso e coriáceo, sua polpa é verde-clara, pegajosa, ácida e suculenta, contendo muitas sementes. Objetivou-se acompanhar as características físicas, químicas e fisiológicas ocorridas durante o desenvolvimento do fruto de lulo, da antese ao amadurecimento completo, em Viçosa-MG. Os frutos apresentaram um padrão de crescimento sigmoidal simples em resposta à variação do tempo. O desenvolvimento do fruto foi dividido em três fases. A primeira foi até os 7,39 dias após a antese (DAA, sendo caracterizada pela alta taxa respiratória, provavelmente devido à intensa multiplicação celular, e o pericarpo apresentava coloração verde-clara. A segunda fase estendeu-se a partir dos 7,39 até os 57,63 DAA, sendo caracterizada pelas taxas máximas das características estudadas. A taxa respiratória cresceu até 45 DAA, mantendo-se estável até os 52 DAA. A última fase estendeu-se a partir dos 57,63 DAA até os 95,00 DAA. Essa fase foi caracterizada pela estabilização nas dimensões e no acúmulo de massa fresca. Nesse período, ocorreu a ascensão climatérica (dos 52 aos 59 DAA. O climatério respiratório ocorreu aos 66 DAA, com pico de produção de CO2 de 110,99 mg de CO2 kg-1h-1. O pós-climatério ocorreu dos 73 aos 95 DAA, quando houve aumento no teor de sólidos solúveis e queda da acidez titulável e vitamina C da polpa. Nessa fase, o pericarpo dos frutos apresentava-se com coloração alaranjada.

  10. Corrosion properties of the Mg alloy coated with polypyrrole films

    International Nuclear Information System (INIS)

    Grubač, Zoran; Rončević, Ivana Škugor; Metikoš-Huković, Mirjana

    2016-01-01

    Highlights: • Electropolymerization of pyrrole on Mg-alloy surface in presence of salicylate. • Salicylate dual role in PPy deposition: passivation and electron transfer mediation. • Redox potential of salicylate corresponds to potential of PPy nucleation. • EIS and polarization corrosion studies of PPy coated Mg-alloy in Hanks’ solution. • Polypyrrole significantly slowdown Mg alloy corrosion in Hanks’ solution. - Abstract: In the present study the reactive surface of Mg alloy was coated with the nontoxic biocompatible polypyrrole (PPy) film synthesized by electrochemical oxidation from an aqueous salicylate solution. Salicylate ions prevent Mg dissolution and act as an electron transfer mediator during the PPy film nucleation, formation and growth on the alloy surface. Kinetics of the pyrrole polymerization as well as corrosion resistance of the PPy coated Mg alloy in the Hanks’ solution were investigated using dc electrochemical methods and electrochemical impedance spectroscopy (EIS). Characterization of the surface film was performed by optical and Fourier transform infrared spectroscopy (FTIR).

  11. Thermoelectric properties and microstructure of Mg3Sb2

    International Nuclear Information System (INIS)

    Condron, Cathie L.; Kauzlarich, Susan M.; Gascoin, Franck; Snyder, G. Jeffrey

    2006-01-01

    Mg 3 Sb 2 has been prepared by direct reaction of the elements. Powder X-ray diffraction, thermal gravimetric, differential scanning calorimetery, and microprobe data were obtained on hot pressed samples. Single phase samples of Mg 3 Sb 2 were prepared and found to contain oxygen at the grain boundaries and to lose Mg and oxidize at temperatures above 900 K. Thermoelectric properties were characterized by Seebeck, electrical resistivity, and thermal conductivity measurements from 300 to 1023 K, and the maximum zT was found to be 0.21 at ∼875 K. - Graphical abstract: Dimensionless figure of merit for Mg 3 Sb 2 hot pressed and sintered at 873 K. The inset illustrates the crystal structure of Mg 3 Sb 2 along the [100] direction (white=Mg, black=Sb)

  12. PENGEMBANGAN MODUL PEMBELAJARAN SAINS BERBASIS INTEGRASI ISLAM-SAINS UNTUK PESERTA DIDIK DIFABEL NETRA MI/SD KELAS 5 SEMESTER 2 MATERI POKOK BUMI DAN ALAM SEMESTA

    Directory of Open Access Journals (Sweden)

    F. Yuliawati

    2013-10-01

    Full Text Available Tujuan penelitian untuk menghasilkan modul pembelajaran sains Madrasah Ibtidaiyah untuk peserta didik difabel netra berbasis integrasi Islam-sains yang memiliki karakter tertentu. Penelitian ini merupakan penelitian pengembangan. Modul pembelajaran yang telah dikembangkan mendapatkan penilaian baik menurut penilaian ahli media, pendidik SD dan SLB, dengan persentase keidealan 74,31%. Berdasarkan hal tersebut, modul Braille ini layak digunakan peserta didik sebagai media belajar mandiri dalam melaksanakan pembelajaran sains. For research purposes is to produce science learning modules Madrasah Ibtidaiyah for learners with disabilities blind Islam-science-based integration with certain characteristics. This research is development research. Learning modules that have been developed to get good ratings according to media expert assessment, elementary and special educators, with a percentage of 74.31% ideals. Based on this, the Braille module learners fit for use as a medium of self study in implementing science lessons.

  13. Correlação entre a Autofluorescência de Fundo e o SD-OCT na Degenerescência Macular Ligada à Idade Exsudativa

    OpenAIRE

    Miranda, Ana Filipa

    2016-01-01

    Introdução: Estudos têm mostrado que na degenerescência macular ligada à idade (DMLI) exsudativa uma maior área de alteração do epitélio pigmentar retiniano (EPR) na autofluorescência de fundo (FAF) está associada a perda da acuidade visual (AV). Não existe, no entanto, nenhum estudo realizado nestes doentes que integre as alterações verificadas na FAF com a informação anatómica da tomografia de coerência óptica spectral domain (SD-OCT). Objectivo: Investigar a correlação entre a FAF e os res...

  14. [Effect of total flavones from Cuscuta chinensis on expression of Fas/FasL, PCNA and HB-EGF in SD rats model with bromocriptine-induced abortion].

    Science.gov (United States)

    Ma, Hong-Xia; You, Zhao-Ling; Wang, Xiao-Yun

    2008-11-01

    To explore the effect of total flavones from cuscuta chinensis (TFCC) on expression of Fas, PCNA and HB-EGF in SD rats model with bromocriptine-induced abortion. The model rats of bromocriptine during 6-8 d of pregnancy induced early abortion was established, adopting respectively herbs in high and low dosage and progesterone affect model rat and after 12 d, Immunohistochemical was applied to determine Fas, HB-EGF and PCNA in deciduas and placenta. Expression of PCNA on trophoblast and deciduas, HB-EGF on trophoblast, PR on deciduas in the model used Semen cuscutae flavonoid, proesterone and normal pregnacy, were significantlly higher than those of the pure model. Expression of Fas on trophoblast and deciduas in above four groups, were significantlly lower than those of the pure model. There were no expression of HB-EGF on deciduas. TFCC regulates the proliferation and apoptosis of the deciduas and cytotrophoblasts and prevents spontaneous abortions.

  15. Penerapan Metode Think Pair Share untuk Meningkatkan Prestasi Belajar Materi Peran Serta dalam Pemilihan Organisasi di Sekolah pada Siswa Kelas V SD

    Directory of Open Access Journals (Sweden)

    Mestiyah

    2018-02-01

    Full Text Available Berdasarkan hasil observasi yang dilakukan di Kelas VA pada waktu pembelajaran Pendidikan Kewarganegaraan diperoleh hasil bahwa Prestasi belajar siswa kurang memuaskan, yaitu dari 24 siswa hanya 10 siswa yang nilainya dapat mencapai KKM atau ≥ 70, sedangkan 14 siswa lainnya masih belum dapat mencapai KKM atau ≤ 69. Hal ini disebabkan karena guru kurang memberikan penekanan materi yang jelas tentang Peran serta dalam pemilihan organisasi di sekolah. Untuk itu agar dapat meningkatkan prestasi belajar siswa dalam menyelesaikan soal tentang Peran serta dalam pemilihan organisasi di sekolah serta untuk tercapainya tujuan pembelajaran perlu diadakan perbaikan pembelajaran dengan menerapkan Metode Think Pair Share. Penerapan pembelajaran Peran serta dalam pemilihan organisasi di sekolah melalui Metode Think Pair Share dapat meningkatkan Prestasi belajar siswa Kelas VA SD Negeri 2 Banyuurip Kalidawir Tulungagung

  16. Mechanical properties of fractures from drillholes, UE25-NRG-4; USW-NRG-6; USW-NRG-7; USW-SD-9, at Yucca Mountain, Nevada

    International Nuclear Information System (INIS)

    Olsson, W.A.; Brown, S.R.

    1997-01-01

    Rock cores from drillholes UE25-NRG-4, USW-NRG-6, USW-NRG-7, and USW-SD-9 containing natural fractures were obtained from the Sample Management Facility at Yucca Mountain, Nevada. All recoverable fractures were sheared at constant normal stresses from 2.5 to 15 MPa, in the as-received condition (air-dry). Detailed profilometer data were collected from each fracture surface before testing. The tests yielded the normal closure as a function of normal stress, and the shear stress and dilation as functions of shear offset. The constitutive properties obtained from these stress-displacement relations were: normal stiffness, shear stiffness, shear strength, and dilation angle at peak shear stress. Shear strength plotted against normal stress for four thermomechanical units shows that friction angle varies from 370 to 460 and cohesion varies from 0.02 to 1.71 MPa

  17. Gangguan Perhatian/ Inatensi pada Anak (Studi Kasus pada Siswa Kelas Bawah di SD IT Cahaya Bangsa Semarang pada Tahun Ajaran (2014/2015

    Directory of Open Access Journals (Sweden)

    Fitri Kusuma Sari

    2015-04-01

    Full Text Available Gangguan perhatian sangat mengganggu perkembangan anak dalam aspek sosial, belajar dan pribadi. Faktor keluarga memiliki pengaruh yang sangat tinggi terhadap perkembangan gangguan perhatian pada anak. Sehingga penelitian ini ingin mengetahui tingkat gangguan perhatian dan pengaruh faktor keluarga terhadap gangguan perhatian yang dialami anak. Sejalan dengan tujuan dari penelitian ini untuk mengetahui tingkat gangguan perhatian dan pengaruh faktor keluarga pada siswa kelas bawah SD IT Cahaya Bangsa Semarang. Skala penilaian digunakan untuk mengukur tingkat gangguan perhatian keempat subjek dan wawancara diberikan kepada subjek, wali kelas, teman dan orang tua subjek untuk memperoleh data pengaruh faktor keluarga. Analisis data menggunakan analisis deskriptif presentase dan analisis deskriptif studi kasus. Ditemukan bahwa tingkat gangguan perhatian pada keempat subjek tinggi dan faktor keluarga sangat mempengaruhinya. Faktor keluarga yang sangat berpengaruh adalah pola asuh orang tua yang cenderung kepada pola asuh permisif dan pola asuh otoriter. Inattention is very disturbing of child development in sosial, learning and personal aspect. Family factors have a very high influence on the development of inattention in children. Therefore, this research would like to know the level of inattention and the influence of femily factors on inattention experienced by children. In line with the objectives of this study to determine the level of inattention and the influence of family factors on the lower grade student SD IT Cahaya Bangsa Semarang. Rating scale used to measure the level of the fourth subject of inattention and interviews given to the subject,homeroom, friends and the parents to obtain the data subject influence of family factors. Data analysis using descriptive analysis and the percentage of descriptive analysis of case studies. It was found that the level of inattention in the fourth subject is very high and the family factors is

  18. Senam Otak (Brain Gym Berpengaruh Terhadap Tingkat Stres pada Anak Usia Sekolah Kelas V di SD Negeri Pokoh 1 Wedomartani Ngemplak Sleman Yogyakarta

    Directory of Open Access Journals (Sweden)

    Yunita Dikir

    2016-07-01

    Full Text Available Learning activities may cause excessive stress IN children. 82.8% of the causes of stress in children in Indonesian are from their very tight routine. Data of the National Commission for Children Protection show an average of 200 cases per month which increases 28%. Brain gym is used as one of the activities to address the issue of stress in children and to improve memory. This research is aimed at identifying the effect of brain gym on stress levels in school-age children of fifth grade at SD Negeri Pokoh 1 Wedomartani Ngemplak Sleman Yogyakarta. This research is a quasi-experimental research with one-group pre and post-test design. The subjects of the research were all fifth grade students at SD Negeri Pokoh 1 Wedomartani Ngemplak Sleman Yogyakarta in 2014, numbering 36 students. Sampling employed a total sampling and data were analyzed using the wilcoxon test. The results showed that the stress level of children before the brain gym given was mostly in the moderate category (50.0% and after the brain gym given was mostly in the normal category (75.0%. The statistical test using the wilcoxon test generated p-value of 0.000 <0.05. Conclusion, there was a significant effect of brain gym on stress levels before and after treatment in the fifth grade students at SD Negeri Pokoh 1 Wedomartani Ngemplak Sleman Yogyakarta.

  19. Selection and Validation of Reference Genes for Quantitative Real-Time PCR Normalization Under Ethanol Stress Conditions in Oenococcus oeni SD-2a

    Directory of Open Access Journals (Sweden)

    Shuai Peng

    2018-05-01

    Full Text Available The powerful Quantitative real-time PCR (RT-qPCR was widely used to assess gene expression levels, which requires the optimal reference genes used for normalization. Oenococcus oeni (O. oeni, as the one of most important microorganisms in wine industry and the most resistant lactic acid bacteria (LAB species to ethanol, has not been investigated regarding the selection of stable reference genes for RT-qPCR normalization under ethanol stress conditions. In this study, nine candidate reference genes (proC, dnaG, rpoA, ldhD, ddlA, rrs, gyrA, gyrB, and dpoIII were analyzed to determine the most stable reference genes for RT-qPCR in O. oeni SD-2a under different ethanol stress conditions (8, 12, and 16% (v/v ethanol. The transcript stabilities of these genes were evaluated using the algorithms geNorm, NormFinder, and BestKeeper. The results showed that dnaG and dpoIII were selected as the best reference genes across all experimental ethanol conditions. Considering single stress experimental modes, dpoIII and dnaG would be suitable to normalize expression level for 8% ethanol shock treatment, while the combination of gyrA, gyrB, and rrs would be suitable for 12% ethanol shock treatment. proC and gyrB revealed the most stable expression in 16% ethanol shock treatment. This study selected and validated for the first time the reference genes for RT-qPCR normalization in O. oeni SD-2a under ethanol stress conditions.

  20. A high resolution atlas of Mg II profiles

    Science.gov (United States)

    Ewald, R.; Nichols-Bohlin, Joy Y.; Kondo, Yoji

    1990-01-01

    An atlas of high dispersion Mg II profiles for standard stars of spectral types B0 through G9 is presented. The atlas contains plots of the Mg II profiles for approximately 65 stars and associated equivalent width measurements for both absorption and emission components, and the subordinate lines. The atlas is used to investigate systematic behavior of the Mg II profiles and correlation of the behavior with spectral classification.

  1. MgO nanoparticles as antibacterial agent: preparation and activity

    Energy Technology Data Exchange (ETDEWEB)

    Tang, Zhen-Xing, E-mail: tangzhenxing@126.com [Department of Food Science, Anqing, Vocational and Technical College, Anqing, Anhui (China); Lv, Bin-Feng [Date Palm Research Center, King Faisal University, (Saudi Arabia)

    2014-07-15

    Bacterial pollution is a great risk for human health. Nanotechnology offers a way to develop new inorganic antibacterial agents. Nano-inorganic metal oxide has a potential to reduce bacterial contamination. MgO is an important inorganic oxide and has been widely used in many fields. Many studies have shown that MgO nanoparticles have good antibacterial activity. Therefore, in this paper, the main synthesis methods, antibacterial activity and antibacterial mechanisms of MgO nanoparticles are reviewed. (author)

  2. MgO nanoparticles as antibacterial agent: preparation and activity

    International Nuclear Information System (INIS)

    Tang, Zhen-Xing; Lv, Bin-Feng

    2014-01-01

    Bacterial pollution is a great risk for human health. Nanotechnology offers a way to develop new inorganic antibacterial agents. Nano-inorganic metal oxide has a potential to reduce bacterial contamination. MgO is an important inorganic oxide and has been widely used in many fields. Many studies have shown that MgO nanoparticles have good antibacterial activity. Therefore, in this paper, the main synthesis methods, antibacterial activity and antibacterial mechanisms of MgO nanoparticles are reviewed. (author)

  3. Effect of amorphous Mg50Ni50 on hydriding and dehydriding behavior of Mg2Ni alloy

    International Nuclear Information System (INIS)

    Guzman, D.; Ordonez, S.; Fernandez, J.F.; Sanchez, C.; Serafini, D.; Rojas, P.A.; Aguilar, C.; Tapia, P.

    2011-01-01

    Composite Mg 2 Ni (25 wt.%) amorphous Mg 50 Ni 50 was prepared by mechanical milling starting with nanocrystalline Mg 2 Ni and amorphous Mg 50 Ni 50 powders, by using a SPEX 8000 D mill. The morphological and microstructural characterization of the powders was performed via scanning electron microscopy and X-ray diffraction. The hydriding characterization of the composite was performed via a solid gas reaction method in a Sievert's-type apparatus at 363 K under an initial hydrogen pressure of 2 MPa. The dehydriding behavior was studied by differential thermogravimetry. On the basis of the results, it is possible to conclude that amorphous Mg 50 Ni 50 improved the hydriding and dehydriding kinetics of Mg 2 Ni alloy upon cycling. A tentative rationalization of experimental observations is proposed. - Research Highlights: → First study of the hydriding behavior of composite Mg 2 Ni (25 wt.%) amorphous Mg 50 Ni 50 . → Microstructural characterization of composite material using XRD and SEM was obtained. → An improved effect of Mg 50 Ni 50 on the Mg 2 Ni hydriding behavior was verified. → The apparent activation energy for the hydrogen desorption of composite was obtained.

  4. Lattice stability and formation energies of intrinsic defects in Mg2Si and Mg2Ge via first principles simulations

    International Nuclear Information System (INIS)

    Jund, Philippe; Viennois, Romain; Tédenac, Jean-Claude; Colinet, Catherine; Hug, Gilles; Fèvre, Mathieu

    2013-01-01

    We report an ab initio study of the semiconducting Mg 2 X (with X = Si, Ge) compounds and in particular we analyze the formation energies of the different point defects with the aim of understanding the intrinsic doping mechanisms. We find that the formation energy of Mg 2 Ge is 50% larger than that of Mg 2 Si, in agreement with the experimental tendency. From a study of the stability and the electronic properties of the most stable defects, taking into account the growth conditions, we show that the main cause of the n doping in these materials comes from interstitial magnesium defects. Conversely, since other defects acting like acceptors such as Mg vacancies or multivacancies are more stable in Mg 2 Ge than in Mg 2 Si, this explains why Mg 2 Ge can be of n or p type, in contrast to Mg 2 Si. The finding that the most stable defects are different in Mg 2 Si and Mg 2 Ge and depend on the growth conditions is important and must be taken into account in the search for the optimal doping to improve the thermoelectric properties of these materials.

  5. Hydrodechlorination of Tetrachloromethane over Palladium Catalysts Supported on Mixed MgF2-MgO Carriers

    Directory of Open Access Journals (Sweden)

    Magdalena Bonarowska

    2016-11-01

    Full Text Available Pd/MgO, Pd/MgF2 and Pd/MgO-MgF2 catalysts were investigated in the reaction of CCl4 hydrodechlorination. All the catalysts deactivated in time on stream, but the degree of deactivation varied from catalyst to catalyst. The MgF2-supported palladium with relatively large metal particles appeared the best catalyst, characterized by good activity and selectivity to C2-C5 hydrocarbons. Investigation of post-reaction catalyst samples allowed to find several details associated with the working state of hydrodechlorination catalysts. The role of support acidity was quite complex. On the one hand, a definite, although not very high Lewis acidity of MgF2 is beneficial for shaping high activity of palladium catalysts. The MgO-MgF2 support characterized by stronger Lewis acidity than MgF2 contributes to very good catalytic activity for a relatively long reaction period (~5 h but subsequent neutralization of stronger acid centers (by coking eliminates them from the catalyst. On the other hand, the role of acidity evolution, which takes place when basic supports (like MgO are chlorided during HdCl reactions, is difficult to assess because different events associated with distribution of chlorided support species, leading to partial or even full blocking of the surface of palladium, which plays the role of active component in HdCl reactions.

  6. Enhanced voltage-controlled magnetic anisotropy in magnetic tunnel junctions with an MgO/PZT/MgO tunnel barrier

    Science.gov (United States)

    Chien, Diana; Li, Xiang; Wong, Kin; Zurbuchen, Mark A.; Robbennolt, Shauna; Yu, Guoqiang; Tolbert, Sarah; Kioussis, Nicholas; Khalili Amiri, Pedram; Wang, Kang L.; Chang, Jane P.

    2016-03-01

    Compared with current-controlled magnetization switching in a perpendicular magnetic tunnel junction (MTJ), electric field- or voltage-induced magnetization switching reduces the writing energy of the memory cell, which also results in increased memory density. In this work, an ultra-thin PZT film with high dielectric constant was integrated into the tunneling oxide layer to enhance the voltage-controlled magnetic anisotropy (VCMA) effect. The growth of MTJ stacks with an MgO/PZT/MgO tunnel barrier was performed using a combination of sputtering and atomic layer deposition techniques. The fabricated MTJs with the MgO/PZT/MgO barrier demonstrate a VCMA coefficient, which is ˜40% higher (19.8 ± 1.3 fJ/V m) than the control sample MTJs with an MgO barrier (14.3 ± 2.7 fJ/V m). The MTJs with the MgO/PZT/MgO barrier also possess a sizeable tunneling magnetoresistance (TMR) of more than 50% at room temperature, comparable to the control MTJs with an MgO barrier. The TMR and enhanced VCMA effect demonstrated simultaneously in this work make the MgO/PZT/MgO barrier-based MTJs potential candidates for future voltage-controlled, ultralow-power, and high-density magnetic random access memory devices.

  7. Comparing the Electrochemical Performance of LiFePO4/C Modified by Mg Doping and MgO Coating

    Directory of Open Access Journals (Sweden)

    Jianjun Song

    2013-01-01

    Full Text Available Supervalent cation doping and metal oxide coating are the most efficacious and popular methods to optimize the property of LiFePO4 lithium battery material. Mg-doped and MgO-coated LiFePO4/C were synthesized to analyze their individual influence on the electrochemical performance of active material. The specific capacity and rate capability of LiFePO4/C are improved by both MgO coating and Mg doping, especially the Mg-doped sample—Li0.985Mg0.015FePO4/C, whose discharge capacity is up to 163 mAh g−1, 145.5 mAh g−1, 128.3 mAh g−1, and 103.7 mAh g−1 at 1 C, 2 C, 5 C, and 10 C, respectively. The cyclic life of electrode is obviously increased by MgO surface modification, and the discharge capacity retention rate of sample LiFePO4/C-MgO2.5 is up to 104.2% after 100 cycles. Comparing samples modified by these two methods, Mg doping is more prominent on prompting the capacity and rate capability of LiFePO4, while MgO coating is superior in terms of improving cyclic performance.

  8. Effect of sterilization process on surface characteristics and biocompatibility of pure Mg and MgCa alloys

    International Nuclear Information System (INIS)

    Liu, X.L.; Zhou, W.R.; Wu, Y.H.; Cheng, Y.; Zheng, Y.F.

    2013-01-01

    The aim of this work was to investigate the effect of various sterilization methods on surface characteristics and biocompatibility of MgCa alloy, with pure Mg as a comparison, including steam autoclave sterilization (SA), ethylene oxide steam sterilization (EO), glutaraldehyde sterilization (GD), dry heat sterilization (DH) and Co60 γ ray radiation sterilization (R) technologies. The surface characterizations were pe