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Sample records for cem t-lymphoblastoid human

  1. Effects of maglev-spectrum magnetic field exposure on CEM T-lymphoblastoid human cell growth and differentiation

    Energy Technology Data Exchange (ETDEWEB)

    Groh, K.R.; Chubb, C.B.; Collart, F.R.; Huberman, E.

    1992-01-01

    Exposure to magnetic fields similar to those produced by maglev vehicles (combined ac and dc components) was studied for the ability to alter cell growth and chemically induced cellular differentiation processes in cultured human CEM Tlymphoblastoid leukemia cells. A series of continuous and intermittent magnetic field (MF) exposures for varying lengths of time were tested at intensities up to 7-fold greater than that produced by the German TR07 maglev vehicle. Phorbol 12-myristate 13-acetate or mycophenolic acid were used to induce cell differentiation. Changes in cell number, morphology, and fluorescence expression of antigenic markers of differentiation were monitored. The results indicated that maglev-spectrum magnetic field exposures up to 2 gauss had little effect on culture growth or chemically induced cellular differentiation when exposed to maglev-spectrum magnetic fields compared to chemically treated but MF-unexposed controls.

  2. A novel HIV-1 restriction factor that is biologically distinct from APOBEC3 cytidine deaminases in a human T cell line CEM.NKR

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    Zhou Tao

    2009-04-01

    Full Text Available Abstract Background Isolation of novel retroviral restriction factors will open new avenues for anti-HIV/AIDS treatment. Although HIV-1 replication is restricted by APOBEC3G/APOBEC3F, TRIM5α, and CD317, none defend HIV-1 infection under natural conditions. Previously, we demonstrated a host factor from the human T cell line CEM.NKR that potently restricted wild-type HIV-1 replication. Interestingly, this restriction resembled the APOBEC3G/APOBEC3F pattern in that viral replication was inhibited from the second round of replication cycle at a post-entry step. Results Here, we further characterized this factor and found it distinguishable from the known anti-HIV APOBEC3 proteins. Although CEM.NKR cells expressed both APOBEC3G and APOBEC3F, their levels were at least 10 or 4-fold lower than those in H9 cells, and importantly, Vif effectively neutralized their activity. Among eight subclones isolated from CEM.NKR cells, one was relatively permissive, four were semi-permissive, and three were completely non-permissive for HIV-1 replication. When the levels of APOBEC3 expression were determined, all these clones retained similar low levels of APOBEC3DE, APOBEC3F, APOBEC3G and APOBEC3H expression, and no APOBEC3B expression was detected. Since the vif from SIVmac can effectively neutralize APOBEC3B and APOBEC3H, recombinant HIV-1 expressing this SIV gene were created. However, these viruses still failed to replicate in CEM.NKR cells. We also confirmed that HIV-1 restriction in CEM.NKR was not due to a loss of calnexin expression. Conclusion Taken together, these results not only demonstrate that all these aforementioned anti-HIV APOBEC3 proteins do not contribute to this HIV-1 restriction, but also shed light on a novel and potent HIV-1 inhibitor in CEM.NKR cells.

  3. Differentially expressed nuclear proteins in human CCRF-CEM, HL-60, MEC-1 and Raji cells correlate with cellular properties.

    Science.gov (United States)

    Henrich, Silke; Crossett, Ben; Christopherson, Richard I

    2007-10-01

    The human cell lines CCRF-CEM (T-cell acute lymphocytic leukemia), HL-60 (acute myeloid leukemia), MEC-1 (B-cell chronic lymphocytic leukemia) and Raji (Burkitt's B-cell lymphoma) have been analysed for differences in their nuclear proteomes. Using 2-D DIGE, 55 nuclear proteins have been identified that are differentially expressed (p<0.025) between the four cell lines, including proteins associated with transcription, proliferation, DNA repair and apoptosis. Of these 55 proteins, 22 were over-expressed in just one cell line, and four were down-regulated in one cell line. Proteins uniquely over-expressed between myeloid and lymphoid cell lines include those that may have use as markers for diagnosis, disease progression and B-cell maturation and differentiation. Expression of various proliferation-associated nuclear proteins correlated with relative growth rates of the cell lines, giving these proteins potential diagnostic applications for distinction of chronic versus acute subtypes of haematological malignancies. Identification of these differentially expressed nuclear proteins should facilitate elucidation of the molecular mechanisms underlying leukocyte differentiation and transformation to leukemias and lymphomas. The nuclear expression profiles should enable classification of subtypes of leukemia, and identify potential nuclear protein targets for development of diagnostic and therapeutic strategies.

  4. MERCURY CEMS: TECHNOLOGY UPDATE

    Science.gov (United States)

    The paper reviews the technologies involved with continuous emission monitors (CEMs) for mercury (Hg) which are receiving incresed attention and focus. Their potential use as a compliance assurance tool is of particular interest. While Hg CEMs are currently used in Europe for com...

  5. Textural Analysis of Nuclear Mitotic Apparatus Antigen (NuMA Spatial Distribution in Interphase Nuclei from Human Drug-Resistant CEM Lymphoblasts

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    Naima Rafki‐Beljebbar

    1999-01-01

    Full Text Available In tumour cell lines, the resistance of cancer cells to a variety of structurally unrelated chemotherapeutic drugs is termed multidrug‐resistance or MDR. We reported previously that MDR leukemic cells displayed nuclear texture changes, as assessed by image cytometry. The nature of these changes remained uncertain but they could be associated with alterations of the nuclear matrix which could serve an important role in DNA organization and chromatin structure. Therefore, we have compared the textural features observed in G0/G1 nuclei from human leukemic CEM cells and their MDR variant CEM‐VLB, after staining of either DNA by Feulgen method or nuclear matrix by immunodetection of NuMA antigen on DNase treated samples. Chromatin or NuMA distributions within the nucleus were evaluated by image cytometry. Changes in textural parameters indicate that modifications of NuMA distribution observed in MDR cells are parallel to those observed at the whole chromatin level (i.e., a more decondensed and coarse texture with increase of Energy and Long‐run sections and decrease of Contrast and Short‐run sections. Moreover, Optical Densities measurements indicate that MDR cells seem to contain less NuMA, a datum confirmed by immunoblotting of nuclear proteins. In conclusion, chromatin changes observed by image cytometry in drug‐resistant human leukemic CEM cells appear associated with modifications of the nuclear matrix structure.

  6. Comparative study of DNA damage, cell cycle and apoptosis in human K562 and CCRF-CEM leukemia cells: role of BCR/ABL in therapeutic resistance.

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    Pytel, Dariusz; Wysocki, Tomasz; Majsterek, Ireneusz

    2006-09-01

    The Philadelphia translocation t(9;22) resulting in the bcr/abl fusion gene is the pathogenic principle of almost 95% of human chronic myelogenous leukemia (CML). Imatinib mesylate (STI571) is a specific inhibitor of the BCR/ABL fusion tyrosine kinase that exhibits potent antileukemic effects in CML. BCR/ABL-positive K562 and -negative CCRF-CEM human leukemia cells were investigated. MTT survival assay and clonogenic test of the cell proliferation ability were used to estimate resistance against idarubicin. DNA damage after cell treatment with the drug at the concentrations from 0.001 to 3 microM with or without STI571 pre-treatment were examined by the alkaline comet assay. We found that the level of DNA damages was lower in K562 cells after STI571 pre-treatment. It is suggested that BCR/ABL activity may promote genomic instability, moreover K562 cells were found to be resistant to the drug treatment. Further, we provided evidence of apoptosis inhibition in BCR/ABL-positive cells using caspase-3 activity colorimetric assay and DAPI nuclear staining for chromatin condensation. We suggest that these processes associated with cell cycle arrest in G2/M checkpoint detected in K562 BCR/ABL-positive compared to CCRF-CEM cells without BCR/ABL expression might promote clone selection resistance to drug treatment.

  7. Mercury CEM Calibration

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    John Schabron; Joseph Rovani; Mark Sanderson

    2008-02-29

    Mercury continuous emissions monitoring systems (CEMS) are being implemented in over 800 coal-fired power plant stacks. The power industry desires to conduct at least a full year of monitoring before the formal monitoring and reporting requirement begins on January 1, 2009. It is important for the industry to have available reliable, turnkey equipment from CEM vendors. Western Research Institute (WRI) is working closely with the Electric Power Research Institute (EPRI), the National Institute of Standards and Technology (NIST), and the Environmental Protection Agency (EPA) to facilitate the development of the experimental criteria for a NIST traceability protocol for dynamic elemental mercury vapor generators. The generators are used to calibrate mercury CEMs at power plant sites. The Clean Air Mercury Rule (CAMR) which was published in the Federal Register on May 18, 2005 requires that calibration be performed with NIST-traceable standards (Federal Register 2007). Traceability procedures will be defined by EPA. An initial draft traceability protocol was issued by EPA in May 2007 for comment. In August 2007, EPA issued an interim traceability protocol for elemental mercury generators (EPA 2007). The protocol is based on the actual analysis of the output of each calibration unit at several concentration levels ranging initially from about 2-40 {micro}g/m{sup 3} elemental mercury, and in the future down to 0.2 {micro}g/m{sup 3}, and this analysis will be directly traceable to analyses by NIST. The document is divided into two separate sections. The first deals with the qualification of generators by the vendors for use in mercury CEM calibration. The second describes the procedure that the vendors must use to certify the generator models that meet the qualification specifications. The NIST traceable certification is performance based, traceable to analysis using isotope dilution inductively coupled plasma/mass spectrometry performed by NIST in Gaithersburg, MD. The

  8. A novel sensitive sheathless CE-MS device for peptide and protein analysis

    DEFF Research Database (Denmark)

    Nguyen, Tam T. T. N.; Petersen, Nickolaj J.; Rand, Kasper Dyrberg

    Introduction CE-MS has shown considerable potential in protein research and pharmaceutical development, however, technical challenges of hyphenation of CE with MS have limited its use. Here, we have developed a sensitive CE-MS setup for peptide and protein analysis, that employs a novel and low......-cost sheathless CE-MS interface and a poly(ethyleneglycol)-coated capillary. Using the CE-MS setup, we have achieved fast and efficient separation and sensitive mass analysis of individual components of a complex sample of pharmaceutically relevant human proteins including insulin, tissue factor, α......-synuclein and a tryptic digest of bovine serum albumin. We have furthermore compared the performance of the CE-MS technique to UPLC-MS and demonstrate significant advantages of the CE-MS setup in terms of analysis time, sample consumption and separation capacity. Methods The sheathless CE-MS interface is based...

  9. Mercury CEM Calibration

    Energy Technology Data Exchange (ETDEWEB)

    John F. Schabron; Joseph F. Rovani; Susan S. Sorini

    2007-03-31

    The Clean Air Mercury Rule (CAMR) which was published in the Federal Register on May 18, 2005, requires that calibration of mercury continuous emissions monitors (CEMs) be performed with NIST-traceable standards. Western Research Institute (WRI) is working closely with the Electric Power Research Institute (EPRI), the National Institute of Standards and Technology (NIST), and the Environmental Protection Agency (EPA) to facilitate the development of the experimental criteria for a NIST traceability protocol for dynamic elemental mercury vapor generators. The traceability protocol will be written by EPA. Traceability will be based on the actual analysis of the output of each calibration unit at several concentration levels ranging from about 2-40 ug/m{sup 3}, and this analysis will be directly traceable to analyses by NIST using isotope dilution inductively coupled plasma/mass spectrometry (ID ICP/MS) through a chain of analyses linking the calibration unit in the power plant to the NIST ID ICP/MS. Prior to this project, NIST did not provide a recommended mercury vapor pressure equation or list mercury vapor pressure in its vapor pressure database. The NIST Physical and Chemical Properties Division in Boulder, Colorado was subcontracted under this project to study the issue in detail and to recommend a mercury vapor pressure equation that the vendors of mercury vapor pressure calibration units can use to calculate the elemental mercury vapor concentration in an equilibrium chamber at a particular temperature. As part of this study, a preliminary evaluation of calibration units from five vendors was made. The work was performed by NIST in Gaithersburg, MD and Joe Rovani from WRI who traveled to NIST as a Visiting Scientist.

  10. The inhibition of the Human Immunodeficiency Virus type 1 activity by crude and purified human pregnancy plug mucus and mucins in an inhibition assay

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    Schoeman Leann

    2008-05-01

    Full Text Available Abstract Background The female reproductive tract is amongst the main routes for Human Immunodeficiency Virus (HIV transmission. Cervical mucus however is known to protect the female reproductive tract from bacterial invasion and fluid loss and regulates and facilitates sperm transport to the upper reproductive tract. The purpose of this study was to purify and characterize pregnancy plug mucins and determine their anti-HIV-1 activity in an HIV inhibition assay. Methods Pregnancy plug mucins were purified by caesium chloride density-gradient ultra-centrifugation and characterized by Western blotting analysis. The anti-HIV-1 activities of the crude pregnancy plug mucus and purified pregnancy plug mucins was determined by incubating them with HIV-1 prior to infection of the human T lymphoblastoid cell line (CEM SS cells. Results The pregnancy plug mucus had MUC1, MUC2, MUC5AC and MUC5B. The HIV inhibition assay revealed that while the purified pregnancy plug mucins inhibit HIV-1 activity by approximately 97.5%, the crude pregnancy plug mucus failed to inhibit HIV-1 activity. Conclusion Although it is not clear why the crude sample did not inhibit HIV-1 activity, it may be that the amount of mucins in the crude pregnancy plug mucus (which contains water, mucins, lipids, nucleic acids, lactoferrin, lysozyme, immunoglobulins and ions, is insufficient to cause viral inhibition or aggregation.

  11. Real-time RT-PCR analysis of mRNA decay: half-life of Beta-actin mRNA in human leukemia CCRF-CEM and Nalm-6 cell lines

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    Barredo Julio C

    2002-03-01

    Full Text Available Abstract Background We describe an alternative method to determine mRNA half-life (t1/2 based on the Real-Time RT-PCR procedure. This approach was evaluated by using the β-actin gene as a reference molecule for measuring of mRNA stability. Results Human leukemia Nalm-6 and CCRF-CEM cells were treated with various concentrations of Actinomycin D to block transcription and aliquots were removed periodically. Total RNA was isolated and quantified using the RiboGreen® fluorescent dye with the VersaFluor Fluorometer System. One μg of total RNA was reverse transcribed and used as template for the amplification of a region of the β-actin gene (231 bp. To generate the standard curve, serial ten-fold dilutions of the pBactin-231 vector containing the cDNA amplified fragment were employed, β-actin mRNAs were quantified by Real-Time RT-PCR using the SYBR® Green I fluorogenic dye and data analyzed using the iCycle iQ system software. Using this method, the β-actin mRNA exhibited a half-life of 6.6 h and 13.5 h in Nalm-6 and CCRF-CEM cells, respectively. The t1/2 value obtained for Nalm-6 is comparable to those estimated from Northern blot studies, using normal human leukocytes (5.5 h. Conclusions We have developed a rapid, sensitive, and reliable method based on Real-Time RT-PCR for measuring mRNA half-life. Our results confirm that β-actin mRNA half-life can be affected by the cellular growth rate.

  12. Cloning and expression of cDNA for a human Gal(beta1-3)GalNAc alpha2,3-sialyltransferase from the CEM T-cell line.

    Science.gov (United States)

    Giordanengo, V; Bannwarth, S; Laffont, C; Van Miegem, V; Harduin-Lepers, A; Delannoy, P; Lefebvre, J C

    1997-07-15

    Complementary DNA encoding a human Gal(beta1-3)GalNAc alpha2,3-sialyltransferase type II (hST3Gal II) was cloned from a CEM T-cell cDNA library using a 23-base oligonucleotide probe. The sequence of this probe was established on the basis of a slightly divergent sialylmotif L that was obtained by polymerase chain reaction with degenerate oligonucleotide primers based on the conserved sialylmotif L of mammalian Gal(beta1-3)GalNAc alpha2,3-sialyltransferases. It was thus confirmed that a short oligonucleotide probe may be sensitive and highly specific. The nucleotide and amino acid sequences of hST3Gal II show, respectively, 56.3% and 49.3% similarity to hST3Gal I [Kitagawa, H. & Paulson, J. C. (1994) J. Biol. Chem. 269, 17872-17878] and 88.1% and 93.7% similarity to murine ST3Gal II [Lee, Y. C., Kojima, N., Wada, E., Kurosawa, N., Nakaoka, T., Hamamoto, T. & Tsuji, S. (1994) J. Biol. Chem. 269, 10028-10033]. hST3Gal II mRNA was highly expressed in heart, liver, skeletal muscle and various lymphoid tissues but not in brain and kidney. A soluble form of hST3Gal II expressed in COS-7 cells was tested in vitro for substrate specificity and kinetic properties. Asialofetuin and asialo-bovine submaxillary mucin appeared better substrates for hST3Gal II than for its murine counterpart as previously reported [Kojima, N., Lee, Y.-C., Hamamoto, T., Kurosawa, N. & Tsuji, S. (1994) Biochemistry 33, 5772-5776]. In previous studies, we have shown hyposialylation of O-glycans attached to two major lymphocyte CD43 and CD45 cell surface molecules in human-immunodeficiency-virus-1(HIV-1)-infected T-cell lines. Since comparable levels of hST3Gal I and hST3Gal II mRNA and enzymatic activity were observed in parental and HIV-1-infected CEM T-cell lysates, the sialylation defect associated with HIV infection of this cell line is probably due to a mechanism different from a simple altered catalytic activity of these sialyltransferases.

  13. DEVELOPMENT AND EVALUATION OF MERCURY CEMS FOR COMBUSTION EMISSIONS MONITORING

    Science.gov (United States)

    Continuous emission montiroing systems (CEMS) for mercury (Hg) are receiving increased attention and focus. Their potential use as a compiance assurance tool is of particular interest. While Hg CEMS are currently used in Europe for compliance purposes, use of Hg CEMS in the Unite...

  14. The CEMS Data Integrity Pilot Project

    Science.gov (United States)

    Clarke, Hannah; Halsall, Kevin; Fox, Nigel; Nightingale, Tim

    2013-12-01

    The provision of a Data Integrity Facility (DIF) within the UK Climate and Environmental Monitoring from Space (CEMS) facility is seen as a unique and innovative differentiator between this and other Earth Observation (EO) data archive and processing centres. As such, the UK Technology Strategy Board (TSB) is supporting the prototyping of a DIF within the CEMS environment, using data from the Advanced Along- Track Scanning Radiometer (AATSR) as a case study. This paper describes the development, including the definition of EO data integrity being adopted by the project team, the associated metadata to be populated by the system, the capabilities and functions of the system and the project's approach towards reflecting the principles of the Quality Assurance Framework for Earth Observation (QA4EO).

  15. Phenotype-associated lectin-binding profiles of normal and transformed blood cells: a comparative analysis of mannose- and galactose-binding lectins from plants and human serum/placenta.

    Science.gov (United States)

    Mann, K K; André, S; Gabius, H J; Sharp, J G

    1994-10-01

    Surface glycoconjugates of normal and transformed blood cells are commonly characterized by plant lectins. To infer physiological significance of protein-carbohydrate interactions, mammalian lectins are obviously preferable as research tools. So far, human serum lectins have not been used to assess their binding to immunophenotyped human normal or transformed blood cells. Thus, our study combines two groups of lectins with different specificity from plant and human sources. Besides concanavalin A (ConA) we have isolated the mannose-binding protein and serum amyloid P component from human serum. Especially the mannose-binding protein is believed to play a role in host defence against bacteria and yeast cells with unknown impact on normal and tumor cells. These three lectins establish the first group. In addition to the immunomodulatory mistletoe lectin, whose binding can elicit enhanced cytokine secretion from mononuclear blood cells, we included the beta-galactoside-binding lectin (14 kDa) from human placenta in the second group. The initial series of measurements was undertaken using two-color flow cytometry to determine the phenotype-associated binding (based on cluster designation; CD) of the lectins to blood and bone marrow cells from normal donors and the cell line CEM (T-lymphoblastoid), KG1-A (primitive myeloid leukemia) and Croco II (B-lymphoblastoid). Heterogeneity was apparent for each lectin in the CD-defined cell populations. Significant differences in binding were noted between Viscum album agglutinin (VAA) and other lectins for CD4+ cells from blood and between mannose-binding protein (MBP) and VAA versus 14 kDa, ConA and serum amyloid P component (SAP) for CD19+ cells from bone marrow.(ABSTRACT TRUNCATED AT 250 WORDS)

  16. CEMS: A New Infrastructure For EO And Climate Science

    Science.gov (United States)

    Bennett, Victoria L.; Kershaw, Philip; Busswell, Geoff; Hilton, Richard; O'Neill, Alan

    2013-12-01

    CEMS, the facility for Climate and Environmental Monitoring from Space, has been created as a collaboration between UK academic and industrial partners at Harwell, Oxfordshire, UK, offering Climate and Earth Observation (EO) data and services. Since going operational in September 2012, CEMS has been supporting a range of research and commercial users. Applications include production of climate-quality long- term global datasets, processing satellite observations, and development of novel algorithms and products combining EO with other environmental datasets. This paper briefly describes the CEMS infrastructure, present some example uses with initial indications of benefits of the CEMS environment, and outline plans for future evolution.

  17. 40 CFR Table 4 of Subpart Aaaa to... - Requirements for Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... Monitoring Systems (CEMS) 4 Table 4 of Subpart AAAA to Part 60 Protection of Environment ENVIRONMENTAL... Monitoring Systems (CEMS) For the following pollutants Use the following span values for your CEMS Use the following performance specifications in appendix B of this part for your CEMS If needed to meet...

  18. A simple sheathless CE-MS interface with a sub-micrometer electrical contact fracture for sensitive analysis of peptide and protein samples

    DEFF Research Database (Denmark)

    Nguyen, Tam T. T. N.; Petersen, Nickolaj J.; Rand, Kasper Dyrberg

    2016-01-01

    Online coupling of capillary electrophoresis (CE) to electrospray ionization mass spectrometry (MS) has shown considerable potential, however, technical challenges have limited its use. In this study, we have developed a simple and sensitive sheathless CE-MS interface based on the novel concept....... By analysis of a model peptide (leucine enkephalin), a limit of detection (LOD) of 0.045 pmol/μL (corresponding to 67 attomol in a sample volume of ∼15 nL) was obtained. The merit of the CE-MS approach was demonstrated by analysis of bovine serum albumin (BSA) tryptic peptides. A well-resolved separation...... profile was achieved and comparable sequence coverage was obtained by the CE-MS method (73%) compared to a representative UPLC-MS method (77%). The CE-MS interface was subsequently used to analyse a more complex sample of pharmaceutically relevant human proteins including insulin, tissue factor and α...

  19. CEM-Consumer Exposure Model Download and Install Instructions

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    CEM contains a combination of models and default parameters which are used to estimate inhalation, dermal, and oral exposures to consumer products and articles for a wide variety of product and article use categories.

  20. Efficacy of MTA and CEM Cement with Collagen Membranes for Treatment of Class II Furcation Defects.

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    Habib Ollah Ghanbari

    2014-06-01

    Full Text Available This study aimed to compare the efficacy of MTA and CEM cement in Class II furcation defects in human mandibular molars.Forty furcation defects were treated in 16 patients with chronic periodontitis. The clinical parameters of probing depth (PD, vertical and horizontal clinical attachment levels (VCAL and HCAL, open vertical and horizontal furcation depths (OVFD and OHFD, and gingival margin level (GML were measured at baseline and at 3- and 6-month (re-entry surgery postoperatively. Data were analyzed at a significance level of P<0.05.Use of MTA and CEM caused significant decreases in PD, VCAL, HCAL, OVFD and OHFD at re-entry, with no statistically significant differences between the two treatment options in soft and hard tissue parameters.Both treatment modalities caused significant gains in attachment levels and bone fills, proving efficacy for treatment of Class II furcation involvements.

  1. Structural Properties of Concrete Materials Containing RoadCem

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    Niall Holmes

    2015-01-01

    Full Text Available This paper presents findings from a preliminary study to assess the structural and material properties of a nonstandard, concrete type mix containing RoadCem, a traditional soil stabilising additive. Two different mixes determined the effect of adding RoadCem in terms of compressive and flexural strengths, breaking strain, thermal expansion and contraction behaviour, permeability using a falling head, and Young’s modulus. RoadCem is a fine powder containing alkali metals and synthetic zeolites which are complemented with a complex activator. RoadCem modifies the dynamics and chemistry of cement hydration by enhancing the crystallisation process and forming longer needle crystalline structures. It reduces the heat of hydration with an early strength development. Varying the volume in the mix varies the viscosity and alters curing times while maintaining the water cement ratio. The results from this study have shown a modest increase in compressive strength and Young’s modulus with improvements in thermal performance, particularly at low temperatures. The flexural strength of the two mixes was similar with a much reduced permeability in the RoadCem mix. The results demonstrate the improved performance of concrete incorporating RoadCem but further improvements are possible by using a better graded aggregate and controlling the maximum dry density and moisture contents.

  2. Eletroforese capilar acoplada à espectrometria de massas (CE-MS: vinte anos de desenvolvimento Capillary electrophoresis coupled to mass spectrometry (CE-MS: twenty years of development

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    Nilson Antonio Assunção

    2008-01-01

    Full Text Available CE-MS has been increasingly used for analysis of a vast array of compounds. This article reviews the different electrophoretic modes, interfaces and mass analyzers that are commonly used in the CE-MS coupling, as well as the technique advantages and performance characteristics. A large compilation of CE-MS applications is also presented. Therefore, this review is both a guide for beginners and a collection of key references for people who are familiar to the technique. Furthermore, this is the first CE-MS review published in a Brazilian journal and marks the installation of the first two commercial CE-MS units in Sao Paulo State.

  3. File list: InP.Bld.05.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.CCRF-CEM hg19 Input control Blood CCRF-CEM SRX728791,SRX107305,SRX...107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.05.AllAg.CCRF-CEM.bed ...

  4. File list: ALL.Bld.20.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728787,SRX728788,SRX7...X107296,SRX728791,SRX107290,SRX107295 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.20.AllAg.CCRF-CEM.bed ...

  5. File list: InP.Bld.50.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.CCRF-CEM hg19 Input control Blood CCRF-CEM SRX107305,SRX107290,SRX...728791 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.CCRF-CEM.bed ...

  6. File list: ALL.Bld.50.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.50.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728787,SRX728788,SRX1...X107295,SRX728791,SRX728785,SRX107296 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.50.AllAg.CCRF-CEM.bed ...

  7. File list: ALL.Bld.05.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.05.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728788,SRX728787,SRX7...X107286,SRX107295,SRX107305,SRX107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.05.AllAg.CCRF-CEM.bed ...

  8. File list: ALL.Bld.10.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728787,SRX728788,SRX7...X107286,SRX107305,SRX107295,SRX107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.10.AllAg.CCRF-CEM.bed ...

  9. File list: InP.Bld.10.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.10.AllAg.CCRF-CEM hg19 Input control Blood CCRF-CEM SRX728791,SRX107305,SRX...107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.10.AllAg.CCRF-CEM.bed ...

  10. 40 CFR Table 3 to Subpart Eeee of... - Requirements for Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... Monitoring Systems (CEMS) 3 Table 3 to Subpart EEEE of Part 60 Protection of Environment ENVIRONMENTAL... Systems (CEMS) As stated in § 60.2940, you must comply with the following: For the followingpollutants Use the following span values for your CEMS Use the following performance specifications (P.S.)...

  11. Comparison of Expanded Preequilibrium CEM Model with CEM03.03 and Experimental Data, FY2013

    CERN Document Server

    Kerby, Leslie M; Sierk, Arnold J

    2014-01-01

    Emission of light fragments (LF) from nuclear reactions is an open question. Different reaction mechanisms contribute to their production; the relative roles of each, and how they change with incident energy, mass number of the target, and the type and emission energy of the fragments is not completely understood. None of the available models are able to accurately predict emission of LF from arbitrary reactions. However, the ability to describe production of LF (especially at energies $\\gtrsim 30$ MeV) from many reactions is important for different applications, such as cosmic-ray-induced Single Event Upsets (SEUs), radiation protection, and cancer therapy with proton and heavy-ion beams, to name just a few. The Cascade-Exciton Model (CEM) version 03.03 and the Los Alamos version of the Quark-Gluon String Model (LAQGSM) version 03.03 event generators in Monte Carlo N-Particle Transport Code version 6 (MCNP6) describe quite well the spectra of fragments with sizes up to $^{4}$He across a broad range of target...

  12. 40 CFR Table 4 to Subpart Ffff of... - Model Rule-Requirements for Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... Emission Monitoring Systems (CEMS) 4 Table 4 to Subpart FFFF of Part 60 Protection of Environment...—Model Rule—Requirements for Continuous Emission Monitoring Systems (CEMS) As stated in § 60.3039, you... CEMS Use the following performance specifications (P.S.) in appendix B of this part for your CEMS...

  13. Comparison of the sealing ability of two root-end filling materials (MTA and CEM cement following retropreparation with ultrasonic or Er,Cr:YSGG laser

    Directory of Open Access Journals (Sweden)

    Razmi H

    2010-01-01

    Full Text Available "nBackground and Aims: Considering advantages and disadvantages of mineral trioxide aggregate (MTA, Calcium Enriched Mixture (CEM cement has been developed recently. The purpose of this study was to compare the apical microleakage of the root-end cavities prepared by ultrasonic or Er,Cr:YSGG laser and filled with MTA or CEM cement. "nMaterials and Methods: Eighty single-rooted, extracted human teeth were instrumented and obturated. Root-end resection was made by removing 3 mm of the apex. The teeth were randomly divided into two experimental (n=30 and two positive and negative control (n=10 groups. After that, the retrograde cavities were prepared using ultrasonic or Er,Cr: YSGG Laser. According to the root-end filling materials (MTA or CEM cement, each group was then divided into two subgroups. Finally, specimens were cleared for assessing the amount of apical dye (Indian ink penetration. The data were analyzed using Kruskall-Wallis and Dunn tests. "nResults: Laser/CEM cement group showed significantly the lowest mean apical dye penetration. There were no statistically significant differences between Laser/MTA, ultrasonic/MTA and ultrasonic/CEM cement groups. "nConclusion: Based on the findings of this study, CEM cement demonstrated lower rate of apical leakage compared with MTA, when the root-end cavities prepared with Er,Cr:YSGG Laser. The sealing ability of MTA was not different following root-end preparation by ultrasonic or Er,Cr:YSGG Laser.

  14. Rapamycin Sensitizes Glucocorticoid Resistant Acute Lymphoblastic Leukemia CEM-C1 Cells to Dexamethasone Induced Apoptosis through both mTOR Suppression and Up-Regulation and Activation of Glucocorticoid Receptor*

    Institute of Scientific and Technical Information of China (English)

    GUO Xia; ZHOU Chen Yan; LI Qiang; GAO Ju; ZHU Yi Ping; GU Ling; MA Zhi Gui

    2013-01-01

    Objective To explore the role of glucocorticoid (GC) receptor (GR) in rapamycin's reversion of GC resistance in human GC-resistant T-acute lymphoblastic leukemia (ALL) CEM-C1 cells. Methods CEM-C1 cells were cultured in vitro and treated with rapamycin at different concentrations with or without 1 μmol/L dexamethasone (Dex). 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) test was performed to assess cell proliferation. The cell cycle and cell apoptosis were analyzed by flow cytometry. The expression of GRα mRNA was determined by real-time quantitative RT-PCR. The expression of GR, p-70S6K, Mcl-1, and Bim proteins was detected by Western blot. Results When incubated with rapamycin at different concentrations, CEM-C1 cells showed significant growth inhibition in a time- and concentration-dependent manner. The growth inhibition was synergistically increased when CEM-C1 cells were treated with rapamycin plus 1 μmol/L Dex. CEM-C1 cells treated with rapamycin alone showed no apparent apoptosis, and were arrested at G0/G1 phase. After the treatment with Dex plus rapamycin, CEM-C1 cells demonstrated apparent apoptosis and increased the cell cycle arrested at G0/G1 phase. Rapamycin combined with Dex up-regulated GRα, phosphorylated GR(p-GR), and pro-apoptotic protein Bim-EL in CEM-C1 cells, but inhibited the expression of p-p70S6K, a downstream target protein of mTOR (mammalian target of rapamycin). Conclusion After the treatment with rapamycin plus Dex, Dex resistant CEM-C1 cells induce growth inhibition and apoptosis. The underlying mechanism may involve inhibition of the mTOR signaling pathway and also be associated with up-regulation of GR expression and activation of GC-GR signaling pathway.

  15. Capillary electrophoresis coupled to mass spectrometry (CE-MS): twenty years of development

    OpenAIRE

    Nilson Antonio Assunção; Etelvino José Henriques Bechara; Ana Valéria Colnaghi Simionato; Marina Franco Maggi Tavares; Emanuel Carrilho

    2008-01-01

    CE-MS has been increasingly used for analysis of a vast array of compounds. This article reviews the different electrophoretic modes, interfaces and mass analyzers that are commonly used in the CE-MS coupling, as well as the technique advantages and performance characteristics. A large compilation of CE-MS applications is also presented. Therefore, this review is both a guide for beginners and a collection of key references for people who are familiar to the technique. Furthermore, this is th...

  16. Relevance of career services for CEMS students for successful job-entry

    OpenAIRE

    Zicháčková, Denisa

    2010-01-01

    The thesis aims at exploring what the role of career guidance services for CEMS students in their job search is, and at proposing a number of recommendations for further development of CEMS career services. First part of this thesis will provide us with a necessary theoretical background on career choice, career management and development, and career guidance. Then, CEMS and its current career services offer will be presented in brief. Finally, an analysis of a research that we have conducted...

  17. Eletroforese capilar acoplada à espectrometria de massas (CE-MS): vinte anos de desenvolvimento

    OpenAIRE

    Assunção, Nilson Antonio [UNIFESP; Bechara, Etelvino José Henriques [UNIFESP; Simionato,Ana Valéria Colnaghi; Tavares, Marina Franco Maggi; Carrilho, Emanuel

    2008-01-01

    CE-MS has been increasingly used for analysis of a vast array of compounds. This article reviews the different electrophoretic modes, interfaces and mass analyzers that are commonly used in the CE-MS coupling, as well as the technique advantages and performance characteristics. A large compilation of CE-MS applications is also presented. Therefore, this review is both a guide for beginners and a collection of key references for people who are familiar to the technique. Furthermore, this is th...

  18. 40 CFR Table 7 to Subpart Jjj of... - Requirements for Continuous Emission Monitoring Systems (CEMS) a

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Requirements for Continuous Emission Monitoring Systems (CEMS) a 7 Table 7 to Subpart JJJ of Part 62 Protection of Environment ENVIRONMENTAL...—Requirements for Continuous Emission Monitoring Systems (CEMS) a ER31JA03.013...

  19. 40 CFR Table 6 to Subpart Jjj of... - Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 8 2010-07-01 2010-07-01 false Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 6 Table 6 to Subpart JJJ of Part 62 Protection of Environment... of Part 62—Requirements for Validating Continuous Emission Monitoring Systems (CEMS) ER31JA03.012...

  20. 40 CFR Table 3 of Subpart Aaaa to... - Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 3 Table 3 of Subpart AAAA to Part 60 Protection of Environment... Continuous Emission Monitoring Systems (CEMS) For the following continuous emission monitoring systems...

  1. Development and Study of Thermal Conductive CEM-3 CCL%高导热型CEM-3覆铜板的开发与研究

    Institute of Scientific and Technical Information of China (English)

    叶致远

    2016-01-01

    This paper uses the method of improving the crystallinity of polymer and filling the inorganic insulating heat conductive filler and develops thermal conductive CEM-3 CCL.%研究了采用提高聚合物结晶度和填充无机绝缘导热填料的方法,开发出一种具有良好导热性的CEM-3复合基覆铜板。

  2. 40 CFR Table 7 to Subpart Bbbb of... - Model Rule-Requirements for Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... Emission Monitoring Systems (CEMS) 7 Table 7 to Subpart BBBB of Part 60 Protection of Environment...—Requirements for Continuous Emission Monitoring Systems (CEMS) For the following pollutants Use the following span values for CEMS Use the following performance specifications in appendix B of this part for...

  3. Investigation of Cytocidal Activity of Bacillus Thuringiensis Parasporal Toxin on CCRF-CEM Cell Line

    Directory of Open Access Journals (Sweden)

    Elham Moazamian

    2013-03-01

    Full Text Available Background & Objective: Parasporin is a parasporal protein of Bacillus thuringiensis and exhibits special cytocidal activity against human cancer cells. Similar to other insecticidal Bacillus thuringiensis crystal toxins, parasporin shows target specificity and damages the cellular membrane. In this study, different strains of Bacillus thuringiensis isolated from various regions of Iran and their cytocidal activity against CCRF-CEM cell line and human erythrocyte were investigated.   Materials & Methods: Fifty soil samples were collected from different Iranian provinces, and characterization was performed based on protein crystal morphology by phase-contrast microscope and variations of Cry protein toxin using SDS-PAGE. After parasporin was processed with proteinase K, the active form was produced and protein activity on the cell line was evaluated. Results: Parasporal inclusion proteins showed different cytotoxicity against acute lymphoblastic leukemia cells (ALL, but not against normal lymphocyte. Isolated parasporin demonstrated no hemolytic activity against human erythrocyte. It appears that these proteins have the ability to differentiate between normal lymphocytes and leukemia cells and have specific receptors on specific cancer cell lines. Conclusion: Our results provide evidence that the parasporin-producing organism is a common member in Bacillus thuringiensis populations occurring in the natural environments of Iran.

  4. Analysis of Hemoglobin Glycation Using Microfluidic CE-MS: A Rapid, Mass Spectrometry Compatible Method for Assessing Diabetes Management.

    Science.gov (United States)

    Redman, Erin A; Ramos-Payan, Maria; Mellors, J Scott; Ramsey, J Michael

    2016-05-17

    Diabetes has become a significant health problem worldwide with the rate of diagnosis increasing rapidly in recent years. Measurement of glycated blood proteins, particularly glycated hemoglobin (HbA1c), is an important diagnostic tool used to detect and manage the condition in patients. Described here is a method using microfluidic capillary electrophoresis with mass spectrometry detection (CE-MS) to assess hemoglobin glycation in whole blood lysate. Using denaturing conditions, the hemoglobin (Hb) tetramer dissociates into the alpha and beta subunits (α- and β-Hb), which are then separated via CE directly coupled to MS detection. Nearly baseline resolution is achieved between α-Hb, β-Hb, and glycated β-Hb. A second glycated β-Hb isomer that is partially resolved from β-Hb is detected in extracted ion electropherograms for glycated β-Hb. Glycation on α-Hb is also detected in the α-Hb mass spectrum. Additional modifications to the β-Hb are detected, including acetylation and a +57 Da species that could be the addition of a glyoxal moiety. Patient blood samples were analyzed using the microfluidic CE-MS method and a clinically used immunoassay to measure HbA1c. The percentage of glycated α-Hb and β-Hb was calculated from the microfluidic CE-MS data using peak areas generated from extracted ion electropherograms. The values for glycated β-Hb were found to correlate well with the HbA1c levels derived in the clinic, giving a slope of 1.20 and an R(2) value of 0.99 on a correlation plot. Glycation of human serum albumin (HSA) can also be measured using this technique. It was observed that patients with elevated glycated Hb levels also had higher levels of HSA glycation. Interestingly, the sample with the highest HbA1c levels did not have the highest levels of glycated HSA. Because the lifetime of HSA is shorter than Hb, this could indicate a recent lapse in glycemic control for that patient. The ability to assess both Hb and HSA glycation has the potential

  5. Comparison of Skin Reaction between MTA (Produced in Iran) and CEM in Rabbit.

    Science.gov (United States)

    Shokravi, Marziyeh; Tabarsi, Bahareh; Moghaddamnia, Aliakbar; Sohanfaraji, Alieh; Pourghasem, Mohsen

    2012-01-01

    Pathological changes in pulp and periapical tissues are addressed by endodontic treatment. The material used in this treatment must be biocompatible. The aim of this study is to compare the skin reaction of Calcium Enriched Mixture (CEM) and Mineral Trioxide Aggregate (MTA) produced in Iran on rabbit. Sixteen male newzeland albino rabbits weighting 2 kg were used. The animals back hair was shaved, 24 hours before application of each material. The material was applied on two sites (2 × 2 cm) while the third site was used as control. All sites were covered by gauze and bandaged for 4 hours. Then the material's remnants were washed off the sites of application. Observations were performed in 1, 24, 48 and 72 hours after removing the materials. Erythematous surface areas were measured by the morphometric method. After sacrificing animals the skins were dissected and the specimens were prepared for histological evaluation. There were significant differences between CEM and MTA in erythematous surface areas at 1, 24 and 48 hours after removing the materials (pMTA and control sample (p=0.0001) and between MTA and CEM (p=0.035). There was no significant difference between control and CEM (p>0.05). The average erythematous surface areas were wider in MTA sites than CEM sites. As a conclusion it seems that biocompatibility of CEM could be more than MTA.

  6. CEMS using hot wet extractive method based on DOAS

    Science.gov (United States)

    Sun, Bo; Zhang, Chi; Sun, Changku

    2011-11-01

    A continuous emission monitoring system (CEMS) using hot wet extractive method based on differential optical absorption spectroscopy (DOAS) is designed. The developed system is applied to retrieving the concentration of SO2 and NOx in flue gas on-site. The flue gas is carried along a heated sample line into the sample pool at a constant temperature above the dew point. In this case, the adverse impact of water vapor on measurement accuracy is reduced greatly, and the on-line calibration is implemented. And then the flue gas is discharged from the sample pool after the measuring process is complete. The on-site applicability of the system is enhanced by using Programmable Logic Controller (PLC) to control each valve in the system during the measuring and on-line calibration process. The concentration retrieving method used in the system is based on the partial least squares (PLS) regression nonlinear method. The relationship between the known concentration and the differential absorption feature gathered by the PLS nonlinear method can be figured out after the on-line calibration process. Then the concentration measurement of SO2 and NOx can be easily implemented according to the definite relationship. The concentration retrieving method can identify the information and noise effectively, which improves the measuring accuracy of the system. SO2 with four different concentrations are measured by the system under laboratory conditions. The results proved that the full-scale error of this system is less than 2%FS.

  7. Improved Intranuclear Cascade Models for the Codes CEM2k and LAQGSM

    CERN Document Server

    Mashnik, S G; Sierk, A J; Prael, R E

    2005-01-01

    An improved version of the Cascade-Exciton Model (CEM) of nuclear reactions implemented in the codes CEM2k and the Los Alamos version of the Quark-Gluon String Model (LAQGSM) has been developed recently at LANL to describe reactions induced by particles and nuclei at energies up to hundreds of GeV/nucleon for a number of applications. We present several improvements to the intranuclear cascade models used in CEM2k and LAQGSM developed recently to better describe the physics of nuclear reactions. First, we incorporate the photonuclear mode from CEM2k into LAQGSM to allow it to describe photonuclear reactions, not previously modeled there. Then, we develop new approximations to describe more accurately experimental elementary energy and angular distributions of secondary particles from hadron-hadron and photon-hadron interactions using available data and approximations published by other authors. Finally, to consider reactions involving very highly excited nuclei (E* > 2-3 MeV/A), we have incorporated into CEM2...

  8. CEMS study on diluted magneto titanium oxide films prepared by pulsed laser deposition

    Science.gov (United States)

    Nomura, K.; Inaba, K.; Iio, S.; Hitosugi, T.; Hasegawa, T.; Hirose, Y.; Homonnay, Z.

    6% 57Fe doped titanium oxide films, prepared by pulsed laser deposition (PLD) on sapphire substrate at 650° under various vacuum conditions, were characterized mainly by conversion electron Mössbauer spectrometry (CEMS). Two magnetic sextets with hyperfine fields 33 and 29 T, and one doublet were observed in the CEMS spectra of Ti02 films prepared under P02=10-6 and 10-8 torr, which showed ferromagnetism at room temperature, whereas only the doublet of paramagnetic Fe3+ species was observed for the film prepared under P02=10-1 torr.

  9. 40 CFR Table 6 to Subpart Bbbb of... - Model Rule-Requirements for Validating Continuous Emission Monitoring Systems (CEMS)

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 6 2010-07-01 2010-07-01 false Model Rule-Requirements for Validating Continuous Emission Monitoring Systems (CEMS) 6 Table 6 to Subpart BBBB of Part 60 Protection of Environment...—Requirements for Validating Continuous Emission Monitoring Systems (CEMS) For the following continuous...

  10. Preparation of Halogen-free CEM-1 CCL%无卤型CEM-1覆铜板的开发

    Institute of Scientific and Technical Information of China (English)

    李强利

    2004-01-01

    研究了采用含磷环氧树脂和氢氧化铝作为阻燃剂,开发出不含卤素和锑元素的无卤型CEM-1覆铜板.产品性能符合IPC-4101/4110标准,卤素含量达到JPCA-ES-01-1999标准要求.

  11. Increased Migration of 6T-CEM through Human Brain Microvascular Endothelial Cells Monolayer Dependent on Macrophage Inflammatory Protein-1α%巨噬细胞炎症蛋白1α促进6T-CEM细胞穿过人脑微血管内皮细胞单层

    Institute of Scientific and Technical Information of China (English)

    尚德淑; 马怡然; 赵伟东; 方文刚; 朱莉; 陈誉华; 宋今丹

    2006-01-01

    有研究表明,T细胞可能参与阿尔茨海默氏病(AD)免疫过程,但T细胞如何穿过血脑屏障内皮细胞紧密连接,到达脑内还不清楚.我们研究曾发现,AD病人外周血T淋巴细胞穿过人脑微血管内皮细胞(HBMEC)单层能力高于同龄正常人,其T淋巴细胞巨噬细胞炎症蛋白1α(MIP-1α)表达明显增高.为进一步在体外研究促使T淋巴细胞穿过HBMEC单层的机制,选取重组人MIP-1α(rhMIP-1α)作用于HBMEC,同时选用高表达MIP-1α的人急性白血病T淋巴细胞(6T-CEM)作为模式细胞,与HBMEC共同温育.发现rhMIP-1α可促进6T-CEM细胞穿过HBMEC单层,并使HBMEC单层紧密连接结构发生改变.在6T-CEM细胞或rhMIP-1α与HBMEC单层单独温育过程中,均引起HBMEC单层CCR5表达变化.提示MIP-1α可能通过与HBMEC单层上CCR5相互作用介导T淋巴细胞穿过HBMEC单层.

  12. 40 CFR 75.38 - Standard missing data procedures for Hg CEMS.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 16 2010-07-01 2010-07-01 false Standard missing data procedures for...) AIR PROGRAMS (CONTINUED) CONTINUOUS EMISSION MONITORING Missing Data Substitution Procedures § 75.38 Standard missing data procedures for Hg CEMS. (a) Once 720 quality assured monitor operating hours of...

  13. Parameterizing the Variability and Uncertainty of Wind and Solar in CEMs

    Energy Technology Data Exchange (ETDEWEB)

    Frew, Bethany

    2016-07-11

    We present current and improved methods for estimating the capacity value and curtailment impacts from variable generation (VG) in capacity expansion models (CEMs). The ideal calculation of these variability metrics is through an explicit co-optimized investment-dispatch model using multiple years of VG and load data. Because of data and computational limitations, existing CEMs typically approximate these metrics using a subset of all hours from a single year and/or using statistical methods, which often do not capture the tail-event impacts or the broader set of interactions between VG, storage, and conventional generators. In our proposed new methods, we use hourly generation and load values across all hours of the year to characterize the (1) contribution of VG to system capacity during high load hours, (2) the curtailment level of VG, and (3) the reduction in VG curtailment due to storage and shutdown of select thermal generators. Using CEM model outputs from a preceding model solve period, we apply these methods to exogenously calculate capacity value and curtailment metrics for the subsequent model solve period. Preliminary results suggest that these hourly methods offer improved capacity value and curtailment representations of VG in the CEM from existing approximation methods without additional computational burdens.

  14. Total reaction cross sections in CEM and MCNP6 at intermediate energies

    Science.gov (United States)

    Kerby, Leslie M.; Mashnik, Stepan G.

    2015-08-01

    Accurate total reaction cross section models are important to achieving reliable predictions from spallation and transport codes. The latest version of the Cascade Exciton Model (CEM) as incorporated in the code CEM03.03, and the Monte Carlo N-Particle transport code (MCNP6), both developed at Los Alamos National Laboratory (LANL), each use such cross sections. Having accurate total reaction cross section models in the intermediate energy region (∼ 50 MeV to ∼ 5 GeV) is very important for different applications, including analysis of space environments, use in medical physics, and accelerator design, to name just a few. The current inverse cross sections used in the preequilibrium and evaporation stages of CEM are based on the Dostrovsky et al. model, published in 1959. Better cross section models are available now. Implementing better cross section models in CEM and MCNP6 should yield improved predictions for particle spectra and total production cross sections, among other results. Our current results indicate this is, in fact, the case.

  15. Total Reaction Cross Sections in CEM and MCNP6 at Intermediate Energies

    CERN Document Server

    Kerby, Leslie M

    2015-01-01

    Accurate total reaction cross section models are important to achieving reliable predictions from spallation and transport codes. The latest version of the Cascade Exciton Model (CEM) as incorporated in the code CEM03.03, and the Monte Carlo N-Particle transport code (MCNP6), both developed at Los Alamos National Laboratory (LANL), each use such cross sections. Having accurate total reaction cross section models in the intermediate energy region ($\\sim$50 MeV to $\\sim$5 GeV) is very important for different applications, including analysis of space environments, use in medical physics, and accelerator design, to name just a few. The current inverse cross sections used in the preequilibrium and evaporation stages of CEM are based on the Dostrovsky {\\it et al.} model, published in 1959. Better cross section models are available now. Implementing better cross section models in CEM and MCNP6 should yield improved predictions for particle spectra and total production cross sections, among other results. Our current...

  16. BIM and Sustainability Education: Incorporating Instructional Needs into Curriculum Planning in CEM Programs Accredited by ACCE

    Directory of Open Access Journals (Sweden)

    Jingxiao Zhang

    2016-05-01

    Full Text Available Higher education ought to support the identification of training needs for industrial building information modelling (BIM curriculum development and sustainability education in the fields of civil engineering and management (CEM. This paper proposes a framework based on a four-phase step-by-step quality function deployment (QFD application for CEM curriculum planning and quality management. The framework attempts to respond to requests collected from 17 professionals and professors in order to integrate BIM into the higher education curriculum in China with a specific focus on construction management programs accredited by the American Council for Construction Education (ACCE. The entropy method and a K1–K6 scale adapted from Bloom’s revised cognitive process were employed to evaluate the CEM curriculum in QFD. The proposed framework was successfully applied to CEM curriculum planning, which included two curriculums of the four main knowledge areas provided by the Chinese CEM guidelines: construction cost and flow construction. Two curriculum areas showed that content should focus on knowledge such as (a Program evaluation and review technique(PERT planning; (b construction optimization in flow construction; (c principles of bill of quantities and (d construction consumption in construction costs. As for teaching quality management in China, the higher education curriculum should focus on three aspects to promote curriculum integration: (a pedagogical design; (b teaching resource and material and (c curriculum assessment. This research sheds light on the pedagogical shift to a similar context that has established guidelines accredited by the ACCE, with respect to reviewing curriculum planning from a knowledge system perspective in order to meet industrial demands at the operational level.

  17. CEM: Increasing productivity through the management and monitoring of experiences provided to customers

    Directory of Open Access Journals (Sweden)

    Adriana Arineli

    2015-12-01

    Full Text Available Dealing with intangible and so subtle experience is unusual and a huge challenge for management that is not used to measure what has no numbers, but maybe they need to see beyond the obvious and accessible statistics. Recently, several studies point to the importance of customer experience management (CEM. However, if the CEM is a strategy to focus on operations and processes of a business around the customers’ experiences with the company, it is essential to seek grants to structure it and find out its effectiveness. This study examines the issues involved in offering superior customer experiences on fashion retail stores in Brazil, identifying the relation between productivity and CEM. Through a research with managers of three important Brazilian clothing retail chains, it was possible to analyze the aspects that impact on the customer experience and their relevance. A questionnaire was applied to evaluate 23 variables that make up the experience of the customer and their impact on increasing productivity. Some statistical techniques were used for data processing and it was possible to realize that only 4 of the 23 items were not relevant for customer experience. It can be concluded that CEM is effective in increasing productivity and can be used as a guideline matrix management in decision-making to promote superior customer experiences. Specific characteristics of each segment suggest different impacts in every aspect. Therefore, it is crucial that each segment review its own variables that will structure the CEM. Even assuming that it is defiant see beyond the obvious, maybe this is the necessary opportunity to create real competitive advantage and longevity for companies that want to stand out and be successful over time.

  18. A REVIEW OF CEM: CUSTOMER ENGANGEMENT AS INNOVATION CO-CREATOR

    Directory of Open Access Journals (Sweden)

    Elidjen

    2013-11-01

    Full Text Available Competition is very tight causing companies looking for a competitive edge, both in the product packaging and in maintaining good relations with their customers. The management of good relationship is commonly referred to Customer Relationship Management (CRM. In general, CRM is focused on how to market something to customers and obtain value from them by using information technology. However, it ignores customers insight that can provide added value to the company's profits. That is what causes the need for Customer Experience Management (CEM to handle the experience of customers to improve value for customers so that customers become loyal. More useful definition of CEM is handling customer interactions to build brand equity and increase the long-term profitability. The five-element approach known as SMART (strategy, metrics; alignment, redesign and technology has a positive impact for the company. In the end customers can actualize themselves, through a company's brand and products.

  19. Continued expression of vinca alkaloid resistance by CCRF-CEM cells after treatment with tunicamycin or pronase.

    Science.gov (United States)

    Beck, W T; Cirtain, M C

    1982-01-01

    We have shown that a glycoprotein(s) with a molecular weight of approximately 180,000 exists on the surface of cultured lymphoblasts selected for resistance to vinblastine (VLB) (CEM/VLB100). The amount of this glycoprotein, which is barely detectable on the VLB-sensitive cells (CEM), appears to be related in part to the degree of resistance, up to approximately 270-fold. Exposure of the cells to Pronase for 45 to 60 min or growth of the cells for 2 days in tunicamycin, an inhibitor of glycoprotein synthesis, resulted in the absence of the resistance-associated glycoproteins, as determined by polyacrylamide gel electrophoresis of these treated cells after labeling te cells either with sodium [3H]-borohydride or with [14C]- or [3H]glucosamine. Uptake studies with [3H]VLB revealed that CEM cells normally accumulated and retained more drug than did the CEM/VLB100 cells. While the tunicamycin or Pronase treatments slightly increased the uptake of drug by CEM cells, there was no enhanced uptake of [3H]VLB by the tunicamycin- or pronase-treated CEM/VLB100 cells, when compared with untreated controls, indicating that the loss of external surface glycoproteins did not render the resistant cells more "leaky" to drug influx. Additionally, diminished drug retention by the CEM/VLB100 cells was unaffected by these treatments. Moreover, when CEM/VLB100 cells were grown grown for 2 days in the presence of tunicamycin and several concentrations of VLB, no enhanced toxicity of VLB was noted. Other experiments with [14C]glucosamine and [3H]leucine revealed that treatment with tunicamycin did not affect the distribution of proteins in these cells. Taken together, these results permit the suggestion that the carbohydrate moiety of the cell surface resistance-associated glycoproteins does not mediate resistance to the alkaloid per se; however, a role for plasma membrane proteins cannot be ruled out at this time.

  20. Production of Heavy Clusters with an Expanded Coalescence Model in CEM

    CERN Document Server

    Kerby, Leslie M

    2015-01-01

    The production of heavy clusters in nuclear reactions is important in a wide variety of applications: radiation shielding, space engineering and design, medical physics, accelerator design, and more. According to the Cascade Exciton Model (CEM), there are three ways high-energy heavy clusters can be produced. The first way is via coalescence of nucleons produced in the IntraNuclear Cascade (INC). The second way is via the preequilibrium model. The last way is via Fermi breakup. Previous work in CEM examines the impact of expansions of the preequilibrium model and Fermi breakup model on heavy cluster production. The present work studies the impact of expanding the coalescence model on heavy cluster spectra. CEM03.03, the default event generator in the Monte Carlo N-Particle transport code version 6 (MCNP6) for intermediate-energy nuclear reactions, is capable of producing light fragments up to He4 in its coalescence model. In the present study, we have expanded the coalescence model to be able to produce up to...

  1. Continuous Emission Monitoring System (CEMS) Technologies and Application%烟气连续监测系统(CEMS)技术及应用

    Institute of Scientific and Technical Information of China (English)

    郜武

    2009-01-01

    CEMS是用来监测固定污染源的污染物排放监测系统,在环保监测的应用中越来越广泛和越来越重要.介绍CEMS,即烟气排放连续监测系统在中国的三个发展阶段以及目前CEMS存在的多种测量技术及各自的特点比较.并着重介绍CEMS的系统组成、技术要求、技术特点和在火电厂的实际应用.

  2. 40 CFR 60.4405 - How do I perform the initial performance test if I have chosen to install a NOX-diluent CEMS?

    Science.gov (United States)

    2010-07-01

    ... performance test if I have chosen to install a NOX-diluent CEMS? 60.4405 Section 60.4405 Protection of... § 60.4405 How do I perform the initial performance test if I have chosen to install a NOX-diluent CEMS? If you elect to install and certify a NOX-diluent CEMS under § 60.4345, then the initial...

  3. An investigation of the corrosion of polycrystalline iron by XPS, TMS and CEMS

    Energy Technology Data Exchange (ETDEWEB)

    Idczak, K.; Idczak, R., E-mail: ridczak@ifd.uni.wroc.pl; Konieczny, R.

    2016-06-15

    The room temperature studies of polycrystalline iron exposed to air at various temperatures were performed using: the transmission Mössbauer spectroscopy (TMS), the conversion electron Mössbauer spectroscopy (CEMS) and the X-ray photoelectron spectroscopy (XPS). The unique combination of these techniques allows to determine changes of chemical composition and content of iron oxides simultaneously on the surface region, the 300 nm pre-surface region and the bulk of the samples. The results show that the chemical composition of samples changes significantly and it is strongly dependent on temperature at which the iron sample is exposed to air as well as on investigated region.

  4. An investigation of the corrosion of polycrystalline iron by XPS, TMS and CEMS

    Science.gov (United States)

    Idczak, K.; Idczak, R.; Konieczny, R.

    2016-06-01

    The room temperature studies of polycrystalline iron exposed to air at various temperatures were performed using: the transmission Mössbauer spectroscopy (TMS), the conversion electron Mössbauer spectroscopy (CEMS) and the X-ray photoelectron spectroscopy (XPS). The unique combination of these techniques allows to determine changes of chemical composition and content of iron oxides simultaneously on the surface region, the 300 nm pre-surface region and the bulk of the samples. The results show that the chemical composition of samples changes significantly and it is strongly dependent on temperature at which the iron sample is exposed to air as well as on investigated region.

  5. Centro de educação matemática (CEM): fragmentos de identidade

    OpenAIRE

    Heloisa da Silva

    2007-01-01

    Esta pesquisa teve como objetivo analisar o processo de constituição da identidade do Centro de Educação Matemática (CEM), um grupo que atuou, sobretudo, nos anos de 1984 a 1997 na grande São Paulo e que se apresenta como equipe prestadora de serviços de assessoria e consultoria especializada em Educação Matemática a escolas, Diretorias de Ensino, Secretarias de Educação e instituições especializadas como a Coordenadoria de Estudos e Normas Pedagógicas CENP e a Fundação para o Desenvolvimento...

  6. CEMS: Building a Cloud-Based Infrastructure to Support Climate and Environmental Data Services

    Science.gov (United States)

    Kershaw, P. J.; Curtis, M.; Pechorro, E.

    2012-04-01

    CEMS, the facility for Climate and Environmental Monitoring from Space, is a new joint collaboration between academia and industry to bring together their collective expertise to support research into climate change and provide a catalyst for growth in related Earth Observation (EO) technologies and services in the commercial sector. A recent major investment by the UK Space Agency has made possible the development of a dedicated facility at ISIC, the International Space Innovation Centre at Harwell in the UK. CEMS has a number of key elements: the provision of access to large-volume EO and climate datasets co-located with high performance computing facilities; a flexible infrastructure to support the needs of research projects in the academic community and new business opportunities for commercial companies. Expertise and tools for scientific data quality and integrity are another essential component, giving users confidence and transparency in its data, services and products. Central to the development of this infrastructure is the utilisation of cloud-based technology: multi-tenancy and the dynamic provision of resources are key characteristics to exploit in order to support the range of organisations using the facilities and the varied use cases. The hosting of processing services and applications next to the data within the CEMS facility is another important capability. With the expected exponential increase in data volumes within the climate science and EO domains it is becoming increasingly impracticable for organisations to retrieve this data over networks and provide the necessary storage. Consider for example, the factor of o20 increase in data volumes expected for the ESA Sentinel missions over the equivalent Envisat instruments. We explore the options for the provision of a hybrid community/private cloud looking at offerings from the commercial sector and developments in the Open Source community. Building on this virtualisation layer, a further core

  7. Biomarker discovery by CE-MS enables sequence analysis via MS/MS with platform-independent separation.

    Science.gov (United States)

    Zürbig, Petra; Renfrow, Matthew B; Schiffer, Eric; Novak, Jan; Walden, Michael; Wittke, Stefan; Just, Ingo; Pelzing, Matthias; Neusüss, Christian; Theodorescu, Dan; Root, Karen E; Ross, Mark M; Mischak, Harald

    2006-06-01

    CE-MS is a successful proteomic platform for the definition of biomarkers in different body fluids. Besides the biomarker defining experimental parameters, CE migration time and molecular weight, especially biomarker's sequence identity is an indispensable cornerstone for deeper insights into the pathophysiological pathways of diseases or for made-to-measure therapeutic drug design. Therefore, this report presents a detailed discussion of different peptide sequencing platforms consisting of high performance separation method either coupled on-line or off-line to different MS/MS devices, such as MALDI-TOF-TOF, ESI-IT, ESI-QTOF and Fourier transform ion cyclotron resonance, for sequencing indicative peptides. This comparison demonstrates the unique feature of CE-MS technology to serve as a reliable basis for the assignment of peptide sequence data obtained using different separation MS/MS methods to the biomarker defining parameters, CE migration time and molecular weight. Discovery of potential biomarkers by CE-MS enables sequence analysis via MS/MS with platform-independent sample separation. This is due to the fact that the number of basic and neutral polar amino acids of biomarkers sequences distinctly correlates with their CE-MS migration time/molecular weight coordinates. This uniqueness facilitates the independent entry of different sequencing platforms for peptide sequencing of CE-MS-defined biomarkers from highly complex mixtures.

  8. 9 CFR 93.304 - Import permits for horses from regions affected with CEM and for horse specimens for diagnostic...

    Science.gov (United States)

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Import permits for horses from regions affected with CEM and for horse specimens for diagnostic purposes; reservation fees for space at quarantine... POULTRY PRODUCTS; REQUIREMENTS FOR MEANS OF CONVEYANCE AND SHIPPING CONTAINERS Horses § 93.304...

  9. Possible Improvements to MCNP6 and its CEM/LAQGSM Event-Generators

    Energy Technology Data Exchange (ETDEWEB)

    Mashnik, Stepan Georgievich [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-08-04

    This report is intended to the MCNP6 developers and sponsors of MCNP6. It presents a set of suggested possible future improvements to MCNP6 and to its CEM03.03 and LAQGSM03.03 event-generators. A few suggested modifications of MCNP6 are quite simple, aimed at avoiding possible problems with running MCNP6 on various computers, i.e., these changes are not expected to change or improve any results, but should make the use of MCNP6 easier; such changes are expected to require limited man-power resources. On the other hand, several other suggested improvements require a serious further development of nuclear reaction models, are expected to improve significantly the predictive power of MCNP6 for a number of nuclear reactions; but, such developments require several years of work by real experts on nuclear reactions.

  10. Interfacial analysis of tribological systems containing molybdenum disulfide and iron using XPS and CEMS

    Science.gov (United States)

    Zabinski, J. S.; George, T.; Tatarchuk, B. J.

    1989-01-01

    In the present evaluation of results from studies of the interfacial chemistry and morphology of a buried lubricant-substrate interface, specimens of increasing complexity that culminated with the effects of excess sulfur and defects were characterized by XPS and SEM, as well as conversion-electron Moessbauer spectroscopy (CEMS). In order to simulate sputtered systems, single crystals of MoS2 were damaged with Ar(+) bombardment and coated with Fe. Fe is found to react differently with MoS2 depending on surface treatments, surface defects, annealing treatments, and the presence of excess sulfur. The annealing temperature determines which compounds are formed, as well as the crystal habit and plane at the Fe-MoS2 interface.

  11. Adhesion of Streptococcus Mutans to Glass Ionomer, BisCem Cement and Enamel: An In Vitro Study

    Directory of Open Access Journals (Sweden)

    Ezzatollah Jalalian

    2016-05-01

    Full Text Available Objectives: Considering the adhesion of some microorganisms such as Streptococcus mutans (S. mutans to restorative materials and the unrecognized consequences of this phenomenon, and due to the controversies in this regard, it is important to discover the materials to which the lowest adhesion of S. mutans occurs. The objective of this study was to assess the level of adhesion of S. mutans to glass ionomer (GI, BisCem Cement and enamel.Materials and Methods:In this in vitro experimental study, 12 specimens including five GI blocks (GC America Inc., Alsip, IL, USA, five BisCem blocks (Bisco Inc., Schaumburg, IL, USA and two enamel blocks were exposed to a bacterial suspension (1×106 mg/mL. After incubation for one hour at 37˚C, the swab samples were taken and cultured in blood agar. The S. mutans colonies were counted by unaided vision after 48 hours of incubation. The results were analyzed using ANOVA followed by the Tukey’s test.Results:The number of colonies attributed to enamel, GI, and BisCem blocks was 24±2, 24.2±2.7 and 14.8±1.7 colonies/mm2, respectively. There was no difference between enamel and GI in terms of adhesion of S. mutans (P=0.08 and P>0.001, respectively; however, the difference between these two and BisCem was statistically significant (P= 0.00075 and P<0.001, respectively.Conclusion:Within the limitations of this study, BisCem cement is superior to GI for the cementation of indirect restorations.  Normal 0 false false false EN-US JA AR-SA Study on Desulfurization Flue Gas Continuous Emission Monitoring System (CEMS) Renovation%脱硫烟气在线监测系统(CEMS)改造探讨

    Institute of Scientific and Technical Information of China (English)

    汪朝阳; 姚瑛瑛

    2015-01-01

    The article introduces continuous emission monitoring system (CEMS) classification and all kinds of measurement systems’ characteristics. It also analyzes flue gas CEMS current situation and existing problems through advantages and disadvantages comparison of different type CEMS and puts forward renovation solution. Renovation improves CEMS equipment stable operation and achieves energy-saving and emission-reducing.%介绍了烟气在线监测系统(CEMS)的分类及各类测量系统的特点,对不同种类CEMS优缺点进行比较,分析了烟气在线监测系统(CEMS)的现状及存在的问题,并提出了改造提出方案,通过改造提高了CEMS设备运行的可靠性,实现了节能减排和环保双赢的目的。

  12. The Pre-diagosis Technology of Faults in CEMS%CEMS系统故障预诊断技术

    Institute of Scientific and Technical Information of China (English)

    吕国军

    2010-01-01

    CEMS(烟气排放连续监测系统)已广泛应用在环保事业中,文中阐述了CEMS系统的故障预诊断技术,通过系统的各种表征信息,预诊断将出现的问题,确保提前进行处理,保证设备的长期稳定运行.

  13. Cementos de ionómero de vidrio. A propósito del cemento Ketak-Cem (Espe)

    OpenAIRE

    Casanellas Bassols, Josep M. (Josep Maria); NAVARRO, J. L.; Espías Gómez, Ángel F. (Ángel Fortunato)

    1999-01-01

    En este artículo se describen los cementos de ionómero de vidrio, de forma muy exhaustiva. Se estudia su composición química, sus propiedades, su manejo clínico, y sus indicaciones y contraindicaciones. Finalmente también se describe uno de los cementos de ionómero de vidrio más conocidos y de uso más frecuente, el cemento Ketac Cem ®.

  14. Adhesion of Streptococcus Mutans to Glass Ionomer, BisCem Cement and Enamel: An in Vitro Study

    OpenAIRE

    Ezzatollah Jalalian; Ghazal Mofrad; Sogol Ahmadpour

    2015-01-01

    Objectives: Considering the adhesion of some microorganisms such as Streptococcus mutans (S. mutans) to restorative materials and the unrecognized consequences of this phenomenon, and due to the controversies in this regard, it is important to discover the materials to which the lowest adhesion of S. mutans occurs. The objective of this study was to assess the level of adhesion of S. mutans to glass ionomer (GI), BisCem Cement and enamel.Materials and Methods:In this in vitro experimental stu...

  15. Nano-structure analysis of Fe implanted SnO2 films by 57Fe and 119Sn CEMS

    Science.gov (United States)

    Nomura, Kiyoshi; Reuther, Helfried

    2009-06-01

    SnO2 films were implanted with 57Fe at substrate temperatures of room temperature and 300°C. The chemical states of Fe and Sn were characterized by 57Fe CEMS and 119Sn CEMS, respectively. The implanted Fe species exist as Fe(II) and Fe(III) in SnO2 films, which also are reduced into Sn(II)on the implanted surface. The as prepared and post annealed at 500°C samples did not show Kerr effect, but the sample implanted with 1 × 1017 Fe ions/cm2 at 300°C showed Kerr effect although magnetic sextets were not clearly observed in the 57Fe CEM spectra. The Kerr effect disappeared after annealing. It suggests that the number of magnetic defects decreases by absorption of oxygen. Magnetic relaxation appeared in the case of low implantation of 5 × 1016 Fe ions/cm2, which is considered to be due to anti-ferromagnetism or paramagnetic relaxation.

  16. Experimental results from CEM-UTS single shot 9 mj railgun

    Energy Technology Data Exchange (ETDEWEB)

    Hayes, R.J.; Zowarka, R.C. (Texas Univ., Austin, TX (United States). Center for Electromechanics)

    1991-01-01

    The Center for Electromechanics at the University of Texas at Austin (CEM-UT) has designed and fabricated a 10-m long 90 mm bore railgun. During the test program, a number of solid armatures and projectile packages have been tested in a 50 m deep vertical test range. The experiments are powered by six homopolar generator (HPG) charged inductive stores, sequentially staged to provide the desired acceleration profile. Prior to testing, computer simulations are run to determine the preferred current profile and predict system performance. During projectile flight, high speed films, x-rays, muzzle volts, and velocity/acceleration profiles are recorded along with power supply operating parameters. Postshot diagnostics include bore wear analysis and armature and target recovery. Comparisons of predicted and recorded shot performance are also made. On selected tests, an energy balance is performed to determine efficiencies of the various system components. In this paper, a summary of all 90 mm gun shots is presented along with critical data collected from selected tests.

  17. The CEM-UT rapid fire compulsator railgun system; Recent performance and development milestones

    Energy Technology Data Exchange (ETDEWEB)

    Perkins, D.E.; Pratap, S.B.; Spann, M.L.; Thelen, R.F.; Werst, M.D. (Texas Univ., Austin, TX (United States). Center for Electromechanics)

    1991-01-01

    A test program for the rapid fire compensated pulsed alternator (compulsator) railgun system at the Center for Electromechanics at The University of Texas at Austin (CEM-UT) commenced in April 1986. Two years later, performance data generated in the period from the start of testing to December 1987 was presented at the 4th Symposium on Electromagnetic Launch Technology in Austin, TX. Since that time, 27 compulsator powered railgun experiments have been performed including a 1.0-MJ discharge at 3,510 rpm. In this test, a 724 kA current pulse accelerated an 80 g, aluminum armature to 2.05 km/s, thus exceeding the projectile velocity goal at 73% rated machine speed. Furthermore, operation with a single gun barrel has been achieved using a parallel path, solid-state closing switch to deliver 132 kA to the railgun injector. This paper presents data from the rapid fire compulsator railgun facility. Included is a discussion of the energy transfer, power output, and system efficiency during a 1.0 MJ discharge. Also shown are the injector current, voltage, and di/dt curves for this test which were used in the design of the solid-state closing switch. Results of railgun experiments using the solid-state switch are analyzed.

  18. Production of Energetic Light Fragments in CEM, LAQGSM, and MCNP6

    CERN Document Server

    Mashnik, Stepan G; Gudima, Konstantin K; Sierk, Arnold J; Bull, Jeffrey S; James, Michael R

    2016-01-01

    We extend the cascade-exciton model (CEM), and the Los Alamos version of the quark-gluon string model (LAQGSM), event generators of the Monte-Carlo N-particle transport code version 6 (MCNP6), to describe production of energetic light fragments (LF) heavier than 4He from various nuclear reactions induced by particles and nuclei at energies up to about 1 TeV/nucleon. In these models, energetic LF can be produced via Fermi break-up, preequilibrium emission, and coalescence of cascade particles. Initially, we study several variations of the Fermi break-up model and choose the best option for these models. Then, we extend the modified exciton model (MEM) used by these codes to account for a possibility of multiple emission of up to 66 types of particles and LF (up to 28Mg) at the preequilibrium stage of reactions. Then, we expand the coalescence model to allow coalescence of LF from nucleons emitted at the intranuclear cascade stage of reactions and from lighter clusters, up to fragments with mass numbers A < ...

  19. 119Sn CEMS study of Sb doped SnO2 film

    Science.gov (United States)

    Nomura, K.; Kuzmann, E.; Garg, V. K.; de Oliveira, A. C.; Stichleutner, S.; Homonnay, Z.

    2016-12-01

    Sb doped SnO2 films prepared by DC sputtering and heating were characterized by 119Sn conversion electron Mössbauer spectrometry (CEMS). An asymmetric doublet was observed in the Mössbauer spectra of 1 %, 3 %, and 10 % Sb doped SnO2 films. The peak ratios of doublets are considered to be due to the columnar crystal growth on the substrate. With the doping level of Sb, both the isomer shift ( δ) and the quadrupole splitting (Δ) increased. After annealing, δ increased and Δ decreased for each sample. These results suggest the followings. The electron doping of the SnO2 lattice by pentavalent Sb induces the increase of the electron density at the SnIV nucleus. The annealing process leads to more complete accommodation of the Sb dopant that results in more effective electron doping and therefore increasing isomer shift for tin. Simultaneously, the distortion of the lattice caused by Sb is relaxed and the quadrupole splitting decreases.

  1. Innovative Building Material - Reduction of Air Pollution through TioCem®

    Science.gov (United States)

    Bolte, G.

    In many European cities air quality is a massive problem. Besides the particulate matter, nitrogen oxides (NOX) and volatile organic compounds (VOC) are mainly responsible for the heavy pollution. Motivation to “do something” to protect the environment and climate is increasing constantly. Pollutants such as nitrogen oxides can be oxidized by means of photolysis. With the help of photocatalytic active particles this effect can be accelerated extensively. Photocatalytic active particles dispersed in the concrete turn it into an air pollutant reducing surface. Pollutants getting in contact with the concrete surface are decomposed or oxidized and therewith rendered harmless. This brand new technique is introduced into building industry with a new label “TX Active®“. A premium brand cement for the production of photo catalytically active concrete products - TX Active® products - is now available in the form of TioCem®. This cement can effectively contribute to air purification by using in numerous concrete components such as pavement, roof tiles, facade plates, concrete road surfaces, mortars etc.

  2. cemA homologue essential to CO2 transport in the cyanobacterium Synechocystis PCC6803.

    Science.gov (United States)

    Katoh, A; Lee, K S; Fukuzawa, H; Ohyama, K; Ogawa, T

    1996-04-30

    We have isolated mutants of Synechocystis PCC6803 that grew very slowly in a low-sodium medium, which is unfavorable for HCO3(-) transport, and examined two of these mutants (SC1 and SC2) for their ability to take up CO2 and HCO3(-) in the light. The CO2 transport activity of SC1 and SC2 was much lower than that of the wild type (WT), whereas there was no difference between the mutants and the WT in their activity of HCO3(-) transport. A clone containing a 3.9-kilobase-pair insert DNA that transforms both mutants to the WT phenotype was isolated from a genomic library of WT Synechocystis. Sequencing of the insert DNA in the region of mutations in SC1 and SC2 revealed an open reading frame (designated cotA), which showed significant amino-acid sequence homology to cemA encoding a protein found in the inner envelope membrane of chloroplasts. The cotA gene is present in a single copy and was not cotranscribed with any other gene(s). cotA encodes a protein of 247 amino acids containing four transmembrane domains. There was substitution of a single base in SC1 and two bases in SC2 in their cotA genes. A possible role of the cotA gene product in CO2 transport is discussed.

  3. Dexamethasone-induced and estradiol-induced CREB activation and annexin 1 expression in CCRF-CEM lymphoblastic cells: evidence for the involvement of cAMP and p38 MAPK

    Directory of Open Access Journals (Sweden)

    M. Castro-caldas

    2003-01-01

    Full Text Available Aims: Annexin 1 (ANXA1, a member of the annexin family of calcium-binding and phospholipid-binding proteins, is a key mediator of the anti-inflammatory actions of steroid hormones. We have previously demonstrated that, in the human lymphoblastic CCRF-CEM cell line, both the synthetic glucocorticoid hormone, dexamethasone (Dex, and the estrogen hormone, 17β-estradiol (E2β, induce the synthesis of ANXA1, by a mechanism independent of the activation of their nuclear receptors. Recently, it was reported that the gene coding for ANXA1 contains a cAMP-responsive element (CRE. In this work, we investigated whether Dex and E2β were able to induce the activation of CRE binding proteins (CREB in the CCRF-CEM cells. Moreover, we studied the intracellular signalling pathways involved in CREB activation and ANXA1 synthesis in response to Dex and E2β; namely, the role of cAMP and the p38 mitogen-activated protein kinase (MAPK.

  4. Multiple centrosomal microtubule organising centres and increased microtubule stability are early features of VP-16-induced apoptosis in CCRF-CEM cells.

    Science.gov (United States)

    Pittman, S; Geyp, M; Fraser, M; Ellem, K; Peaston, A; Ireland, C

    1997-06-01

    Microtubular reorganisation contributing to apoptotic morphology occurs in normal and neoplastic cells undergoing apoptosis induced by cytotoxic drugs [1-3]. The aim of this study was to correlate the changes in the microtubules (MTs) with behavior of the centrosome in apoptotic cells, and to see whether post-translational changes in tubulin occurred with the emergence of apoptotic MT bands. Apoptosis was induced in the human T-cell leukaemia line (CCRF-CEM) by treatment with 17 microM etoposide over a 4 h period. The time course of changes was assessed using flow cytometry (FCM) and immunocytochemistry in cells labelled for a centrosomal antigen (CSP-alpha) or alpha-tubulins. One hour following treatment we observed multiple centrosomal microtubule organising centres (MTOCs) associated with the nucleus and the transient appearance of a subset of stable MTs detected with an antibody specific for acetylated alpha-tubulin, as the bands of MTs which lobulate the nucleus are formed. The altered properties of the MTs thus reflect changes in function as apoptosis progresses.

  5. Histopathologic Responses of the Dental Pulp to Calcium-Enriched Mixture (CEM) and Mineral Trioxide Aggregate (MTA) in Diabetic and Non-Diabetic Rats.

    Science.gov (United States)

    Madani, Zahra Sadat; Haddadi, Azam; Mesgarani, Abbas; Seyedmajidi, Maryam; Mostafazadeh, Amrollah; Bijani, Ali; Ashraphpour, Manouchehr

    2014-01-01

    Diabetes mellitus is a chronic disease which affects the healing ability of the pulp and periodontium. The aim of the present study was to assess the histopathologic response of dental pulp to pulp capping using MTA or CEM cement in diabetic rats. Thirty two Wistar male rats aged between 8 and 10 weeks (weight: 200-250g) were divided into two groups of diabetic (n=16) and healthy (n=16) animals and then subdivided into MTA and CEM subgroups. In each group, 10 MTA treated, 10 CEM treated and 12 intact (without any intervention) teeth were analyzed. Intact teeth were considered as a baseline inflammation control. Then, class I cavity was made in the maxillary first molars teeth with pinpoint pulpal exposure. Either MTA or CEM cement was then placed over exposed pulp as pulp capping agent and the cavities were restored using resin- modified glass ionomer cement. Both teeth of rats in subgroups remained intact without any intervention. After four weeks, the rats were sacrificed and the teeth were subjected to histological evaluation in terms of inflammation intensity, dentin bridge formation and dentin bridge continuity. The CEM cement treated diabetic rats exhibited a significant higher inflammatory response when compared to healthy control group (P=0.004) whereas, MTA treated diabetic rats did not exhibit a significant higher inflammatory response in comparison to healthy controls. There was no significant difference between MTA and CEM cement in the induction of dentin bridge formation in diabetic and healthy controls. This preliminary study suggests that MTA is a superior dental material than CEM cement for pulp therapy in subjects with diabetes.

  6. Non-aqueous CE-MS of cinchona alkaloids - characterization of a novel CE-ESI-MS interface

    DEFF Research Database (Denmark)

    Hansen, Frederik André; Hansen, Steen Honoré; Petersen, Nickolaj J.

    the composition of alkaloids in Cinchona bark. One common problem for sheatless interfaces for CE-MS has been establishing a stable electric contact at the end of the separation capillary that does not induce band broadening or affect the spray stability. In our device the electric contact is generated through....... Furthermore, the increased conductivity of the buffer in the fracture generates field free pumping of the analytes towards the ESI spray tip. In this study the device was used to analyze the four major alkaloids (diastereomeric pairs of quinine/quinidine and cinchonine/cinchonidine) in Cinchona bark samples...

  7. 脱硫CEMS故障统计及技术研究%Fault Statistics and Technology Research on FGD CEMS

    Institute of Scientific and Technical Information of China (English)

    许勇毅; 查智明; 黄齐顺

    2014-01-01

    在相关研究的基础上对两大类别不同类型烟气在线监测系统(CEMS)的性能指标进行对比研究,开展CEMS故障时长对比分析和不同类型机组及不同脱硫模式对CEMS故障率的影响研究,探讨负荷、煤种波动对CEMS故障率的影响,并就系统在运行应用方面存在的问题提出改进意见.

  8. The Civitavecchia Coastal Environment Monitoring System (C-CEMS): an integrated approach to the study of coastal oceanographic processes

    Science.gov (United States)

    Marcelli, Marco; Piermattei, Viviana; Madonia, Alice; Bonamano, Simone; Martellucci, Riccardo; Pierattini, Alberto; Albani, Marta; Borsellino, Chiara; Zappalà, Giuseppe

    2015-04-01

    The study of the physical and biological processes of the coastal environment, characterized by high spatial and time variability, requires the adoption of multidisciplinary strategies of investigation that takes into account, not only the biotic and abiotic components of coastal marine ecosystems, but also the terrestrial, atmospheric and hydrological features linked to them. The understanding of coastal environment is fundamental to face efficiently and effectively the pollution phenomena, as expected by Marine Strategy (2008/56 EC) Directive, which is focused on the achievement of GES by 2020 in all Member States. Following these lines, the Laboratory of Experimental Oceanology and Marine Ecology (University of Tuscia) has developed a multi-platform observing network (the Civitavecchia Coastal Environment Monitoring System, C-CEMS) that operates since 2005 in the coastal marine area of Civitavecchia (northern Tyrrhenian Sea, Italy), where multiple uses (industrial, commercial and tourist activities) and high ecological values (Posidonia oceanica meadows, hard-bottom benthic communities, priority species, etc.) closely coexist. Furthermore, in the last years the Civitavecchia harbour, which is one of the main ports of Europe, has been subjected to a series of expansion works that could impact significantly on the coastal environment. The C-CEMS, implemented in the current configuration, is composed by five main modules (fixed stations, in-situ measurements and samplings, satellite observations, numerical models, GIS) which provide integrated informations to be used in different fields of the environmental research. The fixed stations system controls one weather, two water quality and two wave-buoy stations along the coast. In addition to the long term observations acquired by the fixed stations (L-TER), in situ surveys are periodically carried out for the monitoring of the physical, chemical and biological characteristics of the water column and marine sediments

  9. Buttressing staples with cholecyst-derived extracellular matrix (CEM) reinforces staple lines in an ex vivo peristaltic inflation model.

    LENUS (Irish Health Repository)

    Burugapalli, Krishna

    2008-11-01

    Staple line leakage and bleeding are the most common problems associated with the use of surgical staplers for gastrointestinal resection and anastomotic procedures. These complications can be reduced by reinforcing the staple lines with buttressing materials. The current study reports the potential use of cholecyst-derived extracellular matrix (CEM) in non-crosslinked (NCEM) and crosslinked (XCEM) forms, and compares their mechanical performance with clinically available buttress materials [small intestinal submucosa (SIS) and bovine pericardium (BP)] in an ex vivo small intestine model.

  10. A comparison between gray and white mineral trioxide aggregate (MTA and calcium enriched mixture (CEM cytotoxicity in L929 and Saos-2 cell lines

    Directory of Open Access Journals (Sweden)

    Robab Farhang

    2016-12-01

    Full Text Available The purpose was to compare the cytotoxic effects of two commonly used mineral trioxide aggregate (MTA (gray & white with the recently introduced calcium enriched mixture (CEM in L929 and Saos-2 cell lines and to determine the oxidative stressinduced by each cement. Sterile discs of each cement were submerged and incubated in complete media for 24, 48 and 72-h. The cell lines were exposed to two fold serial dilutions (1, 0.5, 0.25 X of each extract. In addition to trypan blue (TB dye exclusion test, MTT assay was carried out after 24-h. To determine the oxidative stress mediated cell toxicity, malondialdehyde (MDA concentration and total ferric reduction activity potential (FRAP were measured in the media.The MTT and TB results with 48-h and 72-h CEM extracts showed that both extracts are cytotoxic in L929 cell line at 1 X and 0.5 X dilutions, while neither white MTA (WMTA nor gray MTA (GMTA showed any toxic effects in this cell line. On the other hand all three cements (undiluted 48-h and 72-h extracts were cytotoxic against Saos-2 cell line. The oxidative stress marker (MDA was proportionate to the cytotoxic effects of CEM while there was no significant changes in reductive capacity of the media measured by FRAP in both cell lines.The cytotoxic effects of CEM on L929 and Saos-2 cell lines seems to be higher than WMTA and GMTA and it is increased by the time of extraction up to 72-h.. However, CEM, WMTA and GMTA showed similar toxic effect in Saos-2 cell line proportionate to the oxidative stress measured by TBARS. It seems that while all three cements extracts don't change the antioxidant activity of the media, they could significantly increase lipid peroxidation, especially CEM with Saos-2 cell line which elucidate triggering oxidative stress mechanisms without having direct oxidative activity.

  11. Transcriptional upregulation of both egl-1 BH3-only and ced-3 caspase is required for the death of the male-specific CEM neurons.

    Science.gov (United States)

    Nehme, R; Grote, P; Tomasi, T; Löser, S; Holzkamp, H; Schnabel, R; Conradt, B

    2010-08-01

    Most of the 131 cells that die during the development of a Caenorhabditis elegans hermaphrodite do so approximately 30 min after being generated. Furthermore, in these cells, the pro-caspase proCED-3 is inherited from progenitors and the transcriptional upregulation of the BH3-only gene egl-1 is thought to be sufficient for apoptosis induction. In contrast, the four CEM neurons, which die in hermaphrodites, but not males, die approximately 150 min after being generated. We found that in the CEMs, the transcriptional activation of both the egl-1 and ced-3 gene is necessary for apoptosis induction. In addition, we show that the Bar homeodomain transcription factor CEH-30 represses egl-1 and ced-3 transcription in the CEMs, thereby permitting their survival. Furthermore, we identified three genes, unc-86, lrs-1, and unc-132, which encode a POU homeodomain transcription factor, a leucyl-tRNA synthetase, and a novel protein with limited sequence similarity to the mammalian proto-oncoprotein and kinase PIM-1, respectively, that promote the expression of the ceh-30 gene in the CEMs. On the basis of these results, we propose that egl-1 and ced-3 transcription are coregulated in the CEMs to compensate for limiting proCED-3 levels, which most probably are a result of proCED-3 turn over. Similar coregulatory mechanisms for BH3-only proteins and pro-caspases may function in higher organisms to allow efficient apoptosis induction. Finally, we present evidence that the timing of the death of the CEMs is controlled by TRA-1 Gli, the terminal global regulator of somatic sexual fate in C. elegans.

  12. Exposure of CCRF-CEM cells to acridone derivative 8a triggers tumor death via multiple mechanisms.

    Science.gov (United States)

    Wang, Yini; Gao, Dan; Chu, Bizhu; Gao, Chunmei; Cao, Deliang; Liu, Hongxia; Jiang, Yuyang

    2016-04-01

    A newly synthesized acridone derivative 8a shows potent antitumor activity against CCRF-CEM leukemia cells. Herein, the first proteomic study of 8a effects in CCRF-CEM cells was performed by 2D nano-LC-ESI-MS/MS to better understand the mechanisms of action of 8a. Data analyses based on PLGS, STRING, Cytoscape, and database for annotation, visualization, and integrated discovery identified 55 proteins that were differentially expressed in response to 8a exposure. Multiple cellular pathways were affected, including chromatin organization, energy metabolism, DNA repair, oxidative-stress, and apoptosis. The changes in protein expression were further verified for PKM2. Moreover, 8a lowered down the expression of HEX and PFK-1. Lactate production was decreased in 8a-treated cells, indicating suppression of glycolysis. The elevated XRCC6 and decreased histone expression levels suggested increased DNA damage in 8a-treated cells, which was confirmed by the increased γ-H2AX foci. Molecular docking of 8a with DNA demonstrated direct interactions of 8a with DNA through three hydrogen bonds and four π-π interactions, potentially explaining the mode of action that 8a damaged to DNA. The differential protein profiling and dysfunction of metabolic pathways induced by 8a provide novel insights into the potential action mechanisms of 8a.

  13. Growth of ultra-thin FeO(100) films on Ag(100): A combined XPS, LEED and CEMS study

    Energy Technology Data Exchange (ETDEWEB)

    Abreu, G.J.P., E-mail: guilafis@gmail.com [Department of Physics, Penn State University, University Park, Pennsylvania 16802 (United States); Depto. de Física, ICEx, Universidade Federal de Minas Gerais, CP702 Belo Horizonte - MG (Brazil); Paniago, R.; Pfannes, H.-D. [Depto. de Física, ICEx, Universidade Federal de Minas Gerais, CP702 Belo Horizonte - MG (Brazil)

    2014-01-15

    The production and characterization of ultra-thin iron oxide films grown on an atomically clean Ag(100) surface by molecular beam epitaxy (MBE) is presented. The goal of this work was to prepare ultra-thin FeO(100) with excellent crystallographic quality. The films were prepared with high purity {sup 57}Fe and O{sub 2} and afterwards analyzed in situ by means of Low Energy Electron Diffraction (LEED), X-Ray Photoelectron Spectroscopy (XPS) and Conversion Electron Mössbauer Spectroscopy (CEMS). During preparation the evaporation rate, the O{sub 2} partial pressure, film thickness and annealing procedures were varied. The analysis of the various samples showed that in general a mixture of FeO and Fe{sub 3}O{sub 4} phases is obtained. We determined the best conditions to produce the desired oxide (FeO). Besides the paramagnetic phase, the antiferromagnetic phase of the FeO films was characterized by low temperature Mössbauer spectra. - Highlights: • Highly ordered iron oxide ultra-thin film was grown on Ag(100) single crystal. • The samples were submitted to annealing at various temperatures. • The changes in the iron oxide phases were checked by LEED, XPS and CEMS. • The best conditions to prepare the wüstite and magnetite phases were determined.

  14. Cem-Ostetic/rhBMP-2复合物促进即刻种植体周围骨组织再生的研究%Study on Cem-Ostetic/rhBMP-2 Complex to Promote Bone Regeneration around Immediate Implants

    Institute of Scientific and Technical Information of China (English)

    郭盛; 史久慧; 王屹博; 丁超

    2011-01-01

    目的:研究Cem- Ostetic/rhBMP-2对即刻种植骨缺损修复的生物学特性.方法:将6只狗随即分成2组,拔除犬双侧下颌第二、三、四前磨牙,即刻植入种植体,每个种植体颊侧制备标准缺损,分别植入Cem- Ostetic/rhBMP-2、Cem- Ostetic、自体骨.术后6、12周分期处死,进行大体、影像学、组织学观测.结果:术后6、12周各组均有不同程度的骨组织再生.各个时期观察显示Cem- Ostetic/rhBMP-2组新生骨与种植体间的骨结合较其他组多.结论:Cem-Ostetic/rhBMP-2能有效促进种植体周围骨缺损修复,并促进种植体-骨界面形成较完善的骨整合.%Objective: To study the biologic effects of Cem-Ostetic/BMP-2 in rehabilitating bone defects during immediate implantation. Methods: Six dogs were divided into two groups randomly. We extracted each dog mandib-ular second third and fourth premolars to create edentulous regions. Immediate implantation was placed in the medial root site. Standard bone defects were prepared on the buccal side of the implants. The defects were filled with a composite consisting of Cem-Ostetic/rhBMP-2 , autologous bone graft and pure Cem-Ostetic. At 6 weeks and 12 weeks postoperative, the dogs were sacrificed for clinical check, radiological, and histological analysis. Results: At 6,12 weeks, various amount of new bone appeared in each group. Each time observation demonstrated that Cem - Ostetic/BMP-2 group had more new bone and osseointegration than the other groups. Conclusion: The Cem - Ostetic/ rhBMP - 2 composite can effectively accelerate the reconstruction of peri-implant bone defects and improve the osseointegration at the interface between the implant and bone.

  15. Cytotoxicity of two available mineral trioxide aggregate cements and a new formulation on human gingival fibroblasts

    Science.gov (United States)

    Torshabi, Maryam; Amid, Reza; Kadkhodazadeh, Mahdi; Shahrbabaki, Sara Eslami; Tabatabaei, Fahimeh S.

    2016-01-01

    Aim: The purpose of this study was to investigate the cytotoxicity of nanohybrid mineral trioxide aggregate (MTA) in comparison with calcium-enriched mixture (CEM) cement and MTA-Angelus, using human gingival fibroblasts (HGFs). Materials and Methods: Nine disc-shaped specimens of each material (in 2 set stat: A, set for 24 h; B, set for 30 min; and C, fresh stat) were prepared. HGFs were exposed to tested materials’ extracts or control media. Cytotoxicity testing was performed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazoliumbromide assay in two time intervals. Statistical Analysis: Results were evaluated by one-way ANOVA and t-test. Statistical significance was set at P < 0.05. Results: CEM cement demonstrated favorable cell viability values when completely set (24 h set MTA = 24 h set CEM) at both time intervals. Interestingly, 24 h after incubation, CEM in Groups B and C demonstrated higher cell viability values than MTA (P < 0.05). However, after 72 h of incubation, these groups of CEM and MTA showed equal cell viability. All samples of nanohybrid MTA had slight cytotoxic effects after 24 h of incubation, and moderate cytotoxic effects after 72 h of incubation. Conclusion: Set CEM and set MTA-Angelus exerted similar, favorable effects on cell viability. However, within the limitations of this in vitro study, the results suggest that nanohybrid MTA could not be recommended as a material of choice for cervical root resorption. PMID:27994312

  16. Influence of hybridization in the Magnetic Circular X-ray Dichroism at the Ce-M4,5 absorption edges of Ce-Fe systems

    NARCIS (Netherlands)

    Finazzi, M.; de Groot, F.M.F.; Dias, A.-M.; Kappler, J.-P.; Schulte, O.; Felsch, W.; Krill, G.

    2013-01-01

    We have performed a Magnetic Circular X-ray Dichroism (XMCD) study at the Ce-M*,s absorption edges on some Ce-Fe systems. We find that the dichroism signal in these systems is very sensitive to the degree of hybridization of the 4f electrons with the valence band. XMCD is able to demonstrate that th

  17. Influence of hybridization in the magnetic circular X-ray dichroism at the Ce-M(4,5) absorption edges of Ce-Fe systems

    NARCIS (Netherlands)

    Finazzi, M; deGroot, FMF; Dias, AM; Kappler, JP; Schulte, O; Felsch, W; Krill, G

    1996-01-01

    We have performed a Magnetic Circular X-ray Dichroism (XMCD) study at the Ce-M(4,5) absorption edges on some Ce-Fe systems. We find that the dichroism signal in these systems is very sensitive to the degree of hybridization of the 4f electrons with the valence band. XMCD is able to demonstrate that

  18. Growth of ultra-thin FeO(100) films on Ag(100): A combined XPS, LEED and CEMS study

    Science.gov (United States)

    Abreu, G. J. P.; Paniago, R.; Pfannes, H.-D.

    2014-01-01

    The production and characterization of ultra-thin iron oxide films grown on an atomically clean Ag(100) surface by molecular beam epitaxy (MBE) is presented. The goal of this work was to prepare ultra-thin FeO(100) with excellent crystallographic quality. The films were prepared with high purity 57Fe and O2 and afterwards analyzed in situ by means of Low Energy Electron Diffraction (LEED), X-Ray Photoelectron Spectroscopy (XPS) and Conversion Electron Mössbauer Spectroscopy (CEMS). During preparation the evaporation rate, the O2 partial pressure, film thickness and annealing procedures were varied. The analysis of the various samples showed that in general a mixture of FeO and Fe3O4 phases is obtained. We determined the best conditions to produce the desired oxide (FeO). Besides the paramagnetic phase, the antiferromagnetic phase of the FeO films was characterized by low temperature Mössbauer spectra.

  19. Overview and Validation of the CEM and LAQGSM Event Generators for MCNP6, MCNPX, and MARS15

    CERN Document Server

    Mashnik, Stepan G

    2008-01-01

    A brief description of the IntraNuclear cascade, preequilibrium, evaporation, fission, coalescence, and Fermi breakup models used by the last versions of our CEM and LAQGSM event generators is presented, with a focus on our latest development of all these models. The recently developed "S" and "G" versions of our codes, that consider multifragmentation of nuclei formed after the preequilibrium stage of reactions when their excitation energy is above 2A MeV using the Statistical Multifragmentation Model (SMM) code by Botvina et al. ("S" stands for SMM) and the fission-like binary-decay model GEMINI by Charity ("G" stands for GEMINI), respectively, are overviewed as well. Examples of benchmarking our models against a large variety of experimental data on particle-particle, particle nucleus, and nucleus-nucleus reactions, involving some very recent measurements of interest to accelerator radiation induced activation, are discussed.

  20. Pharmacological, molecular, and cytogenetic analysis of "atypical" multidrug-resistant human leukemic cells.

    Science.gov (United States)

    Beck, W T; Cirtain, M C; Danks, M K; Felsted, R L; Safa, A R; Wolverton, J S; Suttle, D P; Trent, J M

    1987-10-15

    We previously described the cross-resistance patterns and cellular pharmacology of a human leukemic cell line, CEM/VM-1, selected for resistance to the epipodophyllotoxin teniposide (M. K. Danks et al., Cancer Res., 47: 1297-1301, 1987). Compared to CEM/VLB100, which is a well characterized "classic" multidrug-resistant (MDR) cell line, the CEM/VM-1 cells display "atypical" multidrug resistance (at-MDR) in that they are cross-resistant to a wide variety of natural product antitumor drugs, except the Vinca alkaloids, and they are not impaired in their ability to accumulate radiolabeled epipodophyllotoxin. We have extended our characterization of this at-MDR cell line in the present study. In comparison to CEM/VLB100 cells, we found that CEM/VM-1 cells are not cross-resistant to either actinomycin D or colchicine. Verapamil and chloroquine, which enhance the cytotoxicity of vinblastine in CEM/VLB100 cells, had little or no ability to do so in the CEM/VM-1 cells. Membrane vesicles of the two resistant sublines were examined for overexpression of the MDR-associated plasma membrane protein (P-glycoprotein, Mr 170,000 protein, or 180,000 glycoprotein) by photoaffinity labeling with the vinblastine analogue N-(p-azido[3-125I]salicyl)-N'-beta-aminoethylvindesine. We were unable to visualize the MDR-associated protein in the CEM/VM-1 membranes with this photoaffinity probe under conditions in which the P-glycoprotein was readily seen in the membranes of CEM/VLB100 cells. Furthermore, no hybridization of the pMDR1 complementary DNA was seen in slot-blot analyses of the RNA from at-MDR cells, indicating that the mdr gene coding for P-glycoprotein is not overexpressed as is the case in the classic MDR cells. However, cytogenetic analysis indicated that the CEM/VM-1 cells contained an abnormally banded region on chromosome 13q, suggesting that a gene other than mdr may be amplified in these cells. Thus, despite the two cell lines having approximately equal degrees of resistance

  1. Epigenetic reprogramming of UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE) in HIV-1-infected CEM T cells.

    Science.gov (United States)

    Giordanengo, Valerie; Ollier, Laurence; Lanteri, Marion; Lesimple, Josette; March, Denise; Thyss, Sylvain; Lefebvre, Jean-Claude

    2004-12-01

    Sialylated glycoconjugates mediate several key lymphocyte functions. We previously reported that hyposialylation occurred in latently HIV-1-infected CEM T cells, despite the fully preserved catalytic activity of several sialyltransferases. We show now that these cells are affected by a down-regulation of UDP-N-acetylglucosamine 2-epimerase/N-acetylmannosamine kinase (GNE), which leads to a dramatic decrease in the synthesis of CMP-sialic acid, the donor substrate of all sialyltransferases. The GNE gene promoter was found to be located in a CpG island with several regulatory motifs CREB, SP1, and AP-2. De novo hypermethylation of this promoter was observed in HIV-1-infected CEM cells. This phenomenon might explain some immunological disorders that persist in infected individuals despite long-term therapeutically controlled viral replication. Indeed, an overall decrease in sialic acid engraftment can affect glycoproteins, notably those in which the sialylation status is crucial to ensure homing, recirculation, and survival of lymphocytes.

  2. Feasibility of using Clinical Element Models (CEM to standardize phenotype variables in the database of genotypes and phenotypes (dbGaP.

    Directory of Open Access Journals (Sweden)

    Ko-Wei Lin

    Full Text Available The database of Genotypes and Phenotypes (dbGaP contains various types of data generated from genome-wide association studies (GWAS. These data can be used to facilitate novel scientific discoveries and to reduce cost and time for exploratory research. However, idiosyncrasies and inconsistencies in phenotype variable names are a major barrier to reusing these data. We addressed these challenges in standardizing phenotype variables by formalizing their descriptions using Clinical Element Models (CEM. Designed to represent clinical data, CEMs were highly expressive and thus were able to represent a majority (77.5% of the 215 phenotype variable descriptions. However, their high expressivity also made it difficult to directly apply them to research data such as phenotype variables in dbGaP. Our study suggested that simplification of the template models makes it more straightforward to formally represent the key semantics of phenotype variables.

  3. Feasibility of using Clinical Element Models (CEM) to standardize phenotype variables in the database of genotypes and phenotypes (dbGaP).

    Science.gov (United States)

    Lin, Ko-Wei; Tharp, Melissa; Conway, Mike; Hsieh, Alexander; Ross, Mindy; Kim, Jihoon; Kim, Hyeon-Eui

    2013-01-01

    The database of Genotypes and Phenotypes (dbGaP) contains various types of data generated from genome-wide association studies (GWAS). These data can be used to facilitate novel scientific discoveries and to reduce cost and time for exploratory research. However, idiosyncrasies and inconsistencies in phenotype variable names are a major barrier to reusing these data. We addressed these challenges in standardizing phenotype variables by formalizing their descriptions using Clinical Element Models (CEM). Designed to represent clinical data, CEMs were highly expressive and thus were able to represent a majority (77.5%) of the 215 phenotype variable descriptions. However, their high expressivity also made it difficult to directly apply them to research data such as phenotype variables in dbGaP. Our study suggested that simplification of the template models makes it more straightforward to formally represent the key semantics of phenotype variables.

  4. Production of energetic light fragments in extensions of the CEM and LAQGSM event generators of the Monte Carlo transport code MCNP6

    Science.gov (United States)

    Mashnik, Stepan G.; Kerby, Leslie M.; Gudima, Konstantin K.; Sierk, Arnold J.; Bull, Jeffrey S.; James, Michael R.

    2017-03-01

    We extend the cascade-exciton model (CEM), and the Los Alamos version of the quark-gluon string model (LAQGSM), event generators of the Monte Carlo N -particle transport code version 6 (MCNP6), to describe production of energetic light fragments (LF) heavier than 4He from various nuclear reactions induced by particles and nuclei at energies up to about 1 TeV/nucleon. In these models, energetic LF can be produced via Fermi breakup, preequilibrium emission, and coalescence of cascade particles. Initially, we study several variations of the Fermi breakup model and choose the best option for these models. Then, we extend the modified exciton model (MEM) used by these codes to account for a possibility of multiple emission of up to 66 types of particles and LF (up to 28Mg) at the preequilibrium stage of reactions. Then, we expand the coalescence model to allow coalescence of LF from nucleons emitted at the intranuclear cascade stage of reactions and from lighter clusters, up to fragments with mass numbers A ≤7 , in the case of CEM, and A ≤12 , in the case of LAQGSM. Next, we modify MCNP6 to allow calculating and outputting spectra of LF and heavier products with arbitrary mass and charge numbers. The improved version of CEM is implemented into MCNP6. Finally, we test the improved versions of CEM, LAQGSM, and MCNP6 on a variety of measured nuclear reactions. The modified codes give an improved description of energetic LF from particle- and nucleus-induced reactions; showing a good agreement with a variety of available experimental data. They have an improved predictive power compared to the previous versions and can be used as reliable tools in simulating applications involving such types of reactions.

  5. CEMS烟气在线连续监测系统常见问题的探讨%Discussion on the Common Problems in CEMS

    Institute of Scientific and Technical Information of China (English)

    苏静; 吴海平; 王金奇

    2011-01-01

    简述CEMS的工作原理,提出CEMS工作中的常见问题,阐述常见问题的现象,剖析常见问题原因,并针对性的提出了应对措施。%This paper describes the principle of CEMS, analyzes the common problems occured in the system working and the reasons as well, and put forward the countermeasures.

  6. Faults Diagnosis of Desulphurization CEMS for Sintering at Bayi Steel & Its Treatment%八钢烧结脱硫CEMS常见故障诊断与处理

    Institute of Scientific and Technical Information of China (English)

    侯杰

    2015-01-01

    文章介绍了八钢烧结脱硫CEMS(烟气排放连续监测系统)的使用情况,在日常运行过程中出现的问题.针对故障现象进行分析与诊断,查找CEMS存在问题并及时有效的排除故障,保证设备的稳定运行.

  7. Some attentive problems in installation and shakedown of direct extraction CEMS%直接抽取式CEMS安装调试中应注意的问题

    Institute of Scientific and Technical Information of China (English)

    汤龙华

    2005-01-01

    对火电厂直接抽取式烟气连续监测系统(简称CEMS)应用技术进行综述,系统地介绍了直接抽取式CEMS监测的方法、系统安装调试以及日常维护等方面应注意的技术问题.

  8. Baicalein Triggers Mitochondria-Mediated Apoptosis and Enhances the Antileukemic Effect of Vincristine in Childhood Acute Lymphoblastic Leukemia CCRF-CEM Cells

    Directory of Open Access Journals (Sweden)

    Yun-Ju Chen

    2013-01-01

    Full Text Available Acute lymphoblastic leukemia (ALL accounts for approximately 75% of childhood leukemia, and chemotherapy remains the mainstay therapy. Baicalein is an active flavonoid used in traditional Chinese medicine and has recently been found to have anticancer, anti-inflammatory, and antiallergic properties. This study aims to investigate the molecular apoptotic mechanisms of baicalein in CCRF-CEM leukemic cells and to evaluate the combined therapeutic efficacy of baicalein with several commonly used chemotherapeutic drugs in CCRF-CEM cells. Our results demonstrate that baicalein induces mitochondria-dependent cleavage of caspases-9 and -3 and PARP with concomitant decreases in IAP family proteins, survivin, and XIAP. Furthermore, our results present for the first time that baicalein triggers a convergence of the intrinsic and extrinsic apoptotic pathways via the death receptor-caspase 8-tBid signaling cascade in CCRF-CEM cells. In addition, we also present for the first time that the combination of baicalein and vincristine results in a synergistic therapeutic efficacy. Overall, this combination strategy is recommended for future clinical trials in the treatment of pediatric leukemia owing to baicalein’s beneficial effects in alleviating the vomiting, nausea, and skin rashes caused by chemotherapy.

  9. Demonstration of a novel HIV-1 restriction phenotype from a human T cell line.

    Directory of Open Access Journals (Sweden)

    Yanxing Han

    Full Text Available BACKGROUND: Although retroviruses may invade host cells, a productive infection can be established only after the virus counteracts inhibition from different types of host restriction factors. Fv1, APOBEC3G/F, TRIM5alpha, ZAP, and CD317 inhibit the replication of different retroviruses by interfering with viral uncoating, reverse transcription, nuclear import, RNA stability, and release. In humans, although APOBEC3G/3F and CD317 block HIV-1 replication, their antiviral activities are neutralized by viral proteins Vif and Vpu. So far, no human gene has been found to effectively block wild type HIV-1 replication under natural condition. Thus, identification of such a gene product would be of great medical importance for the development of HIV therapies. METHOD AND FINDINGS: In this study, we discovered a new type of host restriction against the wild type HIV-1 from a CD4/CXCR4 double-positive human T cell line. We identified a CEM-derived cell line (CEM.NKR that is highly resistant to productive HIV-1 infection. Viral production was reduced by at least 1000-fold when compared to the other permissive human T cell lines such as H9, A3.01, and CEM-T4. Importantly, this resistance was evident at extremely high multiplicity of infection. Further analyses demonstrated that HIV-1 could finish the first round of replication in CEM.NKR cells, but the released virions were poorly infectious. These virions could enter the target cells, but failed to initiate reverse transcription. Notably, this restriction phenotype was also present in CEM.NKR and 293T heterokaryons. CONCLUSIONS: These results clearly indicate that CEM.NKR cells express a HIV inhibitory gene(s. Further characterization of this novel gene product(s will reveal a new antiretroviral mechanism that directly inactivates wild type HIV-1.

  10. Cytotoxic and apoptotic effects of prenylflavonoid artonin B in human acute lymphoblastic leukemia cells

    Institute of Scientific and Technical Information of China (English)

    Chun-chung LEE; Chun-nan LIN; Guey-mei JOW

    2006-01-01

    Aim: To investigate the anticancer effects and molecular mechanism of artonin B on the human acute lymphoblastic leukemia CCRF-CEM cells compared with other prenylflavonoid compounds. Methods: The effects of four prenylflavonoids on the growth of CCRF-CEM and HaCa cells were studied by 3-(4,5)-2,5-diphenyl-tetrazolium bromide (MTT) assay. Apoptosis were detected through Hoechst 33258 staining. The effect of artonin B on the cell cycle of CCRF-CEM cells were studied by propidium iodide method. The change in mitochondrial membrane potential was detected by rohdamine 123 staining. The cytochrome c release and caspase 3 activity were checked by immunoassay kits, respectively. The expression of Bcl-2 family proteins was detected by Western blot. Results: Our data revealed that artonin B strongly induced human CCRF-CEM leukemia cell death in a dose- and time-dependent manner by MTT assay, but not on normal epithelia cells (HaCa cells). Artonin B-induced cell death was considered to be apoptotic by observing the typical apoptotic morphological change by Hoechst 33258 staining. The induction of human CCRF-CEM leukemia cancer cell death was caused by an induction of apoptosis through mitochondrial membrane potential change, cytochrome c release, sub-G1 proportion increase, downregulation of Bcl-2 expression, upregulation of Bax and Bak expression and activation of caspase 3 pathways. Conclusion: These results clearly demonstrated that artonin B is able to inhibit proliferation by induction of hypoploid cells and cell apoptosis. Moreover, the anticancer effects of artonin B were related to mitochondrial pathway and caspase 3 activation in human CCRF-CEM leukemia cells.

  11. Withania somnifera Induces Cytotoxic and Cytostatic Effects on Human T Leukemia Cells.

    Science.gov (United States)

    Turrini, Eleonora; Calcabrini, Cinzia; Sestili, Piero; Catanzaro, Elena; de Gianni, Elena; Diaz, Anna Rita; Hrelia, Patrizia; Tacchini, Massimo; Guerrini, Alessandra; Canonico, Barbara; Papa, Stefano; Valdrè, Giovanni; Fimognari, Carmela

    2016-01-01

    Cancer chemotherapy is characterized by an elevated intrinsic toxicity and the development of drug resistance. Thus, there is a compelling need for new intervention strategies with an improved therapeutic profile. Immunogenic cell death (ICD) represents an innovative anticancer strategy where dying cancer cells release damage-associated molecular patterns promoting tumor-specific immune responses. The roots of Withania somnifera (W. somnifera) are used in the Indian traditional medicine for their anti-inflammatory, immunomodulating, neuroprotective, and anticancer activities. The present study is designed to explore the antileukemic activity of the dimethyl sulfoxide extract obtained from the roots of W. somnifera (WE). We studied its cytostatic and cytotoxic activity, its ability to induce ICD, and its genotoxic potential on a human T-lymphoblastoid cell line by using different flow cytometric assays. Our results show that WE has a significant cytotoxic and cytostatic potential, and induces ICD. Its proapoptotic mechanism involves intracellular Ca(2+) accumulation and the generation of reactive oxygen species. In our experimental conditions, the extract possesses a genotoxic potential. Since the use of Withania is suggested in different contexts including anti-infertility and osteoarthritis care, its genotoxicity should be carefully considered for an accurate assessment of its risk-benefit profile.

  12. Thermodynamic behavior of 57Fe implanted into ZrO2(Y) by CEMS and slow positron beam

    Institute of Scientific and Technical Information of China (English)

    张桂林; WengHui-Min; 等

    1996-01-01

    Using conversion electron Moessbauer spectroscopy(CEMS) and slow positron beam,the chemical state of 57Fe(100keV,3×1016cm-2)implanted into ZrO2 containing 0.03 mole fraction Y2O3(ZY3)and its thermodynamic behavior during annealing process at 200-500℃ are studied.For as-implanted sampled,Fe chemical states of Fe0,Fe2+ and Fe3+ are observed,and assigned to the superparamagnetic metallic iron cluster,iron dimer(and trimer)and complex of the Fe3+ associated with cation vacancy(V) and oxygen,respectively.After annealing at 400℃ the complexes of Fe3+-V are mostly dissolved,and the prior phase to αFe and α-Fe nano-crystalline cluster are present in the sample .Meanwhile the mixed conducting of oxygen-ions and electrons in the ZY3 sample containing Fe appears,it maty correlate with the different iron charge states and their relative amounts,in particular with the α-Fe nano-granule.

  13. CEM Learning Method of Discriminative Bayesian Networks%判别贝叶斯网络的CEM学习算法

    Institute of Scientific and Technical Information of China (English)

    高妍方; 陈英武

    2010-01-01

    当数据存在缺值时,通常应用EM算法学习贝叶斯网络.然而,EM算法以联合似然作为目标函数,与判别预测问题的目标相偏离.与EM算法不同,CEM(Conditional Expectation Maximum)算法直接以条件似然作为目标函数.研究了判别贝叶斯网络学习的CEM算法,提出一种使得CEM算法具有单调性和收敛性的Q函数.为了简化计算,在CEM算法的E步,应用Q函数的一种简化形式;在CEM算法的M步,应用梯度下降法的一次搜索结果作为最优值的近似.最后,在UCI数据集上的实验结果表明了CEM算法在判别贝叶斯网络学习中的有效性.

  14. Method for the rapid determination of protein in meats using the CEM Sprint protein analyzer: collaborative study.

    Science.gov (United States)

    Moser, Cindy; Herman, Kathy

    2011-01-01

    A collaborative study was conducted to determine the protein content of raw and processed meat products by a protein-tagging and colorimetric technique. Meat products were prepared following AOAC Official Method 983.18 and analyzed using CEM Corporation's Sprint Rapid Protein Analyzer. Sprint provides protein results by combining an accurately weighed test portion with a known amount of dye-binding agent. The dye-binding agent binds with the lysine, histidine, and arginine, as well as the n-terminus of the proteins commonly found in raw meat and processed meat products. Results are displayed and reported by the Sprint as a percentage (g/100 g) of protein. Ten blind duplicate study samples were sent to 10 collaborating laboratories in the United States. The within-laboratory (repeatability) relative standard deviation (RSD(r)) ranged from 0.91 to 3.04%, and between-laboratories (reproducibility) relative standard deviation (RSDR) ranged from 1.50 to 3.41% for protein. The method is recommended for Official First Action.

  15. Energy-dependent reduced drug binding as a mechanism of Vinca alkaloid resistance in human leukemic lymphoblasts.

    Science.gov (United States)

    Beck, W T; Cirtain, M C; Lefko, J L

    1983-11-01

    We studied the accumulation of [3H]vinblastine (VLB) by lines of CCRF-CEM cultured human leukemic lymphoblasts that were either sensitive or resistant to the drug. Neither cell line metabolized VLB, nor selectively retained any radioactive impurities. There was an apparent "instantaneous" accumulation of VLB by cells of both lines, resulting in cell to medium ratios greater than 1.0 within 1 sec after drug addition. Experiments between 0 and 60 sec revealed that the presumed undirectional initial rate of VLB accumulation by resistant cells, termed CEM/VLB100, was about one-half that of sensitive CEM cells. In experiments carried out over 60 min, the VLB-resistant cells accumulated considerably less [3H]VLB than did the sensitive cells. Drug accumulation by both cell lines was temperature-sensitive, since incubation of cells at 4 degrees resulted in only minimal uptake beyond that observed at zero time. CEM/VLB100 cells retained less drug than did CEM cells, apparently because of a larger fraction of readily releasable VLB compared with CEM cells. The accumulation of VLB by either cell line was related in part to cellular levels of ATP. Although depletion of ATP was associated with decreased accumulation of VLB by CEM cells, it was related to enhanced drug accumulation by CEM/VLB100 cells. Restoration of ATP levels to near control values by addition of glucose also had opposite effects on the two cell lines, causing further accumulation of VLB by the sensitive line but leading to apparent drug efflux from the resistant line. Potentially competing substrates (VM-26, colchicine, daunorubicin, and doxorubicin) failed to block this glucose-mediated release of VLB from the CEM/VLB100 cells. In experiments with energy-depleted CEM/VLB100 cells preloaded with VLB and then incubated in drug-free medium, initial drug loss was shown to be independent of cellular metabolism, being roughly the same for both metabolically intact and metabolically depleted cells. Glucose (energy

  16. Study of the Cytotoxic Effects of the New Synthetic Isothiocyanate CM9 and Its Fullerene Derivative on Human T-Leukemia Cells

    Directory of Open Access Journals (Sweden)

    Elena De Gianni

    2015-02-01

    Full Text Available One important strategy to develop effective anticancer agents is based on natural products. Many active phytochemicals are in human clinical trials and have been used for a long time, alone and in association with conventional anticancer drugs, for the treatment of various types of cancers. A great number of in vitro, in vivo and clinical reports document the multi-target anticancer activities of isothiocyanates and of compounds characterized by a naphthalenetetracarboxylic diimide scaffold. In order to search for new anticancer agents with a better pharmaco-toxicological profile, we investigated hybrid compounds obtained by inserting isothiocyanate group(s on a naphthalenetetracarboxylic diimide scaffold. Moreover, since water-soluble fullerene derivatives can cross cell membranes thus favoring the delivery of anticancer therapeutics, we explored the cytostatic and cytotoxic activity of hybrid compounds conjugated with fullerene. We studied their cytostatic and cytotoxic effects on a human T-lymphoblastoid cell line by using different flow cytometric assays. In order to better understand their pharmaco-toxicological potential, we also analyzed their genotoxicity. Our global results show that the synthesized compounds reduced significantly the viability of leukemia cells. However, the conjugation with a non-toxic vector did not increase their anticancer potential. This opens an interesting research pattern for certain fullerene properties.

  17. Acridone derivative 8a induces oxidative stress-mediated apoptosis in CCRF-CEM leukemia cells: application of metabolomics in mechanistic studies of antitumor agents.

    Directory of Open Access Journals (Sweden)

    Yini Wang

    Full Text Available A new acridone derivative, 2-aminoacetamido-10-(3, 5-dimethoxy-benzyl-9(10H-acridone hydrochloride (named 8a synthesized in our lab shows potent antitumor activity, but the mechanism of action remains unclear. Herein, we report the use of an UPLC/Q-TOF MS metabolomic approach to study the effects of three compounds with structures optimized step-by-step, 9(10H-acridone (A, 10-(3,5-dimethoxybenzyl-9(10H-acridone (I, and 8a, on CCRF-CEM leukemia cells and to shed new light on the probable antitumor mechanism of 8a. Acquired data were processed by principal component analysis (PCA and orthogonal partial least squares discriminant analysis (OPLS-DA to identify potential biomarkers. Comparing 8a-treated CCRF-CEM leukemia cells with vehicle control (DMSO, 23 distinct metabolites involved in five metabolic pathways were identified. Metabolites from glutathione (GSH and glycerophospholipid metabolism were investigated in detail, and results showed that GSH level and the reduced/oxidized glutathione (GSH/GSSG ratio were significantly decreased in 8a-treated cells, while L-cysteinyl-glycine (L-Cys-Gly and glutamate were greatly increased. In glycerophospholipid metabolism, cell membrane components phosphatidylcholines (PCs were decreased in 8a-treated cells, while the oxidative products lysophosphatidylcholines (LPCs were significantly increased. We further found that in 8a-treated cells, the reactive oxygen species (ROS and lipid peroxidation product malondialdehyde (MDA were notably increased, accompanied with decrease of mitochondrial transmembrane potential, release of cytochrome C and activation of caspase-3. Taken together our results suggest that the acridone derivative 8a induces oxidative stress-mediated apoptosis in CCRF-CEM leukemia cells. The UPLC/Q-TOF MS based metabolomic approach provides novel insights into the mechanistic studies of antitumor drugs from a point distinct from traditional biological investigations.

  18. Produção de massa fresca dos inhames 'Cem/Um' e 'Macaquinho', em três densidades de plantas

    Directory of Open Access Journals (Sweden)

    Zárate Néstor A. Heredia

    2003-01-01

    Full Text Available O trabalho foi conduzido na área experimental da UFMS, em Dourados (MS, de 24 de setembro de 1999 a 21 de maio de 2000, em Latossolo Vermelho distroférrico de textura argilosa. Avaliaram-se as produções de massa fresca dos inhames 'Cem/Um' e 'Macaquinho', cultivados sob três populações (100.000; 125.000 e 150.000 plantas.ha-1. O delineamento experimental foi de blocos casualizados, com quatro repetições e os tratamentos distribuídos num esquema fatorial 2 x 3. Foram efetuadas colheitas aos 217 e 240 dias após o plantio (DAP. Avaliou-se as massas frescas de limbos, pecíolos, rizomas-mães (RM e de rizomas-filhos (RF. As produções de pecíolos na colheita aos 217 DAP tiveram aumento significativo de 2,2 t.ha-1 para o clone Macaquinho, em relação ao 'Cem/Um'; de 2,0 t.ha-1 na população de 125.000 plantas.ha-1, em relação a 100.000 plantas.ha-1. Na colheita aos 240 DAP houve efeito da interação. As produções de massa fresca de RM das plantas nas populações de 125.000 e 150.000 plantas.ha-1, colhendo-se aos 217 DAP, foram significativamente maiores em 3,0 e 1,9 t.ha-1, respectivamente, em relação à população de 100.000 plantas.ha-1. As produções de massa fresca dos RF aos 217 DAP mostraram que o 'Cem/Um' foi significativamente maior em 6,4 t.ha-1 que o 'Macaquinho'. Na colheita aos 240 DAP, as maiores produções do inhame 'Cem/Um', tanto de RM (11,4 t.ha-1 como de RF (56,7 t.ha-1, foram na população de 125.000 plantas.ha-1 e do 'Macaquinho' com 150.000 plantas.ha-1 (10,2 t.ha-1 de RM e 58,00 t.ha-1 de RF.

  19. Application of 1000 MW unit denitrification CEMS system%1000MW机组脱硝CEMS系统应用实践

    Institute of Scientific and Technical Information of China (English)

    张兰华; 闫超

    2015-01-01

    脱硝烟气连续监测系统 ( CEMS ) , 由于在国内运行维护经验不足, 加上在系统设计、 设备安装时负规范, 测量环境恶劣等因素影响, 导致脱硝CEMS运行维护难度大. 为此平海电厂经过几年的运行维护摸索后, 对CEMS系统进行合理优化和改造, 取得了良好的效果.

  20. Accurate detection of carcinoma cells by use of a cell microarray chip.

    Directory of Open Access Journals (Sweden)

    Shohei Yamamura

    Full Text Available BACKGROUND: Accurate detection and analysis of circulating tumor cells plays an important role in the diagnosis and treatment of metastatic cancer treatment. METHODS AND FINDINGS: A cell microarray chip was used to detect spiked carcinoma cells among leukocytes. The chip, with 20,944 microchambers (105 µm width and 50 µm depth, was made from polystyrene; and the formation of monolayers of leukocytes in the microchambers was observed. Cultured human T lymphoblastoid leukemia (CCRF-CEM cells were used to examine the potential of the cell microarray chip for the detection of spiked carcinoma cells. A T lymphoblastoid leukemia suspension was dispersed on the chip surface, followed by 15 min standing to allow the leukocytes to settle down into the microchambers. Approximately 29 leukocytes were found in each microchamber when about 600,000 leukocytes in total were dispersed onto a cell microarray chip. Similarly, when leukocytes isolated from human whole blood were used, approximately 89 leukocytes entered each microchamber when about 1,800,000 leukocytes in total were placed onto the cell microarray chip. After washing the chip surface, PE-labeled anti-cytokeratin monoclonal antibody and APC-labeled anti-CD326 (EpCAM monoclonal antibody solution were dispersed onto the chip surface and allowed to react for 15 min; and then a microarray scanner was employed to detect any fluorescence-positive cells within 20 min. In the experiments using spiked carcinoma cells (NCI-H1650, 0.01 to 0.0001%, accurate detection of carcinoma cells was achieved with PE-labeled anti-cytokeratin monoclonal antibody. Furthermore, verification of carcinoma cells in the microchambers was performed by double staining with the above monoclonal antibodies. CONCLUSION: The potential application of the cell microarray chip for the detection of CTCs was shown, thus demonstrating accurate detection by double staining for cytokeratin and EpCAM at the single carcinoma cell level.

  1. Cytotoxicity of Various Endodontic Materials on Stem Cells of Human Apical Papilla

    Science.gov (United States)

    Saberi, Eshagh Ali; Karkehabadi, Hamed; Mollashahi, Narges Farhad

    2016-01-01

    Introduction: This in vitro study assessed and compared the cytotoxicity of mineral trioxide aggregate (MTA), calcium-enriched mixture (CEM) cement, Biodentine (BD) and octacalcium phosphate (OCP) on stem cells of the human apical papilla (SCAP). Methods and Materials: SCAPs were isolated from two semi-impacted third molars. The cells were cultured in wells of an insert 24-well plate and were then incubated. The plates were then removed from the incubator and randomly divided into four experimental groups that were exposed to 1-mm discs of set MTA, CEM, BD or OCP, and one untreated control group. After 24, 48 and 168 h, the plates were removed from the incubator and 3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyl tetrazolium bromide (MTT) solution was added to each well. Data were analyzed at different time points using the repeated measures ANOVA followed by Bonferroni test and the level of significance was set at 0.05. Results: Cytotoxicity of the four materials was not significantly different from that of the control group at 24, 48 and 168 h (P>0.05). Two-by-two comparison revealed that cytotoxicity of MTA and CEM cement was significantly different from each other at 168 h (P<0.05) although the cytotoxicity of CEM was less than MTA. Cytotoxicity of OCP and MTA was also significantly different from each other at 48 h and OCP had more favorable biocompatibility than MTA (P<0.05). Conclusion: CEM, OCP, BD and MTA showed acceptable biocompatibility when exposed to SCAP. Over time, CEM showed the least cytotoxicity among the materials under study. PMID:26843872

  2. The Key-point Analysis of Comparison Testing, Quality Control and Data Verification of CEMS%烟气CEMS比对监测及质量控制、数据审核要点解析

    Institute of Scientific and Technical Information of China (English)

    郭卫兴; 胡敏; 刘启贞

    2009-01-01

    On the basis of the problems during the operation of CEMS of stationary source, the comparison tes-ting, quality control and data verification of CEMS are analyzed. The data of CEMS, validated by these three methods, can be used by the ministry of environmental protection.%针对目前烟气CEMS在实际运行过程中遇到的问题,本文从比对监测、质量控制以及数据审核三个方面作了详细分析,通过验收比对监测、日常的监督比对监测、有效数据的审核、烟气CEMS的质量保证和质量控制措施,烟气CEMS产生的数据可作为各地环保管理部门环境监督管理的依据.

  3. Influence of olive oil press cakes on Shiitake culinary-medicinal mushroom, lentinus edodes (Berk.) singer (higher basidiomycetes) fruiting bodies production and effect of their crude polysaccharides on CCRF-CEM cell proliferation.

    Science.gov (United States)

    Gregori, Andrej; Kretschmer, Nadine; Wagner, Susanne; Boechzelt, Herbert; Klinar, Dusan; Bauer, Rudolf; Pohleven, Franc

    2012-01-01

    Lentinus edodes (Berk.) Singer fruiting bodies were cultivated on substrates composed of beech sawdust, wheat bran, and calcium sulfate hemihydrate (gypsum), containing different proportions of olive oil press cakes (OOPC). We determined the influence of OOPC on fruiting bodies production and proliferation of CCRF-CEM leukemia cells. A negative influence of OOPC on mycelia growth and maturation was noticed. When growth medium contained 80% OOPC, fruiting bodies ceased forming. To investigate the cytotoxicity on CCRF-CEM cells in vitro, cells were treated with crude polysaccharides extracted from L. edodes fruiting bodies. Also in this case a negative correlation between OOPC content and cytotoxicity was found.

  4. Reversal of Vinca alkaloid resistance but not multiple drug resistance in human leukemic cells by verapamil.

    Science.gov (United States)

    Beck, W T; Cirtain, M C; Look, A T; Ashmun, R A

    1986-02-01

    We examined the ability of verapamil, a Ca2+ channel blocker, to overcome Vinca alkaloid and multiple drug resistance in our CEM/VLB100 and CEM/DOX human leukemic lymphoblasts. Compared with the parent CCRF-CEM cells, CEM/VLB100 cells are approximately equal to 200- to 800-fold resistant to vinblastine and express cross-resistance to vincristine, doxorubicin, and other "natural product" drugs, as determined by comparing 50% inhibitory concentrations in a 48-h growth inhibition assay. Verapamil (10 microM) decreased the 50% inhibitory concentrations for Vinca alkaloids in CEM/VLB100 cells by approximately equal to 75- to 85-fold but caused only slight (approximately equal to 2- to 5-fold) decreases in 50% inhibitory concentrations for anthracyclines, epipodophyllotoxins, and other tubulin-binding drugs (colchicine and podophyllotoxin). Qualitatively similar results were obtained with doxorubicin-resistant cells, termed CEM/DOX; verapamil caused a 19-fold increase in doxorubicin toxicity but 67- and 3500-fold increases in the toxicities of vinblastine and vincristine, respectively. These results indicate that the effect of verapamil is relatively greater for Vinca alkaloids, with less pronounced effects for the other natural product drugs against which these cells express multiple drug resistance. In flow cytometric studies, individually nontoxic or minimally toxic concentrations of vinblastine plus verapamil caused measurable accumulation in the G2 + M phase as early as 4 h after the drug combination was added to cultures of CEM/VLB100 cells; this finding correlated with a comparable increase in the number of cells in mitosis and measurable decreases in the total number of cells. Since similar effects on cell cycle distribution, percentage of cells in mitosis, and cell number were seen when CEM/VLB100 cells were treated with toxic concentrations of vinblastine alone, we conclude that the primary toxicity of the vinblastine-verapamil combination stems from the

  5. Efficacy of Solithromycin (CEM-101) for Experimental Otitis Media Caused by Nontypeable Haemophilus influenzae and Streptococcus pneumoniae.

    Science.gov (United States)

    Figueira, M; Fernandes, P; Pelton, S I

    2016-09-01

    Solithromycin (CEM-101) is a "fourth-generation" macrolide, as it has three binding site and is acid stable. The three binding sites confer activity against bacteria resistant to the older macrolides and ketolides, including multidrug-resistant Streptococcus pneumoniae and nontypeable Haemophilus influenzae (NTHi). The objective of this study was to evaluate solithromycin pharmacokinetics (PK), middle ear fluid (MEF) concentrations, and microbiologic efficacy in a chinchilla model of experimental otitis media (EOM) due to strains of S. pneumoniae or NTHi. Plasma PK (maximum concentration of drug in serum [Cmax] and area under the concentration-time curve from 0 to 24 h [AUC0-24]) and middle ear fluid (MEF) concentrations were determined. Isolates with specified antimicrobial susceptibility patterns were inoculated directly into the middle ear (ME). Plasma and MEF were collected for PK and MEF cultures performed to determine efficacy. Solithromycin administered at 150 mg/kg of body weight/day resulted in Cmax and AUC0-24 values of 2.2 μg/ml and 27.4 μg · h/ml in plasma and 1.7 μg/ml and 28.2 μg · h/ml in extracellular MEF on day 1. By day 3, Cmax and AUC0-24 values had increased to 4.5 μg/ml and 54 μg · h/ml in plasma and 4.8 μg/ml and 98.6 μg · h/ml in extracellular MEF. For NTHi EOM, three isolates with MIC/minimal bactericidal concentration (MBC) ratios of 0.5/1 μg/ml (isolate BCH1), 2/2 μg/ml (isolate BMC1247C), and 4/4 μg/ml (isolate BMC1213C) were selected. The MEF of >85% of animals infected with BCH1 and BMC1247C was sterilized. For NTHi BMC1213, >85% of MEF cultures remained positive. For S. pneumoniae EOM, 3 isolates with MIC/MBC ratios of 0.06/0.125 μg/ml (S. pneumoniae 331), 0.125/1 μg/ml (S. pneumoniae CP-645 [MLSB phenotype]), and 0.5/2 μg/ml (CP-712 [mefA subclass mefA resistance]) were selected. Solithromycin sterilized MEF in 100% of animals infected with S. pneumoniae 331 and S. pneumoniae CP-645. ME infection persisted in 60% of

  6. Endogenous origins of HIV-1 G-to-A hypermutation and restriction in the nonpermissive T cell line CEM2n.

    Directory of Open Access Journals (Sweden)

    Eric W Refsland

    Full Text Available The DNA deaminase APOBEC3G converts cytosines to uracils in retroviral cDNA, which are immortalized as genomic strand G-to-A hypermutations by reverse transcription. A single round of APOBEC3G-dependent mutagenesis can be catastrophic, but evidence suggests that sublethal levels contribute to viral genetic diversity and the associated problems of drug resistance and immune escape. APOBEC3G exhibits an intrinsic preference for the second cytosine in a 5'CC dinucleotide motif leading to 5'GG-to-AG mutations. However, an additional hypermutation signature is commonly observed in proviral sequences from HIV-1 infected patients, 5'GA-to-AA, and it has been attributed controversially to one or more of the six other APOBEC3 deaminases. An unambiguous resolution of this problem has been difficult to achieve, in part due to dominant effects of protein over-expression. Here, we employ gene targeting to dissect the endogenous APOBEC3 contribution to Vif-deficient HIV-1 restriction and hypermutation in a nonpermissive T cell line CEM2n. We report that APOBEC3G-null cells, as predicted from previous studies, lose the capacity to inflict 5'GG-to-AG mutations. In contrast, APOBEC3F-null cells produced viruses with near-normal mutational patterns. Systematic knockdown of other APOBEC3 genes in an APOBEC3F-null background revealed a significant contribution from APOBEC3D in promoting 5'GA-to-AA hypermutations. Furthermore, Vif-deficient HIV-1 restriction was strong in parental CEM2n and APOBEC3D-knockdown cells, partially alleviated in APOBEC3G- or APOBEC3F-null cells, further alleviated in APOBEC3F-null/APOBEC3D-knockdown cells, and alleviated to the greatest extent in APOBEC3F-null/APOBEC3G-knockdown cells revealing clear redundancy in the HIV-1 restriction mechanism. We conclude that endogenous levels of APOBEC3D, APOBEC3F, and APOBEC3G combine to restrict Vif-deficient HIV-1 and cause the hallmark dinucleotide hypermutation patterns in CEM2n. Primary T

  7. Synthesis of tetrahydrohonokiol derivates and their evaluation for cytotoxic activity against CCRF-CEM leukemia, U251 glioblastoma and HCT-116 colon cancer cells.

    Science.gov (United States)

    Bernaskova, Marketa; Kretschmer, Nadine; Schuehly, Wolfgang; Huefner, Antje; Weis, Robert; Bauer, Rudolf

    2014-01-20

    Biphenyl neolignans such as honokiol and magnolol, which are the major active constituents of the Asian medicinal plant Magnolia officinalis, are known to exert a multitude of pharmacological and biological activities. Among these, cytotoxic and tumor growth inhibitory activity against various tumour cell lines are well-documented. To further elucidate the cytotoxic effects of honokiol derivatives, derivatizations were performed using tetrahydrohonokiol as a scaffold. The derivatizations comprised the introduction of functional groups, e.g., nitro and amino groups, as well as alkylation. This way, 18 derivatives, of which 13 were previously undescribed compounds, were evaluated against CCRF-CEM leukemia cells, U251 glioblastoma and HCT-116 colon cancer cells. The results revealed no significant cytotoxic effects in any of the three tested cell lines at a test concentration of 10 µM.

  8. Synthesis of Tetrahydrohonokiol Derivates and Their Evaluation for Cytotoxic Activity against CCRF-CEM Leukemia, U251 Glioblastoma and HCT-116 Colon Cancer Cells

    Directory of Open Access Journals (Sweden)

    Marketa Bernaskova

    2014-01-01

    Full Text Available Biphenyl neolignans such as honokiol and magnolol, which are the major active constituents of the Asian medicinal plant Magnolia officinalis, are known to exert a multitude of pharmacological and biological activities. Among these, cytotoxic and tumor growth inhibitory activity against various tumour cell lines are well-documented. To further elucidate the cytotoxic effects of honokiol derivatives, derivatizations were performed using tetrahydrohonokiol as a scaffold. The derivatizations comprised the introduction of functional groups, e.g., nitro and amino groups, as well as alkylation. This way, 18 derivatives, of which 13 were previously undescribed compounds, were evaluated against CCRF-CEM leukemia cells, U251 glioblastoma and HCT-116 colon cancer cells. The results revealed no significant cytotoxic effects in any of the three tested cell lines at a test concentration of 10 µM.

  9. 脱硝CEMS系统在火电厂的应用%Application of Denitration CEMS System in Coal-fired Power Plant

    Institute of Scientific and Technical Information of China (English)

    郜培刚

    2015-01-01

    当前在我国火电厂脱硝CEMS系统应用的厂家有ABB、西门子、聚光科技、西克麦哈克等,脱硝CEMS仪表作为判定脱硝效率的依据,其重要性不言而喻.本文主要以山西临汾热电所使用聚光科技CEMS-2000系统为例进行陈述,从应用实例、故障处理为主,对脱硝CEMS系统的安装注意事项、常见故障处理及日常维护等方面存在的问题进行了分析,并给出解决办法.

  10. CEM03.03 and LAQGSM03.03 Event Generators for the MCNP6, MCNPX, and MARS15 Transport Codes

    CERN Document Server

    Mashnik, S G; Prael, R E; Sierk, A J; Baznat, M I; Mokhov, N V

    2008-01-01

    A description of the IntraNuclear Cascade (INC), preequilibrium, evaporation, fission, coalescence, and Fermi breakup models used by the latest versions of our CEM03.03 and LAQGSM03.03 event generators is presented, with a focus on our most recent developments of these models. The recently developed "S" and "G" versions of our codes, that consider multifragmentation of nuclei formed after the preequilibrium stage of reactions when their excitation energy is above 2A MeV using the Statistical Multifragmentation Model (SMM) code by Botvina et al. ("S" stands for SMM) and the fission-like binary-decay model GEMINI by Charity ("G" stands for GEMINI), respectively, are briefly described as well. Examples of benchmarking our models against a large variety of experimental data on particle-particle, particle-nucleus, and nucleus-nucleus reactions are presented. Open questions on reaction mechanisms and future necessary work are outlined.

  11. Effect of Different Thickness of PermaCem-Dual on the Crown Retention%不同厚度普玛黏结剂对冠固位力的影响

    Institute of Scientific and Technical Information of China (English)

    高倩; 李彦秋; 王德波

    2011-01-01

    Objective: To test different thicknesses of PermaCem-Dual on the effect of crown retention. Methods: Fifty extracted human maxillary premolars from orthodontics were selected. After tooth preparation, 30 dies were made and randomly divided into 3 groups (A, B and C groups) according to different coating layers of dispacer. The metal crowns were produced. The samples were made of the crowns and teeth honded by PermaCem-Dual, and then storage in artificial saliva for 1month. All the metal crowns were subjected to 10 000 cyclic mechanical loading , and then they were sent to measure the force at which retention failed. All-ceramic crowns were produced by CAD/CAM system according to adhesive thickness 50 μm and 75 μm. The samples were made of the crowns and teeth were bonded by chemosetting and light-cure. All the all-ceramic samples were measured the force at which retention failed after storage in artificial saliva for 1 month. Results; The retention force was significantly higher in group A and group B than that of group C (P < 0.01), but there was no significant difference between group A and group B (P < 0.05). In the all-ceramic crowns groups, the retention force was higher in group of 50 μm than that of group 75 μm (P < 0.05). As the same adhesive thickness, it showed no difference in the retention force between light-curing and chemosetting group (P > 0.05). Conclusion: The retention force of the crown was decreased as the increase of adhesive thickness in a certain range of adhesive thickness.%目的:探讨不同厚度普玛黏结剂对冠固位力的影响.方法:收集50颗正畸拔除的上颌前磨牙,选取其中30颗牙体按照在代型上涂布间隙剂层数的不同分为A、B、C 3组制作金属冠,用普玛黏结剂黏结制成试件,于人工唾液浸泡1个月,循环加载10 000次后进行冠固位力的测试.20颗牙体利用CAD/CAM系统制作全瓷冠,依黏结剂厚度分为50μm组和75μm组,分别采用自固化和光固化2

  12. The Civitavecchia Coastal Environment Monitoring System (C-CEMS: a new tool to analyse the conflicts between coastal pressures and sensitivity areas

    Directory of Open Access Journals (Sweden)

    S. Bonamano

    2015-07-01

    Full Text Available The understanding of the coastal environment is fundamental for efficiently and effectively facing the pollution phenomena, as expected by Marine Strategy Directive, which is focused on the achievement of Good Environmental Status (GES by all Member States by 2020. To address this, the Laboratory of Experimental Oceanology and Marine Ecology developed a multi-platform observing network that has been in operation since 2005 in the coastal marine area of Civitavecchia, where multiple uses and high ecological values closely coexist. The Civitavecchia Coastal Environment Monitoring System (C-CEMS, implemented in the current configuration, includes various modules that provide integrated information to be used in different fields of the environmental research. The long term observations acquired by the fixed stations are integrated by in situ surveys, periodically carried out for the monitoring of the physical, chemical and biological characteristics of the water column and marine sediments, as well as of the benthic biota. The in situ data, integrated with satellite observations (e.g., temperature, chlorophyll a and TSM, are used to feed and validate the numerical models, which allow analyses and forecasting of the dynamics of conservative and non-conservative particles under different conditions. As examples of C-CEMS applications, two case studies are reported in this work: (1 the analysis of faecal bacteria dispersion for bathing water quality assessment and, (2 the evaluation of the effects of the dredged activities on Posidonia meadows, which make up most of the two sites of community importance located along the Civitavecchia coastal zone. The simulations results are combined with Posidonia oceanica distribution and bathing areas presence in order to resolve the conflicts between coastal uses (in terms of stress produced by anthropic activities and sensitivity areas management.

  13. The Civitavecchia Coastal Environment Monitoring System (C-CEMS): a new tool to analyze the conflicts between coastal pressures and sensitivity areas

    Science.gov (United States)

    Bonamano, S.; Piermattei, V.; Madonia, A.; Paladini de Mendoza, F.; Pierattini, A.; Martellucci, R.; Stefanì, C.; Zappalà, G.; Caruso, G.; Marcelli, M.

    2016-01-01

    The understanding of the coastal environment is fundamental for efficiently and effectively facing the pollution phenomena as expected by the Marine Strategy Framework Directive, and for limiting the conflicts between anthropic activities and sensitivity areas, as stated by Maritime Spatial Planning Directive. To address this, the Laboratory of Experimental Oceanology and Marine Ecology developed a multi-platform observing network that has been in operation since 2005 in the coastal marine area of Civitavecchia (Latium, Italy) where multiple uses and high ecological values closely coexist. The Civitavecchia Coastal Environment Monitoring System (C-CEMS), implemented in the current configuration, includes various components allowing one to analyze the coastal conflicts by an ecosystem-based approach. The long-term observations acquired by the fixed stations are integrated with in situ data collected for the analysis of the physical, chemical and biological parameters of the water column, sea bottom and pollution sources detected along the coast. The in situ data, integrated with satellite observations (e.g., temperature, chlorophyll a and TSM), are used to feed and validate the numerical models, which allow the analysis and forecasting of the dynamics of pollutant dispersion under different conditions. To test the potential capabilities of C-CEMS, two case studies are reported here: (1) the analysis of fecal bacteria dispersion for bathing water quality assessment, and (2) the evaluation of the effects of the dredged activities on Posidonia meadows, which make up most of the two sites of community importance located along the Civitavecchia coastal zone. The simulation outputs are overlapped by the thematic maps showing bathing areas and Posidonia oceanica distribution, thus giving a first practical tool that could improve the resolution of the conflicts between coastal uses (in terms of stress produced by anthropic activities) and sensitivity areas.

  14. The more basic isoform of eEF1A relates to tumour cell phenotype and is modulated by hyper-proliferative/differentiating stimuli in normal lymphocytes and CCRF-CEM T-lymphoblasts.

    Science.gov (United States)

    Scaggiante, Bruna; Dapas, Barbara; Pozzato, Gabriele; Grassi, Gabriele

    2013-06-01

    The elongation factor 1A proteins (eEF1A1/A2) are known to play a role in tumours. We previously found that a more basic isoform of eEF1A (MBI-eEF1A) is present in the cytoskeletal/nuclear-enriched extracts of CCRF-CEM T-lymphoblasts but not in those of normal lymphocytes. To obtain deeper knowledge about MBI-eEF1A biology, we investigate from which of the eEF1A proteins, eEF1A1 or eEF1A2, MBI-eEF1A originates and the possibility that its appearance can be modulated by the differentiated or proliferative cell status. CCRF-CEM T-lymphoblasts and normal lymphocytes were cultured with or without differentiation/pro-proliferative stimuli (Phorbol 12-Myristate 13-Acetate (PMA) alone or the combination of phytohaemagglutinin (PHA) with PMA, respectively), and the presence of MBI-eEF1A evaluated together with that of the eEF1A1/A2 mRNAs. Our data indicate that the MBI-eEF1A may derive from eEF1A1 as eEF1A2 is not expressed in CCRF-CEM and normal lymphocytes. Moreover, MBI-eEF1A is inducible in normal lymphocytes upon hyper-proliferative stimuli application; in CCRF-CEM, its presence can be abrogated by PMA-induced differentiation. Finally, MBI-eEF1A may have a functional role in hyper-proliferating/tumour cells as its disappearance reduces the growth of CCRF-CEM and that of PHA/PMA-stimulated lymphocytes. The presented data suggest that MBI-eEF1A may be related to oncogenic cell phenotype, rising the possibility to use MBI-eEF1A as target for novel therapeutic strategies.

  15. 火电厂烟气排放连续监测系统(CEMS)与参比方法监测数据差异分析%The Differential Analysis of the Smoke-Letting Monitoring Data Between the Reference Ways and the Continuous Emissions Monitoring Systems(CEMS) in Power Plant

    Institute of Scientific and Technical Information of China (English)

    张布伟; 张晓勇; 蔡同锋

    2009-01-01

    火电厂烟气排放连续监测系统(continuous emissions monitoring systems)以下简称CEMS)是为环境执法机构提供数据,对企业的排污状况进行跟踪和管理的一个重要手段,环保技术部门参比方法(国家或行业发布的标准方法)是作为检验CEMS准确度的重要方法.2008年江苏省装机容量300MW以上火电厂CEMS比对监测的过程中,部分电厂CEMS与参比监测方法数据存在一定的差异,本文对此进行分析并找出原因,用参比的手工监测方法进行校验、指导CEMS,以此提高CEMS监测数据的代表性、准确性和可比性,让CEMS更好的服务于环境管理.

  16. Analysis of the Escherichia coli dynamics in Civitavecchia bathing areas using the multi-platform coastal observing system C-CEMS (Civitavecchia-Coastal Environment Monitoring System)

    Science.gov (United States)

    Bonamano, Simone; Madonia, Alice; Borsellino, Chiara; Piermattei, Viviana; Martellucci, Riccardo; Pierattini, Alberto; Albani, Marta; Stefanì, Chiara; Caruso, Gabriella; Zappalà, Giuseppe; Marcelli, Marco

    2015-04-01

    Coastal areas are strongly affected by episodes of fecal contamination due to polluted water inflows from inadequately treated sewages that can cause a loss of resilience of the coastal ecosystems and also an alteration of their functioning. With the aim to provide an useful tool to assess the effects of such phenomena a big effort has been undertaken to the realization of a multi-platform monitoring observing system C-CEMS (Civitavecchia-Coastal Environment Monitoring System) in the coastal zone of Civitavecchia (Northern Latium, Italy), which collect a large amount of data by fixed stations, periodic in-situ samplings and remote observations and use them to feed the mathematical models in order to forecast the paths of the polluted substances in the marine environment. This work is focused on the analysis of the dispersion of Escherichia coli in Civitavecchia bathing areas during the summer 2012. Four daily field surveys under different meteomarine conditions were performed to detect the E. coli concentration at the discharge points and the control stations located in the bathing areas. The collected samples were analysed through the Culture-Based technique (CB) and the Fluorescent Antibody (FA) method in order to estimate both the viable culturable cells and the total E.coli population. The comparison between bacterial concentrations obtained by the two methods shows that the quantitative discrepancy between the culture and microscopical counts increases as the distance to the discharge point grows, underlining the occurrence of a high percentage of non viable cells, which are detected by FA only, at the control stations. Microbiological datasets integrated with C-CEMS measures were used to feed and validate the hydrodynamical (Delft3d-Flow and Swan) and bacterial dispersion (Delft3d-Waq) models. In order to analyze the contribute of physical (transport induced by marine currents) and biological processes (cells decay connected to solar radiation, temperature

  17. Motivation of Teachers. ACSA School Management Digest, Series 1, Number 18. ERIC/CEM Research Analysis Series, Number 46.

    Science.gov (United States)

    Thompson, Sydney

    This publication discusses intrinsic teacher motivation by reviewing human resources literature and making use of educational literature and interviews with working educators. First it provides sketches of the work motivation theories of McGregor, Maslow, Herzberg, and Deci. Next, the paper examines the work and problems of teachers. Finally, it…

  18. On the physico-chemical evolution of low-pH and CEM I cement pastes interacting with Callovo-Oxfordian pore water under its in situ CO{sub 2} partial pressure

    Energy Technology Data Exchange (ETDEWEB)

    Dauzères, A., E-mail: alexandre.dauzeres@irsn.fr [CEA, DEN, DPC, SCCME, Laboratoire d' Etude du Comportement des Bétons et des Argiles, F-91191 Gif-sur-Yvette (France); Université de Poitiers, Laboratoire HYDRASA, UMR CNRS, 6269 Poitiers (France); IRSN, BP 17, 92262 Fontenay aux Roses (France); Le Bescop, P. [CEA, DEN, DPC, SCCME, Laboratoire d' Etude du Comportement des Bétons et des Argiles, F-91191 Gif-sur-Yvette (France); Cau-Dit-Coumes, C. [CEA, DEN, DTCD, SPDE, Laboratoire d' Etude de l' Enrobage des Déchets, F-30207 Bagnols-sur-Cèze (France); Brunet, F. [CEA, IRAMIS, SIS2M, Laboratoire de Structure et Dynamique par Résonnance Magnétique, F-91191 Gif-sur-Yvette (France); Bourbon, X. [Andra Scientific Division, 1-7 Rue Jean Monnet, Parc de la Croix Blanche, 92298 Chatenay Malabry Cedex (France); Timonen, J.; Voutilainen, M. [Department of Physics, University of Jyväskylä, P.O. Box 35, FIN-40351 Jyväskylä (Finland); Chomat, L. [CEA, DEN, DPC, SCCME, Laboratoire d' Etude du Comportement des Bétons et des Argiles, F-91191 Gif-sur-Yvette (France); Sardini, P. [Université de Poitiers, Laboratoire HYDRASA, UMR CNRS, 6269 Poitiers (France)

    2014-04-01

    Within the framework of geological repositories for radioactive waste, structural concretes must be adapted to the underground chemical conditions. CEM I cement-based materials are characterised by high pH that may produce an alkaline plume in the near-field of the repository. In order to avoid this problem, low-pH cements have been designed. This study compares the physico-chemical behaviour of a low-pH material with a CEM I cement paste, both being subjected to leaching by an aqueous solution. An original experimental setup was designed to reproduce the underground conditions using a specific CO{sub 2} regulation device. Under these conditions, the low-pH material was strongly degraded, which results in coarser porosity, whereas thickness degradation of the CEM I cement paste is limited by the precipitation of a magnesium-calcite crust over the surface, which reduces the exchange of soluble species. This paper also presents a new approach for microstructure characterisation based on high-resolution X-ray microtomography.

  19. Development of a highly efficient conversion electron Moessbauer spectroscopy (CEMS) detector for low temperature (<20 K) measurements and tests on Fe / (Eu{sub x}Pb{sub 1-x})Te bilayers; Desenvolvimento de um detector de alta eficiencia para espectroscopia Moessbauer de eletrons de conversao (CEMS) a baixas temperaturas (<20K) e testes em bicamadas Fe / (Eu{sub x}Pb{sub 1-x})Te

    Energy Technology Data Exchange (ETDEWEB)

    Pombo, Carlos Jose da Silva Matos

    2006-07-01

    The {sup 57}Fe Moessbauer spectroscopy is a nuclear, non-destructive technique used for the investigation of structural, magnetic and hyperfine properties of several materials. It is a powerful tool in characterizing materials in physics, metallurgy, geology and biology field areas, especially magnetic materials, alloys and minerals containing Fe. Lately, the Conversion Electron Moessbauer Spectroscopy (CEMS) is widely used in making studies on ultra-thin magnetic films, as well as other nanostructured materials. In case of magnetic nanostructures, low temperature (LT) studies are especially important due to the possibility of dealing with superparamagnetic effects. In this work it was developed a CEMS measurement system for low temperatures (<20 K) based on a solid-state electron multiplier (Channeltron{sup R}) and an optical cryostat (Model SVT-400, Janis Research Co, USA), from which the project was originally conceived at the Applied Physics / Moessbauer spectroscopy Department from University of Duisburg-Essen, Germany. The LT-CEMS system was fully built, tested and successfully applied in a preliminary characterization of Fe/(Eu{sub x}Pb{sub 1-x})Te(111) bilayers with use of a 15 angstrom, {sup 57} Fe probe layer, with reasonable results at sample temperatures as low as 8 K. (author)

  20. Research and application of GASS preconditioning system for "ltra low emission" CEMS in coal fired power plant%Nafion干燥器GASS处理系统在“超低排放”CEMS中的工程应用研究

    Institute of Scientific and Technical Information of China (English)

    蒋雄杰; 李峰

    2015-01-01

    Nafion dryer tubing has unique characteristics of selective gaseous dehumidification ,can re‐tain the target acid gas ,is a premium approach to widen existing cold and dry extractive CEMS .With Na‐fion tube as the core ,the GASS precondition system integrates secondary acid mist filter ,Nafion dry tub‐ing and online dew point analyzer together ,can thoroughly solve the problems of water condensation and low range SO2 loss of cold dry extract method CEMS .After laboratory experiments ,onsite portable CEMS experiments ,and application of Jiaxing Power Plant No .8 power generation "ultra low emission"CEMS ,GASS precondition system has been demonstrated that it's very suitable for cold and dry extractive"ultra low emission"CEMS in coal fired power plant .%燃煤电厂在推广“超低排放”CEMS气态污染物监测系统监测低量程SO2和NOx 中,低温、高湿度的烟气条件是极为严峻的挑战。Nafion干燥管独特的气态膜除湿、能保留目标气体的特点,为冷干直抽法CEMS提出了一个样气处理的新方案。Nafion管为核心的GASS样气处理系统,集絮凝过滤、除酸雾、Nafion管干燥和在线酸性气体露点监测为一体,可彻底解决冷干直抽法CEMS中冷凝水析出和低量程SO2易溶于冷凝水的难题,是一种创新的冷干直取法CEMS样气处理技术。通过实验室试验,手持式CEMS应用实验,和嘉兴发电厂8号机组"超低排放"CEMS的应用,证明GASS样气处理系统非常适合在燃煤电厂“超低排放”CEMS中应用。

  1. 自酸蚀树脂水门汀ResiCem牙本质粘结强度的评价%Micro-tensile bond strength of self-etching resin cement ResiCem to dentin

    Institute of Scientific and Technical Information of China (English)

    宣桂红; 傅柏平

    2011-01-01

    目的 评价自酸蚀树脂水门汀ResiCem的牙本质粘结强度并探讨酸蚀对其粘结强度的影响.方法 选择离体无龋第三恒磨牙15颗.沿垂直于牙体长轴方向将磨牙冠中1/3处切开,将牙本质面分别用自酸蚀树脂水门汀Panavia F和ResiCem原位对位粘结.其中ResiCem组牙本质面分别用磷酸酸蚀0、5、10、15 s.用低速切片机把样本切割成约1 mm×1 mm×8 mm条块后进行微拉伸测试,并通过扫描电镜观察粘结界面.结果 ResiCem的牙本质微拉伸粘结强度[(16.9±5.3)Mpa]与Panavia F[(17.0±5.2)Mpa]间差异无统计学意义(P>0.05).磷酸酸蚀显著地降低ResiCem与牙本质间的粘结强度(P<0.05),并随着酸蚀时间的延长而降低.结论 ResiCem的牙本质微拉伸粘结强度与Panavia F相当,但酸蚀会降低ResiCem的牙本质粘结强度.%Objectives The aim of this sludy was to invesligale the micro-tensile bond slrenglh(TBS) of self-elching resin cemenl ResiCem lo denlin with or wilhoul acid elching. Methods Fifteen non-carious adulls' third molars were used in the sludy. The crowns were cut into two perpendicularly lo tooth long axis at the middle one ihird of crowns in order lo expose the denlin surfaces of both sec tioned sides. Before cemenlalion,denlin surfaces in the Resin Cem group were acid elched for 0 s,5 s, 10 s,or 15 s,respectively. The seclioned denlin surfaces were cemenled wilh ResiCem and Panavia F separately for comparison. After 24 hours, water storage, all spec imens were perpendicularly seclioned through the resin-dentin interfaces with a low-speed saw (Isomel) under water cooling. Finally,all the specimens were prepared into beams al about 1mm × 1mm × 8mm. Micro-lensile bond strength was tested. The resin-dentin inter faces were observed with scanning electron microscope (SEM). Results There was no significant difference of TBS lo dentin between ResiCem [ (16.9 ±5. 3) MPa] and Panavia F [ (17.0 ±5. 2) MPa) ] (P >0. 05). However

  2. iSybislaw sprzymierzeńcem studentów, doktorantów oraz pracowników naukowych

    Directory of Open Access Journals (Sweden)

    Marcin Fastyn

    2014-11-01

    Full Text Available iSybislaw is a Bibliographic Database for students, post-graduate students and researchers In this paper the iSybislaw bibliographic database of World Slavic Linguistics publications is presented. The author demonstrates its vast potential as a research tool and citation source, concentrating on the possibilities of using all iSybislaw functions and options in university teaching and scientific research. The author points out that the database can be used not only by students and scientists of Slavic, Polish and Russian philology, but also, even if to a lesser extent, for philologies and linguistics of all languages.   iSybislaw sprzymierzeńcem studentów, doktorantów oraz pracowników naukowych W pracy prezentowana jest bibliograficzna baza danych publikacji z zakresu światowego językoznawstwa slawistycznego. Autor pokazuje jej olbrzymi potencjał jako źródła informacji i cytowań, koncentrując się na możliwościach wykorzystania wszystkich funkcji iSybislawa w nauczaniu uniwersyteckim i pracy naukowej. Zostało podkreślone, że baza danych iSybislaw może być użyteczna nie tylko dla studentów i naukowców zajmujących się slawistyką, polonistyką i rusycystyką, ale także, nawet jeśli w mniejszym stopniu, dla filologów wszystkich języków oraz językoznawców.

  3. Generation of human hybridomas producing migration inhibitory factor (MIF) and of murine hybridomas secreting monoclonal antibodies to human MIF.

    Science.gov (United States)

    Weiser, W Y; Remold, H G; David, J R

    1985-01-01

    Human T-cell hybridomas were established by hybridization of concanavalin A (Con A)-stimulated human peripheral blood T lymphocytes with cells from a 6-thioguanine-resistant, aminopterin-sensitive mutant line designated CEM-WH4, derived from the continuously growing human T cell line, CEM. High levels of MIF activity were demonstrated in the supernatants of two hybridoma lines, T-CEMA and T-CEMB but not of CEM-WH4 when stimulated with phorbol myristate acetate and phytohemagglutinin. In comparison, MIF derived from Con A-stimulated peripheral blood mononuclear cells showed 100 times less activity. Upon isoelectrofocusing, MIF activity of T-CEMB was found exclusively between pH 4.6 and 5.3 whereas MIF derived from T-CEMA showed heterogeneity with a major peak of MIF recovered at pH 4.6-5.3 and a minor peak at pH 2.4-3.3. These molecules, however, were all found to have an apparent MW of 68,000 and were resistant to trypsin. Most of these characteristics are in accordance with second day pH 3- and pH 5-MIF derived from peripheral blood mononuclear cells. When spleen cells from BALB/c mice immunized with T-CEMB-MIF were used to fuse with NS-1 mouse myeloma cells, nine hybridomas secreting antibodies to human MIF were obtained. Clone D112 which demonstrated the highest MIF-neutralizing activity was found to neutralize MIF derived from T-CEMA, peripheral blood mononuclear cells, and a T cell line, Mo.

  4. Health. CEM Probe, January 1977.

    Science.gov (United States)

    Billington, Roy

    The importance of health and its relationship to personal and community life are explored in this issue of PROBE. Designed to acquaint British secondary school youth with topical problems, the series contains discussion and case studies of national and world issues, followed by questions for student discussion and research. Nine chapters comprise…

  5. Differentially expressed cytosolic proteins in human leukemia and lymphoma cell lines correlate with lineages and functions.

    Science.gov (United States)

    Gez, Swetlana; Crossett, Ben; Christopherson, Richard I

    2007-09-01

    Identification of cytosolic proteins differentially expressed between types of leukemia and lymphoma may provide a molecular basis for classification and understanding their cellular properties. Two-dimensional fluorescence difference gel electrophoresis (DIGE) and mass spectrometry have been used to identify proteins that are differentially expressed in cytosolic extracts from four human leukemia and lymphoma cell lines: HL-60 (acute promyelocytic leukemia), MEC1 (B-cell chronic lymphocytic leukemia), CCRF-CEM (T-cell acute lymphoblastic leukemia) and Raji (B-cell Burkitt's lymphoma). A total of 247 differentially expressed proteins were identified between the four cell lines. Analysis of the data by principal component analysis identified 22 protein spots (17 different protein species) differentially expressed at more than a 95% variance level between these cell lines. Several of these proteins were differentially expressed in only one cell line: HL-60 (myeloperoxidase, phosphoprotein 32 family member A, ras related protein Rab-11B, protein disulfide-isomerase, ran-specific GTPase-activating protein, nucleophosmin and S-100 calcium binding protein A4), and Raji (ezrin). Several of these proteins were differentially expressed in two cell lines: Raji and MEC1 (C-1-tetrahydrofolate synthase, elongation factor 2, alpha- and beta-tubulin, transgelin-2 and stathmin). MEC1 and CCRF-CEM (gamma-enolase), HL-60 and CCRF-CEM (ubiquitin-conjugating enzyme E2 N). The differentially expressed proteins identified in these four cell lines correlate with cellular properties and provide insights into the molecular basis of these malignancies.

  6. Final report on supplementary comparison of the calibration of a 5 kg stainless steel standard weight between INDECOPI-PERÚ and CEM-ESPAÑA (SIM.M.M-S10)

    Science.gov (United States)

    Quiroga Rojas, Aldo; Nieves Medina, María

    2012-01-01

    This report summarizes the results of the supplementary comparison SIM.M.M-S10 of a 5 kg stainless steel mass standard between INDECOPI (Peru) and CEM (Spain).The objective of the comparison was to demonstrate the metrological equivalence between the two laboratories. The results of the comparison will be used to support the Calibration and Measurement Capabilities (CMCs) declared by the institutes at 5 kg. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the SIM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

  7. Altered catalytic activity of and DNA cleavage by DNA topoisomerase II from human leukemic cells selected for resistance to VM-26.

    Science.gov (United States)

    Danks, M K; Schmidt, C A; Cirtain, M C; Suttle, D P; Beck, W T

    1988-11-29

    The simultaneous development of resistance to the cytotoxic effects of several classes of natural product anticancer drugs, after exposure to only one of these agents, is referred to as multiple drug resistance (MDR). At least two distinct mechanisms for MDR have been postulated: that associated with P-glycoprotein and that thought to be due to an alteration in DNA topoisomerase II activity (at-MDR). We describe studies with two sublines of human leukemic CCRF-CEM cells approximately 50-fold resistant (CEM/VM-1) and approximately 140-fold resistant (CEM/VM-1-5) to VM-26, a drug known to interfere with DNA topoisomerase II activity. Each of these lines is cross-resistant to other drugs known to affect topoisomerase II but not cross-resistant to vinblastine, an inhibitor of mitotic spindle formation. We found little difference in the amount of immunoreactive DNA topoisomerase II in 1.0 M NaCl nuclear extracts of the two resistant and parental cell lines. However, topoisomerase II in nuclear extracts of the resistant sublines is altered in both catalytic activity (unknotting) of and DNA cleavage by this enzyme. Also, the rate at which catenation occurs is 20-30-fold slower with the CEM/VM-1-5 preparations. The effect of VM-26 on both strand passing and DNA cleavage is inversely related to the degree of primary resistance of each cell line. Our data support the hypothesis that at-MDR is due to an alteration in topoisomerase II or in a factor modulating its activity.

  8. Analysis and Maintenance of Company #5, 6 Units of CEMS Environmental Protection Equipment Research and Common Fault%公司#5、6机组CEMS环保设备研究与常见故障分析及维护方法

    Institute of Scientific and Technical Information of China (English)

    张泽巍

    2014-01-01

    针对华电淄博公司#5、6机组CEMS控制系统频发性故障,通过研究和分析,找出频发性故障的主要原因,介绍改进的方法,提出进一步完善的建议,以保障CEMS设备正常运行。%By analyzing the CEMS control system faults of #5、6 Power Unit Huadian Zibo Co. Ltd. We found out the main causes of frequent fault. Some comments about improvement methods are introduced in order to protect the normal operation of CEMS equipment.

  9. Expression from second-generation feline immunodeficiency virus vectors is impaired in human hematopoietic cells.

    Science.gov (United States)

    Price, Mary A; Case, Scott S; Carbonaro, Denise A; Yu, Xiao-Jin; Petersen, Denise; Sabo, Kathleen M; Curran, Michael A; Engel, Barbara C; Margarian, Hovanes; Abkowitz, Janis L; Nolan, Garry P; Kohn, Donald B; Crooks, Gay M

    2002-11-01

    Vectors based on the feline immunodeficiency virus (FIV) have been developed as an alternative to those based on another lentivirus, human immunodeficiency virus-1 (HIV-1), because of theoretical safety advantages. We compared the efficiency of gene transfer and expression in human and feline hematopoietic progenitors using second-generation HIV-1 and FIV-based vectors. Vector pairs were tested using either human cytomegalovirus or murine phospho-glycerate kinase (PGK) internal promoters and were pseudotyped with the vesicular stomatitis virus G protein (VSV-G). Vector proviral copy numbers were similar in human and feline hematopoietic primary cells and cell lines transduced by HIV-1 or FIV vectors, demonstrating that both vectors are able to transfer genes efficiently to these cell types. HIV-1 vectors were well expressed in human primary hematopoietic cells and cell lines. However, transgene expression from FIV vectors was almost undetectable in human hematopoietic cells. In contrast, the FIV vector was expressed well in primary hematopoietic feline cells and human non-hematopoietic cells, demonstrating that low transgene expression from the FIV vector is a phenomenon specific to human hematopoietic cells. Northern blot analysis demonstrated decreased vector transcript levels in human CEM cells transduced with FIV relative to cells transduced with HIV-1, despite high vector copy numbers. No evidence of vector transcript instability was seen in studies of transduced CEM cells treated with actinomycin D. We conclude that FIV vectors can transfer genes into human hematopoietic cells as effectively as HIV-1 vectors, but that unknown elements in the current FIV backbone inhibit expression from FIV vectors in human hematopoietic cells.

  10. 烟气连续排放监测系统频发性缺陷的处理及预防%Frequent fault prevention and data monitoring management for CEMS

    Institute of Scientific and Technical Information of China (English)

    李育生

    2013-01-01

    Aiming at the problem of failure frequently happened in Continuous Emission Monitoring System(CEMS)system of desulfurizing island of 4×300 MW generating unit in Huaneng Group Ningx⁃ia Daba Power Generation Co.,Ltd.,analyzes reasons of the failure,puts forward the improvement measures. The result shows that adopting measures such as:strengthening management,defect pre⁃vention and enhancing skill of staff,can reduce the rate of failure occurrence and increase operation reliability of equipment,ensures the desulfurization equipment steady and effective operation.%  针对华能宁夏大坝发电有限责任公司4×300 MW机组脱硫岛烟气连续排放监测系统(Continuous Emission Monitoring System, CEMS)在运行中频发故障问题,对故障产生的原因进行分析,提出改进措施。结果表明:采取加强管理、缺陷预防和提高人员技能等措施,可减少缺陷发生率,提高设备运行可靠性,从而保证脱硫环保设备稳定有效运行。

  11. Signaling through P2X7 receptor in human T cells involves p56lck, MAP kinases, and transcription factors AP-1 and NF-kappa B.

    Science.gov (United States)

    Budagian, Vadim; Bulanova, Elena; Brovko, Luba; Orinska, Zane; Fayad, Raja; Paus, Ralf; Bulfone-Paus, Silvia

    2003-01-17

    multiple downstream signaling events in a human T-lymphoblastoid cell line.

  12. Expression of Prostacyclin-Synthase in Human Breast Cancer: Negative Prognostic Factor and Protection against Cell Death In Vitro

    Directory of Open Access Journals (Sweden)

    Thomas Klein

    2015-01-01

    Full Text Available Endogenously formed prostacyclin (PGI2 and synthetic PGI2 analogues have recently been shown to regulate cell survival in various cell lines. To elucidate the significance of PGI2 in human breast cancer, we performed immunohistochemistry to analyze expression of prostacyclin-synthase (PGIS in 248 human breast cancer specimens obtained from surgical pathology files. We examined patients’ 10-year survival retrospectively by sending a questionnaire to their general practitioners and performed univariate analysis to determine whether PGIS expression correlated with patient survival. Lastly, the effects of PGI2 and its analogues on cell death were examined in a human breast cancer cell line (MCF-7 and a human T-cell leukemia cell line (CCRF-CEM. PGIS expression was observed in tumor cells in 48.7% of samples and was associated with a statistically significant reduction in 10-year survival (P=0.038; n=193. Transient transfection of PGIS into MCF-7 cells exposed to sulindac increased cell viability by 50% and exposure to carbaprostacyclin protected against sulindac sulfone induced apoptosis in CCRF-CEM cells. Expression of PGIS is correlated with a reduced patient survival and protects against cell death in vitro, suggesting that PGIS is a potential therapeutic target in breast cancer.

  13. Anti-HIV-1 activity of salivary MUC5B and MUC7 mucins from HIV patients with different CD4 counts

    Directory of Open Access Journals (Sweden)

    Roux Paul

    2010-10-01

    Full Text Available Abstract Background We have previously shown that MUC5B and MUC7 mucins from saliva of HIV negative individuals inhibit HIV-1 activity by 100% in an in vitro assay. The purpose of this subsequent study was to investigate whether MUC5B and MUC7 from saliva of HIV patients or with full blown AIDS had a similar inhibitory activity against the virus. Methods Salivary MUC5B and MUC7 from HIV patients with different CD4 counts ( 400 were incubated with HIV-1 prior to infection of the human T lymphoblastoid cell line (CEM SS cells. Cells were then cultured and viral replication was measured by a qualitative p24 antigen assay. The size, charge and immunoreactivity of mucins from HIV negative and positive individuals was also analysed by SDS-PAGE, Western blot and ELISA respectively. Results It was shown that irrespective of their CD4 counts both MUC5B and MUC7 from HIV patients, unlike the MUC5B and MUC7 from HIV negative individuals, did not inhibit HIV-1 activity. Size, charge and immunoreactivity differences between the mucins from HIV negative and positive individuals and among the mucins from HIV patients of different CD4 count was observed by SDS-PAGE, Western blot and ELISA. Conclusions Purified salivary mucins from HIV positive patients do not inhibit the AIDS virus in an in vitro assay. Although the reason for the inability of mucins from infected individuals to inhibit the virus is not known, it is likely that there is an alteration of the glycosylation pattern, and therefore of charge of mucin, in HIV positive patients. The ability to inhibit the virus by aggregation by sugar chains is thus diminished.

  14. In Vitro Cytotoxic Effects of Cuscuta chinensis Whole Extract on Human Acute Lymphoblastic Leukemia Cell Line

    Directory of Open Access Journals (Sweden)

    Fatemeh Zeraati

    2010-12-01

    Full Text Available Background: One of the major paths for drug development isthe study of bioactivities of natural products. Therefore, theaim of this study was to compare the cytotoxic effects ofaqueous extract of whole Cuscuta chinensis Lam., which is atraditional medicinal herb commonly used in Iran and otheroriental countries, on the human caucasian acute lymphoblasticleukemia (CCRF-CEM and another human lymphocyte,Jurkat (JM cell lines.Methods: In vitro cytotoxic screening with various concentrations(0, 0.1, 1, 10, 25 and 50 μg/ml of the extract wasperformed using microscope and methyl tetrazolium bromidetest (MTT.Results: The minimum effective concentration of the plantextract was 1 μg/ml, and increasing the dose to 10 μg/mlinduced increasingly stronger effects. The inhibitory concentration50% (IC50 of the extract against CCRF wasabout 3 μg/ml in 24 hours and 2.5 μg/ml in 48 hrs. In contrast,the extract did not have cytotoxic effect for the JMcells at these doses.Conclusion: The findings of the present study suggest that C.chinensis is toxic against CCRF-CEM and JM tumor cells.Whether or not such effects can be employed for the treatmentof such tumors must await future studies.Iran J Med Sci 2010; 35(4: 310-314.

  15. Distinct replicative and cytopathic characteristics of human immunodeficiency virus isolates.

    Science.gov (United States)

    Fenyö, E M; Morfeldt-Månson, L; Chiodi, F; Lind, B; von Gegerfelt, A; Albert, J; Olausson, E; Asjö, B

    1988-01-01

    According to their capacity to replicate in vitro, human immunodeficiency virus (HIV) isolates can be divided into two major groups, rapid/high and slow/low. Rapid/high viruses can easily be transmitted to a variety of cell lines of T-lymphoid (CEM, H9, and Jurkat) and monocytoid (U937) origin. In contrast, slow/low viruses replicate transiently, if at all, in these cell lines. Except for a few isolates, the great majority of slow/low viruses replicate in peripheral blood mononuclear cells and Jurkat-tatIII cells constitutively expressing the tatIII gene of HIV-1. The viruses able to replicate efficiently cause syncytium formation and are regularly isolated from immunodeficient patients. Poorly replicating HIV isolates, often obtained from individuals with no or mild disease, show syncytium formation and single-cell killing simultaneously or, with some isolates, cell killing only. Images PMID:2459416

  16. Law and Society. CEM Probe, May 1977.

    Science.gov (United States)

    Bunker, Peter; Bunker, John

    The pamphlet is one issue of the PROBE series which gives British secondary school youth an overview of social issues and suggests questions for discussion. Information and issues about law and justice in England and Wales are discussed in this issue. Section one explains the differences between criminal law, which is enforced by the police, and…

  17. Work. CEM Topic Folder Number Two.

    Science.gov (United States)

    Christian Education Movement, London (England).

    This document is designed to help British secondary school students and other young adults understand the nature of work before they become wage earners. The document comprises a folder and eight loose-leaf flyers dealing with aspects of work. Work is interpreted to include industry, commerce, distribution, public services, and other paid or…

  18. Our World. CEM Topic Folder No. 3.

    Science.gov (United States)

    Undy, Harry

    The aim of this pamphlet is to make secondary school students aware of the interdependence of peoples throughout the world and of their own responsibility to the world at large. The pamphlet is written from a Christian and a socioeconomic perspective. The text is arranged into the following broad areas of continuing world problems: the Third…

  19. CEMS of nitride coatings in agressive environments

    Energy Technology Data Exchange (ETDEWEB)

    Hanzel, D. [University of Ljubljana, J. Stefan Institute (Slovenia); Agudelo, A.C.; Gancedo, J.R. [Instituto de Quimica-Fisica ' Rocasolano' , CSIC (Spain); Lakatos-Varsanyi, M. [Eoetvoes University, Department of Physical Chemistry (Hungary); Marco, J.F. [Instituto de Quimica-Fisica ' Rocasolano' , CSIC (Spain)

    1998-12-15

    The corrosion properties of single layered TiN and CrN films have been compared to bi-layered and multi-layered Ti/TiN films. XPS has showed that in humid SO{sub 2} atmosphere the best corrosion properties have been achieved by a multi-layered Ti/TiN coating. Cyclic voltammetry in acetate buffer has been applied to measure the porousity and corrosion resistance of coatings. The best results have been achieved by multi-layered Ti/TiN and CrN films. Conversion electron Moessbauer spectroscopy has been used to study the changes in the interface Fe/TiN during thermal treatment in UHV. It has been shown that the amount of iron nitrides in the interface increases with increasing temperature.

  20. Significant anti-proliferation of human acute lymphoblastic leukemia cells by combined treatment with chloroquine and dexamethasone%氯喹对地塞米松抑制急性淋巴细胞白血病细胞增殖的促进作用

    Institute of Scientific and Technical Information of China (English)

    周越菡; 赵关关; 杜敏; 吴宗锴; 段小群

    2014-01-01

    目的:研究氯喹对地塞米松抑制急性淋巴细胞白血病细胞增殖的促进作用及其机制。方法:采用CCK-8实验观察氯喹对地塞米松抑制人急性淋巴细胞白血病细胞株CEM-C1增殖的促进作用,并采用Western blot-ting、实时定量PCR和LysoTracker Red溶酶体染色法验证此种促进作用的机制。结果:氯喹与地塞米松合用对CEM-C1细胞增殖的抑制明显高于正常对照组(P<0.01)。氯喹与地塞米松联用上调糖皮质激素受体(GR)的蛋白质水平并抑制溶酶体功能,而溶酶体抑制剂bafilomycin A1亦可上调GR的蛋白质水平。结论:氯喹与地塞米松联用通过溶酶体介导的机制发挥抑制急性淋巴细胞白血病细胞增殖的作用。%AIM:To explore the promoting action of chloroquine on the anti-proliferation effect of dexametha-sone on acute lymphoblastic leukemia cells .METHODS:CCK-8 assay was used to assess the viability of the dexametha-sone-resistant human acute lymphoblastic leukemia CEM-C1 cell line treated with the combination of chloroquine and dexa-methasone .Western blotting , quantitative real-time PCR and LysoTracker Red staining were utilized to examine the mecha-nism.RESULTS:Combination of chloroquine and dexamethasone significantly inhibited the proliferation of CEM -C1 cells compared with control group (P<0.01).The combination of chloroquine and dexamethasone increased the abundance of glucocorticoid receptor and inhibited lysosomal function , while lysosomal inhibitor bafilomycin A 1 also increased glucocorti-coid signaling .CONCLUSION:Dexamethasone combined with chloroquine triggers an anti-proliferation effect on CEM-C1 cells via a lysosome-mediated pathway .

  1. Fetal calf serum heat inactivation and lipopolysaccharide contamination influence the human T lymphoblast proteome and phosphoproteome

    Directory of Open Access Journals (Sweden)

    Rahman Hazir

    2011-11-01

    Full Text Available Abstract Background The effects of fetal calf serum (FCS heat inactivation and bacterial lipopolysaccharide (LPS contamination on cell physiology have been studied, but their effect on the proteome of cultured cells has yet to be described. This study was undertaken to investigate the effects of heat inactivation of FCS and LPS contamination on the human T lymphoblast proteome. Human T lymphoblastic leukaemia (CCRF-CEM cells were grown in FCS, either non-heated, or heat inactivated, having low ( Results A total of four proteins (EIF3M, PRS7, PSB4, and SNAPA were up-regulated when CCRF-CEM cells were grown in media supplemented with heat inactivated FCS (HE as compared to cells grown in media with non-heated FCS (NHE. Six proteins (TCPD, ACTA, NACA, TCTP, ACTB, and ICLN displayed a differential phosphorylation pattern between the NHE and HE groups. Compared to the low concentration LPS group, regular levels of LPS resulted in the up-regulation of three proteins (SYBF, QCR1, and SUCB1. Conclusion The present study provides new information regarding the effect of FCS heat inactivation and change in FCS-LPS concentration on cellular protein expression, and post-translational modification in human T lymphoblasts. Both heat inactivation and LPS contamination of FCS were shown to modulate the expression and phosphorylation of proteins involved in basic cellular functions, such as protein synthesis, cytoskeleton stability, oxidative stress regulation and apoptosis. Hence, the study emphasizes the need to consider both heat inactivation and LPS contamination of FCS as factors that can influence the T lymphoblast proteome.

  2. Shear bond strength of two resin cements to human root dentin using three dentin bonding agents.

    Science.gov (United States)

    Gogos, C; Stavrianos, C; Kolokouris, I; Economides, N; Papadoyannis, I

    2007-01-01

    This study compared the bond strength of two resin cements to human root dentin when used with three bonding agents. The materials used were Rely X ARC and Perma Cem, two one-bottle bonding agents (Single Bond, Bond-1) and one self-etching bonding agent (Clearfil SE Bond). The dentin was obtained from single rooted human teeth, and the specimens were treated with either 15% EDTA or 37% phosphoric acid to remove the smear layer, except in groups where the self-etching bonding agent was used. The resin cements were placed on dentin surfaces with the use of bonding agents. Shear bond strength (SBS) was tested using a single plane shear test assembly. The dentin specimens were divided into 10 groups. Eight groups were pre-treated with EDTA or phosphoric acid to remove the smear layer, followed by a bonding agent (Bond-1 or Single Bond) and resin cement (Rely X or Perma Cem). In the two remaining groups, the smear layer was left intact, and the two resins cements were used in combination with the self-etching bonding agent (Clearfil SE Bond). No statistically significant differences were observed among the eight groups treated with one-bottle bonding agents. The mean bond strengths of the two groups treated with the self-etching bonding agent did not differ significantly from each other but were both significantly greater than the bond strengths of all the other groups. The results of this study also showed that EDTA can be used as an alternative to phosphoric acid in bonding procedures for resin cements. However, the bond strengths of resin cements, in combination with a self-etching bonding agent, were significantly greater than those of the same cements when used with one-bottle bonding agents.

  3. Human See, Human Do.

    Science.gov (United States)

    Tomasello, Michael

    1997-01-01

    A human demonstrator showed human children and captive chimpanzees how to drag food or toys closer using a rakelike tool. One side of the rake was less efficient than the other for dragging. Chimps tried to reproduce results rather than methods while children imitated and used the more efficient rake side. Concludes that imitation leads to…

  4. HIV-specific humoral and cellular immunity in rabbits vaccinated with recombinant human immunodeficiency virus-like gag-env particles

    Energy Technology Data Exchange (ETDEWEB)

    Haffar, O.K.; Smithgall, M.D.; Moran, P.A.; Travis, B.M.; Zarling, J.M.; Hu, S.L. (Department of Virology, Bristol-Myers Squibb Pharmaceutical Research Institute-Seattle, WA (USA))

    1991-08-01

    Recombinant human immunodeficiency virus type-1 (HIV-1)-like gag-env particles produced in mammalian cells were inoculated into two New Zealand white rabbits. In parallel, two control rabbits were inoculated with the homologous HIV-1 virions inactivated by ultraviolet light (uv) and psoralen treatments. The humoral and cellular immune responses to HIV-1 were evaluated for both groups of animals. Recombinant particles elicited humoral immunity that was specific for all the viral structural proteins. The antibodies recognized both denatured and nondenatured proteins. Moreover, the sera neutralized the in vitro infectivity of the homologous virus in CEM cells. Importantly, the recombinant particles also generated a T helper response by priming with the HIV proteins. Similar results were observed with inactivated virus immunization. Therefore, the authors results suggest that the recombinant HIV-like particles elicit functional humoral immunity as well as cellular immunity and represent a novel vaccine candidate for AIDS.

  5. Ferrocenyl and dicobalt hexacarbonyl chromones--new organometallics inducing oxidative stress and arresting human cancer cells in G2/M phase.

    Science.gov (United States)

    Kowalski, Konrad; Hikisz, Paweł; Szczupak, Łukasz; Therrien, Bruno; Koceva-Chyła, Aneta

    2014-06-23

    The straightforward syntheses of four new ferrocenyl and dicobalt hexacarbonyl chromones are presented. The redox behavior of the novel metallo-chromones has been examined by cyclic voltammetry (CV), revealing a reversible behavior of the ferrocenyl groups, while the dicobalt hexacarbonyl derivatives show irreversible oxidation. The anticancer activity of the products has been evaluated against hepatocellular carcinoma (Hep G2), ER+ (MCF-7) and ER- (MDA-MB-231) breast adenocarcinoma, and leukemic (CCRF-CEM) human cancer cell lines. The mechanism of action for the most active complexes has been investigated and it seems to involve oxidative stress and apoptosis induction. Moreover, the results show that the investigated metallo-chromones generate damage to DNA and arrest the cell cycle in G2/M phase.

  6. Human rights

    NARCIS (Netherlands)

    Gaay Fortman, B. de

    2006-01-01

    Human rights reflect a determined effort to protect the dignity of each and every human being against abuse of power. This endeavour is as old as human history. What is relatively new is the international venture for the protection of human dignity through internationally accepted legal standards an

  7. Human Rights, Human Needs, Human Development, Human Security

    OpenAIRE

    Gasper, Des

    2009-01-01

    Human rights, human development and human security form increasingly important, partly interconnected, partly competitive and misunderstood ethical and policy discourses. Each tries to humanize a pre-existing and unavoidable major discourse of everyday life, policy and politics; each has emerged within the United Nations world; each relies implicitly on a conceptualisation of human need; each has specific strengths. Yet mutual communication, understanding and co-operation are deficient, espec...

  8. CE-MS of antihistamines using nonvolatile phosphate buffer.

    Science.gov (United States)

    Chien, Chiu-Tang; Li, Fu-An; Huang, Ju-Li; Her, Guor-Rong

    2007-05-01

    Antihistamines were analyzed by CE-ESI-MS using phosphate buffer. The separation was performed in an acidic environment so that phosphate ions had a net velocity flowing toward the inlet reservoir instead of the ESI source. To further reduce the effect of ion suppression, the sodium ion in sodium phosphate was replaced with an ammonium ion. Furthermore, with the combination of reducing the concentration of acid added to the sheath liquid and the use of a low-flow interface, phosphoric acid could be added to the sheath liquid. Because of the use of the same counterion (phosphate ion) in running buffer and in sheath liquid, the separation integrity (resolution, elution order, and peak shape) was preserved. In addition, ion suppression was also greatly alleviated because a minimal amount of phosphate flowed into the ESI source.

  9. Development of Low Maintenance, Field Ruggedized SO3 CEM

    Energy Technology Data Exchange (ETDEWEB)

    Ashley D. Williamson; Joseph D. McCain

    2005-07-31

    A prototype semi-continuous monitor and associated particulate-free sample extraction probe have been developed for measuring the concentrations of SO{sub 3} and H{sub 2}SO{sub 4} in industrial flue gases. The monitor provides two measurements per hour for concentrations above 1 ppmv. The probe provides the capability of continuous operation while avoiding passing the sample through a layer of particulate and can be used as a probe for conventional controlled condensation measurements of SO{sub 3} and H{sub 2}SO{sub 4} emissions.

  10. Efficient and stable perfectly matched layer for CEM

    KAUST Repository

    Duru, Kenneth

    2014-02-01

    An efficient unsplit perfectly matched layer for numerical simulation of electromagnetic waves in unbounded domains is derived via a complex change of variables. In order to surround a Cartesian grid with the PML, the time-dependent PML requires only one (scalar) auxiliary variable in two space dimensions and six (scalar) auxiliary variables in three space dimensions. It is therefore cheap and straightforward to implement. We use Fourier and energy methods to prove the stability of the PML. We extend the stability result to a semi-discrete PML approximated by central finite differences of arbitrary order of accuracy and to a fully discrete problem for the \\'Leap-Frog\\' schemes. This makes precise the usefulness of the derived PML model for longtime simulations. Numerical experiments are presented, illustrating the accuracy and stability of the PML. © 2013 IMACS.

  11. Dilemmas in Medicine, 2nd Edition 1977. CEM Probe.

    Science.gov (United States)

    Undy, Harry, Ed.

    Published for secondary school youth in England, the PROBE series presents provocative information and discussion questions on topical themes. The focus of this issue is on aspects of medicine which raise moral dilemmas for doctors, patients, and society in general. This issue contains case studies which illustrate ethical questions raised by the…

  12. Programed Learning and Mathematical Education, A CEM Study.

    Science.gov (United States)

    May, Kenneth O.

    This study reports on the position of programed learning in the teaching of college mathematics. A historical survey is given describing the following programing styles: Skinner, Crowder, eclectic, hybrid, Pressey, and problem. Conclusions based on research are given to claims about the benefits of programing including those of: providing for…

  13. Conflict Management in Education. ERIC/CEM Research Review.

    Science.gov (United States)

    Piele, Philip K.

    Because conflict has become a pervasive element within the school environment as well as in the larger community, this review, based on reports abstracted in RIE, focuses on conflict management. Such management seeks and uses ways to understand and deal with the differing opinions, needs, and ideas that are a part of the contemporary school. The…

  14. Clinical effects and toxicity of CEM conditioning regimen combined with autologous peripheral blood stem cell transplantation on treatment of high-risk stage Ⅳ neuroblastoma in children%自体造血干细胞移植治疗Ⅳ期神经母细胞瘤疗效分析

    Institute of Scientific and Technical Information of China (English)

    廉红云; 王彬; 周翾; 马晓莉; 张永红; 朱光华; 杨骏; 秦茂权

    2011-01-01

    目的 对以CEM(卡铂+依托泊苷+马法兰)为预处理方案的自体外周血造血干细胞移植术治疗20例Ⅳ期神经母细胞瘤患儿的疗效及不良反应进行评价.方法 2007年5月-2009年11月我科收治的Ⅳ期神经母细胞瘤患儿20例,中位年龄4.3岁(1.8~8.7岁),中位体重15.5 kg(9-22.5 kg);原发灶4例为纵隔,16例为肾上腺.14例患儿存在骨髓转移.5例经强化疗、手术减积治疗后仍存在残留病灶,为带瘤移植.预处理方案为CEM方案.结果 移植后中位随访时间为17.35个月(2~36个月),1例失访,带瘤移植组(n=5)中3例死亡,1例颅内复发放疗后仍存活,1例无疾病进展存活.移植前完全缓解组(n=15)随访14例,4例死亡,8例无疾病进展存活,2例复发仍存活.回输的CD34+细胞中位数为5.346(1.54~10.3)×106/kg,全部患儿移植后均获得造血重建,在骨髓空巢期均出现发热,4例出现败血症,致病菌分别为少酸链球菌、近平滑念珠菌、大肠埃希菌、表皮葡萄球菌感染,经抗感染治疗后痊愈.髓外毒性包括:18例Ⅱ度肝功能损害,16例Ⅰ度口腔黏膜炎,13例Ⅰ度腹泻,5例Ⅱ度腹泻,2例Ⅰ度心脏不良反应.无移植相关性死亡.结论 自体外周血造血干细胞移植术对移植前达到完全缓解的Ⅳ期神经母细胞瘤患儿有较好疗效,对部分缓解期患儿可提高缓解率,不良反应可逆,耐受性可.%Objective To investigate the clinical effects and toxicity of patients treated with CEM conditioning regimen combined with autologous peripheral blood stem cell transplantation in high-risk stage Ⅳ neuroblastoma of childhood.Methods Twenty patients with high-risk neuroblastoma were treated in our hospital from May of 2007 to November of 2009.The median age was 4.3 years old.Primary sites of the tumors included mediastinum ( n = 4 ), and adrenal gland ( n = 16).Fourteen patients had bone-marrow metastases.Fifteen patients got CR (complete remission) while 5 patients

  15. Human microbiomics

    OpenAIRE

    Rajendhran, J.; P. Gunasekaran

    2010-01-01

    The sequencing of the human genome has driven the study of human biology in a significant way and enabled the genome-wide study to elucidate the molecular basis of complex human diseases. Recently, the role of microbiota on human physiology and health has received much attention. The influence of gut microbiome (the collective genomes of the gut microbiota) in obesity has been demonstrated, which may pave the way for new prophylactic and therapeutic strategies such as bacteriotherapy. The sig...

  16. Human Smuggling

    NARCIS (Netherlands)

    Siegel - Rozenblit, Dina; Zaitch, Damian

    2014-01-01

    Human smuggling is based on a consensus between smuggler, smuggled, and his/her family (which usually guarantees or effectuates payment). However, unauthorized immigrants are violating immigration laws and human smugglers are profiting from enabling illegal immigration. Both human smuggling and its

  17. Possíveis efeitos adversos dos campos eletromagnéticos (50/60 Hz em humanos e em animais Potential adverse effects of electromagnetic fields (50/60 Hz on humans and animals

    Directory of Open Access Journals (Sweden)

    Caroline Wanderley Souto Ferreira Anselmo

    2005-12-01

    Full Text Available Os avanços tecnológicos têm aumentado o número de equipamentos elétricos e eletrônicos, seja nas residências ou mesmo no ambiente de trabalho, fazendo com que a população conviva com grande número de fontes de irradiação eletromagnética, com os mais diversos níveis de potência e freqüência. Por muitos anos, alguns cientistas e engenheiros acreditaram que o campo eletromagnético (CEM com freqüência extremamente baixa não pudesse causar efeitos e alterações significantes no material biológico. O objetivo deste trabalho é verificar os possíveis efeitos adversos dos CEMs em humanos e animais, que foram publicados nos últimos anos, através de uma revisão da literatura disponível em Medline, revistas nacionais e internacionais e catálogos de obras de referência na área dos CEM (50/60 Hz. Como resultado foi observado que o CEM (50/60 Hz é capaz de produzir diversos efeitos adversos em humanos e animais, como por exemplo: distúrbios na reprodução, doenças degenerativas, efeitos psiquiátricos e psicológicos, alterações citogenéticas, alterações no sistema cardiovascular, nervoso e neuroendócrino, bem como nos parâmetros biológicos e bioquímicos. Apesar de todas estas constatações e devido a muitas controvérsias entre vários autores, faz-se necessário um estudo mais específico e aprofundado sobre o assunto.The technologic development has increased the number of electric and electronic devices for household and work environment applications. In this way, we have to cope with a diverse quantity of electromagnetic irradiation sources, with different power and frequency ranges. For many years, some scientists and engineers believed that low-frequencies electromagnetic field (EMF could not cause any bad effect or substantial alterations on the biologic livings. This work has the objective to perform a literature review of the possible effects of EMF in human beings and animals, that was published in the

  18. Human Rights/Human Needs.

    Science.gov (United States)

    Canning, Cynthia

    1978-01-01

    The faculty of Holy Names High School developed an interdisciplinary human rights program with school-wide activities focusing on three selected themes: the United Nations Universal Declaration of Human Rights, in conjunction with Human Rights Week; Food; and Women. This article outlines major program activities. (SJL)

  19. Apoptosis Induction in Human Leukemia Cell Lines by Gold Nanoparticles Synthesized Using the Green Biosynthetic Approach

    Directory of Open Access Journals (Sweden)

    Farideh Namvar

    2015-01-01

    Full Text Available Gold nanoparticles were grown on Sargassum muticum water extract (S-GNPs using the green biosynthetic approach. The nanoparticles were characterized using UV-visible spectroscopy, zeta potential, and transmission electron microscopy (TEM. The resulting S-GNPs were spherical and crystalline with a size of <10 nm. The in vitro anticancer activity was demonstrated in human leukemia cell lines. The cancer cells were treated with different concentrations of S-GNPs, and calorimetric (MTT assay used for the cytotoxicity test, which resulted in an IC50 value of 4.22 ± 1.12, 5.71 ± 1.4, 6.55 ± 0.9, and 7.29 ± 1.7 μg/mL for each of the K562, HL-60, Jurkat, and CEM-ss cells, respectively. Thus, the K562 was selected for the next experiments. Furthermore, apoptosis induction was confirmed by Hoechst 33342, annexin V staining, and caspase-3/-9 activity tests. The cell cycle analysis exhibited a significant increase in the accumulation of S-GNPs treated cells at the sub-G1 phase, demonstrating the induction of apoptosis by S-GNPs. The nature of the inhibition of cancer cell growth by S-GNPs could open the way for further research in the design of green synthesis therapeutic agents, particularly in nanomedicine, for the treatment of cancer.

  20. Primary anti-proliferative activity evaluation of 1-(quinolizidin-1'-yl)methyl- and 1-([Formula: see text]-tert-amino)alkyl-substituted 2-phenyl-, 2-benzyl- and 2-[(benzotriazol-1/2-yl)methyl]benzimidazoles on human cancer cell lines.

    Science.gov (United States)

    Tonelli, Michele; Tasso, Bruno; Mina, Lorenzo; Paglietti, Giuseppe; Boido, Vito; Sparatore, Fabio

    2013-08-01

    Twenty benzimidazole derivatives bearing in position 1 a ([Formula: see text]-tert-amino)alkyl chain (mainly quinolizidin-1-ylmethyl) and in position 2 an aromatic moiety (phenyl, benzyl or benzotriazol-1/2-ylmethyl) were evaluated at the National Cancer Institute (NCI) for anti-proliferative activity against a panel of 60 human cancer cell lines. Four compounds (6, 7, 9 and 10) displayed a large spectrum of activity with [Formula: see text] 10 [Formula: see text] on 24-57 cell lines, while thirteen compounds exhibited sub-micromolar or even nanomolar activity against single cell lines, such as leukemia CCRF-CEM, HL-60 and MOLT-4, CNS cancer SF-268 and, particularly, renal cancer UO-31, sometimes with outstanding selectivity (compounds 5-7, 11, 13 and 18).

  1. Digital Humanities

    DEFF Research Database (Denmark)

    Brügger, Niels

    2016-01-01

    Digital humanities is an umbrella term for theories, methodologies, and practices related to humanities scholarship that use the digital computer as an integrated and essential part of its research and teaching activities. The computer can be used for establishing, finding, collecting......, and preserving material to study, as an object of study in its own right, as an analytical tool, or for collaborating, and for disseminating results. The term "digital humanities" was coined around 2001, and gained currency within academia in the following years. However, computers had been used within...... the humanities for decades, starting with research fields such as humanities computing or computational linguistics in the 1950s, and later new media studies and internet studies. The historical development of digital humanities has been characterized by a focus on three successive, but co-existing types...

  2. Human evolution

    DEFF Research Database (Denmark)

    Llamas, Bastien; Willerslev, Eske; Orlando, Ludovic

    2017-01-01

    , and true population genomic studies of Bronze Age populations. Among the emerging areas of aDNA research, the analysis of past epigenomes is set to provide more new insights into human adaptation and disease susceptibility through time. Starting as a mere curiosity, ancient human genetics has become......The field of human ancient DNA (aDNA) has moved from mitochondrial sequencing that suffered from contamination and provided limited biological insights, to become a fully genomic discipline that is changing our conception of human history. Recent successes include the sequencing of extinct hominins...

  3. Human kapital

    DEFF Research Database (Denmark)

    Grosen, Anders; Nielsen, Peder Harbjerg

    2007-01-01

    finansiel og human kapital. Den traditionelle rådgivnings snævre synsvinkel kan føre til forkerte investeringsråd. Der skal derfor opfordres til, at de finansielle virksomheder i tilrettelæggelsen af deres rådgivning af private kunder systematisk inddrager den humane kapitals størrelse og karakteristika i...

  4. Human trichuriasis

    DEFF Research Database (Denmark)

    Betson, Martha; Søe, Martin Jensen; Nejsum, Peter

    2015-01-01

    Human trichuriasis is a neglected tropical disease which affects hundreds of millions of people worldwide and is particularly prevalent among children living in areas where sanitation is poor. This review examines the current knowledge on the taxonomy, genetics and phylogeography of human Trichuris...

  5. Think Human

    DEFF Research Database (Denmark)

    Nielsen, Charlotte Marie Bisgaard

    2013-01-01

    years' campaigns suggests that the theory of communication underlying the campaign has its basis in mechanical action rather than in human communication. The practice of 'Communication design' is investigated in relation to this metaphorical 'machine thinking' model of communication and contrasted...... with the human-centered theory of communication advocated by integrationism....

  6. Teaching humanism.

    Science.gov (United States)

    Stern, David T; Cohen, Jordan J; Bruder, Ann; Packer, Barbara; Sole, Allison

    2008-01-01

    As the "passion that animates authentic professionalism," humanism must be infused into medical education and clinical care as a central feature of medicine's professionalism movement. In this article, we discuss a current definition of humanism in medicine. We will also provide detailed descriptions of educational programs intended to promote humanism at a number of medical schools in the United States (and beyond) and identify the key factors that make these programs effective. Common elements of programs that effectively teach humanism include: (1) opportunities for students to gain perspective in the lives of patients; (2) structured time for reflection on those experiences; and (3) focused mentoring to ensure that these events convert to positive, formative learning experiences. By describing educational experiences that both promote and sustain humanism in doctors, we hope to stimulate the thinking of other medical educators and to disseminate the impact of these innovative educational programs to help the profession meet its obligation to provide the public with humanistic physicians.

  7. Human Technology and Human Affects

    DEFF Research Database (Denmark)

    Fausing, Bent

    2009-01-01

    - is the prophecy. This personification or anthropomorphism is important for the branding of new technology. The technology is seen as creating a technotranscendens towards a more qualified humanity, which is in contact with the fundamental human values like intuition, vision, and sensing; all the qualities...

  8. Human Computation

    CERN Document Server

    CERN. Geneva

    2008-01-01

    What if people could play computer games and accomplish work without even realizing it? What if billions of people collaborated to solve important problems for humanity or generate training data for computers? My work aims at a general paradigm for doing exactly that: utilizing human processing power to solve computational problems in a distributed manner. In particular, I focus on harnessing human time and energy for addressing problems that computers cannot yet solve. Although computers have advanced dramatically in many respects over the last 50 years, they still do not possess the basic conceptual intelligence or perceptual capabilities...

  9. Human Toxicity

    DEFF Research Database (Denmark)

    Jolliet, Olivier; Fantke, Peter

    2015-01-01

    . The first section of this chapter outlines the complete cause-effect pathway, from emissions of toxic substances to intake by the population up to damages in terms of human health effects. Section 2 outlines the framework for assessing human toxicity in LCIA. Section 3 discusses the contributing substances......This chapter reviews the human toxicological impacts of chemicals and how to assess these impacts in life cycle impact assessment (LCIA), in order to identify key processes and pollutants. The complete cause-effect pathway – from emissions of toxic substances up to damages on human health...... – demonstrates the importance to account for both outdoor and indoor exposure, including consumer products. Analysing the variations in intake fraction (the fraction of the emitted or applied chemical that is taken in by the consumer and the general population), effect factor and characterisation factor across...

  10. Human influences

    NARCIS (Netherlands)

    Lanen, van H.A.J.; Kasparek, L.; Novicky, O.; Querner, E.P.; Fendeková, M.; Kupczyk, E.

    2004-01-01

    Human activities can cause drought, which was not previously reported (man-induced hydrological drought). Groundwater abstractions for domestic and industrial use are a well-known example of such an environmental change

  11. Human phantom

    CERN Multimedia

    CERN PhotoLab

    1973-01-01

    This human phantom has been received by CERN on loan from the State Committee of the USSR for the Utilization of Atomic Energy. It is used by the Health Physics Group to study personel radiation doses near the accelerators.

  12. Human mycoses

    Directory of Open Access Journals (Sweden)

    Tasić Siniša B.

    2005-01-01

    Full Text Available Fungi are an independent group of plant kingdom which members do not contain chlorophyll and have no capability of photo synthesizing, meaning that they can not synthesize nutritive compounds, so they exist as the saprophytes or parasites of plants, animals and humans. Between 50.000 and 100.000 species are known, but only about 100 species cause diseases (mycoses of humans or animals, while many other cause diseases of plants. Only the dermatophytes and species of genus Candida are usually transferable from human to human. The importance of fungi was certainly less than that of the bacteria and viruses for the time being, but their role as the opportunist pathogens is unavoiding, especially for immunocompromised patients. Incidence of fungal infections grows steadily, even in the countries with high level of general and health culture. Diagnosis and therapy of fungal infections are many times unadequate. Prophylaxis is still an object of discussion.

  13. Human Echolocation

    OpenAIRE

    Teng, Santani

    2013-01-01

    The use of active natural echolocation as a mobility aid for blind humans has received increased scientific and popular attention in recent years (Engber, 2006; Kreiser, 2006; NPR, 2011), in part due to a focus on several blind individuals who have developed remarkable expertise. However, perhaps surprisingly, the history of empirical human echolocation research is not much younger than the era of echolocation research (cf. Griffin, 1958). Nevertheless, compared to its bat and cetacean count...

  14. Human energy

    OpenAIRE

    2010-01-01

    In the midst of big-oil record profits and growing debate on global warming, the Chevron Corporation launched its “Human Energy” public relations campaign. In television commercials and print advertisements, Chevron portrays itself as a compassionate entity striving to solve the planet’s energy crisis. Yet, the first term in this corporate oxymoron misleadingly reframes the significance of the second, suggesting that the corporation has a renewed focus. In depicting Chevron as a green/human o...

  15. Human ehrlichiosis

    Directory of Open Access Journals (Sweden)

    Đokić Milomir

    2006-01-01

    Full Text Available Background. Human ehrlichiosis is a newly recognized disease. It is a tick-borne disease caused by several bacterial species of the genhus Erlichia. These are small gram-negative pleomorphic cocci, that are obligatory intracellular bacteria. Tick Ixodes is the principle vector in Europe, and Amblyomma americanum in the United States. Bacterial organisms replicate in a tick, and are transmited from infected cells in a vector to the blood cells of animals or humans. Human ehrlichiosis is a name for a group of diseases caused by different species of Ehrlichia. One of them is the disease named human monocytic ehrlichiosis, caused by Ehrlichia chaffeensis, and the other is a human granulocytic ehrlichiosis caused by Anaplasma phagocytophilia. Case report. We reported a 23-year-old patient admitted for the clinical treatment with the symptoms of high febrility (above 40 °C, headache, vomiting, general weakness and exhaustion, but without data on a tick bite. The patient was treated with trimetoprim-sulfamethoxazole for a week when Ehrlichia chaffeensis was confirmed by the immunofluoroscence test, and the therapy contimed with doxacyclin. Conclusion. Human ehrlichiosis is also present in our country, so this disease should be considered everyday, especially in infectology practice.

  16. The role of crude human saliva and purified salivary MUC5B and MUC7 mucins in the inhibition of Human Immunodeficiency Virus type 1 in an inhibition assay

    Directory of Open Access Journals (Sweden)

    Lotz Zoë E

    2006-11-01

    Full Text Available Abstract Background Despite the continuous shedding of HIV infected blood into the oral cavity and the detectable presence of the AIDS virus at a high frequency, human saliva is reported to inhibit oral transmission of HIV through kissing, dental treatment, biting, and aerosolization. The purpose of this study was to purify salivary MUC5B and MUC7 mucins from crude saliva and determine their anti-HIV-1 activities. Methods Following Sepharose CL-4B column chromatography and caesium chloride isopycnic density-gradient ultra-centrifugation, the purity and identity of the mucins was determined by SDS-PAGE and Western blotting analysis respectively. Subsequently an HIV-1 inhibition assay was carried out to determine the anti-HIV-1 activity of the crude saliva and purified salivary mucins by incubating them with subtype D HIV-1 prior to infection of the CD4+ CEM SS cells. Results Western blotting analysis confirmed that the mucin in the void volume is MUC5B and the mucin in the included volume is MUC7. The HIV inhibition assay revealed that both the crude saliva and salivary MUC5B and MUC7 mucins inhibited HIV-1 activity by 100%. Conclusion Although the mechanism of action is not clear the carbohydrate moieties of the salivary mucins may trap or aggregate the virus and prevent host cell entry.

  17. Tyrosine polysulfation of human salivary histatin 1. A post-translational modification specific of the submandibular gland.

    Science.gov (United States)

    Cabras, Tiziana; Fanali, Chiara; Monteiro, Joana A; Amado, Francisco; Inzitari, Rosanna; Desiderio, Claudia; Scarano, Emanuele; Giardina, Bruno; Castagnola, Massimo; Messana, Irene

    2007-07-01

    Histatin 1 (His-1) derivatives showing serial mass increases of 80.0 +/- 0.1 Da were detected in human saliva by HPLC-ESI-MS. The same derivatives were also found in granules of submandibular glands and secretions of submandibular/sublingual glands, but not in granules and secretions of parotid glands. Only one phosphate group was present in His-1 and its derivatives, since treatment with alkaline phosphatase provided an 80.0 Da mass decrease. His-1 derivatives were almost completely transformed into His-1 by treatment with 1 M HCl at 100 degrees C, suggesting the presence of O-sulfotyrosine, which is more labile than phospho-Tyr to acidic hydrolysis. CE-MS analysis of pronase extensive digestion of derivatives confirmed the presence of sulfotyrosine. Derivatives were digested by trypsin, proteinase K, and protease V-8 and analyzed by different MS strategies. The results allowed locating sulfation on the last four tyrosines (Tyr 27, 30, 34, and 36). This study is the first report of the gland-specific sulfation of a salivary phosphopeptide in vivo.

  18. The corrosion and biological behaviour of titanium alloys in the presence of human lymphoid cells and MC3T3-E1 osteoblasts

    Energy Technology Data Exchange (ETDEWEB)

    Zhang Yumei; Zhao Yimin [School of Stomatology, Fourth Military Medical University, Xi' an 710032 (China); Chai Feng; Hildebrand, Hartmut F [Groupe de Recherche sur les Biomateriaux, Faculte de Medecine, F-59045 Lille cedex (France); Hornez, Jean-Christophe [Laboratoire des Materiaux et Procedes (LMP), EA 2443, UVHC, 59600 Maubeuge (France); Li, Chang Liang [Northwest Institute for Nonferrous Metal Research, Xi' an 710016 (China); Traisnel, Michel, E-mail: zhaoym@fmmu.edu.c, E-mail: fhildebrand@univ-lille2.f [Ecole Nationale Superieure de Chimie de Lille, UMR CNRS 8008, 59652 Villeneuve d' Ascq (France)

    2009-02-15

    Corrosion behaviour of biomedical alloys is generally determined in mineral electrolytes: unbuffered NaCl 0.9% (pH 7.4) or artificial saliva (pH 6.8). The assays with exclusive utilization of these electrolytes are of low relevance for the biological condition, to which the alloys will be exposed once implanted in the human organism. As an approach to the biological situation regarding the interaction of proteins, electrolytes and metals, we added the RPMI cell culture medium containing foetal calf serum as a biological electrolyte (pH 7.0). The analysis of corrosion behaviour was also performed in the presence of human lymphoid cells (CEM). The rest potential (E{sub r}) and the global polarization were determined on cp-Ti, micro-arc oxidized cp-Ti (MAO-Ti), four different Ti-alloys (Ti6Al4V, Ti12Zr, Ti(AlMoZr), Ti(NbTaZr)) and 316L stainless steel. The 316L exhibited an appropriate E{sub r} and a good passive current density (I{sub p}), but a high corrosion potential (E{sub c}) and a very low breakdown potential (E{sub b}) in all electrolytes. All Ti-alloys exhibited a much better electrochemical behaviour: better E{sub r} and E{sub c} and very high E{sub b}. No significant differences of the above parameters existed between the Ti-alloys, except for Zr-containing alloys that showed better corrosion behaviour. A remarkable difference, however, was stated with respect to the electrolytes. NaCl 0.9% induced strong variations between the Ti-alloys. More homogeneous results were obtained with artificial saliva and RPMI medium, which induced a favourable E{sub c} and an increased I{sub p}. The presence of cells further decreased these values. The unbuffered NaCl solution seems to be less appropriate for the analysis of corrosion of metals. Additional in vitro biological assessments with CEM cell suspensions and MC3T3-E1 osteoblasts confirmed the advantages of the Ti(AlMoZr) and Ti(NbTaZr) alloys with an improved cell proliferation and vitality rate.

  19. Effect of phosphorothioate modifications on the ability of GTn oligodeoxynucleotides to specifically recognize single-stranded DNA-binding proteins and to affect human cancer cellular growth.

    Science.gov (United States)

    Morassutti, C; Scaggiante, B; Dapas, B; Xodo, L; Tell, G; Quadrifoglio, F

    1999-12-01

    We have previously identified phosphodiester oligonucleotides exclusively made of G and T bases, named GTn, that significantly inhibit human cancer cell growth and recognize specific nuclear single-stranded DNA binding proteins. We wished to examine the ability of the modified GTn oligonucleotides with different degrees of phosphorothioate modifications to bind specifically to the same nuclear proteins recognized by the GTn phosphodiester analogues and their cytotoxic effect on the human T-lymphoblastic CCRF-CEM cell line. We showed that the full phosphorothioate GTn oligonucleotide was neither able to specifically recognize those nuclear proteins, nor cytotoxic. In contrast, the 3'-phosphorothioate-protected GTn oligonucleotides can maintain the specific protein-binding activity. The end-modified phosphorothioate oligonucleotides were also able to elicit the dose-dependent cell growth inhibition effect, but a loss in the cytotoxic ability was observed increasing the extent of sulphur modification of the sequences. Our results indicate that phosphorothioate oligonucleotides directed at specific single-stranded DNA-binding proteins should contain a number of phosphorothioate end-linkages which should be related to the length of the sequence, in order to maintain the same biological activities exerted by their phosphodiester analogues.

  20. [Human influenza].

    Science.gov (United States)

    Stock, Ingo

    2006-10-01

    Human influenza is one of the most common human infectious diseases, contributing to approximately one million deaths every year. In Germany, each year between 5.000 and 20.000 individuals die from severe influenza infections. In several countries, the morbidity and mortality of influenza is greatly underestimated. This is reflected by general low immunization rates. The emergence of avian influenza against the background of the scenario of a human influenza pandemic has revived public interest in the disease. According to the World Health Organisation, it is only the question on the beginning of a new influenza pandemic. The virus type of the new pandemic is still uncertain and it is also unclear, if a pandemic spread of the virus may be prevented by consistent controlling of avian influenza.

  1. Beyond Humanisms

    Directory of Open Access Journals (Sweden)

    Capurro, Rafael

    2012-01-01

    Full Text Available In the first part of this paper a short history of Western humanisms (Socrates, Pico della Mirandola, Descartes, Kant is presented. As far as these humanisms rest on a fixation of the ‘humanum’ they are metaphysical, although they might radically differ from each other. The second part deals with the present debate on trans- and posthumanism in the context of some breath-taking developments in science and technology.Angeletics, a theory of messengers and messages, intends to give an answer to the leading question of this paper, namely: ‘what does it mean to go beyond humanisms?’ The conclusion exposes briefly an ethics of hospitality and care from an angeletic perspective.

  2. 应用羊膜上皮干细胞微环境培养人角膜内皮细胞的研究%Microenvironment of amniotic epithelium cells enhances the proliferation of human corneal endothelial cells

    Institute of Scientific and Technical Information of China (English)

    王忠浩; 陈玮; 宋莉; 沙翔垠; 梁轩伟

    2013-01-01

    Objective To establish an effective method to enhance the proliferation of human corneal endothelial cells (HCECs). Methods The culture conditions of HCEC were optimized by utilizing the totipotent characteristics of human amniotic membrane epithelial stem cells (HAEC) to establish the optimal culture microenvironment of HAEC to promote the proliferation of HCEC. The morphology of HCEC was observed by using phase-contrast microscope and transmission electron microscope. MTT assay and Giemsa staining were performed to detect the proliferation of HCEC. The rate of apoptotic cells was investigated by using Hoechst33342 staining assay. Results Compared to the corneal endothelial cells medium (CEM), the microenvironment containing 20% HAEC-conditioned medium and HAEC-HCEC co-culture microenvironment could promote the proliferation of HCEC and could reduce the apoptosis of HCEC. The cells in HAEC-HCEC microenvironment group could be passaged 4 times without lossing their polygonal appearance. Conclusion The HAEC microenvironment could effectively enhance the proliferation of HCEC, maintain the morphology of HCEC, and inhibit the process of apoptosis of HCEC.%目的:建立一种利用羊膜上皮干细胞(human amniotic membrane epithelial cell,HAEC)微环境培养人角膜内皮细胞(human corneal endothelial cells,HCEC)的方法.方法:制备羊膜上皮干细胞微环境培养HCEC,并探讨诱导HCEC增殖的最佳培养微环境,倒置相差显微镜和透射电镜观察培养过程中细胞的形态学变化,MTT和Giemsa染色观察细胞增殖情况,Hoechst33342检测凋亡细胞比例.结果:在HCEC基本培养液(corneal endothelial cell medium,CEM)的基础上添加20% HAEC上清、HAEC-HCEC的微环境可促进HCEC的增殖,减少凋亡,细胞传代能力显著增强,HAEC-HCEC组传至4代仍保持多角形的内皮细胞形态.结论:羊膜上皮干细胞微环境培养可有效提高HCEE的增殖能力,更好地维持HCEC的形态,并能抑制其凋亡进程.

  3. Think Human

    DEFF Research Database (Denmark)

    Nielsen, Charlotte Marie Bisgaard

    2013-01-01

    years' campaigns suggests that the theory of communication underlying the campaign has its basis in mechanical action rather than in human communication. The practice of 'Communication design' is investigated in relation to this metaphorical 'machine thinking' model of communication and contrasted...

  4. Practicing Humanities

    DEFF Research Database (Denmark)

    Gimmler, Antje

    2016-01-01

    and self-reflective democracy. Contemporary humanities have adopted a new orientation towards practices, and it is not clear how this fits with the ideals of ‘Bildung’ and ‘pure science’. A possible theoretical framework for this orientation towards practices could be found in John Dewey’s pragmatic...

  5. Nothing Human

    Science.gov (United States)

    Wharram, C. C.

    2014-01-01

    In this essay C. C. Wharram argues that Terence's concept of translation as a form of "contamination" anticipates recent developments in philosophy, ecology, and translation studies. Placing these divergent fields of inquiry into dialogue enables us read Terence's well-known statement "I am a human being--I deem nothing…

  6. Human Trafficking

    Science.gov (United States)

    Wilson, David McKay

    2011-01-01

    The shadowy, criminal nature of human trafficking makes evaluating its nature and scope difficult. The U.S. State Department and anti-trafficking groups estimate that worldwide some 27 million people are caught in a form of forced servitude today. Public awareness of modern-day slavery is gaining momentum thanks to new abolitionist efforts. Among…

  7. Human Rights in the Humanities

    Science.gov (United States)

    Harpham, Geoffrey

    2012-01-01

    Human rights are rapidly entering the academic curriculum, with programs appearing all over the country--including at Duke, Harvard, Northeastern, and Stanford Universities; the Massachusetts Institute of Technology; the Universities of Chicago, of Connecticut, of California at Berkeley, and of Minnesota; and Trinity College. Most of these…

  8. Human paleoneurology

    CERN Document Server

    2015-01-01

    The book presents an integrative review of paleoneurology, the study of endocranial morphology in fossil species. The main focus is on showing how computed methods can be used to support advances in evolutionary neuroanatomy, paleoanthropology and archaeology and how they have contributed to creating a completely new perspective in cognitive neuroscience. Moreover, thanks to its multidisciplinary approach, the book addresses students and researchers approaching human paleoneurology from different angles and for different purposes, such as biologists, physicians, anthropologists, archaeologists

  9. Human Cloning

    Science.gov (United States)

    2006-07-20

    genes, for example, has led to new treatments developed by the biotechnology industry for diseases such as diabetes and hemophilia. In the context of...or imposed a moratorium. The legislation was opposed by a number of medical organizations, the biotechnology industry and many scientists and was not...cloning by FDA.36 They find little evidence to support FDA’s position that cloned human embryos are “drugs.” However, the biotechnology industry and the

  10. Digital Humanities

    DEFF Research Database (Denmark)

    Nielsen, Hans Jørn

    2015-01-01

    Artiklen præsenterer først nogle generelle problemstillinger omkring Digital Humanities (DH) med det formål at undersøge dem nærmere i relation til konkrete eksempler på forskellige digitaliseringsmåder og ændringer i dokumentproduktion. I en nærmere afgrænsning vælger artiklen den tendens i DH...

  11. Human universe

    CERN Document Server

    Cox, Brian

    2014-01-01

    Human life is a staggeringly strange thing. On the surface of a ball of rock falling around a nuclear fireball in the blackness of a vacuum the laws of nature conspired to create a naked ape that can look up at the stars and wonder where it came from. What is a human being? Objectively, nothing of consequence. Particles of dust in an infinite arena, present for an instant in eternity. Clumps of atoms in a universe with more galaxies than people. And yet a human being is necessary for the question itself to exist, and the presence of a question in the universe - any question - is the most wonderful thing. Questions require minds, and minds bring meaning. What is meaning? I don't know, except that the universe and every pointless speck inside it means something to me. I am astonished by the existence of a single atom, and find my civilisation to be an outrageous imprint on reality. I don't understand it. Nobody does, but it makes me smile. This book asks questions about our origins, our destiny, and our place i...

  12. درمان دندان‏های دائمی به روش پالپ زنده با استفاده از CEM Cement : مقاله مروری

    Directory of Open Access Journals (Sweden)

    سعید عسگری

    2010-05-01

    Full Text Available مقدمه: برای دندانپزشکان در مواردی که اکسپوز پالپ رخ می دهد، با توجه به عدم تطابق یافته‏های بالینی با رخدادهای هیستوپاتولوژیک، پیش بینی شدت و نوع آسیب پالپی دشوار و حتی غیر ممکن است. در عین حال برای هر کلینیسین، سعی برای زنده نگهداشتن بافت پالپ یک اولویت انکار ناپذیر محسوب می شود. هدف از انجام درمان‏های پالپ زنده (Vital Pulp Therapy; VPT، حفظ حیات پالپ دندان با حذف پوسیدگی‏ها (باکتری‏ها و کاربرد مواد زیست سازگار برای ایجاد سیل مقاوم به ورود مجدد باکتری‏هاست. بنابراین توانایی کلینیسین در حفظ سلامتی بافت پالپ باقیمانده و پوشش مناسب آن در طی انجام VPT بسیار سرنوشت ساز است. در گذشته استفاده از هیدروکسید کلسیم برای انواع درمان‏های VPT بسیار رایج بود ولیکن امروزه این ماده جای خود را به مواد زیست سازگار جدیدی چون MTA و سیمان مخلوط غنی شده کلسیمی یا CEM Cement داده است. سیمان مخلوط غنی شده کلسیمی توانایی سیل کنندگی بسیار خوبی در قیاس با مواد رایج مورد استفاده در درمان VPT داشته و به عنوان یک زیست ماده بازسازی کننده ساخته شدن عاج ترمیمی بیشتر و بهتری را سبب می‏شود. ارزیابی‏های کلینیکی در موارد استفاده از CEM برای انواع درمان‏های VPT شامل پوشش مستقیم پالپ (Direct Pulp Capping و پالپوتومی (Pulpotomy مبین موفقیت‏های چشمگیری

  13. Human Capital, (Human) Capabilities and Higher Education

    Science.gov (United States)

    Le Grange, L.

    2011-01-01

    In this article I initiate a debate into the (de)merits of human capital theory and human capability theory and discuss implications of the debate for higher education. Human capital theory holds that economic growth depends on investment in education and that economic growth is the basis for improving the quality of human life. Human capable…

  14. Human steroidogenesis

    DEFF Research Database (Denmark)

    Andersen, Claus Y; Ezcurra, Diego

    2014-01-01

    steroid concentrations cause alterations in endometrial development, affecting oocyte viability in assisted reproductive technology. Furthermore, it has been proposed that elevated progesterone levels have a negative effect on the reproductive outcome of COS. This may arise from an asynchrony between...... reviews current knowledge of the regulation of progesterone in the human ovary during the follicular phase and highlights areas where knowledge remains limited. In this review, we provide in-depth information outlining the regulation and function of gonadotropins in the complicated area of steroidogenesis...

  15. Humanizing Architecture

    DEFF Research Database (Denmark)

    Toft, Tanya Søndergaard

    2015-01-01

    The article proposes the urban digital gallery as an opportunity to explore the relationship between ‘human’ and ‘technology,’ through the programming of media architecture. It takes a curatorial perspective when proposing an ontological shift from considering media facades as visual spectacles...... agency and a sense of being by way of dematerializing architecture. This is achieved by way of programming the symbolic to provide new emotional realizations and situations of enlightenment in the public audience. This reflects a greater potential to humanize the digital in media architecture....

  16. Differentiation and the multiple drug resistance phenotype in human leukemic cells.

    Science.gov (United States)

    Beck, W T; Cirtain, M C; Ashmun, R A; Mirro, J

    1986-09-01

    A common feature of mammalian cell lines selected for multiple drug resistance is the overexpression of a high-molecular-weight surface membrane glycoprotein(s). While its amount has been shown to be related to the degree of resistance of such cells, its function in this phenomenon remains obscure. Because there are some biochemical and functional similarities between drug-resistant cells and differentiated cells, we asked if resistance-associated glycoproteins were also associated with cellular differentiation. Using three monoclonal antibodies against antigens known to be associated with differentiation and three monoclonal antibodies that distinguish our multiple drug-resistant human leukemic CEM/VLB100 cells from their drug-sensitive counterparts, we found that the resistant cells were neither altered in their apparent state of differentiation nor were they altered in their ability to respond to a differentiation stimulus with the phorbol ester, 12-O-tetradecanoylphorbol-13-acetate. We did find, however, that one antibody that recognizes the resistance-associated glycoprotein, Mr 180,000 glycoprotein (gp180), was only minimally altered in amount bound after treatment with the phorbol ester, but two other resistance-associated glycoproteins, Mr 155,000 glycoprotein (gp155) and, to a lesser extent, Mr 130,000 glycoprotein (gp130), were reduced in expression after this treatment. We suggest that the function of the previously described "marker" glycoprotein associated with multiple drug resistance remains unknown, but that the expression of two other resistance-associated glycoproteins also appears to be related to cellular differentiation or maturation in these cells.

  17. Cytotoxic Oxygenated Steroids from the Soft Coral Nephthea erecta.

    Science.gov (United States)

    Tsai, Tsung-Chang; Huang, Yu-Ting; Chou, Shih-Kai; Shih, Ming-Cheng; Chiang, Ching-Ying; Su, Jui-Hsin

    2016-10-01

    A new 10-demethylated steroid, nephtheasteroid A (1), a new 19-oxygenated steroid, nephtheasteroid B (2) as well as five known steroids 3-7 were isolated from the organic extract of a Taiwanese soft coral Nephthea erecta. The structure was determined by means of IR, MS, and NMR techniques. Among these metabolites, 1 is rarely found in steroids possessing a 19-norergostane skeleton. In vitro cytotoxicity study using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay revealed that compounds 3 and 4 exhibited cytotoxicity against human chronic myelogenous leukemia (K562), human acute lymphoblastic leukemia (Molt-4), human T lymphoblastoid (Sup-T1), and human leukemic monocyte lymphoma (U937), with IC50 of 6.5-14.0 µM.

  18. Calcium-enriched mixture pulpotomy of a human permanent molar with irreversible pulpitis and condensing apical periodontitis

    Directory of Open Access Journals (Sweden)

    Saeed Asgary

    2011-01-01

    Full Text Available This case report describes a pulpotomy treatment of a permanent mature molar tooth with established irreversible pulpitis and condensing apical periodontitis, using calcium-enriched mixture (CEM cement. Clinical examination revealed that the first right lower molar had a large carious lesion with history of spontaneous/lingering pain; radiographic examination showed condensing apical periodontitis. Pulpotomy was opted as the treatment; cervical pulpotomy was carried out. Following hemostasis, the radicular pulp stumps were covered with ~2-mm-thick layer of the prepared CEM cement; the tooth was restored with amalgam. Two-year follow-up showed that the treated tooth had been symptomless, and there were no clinical signs/symptoms of either inflammation or infection. Radiographically, the periradicular lesion was completely healed with reconstruction of bone structures to normal appearance; the root canals were not calcified. According to chemical, physical, and biological properties of the CEM cement, this novel biomaterial may be suitable for endodontic treatment.

  19. Human Toxocariasis

    Directory of Open Access Journals (Sweden)

    Mehmet Burak Selek

    2013-09-01

    Full Text Available Human toxocariasis is an parasitic infection caused by the ingestion of larvae of dog nematode Toxocara canis and less frequently of cat nematode T.cati. Toxocara eggs, shed to environment by infected dogs' and cats' droppings, become infective by embryonation. Humans, particularly children, can be infected by accidentally ingesting embryonated Toxocara eggs. Larvae hatch in the small intestine, penetrate the intestinal wall and migrate to other parts of body via the bloodstream. It is generally a benign, asymptomatic, and self-limiting disease, although migrating larvae can cause damage to tissues and organs, especially brain involvement can cause severe morbidity. The two main clinical presentations of toxocariasis are visceral larva migrans (VLM (a systemic disease caused by larval migration through major organs and ocular larva migrans (OLM (a disease limited to the eyes and optic nerves. There are also two less-severe syndromes which have recently been described, one mainly in children (covert toxocariasis and the other mainly in adults (common toxocariasis. Diagnosis is usually made by clinical signs/symptoms, epidemiological background of the patient and the use of immunological methods (ELISA or western-blot. On the other hand definitive diagnosis is much more challenging, since it requires the demonstration of larvae via biopsy or autopsy. Most cases of toxocariasis clear up without any treatment. VLM is primarily treated with antihelmintic drugs, such as; albendazole or mebendazole. Treatment of OLM is more difficult and usually consists of measures to prevent progressive damage to the eye like steroids. Laser photocoagulation and cryoretinopexy may also be used to treat severe cases. Since eradicating T.canis infection is difficult due to the complexity of its life cycle, prevention of toxocariasis is always preferred. Toxocara eggs have a strong protective layer which makes the eggs able to survive in the environment for months or

  20. Digital Humanities

    DEFF Research Database (Denmark)

    Nielsen, Hans Jørn

    2015-01-01

    Artiklen præsenterer først nogle generelle problemstillinger omkring Digital Humanities (DH) med det formål at undersøge dem nærmere i relation til konkrete eksempler på forskellige digitaliseringsmåder og ændringer i dokumentproduktion. I en nærmere afgrænsning vælger artiklen den tendens i DH...... overgangen fra trykkekultur til digital kultur. For det første problemstillingen omkring digitalisering af litterær kulturarv med fokus på kodning og tagging af teksten samt organisering i hypertekststrukturer. For det andet reorganiseringen af det digitale dokument i dataelementer og database. For det...... tredje konstruktionen af multimodal og multimedial dokumentformidling og "remixing" af dokumenter. Alle tre projekttyper udtrykker momenter i humanioras erkendelse af, at trykkekulturens dokumentstrukturer og vidensorganisering suppleres (eller ligefrem erstattes) af andre former for digital...

  1. Anti-Inflammatory Effects of the Nicotinergic Peptides SLURP-1 and SLURP-2 on Human Intestinal Epithelial Cells and Immunocytes

    Directory of Open Access Journals (Sweden)

    Alex I. Chernyavsky

    2014-01-01

    Full Text Available A search for novel and more efficient therapeutic modalities of inflammatory bowel disease (IBD is one of the most important tasks of contemporary medicine. The anti-inflammatory action of nicotine in IBD might be therapeutic, but its toxicity due to off-target and nonreceptor effects limited its use and prompted a search for nontoxic nicotinergic drugs. We tested the hypothesis that SLURP-1 and -2—the physiological nicotinergic substances produced by the human intestinal epithelial cells (IEC and immunocytes—can mimic the anti-inflammatory effects of nicotine. We used human CCL-241 enterocytes, CCL-248 colonocytes, CCRF-CEM T-cells, and U937 macrophages. SLURP-1 diminished the TLR9-dependent secretion of IL-8 by CCL-241, and IFNγ-induced upregulation of ICAM-1 in both IEC types. rSLURP-2 inhibited IL-1β-induced secretion of IL-6 and TLR4- and TLR9-dependent induction of CXCL10 and IL-8, respectively, in CCL-241. rSLURP-1 decreased production of TNFα by T-cells, downregulated IL-1β and IL-6 secretion by macrophages, and moderately upregulated IL-10 production by both types of immunocytes. SLURP-2 downregulated TNFα and IFNγR in T-cells and reduced IL-6 production by macrophages. Combining both SLURPs amplified their anti-inflammatory effects. Learning the pharmacology of SLURP-1 and -2 actions on enterocytes, colonocytes, T cells, and macrophages may help develop novel effective treatments of IBD.

  2. NATO Human View Architecture and Human Networks

    Science.gov (United States)

    Handley, Holly A. H.; Houston, Nancy P.

    2010-01-01

    The NATO Human View is a system architectural viewpoint that focuses on the human as part of a system. Its purpose is to capture the human requirements and to inform on how the human impacts the system design. The viewpoint contains seven static models that include different aspects of the human element, such as roles, tasks, constraints, training and metrics. It also includes a Human Dynamics component to perform simulations of the human system under design. One of the static models, termed Human Networks, focuses on the human-to-human communication patterns that occur as a result of ad hoc or deliberate team formation, especially teams distributed across space and time. Parameters of human teams that effect system performance can be captured in this model. Human centered aspects of networks, such as differences in operational tempo (sense of urgency), priorities (common goal), and team history (knowledge of the other team members), can be incorporated. The information captured in the Human Network static model can then be included in the Human Dynamics component so that the impact of distributed teams is represented in the simulation. As the NATO militaries transform to a more networked force, the Human View architecture is an important tool that can be used to make recommendations on the proper mix of technological innovations and human interactions.

  3. Human Development Report 1991: Financing Human Development

    OpenAIRE

    United Nations Development Programme, UNDP

    1991-01-01

    Lack of political commitment rather than financial resources is often the real barrier to human development. This is the main conclusion of Human Development Report 1991 - the second in a series of annual reports on the subject.

  4. Human-machine interactions

    Science.gov (United States)

    Forsythe, J. Chris; Xavier, Patrick G.; Abbott, Robert G.; Brannon, Nathan G.; Bernard, Michael L.; Speed, Ann E.

    2009-04-28

    Digital technology utilizing a cognitive model based on human naturalistic decision-making processes, including pattern recognition and episodic memory, can reduce the dependency of human-machine interactions on the abilities of a human user and can enable a machine to more closely emulate human-like responses. Such a cognitive model can enable digital technology to use cognitive capacities fundamental to human-like communication and cooperation to interact with humans.

  5. Analysis of recombinant human growth hormone by capillary electrophoresis with bilayer-coated capillaries using UV and MS detection.

    Science.gov (United States)

    Catai, Jonatan R; Sastre Toraño, Javier; Jongen, Peter M J M; de Jong, Gerhardus J; Somsen, Govert W

    2007-06-01

    The characterization of recombinant human growth hormone (rhGH; somatropin) by capillary electrophoresis (CE) with UV-absorbance and mass spectrometric (MS) detection using capillaries noncovalently coated with polybrene (PB) and poly(vinyl sulfonic acid) (PVS) is demonstrated. Compared with bare fused-silica capillaries, PB-PVS coated capillaries yielded more favorable migration-time reproducibilities and higher separation efficiencies. Optimal separation conditions for the bilayer-coated capillaries comprised a background electrolyte (BGE) of 400 mM Tris phosphate (pH 8.5) yielding migration-time R.S.D.s of less than 1.0% and plate numbers above 300,000 for intact rhGH. The protein was also analyzed using the CE method described in the European Pharmacopoeia (Ph. Eur.) monograph. The pharmacopoeial method gave much longer analysis times (22 min versus 8 min), lower resolution and plate numbers, and consecutive shifts in migration time for rhGH, indicating possible interactions between the protein and the inner capillary wall. Due to stable migration times obtained with the coated capillaries, reliable profiling and quantification of rhGH and its byproducts in time was possible. Analysis of thermally degraded rhGH revealed the formation of two main degradation products. CE-mass spectrometry (MS) of this sample, using a PB-PVS coated capillary and a BGE of 75 mM ammonium formate (pH 8.5), suggests that these products are desamido forms of rhGH. Analyses of expired rhGH preparations with CE-UV and CE-MS indicated the presence of both deamidation and oxidation products.

  6. Expression profile and differential regulation of the Human I-mfa domain-Containing protein (HIC) gene in immune cells.

    Science.gov (United States)

    Gu, Lili; Dean, Jonathan; Oliveira, André L A; Sheehy, Noreen; Hall, William W; Gautier, Virginie W

    2009-04-27

    The Human I-mfa domain-Containing protein, HIC, is a 246 amino acid protein that functions as a transcriptional regulator. Although the precise function of HIC remains to be clarified, the association of the HIC gene locus with myeloid neoplasms, its interactions with lymphotropic viruses such as EBV, HIV-1 and HTLV-1 and its expression in immune tissues suggest that HIC might have a modulatory role in immune cells. To further characterise the HIC functional relationship with the immune system, we sought to analyse the HIC gene expression profile in immune cells and to determine if immunomodulatory cytokines, such as interleukin (IL)-2, could regulate the expression of HIC mRNA. Relative quantitative real-time RT-PCR revealed that HIC mRNA is highly expressed in PBMCs and in various hematopoietic cell lines. The immunomodulatory cytokine IL-2 up-regulated HIC gene expression in PBMCs, CEM, MT-2 and U937 but markedly reduced HIC gene expression in Raji. Addition of cycloheximide indicated that the IL-2 effects were independent of de novo protein synthesis and that the HIC gene is a direct target of IL-2. Two cell lines (Jurkat and BJAB) displayed a distinct loss in HIC gene expression. However, when these cell lines were subjected to a combination of DNA methyltransferase and histone-deacetylase inhibitors, (5-aza-2-deoxycytidine and trichostatin A, respectively), HIC expression was de-repressed, indicating possible epigenetic control of HIC expression. Overall, our study describes that the immune expression of HIC is cell-specific, dynamic, and identifies the HIC gene as an IL-2 responsive gene. Furthermore, our de-repression studies support the hypothesis that HIC might represent a candidate tumor suppressor gene. Overall, this report provides new insights for a putative role of HIC in the modulation of immune and inflammatory responses and/or hematological malignancies.

  7. The human I-mfa domain-containing protein, HIC, interacts with cyclin T1 and modulates P-TEFb-dependent transcription.

    Science.gov (United States)

    Young, Tara M; Wang, Qi; Pe'ery, Tsafi; Mathews, Michael B

    2003-09-01

    Positive transcription elongation factor b (P-TEFb) hyperphosphorylates the carboxy-terminal domain of RNA polymerase II, permitting productive transcriptional elongation. The cyclin T1 subunit of P-TEFb engages cellular transcription factors as well as the human immunodeficiency virus type 1 (HIV-1) transactivator Tat. To identify potential P-TEFb regulators, we conducted a yeast two-hybrid screen with cyclin T1 as bait. Among the proteins isolated was the human I-mfa domain-containing protein (HIC). HIC has been reported to modulate expression from both cellular and viral promoters via its C-terminal cysteine-rich domain, which is similar to the inhibitor of MyoD family a (I-mfa) protein. We show that HIC binds cyclin T1 in yeast and mammalian cells and that it interacts with intact P-TEFb in mammalian cell extracts. The interaction involves the I-mfa domain of HIC and the regulatory histidine-rich region of cyclin T1. HIC also binds Tat via its I-mfa domain, although the sequence requirements are different. HIC colocalizes with cyclin T1 in nuclear speckle regions and with Tat in the nucleolus. Expression of the HIC cDNA modulates Tat transactivation of the HIV-1 long terminal repeat (LTR) in a cell type-specific fashion. It is mildly inhibitory in CEM cells but stimulates gene expression in HeLa, COS, and NIH 3T3 cells. The isolated I-mfa domain acts as a dominant negative inhibitor. Activation of the HIV-1 LTR by HIC in NIH 3T3 cells occurs at the RNA level and is mediated by direct interactions with P-TEFb.

  8. Full-length CD4 electroinserted in the erythrocyte membrane as a long-lived inhibitor of infection by human immunodeficiency virus

    Energy Technology Data Exchange (ETDEWEB)

    Zeira, M.; Volsky, D.J. (Columbia Univ., New York, NY (United States)); Tosi, P.F.; Mouneimne, Y.; Lazarte, J.; Sneed, L.; Nicolau, C. (Texas A and M Univ., College Station (United States))

    1991-05-15

    Recombinant full-length CD4 expressed in Spodoptera frugiperda 9 cells with the baculovirus system was electroinserted in erythrocyte (RBC) membranes. Of the inserted CD4, 70% was correctly oriented as shown by fluorescence quenching experiments with fluorescein-labeled CD4. The inserted CD4 displayed the same epitopes as the naturally occurring CD4 in human T4 cells. Double-labeling experiments ({sup 125}I-CD4 and {sup 51}Cr-RBC) showed that the half-life of CD4 electroinserted in RBC membrane in rabbits was approximately 7 days. Using the fluorescence dequenching technique with octadecylrhodamine B-labeled human immunodeficiency virus (HIV)-1, the authors showed fusion of the HIV envelope with the plasma membrane of RBC-CD4, whereas no such fusion could be detected with RBC. The dequenching efficiency of RBC-CD4 is the same as that of CEM cells. Exposure to anti-CD4 monoclonal antibody OKT4A, which binds to the CD4 region that attaches to envelope glycoprotein gp120, caused a significant decrease in the dequenching of fluorescence. In vitro infectivity studies showed that preincubation of HIV-1 with RBC-CD4 reduced by 80-90% the appearance of HIV antigens in target cells, the amount of viral reverse transcriptase, and the amount of p24 core antigen produced by the target cells. RBC-CD4, but not RBCs, aggregated with chronically HIV-1-infected T cells and caused formation of giant cells. These data show that the RBC-CD4 reagent is relatively long lived in circulation and efficient in attaching to HIV-1 and HIV-infected cells, and thus it may have value as a therapeutic agent against AIDS.

  9. Special Section: Human Rights

    Science.gov (United States)

    Frydenlund, Knut; And Others

    1978-01-01

    Eleven articles examine human rights in Europe. Topics include unemployment, human rights legislation, role of the Council of Europe in promoting human rights, labor unions, migrant workers, human dignity in industralized societies, and international violence. Journal available from Council of Europe, Directorate of Press and Information, 67006…

  10. Visualizing Humans by Computer.

    Science.gov (United States)

    Magnenat-Thalmann, Nadia

    1992-01-01

    Presents an overview of the problems and techniques involved in visualizing humans in a three-dimensional scene. Topics discussed include human shape modeling, including shape creation and deformation; human motion control, including facial animation and interaction with synthetic actors; and human rendering and clothing, including textures and…

  11. From Human Past to Human Future

    OpenAIRE

    Robert G. Bednarik

    2013-01-01

    This paper begins with a refutation of the orthodox model of final Pleistocene human evolution, presenting an alternative, better supported account of this crucial phase. According to this version, the transition from robust to gracile humans during that period is attributable to selective breeding rather than natural selection, rendered possible by the exponential rise of culturally guided volitional choices. The rapid human neotenization coincides with the development of numerous somatic an...

  12. ISS Payload Human Factors

    Science.gov (United States)

    Ellenberger, Richard; Duvall, Laura; Dory, Jonathan

    2016-01-01

    The ISS Payload Human Factors Implementation Team (HFIT) is the Payload Developer's resource for Human Factors. HFIT is the interface between Payload Developers and ISS Payload Human Factors requirements in SSP 57000. ? HFIT provides recommendations on how to meet the Human Factors requirements and guidelines early in the design process. HFIT coordinates with the Payload Developer and Astronaut Office to find low cost solutions to Human Factors challenges for hardware operability issues.

  13. Has Human Evolution Stopped?

    OpenAIRE

    TEMPLETON, Alan R

    2010-01-01

    It has been argued that human evolution has stopped because humans now adapt to their environment via cultural evolution and not biological evolution. However, all organisms adapt to their environment, and humans are no exception. Culture defines much of the human environment, so cultural evolution has actually led to adaptive evolution in humans. Examples are given to illustrate the rapid pace of adaptive evolution in response to cultural innovations. These adaptive responses have important ...

  14. Preference for human eyes in human infants.

    Science.gov (United States)

    Dupierrix, Eve; de Boisferon, Anne Hillairet; Méary, David; Lee, Kang; Quinn, Paul C; Di Giorgio, Elisa; Simion, Francesca; Tomonaga, Masaki; Pascalis, Olivier

    2014-07-01

    Despite evidence supporting an early attraction to human faces, the nature of the face representation in neonates and its development during the first year after birth remain poorly understood. One suggestion is that an early preference for human faces reflects an attraction toward human eyes because human eyes are distinctive compared with other animals. In accord with this proposal, prior empirical studies have demonstrated the importance of the eye region in face processing in adults and infants. However, an attraction for the human eye has never been shown directly in infants. The current study aimed to investigate whether an attraction for human eyes would be present in newborns and older infants. With the use of a preferential looking time paradigm, newborns and 3-, 6-, 9-, and 12-month-olds were simultaneously presented with a pair of nonhuman primate faces (chimpanzees and Barbary macaques) that differed only by the eyes, thereby pairing a face with original nonhuman primate eyes with the same face in which the eyes were replaced by human eyes. Our results revealed that no preference was observed in newborns, but a preference for nonhuman primate faces with human eyes emerged from 3months of age and remained stable thereafter. The findings are discussed in terms of how a preference for human eyes may emerge during the first few months after birth.

  15. Economics of human trafficking.

    Science.gov (United States)

    Wheaton, Elizabeth M; Schauer, Edward J; Galli, Thomas V

    2010-01-01

    Because freedom of choice and economic gain are at the heart of productivity, human trafficking impedes national and international economic growth. Within the next 10 years, crime experts expect human trafficking to surpass drug and arms trafficking in its incidence, cost to human well-being, and profitability to criminals (Schauer and Wheaton, 2006: 164-165). The loss of agency from human trafficking as well as from modern slavery is the result of human vulnerability (Bales, 2000: 15). As people become vulnerable to exploitation and businesses continually seek the lowest-cost labour sources, trafficking human beings generates profit and a market for human trafficking is created. This paper presents an economic model of human trafficking that encompasses all known economic factors that affect human trafficking both across and within national borders. We envision human trafficking as a monopolistically competitive industry in which traffickers act as intermediaries between vulnerable individuals and employers by supplying differentiated products to employers. In the human trafficking market, the consumers are employers of trafficked labour and the products are human beings. Using a rational-choice framework of human trafficking we explain the social situations that shape relocation and working decisions of vulnerable populations leading to human trafficking, the impetus for being a trafficker, and the decisions by employers of trafficked individuals. The goal of this paper is to provide a common ground upon which policymakers and researchers can collaborate to decrease the incidence of trafficking in humans.

  16. Human bites (image)

    Science.gov (United States)

    Human bites present a high risk of infection. Besides the bacteria which can cause infection, there is ... the wound extends below the skin. Anytime a human bite has broken the skin, seek medical attention.

  17. Human Use Index (Future)

    Data.gov (United States)

    U.S. Environmental Protection Agency — Human land uses may have major impacts on ecosystems, affecting biodiversity, habitat, air and water quality. The human use index (also known as U-index) is the...

  18. The Growing Human Population.

    Science.gov (United States)

    Keyfitz, Nathan

    1989-01-01

    Discusses the issue of human population. Illustrates the projections of the growing human population in terms of developed and less developed countries. Describes the family planning programs in several countries. Lists three references for further reading. (YP)

  19. Human Services Offices

    Data.gov (United States)

    Fairfax County, Virginia — This data contains point features representing the human services offices within Fairfax County.“HS_Region” is the office for each human services region, “DFS_Area”...

  20. Human assisted robotic exploration

    Science.gov (United States)

    Files, B. T.; Canady, J.; Warnell, G.; Stump, E.; Nothwang, W. D.; Marathe, A. R.

    2016-05-01

    In support of achieving better performance on autonomous mapping and exploration tasks by incorporating human input, we seek here to first characterize humans' ability to recognize locations from limited visual information. Such a characterization is critical to the design of a human-in-the-loop system faced with deciding whether and when human input is useful. In this work, we develop a novel and practical place-recognition task that presents humans with video clips captured by a navigating ground robot. Using this task, we find experimentally that human performance does not seem to depend on factors such as clip length or familiarity with the scene and also that there is significant variability across subjects. Moreover, we find that humans significantly outperform a state-of-the-art computational solution to this problem, suggesting the utility of incorporating human input in autonomous mapping and exploration techniques.

  1. Human Resource Accounting System

    Science.gov (United States)

    Cerullo, Michael J.

    1974-01-01

    Main objectives of human resource accounting systems are to satisfy the informational demands made by investors and by operating managers. The paper's main concern is with the internal uses of a human asset system. (Author)

  2. Telling the Human Story.

    Science.gov (United States)

    Richardson, Miles

    1987-01-01

    Proposes that one of the fundamental human attributes is telling stories. Explores the debate on whether Neanderthals possessed language ability. Discusses the role of the "human story" in teaching anthropology. (DH)

  3. Statement on Human Cloning

    Science.gov (United States)

    ... for the Advancement of Science Statement on Human Cloning Tweet The American Association for the Advancement of ... for this statement on human cloning. Ban Reproductive Cloning AAAS endorses a legally enforceable ban on efforts ...

  4. Human Use Index

    Data.gov (United States)

    U.S. Environmental Protection Agency — Human land uses may have major impacts on ecosystems, affecting biodiversity, habitat, air and water quality. The human use index (also known as U-index) is the...

  5. Skin and the non-human human

    DEFF Research Database (Denmark)

    Rösing, Lilian Munk

    2013-01-01

    The article puts forward an aesthetic and psychoanalytic analysis of Titian's painting, The Flaying of Marsyas, arguing that the painting is a reflection on the human subject as a being constituted by skin and by a core of non-humanity. The analysis is partly an answer to Melanie Hart's (2007......) article 'Visualizing the mind: Looking at Titian's Flaying of Marsyas', addressing features of the painting not commented on by Hart, and supplementing Hart's (Kleinian) theoretical frame by involving Didier Anzieu's 'skin ego', Slavoj Zizek's concept of the 'non-human', Giorgio Agamben's term...

  6. Human productivity program definition

    Science.gov (United States)

    Cramer, D. B.

    1985-01-01

    The optimization of human productivity on the space station within the existing resources and operational constraints is the aim of the Human Productivity Program. The conceptual objectives of the program are as follows: (1) to identify long lead technology; (2) to identify responsibility for work elements; (3) to coordinate the development of crew facilities and activities; and (4) to lay the foundation for a cost effective approach to improving human productivity. Human productivity work elements are also described and examples are presented.

  7. Has Human Evolution Stopped?

    Directory of Open Access Journals (Sweden)

    Alan R. Templeton

    2010-07-01

    Full Text Available It has been argued that human evolution has stopped because humans now adapt to their environment via cultural evolution and not biological evolution. However, all organisms adapt to their environment, and humans are no exception. Culture defines much of the human environment, so cultural evolution has actually led to adaptive evolution in humans. Examples are given to illustrate the rapid pace of adaptive evolution in response to cultural innovations. These adaptive responses have important implications for infectious diseases, Mendelian genetic diseases, and systemic diseases in current human populations. Moreover, evolution proceeds by mechanisms other than natural selection. The recent growth in human population size has greatly increased the reservoir of mutational variants in the human gene pool, thereby enhancing the potential for human evolution. The increase in human population size coupled with our increased capacity to move across the globe has induced a rapid and ongoing evolutionary shift in how genetic variation is distributed within and among local human populations. In particular, genetic differences between human populations are rapidly diminishing and individual heterozygosity is increasing, with beneficial health effects. Finally, even when cultural evolution eliminates selection on a trait, the trait can still evolve due to natural selection on other traits. Our traits are not isolated, independent units, but rather are integrated into a functional whole, so selection on one trait can cause evolution to occur on another trait, sometimes with mildly maladaptive consequences.

  8. Has human evolution stopped?

    Science.gov (United States)

    Templeton, Alan R

    2010-07-01

    It has been argued that human evolution has stopped because humans now adapt to their environment via cultural evolution and not biological evolution. However, all organisms adapt to their environment, and humans are no exception. Culture defines much of the human environment, so cultural evolution has actually led to adaptive evolution in humans. Examples are given to illustrate the rapid pace of adaptive evolution in response to cultural innovations. These adaptive responses have important implications for infectious diseases, Mendelian genetic diseases, and systemic diseases in current human populations. Moreover, evolution proceeds by mechanisms other than natural selection. The recent growth in human population size has greatly increased the reservoir of mutational variants in the human gene pool, thereby enhancing the potential for human evolution. The increase in human population size coupled with our increased capacity to move across the globe has induced a rapid and ongoing evolutionary shift in how genetic variation is distributed within and among local human populations. In particular, genetic differences between human populations are rapidly diminishing and individual heterozygosity is increasing, with beneficial health effects. Finally, even when cultural evolution eliminates selection on a trait, the trait can still evolve due to natural selection on other traits. Our traits are not isolated, independent units, but rather are integrated into a functional whole, so selection on one trait can cause evolution to occur on another trait, sometimes with mildly maladaptive consequences.

  9. Human Document Project

    NARCIS (Netherlands)

    Vries, de J.; Abelmann, L.; Manz, A.; Elwenspoek, M.C.

    2012-01-01

    “The Human Document Project” is a project which tries to answer all of the questions related to preserving information about the human race for tens of generations of humans to come or maybe even for a future intelligence which can emerge in the coming thousands of years. This document mainly focuss

  10. Human nature and enhancement.

    Science.gov (United States)

    Buchanan, Allen

    2009-03-01

    Appeals to the idea of human nature are frequent in the voluminous literature on the ethics of enhancing human beings through biotechnology. Two chief concerns about the impact of enhancements on human nature have been voiced. The first is that enhancement may alter or destroy human nature. The second is that if enhancement alters or destroys human nature, this will undercut our ability to ascertain the good because, for us, the good is determined by our nature. The first concern assumes that altering or destroying human nature is in itself a bad thing. The second concern assumes that human nature provides a standard without which we cannot make coherent, defensible judgments about what is good. I will argue (1) that there is nothing wrong, per se, with altering or destroying human nature, because, on a plausible understanding of what human nature is, it contains bad as well as good characteristics and there is no reason to believe that eliminating some of the bad would so imperil the good as to make the elimination of the bad impermissible, and (2) that altering or destroying human nature need not result in the loss of our ability to make judgments about the good, because we possess a conception of the good by which we can and do evaluate human nature. I will argue that appeals to human nature tend to obscure rather than illuminate the debate over the ethics of enhancement and can be eliminated in favor of more cogent considerations.

  11. From Human Past to Human Future

    Directory of Open Access Journals (Sweden)

    Robert G. Bednarik

    2013-01-01

    Full Text Available This paper begins with a refutation of the orthodox model of final Pleistocene human evolution, presenting an alternative, better supported account of this crucial phase. According to this version, the transition from robust to gracile humans during that period is attributable to selective breeding rather than natural selection, rendered possible by the exponential rise of culturally guided volitional choices. The rapid human neotenization coincides with the development of numerous somatic and neural detriments and pathologies. Uniformitarian reasoning based on ontogenic homology suggests that the cognitive abilities of hominins are consistently underrated in the unstable orthodoxies of Pleistocene archaeology. A scientifically guided review establishes developmental trajectories defining recent changes in the human genome and its expressions, which then form the basis of attempts to extrapolate from them into the future. It is suggested that continuing and perhaps accelerating unfavorable genetic changes to the human species, rather than existential threats such as massive disasters, pandemics, or astrophysical events, may become the ultimate peril of humanity.

  12. Jordan Adjusted Human Development

    OpenAIRE

    Ababsa, Myriam

    2014-01-01

    Jordan Human Development Index (HDI) and Adjusted Human Development Index (IHDI) In 1990, the United Nations Development Programme designed a Human Development Index composed of life expectancy at birth, level of education and gross domestic product (GDP) per capita. In 2011, the UNDP ranked Jordan 95th out of 187 countries with a human development index of 0.698, up from 0.591 in 1990, making it the leading medium-range country for human development (fig. VIII.1). In 2010, the inequality adj...

  13. Human Beings And Water

    OpenAIRE

    2016-01-01

    The writer of this paper on this writing is talking about the human beings and water. Water is one of the very fundamentally things that human beings need to keep their lives. Human beings sometimes do not realise that the water is very important for them because they actually cannot live their lives without the present of water. Human beings can keep their lives without rice, but cannot without water. For instances the use of water for human beings are domestic use, cooking, washing, bathing...

  14. Human Milk Banking.

    Science.gov (United States)

    Haiden, Nadja; Ziegler, Ekhard E

    2016-01-01

    Human milk banks play an essential role by providing human milk to infants who would otherwise not be able to receive human milk. The largest group of recipients are premature infants who derive very substantial benefits from it. Human milk protects premature infants from necrotizing enterocolitis and from sepsis, two devastating medical conditions. Milk banks collect, screen, store, process, and distribute human milk. Donating women usually nurse their own infants and have a milk supply that exceeds their own infants' needs. Donor women are carefully selected and are screened for HIV-1, HIV-2, human T-cell leukemia virus 1 and 2, hepatitis B, hepatitis C, and syphilis. In the milk bank, handling, storing, processing, pooling, and bacterial screening follow standardized algorithms. Heat treatment of human milk diminishes anti-infective properties, cellular components, growth factors, and nutrients. However, the beneficial effects of donor milk remain significant and donor milk is still highly preferable in comparison to formula.

  15. Capillary electrophoresis-time of flight-mass spectrometry using noncovalently bilayer-coated capillaries for the analysis of amino acids in human urine.

    Science.gov (United States)

    Ramautar, Rawi; Mayboroda, Oleg A; Derks, Rico J E; van Nieuwkoop, Cees; van Dissel, Jaap T; Somsen, Govert W; Deelder, André M; de Jong, Gerhardus J

    2008-06-01

    A capillary electrophoresis-time of flight-mass spectrometry (CE-TOF-MS) method for the analysis of amino acids in human urine was developed. Capillaries noncovalently coated with a bilayer of Polybrene (PB) and poly(vinyl sulfonate) (PVS) provided a considerable EOF at low pH, thus facilitating the fast separation of amino acids using a BGE of 1 M formic acid (pH 1.8). The PB-PVS coating proved to be very consistent yielding stable CE-MS patterns of amino acids in urine with favorable migration time repeatability (RSDs capillary preconcentration step based on pH-mediated stacking allowing 100-nL sample injection (i.e. ca. 4% of capillary volume). As a result, LODs for amino acids were down to 20 nM while achieving satisfactory separation efficiencies. Preliminary validation of the method with urine samples showed good linear responses for the amino acids (R(2) >0.99), and RSDs for peak areas were <10%. Special attention was paid to the influence of matrix effects on the quantification of amino acids. The magnitude of ion suppression by the matrix was similar for different urine samples. The CE-TOF-MS method was used for the analysis of urine samples of patients with urinary tract infection (UTI). Concentrations of a subset of amino acids were determined and compared with concentrations in urine of healthy controls. Furthermore, partial least squares-discriminant analysis (PLS-DA) of the CE-TOF-MS dataset in the 50-450 m/z region showed a distinctive grouping of the UTI samples and the control samples. Examination of score and loadings plot revealed a number of compounds, including phenylalanine, to be responsible for grouping of the samples. Thus, the CE-TOF-MS method shows good potential for the screening of body fluids based on the analysis of endogenous low-molecular weight metabolites such as amino acids and related compounds.

  16. Human Capital and Sustainability

    Directory of Open Access Journals (Sweden)

    Garry Jacobs

    2011-01-01

    Full Text Available A study of sustainability needs to consider the role of all forms of capital—natural, biological, social, technological, financial, cultural—and the complex ways in which they interact. All forms of capital derive their value, utility and application from human mental awareness, creativity and social innovation. This makes human capital, including social capital, the central determinant of resource productivity and sustainability. Humanity has entered the Anthropocene Epoch in which human changes have become the predominant factor in evolution. Humanity is itself evolving from animal physicality to social vitality to mental individuality. This transition has profound bearing on human productive capabilities, adaptability, creativity and values, the organization of economy, public policy, social awareness and life styles that determine sustainability. This article examines the linkages between population, economic development, employment, education, health, social equity, cultural values, energy intensity and sustainability in the context of evolving human consciousness. It concludes that development of human capital is the critical determinant of long-term sustainability and that efforts to accelerate the evolution of human consciousness and emergence of mentally self-conscious individuals will be the most effective approach for ensuring a sustainable future. Education is the primary lever. Human choice matters.

  17. Integrated Environmental Modelling: human decisions, human challenges

    Science.gov (United States)

    Glynn, Pierre D.

    2015-01-01

    Integrated Environmental Modelling (IEM) is an invaluable tool for understanding the complex, dynamic ecosystems that house our natural resources and control our environments. Human behaviour affects the ways in which the science of IEM is assembled and used for meaningful societal applications. In particular, human biases and heuristics reflect adaptation and experiential learning to issues with frequent, sharply distinguished, feedbacks. Unfortunately, human behaviour is not adapted to the more diffusely experienced problems that IEM typically seeks to address. Twelve biases are identified that affect IEM (and science in general). These biases are supported by personal observations and by the findings of behavioural scientists. A process for critical analysis is proposed that addresses some human challenges of IEM and solicits explicit description of (1) represented processes and information, (2) unrepresented processes and information, and (3) accounting for, and cognizance of, potential human biases. Several other suggestions are also made that generally complement maintaining attitudes of watchful humility, open-mindedness, honesty and transparent accountability. These suggestions include (1) creating a new area of study in the behavioural biogeosciences, (2) using structured processes for engaging the modelling and stakeholder communities in IEM, and (3) using ‘red teams’ to increase resilience of IEM constructs and use.

  18. Human organ markets and inherent human dignity.

    Science.gov (United States)

    MacKellar, Calum

    2014-01-01

    It has been suggested that human organs should be bought and sold on a regulated market as any other material property belongingto an individual. This would have the advantage of both addressing the grave shortage of organs available for transplantation and respecting the freedom of individuals to choose to do whatever they want with their body parts. The old arguments against such a market in human organs are, therefore, being brought back into question. The article examines the different arguments both in favour and against the sale of human organs. It concludes that the body and any of its elements is a full expression of the whole person. As such, they cannot have a price if the individual is to retain his or her full inherent dignity and if society is to retain and protect this very important concept.

  19. Developing human technology curriculum

    Directory of Open Access Journals (Sweden)

    Teija Vainio

    2012-10-01

    Full Text Available During the past ten years expertise in human-computer interaction has shifted from humans interacting with desktop computers to individual human beings or groups of human beings interacting with embedded or mobile technology. Thus, humans are not only interacting with computers but with technology. Obviously, this shift should be reflected in how we educate human-technology interaction (HTI experts today and in the future. We tackle this educational challenge first by analysing current Master’s-level education in collaboration with two universities and second, discussing postgraduate education in the international context. As a result, we identified core studies that should be included in the HTI curriculum. Furthermore, we discuss some practical challenges and new directions for international HTI education.

  20. Chimeras and human dignity.

    Science.gov (United States)

    de Melo-Martín, Inmaculada

    2008-12-01

    Discussions about whether new biomedical technologies threaten or violate human dignity are now common. Indeed, appeals to human dignity have played a central role in national and international debates about whether to allow particular kinds of biomedical investigations. The focus of this paper is on chimera research. I argue here that both those who claim that particular types of human-nonhuman chimera research threaten human dignity and those who argue that such threat does not exist fail to make their case. I first introduce some of the arguments that have been offered supporting the claim that the creation of certain sorts of chimeras threatens or violates human dignity. I next present opponents' assessments of such arguments. Finally I critically analyze both the critics' and the supporters' claims about whether chimera research threatens human dignity.

  1. Humanities, Digital Humanities, Media studies, Internet studies

    DEFF Research Database (Denmark)

    Brügger, Niels

    the interplay between four areas which until now to a certain extent have been separated: Traditional Hu- manities, Digital Humanities, Media studies, and Internet studies. The vision is followed by an outline of how it can be unfolded in concrete activities, in the form of research projects, research......Todays expanding digital landscape constitutes an important research object as well as the research environment for the Humanities at the beginning of the 21st century. Taking this state of affairs as a starting point this inaugural lecture presents a vision for how the digital affects...

  2. Modern Human Capital Management

    OpenAIRE

    Feldberger, Madita

    2008-01-01

    Title: Modern Human Capital Management Seminar date: 30th of May 2008 Course: Master thesis in Business Administration, 15 ECTS Authors: Madita Feldberger Supervisor: Lars Svensson Keywords: Human capital, SWOT Analysis, Strategic Map, Balanced Scorecard Research Problem: Despite of the success of Human Capital Management (HCM) in research it did not arrive yet in the HR departments of many companies. Numerous firms even have problems to set their strategic goals with focus on HR. The HR Bala...

  3. Advancing Human Rights

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The National Human Rights Action Plan of China (2012-2015) was initiated after the successful conclusion of the National Human Rights Action Plan of China (2009-2010).The Chinese government in late July published an assessment report on the implementation of the plan,elaborating on the full implementation of China's first-ever national program on human rights development,which was drafted in April 2009.

  4. The psychology of humanness.

    Science.gov (United States)

    Haslam, Nick; Loughnan, Steve; Holland, Elise

    2013-01-01

    This chapter explores the ways in which the concept of "humanness" illuminates a wide and fascinating variety of psychological phenomena. After introducing the concept--everyday understandings of what it is to be human--we present a model of the diverse ways in which humanness can be denied to people. According to this model people may be perceived as lacking uniquely human characteristics, and thus likened to animals, or as lacking human nature, and thus likened to inanimate objects. Both of these forms of dehumanization occur with varying degrees of subtlety, from the explicit uses of derogatory animal metaphors, to stereotypes that ascribe lesser humanness or simpler minds to particular groups, to nonconscious associations between certain humans and nonhumans. After reviewing research on dehumanization through the lens of our model we examine additional topics that the psychology of humanness clarifies, notably the perception of nonhuman animals and the objectification of women. Humanness emerges as a concept that runs an integrating thread through a variety of research literatures.

  5. Refractoriness in human atria

    DEFF Research Database (Denmark)

    Skibsbye, Lasse; Jespersen, Thomas; Christ, Torsten

    2016-01-01

    drugs. Cardiomyocyte excitability depends on availability of sodium channels, which involves both time- and voltage-dependent recovery from inactivation. This study therefore aims to characterise how sodium channel inactivation affects refractoriness in human atria. METHODS AND RESULTS: Steady......-state activation and inactivation parameters of sodium channels measured in vitro in isolated human atrial cardiomyocytes were used to parameterise a mathematical human atrial cell model. Action potential data were acquired from human atrial trabeculae of patients in either sinus rhythm or chronic atrial...... in pharmacological management of chronic atrial fibrillation....

  6. Human Performance Research Center

    Data.gov (United States)

    Federal Laboratory Consortium — Biochemistry:Improvements in energy metabolism, muscular strength and endurance capacity have a basis in biochemical and molecular adaptations within the human body....

  7. Robotics for Human Exploration

    Science.gov (United States)

    Fong, Terrence; Deans, Mathew; Bualat, Maria

    2013-01-01

    Robots can do a variety of work to increase the productivity of human explorers. Robots can perform tasks that are tedious, highly repetitive or long-duration. Robots can perform precursor tasks, such as reconnaissance, which help prepare for future human activity. Robots can work in support of astronauts, assisting or performing tasks in parallel. Robots can also perform "follow-up" work, completing tasks designated or started by humans. In this paper, we summarize the development and testing of robots designed to improve future human exploration of space.

  8. [Human physiology: kidney].

    Science.gov (United States)

    Natochin, Iu V

    2010-01-01

    The content of human physiology as an independent part of current physiology is discussed. Substantiated is the point that subjects of human physiology are not only special sections of physiology where functions are inherent only in human (physiology of intellectual activity, speech, labor, sport), but also in peculiarities of functions, specificity of regulation of each of physiological systems. By the example of physiology of kidney and water-salt balance there are shown borders of norm, peculiarities of regulation in human, new chapters of renal physiology which have appeared in connection with achievements of molecular physiology.

  9. Photography after the Human

    OpenAIRE

    Zylinska, Joanna

    2016-01-01

    How can we visualise and subsequently reimagine the abstraction that is the extinction of human species while there is still time? The article addresses this question by considering the existence of images – and, in particular, light-induced mechanical images known as photographs – after the human. The “after the human” designation does not just refer to the material disappearance of the human in some kind of distant future, but also to the present imagining of the disappearance of the human ...

  10. Application of CE-MS to examination of black inkjet printing inks for forensic purposes.

    Science.gov (United States)

    Kula, Agnieszka; Król, Małgorzata; Wietecha-Posłuszny, Renata; Woźniakiewicz, Michał; Kościelniak, Paweł

    2014-10-01

    The potential of capillary electrophoresis coupled to mass spectrometry with electrospray ion source and time of flight analyser (CE-ESI-TOF-MS) in the analysis of inkjet inks was investigated. The developed and validated method allowed reliable and repeatable analysis of black inkjet inks extracted from printouts. Over a dozen inkjet printouts printed on various printer models from different manufacturers were analysed under selected conditions to determine the variation of chemical composition of inks between different brands and types. It was ascertained that the developed method is capable of revealing qualitative differences between ink samples. For most of the investigated inks, the studies showed the presence of a characteristic mass spectrum originating from the surfactant or polymer. The mass distribution of the additive is distinctive for some inkjet ink producers, and allows for group identification of inks. The results showed the strength of the CE-ESI-TOF-MS method as an effective technique for forensic purposes, requiring a small amount of inkjet ink samples and giving analytical information that is useful in the identification of compounds.

  11. CEMS-investigations of AISI M2 steel after nitrogen plasma immersion ion implantation

    Energy Technology Data Exchange (ETDEWEB)

    Uglov, V.V. E-mail: info@research.bsu.unibel.by; Kholmetskii, A.L.; Kuleshov, A.K.; Fedotova, J.A.; Rusalsky, D.P.; Khodasevich, V.V.; Ruebenbauer, K.; Richter, E.; Guenzel, R.; Parascandola, S

    1999-01-02

    Plasma-immersion ion implantation (PIII) and high-current ion implantation (HCII) of nitrogen into M2 steel were carried out. The formation of a multilayer system consisting of a surface layer of austenite on top of {epsilon}-Fe{sub 3}N nitride precipitates was manifested in M2 steel after PIII. HCII forms a thick (more than 14 {mu}m) layer with {epsilon}-Fe{sub 3}N precipitates. Apparently, the formation of the austenite layer after PIII is connected with a local tempering of the steel surface by the pulsed nitrogen ion beam.

  12. Liquido cefalorraqueano no récem-nascido pré-termo sadio

    Directory of Open Access Journals (Sweden)

    F. A. C. V. Vaz

    1977-09-01

    Full Text Available Estudo da composição do LCR de 54 recém-nascidos prematuros sadios no segundo dia de vida. Os prematuros estudados precediam de gestações sem inter-corrências com parto não-traumático, apresentavam Apgar entre 6 e 9 aos 5 minutos de vida e não apresentavam anormalidades quanto ao exame clínico, neurológico, hematimétrico e gasométrico. Da composição do LCR foram estu-dades a citometria e as concentrações de proteínas totais, glicose, bilirrubina e hemoglobina. As estimativas encontradas permitem aceitar como limites das variações fisiológicas da composição do LCR do RN-PT os seguintes valores: leucócitos até 16 por mm ³; hemácias até 1.280 por mm3; proteínas totais até 300 mg/100 ml; bilirrubina de 10 a 80 µM/l; hemoglobina até 8 µM/l; glicose: cerca de 2/3 da concentração no sangue. Em relação à composição do LCR de 79 recém-nascidos normais a termo, avaliada mediante os mesmos métodos e no mesmo laboratório, são significativamente maiores as concentrações de proteínas totais e de bilirrubina, bem como estar presente a hemoglobina, pigmento não demonstrado no recém-nascido a termo. É discutida a importância da imaturidade da barreira hêmato-liquórica quanto às características do LCR apontadas, considerando-se encontrar-se ela ainda menos diferenciada no recém-nascido prematuro que no recém-nascido a termo.

  13. High volume Pozzolan concrete:three years of industrial experience in Texas with CemPozz

    OpenAIRE

    Pike, Clinton W; Ronin, Vladimir; ELFGREN, Lennart

    2009-01-01

    High Volume Pozzolan Concrete (HVPC) can be manufactured with low carbon dioxide footprint and energy consumption with the help of a new technology based on Energetically Modified Cement (EMC). The technology consists of mechanical processing a blend of ordinary portland cement (PC) and a pozzolan (Class F fly ash) through multiple high intensity grinding mills. The process imparts an increased surface activation of the PC and the pozzolan particles. Fly ash may be processed with all cements ...

  14. CONCURRENT ENGINEERING MODEL (CEM ANALYSIS ON LOGISTICS DESIGN PARAMETERS – A CASE STUDY

    Directory of Open Access Journals (Sweden)

    J.S. Gnanasekaran

    2012-01-01

    Full Text Available

    ENGLISH ABSTRACT: Logistics engineering can be divided into internal or in-plant logistics and external manufacturing logistics. Internal (in-plant logistics include material handling, warehousing, and storage systems, while external manufacturing logistics include transportation. Both must be integrated to minimise costs at a competitive level of service. For example, plant layout and production planning must consider internal logistics. The design decisions are made in the early phases of product design, and development will have a significant effect over future manufacturing and logistical activities. In this paper, a methodology is developed and presented to minimise the design cycle time of any manufacturing firm, including their suppliers, and to maximise the whole system’s effectiveness.

    AFRIKAANSE OPSOMMING: Logistieke ingenieurswese kan verdeel word in interne of binne-aanleg logistiek en eksterne vervaardigingslogistiek. Interne (binne-aanleg logistiek behels materiaalhantering, berging en voorraadhoudingsisteme, terwyl eksterne vervaardigingslogistiek vervoer insluit. Die fasette moet geintegreer wees om koste te minimiseer by ‘n mededingende diensvlak. So byvoorbeeld moet die uitleg van ‘n aanleg en produksiebeplanning interne logistiek in aanmerking neem. Die ontwerpbesluite word geneem in die beginstadium van die produkontwerp en ontwikkeling sal ‘n betekenisvolle invloed hê op toekomstige vervaardigings- en logistieke aktiwiteite. In hierdie artikel word ‘n metodologie ontwikkel en aangebied om die ontwerpsiklustyd van enige vervaardigingsonderneming te minimiseer met inagneming van die leweransiers om sodoende die totale sisteem se effektiwiteit te maksimiseer.

  15. CEMS study of defect annealing in Fe implanted AlN

    Science.gov (United States)

    Bharuth-Ram, K.; Geburt, S.; Ronning, C.; Masenda, H.; Naidoo, D.

    2016-12-01

    An AlN thin film grown on sapphire substrate was implanted with 45 keV 57Fe and 56Fe ions at several energies to achieve a homogeneous concentration profile of approximately 2.6 at.%. in the AlN film. Conversion electron Mössbauer Spectroscopy data were collected after annealing the sample up to 900 °C. The spectra were fitted with three components, a single line attributed to small Fe clusters, and two quadrupole split doublets attributed to Fe substituting Al in the wurtzite AlN lattice and to Fe located in implantation induced lattice damage. The damage component shows significant decrease on annealing up to 900 °C, accompanied by corresponding increases in the singlet component and the substitutional Fe.

  16. The Politics of Education. ERIC/CEM State-of-the-Knowledge Series, Number 20.

    Science.gov (United States)

    Iannaccone, Laurence; Cistone, Peter J.

    Designed to provide an orientation in and foster sensitivity to the field of educational politics as it has evolved during the past decade, this monograph reviews, synthesizes, and evaluates selected literature in the field, and integrates theoretical analysis and empirical evidence. Three themes recur throughout the monograph--that there is a…

  17. Managing the Incompetent Teacher. ERIC/CEM School Management Digest Series, Number 29.

    Science.gov (United States)

    Bridges, Edwin M.; Groves, Barry

    An eight-step organizational approach to the problem of identifying, remediating, and, if necessary, dismissing incompetent teachers is described. Addressed to school superintendents, the eight steps are as follows: (1) establish "excellence in teaching" as a high priority for the district, (2) adopt and publish reasonable criteria for evaluating…

  18. Paraprofessionals. NAESP School Leadership Digest Series, Number Seven. ERIC/CEM Research Analysis Series, Number Nine.

    Science.gov (United States)

    Coppock, Nan; Templeton, Ian

    This paper outlines the history of paraprofessionals and reviews the reasons for their use. However, its main focus is on the specific ways in which these people are currently being used in the schools. The authors discuss the two major kinds of paraprofessionals -- service-oriented and instructional -- and analyze the various methods that have…

  19. CEMS studies of structural modifications of metallic glasses by ion bombardment

    Science.gov (United States)

    Miglierini, M.; Lančok, A.; Pavlovič, M.

    2010-05-01

    Fe76Mo8Cu1B15 and Fe74Nb3Cu1Si16B6 amorphous metallic alloys were exposed to ion bombardment with nitrogen ions and protons to ensure different degree of radiation damage. The radiation damage profiles were calculated in the “full cascade” mode. Conversion electron Mössbauer spectrometry was employed to scan structural modifications in the surface regions of the irradiated alloys. In Fe76Mo8Cu1B15, the irradiation with 130 keV N+ has caused a significant increase of the hyperfine magnetic fields and isomer shift due to changes in topological and chemical short-range order (SRO), respectively. No appreciable effects were revealed after bombardment with 80 keV H+ ions. Fe74Nb3Cu1Si16B6 amorphous metallic alloy was irradiated by 110 keV N+ and 37 keV H+ and only changes in chemical SRO were revealed after bombardment with nitrogen ions. The observed alternations of the structure depend primarily on the total number of displacements of the resonant atoms which are closely related to the fluence as well as type and energy of the incident ions.

  20. A CEMS search for precipitate formation in 57Fe implanted ZnO

    Science.gov (United States)

    Bharuth-Ram, Krishanlal; Masenda, Hilary; Doyle, Terence B.; Geburt, Sebastian; Ronning, Carsten; Gunnlaugsson, Harald Palle

    2012-03-01

    Conversion electron Mössbauer Spectroscopy measurements have been made on ZnO single crystals implanted with 60 keV 57Fe to 4 and 8 at.% peak concentrations, and annealed up to 800°C. The spectra show quite strong changes with annealing, but no evidence of magnetic components, thus precluding the formation of large sized precipitates or secondary phases. Above an annealing temperature of 650°C, the dominant spectral component is a doublet with hyperfine parameters typical of Fe3 + , which is attributed to Fe3 + ions in nano-precipitates ˜5 nm in size.

  1. The Management Team. ERIC/CEM Research Analysis Series, Number 43.

    Science.gov (United States)

    Hale, Norman

    The success of the management team is determined by how well planners can create self-renewing efficient management teams through which communication can easily flow. Much too depends on the leadership abilities of superintendents. Management teams are purported to increase administrator satisfaction because of increased opportunity for…

  2. Changing International Student and Business Staff Perceptions of In-Sessional EAP: Using the CEM Model

    Science.gov (United States)

    Sloan, Diane; Porter, Elizabeth

    2010-01-01

    This article addresses the question of whether the existing approach to EAP delivery implemented at the University of Northumbria is supporting the learning needs of the international student body. In addressing this the article documents the background, research and preliminary findings relating to provision of an in-sessional English for…

  3. CEMS study of corrosion products formed by NaCl aqueous solution

    Science.gov (United States)

    Nakanishi, A.

    2012-03-01

    Conversion electron Mössbauer spectroscopy was used to study corrosion products by NaCl aqueous solution. A drop of the solution is put on an iron foil and the foil is left at RT. During the evaporation of the solution, corrosion products are formed. Conversion electron Mössbauer spectra were taken at temperatures between 15 K and room temperature (RT). In the Mössbauer spectra a ferric doublet is observed at RT, but sextets are found at 15 K. These results show that the corrosion product mainly consists of γ - FeOOH and a small amount of β - FeOOH is noticed. As NaCl concentration increases, the corrosion layer becomes thick and β- FeOOH / γ - FeOOH ratio increases slightly. Consequently, it has been concluded that the produced amount of β- FeOOH increases more rapidly than that of γ - FeOOH with increasing NaCl concentration.

  4. Fully coupled CEM/CFD modelling of microwave heating in a porous medium

    OpenAIRE

    2002-01-01

    Computational results for the microwave heating of a porous material are presented in this paper. Coupled finite difference time domain and finite volume methods are used to solve equations that describe the electromagnetic field and heat and mass transfer in porous media. These equations are nonlinearly coupled through the dielectric properties which depend both on temperature and moisture content. By investigating the resonant behaviour in two-dimensional microwave cavities, the FD-TD schem...

  5. Developing Human Resources through Actualizing Human Potential

    Science.gov (United States)

    Clarken, Rodney H.

    2012-01-01

    The key to human resource development is in actualizing individual and collective thinking, feeling and choosing potentials related to our minds, hearts and wills respectively. These capacities and faculties must be balanced and regulated according to the standards of truth, love and justice for individual, community and institutional development,…

  6. Introduction to human factors

    Energy Technology Data Exchange (ETDEWEB)

    Winters, J.M.

    1988-03-01

    Some background is given on the field of human factors. The nature of problems with current human/computer interfaces is discussed, some costs are identified, ideal attributes of graceful system interfaces are outlined, and some reasons are indicated why it's not easy to fix the problems. (LEW)

  7. Biodemography of human ageing

    DEFF Research Database (Denmark)

    Vaupel, James W

    2010-01-01

    Human senescence has been delayed by a decade. This finding, documented in 1994 and bolstered since, is a fundamental discovery about the biology of human ageing, and one with profound implications for individuals, society and the economy. Remarkably, the rate of deterioration with age seems...

  8. Damping Effect of Humans

    DEFF Research Database (Denmark)

    Pedersen, Lars

    Passive humans (sitting or standing) might well be present on flooring-systems, footbridges or other structures that carry humans. An active croud of people might generate structural vibrations, and these might be problematic. The passive crowd of people, however, will interact with the structural...

  9. Report Details Human Resources

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    China issues its first white paper on human resources The Chinese Government issued a white paper on its human resources on September 10, highlighting the country’s policies to cope with employment pressures and a lack of "high-level innovative talents.

  10. Human Mind Maps

    Science.gov (United States)

    Glass, Tom

    2016-01-01

    When students generate mind maps, or concept maps, the maps are usually on paper, computer screens, or a blackboard. Human Mind Maps require few resources and little preparation. The main requirements are space where students can move around and a little creativity and imagination. Mind maps can be used for a variety of purposes, and Human Mind…

  11. Defects in Human Nature

    Institute of Scientific and Technical Information of China (English)

    黄靓

    2008-01-01

    By tracing the defects of society back to the defects of human nature, humanity's essence is proved to be inherent evil. Man's natural tendency to do evil remain harnessed through the controls and conventions imposed by civilization, however, when rules or civilization are weakened, man' s dark side is unleashed.

  12. Human Resource Construction

    Institute of Scientific and Technical Information of China (English)

    2015-01-01

    Centering on strategic objective of reform and development,CIAE formulated its objectives in human resource construction for the 13th Five-year Plan period,and achieved new apparent progress in human resource construction in 2015.1 Implementation of"LONGMA Project"

  13. Translating the human microbiome

    NARCIS (Netherlands)

    Brown, J.; Vos, de W.M.; Distefano, P.S.; Doré, J.; Huttenhower, C.; Knight, R.; Lawley, T.D.; Raes, J.; Turnbaugh, P.

    2013-01-01

    Over the past decade, an explosion of descriptive analyses from initiatives, such as the Human Microbiome Project (HMP) and the MetaHIT project, have begun to delineate the human microbiome. Inhabitants of the intestinal tract, nasal passages, oral cavities, skin, gastrointestinal tract and urogenit

  14. Cohabitation: Humans & Agriculture

    NARCIS (Netherlands)

    Woodington, W.

    2012-01-01

    This "designers' manual" is made during the TIDO-course AR0531 Smart & Bioclimatic Design. Cohabitation of humans and agriculture can be used to improve building climate, human health and the state of the world. It affects building design and requires new building components. This manual explains w

  15. Hooking Kids with Humanities.

    Science.gov (United States)

    Anstead, Neil L.

    1993-01-01

    Humanitas is part of Collaboratives for Humanities and Arts Teaching (CHART), a nationwide network funded primarily by the Rockefeller Foundation. In 11 large school districts and numerous rural districts, high school teachers, academics, artists, and business and community leaders are cooperating to promote teaching of the arts and humanities.…

  16. Human Resource Accounting

    Science.gov (United States)

    Woodruff, Robert L., Jr.

    1973-01-01

    An interview is reported which discussed the implications for the hiring, recruiting, screening and development of employees in the light of human resource accounting, here defined as the identification, accumulation and dissemination of information about human resources in dollar terms. (SA)

  17. Humanism within Globalization

    Science.gov (United States)

    Weber, Jennifer E.

    2014-01-01

    The complexity of adult learning connects it to almost all other facets of human endeavor. Consequently, the future of adult education depends, to a large extent on who participates and the quality of such participation. Quality participation, when teamed with environments committed to a concern for humanity, launches opportunities for varied…

  18. The Human Technology

    DEFF Research Database (Denmark)

    Fausing, Bent

    with fundamental human values like intuition, vision and sensing; all the qualities the technology, the industrialisation and rationalisation, or in short modernity, has been criticized for having taken away from human existence. What technology has taken away now comes back through new technology as an aid...

  19. Human Capital and Retirement

    NARCIS (Netherlands)

    P. Alders

    1999-01-01

    textabstractThis paper investigates the relation between human capital and retirement when the age of retirement is endogenous. This relation is examined in a life-cycle earnings model. An employee works full time until retirement. The worker accumulates human capital by training- on-the-job and by

  20. Manage "Human Capital" Strategically

    Science.gov (United States)

    Odden, Allan

    2011-01-01

    To strategically manage human capital in education means restructuring the entire human resource system so that schools not only recruit and retain smart and capable individuals, but also manage them in ways that support the strategic directions of the organization. These management practices must be aligned with a district's education improvement…

  1. Human Rights Improving

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    China issues a white paper on its human rights,highlighting freedom of speech on the Interne The Chinese Government released a white paper on its human rights in 2009 on September 26,highlighting the role of Internet freedom and the country’s efforts in safeguarding citizens’legitimate civil and political rights.

  2. Human Rights Guaranteed

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Report says China’s human rights plan successfully implemented According to a detailed assessment report published by China’s State Council Information Office (SCIO),all the measures outlined in the National Human Rights Action Plan of China (2009-10) had been successfully put into place by the end of 2010.

  3. Human Rights, History of

    NARCIS (Netherlands)

    de Baets, Antoon; Wright, James

    2015-01-01

    In this article, six basic debates about human rights are clarified from a historical perspective: the origin of human rights as moral rights connected to the natural law doctrine and opposed to positive rights; the wave of criticism of their abstract and absolute character by nineteenth-century lib

  4. Human to Human Transmission of Brucella Melitensis

    Directory of Open Access Journals (Sweden)

    Patrice Vigeant

    1995-01-01

    Full Text Available Human brucellosis is acquired mainly through contact with infected animal tissues, ingestion of unpasteurized dairy products or infected aerosols. Person to person transmission is still considered uncertain. The case of a woman diagnosed with proven brucellosis after her husband suffered a relapse of bacteremia with Brucella melitensis biotype 3, which was originally acquired abroad by eating goat cheese, is described. It was postulated that person to person spread of brucellosis is a likely mode of transmission in this case.

  5. Human to Human Transmission of Brucella Melitensis

    OpenAIRE

    Patrice Vigeant; Jack Mendelson; Miller, Mark A.

    1995-01-01

    Human brucellosis is acquired mainly through contact with infected animal tissues, ingestion of unpasteurized dairy products or infected aerosols. Person to person transmission is still considered uncertain. The case of a woman diagnosed with proven brucellosis after her husband suffered a relapse of bacteremia with Brucella melitensis biotype 3, which was originally acquired abroad by eating goat cheese, is described. It was postulated that person to person spread of brucellosis is a likely ...

  6. Archaea on human skin.

    Directory of Open Access Journals (Sweden)

    Alexander J Probst

    Full Text Available The recent era of exploring the human microbiome has provided valuable information on microbial inhabitants, beneficials and pathogens. Screening efforts based on DNA sequencing identified thousands of bacterial lineages associated with human skin but provided only incomplete and crude information on Archaea. Here, we report for the first time the quantification and visualization of Archaea from human skin. Based on 16 S rRNA gene copies Archaea comprised up to 4.2% of the prokaryotic skin microbiome. Most of the gene signatures analyzed belonged to the Thaumarchaeota, a group of Archaea we also found in hospitals and clean room facilities. The metabolic potential for ammonia oxidation of the skin-associated Archaea was supported by the successful detection of thaumarchaeal amoA genes in human skin samples. However, the activity and possible interaction with human epithelial cells of these associated Archaea remains an open question. Nevertheless, in this study we provide evidence that Archaea are part of the human skin microbiome and discuss their potential for ammonia turnover on human skin.

  7. Human Power Empirically Explored

    Energy Technology Data Exchange (ETDEWEB)

    Jansen, A.J.

    2011-01-18

    Harvesting energy from the users' muscular power to convert this into electricity is a relatively unknown way to power consumer products. It nevertheless offers surprising opportunities for product designers; human-powered products function independently from regular power infrastructure, are convenient and can be environmentally and economically beneficial. This work provides insight into the knowledge required to design human-powered energy systems in consumer products from a scientific perspective. It shows the developments of human-powered products from the first introduction of the BayGen Freeplay radio in 1995 till current products and provides an overview and analysis of 211 human-powered products currently on the market. Although human power is generally perceived as beneficial for the environment, this thesis shows that achieving environmental benefit is only feasible when the environmental impact of additional materials in the energy conversion system is well balanced with the energy demands of the products functionality. User testing with existing products showed a preference for speeds in the range of 70 to 190 rpm for crank lengths from 32 to 95 mm. The muscular input power varied from 5 to 21 W. The analysis of twenty graduation projects from the Faculty of Industrial Design Engineering in the field of human-powered products, offers an interesting set of additional practice based design recommendations. The knowledge based approach of human power is very powerful to support the design of human-powered products. There is substantial potential for improvements in the domains energy conversion, ergonomics and environment. This makes that human power, when applied properly, is environmentally and economically competitive over a wider range of applications than thought previously.

  8. Enhancing human capacities

    CERN Document Server

    Savulescu, Julian; Kahane, Guy

    2011-01-01

    Enhancing Human Capacities is the first to review the very latest scientific developments in human enhancement. It is unique in its examination of the ethical and policy implications of these technologies from a broad range of perspectives. Presents a rich range of perspectives on enhancement from world leading ethicists and scientists from Europe and North America The most comprehensive volume yet on the science and ethics of human enhancement Unique in providing a detailed overview of current and expected scientific advances in this area Discusses both general conceptual and ethical issues

  9. Chemical allergy in humans

    DEFF Research Database (Denmark)

    Kimber, Ian; Basketter, David A; Thyssen, Jacob P

    2014-01-01

    functional sub-populations of CD4(+) and CD8(+) T-lymphocytes. Evidence for a similar association of chemical allergy in humans with discrete T-lymphocyte populations is, however, limited. It is of some interest, therefore, that two recent articles from different teams of investigators have shed new light...... on the role of polarized T-lymphocyte responses in the development of allergic contact dermatitis and occupational asthma in humans. The implications for understanding of chemical allergy in humans are explored in this Commentary....

  10. Human pancreas development.

    Science.gov (United States)

    Jennings, Rachel E; Berry, Andrew A; Strutt, James P; Gerrard, David T; Hanley, Neil A

    2015-09-15

    A wealth of data and comprehensive reviews exist on pancreas development in mammals, primarily mice, and other vertebrates. By contrast, human pancreatic development has been less comprehensively reviewed. Here, we draw together those studies conducted directly in human embryonic and fetal tissue to provide an overview of what is known about human pancreatic development. We discuss the relevance of this work to manufacturing insulin-secreting β-cells from pluripotent stem cells and to different aspects of diabetes, especially permanent neonatal diabetes, and its underlying causes.

  11. Human Genome Project

    Energy Technology Data Exchange (ETDEWEB)

    Block, S. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Cornwall, J. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Dally, W. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Dyson, F. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Fortson, N. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Joyce, G. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Kimble, H. J. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Lewis, N. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Max, C. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Prince, T. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Schwitters, R. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Weinberger, P. [The MITRE Corporation, McLean, VA (US). JASON Program Office; Woodin, W. H. [The MITRE Corporation, McLean, VA (US). JASON Program Office

    1998-01-04

    The study reviews Department of Energy supported aspects of the United States Human Genome Project, the joint National Institutes of Health/Department of Energy program to characterize all human genetic material, to discover the set of human genes, and to render them accessible for further biological study. The study concentrates on issues of technology, quality assurance/control, and informatics relevant to current effort on the genome project and needs beyond it. Recommendations are presented on areas of the genome program that are of particular interest to and supported by the Department of Energy.

  12. Aluminium in human sweat.

    Science.gov (United States)

    Minshall, Clare; Nadal, Jodie; Exley, Christopher

    2014-01-01

    It is of burgeoning importance that the human body burden of aluminium is understood and is measured. There are surprisingly few data to describe human excretion of systemic aluminium and almost no reliable data which relate to aluminium in sweat. We have measured the aluminium content of sweat in 20 healthy volunteers following mild exercise. The concentration of aluminium ranged from 329 to 5329μg/L. These data equate to a daily excretion of between 234 and 7192μg aluminium and they strongly suggest that perspiration is the major route of excretion of systemic aluminium in humans.

  13. Human exposure to aluminium.

    Science.gov (United States)

    Exley, Christopher

    2013-10-01

    Human activities have circumvented the efficient geochemical cycling of aluminium within the lithosphere and therewith opened a door, which was previously only ajar, onto the biotic cycle to instigate and promote the accumulation of aluminium in biota and especially humans. Neither these relatively recent activities nor the entry of aluminium into the living cycle are showing any signs of abating and it is thus now imperative that we understand as fully as possible how humans are exposed to aluminium and the future consequences of a burgeoning exposure and body burden. The aluminium age is upon us and there is now an urgent need to understand how to live safely and effectively with aluminium.

  14. (Human) Resourcing For CI

    DEFF Research Database (Denmark)

    Jørgensen, Frances; S., Jacob; Kofoed, Lise Busk

    2005-01-01

    More and more, the ability to compete in today’s market is viewed as being dependent on human capital. One of the most challenging aspects of human resource management involves supplying the organization with the human capital necessary to fulfill its objectives. This task becomes especially...... and characterize the types of competencies necessary for persons involved change implementation. Data collection involved interviews and observations in three longitudinal studies in five companies based in Denmark. From these data, a list of competencies that appeared to facilitate CI implementation was compiled...

  15. Human Resource Planning

    Science.gov (United States)

    Hoffman, W. H.; Wyatt, L. L.

    1977-01-01

    By using the total resource approach, we have focused attention on the need to integrate human resource planning with other business plans and highlighted the importance of a productivity strategy. (Author)

  16. Will Technology Humanize Us?

    Science.gov (United States)

    Snider, Robert C.

    1972-01-01

    The author considers the question of whether technology will cause humanization or dehumanization in the schools. He concludes that we can not stop tecchnology; we can only give it direction and purpose. (Author/MS)

  17. Human Emotion Recognition System

    Directory of Open Access Journals (Sweden)

    Dilbag Singh

    2012-08-01

    Full Text Available This paper discusses the application of feature extraction of facial expressions with combination of neural network for the recognition of different facial emotions (happy, sad, angry, fear, surprised, neutral etc... Humans are capable of producing thousands of facial actions during communication that vary in complexity, intensity, and meaning. This paper analyses the limitations with existing system Emotion recognition using brain activity. In this paper by using an existing simulator I have achieved 97 percent accurate results and it is easy and simplest way than Emotion recognition using brain activity system. Purposed system depends upon human face as we know face also reflects the human brain activities or emotions. In this paper neural network has been used for better results. In the end of paper comparisons of existing Human Emotion Recognition System has been made with new one.

  18. Human Research Program

    Data.gov (United States)

    National Aeronautics and Space Administration — Strategically, the HRP conducts research and technology development that: 1) enables the development or modification of Agency-level human health and performance...

  19. Report Details Human Resources

    Institute of Scientific and Technical Information of China (English)

    YIN PUMIN

    2010-01-01

    @@ The Chinese Government issued a white paper on its human resources on September I0, highlighting the coun-try's policies to cope with employ-ment pressures and a lack of "high-level innovative talents."

  20. Human Papillomavirus (HPV)

    Science.gov (United States)

    ... Español Text Size Email Print Share Human Papillomavirus (HPV) Page Content Article Body According to the Centers ... and how to prevent it. How to Prevent HPV: There are 3 types of HPV vaccine: Cervarix , ...

  1. Human Papillomavirus (HPV) Vaccines

    Science.gov (United States)

    ... factors for developing them, such as taking oral contraceptives . A safety review of Gardasil in Denmark and ... of female human papillomavirus acquisition associated with first male sex partner. Journal of Infectious Diseases 2008; 197( ...

  2. Viruses and human cancer

    Energy Technology Data Exchange (ETDEWEB)

    Gallo, R.C.; Haseltine, W.; Klein, G.; Zur Hausen, H.

    1987-01-01

    This book contains papers on the following topics: Immunology and Epidemiology, Biology and Pathogenesis, Models of Pathogenesis and Treatment, Simian and Bovine Retroviruses, Human Papilloma Viruses, EBV and Herpesvirus, and Hepatitis B Virus.

  3. Human Reliability Program Overview

    Energy Technology Data Exchange (ETDEWEB)

    Bodin, Michael

    2012-09-25

    This presentation covers the high points of the Human Reliability Program, including certification/decertification, critical positions, due process, organizational structure, program components, personnel security, an overview of the US DOE reliability program, retirees and academia, and security program integration.

  4. Human Capital Tracking Tool -

    Data.gov (United States)

    Department of Transportation — AVS is now required to collect, track, and report on data from the following Flight, Business and Workforce Plan. The Human Resource Management’s Performance Target...

  5. Human Factors Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Purpose: The purpose of the Human Factors Laboratory is to further the understanding of highway user needs so that those needs can be incorporated in roadway design,...

  6. BIOETHICS AND HUMAN CLONING

    Directory of Open Access Journals (Sweden)

    Željko Kaluđerović

    2011-12-01

    Full Text Available In this paper the authors analyze the process of negotiating and beginning of the United Nations Declaration on Human Cloning as well as the paragraphs of the very Declaration. The negotiation was originally conceived as a clear bioethical debate that should have led to a general agreement to ban human cloning. However, more often it had been discussed about human rights, cultural, civil and religious differences between people and about priorities in case of eventual conflicts between different value systems. In the end, a non-binding Declaration on Human Cloning had been adopted, full of numerous compromises and ambiguous formulations, that relativized the original intention of proposer states. According to authors, it would have been better if bioethical discussion and eventual regulations on cloning mentioned in the following text had been left over to certain professional bodies, and only after the public had been fully informed about it should relevant supranational organizations have taken that into consideration.

  7. Humanism vs. Behaviorism

    Science.gov (United States)

    Hunter, Madeline

    1977-01-01

    Author argues that humanism and behaviorism are not necessarily exclusive of one another, and that principles of behaviorism, when thoughtfully applied, can lead to the achievement of humanistic goals. (RW)

  8. Bridging Humanism and Behaviorism.

    Science.gov (United States)

    Chu, Lily

    1980-01-01

    Humanistic behaviorism may provide the necessary bridge between behaviorism and humanism. Perhaps the most humanistic approach to teaching is to learn how certain changes will help students and how these changes can be accomplished. (Author/MLF)

  9. Visible Human Project

    Science.gov (United States)

    ... as the names of body parts. The National Library of Medicine thanks the men and the women who will their body to science, thereby enabling medical research and development. Further Information General Information A description of The Visible Human ...

  10. Science and Humanism

    Science.gov (United States)

    Auger, Pierre

    1971-01-01

    Science and humanism are separated so completely as to bring about the creation of two cultures quite distinct from each other within contemporary civilization. Pragmatic, rational attitudes are needed on both sides to bring them together. (DF)

  11. Scaffold with a natural mesh-like architecture: isolation, structural, and in vitro characterization.

    LENUS (Irish Health Repository)

    Burugapalli, Krishna

    2007-03-01

    An intact extracellular matrix (ECM) with a mesh-like architecture has been identified in the peri-muscular sub-serosal connective tissue (PSCT) of cholecyst (gallbladder). The PSCT layer of cholecyst wall is isolated by mechanical delamination of other layers and decellularized with a treatment with peracetic acid and ethanol solution (PES) in water to obtain the final matrix, which is referred to as cholecyst-derived ECM (CEM). CEM is cross-linked with different concentrations of glutaraldehyde (GA) to demonstrate that the susceptibility of CEM to degradation can be controlled. Quantitative and qualitative macromolecular composition assessments revealed that collagen is the primary structural component of CEM. Elastin is also present. In addition, the ultra-structural studies on CEM reveal the presence of a three-dimensional fibrous mesh-like network structure with similar nanoscale architecture on both mucosal and serosal surfaces. In vitro cell culture studies show that CEM provides a supporting structure for the attachment and proliferation of murine fibroblasts (3T3) and human umbilical vein endothelial cells (HUVEC). CEM is also shown to support the attachment and differentiation of rat adrenal pheochromocytoma cells (PC12).

  12. Human Assisted Assembly Processes

    Energy Technology Data Exchange (ETDEWEB)

    CALTON,TERRI L.; PETERS,RALPH R.

    2000-01-01

    Automatic assembly sequencing and visualization tools are valuable in determining the best assembly sequences, but without Human Factors and Figure Models (HFFMs) it is difficult to evaluate or visualize human interaction. In industry, accelerating technological advances and shorter market windows have forced companies to turn to an agile manufacturing paradigm. This trend has promoted computerized automation of product design and manufacturing processes, such as automated assembly planning. However, all automated assembly planning software tools assume that the individual components fly into their assembled configuration and generate what appear to be a perfectly valid operations, but in reality the operations cannot physically be carried out by a human. Similarly, human figure modeling algorithms may indicate that assembly operations are not feasible and consequently force design modifications; however, if they had the capability to quickly generate alternative assembly sequences, they might have identified a feasible solution. To solve this problem HFFMs must be integrated with automated assembly planning to allow engineers to verify that assembly operations are possible and to see ways to make the designs even better. Factories will very likely put humans and robots together in cooperative environments to meet the demands for customized products, for purposes including robotic and automated assembly. For robots to work harmoniously within an integrated environment with humans the robots must have cooperative operational skills. For example, in a human only environment, humans may tolerate collisions with one another if they did not cause much pain. This level of tolerance may or may not apply to robot-human environments. Humans expect that robots will be able to operate and navigate in their environments without collisions or interference. The ability to accomplish this is linked to the sensing capabilities available. Current work in the field of cooperative

  13. Human Happiness Is Sensuous

    Institute of Scientific and Technical Information of China (English)

    吕静

    2003-01-01

    All human happiness is biological happiness. That is strictly scientific. At the risk of being misunderstood. I must make it clearer: all human happiness is sensuous happiness. The spiritualists will misunderstand me. I am sure; the spiritualists and materialists must forever misunderstand each other, because they don’t talk the same language, or mean by the same word different things. Are we, too, in this problem

  14. Human Resources Accounting

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    The 21 st century will be the epoch of knowled ge economy. Knowledge economy is to develop economy on the basis of knowledge will surely become the major resources of economy development. Therefore, human resources accounting which provides such information as the ebb and follow of hu man resources investment, the size of the human resources employment, will bec ome the main stream of accounting the time of knowledge economy. To face China 's reality, to develop economy, and to flourish enterprise...

  15. Business and Human Rights

    DEFF Research Database (Denmark)

    Buhmann, Karin

    2015-01-01

    This article analyses the United Nations (UN) Guidelines on Business and Human Rights adopted in 2011 by the UN Human Rights Council from the perspective of transnational business governance interactions (TBGI) analytical framework.1 The article identifies and discusses dimensions of interaction...... in several areas of relevance to transnational business governance interaction and indicates the relevance of the TBGI approach to public regulatory transnational business governance initiatives. The analysis of the Guiding Principles as interactional transnational business governance suggests that this form...

  16. Human motricity and health

    Directory of Open Access Journals (Sweden)

    Manuel Sérgio Vieira e Cunha

    2008-06-01

    Full Text Available If human motricity science intends to study motor conduct (or actions in which the human being pursues transcendence (or surmounting, it inevitably relates to the large realm of health. What are the aspects it evinces? Transdisciplinarity, solidarity among the various knowledge types (including poetical, complexity, (where the physical is integrated but surmounted and the firm belief that to be healthy is to have in ourselves, alive and working, the capacity for surmounting anything.

  17. [Demography and human ecology].

    Science.gov (United States)

    Nazareth, J M

    1993-01-01

    At the end of the 19th century the German biologist Ernest Haekel was the first scientist to use the term ecology, which was defined as the study of relationships of organisms or groups of organisms with the environment and indicated the interdependence of the living world, including plants, animals, and humans. This concept also indicates a continuous process of adaptation of organisms to their external environment. The basic concepts of scientific ecology, which developed at the end of the 19th century, can be attributed to Darwin: the relationships between living beings and the notion of the process of adaptation to their environment. The term human ecology appeared in the early 1920s. Human ecology embodies fundamental ideas: biotype, habitat, community, biocenosis, ecosystem, biomass, interchange and equilibrium, and circulation of energy. The accumulated knowledge about human ecology is broken down using the criteria of topography (ecology of humid forests, deserts, lakes, etc.); followed by the appearance of species; and the variants of classical division: auto ecology (influence of external factors on living beings) and sinecology (the study of groups of associated organisms, i.e., natural, animal, and vegetation communities). The species are considered on the basis of equality or sinecology (all of them have the same interests), while in human ecology a species is determined by its relation to a reference group--autoecology or anthropocentric ecology. In 1911, J. Thompson bridged the gap between biological knowledge and social sciences; in 1921, H. Barrows identified human ecology as a component of geography; in 1925, L. Bernard presented the classification of ecosystems; and in 1936, Ezra Park published his work, Human Ecology, followed in 1945 by the emergence of the Chicago school. Demography and human ecology are intimately connected because population is the result of natural and migratory movements, therefore the two sciences require a methodology

  18. Evolution and human sexuality.

    Science.gov (United States)

    Gray, Peter B

    2013-12-01

    The aim of this review is to put core features of human sexuality in an evolutionary light. Toward that end, I address five topics concerning the evolution of human sexuality. First, I address theoretical foundations, including recent critiques and developments. While much traces back to Darwin and his view of sexual selection, more recent work helps refine the theoretical bases to sex differences and life history allocations to mating effort. Second, I consider central models attempting to specify the phylogenetic details regarding how hominin sexuality might have changed, with most of those models honing in on transitions from a possible chimpanzee-like ancestor to the slightly polygynous and long-term bonded sociosexual partnerships observed among most recently studied hunter-gatherers. Third, I address recent genetic and physiological data contributing to a refined understanding of human sexuality. As examples, the availability of rapidly increasing genomic information aids comparative approaches to discern signals of selection in sexuality-related phenotypes, and neuroendocrine studies of human responses to sexual stimuli provide insight into homologous and derived mechanisms. Fourth, I consider some of the most recent, large, and rigorous studies of human sexuality. These provide insights into sexual behavior across other national samples and on the Internet. Fifth, I discuss the relevance of a life course perspective to understanding the evolution of human sexuality. Most research on the evolution of human sexuality focuses on young adults. Yet humans are sexual beings from gestation to death, albeit in different ways across the life course, and in ways that can be theoretically couched within life history theory.

  19. Genomics of human longevity.

    Science.gov (United States)

    Slagboom, P E; Beekman, M; Passtoors, W M; Deelen, J; Vaarhorst, A A M; Boer, J M; van den Akker, E B; van Heemst, D; de Craen, A J M; Maier, A B; Rozing, M; Mooijaart, S P; Heijmans, B T; Westendorp, R G J

    2011-01-12

    In animal models, single-gene mutations in genes involved in insulin/IGF and target of rapamycin signalling pathways extend lifespan to a considerable extent. The genetic, genomic and epigenetic influences on human longevity are expected to be much more complex. Strikingly however, beneficial metabolic and cellular features of long-lived families resemble those in animals for whom the lifespan is extended by applying genetic manipulation and, especially, dietary restriction. Candidate gene studies in humans support the notion that human orthologues from longevity genes identified in lower species do contribute to longevity but that the influence of the genetic variants involved is small. Here we discuss how an integration of novel study designs, labour-intensive biobanking, deep phenotyping and genomic research may provide insights into the mechanisms that drive human longevity and healthy ageing, beyond the associations usually provided by molecular and genetic epidemiology. Although prospective studies of humans from the cradle to the grave have never been performed, it is feasible to extract life histories from different cohorts jointly covering the molecular changes that occur with age from early development all the way up to the age at death. By the integration of research in different study cohorts, and with research in animal models, biological research into human longevity is thus making considerable progress.

  20. Human Milk Fortification.

    Science.gov (United States)

    Simmer, Karen

    2015-01-01

    Human milk is the feed of choice for preterm infants. However, human milk does not provide enough nutrition, especially protein, for preterm infants to achieve target growth rates similar to those in utero (15-20 g/kg per day). Fortifiers for human milk, manufactured from bovine milk, are commercially available and routinely used for patients born milk fortifier that is manufactured from donor human milk is available in some developed countries and may confer some clinical benefits, including a reduction in necrotizing enterocolitis. Fortification can be added in a standardized protocol as per manufacturers' instructions. Human milk composition can be analyzed and fortification individualized to take into account the large variation from mother to mother. Alternatively, fortification can be increased in a stepwise manner based on assumed composition while monitoring blood urea levels for safety. The current aim is to prevent preterm infants dropping percentiles and falling below the 10th percentile at 36 weeks' corrected gestational age or discharge home. More data are required on how best to fortify human milk for preterm infants to achieve optimal growth, development and health outcomes in the long term. There is an urgent need for well-designed and informed randomized clinical trials in this vulnerable preterm population.

  1. Human Factors Review Plan

    Energy Technology Data Exchange (ETDEWEB)

    Paramore, B.; Peterson, L.R. (eds.)

    1985-12-01

    ''Human Factors'' is concerned with the incorporation of human user considerations into a system in order to maximize human reliability and reduce errors. This Review Plan is intended to assist in the assessment of human factors conditions in existing DOE facilities. In addition to specifying assessment methodologies, the plan describes techniques for improving conditions which are found to not adequately support reliable human performance. The following topics are addressed: (1) selection of areas for review describes techniques for needs assessment to assist in selecting and prioritizing areas for review; (2) human factors engineering review is concerned with optimizing the interfaces between people and equipment and people and their work environment; (3) procedures review evaluates completeness and accuracy of procedures, as well as their usability and management; (4) organizational interface review is concerned with communication and coordination between all levels of an organization; and (5) training review evaluates training program criteria such as those involving: trainee selection, qualification of training staff, content and conduct of training, requalification training, and program management.

  2. A WORLD BEYOND HUMAN

    Directory of Open Access Journals (Sweden)

    David Abram

    2013-12-01

    Full Text Available From an initial project to investigate the relationship between magic and traditional medicine as practiced by shamans in Southern rural Asia, the focus of attention gradually shifted to an awareness of the negotiation traditional medicine people or shamans exert between the human community and the larger community of beings. This attentiveness to a more-than-human world does not occur at a supernatural domain above nature or inside her personal self but is the result of the shaman’s special ability to project her consciousness horizontally to other forms of sensibility with which human existence is interwoven. The ecological function of the shaman is to maintain a constant balance between what is taken and what is given from the human community to the larger community. The spirits of indigenous cultures are not defined in opposition to materiality but are essentially those modes of intelligence or awareness that do not possess a human form. By exploring different landscapes, and the sensibility living in them, a new sensitivity is awoken that allows for communication with those intelligences. However, the drowning of these other voices in Western culture, which reduces otherness to an object, creates an uneasiness that is hardly perceived except as an inability to interact with anything more-than-human and its dire consequences in the form of “civilization’s” destructive behavior.

  3. Human bites - self-care

    Science.gov (United States)

    Bites - human - self-care ... Human bites can occur in 2 ways: If someone bites you If your hand comes into contact ... bite to express anger or other negative feelings. Human bites may be more dangerous than animal bites. ...

  4. Testing for Human Immunodeficiency Virus

    Science.gov (United States)

    ... education Fact Sheet PFS005: Testing for Human Immunodeficiency Virus AUGUST 2015 • Reasons for Getting Tested • Who Should ... For More Information • Glossary Testing for Human Immunodeficiency Virus Human immunodeficiency virus (HIV) is the virus that ...

  5. Comparison of hydrodynamically closed isotachophoresis-capillary zone electrophoresis with hydrodynamically open capillary zone electrophoresis hyphenated with tandem mass spectrometry in drug analysis: pheniramine, its metabolite and phenylephrine in human urine.

    Science.gov (United States)

    Piešťanský, Juraj; Maráková, Katarína; Kovaľ, Marián; Mikuš, Peter

    2014-09-05

    The advanced two dimensional isotachophoresis (ITP)-capillary zone electrophoresis (CZE) hyphenated with tandem mass spectrometry (MS/MS, here triple quadrupole, QqQ) was developed in this work to demonstrate analytical potentialities of this approach in the analysis of drugs in multicomponent ionic matrices. Pheniramine (PHM), phenylephrine (PHE), paracetamol (PCM) and their potential metabolic products were taken for the analysis by the ITP-CZE-ESI-QqQ technique working in hydrodynamically closed CE separation system and then a comparison with the conventional (hydrodynamically open) CZE-ESI-QqQ technique was made. The ITP-CZE-ESI-QqQ method was favorable in terms of obtainable selectivity (due to highly effective heart-cut analysis), concentration limits of detection (LOD at pgmL(-1) levels due to enhanced sample load capacity and ITP preconcentration), sample handling (on-line sample pretreatment, i.e. clean-up, preconcentration, preseparation), and, by that, possibilities for future automation and miniaturization. On the other hand, this experimental arrangement, in contrast to the CZE-ESI-QqQ arrangement supported by an electroosmotic flow, is principally limited to the analysis of uniformly (i.e. positively or negatively) charged analytes in one run without any possibilities to analyze neutral compounds (here, PCM and neutral or acidic metabolites of the drugs had to be excluded from the analysis). Hence, these general characteristics should be considered when choosing a proper analytical CE-MS approach for a given biomedical application. Here, the analytical potential of the ITP-CZE-ESI-QqQ method was demonstrated showing the real time profiles of excreted targeted drugs and metabolite (PHM, PHE, M-PHM) in human urine after the administration of one dose of Theraflu(®) to the volunteers.

  6. Philosophical foundations of human rights

    CERN Document Server

    Liao, Matthew S

    2015-01-01

    What makes something a human right? What is the relationship between the moral foundations of human rights and human rights law? What are the difficulties of appealing to human rights? This book offers the first comprehensive survey of current thinking on the philosophical foundations of human rights. Divided into four parts, this book focusses firstly on the moral grounds of human rights, for example in our dignity, agency, interests or needs. 'Secondly, it looks at the implications that different moral perspectives on human rights bear for human rights law and politics. Thirdly, it discusses specific and topical human rights including freedom of expression and religion, security, health and more controversial rights such as a human right to subsistence. The final part discusses nuanced critical and reformative views on human rights from feminist, Kantian and relativist perspectives among others. The essays represent new and canonical research by leading scholars in the field. Each part is comprised of a set...

  7. Why Geo-Humanities

    Science.gov (United States)

    Graells, Robert Casals i.; Sibilla, Anna; Bohle, Martin

    2016-04-01

    Anthropogenic global change is a composite process. It consists of societal processes (in the 'noosphere') and natural processes (in the 'bio-geosphere'). The 'noosphere' is the ensemble of social, cultural or political insights ('shared subjective mental concepts') of people. Understanding the composite of societal and natural processes ('human geo-biosphere intersections'), which shapes the features of anthropogenic global change, would benefit from a description that draws equally on natural sciences, social sciences and humanities. To that end it is suggested to develop a concept of 'geo-humanities': This essay presents some aspects of its scope, discussing "knowledge that is to manage", "intentions that are to shape", "choices that are to justify" and "complexity that is to handle". Managing knowledge: That people understand anthropogenic global change requires their insights into how 'human geosphere intersections' function. Insights are formed ('processed') in the noosphere by means of interactions between people. Understanding how 'human geosphere intersections' functions combines scientific, engineering and economic studies with studies of the dynamics of the noosphere. Shaping intentions: During the last century anthropogenic global change developed as the collateral outcome of humankind's accumulated actions. It is caused by the number of people, the patterns of their consumption of resources, and the alterations of their environments. Nowadays, anthropogenic global chance is either an intentional negligence or a conscious act. Justifying choices: Humanity has alternatives how to alter Earth at planetary scale consciously. For example, there is a choice to alter the geo-biosphere or to adjust the noosphere. Whatever the choice, it will depend on people's world-views, cultures and preferences. Thus beyond issues whether science and technology are 'sound' overarching societal issues are to tackle, such as: (i) how to appropriate and distribute natural

  8. [Human ehrlichiosis. Review].

    Science.gov (United States)

    Arraga-Alvarado, C

    1994-12-01

    Human ehrlichiosis is a newly recognized tick-borne disease. Since 1935 Ehrlichia canis has been known as a cause of illness in dogs and other canine species, and for a few years it was related with human disease. In 1990, Ehrlichia chaffeensis was isolated from a man suspected of having ehrlichiosis. Partial sequencing of the rRNAS from the human isolate and E. canis, indicated that they are 98.7% related. More recently (May 1994) an "human granulocytic ehrlichiosis" have been reported in USA. PCR amplification and sequence of 16S rDNA, showed that the human isolate was virtually identical to those reported for E. phagocytophila y E. equi, organisms that cause ehrlichiosis in rumiant and in horses. Most patients shows fever, headache, malaise, nausea or vomiting, anorexia and in a minority of cases rash is present. Some of them have complications such as pulmonary infiltrates, gastrointestinal problems, renal dysfunction or failure, hepatoesplenomegaly, neurologic abnormalities, DIC and some times death. Leucopenia, thrombocytopenia and elevated liver enzyme values have been common findings. Tetracycline and cloramphenicol have been using in adults and children as especific theraphy.

  9. The human serum metabolome.

    Directory of Open Access Journals (Sweden)

    Nikolaos Psychogios

    Full Text Available Continuing improvements in analytical technology along with an increased interest in performing comprehensive, quantitative metabolic profiling, is leading to increased interest pressures within the metabolomics community to develop centralized metabolite reference resources for certain clinically important biofluids, such as cerebrospinal fluid, urine and blood. As part of an ongoing effort to systematically characterize the human metabolome through the Human Metabolome Project, we have undertaken the task of characterizing the human serum metabolome. In doing so, we have combined targeted and non-targeted NMR, GC-MS and LC-MS methods with computer-aided literature mining to identify and quantify a comprehensive, if not absolutely complete, set of metabolites commonly detected and quantified (with today's technology in the human serum metabolome. Our use of multiple metabolomics platforms and technologies allowed us to substantially enhance the level of metabolome coverage while critically assessing the relative strengths and weaknesses of these platforms or technologies. Tables containing the complete set of 4229 confirmed and highly probable human serum compounds, their concentrations, related literature references and links to their known disease associations are freely available at http://www.serummetabolome.ca.

  10. HUMAN RESOURCES MANAGEMENT CONTROL

    Directory of Open Access Journals (Sweden)

    Mihaela DUMITRANA

    2009-12-01

    Full Text Available We consider that the human being is the most important asset of the company. In the context of the socialpolitics of the company and of the objectives of the man agement, along with all the other departments, the managementcontrol contributes to the resources of the entity. In this paper we want to demonstrate the importance of human capitalas one of the key factors of the growth process in all countries and the necessity of the organization of a managementcontrol to be able to provide information about human resources. Which are the axes for the reporting of theinformation concerning the human resources? What kind of reports and indicators should be prepared by companiesfor management? Which are the main concerns of the companies connected to profitableness – efficiency – wages? Theanswer will be found in this paper. In the current conditions in which personnel restructuring processes, combined withthe costs reduction efforts and new requirements arise in the management control of the company, our paper willpresent how we can make a correct assessment of the value created by the human resources component of the company

  11. Humanity and Sustainability

    Directory of Open Access Journals (Sweden)

    Shu-Kun Lin

    2011-09-01

    Full Text Available So far our open access publishing company MDPI (Multidisciplinary Digital Publishing Institute has published mainly science, medicine and technology journals. To become a multidisciplinary publisher, we launched the journal Sustainability [1]. More recently, we started to run several social science journals, including Societies [2], Religions [3], Administrative Sciences [4] and Behavioral Sciences [5]. Today we published the first paper [6] of the inaugural issue of Humanities (ISSN 2076-0787. This will be an international open access journal, publishing scholarly papers of high quality across all humanities disciplines. As a publisher, I would like to publish journals surrounding the topics of sustainability and I believe the humanities as a discipline of academic studies are very important. As a scientist, I believed science and technology will only benefit human beings. I was raised in a small village, living a very primitive life in a peasant family: no electricity, no machines, of course no TV and no refrigerator. Now, the life of my children is completely different. Even my own life has completely changed. I have witnessed very rapid changes: more and more machines are used to consume mineral resources and energy and to pollute the environment, in order to produce more and more powerful machines (we are also launching a journal titled Machines, in which the relationship between Man and machine should be an interesting topic.. Machines are more and more like human individuals consuming resources themselves (we are launching a journal titled Resources. [...

  12. Human-Robot Interaction

    Science.gov (United States)

    Rochlis-Zumbado, Jennifer; Sandor, Aniko; Ezer, Neta

    2012-01-01

    Risk of Inadequate Design of Human and Automation/Robotic Integration (HARI) is a new Human Research Program (HRP) risk. HRI is a research area that seeks to understand the complex relationship among variables that affect the way humans and robots work together to accomplish goals. The DRP addresses three major HRI study areas that will provide appropriate information for navigation guidance to a teleoperator of a robot system, and contribute to the closure of currently identified HRP gaps: (1) Overlays -- Use of overlays for teleoperation to augment the information available on the video feed (2) Camera views -- Type and arrangement of camera views for better task performance and awareness of surroundings (3) Command modalities -- Development of gesture and voice command vocabularies

  13. Abortion and human rights.

    Science.gov (United States)

    Shaw, Dorothy

    2010-10-01

    Abortion has been a reality in women's lives since the beginning of recorded history, typically with a high risk of fatal consequences, until the last century when evolutions in the field of medicine, including techniques of safe abortion and effective methods of family planning, could have ended the need to seek unsafe abortion. The context of women's lives globally is an important but often ignored variable, increasingly recognised in evolving human rights especially related to gender and reproduction. International and regional human rights instruments are being invoked where national laws result in violations of human rights such as health and life. The individual right to conscientious objection must be respected and better understood, and is not absolute. Health professional organisations have a role to play in clarifying responsibilities consistent with national laws and respecting reproductive rights. Seeking common ground using evidence rather than polarised opinion can assist the future focus.

  14. Scientists and Human Rights

    Science.gov (United States)

    Makdisi, Yousef

    2012-02-01

    The American Physical Society has a long history of involvement in defense of human rights. The Committee on International Freedom of Scientists was formed in the mid seventies as a subcommittee within the Panel On Public Affairs ``to deal with matters of an international nature that endangers the abilities of scientists to function as scientists'' and by 1980 it was established as an independent committee. In this presentation I will describe some aspects of the early history and the impetus that led to such an advocacy, the methods employed then and how they evolved to the present CIFS responsibility ``for monitoring concerns regarding human rights for scientists throughout the world''. I will also describe the current approach and some sample cases the committee has pursued recently, the interaction with other human rights organizations, and touch upon some venues through which the community can engage to help in this noble cause.

  15. Human Systems Design Criteria

    DEFF Research Database (Denmark)

    Rasmussen, Jens

    1982-01-01

    the necessary functional qualities but also the needed human qualities. The author's main argument is, that the design process should be a dialectical synthesis of the two points of view: Man as a System Component, and System as Man's Environment. Based on a man's presentation of the state of the art a set...... of design criteria is suggested and their relevance discussed. The point is to focus on the operator rather than on the computer. The crucial question is not to program the computer to work on its own conditions, but to “program” the operator to function on human conditions.......This paper deals with the problem of designing more humanised computer systems. This problem can be formally described as the need for defining human design criteria, which — if used in the design process - will secure that the systems designed get the relevant qualities. That is not only...

  16. HUMAN MISSION OF EDUCATION

    Directory of Open Access Journals (Sweden)

    Suzana Miovska Spaseva

    2013-06-01

    Full Text Available The article examines the complex role and great responsibility of the education today in development of the moral strength and human values of the children and youth. At the beginning of the article the author reconsiders the pedagogical ideas of Maria Montessori and her concept of education for peace as an instrument for reconstruction of the society and for improvement of the human living. Than the analysis of the moral values in the contemporary society is made and several issues and dilemmas are discussed referring the value disorientation of the youth and the importance of the models of adult’s moral behavior in their search for personal identity. On the basis of this analysis, the human dimension of the education is elaborated enhancing the need for its understanding as support of development, which is based on several crucial elements: love, freedom and spirit of community.

  17. Social cognition in humans

    DEFF Research Database (Denmark)

    Frith, Christopher; Frith, Uta

    2007-01-01

    We review a diversity of studies of human social interaction and highlight the importance of social signals. We also discuss recent findings from social cognitive neuroscience that explore the brain basis of the capacity for processing social signals. These signals enable us to learn about...... the world from others, to learn about other people, and to create a shared social world. Social signals can be processed automatically by the receiver and may be unconsciously emitted by the sender. These signals are non-verbal and are responsible for social learning in the first year of life. Social...... signals can also be processed consciously and this allows automatic processing to be modulated and overruled. Evidence for this higher-level social processing is abundant from about 18 months of age in humans, while evidence is sparse for non-human animals. We suggest that deliberate social signalling...

  18. Human Relations-skolen

    DEFF Research Database (Denmark)

    Scheuer, Steen

    2014-01-01

    Human Relations-skolen er en samlebetegnelse for to forskningsretninger, som tilsammen bidrog som nogle af de første til at indkredse og belyse de mellemmenneskelige relationers betydning for motivation og trivsel i arbejdslivet, og som skulle få stor ind"ydelse ikke bare på organisationsteorien......, men også arbejdssociologien, arbejdspsykologien og human resource development. Den første retning udsprang af de såkaldte Hawthorne-eksperimenter og psykologen Elton Mayos bearbejdelse af resultaterne derfra. Den anden er en løsere gruppering bestående af navne som Abraham Maslow og Frederick Herzberg......, som formulerede en række teorier og modeller om menneskets motivation, trivsel og behov i arbejdslivet. Selvom de ikke nødvendigvis relaterede sig til hinandens arbejde, er de forskellige bidragsydere i dag kendt som repræsentanter for den paradigmatiske betegnelse Human Relations. Undertiden skelnes...

  19. Human Environmental Disease Network

    DEFF Research Database (Denmark)

    Taboureau, Olivier; Audouze, Karine

    2016-01-01

    During the past decades, many epidemiological, toxicological and biological studies have been performed to assess the role of environmental chemicals as potential toxicants for diverse human disorders. However, the relationships between diseases based on chemical exposure have been rarely studied...... by computational biology. We developed a human environmental disease network (EDN) to explore and suggest novel disease-disease and chemical-disease relationships. The presented scored EDN model is built upon the integration on systems biology and chemical toxicology using chemical contaminants information...... and their disease relationships from the reported TDDB database. The resulting human EDN takes into consideration the level of evidence of the toxicant-disease relationships allowing including some degrees of significance in the disease-disease associations. Such network can be used to identify uncharacterized...

  20. NOOSPHERE HUMAN COMMUNITY

    Directory of Open Access Journals (Sweden)

    Novozhilova Elena Olegovna

    2013-01-01

    Full Text Available The author dwells upon typical features of noosphere human communities, assessing prospects and hazards of genetic engineering, namely of recombinant DNA technology. Background: Socio-historical ecology ushers in a new approach to studying society in its relation to nature. This interrelation is regarded as a series of socio-ecological transformations ending up in certain types of socio-ecological systems being formed. One of such historical types is represented by a noosphere human community [1]. Results: A number of characteristic features of this kind of community have been outlined, namely: its existence and functioning on global scale, major role of information in making up social wealth, creation of living matter. Conclusion: The noosphere human community is currently the latest stage in the sequence of historical types of socio-ecological systems. Widespread use of information and genetic technology may enable noosphere people to create in future a totally man-made world superseding evolutionary biosphere.

  1. Helicopter human factors

    Science.gov (United States)

    Hart, Sandra G.

    1988-01-01

    The state-of-the-art helicopter and its pilot are examined using the tools of human-factors analysis. The significant role of human error in helicopter accidents is discussed; the history of human-factors research on helicopters is briefly traced; the typical flight tasks are described; and the noise, vibration, and temperature conditions typical of modern military helicopters are characterized. Also considered are helicopter controls, cockpit instruments and displays, and the impact of cockpit design on pilot workload. Particular attention is given to possible advanced-technology improvements, such as control stabilization and augmentation, FBW and fly-by-light systems, multifunction displays, night-vision goggles, pilot night-vision systems, night-vision displays with superimposed symbols, target acquisition and designation systems, and aural displays. Diagrams, drawings, and photographs are provided.

  2. Human immune system variation.

    Science.gov (United States)

    Brodin, Petter; Davis, Mark M

    2017-01-01

    The human immune system is highly variable between individuals but relatively stable over time within a given person. Recent conceptual and technological advances have enabled systems immunology analyses, which reveal the composition of immune cells and proteins in populations of healthy individuals. The range of variation and some specific influences that shape an individual's immune system is now becoming clearer. Human immune systems vary as a consequence of heritable and non-heritable influences, but symbiotic and pathogenic microbes and other non-heritable influences explain most of this variation. Understanding when and how such influences shape the human immune system is key for defining metrics of immunological health and understanding the risk of immune-mediated and infectious diseases.

  3. Human Security Agendas

    Institute of Scientific and Technical Information of China (English)

    Alan Hunter

    2012-01-01

    Ⅰ.IntroductionThe need for governments and international organisations to gain a better understanding of "security" is ever more urgent.For example in the conflict in Libya in early 2011,many security dilemmas were visible:the protection of Libyan civilians,the security of the regime,whether and how the UN or NATO should intervene,whether Europe would be threatened with a massive refugee flow,how to protect or evacuate foreign citizens (including Chinese),how to secure food and medical supplies in the midst of armed conflict.Such events may be termed "complex emergencies" which often raise legal, military and humanitarian issues simultaneously.International law and practice do not provide clear guidelines on such situations,and responses can be random,contingent on a variety of factors.Traditional concepts of security,for example protection of national borders,are certainly still relevant and legally enforceable,but more sophisticated concepts are needed to respond to security dilemmas in today's globalised world.Human security as a concept was first developed within the UN system in the 1990s,and set out,for example,in Human Security Now [1] The first section of this paper tracks the development of Human Security discourse,and also examines the broadening of the "security"concept in recent years.The second section reports on institutions with a specific interest in Human Security,for example within the UN system and in universities.The third section acknowledges some critiques of the Human Security paradigm.The last section reports on new directions that may enrich the Human Security agenda.

  4. Handbook of human computation

    CERN Document Server

    Michelucci, Pietro

    2013-01-01

    This volume addresses the emerging area of human computation, The chapters, written by leading international researchers, explore existing and future opportunities to combine the respective strengths of both humans and machines in order to create powerful problem-solving capabilities. The book bridges scientific communities, capturing and integrating the unique perspective and achievements of each. It coalesces contributions from industry and across related disciplines in order to motivate, define, and anticipate the future of this exciting new frontier in science and cultural evolution. Reade

  5. Human migraine models

    DEFF Research Database (Denmark)

    Iversen, Helle Klingenberg

    2001-01-01

    The need for experimental models is obvious. In animal models it is possible to study vascular responses, neurogenic inflammation, c-fos expression etc. However, the pathophysiology of migraine remains unsolved, why results from animal studies not directly can be related to the migraine attack......, which is a human experience. A set-up for investigations of experimental headache and migraine in humans, has been evaluated and headache mechanisms explored by using nitroglycerin and other headache-inducing agents. Nitric oxide (NO) or other parts of the NO activated cascade seems to be responsible...... for the induced headache and migraine. Perspectives are discussed....

  6. We Are Human Beings

    Science.gov (United States)

    McGee, Andrew

    2016-01-01

    In this paper, I examine Jeff McMahan’s arguments for his claim that we are not human organisms, and the arguments of Derek Parfit to the same effect in a recent paper. McMahan uses these arguments to derive conclusions concerning the moral status of embryos and permanent vegetative state (PVS) patients. My claim will be that neither thinker has successfully shown that we are not human beings, and therefore these arguments do not establish the ethical conclusions that McMahan has sought to draw from the arguments in respect of the moral status of embryos and PVS patients. PMID:26810918

  7. Business and Human Rights

    DEFF Research Database (Denmark)

    Buhmann, Karin

    This article analyses the United Nations (UN) Guidelines on Business and Human Rights adopted in 2011 by the UN Human Rights Council from the perspective of Transnational Business Governance Interactions (TBGI) analytical framework (Eberlein et al. 2014). The article identifies and discusses...... that the UN Guiding Principles are unique in several respects of relevance to transnational business governance interaction and indicate the relevance of the TBGI approach to public regulatory transnational business governance initiatives. The analysis of the Guiding Principles as interactional transnational...... business governance suggests that this form of governance offers prospects for public institutions as a means towards regulating global sustainability concerns....

  8. Understanding digital humanities

    CERN Document Server

    Berry, D

    2012-01-01

    The application of new computational techniques and visualisation technologies in the Arts and Humanities are resulting in fresh approaches and methodologies for the study of new and traditional corpora. This 'computational turn' takes the methods and techniques from computer science to create innovative means of close and distant reading. This book discusses the implications and applications of 'Digital Humanities' and the questions raised when using algorithmic techniques. Key researchers in the field provide a comprehensive introduction to important debates surrounding issues such as th

  9. Artificial human vision.

    Science.gov (United States)

    Dowling, Jason

    2005-01-01

    Can vision be restored to the blind? As early as 1929 it was discovered that stimulating the visual cortex of an individual led to the perception of spots of light, known as phosphenes [1] . The aim of artificial human vision systems is to attempt to utilize the perception of phosphenes to provide a useful substitute for normal vision. Currently, four locations for electrical stimulation are being investigated; behind the retina (subretinal), in front of the retina (epiretinal), the optic nerve and the visual cortex (using intra- and surface electrodes). This review discusses artificial human vision technology and requirements, and reviews the current development projects.

  10. When computers were human

    CERN Document Server

    Grier, David Alan

    2013-01-01

    Before Palm Pilots and iPods, PCs and laptops, the term ""computer"" referred to the people who did scientific calculations by hand. These workers were neither calculating geniuses nor idiot savants but knowledgeable people who, in other circumstances, might have become scientists in their own right. When Computers Were Human represents the first in-depth account of this little-known, 200-year epoch in the history of science and technology. Beginning with the story of his own grandmother, who was trained as a human computer, David Alan Grier provides a poignant introduction to the wider wo

  11. Ayahuasca and human destiny.

    Science.gov (United States)

    McKenna, Dennis J

    2005-06-01

    In this essay, the author shares his personal reflections gleaned from a lifetime of research with ayahuasca, and speculates on the societal, political, planetary, and evolutionary implications of humanity's aeons-old symbiosis with this shamanic plant. The thesis is developed that at this critical historical juncture, ayahuasca has developed a strategy to broadcast its message to a wider world--a reflection of the urgent need to avert global ecological catastrophe. While ayahuasca has much to teach us, the critical question is, will humanity hear it, and heed it, in time?

  12. Human concentrative nucleoside transporter 3 transfection with ultrasound and microbubbles in nucleoside transport deficient HEK293 cells greatly increases gemcitabine uptake.

    Science.gov (United States)

    Paproski, Robert J; Yao, Sylvia Y M; Favis, Nicole; Evans, David; Young, James D; Cass, Carol E; Zemp, Roger J

    2013-01-01

    Gemcitabine is a hydrophilic clinical anticancer drug that requires nucleoside transporters to cross plasma membranes and enter cells. Pancreatic adenocarcinomas with low levels of nucleoside transporters are generally resistant to gemcitabine and are currently a clinical problem. We tested whether transfection of human concentrative nucleoside transporter 3 (hCNT3) using ultrasound and lipid stabilized microbubbles could increase gemcitabine uptake and sensitivity in HEK293 cells made nucleoside transport deficient by pharmacologic treatment with dilazep. To our knowledge, no published data exists regarding the utility of using hCNT3 as a therapeutic gene to reverse gemcitabine resistance. Our ultrasound transfection system--capable of transfection of cell cultures, mouse muscle and xenograft CEM/araC tumors--increased hCNT3 mRNA and (3)H-gemcitabine uptake by >2,000- and 3,400-fold, respectively, in dilazep-treated HEK293 cells. Interestingly, HEK293 cells with both functional human equilibrative nucleoside transporters and hCNT3 displayed 5% of (3)H-gemcitabine uptake observed in cells with only functional hCNT3, suggesting that equilibrative nucleoside transporters caused significant efflux of (3)H-gemcitabine. Efflux assays confirmed that dilazep could inhibit the majority of (3)H-gemcitabine efflux from HEK293 cells, suggesting that hENTs were responsible for the majority of efflux from the tested cells. Oocyte uptake transport assays were also performed and provided support for our hypothesis. Gemcitabine uptake and efflux assays were also performed on pancreatic cancer AsPC-1 and MIA PaCa-2 cells with similar results to that of HEK293 cells. Using the MTS proliferation assay, dilazep-treated HEK293 cells demonstrated 13-fold greater resistance to gemcitabine compared to dilazep-untreated HEK293 cells and this resistance could be reversed by transfection of hCNT3 cDNA. We propose that transfection of hCNT3 cDNA using ultrasound and microbubbles may be a

  13. Biotechnologies and Human Dignity

    Science.gov (United States)

    Sweet, William; Masciulli, Joseph

    2011-01-01

    In this article, the authors review some contemporary cases where biotechnologies have been employed, where they have had global implications, and where there has been considerable debate. The authors argue that the concept of dignity, which lies at the center of such documents as the 2005 Universal Declaration on Bioethics and Human Rights, the…

  14. Designers of Human Settlements

    Science.gov (United States)

    Cliff, Ursula

    1976-01-01

    Reviewed herein are the ideas of nine men who have addressed themselves to the problems of human settlements in this century. The ideas reviewed include those of Arnold Toynbee, Lewis Mumford, Hassan Fathy, Buckminster Fuller, Constantinos Doxiadis, Charles Correa, Paul Mwaluko, Robert McNamara and John F. C. Turner. (BT)

  15. Conceptualizations of Human Environments

    Science.gov (United States)

    Moos, Rudolf H.

    1973-01-01

    Presents six major methods by which characteristics of environments have been related to indexes of human functioning: (1) ecological dimensions; (2) behavior settings; (3) dimensions of organizational structure; and, (4) dimensions identifying the collective personal and/or behavioral characteristics of the milieu inhabitants; and two others.…

  16. Hauntings of Human Nature

    DEFF Research Database (Denmark)

    Clasen, Mathias

    2017-01-01

    The central conflicts of Stephen King’s horror novel The Shining are rooted in human nature and reflect evolutionarily recurrent adaptive problems—the problem of balancing conflicting evolved motives, such as motives for selfish status striving versus motives for affiliative nurturing behavior...

  17. Radar: Human Safety Net

    Science.gov (United States)

    Ritz, John M.

    2016-01-01

    Radar is a technology that can be used to detect distant objects not visible to the human eye. A predecessor of radar, called the telemobiloscope, was first used to detect ships in the fog in 1904 off the German coast. Many scientists have worked on the development and refinement of radar (Hertz with electromagnetic waves; Popov with determining…

  18. Human Influenza Virus Infections.

    Science.gov (United States)

    Peteranderl, Christin; Herold, Susanne; Schmoldt, Carole

    2016-08-01

    Seasonal and pandemic influenza are the two faces of respiratory infections caused by influenza viruses in humans. As seasonal influenza occurs on an annual basis, the circulating virus strains are closely monitored and a yearly updated vaccination is provided, especially to identified risk populations. Nonetheless, influenza virus infection may result in pneumonia and acute respiratory failure, frequently complicated by bacterial coinfection. Pandemics are, in contrary, unexpected rare events related to the emergence of a reassorted human-pathogenic influenza A virus (IAV) strains that often causes increased morbidity and spreads extremely rapidly in the immunologically naive human population, with huge clinical and economic impact. Accordingly, particular efforts are made to advance our knowledge on the disease biology and pathology and recent studies have brought new insights into IAV adaptation mechanisms to the human host, as well as into the key players in disease pathogenesis on the host side. Current antiviral strategies are only efficient at the early stages of the disease and are challenged by the genomic instability of the virus, highlighting the need for novel antiviral therapies targeting the pulmonary host response to improve viral clearance, reduce the risk of bacterial coinfection, and prevent or attenuate acute lung injury. This review article summarizes our current knowledge on the molecular basis of influenza infection and disease progression, the key players in pathogenesis driving severe disease and progression to lung failure, as well as available and envisioned prevention and treatment strategies against influenza virus infection.

  19. Narratology beyond the Human

    Directory of Open Access Journals (Sweden)

    David Herman

    2014-12-01

    Full Text Available This essay uses Lauren Groff’s 2011 short story “Above and Below” to explore aspects of a narratology beyond the human, considering how ideas developed by scholars of narrative bear on questions about the nature and scope of human-animal relationships in the larger biosphere. Bringing Groff’s text into dialogue with the concept of “self-narratives” as developed by Kenneth J. Gergen and Mary M. Gergen, anthropological research on the ontologies projected by the members of different cultures, and ideas from literary narratology, I discuss how the structure and narration of Groff’s story reveal a fault line between two competing ontologies in the culture of modernity, one parsimonious and the other prolific when it comes to allocating possibilities for selfhood across species lines. More generally, in addition to illuminating how a given self-narrative locates the human agent in a transspecies constellation of selves, a narratology beyond the human can assist with the construction of new, more sustainable individual and collective self-narratives that situate the self within wider webs of creatural life.

  20. Communicating Humanism Nonverbally.

    Science.gov (United States)

    Hillison, John

    1983-01-01

    Discusses the importance of nonverbal communication by counselors in expressing humanistic feeling. Notes that facial expression (i.e., smiling) provides immediate feedback to the observer; use of space (i.e., close proximity) communicates warmth and humaneness; and tone of voice can complement spoken words and give them more meaning. (WAS)

  1. Healthy human gut phageome

    NARCIS (Netherlands)

    Manrique, Pilar; Bolduc, Benjamin; Walk, Seth T.; Oost, van der John; Vos, de Willem M.; Young, Mark J.

    2016-01-01

    The role of bacteriophages in influencing the structure and function of the healthy human gut microbiome is unknown. With few exceptions, previous studies have found a high level of heterogeneity in bacteriophages from healthy individuals. To better estimate and identify the shared phageome of hu

  2. Human Power Empirically Explored

    NARCIS (Netherlands)

    Jansen, A.J.

    2011-01-01

    Harvesting energy from the users’ muscular power to convert this into electricity is a relatively unknown way to power consumer products. It nevertheless offers surprising opportunities for product designers; human-powered products function independently from regular power infrastructure, are conven

  3. Disability and Human Supports

    Directory of Open Access Journals (Sweden)

    Jeff McNair

    2015-01-01

    Full Text Available This article provides a brief overview of models of disability growing out of the field of disability studies and leading to a call for interventions going beyond a simply medical model approach. A brief discussion of human supports/services is provided such that readers engaged in the development of services/supports can base them on best principles.

  4. "Healthy" Human Development Indices

    Science.gov (United States)

    Engineer, Merwan; Roy, Nilanjana; Fink, Sari

    2010-01-01

    In the Human Development Index (HDI), life expectancy is the only indicator used in modeling the dimension "a long and healthy life". Whereas life expectancy is a direct measure of quantity of life, it is only an indirect measure of healthy years lived. In this paper we attempt to remedy this omission by introducing into the HDI the morbidity…

  5. Human thimet oligopeptidase.

    Science.gov (United States)

    Dando, P M; Brown, M A; Barrett, A J

    1993-01-01

    We have purified human thimet oligopeptidase to homogeneity from erythrocytes, and compared it with the enzyme from rat testis and chicken liver. An antiserum raised against rat thimet oligopeptidase also recognized the human and chicken enzymes, suggesting that the structure of the enzyme has been strongly conserved in evolution. Consistent with this, the properties of the human enzyme were very similar to those for the other species. Thus human thimet oligopeptidase also is a thiol-dependent metallo-oligopeptidase with M(r) about 75,000. Specificity for cleavage of a number of peptides was indistinguishable from that of the rat enzyme, but Ki values for the four potent reversible inhibitors tested were lower. In discussing the results, we consider the determinants of the complex substrate specificity of thimet oligopeptidase. We question whether substrates containing more than 17 amino acid residues are cleaved, as has been suggested. We also point out that the favourable location of a proline residue and a free C-terminus in the substrate may be as important as the hydrophobic residues in the P2, P1 and P3' positions that have been emphasized in the past. Images Figure 1 PMID:8373360

  6. Human automation integration

    NARCIS (Netherlands)

    Barnes, M.; Cosenzo, K.; Galster, s.; Hollnagel, E.; Miller, C.; Parasuraman, R.; Reising, J.; Taylor, R.; Breda, L. van

    2007-01-01

    Many versions of future concept of operations (CONOPS) rely heavily on UMVs. The pressure to take the human out of immediate control of these vehicles is being driven by several factors. These factors include a reduction in cost for the production and maintenance of the vehicle, operational viabilit

  7. Humanizing science education

    Science.gov (United States)

    Donnelly, James F.

    2004-09-01

    This paper argues that the diverse curriculum reform agendas associated with science education are strongly and critically associated with the educational characteristics of the humanities. The article begins with a survey of interpretations of the distinctive contribution which the humanities make to educational purposes. From this survey four general characteristics of the humanities are identified: an appeal to an autonomous self with the right and capacity to make independent judgements and interpretations; indeterminacy in the subject matter of these judgements and interpretations; a focus on meaning, in the context of human responses, actions, and relationships, and especially on the ethical, aesthetic, and purposive; and finally, the possibility of commonality in standards of judgement and interpretation, under conditions of indeterminacy. Inquiry and science technology and society (STS) orientated curriculum development agendas within science education are explored in the light of this analysis. It is argued that the four characteristics identified are central to the educational purposes of these and other less prominent modes of curriculum development in science, though not unproblematically so. In the light of this discussion the prognosis and challenges for science curriculum development are explored.

  8. Selenium and Human Health

    Directory of Open Access Journals (Sweden)

    M Abedi

    2013-04-01

    Full Text Available Introduction: Selenium is an essential element for human health and it is toxic at high concentrations. Selenium is a constituent component of selenoproteins that have enzymatic and structural roles in human biochemistry. Selenium is a best antioxidant and catalyst for production of thyroid hormone. This element has the key role in the immune function; prevention of AIDS progression and the deactivity of toxins. Furthermore, selenium is essential for sperm motility and can reduce abortions. Selenium deficiency was also associated with adverse mood states. The findings regarding cardiovascular disease risk related to selenium deficiency is unclear, though other conditions such as vascular inflammation, oxidative stress and selenium deficiency can cause this disease too. Moreover, consuming of 60 mg of selenium per day may be associated with reduction of cancer risk. In this study, a review of studies has been performed on the biochemical function of selenium toxicity, and its effects on human health. Furthermore, certain identified cancers associated with selenium have been discussed to absorb more attention to the status of this element and also as a guide for further studies. Selenium plays the dual character (useful and harmful in human health, and then it is necessary to determine the concentration of this element in body fluids and tissues. An appropriate method for routine measurement of selenium in clinical laboratories is electro thermal atomic absorption spectrometry (ETAAS with very low detection limit and good precision.

  9. Humanism in Education

    Science.gov (United States)

    Armstrong, Michael

    2015-01-01

    This is the text of Michael Armstrong's address to the Brian Simon Centenary conference, held at the Institute of Education on 26 March 2015. Michael Armstrong celebrates the humanism that underlay Brian's belief in a common system of education, democratic and non-selective, and finds its counterpart in the creative practice of school children.

  10. Haptocorrin in humans

    DEFF Research Database (Denmark)

    Mørkbak, Anne Louise; Nexo, Ebba; Poulsen, Steen Seier

    2007-01-01

    knowledge concerning its function and its distribution in adult and foetal life is limited. In this study, we present data on the tissue expression of haptocorrin and on the relation between analogues on haptocorrin and vitamin B(12) status in humans. Methods: Polyclonal antibodies towards haptocorrin were...

  11. Strengthening Career Human Agency

    Science.gov (United States)

    Chen, Charles P.

    2006-01-01

    Rooted in A. Bandura's (1982, 2001b) social cognitive theory, the notion of human agency has received considerable attention in vocational and career psychology for the last 2 decades, especially with the recent emergence of social constructivist thinking in the field. This article continues in the same direction. In reviewing the notion of human…

  12. Humanizing the Secondary School.

    Science.gov (United States)

    Hamilton, Norman K., Ed.; Saylor, J. Galen, Ed.

    These papers, presented during ASCD-sponsored conference, confront educators with issues in and alternatives for making secondary schools a more humanizing experience for students. The contributors and their articles are: Norman K. Hamilton, "Alternatives in Secondary Education"; Thornton B. Monez and Norman L. Bussiere, "The High School in Human…

  13. Cultivating human nature

    NARCIS (Netherlands)

    Derksen, Maarten

    2007-01-01

    Evolutionary psychology claims to offer a unified perspective on human nature and culture, which can serve to further the integration of psychology and the social sciences. I describe four approaches to evolutionary psychology, and note increasing attention to the agency of the individual in constru

  14. Antihumanism in the Humanities.

    Science.gov (United States)

    Schwartz, Joel

    1990-01-01

    Analyzes the antihumanistic elements of Jacques Derrida's theory of deconstruction. Argues that the modern French intellectuals, including Foucault, Derrida, and Lacan, have had an antihumanistic effect on the American social sciences and humanities by rejecting the existence of truth, morality, and rationality. (FMW)

  15. Learning to Be Human

    Science.gov (United States)

    Macmurray, John

    2012-01-01

    This article presents "Learning to be Human", which John Macmurray delivered on 5 May 1958 as the annual public lecture at Moray House College of Education, now part of Edinburgh University. The key themes of the paper are ones to which Macmurray returned again and again in both his educational and his philosophical writing for over 40 years and…

  16. Human social genomics.

    Directory of Open Access Journals (Sweden)

    Steven W Cole

    2014-08-01

    Full Text Available A growing literature in human social genomics has begun to analyze how everyday life circumstances influence human gene expression. Social-environmental conditions such as urbanity, low socioeconomic status, social isolation, social threat, and low or unstable social status have been found to associate with differential expression of hundreds of gene transcripts in leukocytes and diseased tissues such as metastatic cancers. In leukocytes, diverse types of social adversity evoke a common conserved transcriptional response to adversity (CTRA characterized by increased expression of proinflammatory genes and decreased expression of genes involved in innate antiviral responses and antibody synthesis. Mechanistic analyses have mapped the neural "social signal transduction" pathways that stimulate CTRA gene expression in response to social threat and may contribute to social gradients in health. Research has also begun to analyze the functional genomics of optimal health and thriving. Two emerging opportunities now stand to revolutionize our understanding of the everyday life of the human genome: network genomics analyses examining how systems-level capabilities emerge from groups of individual socially sensitive genomes and near-real-time transcriptional biofeedback to empirically optimize individual well-being in the context of the unique genetic, geographic, historical, developmental, and social contexts that jointly shape the transcriptional realization of our innate human genomic potential for thriving.

  17. Assessment of human exposures

    Energy Technology Data Exchange (ETDEWEB)

    Lebret, E. [RIVM-National Inst. of Public Health and Environmental Protection (Netherlands)

    1995-12-31

    This article describes some of the features of the assessment of human exposure to environmental pollutants in epidemiological studies. Since exposure assessment in air pollution epidemiology studies typically involve professionals from various backgrounds, interpretation of a concepts like `exposure` may vary. A brief descriptions is therefore given by way of introduction

  18. Human Memory: The Basics

    Science.gov (United States)

    Martinez, Michael E.

    2010-01-01

    The human mind has two types of memory: short-term and long-term. In all types of learning, it is best to use that structure rather than to fight against it. One way to do that is to ensure that learners can fit new information into patterns that can be stored in and more easily retrieved from long-term memory.

  19. Computational human body models

    NARCIS (Netherlands)

    Wismans, J.S.H.M.; Happee, R.; Dommelen, J.A.W. van

    2005-01-01

    Computational human body models are widely used for automotive crashsafety research and design and as such have significantly contributed to a reduction of traffic injuries and fatalities. Currently crash simulations are mainly performed using models based on crash-dummies. However crash dummies dif

  20. Predictors of human rotation.

    Science.gov (United States)

    Stochl, Jan; Croudace, Tim

    2013-01-01

    Why some humans prefer to rotate clockwise rather than anticlockwise is not well understood. This study aims to identify the predictors of the preferred rotation direction in humans. The variables hypothesised to influence rotation preference include handedness, footedness, sex, brain hemisphere lateralisation, and the Coriolis effect (which results from geospatial location on the Earth). An online questionnaire allowed us to analyse data from 1526 respondents in 97 countries. Factor analysis showed that the direction of rotation should be studied separately for local and global movements. Handedness, footedness, and the item hypothesised to measure brain hemisphere lateralisation are predictors of rotation direction for both global and local movements. Sex is a predictor of the direction of global rotation movements but not local ones, and both sexes tend to rotate clockwise. Geospatial location does not predict the preferred direction of rotation. Our study confirms previous findings concerning the influence of handedness, footedness, and sex on human rotation; our study also provides new insight into the underlying structure of human rotation movements and excludes the Coriolis effect as a predictor of rotation.

  1. Parasites and human evolution.

    Science.gov (United States)

    Perry, George H

    2014-01-01

    Our understanding of human evolutionary and population history can be advanced by ecological and evolutionary studies of our parasites. Many parasites flourish only in the presence of very specific human behaviors and in specific habitats, are wholly dependent on us, and have evolved with us for thousands or millions of years. Therefore, by asking when and how we first acquired those parasites, under which environmental and cultural conditions we are the most susceptible, and how the parasites have evolved and adapted to us and we in response to them, we can gain considerable insight into our own evolutionary history. As examples, the tapeworm life cycle is dependent on our consumption of meat, the divergence of body and head lice may have been subsequent to the development of clothing, and malaria hyperendemicity may be associated with agriculture. Thus, the evolutionary and population histories of these parasites are likely intertwined with critical aspects of human biology and culture. Here I review the mechanics of these and multiple other parasite proxies for human evolutionary history and discuss how they currently complement our fossil, archeological, molecular, linguistic, historical, and ethnographic records. I also highlight potential future applications of this promising model for the field of evolutionary anthropology.

  2. Human-Centered Aspects

    NARCIS (Netherlands)

    Kulyk, O.; Kosara, R.; Urquiza, J.; Wassink, I.; Kerren, A.; Ebert, A.; Meyer, J.

    2007-01-01

    Humans have remarkable perceptual capabilities. These capabilities are heavily underestimated in current visualizations. Often, this is due to the lack of an in-depth user study to set the requirements for optimal visualizations. The designer does not understand what kind of information should be vi

  3. Ubiquitous Human Computing

    OpenAIRE

    Zittrain, Jonathan L.

    2008-01-01

    Ubiquitous computing means network connectivity everywhere, linking devices and systems as small as a thumb tack and as large as a worldwide product distribution chain. What could happen when people are so readily networked? This short essay explores issues arising from two possible emerging models of ubiquitous human computing: fungible networked brainpower and collective personal vital sign monitoring.

  4. Human herpesviruses and MS

    DEFF Research Database (Denmark)

    Christensen, Tove

    2007-01-01

    Environmental factors operate on a background of genetic susceptibility in MS pathogenesis; the human herpesviruses (HHV) are likely candidates for such factors. HHV share a number of properties: they are almost ubiquitous, they are highly prevalent worldwide, they all cause latent infections...

  5. Human Learning and Memory

    Science.gov (United States)

    Lieberman, David A.

    2012-01-01

    This innovative textbook is the first to integrate learning and memory, behaviour, and cognition. It focuses on fascinating human research in both memory and learning (while also bringing in important animal studies) and brings the reader up to date with the latest developments in the subject. Students are encouraged to think critically: key…

  6. Human-Robot Interaction

    Science.gov (United States)

    Sandor, Aniko; Cross, E. Vincent, II; Chang, Mai Lee

    2015-01-01

    Human-robot interaction (HRI) is a discipline investigating the factors affecting the interactions between humans and robots. It is important to evaluate how the design of interfaces affect the human's ability to perform tasks effectively and efficiently when working with a robot. By understanding the effects of interface design on human performance, workload, and situation awareness, interfaces can be developed to appropriately support the human in performing tasks with minimal errors and with appropriate interaction time and effort. Thus, the results of research on human-robot interfaces have direct implications for the design of robotic systems. For efficient and effective remote navigation of a rover, a human operator needs to be aware of the robot's environment. However, during teleoperation, operators may get information about the environment only through a robot's front-mounted camera causing a keyhole effect. The keyhole effect reduces situation awareness which may manifest in navigation issues such as higher number of collisions, missing critical aspects of the environment, or reduced speed. One way to compensate for the keyhole effect and the ambiguities operators experience when they teleoperate a robot is adding multiple cameras and including the robot chassis in the camera view. Augmented reality, such as overlays, can also enhance the way a person sees objects in the environment or in camera views by making them more visible. Scenes can be augmented with integrated telemetry, procedures, or map information. Furthermore, the addition of an exocentric (i.e., third-person) field of view from a camera placed in the robot's environment may provide operators with the additional information needed to gain spatial awareness of the robot. Two research studies investigated possible mitigation approaches to address the keyhole effect: 1) combining the inclusion of the robot chassis in the camera view with augmented reality overlays, and 2) modifying the camera

  7. Human mammary microenvironment better regulates the biology of human breast cancer in humanized mouse model.

    Science.gov (United States)

    Zheng, Ming-Jie; Wang, Jue; Xu, Lu; Zha, Xiao-Ming; Zhao, Yi; Ling, Li-Jun; Wang, Shui

    2015-02-01

    During the past decades, many efforts have been made in mimicking the clinical progress of human cancer in mouse models. Previously, we developed a human breast tissue-derived (HB) mouse model. Theoretically, it may mimic the interactions between "species-specific" mammary microenvironment of human origin and human breast cancer cells. However, detailed evidences are absent. The present study (in vivo, cellular, and molecular experiments) was designed to explore the regulatory role of human mammary microenvironment in the progress of human breast cancer cells. Subcutaneous (SUB), mammary fat pad (MFP), and HB mouse models were developed for in vivo comparisons. Then, the orthotopic tumor masses from three different mouse models were collected for primary culture. Finally, the biology of primary cultured human breast cancer cells was compared by cellular and molecular experiments. Results of in vivo mouse models indicated that human breast cancer cells grew better in human mammary microenvironment. Cellular and molecular experiments confirmed that primary cultured human breast cancer cells from HB mouse model showed a better proliferative and anti-apoptotic biology than those from SUB to MFP mouse models. Meanwhile, primary cultured human breast cancer cells from HB mouse model also obtained the migratory and invasive biology for "species-specific" tissue metastasis to human tissues. Comprehensive analyses suggest that "species-specific" mammary microenvironment of human origin better regulates the biology of human breast cancer cells in our humanized mouse model of breast cancer, which is more consistent with the clinical progress of human breast cancer.

  8. Making Human Beings Human: Bioecological Perspectives on Human Development. The SAGE Program on Applied Developmental Science

    Science.gov (United States)

    Bronfenbrenner, Urie, Ed.

    2004-01-01

    To a greater extent than any other species, human beings create the environments that, in turn, shape their own development. This book endeavors to demonstrate that human beings can also develop those environments to optimize their most constructive genetic potentials. What makes human beings human, therefore, is both the potential to shape their…

  9. Helicopter Human Factors

    Science.gov (United States)

    Hart, Sandra G.; Sridhar, Banavar (Technical Monitor)

    1995-01-01

    Even under optimal conditions, helicopter flight is a most demanding form of human-machine interaction, imposing continuous manual, visual, communications, and mental demands on pilots. It is made even more challenging by small margins for error created by the close proximity of terrain in NOE flight and missions flown at night and in low visibility. Although technology advances have satisfied some current and proposed requirements, hardware solutions alone are not sufficient to ensure acceptable system performance and pilot workload. However, human factors data needed to improve the design and use of helicopters lag behind advances in sensor, display, and control technology. Thus, it is difficult for designers to consider human capabilities and limitations when making design decisions. This results in costly accidents, design mistakes, unrealistic mission requirements, excessive training costs, and challenge human adaptability. NASA, in collaboration with DOD, industry, and academia, has initiated a program of research to develop scientific data bases and design principles to improve the pilot/vehicle interface, optimize training time and cost, and maintain pilot workload and system performance at an acceptable level. Work performed at Ames, and by other research laboratories, will be reviewed to summarize the most critical helicopter human factors problems and the results of research that has been performed to: (1) Quantify/model pilots use of visual cues for vehicle control; (2) Improve pilots' performance with helmet displays of thermal imagery and night vision goggles for situation awareness and vehicle control; (3) Model the processes by which pilots encode maps and compare them to the visual scene to develop perceptually and cognitively compatible electronic map formats; (4) Evaluate the use of spatially localized auditory displays for geographical orientation, target localization, radio frequency separation; (5) Develop and flight test control

  10. The science of unitary human beings and interpretive human science.

    Science.gov (United States)

    Reeder, F

    1993-01-01

    Natural science and human science are identified as the bases of most nursing theories and research programs. Natural science has been disclaimed by Martha Rogers as the philosophy of science that undergirds her work. The question remains, is the science of unitary human beings an interpretive human science? The author explores the works of Rogers through a dialectic with two human scientists' works. Wilhelm Dilthey's works represent the founding or traditional view, and Jurgen Habermas' works represent a contemporary, reconstructionist view. The ways Rogerian thought contributes to human studies but is distinct from traditional and reconstructionist human sciences are illuminated.

  11. Digitalization of the human mind

    Directory of Open Access Journals (Sweden)

    Mr.Sc. Drita Mehmeti

    2013-06-01

    Full Text Available The human faces with various problems already in its first steps in live, and carriers of such life situations are found in various ages which bring new currents in the way of life. Starting from the ancient Greek thought, the human and its mind made the centre of the world, already orienting the Western thought towards the study of the human mind (namely human reason, since it made the key tool for human survival. Although human problems have been discussed throughout various ages, they have not been able to resolve in full the human problems, and therefore, the same issues were taken by the representatives of the socalled “critical theory”, who used the theory to criticize the way of live Western civilization was offering, known as digitalization of the human mind. The human problems are addressed in a poly-dimensional manner. The factors affecting the human mind are: industrial civilization, technical progress, automation, overtly influence of machinery on humans, substitution of cultural values, which in sum have developed a new World Order, where the ruler is technology. In the modern world, the human fails to recognize himself, since he is out of himself and lives according to the rules set forth by the “remote control”. In the flow of this kind of livelihood, human alienates, or in other words, the human goes out of himself, trying to adapt maximally to the requirements of the new way of life.

  12. Human Integration Design Processes (HIDP)

    Science.gov (United States)

    Boyer, Jennifer

    2014-01-01

    The purpose of the Human Integration Design Processes (HIDP) document is to provide human-systems integration design processes, including methodologies and best practices that NASA has used to meet human systems and human rating requirements for developing crewed spacecraft. HIDP content is framed around human-centered design methodologies and processes in support of human-system integration requirements and human rating. NASA-STD-3001, Space Flight Human-System Standard, is a two-volume set of National Aeronautics and Space Administration (NASA) Agency-level standards established by the Office of the Chief Health and Medical Officer, directed at minimizing health and performance risks for flight crews in human space flight programs. Volume 1 of NASA-STD-3001, Crew Health, sets standards for fitness for duty, space flight permissible exposure limits, permissible outcome limits, levels of medical care, medical diagnosis, intervention, treatment and care, and countermeasures. Volume 2 of NASASTD- 3001, Human Factors, Habitability, and Environmental Health, focuses on human physical and cognitive capabilities and limitations and defines standards for spacecraft (including orbiters, habitats, and suits), internal environments, facilities, payloads, and related equipment, hardware, and software with which the crew interfaces during space operations. The NASA Procedural Requirements (NPR) 8705.2B, Human-Rating Requirements for Space Systems, specifies the Agency's human-rating processes, procedures, and requirements. The HIDP was written to share NASA's knowledge of processes directed toward achieving human certification of a spacecraft through implementation of human-systems integration requirements. Although the HIDP speaks directly to implementation of NASA-STD-3001 and NPR 8705.2B requirements, the human-centered design, evaluation, and design processes described in this document can be applied to any set of human-systems requirements and are independent of reference

  13. The effects of human resource flexibility on human resources development

    Directory of Open Access Journals (Sweden)

    SeidMehdi Veise

    2014-08-01

    Full Text Available Human resources are the primary factor for development of competitiveness and innovation and reaching competitive advantage and they try to improve corporate capabilities through various characteristics such as value creation, scarcity and difficulty of imitation. This paper investigates the effect of human resource flexibility and its dimensions on human resource development and its dimensions. The survey was conducted using descriptive-correlation method that intended to describe how human resource flexibility was effective on human resource development. Questionnaire was tool of data collection. The statistical population included one hundred employees of the Electric Company in Ilam province, thus census method was used. Reliability of the questionnaire was measured via Cronbach's alpha equal to 0.96. The findings revealed that flexibility and its dimensions were effective on human resource development and dimensions of it. As a result, human resource flexibility should be considered for development of human resources and employees with the highest flexibility should be selected.

  14. Survey Relationship between Human Resources Roles and Human Resources Competencies

    Directory of Open Access Journals (Sweden)

    Hasan Darvish

    2012-09-01

    Full Text Available This study evaluates relationship between Human resources roles and Human resources competencies in Iranian Petroleum Company. For this study, we were looking for answers to these questions: What are the new required Human Resources competencies For Contemporary organizations? And For Gain these competencies what roles should be played by Human Resources? The study had one main hypothesis and four minor hypotheses. Research method was descriptive, and regression and correlation tests were used to determine the relationship between variables. The populations of this study were managers of Iranian Petroleum Company. This Research showed that Human resources roles have significant effect on Human resources competencies; Strategic partner, Employee champion, and Change agent had significant relationship with all of Human resource competencies; Administrative expert had not significant relationship with none of the Human resource competencies.

  15. Serotonin in human skin

    Institute of Scientific and Technical Information of China (English)

    Jianguo Huang; Qiying Gong; Guiming Li

    2005-01-01

    In this review the authors summarize data of a potential role for serotonin in human skin physiology and pathology. The uncovering of endogenous serotonin synthesis and its transformation to melatonin underlines a putative important role of this pathway in melanocyte physiology and pathology. Pathways of the biosynthesis and biodegradation of serotonin have been characterized in human beings and its major cellular populations. Moreover, receptors of serotonin are expressed on keratinocytes, melanocytes, and fibroblasts and these mediate phenotypic actions on cellular proliferation and differentiation. And the widespread expression of a cutaneous seorotoninergic system indicates considerable selectivity of action to facilitate intra-, auto-, or paracrine mechanisms that define and influence skin function in a highly compartmentalized manner. Melatonin, in turn, can also act as a hormone, neurotransmitter, cytokine, biological modifier and immunomodulator. Thus, Serotonin local synthesis and cellular localization could thus become of great importance in the diagnosis and management of cutaneous pathology.

  16. Posthumanism: beyond humanism?

    Science.gov (United States)

    Valera, Luca

    2014-01-01

    The focal point of posthumanism consists not as such in an a-critical acceptance of the technological promises - like there is for transhumanism - but in a total contamination and hybridization of human beings with other living beings and machines (these are the two main forms of contamination). The change of perspective untaken by posthumanism would be, thus, a paradigmatic shift in anthropology. As with ecologism, posthumanism, in order to obtain total contamination and man's openness to otherness, proposes the elimination and the fluidification of boundaries, thus even denying man's identity, and, with it, the very possibility of openness. However, by denying the identity, one denies the condition of possibility of thought, just as it has been manifested in history until now: hence we understand how, primarily, posthumanism is not configured as an adequate philosophical reflection, but as a narrative that takes origin from certain requirements, which are eminently human, and that discloses its deeply anthropogenic roots.

  17. Human-Forest Relationships

    DEFF Research Database (Denmark)

    Ritter, Eva; Dauksta, D.

    2012-01-01

    The relationship between human beings and forests has been important for the development of society. It is based on various productive, ecological, social and cultural functions of forests. The cultural functions, including the spiritual and symbolic role of forests, are often not addressed...... problems. To achieve a deeper understanding of the dependency of society on forests, it is necessary to recognise the role of forests in our consciousness of being human. Giving a historical overview about the cultural bonds between people and forests, the first part of the paper puts focus on non-productive...... with the same attention as the other functions. The aim of this paper is to put a stronger emphasis on the fact that the acknowledgement of cultural bonds is needed in the discussion of sustainable development. Forest should not only be considered as a technical means to solve environmental and economic...

  18. Human spinal motor control

    DEFF Research Database (Denmark)

    Nielsen, Jens Bo

    2016-01-01

    interneurons and exert a direct (willful) muscle control with the aid of a context-dependent integration of somatosensory and visual information at cortical level. However, spinal networks also play an important role. Sensory feedback through spinal circuitries is integrated with central motor commands...... and contributes importantly to the muscle activity underlying voluntary movements. Regulation of spinal interneurons is used to switch between motor states such as locomotion (reciprocal innervation) and stance (coactivation pattern). Cortical regulation of presynaptic inhibition of sensory afferents may focus...... the central motor command by opening or closing sensory feedback pathways. In the future, human studies of spinal motor control, in close collaboration with animal studies on the molecular biology of the spinal cord, will continue to document the neural basis for human behavior. Expected final online...

  19. Ancient human microbiomes.

    Science.gov (United States)

    Warinner, Christina; Speller, Camilla; Collins, Matthew J; Lewis, Cecil M

    2015-02-01

    Very recently, we discovered a vast new microbial self: the human microbiome. Our native microbiota interface with our biology and culture to influence our health, behavior, and quality of life, and yet we know very little about their origin, evolution, or ecology. With the advent of industrialization, globalization, and modern sanitation, it is intuitive that we have changed our relationship with microbes, but we have little information about the ancestral state of our microbiome, and we therefore lack a foundation for characterizing this change. High-throughput sequencing has opened up new opportunities in the field of paleomicrobiology, allowing us to investigate the evolution of the complex microbial ecologies that inhabit our bodies. By focusing on recent coprolite and dental calculus research, we explore how emerging research on ancient human microbiomes is changing the way we think about ancient disease and how archaeological studies can contribute to a medical understanding of health and nutrition today.

  20. Human Work Interaction Design

    DEFF Research Database (Denmark)

    Lopes, Arminda; Ørngreen, Rikke

    This book constitutes the thoroughly refereed post-conference proceedings of the Third IFIP WG 13.6 Working Conference on Human Work Interaction Design, HWID 2012, held in Copenhagen, Denmark, in December 2012. The 16 revised papers presented were carefully selected for inclusion in this volume. ......, and mobile probing. They have been organized in the following topical sections: work analysis: dimensions and methods; interactions, models and approaches; and evaluations, interactions and applications.......This book constitutes the thoroughly refereed post-conference proceedings of the Third IFIP WG 13.6 Working Conference on Human Work Interaction Design, HWID 2012, held in Copenhagen, Denmark, in December 2012. The 16 revised papers presented were carefully selected for inclusion in this volume....... The papers reflect many different areas and address many complex and diverse work domains, ranging from medical user interfaces, work and speech interactions at elderly care facilities, greenhouse climate control, navigating through large oil industry engineering models, crisis management, library usability...

  1. Is human fecundity changing?

    DEFF Research Database (Denmark)

    Smarr, Melissa M; Sapra, Katherine J; Gemmill, Alison

    2017-01-01

    Fecundity, the biologic capacity to reproduce, is essential for the health of individuals and is, therefore, fundamental for understanding human health at the population level. Given the absence of a population (bio)marker, fecundity is assessed indirectly by various individual-based (e.g. semen...... quality, ovulation) or couple-based (e.g. time-to-pregnancy) endpoints. Population monitoring of fecundity is challenging, and often defaults to relying on rates of births (fertility) or adverse outcomes such as genitourinary malformations and reproductive site cancers. In light of reported declines...... in semen quality and fertility rates in some global regions among other changes, the question as to whether human fecundity is changing needs investigation. We review existing data and novel methodological approaches aimed at answering this question from a transdisciplinary perspective. The existing...

  2. Hyaluronan in human malignancies

    Energy Technology Data Exchange (ETDEWEB)

    Sironen, R.K. [Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio (Finland); Department of Pathology, Kuopio University Hospital, P.O. Box 1777, FI-70211 Kuopio (Finland); Tammi, M.; Tammi, R. [Institute of Biomedicine, Anatomy, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio (Finland); Auvinen, P.K. [Department of Oncology, Kuopio University Hospital, P.O. Box 1777, FI-70211 Kuopio (Finland); Anttila, M. [Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio (Finland); Department of Gynecology and Obstetrics, Kuopio University Hospital, P.O. Box 1777, FI-70211 Kuopio (Finland); Kosma, V-M., E-mail: Veli-Matti.Kosma@uef.fi [Institute of Clinical Medicine, Pathology and Forensic Medicine, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio (Finland); Department of Pathology, Kuopio University Hospital, P.O. Box 1777, FI-70211 Kuopio (Finland)

    2011-02-15

    Hyaluronan, a major macropolysaccharide in the extracellular matrix of connective tissues, is intimately involved in the biology of cancer. Hyaluronan accumulates into the stroma of various human tumors and modulates intracellular signaling pathways, cell proliferation, motility and invasive properties of malignant cells. Experimental and clinicopathological evidence highlights the importance of hyaluronan in tumor growth and metastasis. A high stromal hyaluronan content is associated with poorly differentiated tumors and aggressive clinical behavior in human adenocarcinomas. Instead, the squamous cell carcinomas and malignant melanomas tend to have a reduced hyaluronan content. In addition to the stroma-cancer cell interaction, hyaluronan can influence stromal cell recruitment, tumor angiogenesis and epithelial-mesenchymal transition. Hyaluronan receptors, hyaluronan synthases and hyaluronan degrading enzymes, hyaluronidases, are involved in the modulation of cancer progression, depending on the tumor type. Furthermore, intracellular signaling and angiogenesis are affected by the degradation products of hyaluronan. Hyaluronan has also therapeutic implications since it is involved in multidrug resistance.

  3. Strategies of Human Mating

    Directory of Open Access Journals (Sweden)

    David M. Buss

    2006-12-01

    Full Text Available Modern humans have inherited the mating strategies that led to the success of their ancestors. These strategies include long-term mating, short-term mating, extra-pair mating, mate poaching, and mate guarding. This article presents empirical evidence supporting evolution-based hypotheses about the complexities of these mating strategies. Since men and women historically confronted different adaptive problems in the mating domain, the sexes differ profoundly in evolved strategic solutions. These differences include possessing different mate preferences, different desires for short-term mating, and differences in the triggers that evoke sexual jealousy. The study of human mating is one of the “success stories” of evolutionary psychology.

  4. Fractionating human intelligence.

    Science.gov (United States)

    Hampshire, Adam; Highfield, Roger R; Parkin, Beth L; Owen, Adrian M

    2012-12-20

    What makes one person more intellectually able than another? Can the entire distribution of human intelligence be accounted for by just one general factor? Is intelligence supported by a single neural system? Here, we provide a perspective on human intelligence that takes into account how general abilities or "factors" reflect the functional organization of the brain. By comparing factor models of individual differences in performance with factor models of brain functional organization, we demonstrate that different components of intelligence have their analogs in distinct brain networks. Using simulations based on neuroimaging data, we show that the higher-order factor "g" is accounted for by cognitive tasks corecruiting multiple networks. Finally, we confirm the independence of these components of intelligence by dissociating them using questionnaire variables. We propose that intelligence is an emergent property of anatomically distinct cognitive systems, each of which has its own capacity.

  5. Human herpesvirus 8 – A novel human pathogen

    Directory of Open Access Journals (Sweden)

    Edelman Daniel C

    2005-09-01

    Full Text Available Abstract In 1994, Chang and Moore reported on the latest of the gammaherpesviruses to infect humans, human herpesvirus 8 (HHV-8 1. This novel herpesvirus has and continues to present challenges to define its scope of involvement in human disease. In this review, aspects of HHV-8 infection are discussed, such as, the human immune response, viral pathogenesis and transmission, viral disease entities, and the virus's epidemiology with an emphasis on HHV-8 diagnostics.

  6. Den humane teknologi

    DEFF Research Database (Denmark)

    Fausing, Bent

    2008-01-01

    Artiklen undersøger hverdagsæstetikkens forestillinger om teknologi i tv-reklamer, nærmere bestemt to mobiltelefoner fra Nokia. Nokias slogan er som bekendt: "Nokia -connecting people". Hvilken funktion tilskrives denne succes-teknologi via billeder, narrativer, lyde, interaktioner og affekter? M...... så ofte nævnte post-humane tilstand, er konklusionen. Udgivelsesdato: 14.9.08...

  7. Understanding Human Carboxylesterase 2

    OpenAIRE

    Lamego, Joana

    2012-01-01

    Dissertation presented to obtain the Ph.D degree in Engineering and Technology Sciences, Biotechnology The first barrier oral drugs and prodrugs encounter prior to reaching an organism’s systemic circulation is the gastrointestinal (GI) tract, specifically the intestine, which is the primary section for absorption. Therefore, it is fundamental to understand the permeability of the therapeutic agent as well as its potential metabolism by human enterocytes, since biotransformatio...

  8. Recombinant Human Enterovirus 71

    OpenAIRE

    2004-01-01

    Two human enterovirus 71 (HEV71) isolates were identified from hand, foot and mouth disease patients with genome sequences that had high similarity to HEV71 (>93%) at 5´ UTR, P1, and P2 and coxsackievirus A16 (CV-A16, >85%) at P3 and 3´UTR. Intertypic recombination is likely to have occurred between HEV71 and CV-A16 or an as-yet to be described CV-A16-like virus.

  9. Decoding the human genome

    CERN Document Server

    CERN. Geneva. Audiovisual Unit; Antonerakis, S E

    2002-01-01

    Decoding the Human genome is a very up-to-date topic, raising several questions besides purely scientific, in view of the two competing teams (public and private), the ethics of using the results, and the fact that the project went apparently faster and easier than expected. The lecture series will address the following chapters: Scientific basis and challenges. Ethical and social aspects of genomics.

  10. Structure of Human Adenovirus

    OpenAIRE

    Nemerow, Glen R.; Phoebe L Stewart; Reddy, Vijay S.

    2012-01-01

    A detailed structural analysis of the entire human adenovirus capsid has been stymied by the complexity and size of this 150 MDa macromolecular complex. Over the past 10 years, the steady improvements in viral genome manipulation concomitant with advances in crystallographic techniques and data processing software has allowed structure determination of this virus by X-ray diffraction at 3.5 Å resolution. The virus structure revealed the location, folds, and interactions of major and minor (ce...

  11. Strategic Human Resources Management

    OpenAIRE

    Marta Muqaj

    2016-01-01

    Strategic Human Resources Management (SHRM) represents an important and sensitive aspect of the functioning and development of a company, business, institution, state, public or private agency of a country. SHRM is based on a point of view of the psychological practices, especially by investing on empowerment, broad training and teamwork. This way it remains the primary resource to maintain stability and competitiveness. SHRM has lately evolved on fast and secure steps, and the transformation...

  12. Ancient human microbiomes

    OpenAIRE

    Warinner, C.; Speller, C; Collins, M.; Lewis Jr., C.

    2015-01-01

    Very recently, we discovered a vast new microbial self: the human microbiome. Our native microbiota interface with our biology and culture to influence our health, behavior, and quality of life, and yet we know very little about their origin, evolution, or ecology. With the advent of industrialization, globalization, and modern sanitation, it is intuitive that we have changed our relationship with microbes, but we have little information about the ancestral state of our microbiome, and theref...

  13. Retroviruses and human disease.

    OpenAIRE

    1987-01-01

    Over the past 25 years animal retroviruses have been favoured subjects of research by virologists, oncologists, and molecular biologists. Retroviruses have given us reverse transcriptase, oncogenes, and cloning vectors that may one day be exploited for human gene therapy. They have also given us leukaemia and the acquired immune deficiency syndrome (AIDS). Kawasaki disease and tropical spastic paraparesis are thought to be associated with retrovirus infection, and other diseases such as de Qu...

  14. Multichannel Human Body Communication

    Science.gov (United States)

    Przystup, Piotr; Bujnowski, Adam; Wtorek, Jerzy

    2016-01-01

    Human Body Communication is an attractive alternative for traditional wireless communication (Bluetooth, ZigBee) in case of Body Sensor Networks. Low power, high data rates and data security makes it ideal solution for medical applications. In this paper, signal attenuation for different frequencies, using FR4 electrodes, has been investigated. Performance of single and multichannel transmission with frequency modulation of analog signal has been tested. Experiment results show that HBC is a feasible solution for transmitting data between BSN nodes.

  15. Human Islet Amyloid Polypeptide

    DEFF Research Database (Denmark)

    Kosicka, Iga

    2014-01-01

    Diabetes mellitus type II is a metabolic disease affecting millions of people worldwide. The disease is associated with occurence of insoluble, fibrillar, protein aggregates in islets of Langerhans in the pancreas - islet amyloid. The main constituent of these protein fibers is the human islet...... of diabetes type II, while revealing the structure(s) of islet amyloid fibrils is necessary for potential design of therapeutic agents....

  16. Is dissection humane?

    OpenAIRE

    Hasan, Tabinda

    2011-01-01

    Dissection is being jeopardized in the modern medical education. It has unrelentingly faced the lashes of time and has been the scapegoat for numerous convenient curricula reforms and subjective biases. The cadaver is unparallel in establishing core knowledge among the medical community and it needs to be appreciated in a new light in the “cyber anatomy” realm of today. This article elucidates the medical and ethical validity of continuing human body dissection in medicine which outweighs all...

  17. Mapping the human genome

    Energy Technology Data Exchange (ETDEWEB)

    Cantor, Charles R.

    1989-06-01

    The following pages aim to lay a foundation for understanding the excitement surrounding the ''human genome project,'' as well as to convey a flavor of the ongoing efforts and plans at the Human Genome Center at the Lawrence Berkeley Laboratory. Our own work, of course, is only part of a broad international effort that will dramatically enhance our understanding of human molecular genetics before the end of this century. In this country, the bulk of the effort will be carried out under the auspices of the Department of Energy and the National Institutes of Health, but significant contributions have already been made both by nonprofit private foundations and by private corporation. The respective roles of the DOE and the NIH are being coordinated by an inter-agency committee, the aims of which are to emphasize the strengths of each agency, to facilitate cooperation, and to avoid unnecessary duplication of effort. The NIH, for example, will continue its crucial work in medical genetics and in mapping the genomes of nonhuman species. The DOE, on the other hand, has unique experience in managing large projects, and its national laboratories are repositories of expertise in physics, engineering, and computer science, as well as the life sciences. The tools and techniques the project will ultimately rely on are thus likely to be developed in multidisciplinary efforts at laboratories like LBL. Accordingly, we at LBL take great pride in this enterprise -- an enterprise that will eventually transform our understanding of ourselves.

  18. Human African trypanosomiasis.

    Science.gov (United States)

    Lejon, Veerle; Bentivoglio, Marina; Franco, José Ramon

    2013-01-01

    Human African trypanosomiasis or sleeping sickness is a neglected tropical disease that affects populations in sub-Saharan Africa. The disease is caused by infection with the gambiense and rhodesiense subspecies of the extracellular parasite Trypanosoma brucei, and is transmitted to humans by bites of infected tsetse flies. The disease evolves in two stages, the hemolymphatic and meningoencephalitic stages, the latter being defined by central nervous system infection after trypanosomal traversal of the blood-brain barrier. African trypanosomiasis, which leads to severe neuroinflammation, is fatal without treatment, but the available drugs are toxic and complicated to administer. The choice of medication is determined by the infecting parasite subspecies and disease stage. Clinical features include a constellation of nonspecific symptoms and signs with evolving neurological and psychiatric alterations and characteristic sleep-wake disturbances. Because of the clinical profile variability and insidiously progressive central nervous system involvement, disease staging is currently based on cerebrospinal fluid examination, which is usually performed after the finding of trypanosomes in blood or other body fluids. No vaccine being available, control of human African trypanosomiasis relies on diagnosis and treatment of infected patients, assisted by vector control. Better diagnostic tools and safer, easy to use drugs are needed to facilitate elimination of the disease.

  19. Cocoa and human health.

    Science.gov (United States)

    Ellam, Samantha; Williamson, Gary

    2013-01-01

    Cocoa is a dry, powdered, nonfat component product prepared from the seeds of the Theobroma cacao L. tree and is a common ingredient of many food products, particularly chocolate. Nutritionally, cocoa contains biologically active substances that may affect human health: flavonoids (epicatechin and oligomeric procyanidins), theobromine, and magnesium. Theobromine and epicatechin are absorbed efficiently in the small intestine, and the nature of their conjugates and metabolites are now known. Oligomeric procyanidins are poorly absorbed in the small intestine, but catabolites are very efficiently absorbed after microbial biotransformation in the colon. A significant number of studies, using in vitro and in vivo approaches, on the effects of cocoa and its constituent flavonoids have been conducted. Most human intervention studies have been performed on cocoa as an ingredient, whereas many in vitro studies have been performed on individual components. Approximately 70 human intervention studies have been carried out on cocoa and cocoa-containing products over the past 12 years, with a variety of endpoints. These studies indicate that the most robust biomarkers affected are endothelial function, blood pressure, and cholesterol level. Mechanistically, supporting evidence shows that epicatechin affects nitric oxide synthesis and breakdown (via inhibition of nicotinamide adenine di-nucleotide phosphate oxidase) and the substrate arginine (via inhibition of arginase), among other targets. Evidence further supports cocoa as a biologically active ingredient with potential benefits on biomarkers related to cardiovascular disease. However, the calorie and sugar content of chocolate and its contribution to the total diet should be taken into account in intervention studies.

  20. Human Viruses and Cancer

    Directory of Open Access Journals (Sweden)

    Abigail Morales-Sánchez

    2014-10-01

    Full Text Available The first human tumor virus was discovered in the middle of the last century by Anthony Epstein, Bert Achong and Yvonne Barr in African pediatric patients with Burkitt’s lymphoma. To date, seven viruses -EBV, KSHV, high-risk HPV, MCPV, HBV, HCV and HTLV1- have been consistently linked to different types of human cancer, and infections are estimated to account for up to 20% of all cancer cases worldwide. Viral oncogenic mechanisms generally include: generation of genomic instability, increase in the rate of cell proliferation, resistance to apoptosis, alterations in DNA repair mechanisms and cell polarity changes, which often coexist with evasion mechanisms of the antiviral immune response. Viral agents also indirectly contribute to the development of cancer mainly through immunosuppression or chronic inflammation, but also through chronic antigenic stimulation. There is also evidence that viruses can modulate the malignant properties of an established tumor. In the present work, causation criteria for viruses and cancer will be described, as well as the viral agents that comply with these criteria in human tumors, their epidemiological and biological characteristics, the molecular mechanisms by which they induce cellular transformation and their associated cancers.

  1. Science and Human Experience

    Science.gov (United States)

    Cooper, Leon N.

    2015-01-01

    Part I. Science and Society: 1. Science and human experience; 2. Does science undermine our values?; 3. Can science serve mankind?; 4. Modern science and contemporary discomfort: metaphor and reality; 5. Faith and science; 6. Art and science; 7. Fraud in science; 8. Why study science? The keys to the cathedral; 9. Is evolution a theory? A modest proposal; 10. The silence of the second; 11. Introduction to Copenhagen; 12. The unpaid debt; Part II. Thought and Consciousness: 13. Source and limits of human intellect; 14. Neural networks; 15. Thought and mental experience: the Turing test; 16. Mind as machine: will we rubbish human experience?; 17. Memory and memories: a physicist's approach to the brain; 18. On the problem of consciousness; Part III. On the Nature and Limits of Science: 19. What is a good theory?; 20. Shall we deconstruct science?; 21. Visible and invisible in physical theory; 22. Experience and order; 23. The language of physics; 24. The structure of space; 25. Superconductivity and other insoluble problems; 26. From gravity to light and consciousness: does science have limits?

  2. Human evolution and cognition.

    Science.gov (United States)

    Tattersall, Ian

    2010-09-01

    Human beings are distinguished from all other organisms by their symbolic way of processing information about the world. This unique cognitive style is qualitatively different from all the earlier hominid cognitive styles, and is not simply an improved version of them. The hominid fossil and archaeological records show clearly that biological and technological innovations have typically been highly sporadic, and totally out of phase, since the invention of stone tools some 2.5 million years ago. They also confirm that this pattern applied in the arrival of modern cognition: the anatomically recognizable species Homo sapiens was well established long before any population of it began to show indications of behaving symbolically. This places the origin of symbolic thought in the realms of exaptation, whereby new structures come into existence before being recruited to new uses, and of emergence, whereby entire new levels of complexity are achieved through new combinations of attributes unremarkable in themselves. Both these phenomena involve entirely routine evolutionary processes; special as we human beings may consider ourselves, there was nothing special about the way we came into existence. Modern human cognition is a very recent acquisition; and its emergence ushered in an entirely new pattern of technological (and other behavioral) innovation, in which constant change results from the ceaseless exploration of the potential inherent in our new capacity.

  3. Human to human transmission of arthropod-borne pathogens

    NARCIS (Netherlands)

    Martina, Byron E.; Barzon, Luisa; Pijlman, Gorben P.; Fuente, de la José; Rizzoli, Annapaola; Wammes, Linda J.; Takken, Willem; Rij, van Ronald P.; Papa, Anna

    2017-01-01

    Human-to-human (H2H) transmitted arthropod-borne pathogens are a growing burden worldwide, with malaria and dengue being the most common mosquito-borne H2H transmitted diseases. The ability of vectors to get infected by humans during a blood meal to further propel an epidemic depends on complex i

  4. Human dignity according to international instruments on human rights

    Directory of Open Access Journals (Sweden)

    José Pablo Alzina de Aguilar

    2011-01-01

    Full Text Available According to international instruments on human rights, the dignity of the human person is the foundation of human rights, and both human dignity and human rights are inherent to the human being, universal and inviolable. This understanding of human dignity is not a fruitless truism, but the solid foundation on which to build a world community under the rule of the new ius gentium: the International Law for Humankind. Moreover, it is the clue to answer many questions raised by the new world of globalization and of the exponential growth of international rules.Consequently, there is a need to a common doctrine on a notion of human dignity which will allow the implementation and adjudication of the aforementioned instruments, at the service of the human person and in conformity with the juridical conscience which they reflect. Philosophy of Law concepts which can be traced back to Aristotle provide that notion. According to these concepts, the demanding nature of “human dignity” sustains the notion of “legal personhood”, and both notions pertain to the realm of Law and Right, not of Morale and Values. Thus, human dignity and human rights are and must be, respectively, a basic principle and a necessary part of any Law system, including international law

  5. Securing Humanity - Situating 'Human Security' as Concept and Discourse

    NARCIS (Netherlands)

    D.R. Gasper (Des)

    2005-01-01

    markdownabstractAbstract The label ‘human security’ (HS) has attracted much attention since the 1994 Human Development Report, but there are numerous conflicting definitions and agendas and widespread scepticism. The Ogata-Sen Commission report Human Security Now has proposed a unified yet flexibl

  6. Human-centered Computing: Toward a Human Revolution

    OpenAIRE

    Jaimes, Alejandro; Gatica-Perez, Daniel; Sebe, Nicu; Thomas S. Huang

    2007-01-01

    Human-centered computing studies the design, development, and deployment of mixed-initiative human-computer systems. HCC is emerging from the convergence of multiple disciplines that are concerned both with understanding human beings and with the design of computational artifacts.

  7. Human Provenancing: It's Elemental…

    Science.gov (United States)

    Meier-Augenstein, Wolfram; Kemp

    2009-04-01

    Forensic science already uses a variety of methods often in combination to determine a deceased person's identity if neither personal effects nor next of kin (or close friends) can positively identify the victim. While disciplines such as forensic anthropology are able to work from a blank canvass as it were and can provide information on age, gender and ethnical grouping, techniques such as DNA profiling do rely on finding a match either in a database or a comparative sample presumed to be an ante-mortem sample of the victim or from a putative relation. Chances for either to succeed would be greatly enhanced if information gained from a forensic anthropological examination and, circumstances permitting a facial reconstruction could be linked to another technique that can work from a blank canvass or at least does not require comparison to a subject specific database. With the help of isotope ratio mass spectrometry even the very atoms from which a body is made can be used to say something about a person that will help to focus human identification using traditional techniques such as DNA, fingerprints and odontology. Stable isotope fingerprinting works on the basis that almost all chemical elements and in particular the so-called light elements such as carbon (C) that comprise most of the human body occur naturally in different forms, namely isotopes. 2H isotope abundance values recorded by the human body through food and drink ultimately reflect averaged isotopic composition of precipitation or ground water. Stable isotope analysis of 2H isotopic composition in different human tissue such as hair, nails, bone and teeth enables us to construct a time resolved isotopic profile or ‘fingerprint' that may not necessarily permit direct identification of a murder victim or mass disaster victim but in conjunction with forensic anthropological information will provide sufficient intelligence to construct a profile for intelligence lead identification stating where a

  8. The role of glucocorticoid receptor phosphorylation in Mcl-1 and NOXA gene expression

    Directory of Open Access Journals (Sweden)

    Demonacos Constantinos

    2010-02-01

    Full Text Available Abstract Background The cyclin-dependent kinase (CDK and mitogen-activated protein kinase (MAPK mediated phosphorylation of glucocorticoid receptor (GR exerts opposite effects on GR transcriptional activity and affects other posttranslational modifications within this protein. The major phosphorylation site of human GR targeted by MAPK family is the serine 226 and multiple kinase complexes phosphorylate receptor at the serine 211 residue. We hypothesize that GR posttranslational modifications are involved in the determination of the cellular fate in human lymphoblastic leukemia cells. We investigated whether UV signalling through alternative GR phosphorylation determined the cell type specificity of glucocorticoids (GCs mediated apoptosis. Results We have identified putative Glucocorticoid Response Elements (GREs within the promoter regulatory regions of the Bcl-2 family members NOXA and Mcl-1 indicating that they are direct GR transcriptional targets. These genes were differentially regulated in CEM-C7-14, CEM-C1-15 and A549 cells by glucocorticoids and JNK pathway. In addition, our results revealed that the S211 phosphorylation was dominant in CEM-C7-14, whereas the opposite was the case in CEM-C1-15 where prevalence of S226 GR phosphorylation was observed. Furthermore, multiple GR isoforms with cell line specific patterns were identified in CEM-C7-14 cells compared to CEM-C1-15 and A549 cell lines with the same antibodies. Conclusions GR phosphorylation status kinetics, and site specificity as well as isoform variability differ in CEM-C7-14, CEM-C1-15, and A549 cells. The positive or negative response to GCs induced apoptosis in these cell lines is a consequence of the variable equilibrium of NOXA and Mcl-1 gene expression potentially mediated by alternatively phosphorylated GR, as well as the balance of MAPK/CDK pathways controlling GR phosphorylation pattern. Our results provide molecular base and valuable knowledge for improving the GC

  9. Administrative Aspects of Human Experimentation.

    Science.gov (United States)

    Irvine, George W.

    1992-01-01

    The following administrative aspects of scientific experimentation with human subjects are discussed: the definition of human experimentation; the distinction between experimentation and treatment; investigator responsibility; documentation; the elements and principles of informed consent; and the administrator's role in establishing and…

  10. National Human Genome Research Institute

    Science.gov (United States)

    ... the Director Organization Reports & Publications Español The National Human Genome Research Institute conducts genetic and genomic research, funds ... Landscape Social Media Videos Image Gallery Fact Sheets Human Genome Project Clinical Studies Genomic Careers DNA Day Calendar ...

  11. Human Exposure Database System (HEDS)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Human Exposure Database System (HEDS) provides public access to data sets, documents, and metadata from EPA on human exposure. It is primarily intended for...

  12. Cell encoding recombinant human erythropoietin

    Energy Technology Data Exchange (ETDEWEB)

    Beck, A.K.; Withy, R.M.; Zabrecky, J.R.; Masiello, N.C.

    1990-09-04

    This patent describes a C127 cell transformed with a recombinant DNA vector. It comprises: a DNA sequence encoding human erythropoietin, the transformed cell being capable of producing N-linked and O-linked glycosylated human erythropoietin.

  13. Consolidated Human Activities Database (CHAD)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Consolidated Human Activity Database (CHAD) contains data obtained from human activity studies that were collected at city, state, and national levels. CHAD is...

  14. Human pheromones and sexual attraction.

    Science.gov (United States)

    Grammer, Karl; Fink, Bernhard; Neave, Nick

    2005-02-01

    Olfactory communication is very common amongst animals, and since the discovery of an accessory olfactory system in humans, possible human olfactory communication has gained considerable scientific interest. The importance of the human sense of smell has by far been underestimated in the past. Humans and other primates have been regarded as primarily 'optical animals' with highly developed powers of vision but a relatively undeveloped sense of smell. In recent years this assumption has undergone major revision. Several studies indicate that humans indeed seem to use olfactory communication and are even able to produce and perceive certain pheromones; recent studies have found that pheromones may play an important role in the behavioural and reproduction biology of humans. In this article we review the present evidence of the effect of human pheromones and discuss the role of olfactory cues in human sexual behaviour.

  15. Human Milk-Treatment and Quality of Banked Human Milk.

    Science.gov (United States)

    Picaud, Jean-Charles; Buffin, Rachel

    2017-03-01

    The aim of human milk banks is to deliver safe and high quality donor human milk. Treatment of human milk has to destroy most microorganisms while preserving immunological and nutrient components, which is obtained when using low time low temperature pasteurization. However it destroys bile-simulated lipase, reduces lactoferrin, lysozyme, immunoglobulins, and bactericidal capacity of human milk. New methods are under investigation such as high temperature short time pasteurization, high pressure processing, or ultraviolet irradiation. They have been tested in experimental conditions and there are promising results, but they have to be tested in real conditions in human milk bank.

  16. NASA Space Human Factors Program

    Science.gov (United States)

    1992-01-01

    This booklet briefly and succinctly treats 23 topics of particular interest to the NASA Space Human Factors Program. Most articles are by different authors who are mainly NASA Johnson or NASA Ames personnel. Representative topics covered include mental workload and performance in space, light effects on Circadian rhythms, human sleep, human reasoning, microgravity effects and automation and crew performance.

  17. Timescales of Massive Human Entrainment

    DEFF Research Database (Denmark)

    Fusaroli, Riccardo; Perlman, Marcus; Mislove, Alan

    2014-01-01

    of distinct scales, in an exquisitely time locked fashion. Using a large scale database of human communication data, we analyze and describe three different time scales of human entrainment in electronic media. We sought a distinct shared experience that provided a test bed for quantifying large scale human...

  18. Community College Humanities Review, 1999.

    Science.gov (United States)

    Scheper, George L., Ed.

    1999-01-01

    This special issue of the Community College Humanities Review contains articles generated by National Endowment for the Humanities Summer Institutes, held over several years. The institutes provided opportunities for academics from a variety of humanities disciplines and types of institutions to interact over an extended period of common study of…

  19. A Hierarchy of Human Rights.

    Science.gov (United States)

    Brockett, Charles

    To establish an objective conception of human rights, one must first identify basic needs intrinsic to all people and then determine whether these needs are or can be hierarchically ordered. Many scholars have conducted research on the concept of human needs, particularly in the area of human rights. Among these scholars are Abraham H. Maslow…

  20. Humanism and science: a reaction.

    Science.gov (United States)

    Wampold, Bruce E

    2012-12-01

    Authors in this section have noted that humanism is intrinsic to psychotherapy, although disagreements remain. One of the disagreements is about the role of science in humanism. In this reaction, I contend that humanism, as discussed in these articles, is a legitimate theory to be subjected to scientific scrutiny.

  1. Leadership in a Humane Organization

    Science.gov (United States)

    Dimitrov, Danielle

    2015-01-01

    Purpose: The purpose of this paper is to explore the way leadership influences an organization to become humane through its features and behaviors; as well as the organizational circumstances in which humane leadership can be nurtured. The first empirical case study, in the fields of Human Resource Development (HRD) and hospitality management, to…

  2. Measuring human behaviour with radar

    NARCIS (Netherlands)

    Dorp, Ph. van

    2001-01-01

    The paper presents human motion measurements with the experimental Frequency Modulated Continuous Wave(FMCW) radar at TNO-FEL. The aim of these measurements is to analyse the Doppler velocity spectrum of humans. These analysis give insight in measuring human behaviour with radar for security applica

  3. Human walking estimation with radar

    NARCIS (Netherlands)

    Dorp, Ph. van; Groen, F.C.A.

    2003-01-01

    Radar can be used to observe humans that are obscured by objects such as walls. These humans cannot be visually observed. The radar measurements are used to animate an obscured human in virtual reality. This requires detailed information about the motion. The radar measurements give detailed informa

  4. Human Rights and Public Education

    Science.gov (United States)

    Bowring, Bill

    2012-01-01

    This article attempts a contrast to the contribution by Hugh Starkey. Rather than his account of the inexorable rise of human rights discourse, and of the implementation of human rights standards, human rights are here presented as always and necessarily scandalous and highly contested. First, I explain why the UK has lagged so far behind its…

  5. Pragmatic Challenges to Human Rights

    DEFF Research Database (Denmark)

    Schaumburg-Müller, Sten

    2007-01-01

    Pragmatism offers a platform for posing relevant questions. This article uses a pragmatic point of departure to question a natural law conception of human rights and to take a closer look at three pressing human rights problems: The human rights situation in states with little or no state capacity...

  6. Human factors in network security

    OpenAIRE

    Jones, Francis B.

    1991-01-01

    Human factors, such as ethics and education, are important factors in network information security. This thesis determines which human factors have significant influence on network security. Those factors are examined in relation to current security devices and procedures. Methods are introduced to evaluate security effectiveness by incorporating the appropriate human factors into network security controls

  7. Human myoblast genome therapy

    Institute of Scientific and Technical Information of China (English)

    Peter K Law; Leo A Bockeria; Choong-Chin Liew; Danlin M Law; Ping Lu; Eugene KW Sim; Khawja H Haider; Lei Ye; Xun Li; Margarita N Vakhromeeva; Ilia I Berishvili

    2006-01-01

    Human Myoblast Genome Therapy (HMGT) is a platform technology of cell transplantation, nuclear transfer, and tissue engineering. Unlike stem cells, myoblasts are differentiated, immature cells destined to become muscles. Myoblasts cultured from satellite cells of adult muscle biopsies survive, develop, and function to revitalize degenerative muscles upon transplantation. Injection injury activates regeneration of host myofibers that fuse with the engrafted myoblasts, sharing their nuclei in a common gene pool of the syncytium. Thus, through nuclear transfer and complementation, the normal human genome can be transferred into muscles of patients with genetic disorders to achieve phenotype repair or disease prevention. Myoblasts are safe and efficient gene transfer vehicles endogenous to muscles that constitute 50% of body weight. Results of over 280 HMGT procedures on Duchenne Muscular Dystrophy (DMD) subjects in the past 15 years demonstrated absolute safety. Myoblast-injected DMD muscles showed improved histology.Strength increase at 18 months post-operatively averaged 123%. In another application of HMGT on ischemic cardiomyopathy, the first human myoblast transfer into porcine myocardium revealed that it was safe and effective. Clinical trials on approximately 220 severe cardiomyopathy patients in 15 countries showed a <10% mortality. Most subjects received autologous cells implanted on the epicardial surface during coronory artery bypass graft, or injected on the endomyocardial surface percutaneously through guiding catheters. Significant increases in left ventricular ejection fraction, wall thickness, and wall motion have been reported, with reduction in perfusion defective areas, angina, and shortness of breath. As a new modality of treatment for disease in the skeletal muscle or myocardium, HMGT emerged as safe and effective. Large randomized multi-center trials are under way to confirm these preliminary results. The future of HMGT is bright and exciting

  8. [Humanism and medicine].

    Science.gov (United States)

    Kahn, Axel

    2002-03-30

    WITH THE PROGRESS MADE IN KNOWLEDGE AND TECHNIQUES: Therapeutic efficacy has advanced. However, interrogations concerning the control of the power that is conferred and the new obligations towards patients that stem from this progress have emerged and, further to the sinister ethical deviations in medical research and testing, and the supreme temptation that is represented by the money involved, questioning has increased. THE NUREMBERG CODE: Promulgated in December 1947, is the founder text of modern biomedical ethics. Subsequently completed by numerous other international conventions, it established the principle of voluntary, informed consent, therefore confirming the autonomy of the patient and the respect that is due from the physicians. However, questions arise not only regarding the foetus and embryo, but also regarding those reaching the end of their lives. CONCERNING EMBRYOS: No contradiction is apparent between the singularity of the human embryo and the use of embryos destined to be destroyed in highly scientific and moral quality research projects. With regard to the development of methods for producing cloned human embryos, it appears to be associated with greater risks than establishing urgent and necessary steps towards fulfilling the promises of regenerating medicine. Last but not least, deviations in reproductive biology and clinical trials conducted in this field, with relentless procreation and "human studies", must be denounced. AT THE OTHER END OF LIFE: It is worrying to note the apparent facility with which our societies consider that old age is an indignity. To call knowledge a 'power' is to consider that such power can be used not only to relieve suffering but also to manipulate others. The humanistic finality of an intention is not sufficient to guarantee neither its benignity nor its morality.

  9. Human Love, Boundless Love

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    @@ On August 15,a special charity performance was carried on in Malaysia by IPC Shopping Services(M)Sdn Bhd,an Ecommerce company based on Malaysia.It was special for"May 12 Earthquake"in China's Sichuan Province.and special for those suffering children in the disaster.Months have past,but moving and touching stories happened during the earthquake encourage the people alive to create a better life and never give up hopes.What the post-earthquake construction left to us is the human love and boundless love,which is also the theme of the"8.15 Yu Miao Charity Performance".

  10. Post-human Viewing

    DEFF Research Database (Denmark)

    Blaagaard, Bolette

    2013-01-01

    to become part of a global cultural flow, thus calling into question the physical connection between viewer and image. This article analyses what happens to that connection when not only the image but also the physical body is mediated and challenged in post-human relations, and examines the ensuing ethical......This article discusses the relationship between theories of photography and mobile phone footage. In doing so, it asks if theories of photography still apply in a technologically saturated world of imagery. Technology is an increasingly important part of viewing imagery today and enables imagery...

  11. Nanotechnology and human health

    CERN Document Server

    Malsch, Ineke

    2013-01-01

    Addressing medium- and long-term expectations for human health, this book reviews current scientific and technical developments in nanotechnology for biomedical, agrofood, and environmental applications. This collection of perspectives on the ethical, legal, and societal implications of bionanotechnology provides unique insight into contemporary technological developments. Readers with a technical background will benefit from the overview of the state-of-the-art research in their field, while readers with a social science background will benefit from the discussion of realistic prospects of na

  12. Mentoring Human Performance - 12480

    Energy Technology Data Exchange (ETDEWEB)

    Geis, John A.; Haugen, Christian N. [CALIBRE Systems, Inc., Alexandria, Virginia (United States)

    2012-07-01

    Although the positive effects of implementing a human performance approach to operations can be hard to quantify, many organizations and industry areas are finding tangible benefits to such a program. Recently, a unique mentoring program was established and implemented focusing on improving the performance of managers, supervisors, and work crews, using the principles of Human Performance Improvement (HPI). The goal of this mentoring was to affect behaviors and habits that reliably implement the principles of HPI to ensure continuous improvement in implementation of an Integrated Safety Management System (ISMS) within a Conduct of Operations framework. Mentors engaged with personnel in a one-on-one, or one-on-many dialogue, which focused on what behaviors were observed, what factors underlie the behaviors, and what changes in behavior could prevent errors or events, and improve performance. A senior management sponsor was essential to gain broad management support. A clear charter and management plan describing the goals, objectives, methodology, and expected outcomes was established. Mentors were carefully selected with senior management endorsement. Mentors were assigned to projects and work teams based on the following three criteria: 1) knowledge of the work scope; 2) experience in similar project areas; and 3) perceived level of trust they would have with project management, supervision, and work teams. This program was restructured significantly when the American Reinvestment and Recovery Act (ARRA) and the associated funding came to an end. The program was restructured based on an understanding of the observations, attributed successes and identified shortfalls, and the consolidation of those lessons. Mentoring the application of proven methods for improving human performance was shown effective at increasing success in day-to-day activities and increasing confidence and level of skill of supervisors. While mentoring program effectiveness is difficult to

  13. RNA in human sperm

    Institute of Scientific and Technical Information of China (English)

    Rui Pires Martins; Stephen A. Krawetz

    2005-01-01

    We have yet to develop a fundamental understanding of the molecular complexities of human spermatozoa. This encompasses the unique packaging and structure of the sperm genome along with their paternally derived RNAs in preparation for their delivery to the egg. The diversity of these transcripts is vast, including several anti-sense molecules resembling known regulatory micro-RNAs. The field is still grasping with its delivery to the oocyte at fertilization and possible significance. It remains tempting to analogize them to maternally-derived transcripts active in early embryo patterning. Irrespective of their role in the embryo, their use as a means to assess male factor infertility is promising.

  14. Human workload in aviation

    Science.gov (United States)

    Kantowitz, Barry H.; Casper, Patricia A.

    1988-01-01

    The application of human-factors analysis techniques to the evaluation of aircraft-crew workloads is discussed in an introductory overview. Consideration is given to the importance of workload for safety, crew size, automation, and certification; the definition and measurement of workload, physical vs mental workloads, subjective ratings, secondary tasks, biocybernetic measures, and attention and workload. Recent studies of pilot and ATC workloads are reviewed, and typical data are presented in graphs. Future trends are discussed, and it is predicted that increased cockpit automation will eventually require new methods to maintain operator attention rather than reduce workload.

  15. [Human brown adipose tissue].

    Science.gov (United States)

    Virtanen, Kirsi A; Nuutila, Pirjo

    2015-01-01

    Adult humans have heat-producing and energy-consuming brown adipose tissue in the clavicular region of the neck. There are two types of brown adipose cells, the so-called classic and beige adipose cells. Brown adipose cells produce heat by means of uncoupler protein 1 (UCP1) from fatty acids and sugar. By applying positron emission tomography (PET) measuring the utilization of sugar, the metabolism of brown fat has been shown to multiply in the cold, presumably influencing energy consumption. Active brown fat is most likely present in young adults, persons of normal weight and women, least likely in obese persons.

  16. Photosensitive human syndromes.

    Science.gov (United States)

    Spivak, Graciela; Hanawalt, Philip C

    2015-06-01

    Photosensitivity in humans can result from defects in repair of light-induced DNA lesions, from photoactivation of chemicals (including certain medications) with sunlight to produce toxic mediators, and by immune reactions to sunlight exposures. Deficiencies in DNA repair and the processing of damaged DNA during replication and transcription may result in mutations and genomic instability. We will review current understanding of photosensitivity to short wavelength ultraviolet light (UV) due to genetic defects in particular DNA repair pathways; deficiencies in some are characterized by an extremely high incidence of cancer in sun-exposed tissues, while in others no cancers have been reported.

  17. HUMAN MACHINE COOPERATIVE TELEROBOTICS

    Energy Technology Data Exchange (ETDEWEB)

    William R. Hamel; Spivey Douglass; Sewoong Kim; Pamela Murray; Yang Shou; Sriram Sridharan; Ge Zhang; Scott Thayer; Rajiv V. Dubey

    2003-06-30

    The remediation and deactivation and decommissioning (D&D) of nuclear waste storage tanks using telerobotics is one of the most challenging tasks faced in environmental cleanup. Since a number of tanks have reached the end of their design life and some of them have leaks, the unstructured, uncertain and radioactive environment makes the work inefficient and expensive. However, the execution time of teleoperation consumes ten to hundred times that of direct contact with an associated loss in quality. Thus, a considerable effort has been expended to improve the quality and efficiency of telerobotics by incorporating into teleoperation and robotic control functions such as planning, trajectory generation, vision, and 3-D modeling. One example is the Robot Task Space Analyzer (RTSA), which has been developed at the Robotics and Electromechanical Systems Laboratory (REMSL) at the University of Tennessee in support of the D&D robotic work at the Oak Ridge National Laboratory and the National Energy Technology Laboratory. This system builds 3-D models of the area of interest in task space through automatic image processing and/or human interactive manual modeling. The RTSA generates a task plan file, which describes the execution of a task including manipulator and tooling motions. The high level controller of the manipulator interprets the task plan file and executes the task automatically. Thus, if the environment is not highly unstructured, a tooling task, which interacts with environment, will be executed in the autonomous mode. Therefore, the RTSA not only increases the system efficiency, but also improves the system reliability because the operator will act as backstop for safe operation after the 3-D models and task plan files are generated. However, unstructured conditions of environment and tasks necessitate that the telerobot operates in the teleoperation mode for successful execution of task. The inefficiency in the teleoperation mode led to the research

  18. Philanthropy and Human Rights

    DEFF Research Database (Denmark)

    Larsen, Øjvind

    2013-01-01

    In the last couple of decades, philanthropy has become a concern which is taken seriously in the Western world. Normal people give donations and volunteer on a large scale within the institutions of civil society. This is the case for business corporations as well, who now have to act with a form...... sense, a charitable act with the aim to promote human happiness independent of gender, class, race, etc. This is the genealogy of the modern understanding of philanthropy, which will be developed in this paper....

  19. Human herpes simplex labialis.

    Science.gov (United States)

    Fatahzadeh, M; Schwartz, R A

    2007-11-01

    Humans are the natural host for eight of more than 80 known herpes viruses. Infections with herpes simplex virus type 1 (HSV-1) are ubiquitous worldwide and highly transmissible. Herpes simplex labialis (HSL) is the best-recognized recrudescent infection of the lips and perioral tissues caused by HSV-1. Facial lesions of HSL may be unsightly, frequent outbreaks unpleasant, and the infection itself more severe locally and systemically in immunocompromised people. This article highlights the pathogenesis, clinical presentation, diagnostic features and management issues for HSL.

  20. Human Genome Program

    Energy Technology Data Exchange (ETDEWEB)

    1993-01-01

    The DOE Human Genome program has grown tremendously, as shown by the marked increase in the number of genome-funded projects since the last workshop held in 1991. The abstracts in this book describe the genome research of DOE-funded grantees and contractors and invited guests, and all projects are represented at the workshop by posters. The 3-day meeting includes plenary sessions on ethical, legal, and social issues pertaining to the availability of genetic data; sequencing techniques, informatics support; and chromosome and cDNA mapping and sequencing.

  1. Book Review: Human Radiosensitivity

    Energy Technology Data Exchange (ETDEWEB)

    Morgan, William F.

    2013-11-01

    This well written report reviews the evidence for variation in human sensitivity to ionizing radiation from epidemiological, clinical, animal, and experimental studies. The report also considers the mechanism(s) of radiation sensitivity and the ethical implications of current and potential knowledge that might be gained in the future. The report is concisely written, considers a large number of historical as well as recent studies, and features a ‘ bullet like ’ summary at the end of each chapter that captures the salient points.

  2. Visual Analysis of Humans

    CERN Document Server

    Moeslund, Thomas B

    2011-01-01

    This unique text/reference provides a coherent and comprehensive overview of all aspects of video analysis of humans. Broad in coverage and accessible in style, the text presents original perspectives collected from preeminent researchers gathered from across the world. In addition to presenting state-of-the-art research, the book reviews the historical origins of the different existing methods, and predicts future trends and challenges. This title: features a Foreword by Professor Larry Davis; contains contributions from an international selection of leading authorities in the field; includes

  3. Biological Databases for Human Research

    Institute of Scientific and Technical Information of China (English)

    Dong Zou; Lina Ma; Jun Yu; Zhang Zhang

    2015-01-01

    The completion of the Human Genome Project lays a foundation for systematically studying the human genome from evolutionary history to precision medicine against diseases. With the explosive growth of biological data, there is an increasing number of biological databases that have been developed in aid of human-related research. Here we present a collection of human-related biological databases and provide a mini-review by classifying them into different categories according to their data types. As human-related databases continue to grow not only in count but also in volume, challenges are ahead in big data storage, processing, exchange and curation.

  4. Antarctic skuas recognize individual humans.

    Science.gov (United States)

    Lee, Won Young; Han, Yeong-Deok; Lee, Sang-Im; Jablonski, Piotr G; Jung, Jin-Woo; Kim, Jeong-Hoon

    2016-07-01

    Recent findings report that wild animals can recognize individual humans. To explain how the animals distinguish humans, two hypotheses are proposed. The high cognitive abilities hypothesis implies that pre-existing high intelligence enabled animals to acquire such abilities. The pre-exposure to stimuli hypothesis suggests that frequent encounters with humans promote the acquisition of discriminatory abilities in these species. Here, we examine individual human recognition abilities in a wild Antarctic species, the brown skua (Stercorarius antarcticus), which lives away from typical human settlements and was only recently exposed to humans due to activities at Antarctic stations. We found that, as nest visits were repeated, the skua parents responded at further distances and were more likely to attack the nest intruder. Also, we demonstrated that seven out of seven breeding pairs of skuas selectively responded to a human nest intruder with aggression and ignored a neutral human who had not previously approached the nest. The results indicate that Antarctic skuas, a species that typically inhabited in human-free areas, are able to recognize individual humans who disturbed their nests. Our findings generally support the high cognitive abilities hypothesis, but this ability can be acquired during a relatively short period in the life of an individual as a result of interactions between individual birds and humans.

  5. Timescales of Massive Human Entrainment

    CERN Document Server

    Fusaroli, Riccardo; Mislove, Alan; Paxton, Alexandra; Matlock, Teenie; Dale, Rick

    2014-01-01

    The past two decades have seen an upsurge of interest in the collective behaviors of complex systems composed of many agents. In this paper, we extend concepts of entrainment to the dynamics of human collective attention. We demonstrate that large scale human entrainment may hold across a number of distinct scales, in an exquisitely time locked fashion. Using a large scale database of human communication data, we analyze and describe three different time scales of human entrainment in electronic media. We sought a distinct shared experience that provided a test bed for quantifying large scale human entrainment. We conducted a detailed investigation of the real time unfolding of human entrainment, as expressed by the content and patterns of hundreds of thousands of messages on Twitter, during the 2012 US presidential debates. By time locking these data sources, we quantify the real time impact of the debate on human attention. We show that social behavior covaries second by second to the interactional dynamics...

  6. Human activity recognition and prediction

    CERN Document Server

    2016-01-01

    This book provides a unique view of human activity recognition, especially fine-grained human activity structure learning, human-interaction recognition, RGB-D data based action recognition, temporal decomposition, and causality learning in unconstrained human activity videos. The techniques discussed give readers tools that provide a significant improvement over existing methodologies of video content understanding by taking advantage of activity recognition. It links multiple popular research fields in computer vision, machine learning, human-centered computing, human-computer interaction, image classification, and pattern recognition. In addition, the book includes several key chapters covering multiple emerging topics in the field. Contributed by top experts and practitioners, the chapters present key topics from different angles and blend both methodology and application, composing a solid overview of the human activity recognition techniques. .

  7. Globalization and human cooperation.

    Science.gov (United States)

    Buchan, Nancy R; Grimalda, Gianluca; Wilson, Rick; Brewer, Marilynn; Fatas, Enrique; Foddy, Margaret

    2009-03-17

    Globalization magnifies the problems that affect all people and that require large-scale human cooperation, for example, the overharvesting of natural resources and human-induced global warming. However, what does globalization imply for the cooperation needed to address such global social dilemmas? Two competing hypotheses are offered. One hypothesis is that globalization prompts reactionary movements that reinforce parochial distinctions among people. Large-scale cooperation then focuses on favoring one's own ethnic, racial, or language group. The alternative hypothesis suggests that globalization strengthens cosmopolitan attitudes by weakening the relevance of ethnicity, locality, or nationhood as sources of identification. In essence, globalization, the increasing interconnectedness of people worldwide, broadens the group boundaries within which individuals perceive they belong. We test these hypotheses by measuring globalization at both the country and individual levels and analyzing the relationship between globalization and individual cooperation with distal others in multilevel sequential cooperation experiments in which players can contribute to individual, local, and/or global accounts. Our samples were drawn from the general populations of the United States, Italy, Russia, Argentina, South Africa, and Iran. We find that as country and individual levels of globalization increase, so too does individual cooperation at the global level vis-à-vis the local level. In essence, "globalized" individuals draw broader group boundaries than others, eschewing parochial motivations in favor of cosmopolitan ones. Globalization may thus be fundamental in shaping contemporary large-scale cooperation and may be a positive force toward the provision of global public goods.

  8. Human kin detection.

    Science.gov (United States)

    Bressan, Paola; Kramer, Peter

    2015-01-01

    Natural selection has favored the evolution of behaviors that benefit not only one's genes, but also their copies in genetically related individuals. These behaviors include optimal outbreeding (choosing a mate that is neither too closely related, nor too distant), nepotism (helping kin), and spite (hurting non-kin at a personal cost), and all require some form of kin detection or kin recognition. Yet, kinship cannot be assessed directly; human kin detection relies on heuristic cues that take into account individuals' context (whether they were reared by our mother, or grew up in our home, or were given birth by our spouse), appearance (whether they smell or look like us), and ability to arouse certain feelings (whether we feel emotionally close to them). The uncertainties of kin detection, along with its dependence on social information, create ample opportunities for the evolution of deception and self-deception. For example, babies carry no unequivocal stamp of their biological father, but across cultures they are passionately claimed to resemble their mother's spouse; to the same effect, 'neutral' observers are greatly influenced by belief in relatedness when judging resemblance between strangers. Still, paternity uncertainty profoundly shapes human relationships, reducing not only the investment contributed by paternal versus maternal kin, but also prosocial behavior between individuals who are related through one or more males rather than females alone. Because of its relevance to racial discrimination and political preferences, the evolutionary pressure to prefer kin to non-kin has a manifold influence on society at large.

  9. Predicting Human Cooperation.

    Directory of Open Access Journals (Sweden)

    John J Nay

    Full Text Available The Prisoner's Dilemma has been a subject of extensive research due to its importance in understanding the ever-present tension between individual self-interest and social benefit. A strictly dominant strategy in a Prisoner's Dilemma (defection, when played by both players, is mutually harmful. Repetition of the Prisoner's Dilemma can give rise to cooperation as an equilibrium, but defection is as well, and this ambiguity is difficult to resolve. The numerous behavioral experiments investigating the Prisoner's Dilemma highlight that players often cooperate, but the level of cooperation varies significantly with the specifics of the experimental predicament. We present the first computational model of human behavior in repeated Prisoner's Dilemma games that unifies the diversity of experimental observations in a systematic and quantitatively reliable manner. Our model relies on data we integrated from many experiments, comprising 168,386 individual decisions. The model is composed of two pieces: the first predicts the first-period action using solely the structural game parameters, while the second predicts dynamic actions using both game parameters and history of play. Our model is successful not merely at fitting the data, but in predicting behavior at multiple scales in experimental designs not used for calibration, using only information about the game structure. We demonstrate the power of our approach through a simulation analysis revealing how to best promote human cooperation.

  10. Adipokines in human reproduction.

    Science.gov (United States)

    Dupont, Joëlle; Pollet-Villard, Xavier; Reverchon, Maxime; Mellouk, Namya; Levy, Rachel

    2015-10-01

    Adipose tissue communicates with other central and peripheral organs by the synthesis and release of substances called adipokines. The most studied adipokine is leptin but others have been recently identified including resistin, adiponectin, chemerin, omentin and visfatin. These adipokines have a critical role in the development of obesity-related complications and inflammatory conditions. However, they are also involved in other functions in the organism including reproductive functions. Indeed, many groups have demonstrated that adipokine receptors, such as adiponectin and chemerin, but also adipokines themselves (adiponectin, chemerin, resistin, visfatin and omentin) are expressed in human peripheral reproductive tissues and that these adipokines are likely to exert direct effects on these tissues. After a brief description of these new adipokines, an overview of their actions in different human reproductive organs (hypothalamus, pituitary, ovary, testis, uterus and placenta) will be presented. Finally, comments will be made on the eventual alterations of these adipokines in reproductive disorders, with special attention to polycystic ovary syndrome, a disease characterized by dysfunction of gonadal axis and systemic nerve endocrine metabolic network with a prevalence of up to 10% in women of reproductive age.

  11. Our humanity at CERN

    CERN Multimedia

    2015-01-01

    Diversity and respect are defining aspects of CERN and something that I am very proud of. Our institution is the closest to a true meritocracy that I have ever experienced in my long career, and as such is a valuable role model for the world. It is a place where everyone is welcome, and where anyone can succeed, regardless of his or her ethnicity, beliefs or sexual orientation. It is therefore with some disappointment that I have learned of a spate of recent events concerning posters put up around the Laboratory by our LGBT community.   Freedom of expression is a fundamental human right. One needs to look no further than the Universal Declaration of Human Rights for common-sense clarity on this issue. It states that: ‘everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers’. In line with that, I fully supp...

  12. Flexible human collective wisdom.

    Science.gov (United States)

    Juni, Mordechai Z; Eckstein, Miguel P

    2015-12-01

    Group decisions typically outperform individual decisions. But how do groups combine their individual decisions to reach their collective decisions? Previous studies conceptualize collective decision making using static combination rules, be it a majority-voting rule or a weighted-averaging rule. Unknown is whether groups adapt their combination rules to changing information environments. We implemented a novel paradigm for which information obeyed a mixture of distributions, such that the optimal Bayesian rule is nonlinear and often follows minority opinions, while the majority rule leads to suboptimal but above chance performance. Using perceptual (Experiment 1) and cognitive (Experiment 2) signal-detection tasks, we switched the information environment halfway through the experiments to a mixture of distributions without informing participants. Groups gradually abandoned the majority rule to follow any minority opinion advocating signal presence with high confidence. Furthermore, groups with greater ability to abandon the majority rule achieved higher collective-decision accuracies. It is important to note that this abandonment was not triggered by performance loss for the majority rule relative to the first half of the experiment. Our results propose a new theory of human collective decision making: Humans make inferences about how information is distributed across individuals and time, and dynamically alter their joint decision algorithms to enhance the benefits of collective wisdom.

  13. Human resources report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-05-01

    The human resources issues associated with offshore oil and gas exploration and development in British Columbia were discussed with particular focus on the nature of direct employment opportunities associated with two development scenarios. The scenarios involved one natural gas project in the Hecate Strait, and one oil project in the Queen Charlotte Sound. One of the promises of offshore oil and gas development in British Columbia's west coast has been the creation of employment opportunities which would in turn, improve the social conditions and standard of living of residents in British Columbia. Some background information was provided on labour requirements by phases of exploration, pre-development planning, construction and production. Information on labour supply and training was also included and a range of human resource planning issues were identified. It was concluded that the oil and gas industry is capital-intensive, requiring highly trained and skilled people. The industry supports above average wage rates. Most of the employment is not generated by the oil and gas industry, but by their many service and supply contractors. The existing oil and gas industry in the province could supply some of the qualified labour, but in most instances, more specific training will be required. Exploration activity will probably be intermittent and carried out by specialized work crews. Local employment will come from servicing and supplying the seismic and support vessels. The occupational requirements will change through the exploration, development and production phases. refs., tabs., figs.

  14. The Human Variome Project.

    Science.gov (United States)

    Burn, John; Watson, Michael

    2016-06-01

    The practical realization of genomics has meant a growing realization that variant interpretation is a major barrier to practical use of DNA sequence data. The late Professor Dick Cotton devoted his life to innovation in molecular genetics and was a prime mover in the international response to the need to understand the "variome." His leadership resulted in the launch first of the Human Genetic Variation Society and then, in 2006, an international agreement to launch the Human Variome Project (HVP), aimed at data integration enabled by standards and infrastructure of the databases of variants being identified in families with a range of inherited disorders. The project attracted a network of affiliates across 81 countries and earned formal recognition by UNESCO, which now hosts its biennial meetings. It has also signed a Memorandum of Understanding with the World Health Organization. Future progress will depend on longer term secure funding and integration with the efforts of the genomics community where the rapid advances in sequencing technology have enabled variant capture on a previously unimaginable scale. Efforts are underway to integrate the efforts of HVP with those of the Global Alliance for Genomics and Health to provide a lasting legacy of Dick Cotton's vision.

  15. Issues on combining human and non-human intelligence

    Science.gov (United States)

    Statler, Irving C.; Connors, Mary M.

    1991-01-01

    The purpose here is to call attention to some of the issues confronting the designer of a system that combines human and non-human intelligence. We do not know how to design a non-human intelligence in such a way that it will fit naturally into a human organization. The author's concern is that, without adequate understanding and consideration of the behavioral and psychological limitations and requirements of the human member(s) of the system, the introduction of artificial intelligence (AI) subsystems can exacerbate operational problems. We have seen that, when these technologies are not properly applied, an overall degradation of performance at the system level can occur. Only by understanding how human and automated systems work together can we be sure that the problems introduced by automation are not more serious than the problems solved.

  16. Human dignity and human rights in bioethics: the Kantian approach.

    Science.gov (United States)

    Rothhaar, Markus

    2010-08-01

    The concept of human dignity plays an important role in the public discussion about ethical questions concerning modern medicine and biology. At the same time, there is a widespread skepticism about the possibility to determine the content and the claims of human dignity. The article goes back to Kantian Moral Philosophy, in order to show that human dignity has in fact a determinable content not as a norm in itself, but as the principle and ground of human rights and any deontological norms in biomedical ethics. When it comes to defining the scope of human dignity, i.e., the question which entities are protected by human dignity, Kant clearly can be found on the "pro life"-side of the controversy. This, however, is the result of some specific implications of Kant's transcendental approach that may be put into question.

  17. Leptospirosis in humans.

    Science.gov (United States)

    Haake, David A; Levett, Paul N

    2015-01-01

    Leptospirosis is a widespread and potentially fatal zoonosis that is endemic in many tropical regions and causes large epidemics after heavy rainfall and flooding. Infection results from direct or indirect exposure to infected reservoir host animals that carry the pathogen in their renal tubules and shed pathogenic leptospires in their urine. Although many wild and domestic animals can serve as reservoir hosts, the brown rat (Rattus norvegicus) is the most important source of human infections. Individuals living in urban slum environments characterized by inadequate sanitation and poor housing are at high risk of rat exposure and leptospirosis. The global burden of leptospirosis is expected to rise with demographic shifts that favor increases in the number of urban poor in tropical regions subject to worsening storms and urban flooding due to climate change. Data emerging from prospective surveillance studies suggest that most human leptospiral infections in endemic areas are mild or asymptomatic. Development of more severe outcomes likely depends on three factors: epidemiological conditions, host susceptibility, and pathogen virulence (Fig. 1). Mortality increases with age, particularly in patients older than 60 years of age. High levels of bacteremia are associated with poor clinical outcomes and, based on animal model and in vitro studies, are related in part to poor recognition of leptospiral LPS by human TLR4. Patients with severe leptospirosis experience a cytokine storm characterized by high levels of IL-6, TNF-alpha, and IL-10. Patients with the HLA DQ6 allele are at higher risk of disease, suggesting a role for lymphocyte stimulation by a leptospiral superantigen. Leptospirosis typically presents as a nonspecific, acute febrile illness characterized by fever, myalgia, and headache and may be confused with other entities such as influenza and dengue fever. Newer diagnostic methods facilitate early diagnosis and antibiotic treatment. Patients progressing to

  18. The human urine metabolome.

    Directory of Open Access Journals (Sweden)

    Souhaila Bouatra

    Full Text Available Urine has long been a "favored" biofluid among metabolomics researchers. It is sterile, easy-to-obtain in large volumes, largely free from interfering proteins or lipids and chemically complex. However, this chemical complexity has also made urine a particularly difficult substrate to fully understand. As a biological waste material, urine typically contains metabolic breakdown products from a wide range of foods, drinks, drugs, environmental contaminants, endogenous waste metabolites and bacterial by-products. Many of these compounds are poorly characterized and poorly understood. In an effort to improve our understanding of this biofluid we have undertaken a comprehensive, quantitative, metabolome-wide characterization of human urine. This involved both computer-aided literature mining and comprehensive, quantitative experimental assessment/validation. The experimental portion employed NMR spectroscopy, gas chromatography mass spectrometry (GC-MS, direct flow injection mass spectrometry (DFI/LC-MS/MS, inductively coupled plasma mass spectrometry (ICP-MS and high performance liquid chromatography (HPLC experiments performed on multiple human urine samples. This multi-platform metabolomic analysis allowed us to identify 445 and quantify 378 unique urine metabolites or metabolite species. The different analytical platforms were able to identify (quantify a total of: 209 (209 by NMR, 179 (85 by GC-MS, 127 (127 by DFI/LC-MS/MS, 40 (40 by ICP-MS and 10 (10 by HPLC. Our use of multiple metabolomics platforms and technologies allowed us to identify several previously unknown urine metabolites and to substantially enhance the level of metabolome coverage. It also allowed us to critically assess the relative strengths and weaknesses of different platforms or technologies. The literature review led to the identification and annotation of another 2206 urinary compounds and was used to help guide the subsequent experimental studies. An online database

  19. Human metabolic atlas: an online resource for human metabolism.

    Science.gov (United States)

    Pornputtapong, Natapol; Nookaew, Intawat; Nielsen, Jens

    2015-01-01

    Human tissue-specific genome-scale metabolic models (GEMs) provide comprehensive understanding of human metabolism, which is of great value to the biomedical research community. To make this kind of data easily accessible to the public, we have designed and deployed the human metabolic atlas (HMA) website (http://www.metabolicatlas.org). This online resource provides comprehensive information about human metabolism, including the results of metabolic network analyses. We hope that it can also serve as an information exchange interface for human metabolism knowledge within the research community. The HMA consists of three major components: Repository, Hreed (Human REaction Entities Database) and Atlas. Repository is a collection of GEMs for specific human cell types and human-related microorganisms in SBML (System Biology Markup Language) format. The current release consists of several types of GEMs: a generic human GEM, 82 GEMs for normal cell types, 16 GEMs for different cancer cell types, 2 curated GEMs and 5 GEMs for human gut bacteria. Hreed contains detailed information about biochemical reactions. A web interface for Hreed facilitates an access to the Hreed reaction data, which can be easily retrieved by using specific keywords or names of related genes, proteins, compounds and cross-references. Atlas web interface can be used for visualization of the GEMs collection overlaid on KEGG metabolic pathway maps with a zoom/pan user interface. The HMA is a unique tool for studying human metabolism, ranging in scope from an individual cell, to a specific organ, to the overall human body. This resource is freely available under a Creative Commons Attribution-NonCommercial 4.0 International License.

  20. Human subjects research handbook: Protecting human research subjects. Second edition

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-01-30

    This handbook serves as a guide to understanding and implementing the Federal regulations and US DOE Orders established to protect human research subjects. Material in this handbook is directed towards new and continuing institutional review board (IRB) members, researchers, institutional administrators, DOE officials, and others who may be involved or interested in human subjects research. It offers comprehensive overview of the various requirements, procedures, and issues relating to human subject research today.