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Sample records for evans blue

  1. Quantitative evaluation of vascular permeability in the gerbil brain after transient ischemia using Evans blue fluorescence.

    Science.gov (United States)

    Uyama, O; Okamura, N; Yanase, M; Narita, M; Kawabata, K; Sugita, M

    1988-04-01

    Mongolian gerbils were used to evaluate brain edema during restoration of flow following bilateral carotid occlusion for 1 h. We have modified the method for fluorometric measurement of Evans blue to monitor vascular protein leakage (vasogenic edema). The extraction of extravasated Evans blue was performed by homogenizing the whole brain in 50% trichloroacetic acid. The supernatant was diluted fourfold with ethanol and the Evans blue fluorescence was measured. The tissue blank was negligible. Evans blue content of the plasma was similarly determined and the ratio of tissue to plasma Evans blue content was calculated. Furthermore, Evans blue fluorescence was used for microscopic investigation. It is suggested that Evans blue fluorescence can be applied for quantification of protein leakage with much more sensitivity and accuracy than the colorimetric absorbance method, as well as for tissue localization of protein leakage.

  2. Differential modulation of AMPA receptor mediated currents by Evans Blue in postnatal rat hippocampal neurones

    OpenAIRE

    Schürmann, Britta; Wu, Xueqing; Dietzel, Irmgard D; Leßmann, Volkmar

    1997-01-01

    The modulation of non-N-methyl-D-aspartate (NMDA) receptor-mediated whole cell currents and of glutamatergic synaptic transmission by purified Evans Blue (EB) was investigated in rat cultured postnatal hippocampal neurones by use of patch clamp recordings and a fast drug application system.Three different groups of neurones could be distinguished with respect to the type of modulation obtained with 10 μM EB: EB was either a predominant inhibitor of desensitization (13% of the neurones), a pre...

  3. Intravenous injection of Evans Blue labels magnocellular neuroendocrine cells of the rat supraoptic nucleus in situ and after dissociation.

    Science.gov (United States)

    Weiss, M L; Cobbett, P

    1992-01-01

    Previous work has demonstrated that intravenous injection of neuronal tracers, e.g. horseradish peroxidase or Fast Blue, can retrogradely label neurons in brain areas that project outside the blood-brain barrier, e.g. magnocellular neuroendocrine neurons of the hypothalamus. Here we have shown that 24 h after intravenous injection of the fluorescent retrograde tracer Evans Blue, the same population of magnocellular neuroendocrine neurons is labeled in the paraventricular, supraoptic and accessory magnocellular nuclei. Parvicellular neuroendocrine cells in the paraventricular nuclei are also labeled. Most Evans Blue-labeled magnocellular neuroendocrine cells in the supraoptic nucleus could be stained immunocytochemically for neurophysins, suggesting that these neurons continue to produce their peptide hormones after taking up the fluorescent dye. Ultrastructural observation of supraoptic cells retrogradely labeled with Evans Blue shows that 95% of the neurons appeared healthy. There was no ultrastructural evidence of degeneration, hyperstimulation, or interruption of the axoplasmic flow. Labeling the neuroendocrine cells with Evans Blue did not alter the size of magnocellular cells, the animal's fluid balance or ingestive behavior. Following enzymatic/mechanical dissociation of the supraoptic nucleus from animals that had been injected with Evans Blue 24 h previously, phase-bright neurons that often contained fluorescent material were observed, thus identifying these neurons as neuroendocrine. Recording from identified neuroendocrine cells showed that these neurons generated spontaneous or current-evoked overshooting action potentials with an afterhyperpolarization and had negative resting membrane potentials. Action potential broadening, a feature of magnocellular neurons, was observed during bursts of action potentials elicited by depolarizing current injection. Taken together, this work would suggest that Evans Blue is non-toxic at the doses used and that it

  4. Distinct patterns of cerebral extravasation by Evans blue and sodium fluorescein in rats.

    Directory of Open Access Journals (Sweden)

    Lola Fenghuei Yen

    Full Text Available The Evans blue dye (EBD; 961 Da and the sodium fluorescein dye (NaF; 376 Da are commonly used inert tracers in blood-brain barrier (BBB research. They are both highly charged low molecular weight (LMW tracers with similar lipophobic profiles. Nevertheless, the EBD binds to serum albumin (69,000 Da to become a high molecular weight (HMW protein tracer when injected into the circulation, whereas the NaF remains an unbound small molecule in the circulation. In this study, rats were injected with equal doses of either EBD or NaF to monitor their blood and tissue distribution. The EBD was largely confined to the circulation with little accumulation in the peripheral organ and even less accumulation in the central tissue, whereas the NaF distributed more evenly between the blood and the peripheral organ but was also largely excluded from the central tissue. Importantly, the EBD crossed the BBB most effectively at the prefrontal cortex and the cerebellum, and most poorly at the striatum. In marked contrast, the NaF was evenly distributed throughout the brain. Finally, the EBD exhibited this same peculiar tissue distribution profile when administered by either bolus injection or slow infusion. Our study suggests that different regions of the brain are equally permeable to LMW inert dyes like the NaF, but are markedly different in permeability to HMW proteins such as EBD-labelled serum albumin.

  5. Evans blue dye-enhanced imaging of the brain microvessels using spectral focusing coherent anti-Stokes Raman scattering microscopy.

    Directory of Open Access Journals (Sweden)

    Bo-Ram Lee

    Full Text Available We performed dye-enhanced imaging of mouse brain microvessels using spectral focusing coherent anti-Stokes Raman scattering (SF-CARS microscopy. The resonant signals from C-H stretching in forward CARS usually show high background intensity in tissues, which makes CARS imaging of microvessels difficult. In this study, epi-detection of back-scattered SF-CARS signals showed a negligible background, but the overall intensity of resonant CARS signals was too low to observe the network of brain microvessels. Therefore, Evans blue (EB dye was used as contrasting agent to enhance the back-scattered SF-CARS signals. Breakdown of brain microvessels by inducing hemorrhage in a mouse was clearly visualized using backward SF-CARS signals, following intravenous injection of EB. The improved visualization of brain microvessels with EB enhanced the sensitivity of SF-CARS, detecting not only the blood vessels themselves but their integrity as well in the brain vasculature.

  6. Chemical Conjugation of Evans Blue Derivative: A Strategy to Develop Long-Acting Therapeutics through Albumin Binding.

    Science.gov (United States)

    Chen, Haojun; Wang, Guohao; Lang, Lixin; Jacobson, Orit; Kiesewetter, Dale O; Liu, Yi; Ma, Ying; Zhang, Xianzhong; Wu, Hua; Zhu, Lei; Niu, Gang; Chen, Xiaoyuan

    2016-01-01

    The efficacy of therapeutic drugs is highly dependent on their optimal in vivo pharmacokinetics. Albumin conjugation is considered to be one of the most effective means of protracting the short lifespan of peptides and proteins. In this study, we proposed a novel platform for developing long lasting therapeutics by conjugating a small molecular albumin binding moiety, truncated Evans blue, to either peptides or proteins. Using the anti-diabetic peptide drug Exendin-4 as a model peptide, we synthesized a new long-acting Exendin-4 derivative (denoted as Abextide). Through complexation with albumin in situ, the biological half-life of Abextide was significantly extended. The hypoglycemic effect of Abextide was also improved remarkably over Exendin-4. Thus, Abextide has considerable potential to treat type 2 diabetes. This strategy as a general technology platform can be applied to other small molecules and biologics for the development of long-acting therapeutic drugs.

  7. Synthesis and radioiodination of di-iodo-Evan's blue via isotopic exchange reaction in the molten state and evaluation of the kinetics

    Energy Technology Data Exchange (ETDEWEB)

    El-Azony, K.M. [Research Center Juelich (Germany). Inst. of Nuclear Chemistry]|[Hot Lab. Center, Cairo (Egypt). Radioactive Isotopes and Generators Dept.; Bier, D.; Coenen, H.H. [Research Center Juelich (Germany). Inst. of Nuclear Chemistry

    2004-07-01

    Many aryl halides were synthesized from aryl amines such as iodo-trypan, iodo-methylene blue and iodo-toluidine. Methylene blue and toludine blue are phenothiazinium dyes and were used to localize parathyroid glands visually during surgery. Radioiodination of these compounds by using iodine-123 analogues for scintgraphic localization of parathyroids was reported. Radiolabelled dyes administered may also localize in tumor tissues. Evan's blue dye was used to study altered sarcolemmal permeability in dystrophic muscle fibers, and in animals to study muscular dystrophy. In this work Diiodo-Evan's blue was synthesized via Sandmeyer reaction and characterized by mass spectrum analysis. A procedure for labelling DIEB with Na{sup 131}I via isotopic exchange in molten medium was developed. The labelling conditions studied for the isotopic exchange of {sup 131}I-for-I in DIEB included the effect of temperature and solvents (melt of acetamide, benzoic and pivalic acid). Kinetic studies were performed to obtain [{sup 131}I] DIEB with more reliable reaction conditions. Quality control for the final product ([{sup 131}I] DIEB) was performed by HPLC. (orig.)

  8. Removal of Evans Blue and Yellow thiazole dyes from aqueous solution by Mg-Al-CO3 Layered Double Hydroxides as anion-exchanger

    Directory of Open Access Journals (Sweden)

    Mohamed Bouraada

    2014-06-01

    Full Text Available Mg-Al-CO3 Layered double hydroxide (LDH was prepared by co-precipitation method at constant pH, and subsequently used to remove Evans Blue (EB and Yellow thiazole (YT dyes from aqueous solutions. The obtained material was characterized by powder X-ray diffraction (PXRD, Fourier transform infrared spectroscopy (FTIR, thermal analysis and BET. The kinetic and equilibrium aspects of sorption of the anionic dyes from aqueous solution by Mg-Al-CO3 were investigated in batch mode. The sorption kinetic data were found to be consistent with the pseudo-second-order model. Data for YT and EB sorption by Mg-Al-CO3 were fitted better by the Langmuir equation than by the Freundlich equation based on the determination coefficient values R2 . The maximum adsorption capacities of 222.2 mgg-1 for Yellow thiazole and 107.5 mgg-1 for Evans blue. The thermodynamic parameters including Gibbs free energy (G°, standard enthalpy change (H°, and standard entropy change (S° for the process were calculated. The negative G° value indicates the spontaneity of the removal process.

  9. Evans blue staining reveals vascular leakage associated with focal areas of host-parasite interaction in brains of pigs infected with Taenia solium.

    Science.gov (United States)

    Marzal, Miguel; Guerra-Giraldez, Cristina; Paredes, Adriana; Cangalaya, Carla; Rivera, Andrea; Gonzalez, Armando E; Mahanty, Siddhartha; Garcia, Hector H; Nash, Theodore E

    2014-01-01

    Cysticidal drug treatment of viable Taenia solium brain parenchymal cysts leads to an acute pericystic host inflammatory response and blood brain barrier breakdown (BBB), commonly resulting in seizures. Naturally infected pigs, untreated or treated one time with praziquantel were sacrificed at 48 hr and 120 hr following the injection of Evans blue (EB) to assess the effect of treatment on larval parasites and surrounding tissue. Examination of harvested non encapsulated muscle cysts unexpectedly revealed one or more small, focal round region(s) of Evans blue dye infiltration (REBI) on the surface of otherwise non dye-stained muscle cysts. Histopathological analysis of REBI revealed focal areas of eosinophil-rich inflammatory infiltrates that migrated from the capsule into the tegument and internal structures of the parasite. In addition some encapsulated brain cysts, in which the presence of REBI could not be directly assessed, showed histopathology identical to that of the REBI. Muscle cysts with REBI were more frequent in pigs that had received praziquantel (6.6% of 3736 cysts; n = 6 pigs) than in those that were untreated (0.2% of 3172 cysts; n = 2 pigs). Similar results were found in the brain, where 20.7% of 29 cysts showed histopathology identical to muscle REBI cysts in praziquantel-treated pigs compared to the 4.3% of 47 cysts in untreated pigs. Closer examination of REBI infiltrates showed that EB was taken up only by eosinophils, a major component of the cellular infiltrates, which likely explains persistence of EB in the REBI. REBI likely represent early damaging host responses to T. solium cysts and highlight the focal nature of this initial host response and the importance of eosinophils at sites of host-parasite interaction. These findings suggest new avenues for immunomodulation to reduce inflammatory side effects of anthelmintic therapy.

  10. Perilesional Inflammation in Neurocysticercosis - Relationship Between Contrast-Enhanced Magnetic Resonance Imaging, Evans Blue Staining and Histopathology in the Pig Model.

    Science.gov (United States)

    Cangalaya, Carla; Bustos, Javier A; Calcina, Juan; Vargas-Calla, Ana; Suarez, Diego; Gonzalez, Armando E; Chacaltana, Juan; Guerra-Giraldez, Cristina; Mahanty, Siddhartha; Nash, Theodore E; García, Hector H

    2016-07-01

    Disease manifestations in neurocysticercosis (NCC) are frequently due to inflammation of degenerating Taenia solium brain cysts. Exacerbated inflammation post anthelmintic treatment is associated with leakage of the blood brain barrier (BBB) using Evans blue (EB) staining. How well EB extravasation into the brain correlates with magnetic resonance imaging (MRI) using gadolinium (Gd) enhancement as a contrast agent and pericystic inflammation was analyzed in pigs harboring brain cysts of Taenia solium. Three groups of 4 naturally infected pigs were assessed. The first and second groups were treated with both praziquantel plus albendazole and sacrificed two and five days post treatment, respectively. A third untreated group remained untreated. Pigs were injected with EB two hours prior to evaluation by Gd-enhanced T1-MRI, and euthanized. The EB staining for each cyst capsule was scored (EB grades were 0: 0%; 1: up to 50%; 2: over 50% but less than 100%; 3: 100%). Similarly, the Gd enhancement around each cyst was qualitatively and quantitatively scored from the MRI. The extent of pericystic inflammation on histology was scored in increasing severity as IS1, IS2, IS3 and IS4. Grade 3 EB staining and enhancement was only seen in treated capsules. Also, treated groups had higher Gd intensity than the untreated group. Grades of enhancement correlated significantly with Gd enhancement intensity. EB staining was correlated with Gd enhancement intensity and with IS4 in the treated groups. These correlations were stronger in internally located cysts compared to superficial cysts in treated groups. EB staining and Gd enhancement strongly correlate. The intensity of enhancement determined by MRI is a good indication of the degree of inflammation. Similarly, EB staining highly correlates with the degree of inflammation and may be applied to study inflammation in the pig model of NCC.

  11. [Evans syndrome in infants].

    Science.gov (United States)

    Flores-Montes, Olivia Alejandra; Escobar-Orduño, Martha Cecilia; Lozano-Garcidueñas, Mónica; Valle-Leal, Jaime Guadalupe

    Evans syndrome is characterized by the reduction of at least two blood cell lineages in the absence of other diagnoses; it was previously described as the simultaneous or sequential development of autoimmune hemolytic anemia and immune thrombocytopenia with unknown etiology. An incidence of 37% and mortality rate of 10% were reported for Evans syndrome. We report the clinical presentation and evolution of Evans syndrome in two infants who were initially diagnosed with immune thrombocytopenia. The clinical diagnosis was supported on complementary studies, where hematological disorders were corroborated. Both cases received treatment with steroids and intravenous immunoglobulin. For the management of children with thrombocytopenia, the pediatrician must analyze for other cell lineage disorders. In the cases that we report here, we found the presence of autoimmune hemolytic anemia and monocytosis. Therefore, infectious and immunological studies must be included. The first-line treatment of choice are steroids, and intravenous immunoglobulin can be considered if severe immune thrombocytopenia is associated, as observed in these cases. Copyright © 2017 Hospital Infantil de México Federico Gómez. Publicado por Masson Doyma México S.A. All rights reserved.

  12. Lyn Evans decelerates!

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    After more than 40 years at CERN, 15 of which were dedicated to ensuring that the LHC comes to completion, Lyn Evans is retiring. The Imperial College Professor and recently-elected Fellow of the British Royal Society has set himself new challenges, but plans to keep strong links with CERN. His big thank you goes to the many hundreds of people who built one of the most complex scientific instruments ever conceived by mankind. Note from the Editor: It is unusual for the Bulletin to adopt a question-and-answer style. However, we recognise that, with someone of Lyn’s stature, the appropriate thing to do is simply to give him the floor. Bulletin: Lyn, are you really leaving CERN? I am retiring but I will not completely lose contacts with CERN and the LHC. It’s time to slow down for me now but I will join the CMS Collaboration. I will help with the link between the experiment and the machine. Bulletin: After many years as LHC Project Manager...

  13. Recreation conflicts on Mt. Evans

    Science.gov (United States)

    Jerry J. Vaske; Karin Wittmann; Susan Laidlaw; Maureen P. Donnelly

    1995-01-01

    This study examines recreation conflict at Mt. Evans, Colorado; a high visibility area that attracts both hunters and non-hunters. Two types of conflict were distinguished: goal interference and conflict of values. Data were obtained from a series of on-site and mailed surveys. For hunting related events (e.g. seeing an animal being shot, hearing...

  14. Carbon Stars T. Lloyd Evans

    Indian Academy of Sciences (India)

    T. Lloyd Evans. SUPA, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews,. Fife KY16 9SS, UK. ...... magnitude of the parent galaxy. The carbon stars are of two types, the ..... individual stars by different techniques and disagreements continued into more recent times. Lambert et al. (1986) ...

  15. Awards for Lyn Evans and Philippe Lebrun

    CERN Multimedia

    2007-01-01

    Lyn Evans has received the American Physical Society’s Robert R. Wilson Prize, while Philippe Lebrun has been awarded an honorary doctorate by the Wrocław University of Technology in Poland. Lyn Evans in front of an LHC dipole magnet. Philippe Lebrun (centre) with the Dean of the Faculty of mechanical and power engineering of the Wrocław University during the ceremony (courtesy of Laurent Tavian).Numerous honours are going to the LHC and those behind it even before this exceptional machine begins operation. The LHC Project Leader, Lyn Evans, has recently been awarded the "Robert R. Wilson Prize for Achievement in the Physics of Particle Accelerators" by the American Physical Society (APS). According to the citation, the prize was awarded "for a sustained career of technical innovation and leadership in the SPS proton-antiproton collider, culminating in the construction and commissioning of the LHC&am...

  16. Portrait of Evan Parker (Silver and Gold)

    OpenAIRE

    Henderson, Neil

    2009-01-01

    This film explores the musical technique of Evan Parker and the effect it has on his soprano saxophone. The camera is placed below the instrument so it can catch the light entering the instrument as it is played. There is a direct correlation between what we see and what we hear, each light has its counterpart in sound.

  17. Síndrome de Evans en lactantes

    OpenAIRE

    Olivia Alejandra Flores-Montes; Martha Cecilia Escobar-Orduño; Mónica Lozano-Garcidueñas; Jaime Guadalupe Valle-Leal

    2017-01-01

    Introducción: El síndrome de Evans se caracteriza por la disminución de, al menos, dos líneas celulares en ausencia de otros diagnósticos. Anteriormente, se definía como el desarrollo simultáneo o secuencial de trombocitopenia inmune primaria y anemia hemolítica autoinmune sin etiología específica. Se ha reportado una incidencia del 37% y una mortalidad del 10% de este síndrome. Casos clínicos: Se presenta la información clínica y la evolución del síndrome de Evans en dos pacientes lactant...

  18. Obituary: David Stanley Evans, 1916-2004

    Science.gov (United States)

    Bash, Frank N.

    2005-12-01

    David Stanley Evans died on 14 November 2004 in Austin, Texas. He was a noted observational astronomer whose career was divided between South Africa and Texas. He also used the extensive historical collections at the University of Texas to write several books on the history of astronomy. He was born in Cardiff, Wales on 28 January 1916. David received his BA degree in mathematics in 1937 from Kings College, Cambridge. He became a PhD student at Cambridge Observatory in 1937, and was one of Sir Arthur Eddington's last surviving students. He received his PhD degree in 1941 with a dissertation entitled, "The Formation of the Balmer Series of Hydrogen in Stellar Atmospheres." He was a conscientious objector to war and, thus, spent the war years at Oxford working with physicist Kurt Mendelssohn on medical problems, involving cadavers, relating to the war. During these years, David was scientific editor of "Discovery", and he was editor of "The Observatory". David left England in 1946 in order to take up the position of Second Assistant at the Radcliffe Observatory, Pretoria, South Africa. He and H. Knox Shaw were the entire staff after R. O. Redman left, and they aluminized and installed the mirrors in the 74-inch telescope. His notable scientific contribution was to use lunar occultations to measure stellar angular diameters during the 1950s. He succeeded in determining the angular diameter of Antares and determined that Arcturus was not circular but had an elliptical shape. The elliptical shape was later shown to be an instrumental artifact, but the utility of using lunar occultations to measure stellar diameters and stellar multiplicity was conclusively demonstrated. T. Gold presented David's paper on lunar occultation angular diameters at the January 1953 meeting of the Royal Astronomical Society. For the rest of his life, David resented Gold's remarks, because he felt that he had been ridiculed. By 1953, David Evans was Chief Assistant at the Royal Observatory

  19. Sensory awareness and social work [Michelle Evans and Andrew Whittaker

    OpenAIRE

    Watling, Sue

    2012-01-01

    Sensory Awareness and Social Work by Michelle Evans and Andrew Whittaker; Book Review for Practice: Social Work in Action Journal, Sensory Awareness and Social Work M. Evans and A. Whittaker Exeter: Learning Matters, 2010 144 pp. £17.99 (pb), ISBN: 978 1 84445 291 0

  20. Dermatomyositis associated with generalized subcutaneous edema and Evans syndrome.

    Science.gov (United States)

    Jung, Kyu Dong; Kim, Pyoung Su; Park, Hae Young; Kim, Cho Rok; Byun, Ji Yeon; Lee, Dong Youn; Lee, Joo Heung; Yang, Jun-Mo; Lee, Eil-Soo

    2012-01-01

    Although periorbital edema is a common manifestation of dermatomyositis (DM), generalized subcutaneous edema associated with DM is extremely rare. Evans syndrome is an autoimmune disease in which an individual's antibodies attack one's own red blood cells and platelets. Evans syndrome is rarely a presenting feature of DM. DM has been rarely reported to be associated with either generalized edema or Evans syndrome. We report the case of a 52-year-old Korean woman who presented with generalized subcutaneous edema, an erythematous rash, dysphagia, and proximal muscle weakness, and subsequently developed features of Evans syndrome. Treatment with high-dose glucocorticoids and an immunosuppressive agent controlled the DM, the generalized subcutaneous edema, and the Evans syndrome. Copyright © 2009 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.

  1. Postpartum Blues

    Science.gov (United States)

    ... Home > Pregnancy > Postpartum care > Baby blues after pregnancy Baby blues after pregnancy E-mail to a friend Please ... tell your health care provider. What are the baby blues? Baby blues are feelings of sadness a woman ...

  2. Soul / Randy Becker, Bill Evans, Evelin Samuel ; interv. Sven Sapelson

    Index Scriptorium Estoniae

    Becker, Randy

    2007-01-01

    The Soulbop Bandi rajajad Randy Becker ja Bill Evans ning meie Evelin Samuel gospeli ja rhytmblues'i juurtega soulist. Lk. 72-73 Inessa Josingu ja Ande Kaalepi souliteemaline fotolavastusega ruumikujundus

  3. Judge for yourself: reply to Evans and Buehner (2011).

    Science.gov (United States)

    Kareev, Yaakov; Fiedler, Klaus

    2011-11-01

    In their comment, Evans and Buehner (2011) maintained that Fiedler and Kareev's (2006) conclusion that decision quality does not always increase with the size of information sample is wrong in every respect. They claimed, first, that the decision model proposed by Fiedler and Kareev is normatively incorrect and is not supported by earlier findings; second, that Fiedler and Kareev misinterpreted or misrepresented their own data, which show in fact a large-sample advantage; and third, that it is not true that small samples lead to clear data; rather, when clear data are observed people make do with small samples. In this rebuttal, we refute all these claims. First, the issue is whether the model is descriptively, not normatively, correct. Furthermore, earlier data are commensurate with our, not Evans and Buehner's, model. Second, our data do support our conclusion; it is Evans and Buehner's dismissal of some of our data that led them to their conclusions. Finally, Evans and Buehner's third point is discussed explicitly and at length in the original article. However, whereas Evans and Buehner only reiterate this point (and present it as novel), we continue from there and show that small samples are likely to result in clear data.

  4. Pregnancy and Evans´ syndrome: case report

    Directory of Open Access Journals (Sweden)

    Santiago Artucio

    2015-12-01

    Full Text Available Evans´ syndrome is the coexistence of autoimmune thrombocytopenia with autoimmune hemolytic anemia. It is rarely found during the course of a pregnancy. This makes treatment options more difficult, since some therapeutic drugs are teratogenic. The effects of Evans´ syndrome in the fetus and newborn are unknown given the low number of reported cases. We report the case of a patient with preconceptional diagnosis of Evans´ syndrome, who develops a hemolytic crisis during the course of a pregnancy, and diagnosis of intrauterine growth restriction (IUGR, treated at Clínica Ginecotocológica “A” at the Pereira Rossell Hospital Center, in Montevideo, Uruguay. Treatment options and evolution are analyzed, as well as previous reports.

  5. Prussian Blue

    Science.gov (United States)

    ... Groups Resources for Emergency Health Professionals Training & Education Social Media What’s New Preparation & ... Prussian blue work? Who can take Prussian blue? How is Prussian blue given? What are the side effects of Prussian blue? Where can I get Prussian ...

  6. Diplodia natalensis , Pole Evans: a causal agent of citrus gummosis ...

    African Journals Online (AJOL)

    Isolations were made from the barks of gummosis-infected citrus trees from orchards of the University of Ghana Agricultural Research Station at Kade. The isolation media used were 1.5% water agar, 1.5% water agar + nystatin and 1.5% water agar + benomyl. Four isolates including Diplodia natalensis Pole Evans, ...

  7. Posthumous Pardons, the Home Office and the Timothy Evans Case

    OpenAIRE

    Rubin, Gerry

    2007-01-01

    Examines the legal issues surrounding the exercise of the prerogative of mercy to grant posthumous pardons either to those convicted of a capital offence or those executed for offences under military law, specifically during the First World War. Focuses on the policy considerations leading to the Home Secretary’s decision to recommend the grant of a posthumous pardon for Timothy Evans in 1966.

  8. Diplodia natalensis Pole Evans, the causal agent of citrus gummosis ...

    African Journals Online (AJOL)

    Four isolates including Diplodia natalensis Pole Evans, Fusarium solani Appel + Wr., and two other identified fungi were obtained. The two fungi were unidentified on Potato Dextrose Agar (PDA). When the isolates were tested for pathogenicity, only D. natalensis induced the disease symptoms in the inoculated ...

  9. Experience with Evans syndrome in an academic referral center

    Directory of Open Access Journals (Sweden)

    José Carlos Jaime-Pérez

    2015-08-01

    Full Text Available OBJECTIVE: To document the experience of one referral service with patients diagnosed with Evans syndrome, the treatment and response and to briefly review current treatment strategies and results.METHODS: Patients enrolled in this study fulfilled criteria for Evans syndrome. Data were retrieved from the clinical files and electronic databases of the Department of Hematology, Hospital Universitario "Dr. José Eleuterio González". Treatment modalities and response and the use of additional therapies were evaluated. The literature was reviewed in the context of the clinical course of the studied patients.RESULTS: Six patients were diagnosed with Evans syndrome in the study period. Patient 1 was treated with steroids, relapsed twice and was again treated with steroids. Patient 2 treated initially with steroids plus intravenous immunoglobulin was subsequently lost to follow-up. A good response was achieved in Patients 3 and 4, who were treated with steroids plus rituximab; patient 4 also received danazol as a second-line therapy. However both relapsed and subsequently underwent splenectomy at ten and nine months, respectively. One patient, number 5, treated with steroids, danazol and rituximab did not relapse within four years of follow-up and Patient 6, who received steroids plus danazol did not relapse within three years of follow-up.CONCLUSION: Evans syndrome is an uncommon hematologic condition rarely diagnosed and not widely studied. Clinicians must have it in mind when evaluating a patient with a positive direct antiglobulin test, anemia and thrombocytopenia, since prognosis depends on its early recognition and opportune therapy, but even this leads to variable results.

  10. Kind of Blue - Europa Blues

    DEFF Research Database (Denmark)

    Mortensen, Tore; Kirkegaard, Peter

    2009-01-01

    Bidraget reflekterer over sammenhænge mellem to værker fra det musikalske og litterære område. Det drejer sig om Miles Davis' Kind of Blue fra 1959 og Arne Dahls krimi, Europa Blues fra 2001. Den grundlæggende indfaldsvinkel er det performative, den frie, men samtidigt disciplinerede musikalske...

  11. Re-development of the Mount Evans Womble Observatory

    Science.gov (United States)

    Stencel, Robert E.

    2017-01-01

    Mount Evans in the Colorado Front Range hosts one of the highest altitude observatories in the USA, at an elevation of 14,148 ft (4,312 m). The observatory is operated under a Forest Service use permit, recently renewed for another 30 years. At times, observing conditions (seeing, water vapor column, etc.) can be as good as anywhere. The existing twin 0.72 m f/21 R-C telescopes are solar powered and internet connected. However, jet stream winds in 2012 destroyed the 15 year old, 22.5 ft diameter Ash dome. The replacement, custom dome design/install was rushed, and suffers from a number of flaws. Given that, plus the aging telescope and operating system, we are planning, and seeking partners and investor funds, to re-develop the facility. Facets of this may include replacing the twin apertures with a single full-aperture telescope for remote operations and sky monitoring, replacing the flawed dome with an innovative dome design, renewable power upgrades, and outreach programs for the many thousands of mountain visitors seasonally. As elsewhere, we are grappling with increases in atmospheric water vapor and out-of-control regional light pollution growth, but believe that the site continues to hold great potential. Interested parties are invited to contact the first author for further information. Website: http://www.du.edu/~rstencel/MtEvans .

  12. Embarazo y Síndrome de Evans: a propósito de un caso

    OpenAIRE

    Artucio, Santiago; Silva Ledesma, Rosina; Ben, Sebastián; Fiol, Verónica; Cóppola, Francisco; Clínica Ginecotocológica "A" Prof. Dr. Briozzo, Facultad de Medicina, Universidad de la República. Centro Hospitalario Pereira Rossell, Montevideo, Uruguay.

    2015-01-01

    El síndrome de Evans es la coexistencia de trombocitopenia autoinmune con anemia hemolítica autoinmune. Raramente se presenta durante el curso de un embarazo. Esto dificulta las opciones terapéuticas, dado que algunos de los agentes utilizados para el tratamiento son teratogénicos. Los efectos del síndrome de Evans en el feto y recién nacido se desconocen dado el escaso número de casos publicados.Presentamos el caso de una paciente con diagnóstico preconcepcional de síndrome de Evans, que pre...

  13. Systematics of the genus Zinaida Evans, 1937 (Hesperiidae: Hesperiinae: Baorini).

    Science.gov (United States)

    Tang, Jing; Huang, Zhenfu; Chiba, Hideyuki; Han, Yuke; Wang, Min; Fan, Xiaoling

    2017-01-01

    Traditionally, species of the genus Zinaida were assigned to the genus Polytremis, until molecular evidence revealed that the former is a distinct genus. Nine species in Polytremis sensu Evans have since been removed and assigned to Zinaida; however, there is still uncertainty as to the taxonomic status of an additional seven Polytremis species. Moreover, the interspecific relationships within Zinaida have remained unresolved. To further investigate the taxonomic statuses and interspecific relationships within Zinaida, a molecular phylogeny of most species of Zinaida and its allies was inferred based on regions of the mitochondrial COI-COII and 16S and nuclear EF-1α genes (3006 bp). The results revealed that Zinaida is monophyletic and consists of four intra-generic clades that correspond to morphological characteristics. Clade A (Z. suprema group) consists of P. kiraizana, Z. suprema, and P. gigantea, with the latter two as sister species. Clade B (Z. nascens group) consists of seven species, and is the sister group of Clade C (Z. pellucida group), which comprises sister species Z. pellucida and Z. zina. In Clade B, Z. caerulescens and Z. gotama, and Z. theca and Z. fukia are sister species, respectively. On the basis of our molecular evidence and morphological features, we have moved P. gigantea, P. kiraizana, P. jigongi, and P. micropunctata to the genus Zinaida as new combinations. We review morphological characteristics and discuss the distribution of each of these groups in the light of our phylogenetic hypothesis, and provide a comprehensive taxonomic checklist.

  14. Síndrome de Evans de aparición súbita en el embarazo Evans Syndrome of Sudden onset in Pregnancy

    OpenAIRE

    Jorge Barboza-Retana; Pilar Bogantes-Ledezma; William Carballo-Gutiérrez; Jorge Díaz-Camacho

    2011-01-01

    La trombocitopenia complica hasta el 10% de los embarazos. El síndrome de Evans es la coexistencia de la trombocitopenia inmune con anemia hemolítica autoinmune. Se presenta un caso de síndrome de Evans durante el embarazo, complicado por preclampsia y neutropenia fetal. Una mujer de 20 años de edad, previamente sana, primigesta, que presentó a las 34 semanas de gestación dolor epigástrico, trombocitopenia y pre eclampsia. Se le realizó parto por cesárea, por presentar síndrome de HELLP. A lo...

  15. Lateral hindfoot instability treated with the Evans tenodesis: a biomechanical analysis

    DEFF Research Database (Denmark)

    Kjaersgaard-Andersen, P.; Madsen, F.; Frich, Lars Henrik

    1990-01-01

    The stabilizing effect of the Evans tenodesis on movements in the tibiotalocalcaneal joint complex was studied in 10 amputation specimens, using a kinesiologic testing device. The tenodesis was tested following solitary lesion of the anterior talofibular ligament and after combined lesions...... in the neutral position, the Evans tenodesis cannot reconstruct normal hindfoot kinematics, irrespective of the extent of ligamentous damage. However, severe instability in adduction and internal rotation, both part of clinical supination, were effectively prevented by the tenodesis....

  16. Revisão de Elbella Evans e gêneros afins (Lepidoptera, Hesperiidae, Pyrrhopyginae Revision of Elbella Evans and related genera (Lepidoptera, Hesperiidae, Pyrrhopyginae

    Directory of Open Access Journals (Sweden)

    Olaf H. H Mielke

    1994-01-01

    Full Text Available A systematic study of the genera Microceris Watson, 1893, Elbella Evans, 1951, Parelbella. gen.n. (type species: Hesperia polyzona [Latreille, 1824], Pseudocroniades. gen.n. (type species: Ericides (sic machaon Westwood, [1852] and Protelbella, gen.n. (type species: Pyrrhopyga (sic alburna Mabille, 1891, a natural group of the Pyrrhopyginae, here called "Elbella Complex", is presented. The following are spp.n. and sspp.n.: Elbella intersecta paraensis, Brazil: Pará; Elbella intersecta rufitegula, Brazil: Pernambuco, Bahia, Minas Gerais, Espírito Santo and Rio de Janeiro State; Elbella viriditas boliviana, Bolivia: La Paz; Elbella lampra albociliata, Brazil: São Paulo, Paraná and Santa Catarina: Elbella azeta giffordi, Brazil: Distrito Federal and São Paulo; Elbella patrobas mexicana, Mexico: Chiapas and Quintana Roo; Elbella patrobas evansi, Colombia: Cauca, Caldas and Boyaca; Elbella patrobas tingo, Brazil: Rondonia and Peru: Huanuco and Madre de Dios; Elbella patrobas amazonica, Brazil: Amazonas; Parelbella peruana, Peru: Junin; Pseudocroniades machaon seabrai, Brazil: Rio de Janeiro State; Protelbella alburna brasiliensis, Brazil: Amazonas, Rondonia and Mato Grosso, and French Guiana: Montagne aux Cheveaux. The following genus is a syn.n.: Hegesippe Evans, 1951 of Elbella Evans, 1951. The following species and subspecies are syn.n.: Pyrrhopyga (sic semidentata Mabille, 1877 and Elbella intersecta ilona Evans, 1951 of Elbella intersecta intersecta (Herrich-Schäffer, 1869: Pyrrhopyge carriae Bell, 1931 of Elbella viriditas viriditas (Skinner, 1920; Pyrrhopyga (sic menecrates Mabille, 1878 and Pyrrhopyge margimmiscus Hayward, 1935 of Elbella lampra lampra (Hopffer, 1874; Elbella etna moda Evans, 1951 of Elbella etna Evans, 1951; Jemadia umbrata Mabille & Boullet, 1908 of Elbella patroclus patroclus (Plötz, 1879; Pyrrhopyga (sic jamina Butler, 1870 and Pyrrhopyga (sic zimra Hewitson, 1871 of Parelbella ahira ahira (Hewitson, 1857; Elbella

  17. Jung, Evans-Wentz and various other gurus.

    Science.gov (United States)

    McGuire, William

    2003-09-01

    How did Jung become deeply concerned with Asian religions and particularly with the Tibetan Buddhism of a Welshman from Trenton, New Jersey? Could that man be considered one of Jung's gurus? This essay begins six years after Jung, at twenty, was admitted to the medical school of Basel University and became a member of the Zofingiaverein, a student society. The next year he gave the first of a series of lectures on the interpretation of Christ as the model of the 'god-man', like the Apostle Paul, Confucius, Zoroaster and the Buddha, who was 'drummed into the Hindu boy'. (Jung's Zofingia Lectures were discovered only after his death, in 1961, and were published in English in 1983). The present essay discusses Jung's early Buddhist interest as displayed in The Psychology of the Unconscious (finally, in a revision, entitled Symbols of Transformation), in Psychological Types and later in his foreword of the Wilhelm translation of the I Ching. Jung was influenced by the gurus Richard Wilhelm and his son Hellmut, the scholar J. W. Hauer (with whom he later broke off relations because of Hauer's Nazi politics), the indologist Heinrich Zimmer, and the Zen master D. T. Suzuki. Walter Yeeling Wentz was born in Trenton in 1878 and brought up in his family's theosophist faith. The Wentzes moved to San Diego in 1900, and Walter added his mother's Celtic surname, Evans, to the German Wentz. He was educated at Stanford University and travelled in Europe, studying Celtic folklore, and widely in the Near East, Tibet, India, and Oxford--studying religions everywhere and editing Tibetan books. He lived his last decades in San Diego and conducted a correspondence with Jung, while living in a cheap hotel, or in an ashram.

  18. Evans syndrome and systemic lupus erythematosus: clinical presentation and outcome.

    Science.gov (United States)

    Costallat, Guilherme Lavras; Appenzeller, Simone; Costallat, Lilian Tereza Lavras

    2012-07-01

    To review the clinical, laboratory and outcome features of Evans syndrome (ES) in systemic lupus erythematosus (SLE) patients. We reviewed the charts of 953 SLE patients followed up regularly at our service. ES was defined as the presence of hemolytic anemia and thrombocytopenia concomitantly or sequentially. Clinical and laboratory manifestations occurring during the disease course, as well as concomitant diseases and survival was carefully reviewed. We identified ES in 26 of 953 (2.7%) SLE patients. Twenty-three were women with mean age at SLE diagnosis of 25.7 years. Four (15%) patients had disease onset before the age of 16. In the majority of patients (92%), immune thrombocytopenia and AIHA appeared simultaneously at the beginning of SLE. Active features of SLE were a frequent finding concomitant to ES, especially arthritis (77%), malar rash (61.5%), photosensitivity (57.6%), oral ulcers (34.6%), nephritis (73%), serositis (54%), neuropsychiatric (19%) and pulmonary (15%) manifestations. In addition to this multisystemic disease, 34.6% of our patients had an association with another autoimmune disease such as antiphospholipid syndrome. Recurrence of ES was observed in only four (15%) patients. After follow-up time of 8.72 years, 19 patients (73%) were in remission and seven (27%) patients died. ES is a rare manifestation in SLE, occurring in patients with severe multisystemic SLE manifestations. Treatment strategies frequently used in SLE contribute to longer disease remission and less frequent exacerbation than observed in the general population with ES. Copyright © 2011 Société française de rhumatologie. Published by Elsevier SAS. All rights reserved.

  19. Posthuman blues

    CERN Document Server

    Tonnies, Mac

    2013-01-01

    Posthuman Blues, Vol. I is first volume of the edited version of the popular weblog maintained by author Mac Tonnies from 2003 until his tragic death in 2009. Tonnies' blog was a pastiche of his original fiction, reflections on his day-to-day life, trenchant observations of current events, and thoughts on an eclectic range of material he culled from the Internet. What resulted was a remarkably broad portrait of a thoughtful man and the complex times in which he lived, rendered with intellige...

  20. Síndrome de Evans: Um Caso Refractário à Terapêutica

    OpenAIRE

    Lima, Sofia; Ferrão, Anabela; Morais, Anabela

    2014-01-01

    O síndrome de Evans é uma doença rara, caracterizada por anemia hemolítica e trombocitopenia imunes sem outra doença de base identificada. Tem um curso clínico crónico, com múltiplas recidivas, sendo muitas vezes refractário à terapêutica.Descreve-se um caso clínico de uma criança de 10 anos de idade com síndrome de Evans, refractário à terapêutica convencional com corticosteroides e imunoglobulina e com boa resposta à terapêutica com ciclosporina.

  1. Effectiveness of cyclosporine and mycophenolate mofetil in a child with refractory evans syndrome

    Directory of Open Access Journals (Sweden)

    Piero Farruggia

    2011-05-01

    Full Text Available Evans Syndrome is a rare autoimmune disease consisting of hemolytic anemia, thrombocytopenia and/or neutropenia. It may be associated with other autoimmune or lymphoproliferative diseases. Its course can be extremely serious and, rarely, even life-threatening; thus it represents a excellent treatment challenge for the pediatric hematologist. First line treatment consists of steroids and/or immunoglobulin; further therapy with rituximab, vincristine, cyclophosphamide and other immunosuppressive drugs can be considered in unresponsive patients. We describe a baby with refractory Evans Syndrome that was cured by prolonged administration of mycophenolate mofetil and remained disease-free for 4 years after the discontinuation of treatment.

  2. Comics Activism: An Interview with Comics Artist and Activist Kate Evans

    Directory of Open Access Journals (Sweden)

    Dominic Davies

    2017-11-01

    Full Text Available This is an interview with comics artist Kate Evans, author of 'Red Rosa' (2015 and 'Threads: From the Refugee Experience' (2017, as well as a number of other comics, about her recent work, which operates at the intersection of several of the most exciting genre developments in comics in recent years. In the interview Evans reflects on recent shifts in comics journalism, as well as other trends in the field such as the rise of graphic memoir, through examples taken from Evans’s own work as well as that of Joe Sacco, Lynda Barry, Alison Bechdel and others.

  3. Síndrome de Evans de aparición súbita en el embarazo

    OpenAIRE

    Jorge Barboza-Retana; Pilar Bogantes-Ledezma; William Carballo-Gutiérrez; Jorge Díaz-Camacho

    2011-01-01

    La trombocitopenia complica hasta el 10% de los embarazos. El síndrome de Evans es la coexistencia de la trombocitopenia inmune con anemia hemolítica autoinmune. Se presenta un caso de síndrome de Evans durante el embarazo, complicado por preclampsia y neutropenia fetal. Una mujer de 20 años de edad, previamente sana, primigesta, que presentó a las 34 semanas de gestación dolor epigástrico, trombocitopenia y pre eclampsia. Se le realizó parto por cesárea, por presentar síndrome de HELLP. A lo...

  4. Potential Applications of Using 68Ga-Evans Blue PET/CT in the Evaluation of Lymphatic Disorder: Preliminary Observations.

    Science.gov (United States)

    Zhang, Wei; Wu, Peilin; Li, Fang; Tong, Guansheng; Chen, Xiaoyuan; Zhu, Zhaohui

    2016-04-01

    Potentials of 68Ga-NEB as a PET tracer in the evaluation of a variety of lymphatic drainage disorders were analyzed. 68Ga-NEB was injected subcutaneously, and the PET/CT images were acquired in 13 patients with different suspected lymphatic drainage abnormality. The 68Ga-NEB PET/CT findings were compared with Tc-SC lymphoscintigraphy. 68Ga-NEB activity could be clearly observed in the lymphatic route on the PET/CT images from all the patients. In 5 (38.5%) of 13 patients tested, 68Ga-NEB PET/CT provided more information than the Tc-SC lymphoscintigraphy. 68Ga-NEB PET/CT can be used as an alternative of Tc-SC lymphoscintigraphy in the evaluation of lymphatic disorders, which enables fast results and might be more accurate than the conventional Tc-SC lymphoscintigraphy.

  5. Predatory Odor Disrupts Social Novelty Preference in Long-Evans Rats

    Science.gov (United States)

    Anderson, Matthew J.; Layton, William B.

    2012-01-01

    The present study examined the effects of predatory odor (cat urine) on social novelty preference in Long-Evans rats. Adult male subjects encountered a juvenile conspecific at training, were exposed to either clean cat litter (control) or litter soiled with cat urine (predatory odor), and were tested for social novelty preference. While the…

  6. Perturbations to the Lower Ionosphere by Tropical Cyclone Evan in the South Pacific Region

    DEFF Research Database (Denmark)

    Kumar, Sushil; Amor, Samir Nait; Chanrion, Olivier

    2017-01-01

    ) observed during tropical cyclone (TC) Evan, 9-16 December 2012 when TC was in the proximity of the transmitter-receiver links. We observed a maximum amplitude perturbation of 5.7dB on JJI transmitter during 16 December event. From Long Wave Propagation Capability model applied to three selected events we...

  7. Enantioselective Evans-Tishchenko Reduction of b-Hydroxyketone Catalyzed by Lithium Binaphtholate

    Directory of Open Access Journals (Sweden)

    Makoto Nakajima

    2011-06-01

    Full Text Available Lithium diphenylbinaphtholate catalyzed the enantioselective Evans-Tishchenko reduction of achiral b-hydroxyketones to afford monoacyl-protected 1,3-diols with high stereoselectivities. In the reaction of racemic b-hydroxyketones, kinetic optical resolution occurred in a highly stereoselective manner.

  8. Autoimmune hemolytic anemia, as part of Evans' syndrome, caused by cold reactive IgG autoantibodies

    NARCIS (Netherlands)

    Jaarsma, AS; Muis, N; DeGraaf, SSN

    1996-01-01

    We describe a boy with Evans' syndrome, consisting of immune thrombocytopenic purpura at age 2 and autoimmune hemolytic anemia (AIHA) at age 4. AIHA was caused by cold Ige autoantibodies. This is unusual because AIHA is generally associated with either warm IgG antibodies or cold IgM antibodies.

  9. On the behavior of Brønsted-Evans-Polanyi relations for transition metal oxides

    DEFF Research Database (Denmark)

    Vojvodic, Aleksandra; Vallejo, Federico Calle; Guo, Wei

    2011-01-01

    Versatile Brønsted-Evans-Polanyi (BEP) relations are found from density functional theory for a wide range of transition metal oxides including rutiles and perovskites. For oxides, the relation depends on the type of oxide, the active site, and the dissociating molecule. The slope of the BEP...

  10. BROMATE-INDUCED TRANSCRIPTIONAL CHANGES IN LONG-EVANS RAT KIDNEYS

    Science.gov (United States)

    Bromate-Induced Transcriptional Changes in Long-Evans Rat Kidneys.Ozone disinfection of surface waters containing bromide ion (Br-) results in the oxidation of bromide to bromate, which can be found in finished drinking water as a by-product. Potassium bromate (KBrO3)...

  11. Code Blue: The Blues as Medicine.

    Science.gov (United States)

    Purdy, W. Randolph

    1994-01-01

    Explores the basic features and background of "the blues" as a musical tool, or archetype, for understanding the universal condition of human suffering, for confronting diseases of disability and separation, and for coping or adapting to such suffering. Offers the blues as a method for looking at the spirit of human tragedy and…

  12. Blue cures blue but be cautious

    Directory of Open Access Journals (Sweden)

    Pranav Sikka

    2011-01-01

    Full Text Available Methemoglobinemia is a disorder characterized by the presence of >1% methemoglobin (metHb in the blood. Spontaneous formation of methemoglobin is normally counteracted by protective enzyme systems, for example, nicotinamide adenine dinucleotide phosphate (NADPH methemoglobin reductase. Methemoglobinemia is treated with supplemental oxygen and methylene blue (1-2 mg/kg administered slow intravenously, which acts by providing an artificial electron acceptor for NADPH methemoglobin reductase. But known or suspected glucose-6-phosphate dehydrogenase (G6PD deficiency is a relative contraindication to the use of methylene blue because G6PD is the key enzyme in the formation of NADPH through pentose phosphate pathway and G6PD-deficient individuals generate insufficient NADPH to efficiently reduce methylene blue to leukomethylene blue, which is necessary for the activation of the NADPH-dependent methemoglobin reductase system. So, we should be careful using methylene blue in methemoglobinemia patient before G6PD levels.

  13. Automated method to compute Evans index for diagnosis of idiopathic normal pressure hydrocephalus on brain CT images

    Science.gov (United States)

    Takahashi, Noriyuki; Kinoshita, Toshibumi; Ohmura, Tomomi; Matsuyama, Eri; Toyoshima, Hideto

    2017-03-01

    The early diagnosis of idiopathic normal pressure hydrocephalus (iNPH) considered as a treatable dementia is important. The iNPH causes enlargement of lateral ventricles (LVs). The degree of the enlargement of the LVs on CT or MR images is evaluated by using a diagnostic imaging criterion, Evans index. Evans index is defined as the ratio of the maximal width of frontal horns (FH) of the LVs to the maximal width of the inner skull (IS). Evans index is the most commonly used parameter for the evaluation of ventricular enlargement. However, manual measurement of Evans index is a time-consuming process. In this study, we present an automated method to compute Evans index on brain CT images. The algorithm of the method consisted of five major steps: standardization of CT data to an atlas, extraction of FH and IS regions, the search for the outmost points of bilateral FH regions, determination of the maximal widths of both the FH and the IS, and calculation of Evans index. The standardization to the atlas was performed by using linear affine transformation and non-linear wrapping techniques. The FH regions were segmented by using a three dimensional region growing technique. This scheme was applied to CT scans from 44 subjects, including 13 iNPH patients. The average difference in Evans index between the proposed method and manual measurement was 0.01 (1.6%), and the correlation coefficient of these data for the Evans index was 0.98. Therefore, this computerized method may have the potential to accurately compute Evans index for the diagnosis of iNPH on CT images.

  14. A comparison of Coomassie blue dye with radioiodinated albumin as an indicator for plasma volume estimation in human subjects

    Science.gov (United States)

    Menzies, Ian S.

    1966-01-01

    Plasma volume has been estimated in 10 human subjects using Coomassie blue and 131I radioiodinated human serum albumin dilution methods simultaneously. Three different methods of correction used by previous workers to overcome the error due to early dye loss were applied. Satisfactory agreement with the established radioiodinated albumin method was only obtained by extrapolation of the semilogarithmic plot of Coomassie blue plasma dye concentration between five and 10 minutes to the time of injection. The significance of the controversial Evans blue `mixing curve' is discussed. An analogous phase in the Coomassie blue disappearance slope is considered to be due to initial rapid loss of dye from the circulation rather than to the process of mixing. It is shown that Coomassie blue fulfils the criteria listed in the discussion for plasma volume estimation. PMID:4160095

  15. Obesity in the Otsuka Long Evans Tokushima Fatty Rat: Mechanisms and Discoveries

    OpenAIRE

    Sheng Bi; Moran, Timothy H.

    2016-01-01

    Understanding the neural systems underlying the controls of energy balance has been greatly advanced by identifying the deficits and underlying mechanisms in rodent obesity models. The current review focuses on the Otsuka Long Evans Tokushima Fatty (OLETF) rat obesity model. Since its recognition in the 1990’s significant progress has been made in identifying the causes and consequences of obesity in this model. Fundamental is a deficit in the cholecystokinin (CCK) 1 receptor gene resultin...

  16. Sotsiaalne ettevõtlus lahendab murekohti / Mervi Raudsaar, Roger Evans ; intervjueerinud Merilyn Merisalu

    Index Scriptorium Estoniae

    Raudsaar, Mervi, 1975-

    2012-01-01

    TÜ ettevõtluskeskuse kaasabil loetakse kevadsemestril Tartu ülikoolis, Eesti maaülikoolis, Tallinna ülikoolis ja EBS-is inglise- ja eestikeelset õppeainet "Sotsiaalse ettevõtluse alused". Loenguid loevad TÜ majandusteaduskonna ettevõtluse assistent Mervi Raudsaar, külalisprofessor Roger Evans Šotimaalt ning Margarita Sokolova Heateo Sihtasutusest. Ainekursus valmib koostöös Heateo Sihtasutuse ja EASiga

  17. Vascular Aldosterone Production at the Pre-Diabetic Stage of Young Otsuka Long-Evans Tokushima Fatty (OLETF Rats, Compared with Long-Evans Tokushima Otsuka (LETO Rats

    Directory of Open Access Journals (Sweden)

    Yoko Matsuzawa

    2013-12-01

    Full Text Available We examined the ability of aortic smooth muscle cells (AoSMC prepared from spontaneously diabetic rats to produce aldosterone (Aldo and the regulatory mechanism that controls their Aldo production. AoSMC of 6 week-old Long-Evans Tokushima Otsuka (LETO: the control group and 6 week-old Otsuka Long-Evans Tokushima Fatty (OLETF: the type 2 diabetes group rats were used in the present experiments. CYP11B2 (Aldo synthetase mRNA expression was detected in both the LETO and OLETF AoSMC. Basal Aldo production was significantly greater (4–5 fold higher in the OLETF AoSMC culture medium than in the LETO AoSMC culture medium. When AoSMC were co-incubated with high-density lipoproteins (HDL, supplying cholesterol as a substrate for steroidogenesis in rats, angiotensin II (AII significantly increased greater Aldo production in the OLETF AoSMC than in the LETO AoSMC. The present data suggested that future onset of diabetic vascular dysfunction is partly caused by excess Aldo production by AoSMC in young OLETF rats. Concomitant stimulation by HDL and AII resulted in elevated Aldo production in the OLETF and the LETO AoSMC, and also demonstrated that AII-induced Aldo production is greatly enhanced by HDL in OLETF, rather than in LETO. In conclusion, our data clearly demonstrated that Aldo production in the OLETF AoSMC was significantly higher than in the LETO AoSMC, suggesting possible future onset of vascular dysfunction in diabetes, induced by local Aldo production in the AoSMC.

  18. Koronis Family Member (3032) Evans: Photometric Reconnaissance and Lightcurves in 2008, 2009, and 2016

    Science.gov (United States)

    Slivan, Stephen M.; Neugent, Kathryn F.; Melton, Casey; Beck, Madeleine

    2018-01-01

    We observed rotation lightcurves of (3032) Evans during three apparitions using the 0.6-m telescope at Whitin Observatory. The lightcurve amplitude was consistently rather low ( 0.15 mag.) during all three apparitions, and although we can construct credible doubly-periodic composite lightcurves from our data, we discuss why we favor a rotation period of 3.3970 ± 0.0002 h even though the resulting composite lightcurves are quadruply periodic. The observations from 2008 are calibrated to a standard system, enabling us to measure the absolute magnitude HR, slope parameter GR, and V–R color, from which we calculate H = 11.75 ± 0.05.

  19. Margiad Evans (1909-1958): a history of epilepsy in a creative writer.

    Science.gov (United States)

    Larner, A J

    2009-12-01

    The author Margiad Evans (1909-1958), a celebrated Anglo-Welsh writer of the 1930s and 1940s, developed epilepsy in 1950, and subsequently wrote accounts of her experiences of seizures, their diagnosis, and their management. These documents are among the first patient accounts of epilepsy, and remain of value today, not least because they prefigure ongoing problems in epilepsy management such as pregnancy and the adverse effects of antiepileptic drugs. They also give some insights into the consequences of epilepsy for a creative writer.

  20. Moniliophthora roreri (Cif y Par Evans et al. in the crop of cocoa

    Directory of Open Access Journals (Sweden)

    Fernando David Sánchez Mora

    2012-09-01

    Full Text Available More than a century, cacao (Theobroma cacao L. in Ecuador has been an important source of income for farmers and currency for the country, becoming one of the biggest exporters worldwide. Then, gradually lost that status due to the attack of diseases, including moniliasis caused by [Moniliophthora roreri (Cif and Par Evans et al.]. It can cause damage of up to 80% in production. Currently there is little scientific date information on its occurrence, symptoms, etiology, epidemiology, life cycle management or control strategies of that disease, by performing this review both these important topics, bringing with it to this area of knowledge.

  1. Blue Ocean Thinking

    Science.gov (United States)

    Orem, Donna

    2016-01-01

    This article describes a concept called the "blue ocean thinking strategy," developed by W. Chan Kim and Renée Mauborgne, professors at INSEAD, an international graduate school of business in France. The "blue ocean" thinking strategy considers opportunities to create new markets for services, rather than focusing solely on…

  2. Hepatocyte transplantation in the Long Evans Cinnamon rat model of Wilson's disease.

    Science.gov (United States)

    Park, Seon Mee; Vo, Kim; Lallier, Michel; Cloutier, Alexis-Simon; Brochu, Pierre; Alvarez, Fernando; Martin, Steven R

    2006-01-01

    Wilson's disease (WD), caused by a mutation in the P-type copper transporting ATPase (Atp7b) gene, results in excessive accumulation of copper in the liver. Long Evans Cinnamon rats (LEC) bear a mutation in the atp7b gene and share clinical characteristics of human WD. To explore hepatocyte transplantation (HT) as therapy for metabolic liver diseases, 8-week-old LEC rats (n = 12) were transplanted by intrasplenic injection of hepatocytes from donor Long Evans (LE) rats. Immunosuppression was maintained with intraperitoneal tacrolimus. The success of HT was monitored at 24 weeks of life. Serum aminotransferases and bilirubin peaked at 14-21 weeks in both HT rats and nontransplanted controls, but at 24 weeks, survival was 97% in LEC-HT versus 63% in controls. All transplanted rats showed restored biliary copper excretion and reduced liver iron concentration associated with increased ceruloplasmin oxidase activity. Liver tissue expressed atp7b mRNA (11.9 +/- 13.6%) indicative of engraftment of normal cells in 7 of 12 HT rats, associated with a reduced liver copper concentration compared to untreated LEC rats. Periportal islets of normal appearing hepatocytes, recognized by atp7b antibody, were observed in transplanted livers while lobular host cells showed persistent pleomorphic changes and inflammatory infiltrates. In conclusion, transplantation of normal hepatocytes prevented fulminant hepatitis, reduces chronic inflammation, and improved 6-month survival in LEC rats. Engraftment of transplanted cells, which express atp7b mRNA, repopulated the recipient liver with normal functional capacity.

  3. Blue ocean strategy.

    Science.gov (United States)

    Kim, W Chan; Mauborgne, Renée

    2004-10-01

    Despite a long-term decline in the circus industry, Cirque du Soleil profitably increased revenue 22-fold over the last ten years by reinventing the circus. Rather than competing within the confines of the existing industry or trying to steal customers from rivals, Cirque developed uncontested market space that made the competition irrelevant. Cirque created what the authors call a blue ocean, a previously unknown market space. In blue oceans, demand is created rather than fought over. There is ample opportunity for growth that is both profitable and rapid. In red oceans--that is, in all the industries already existing--companies compete by grabbing for a greater share of limited demand. As the market space gets more crowded, prospects for profits and growth decline. Products turn into commodities, and increasing competition turns the water bloody. There are two ways to create blue oceans. One is to launch completely new industries, as eBay did with online auctions. But it's much more common for a blue ocean to be created from within a red ocean when a company expands the boundaries of an existing industry. In studying more than 150 blue ocean creations in over 30 industries, the authors observed that the traditional units of strategic analysis--company and industry--are of limited use in explaining how and why blue oceans are created. The most appropriate unit of analysis is the strategic move, the set of managerial actions and decisions involved in making a major market-creating business offering. Creating blue oceans builds brands. So powerful is blue ocean strategy, in fact, that a blue ocean strategic move can create brand equity that lasts for decades.

  4. Thermodynamically Stable Blue Phases

    Science.gov (United States)

    Castles, F.; Morris, S. M.; Terentjev, E. M.; Coles, H. J.

    2010-04-01

    We show theoretically that flexoelectricity stabilizes blue phases in chiral liquid crystals. Induced internal polarization reduces the elastic energy cost of splay and bend deformations surrounding singular lines in the director field. The energy of regions of double twist is unchanged. This in turn reduces the free energy of the blue phase with respect to that of the chiral nematic phase, leading to stability over a wider temperature range. The theory explains the discovery of large temperature range blue phases in highly flexoelectric “bimesogenic” and “bent-core” materials, and predicts how this range may be increased further.

  5. Blue Holes & Hurricanes

    National Research Council Canada - National Science Library

    David Levin

    2017-01-01

    A blue hole in the ocean is a striking sight. Fly over remote areas of the Caribbean Sea and you'll see shallow turquoise water stretching for miles, interrupted only by occasional sand bars and coral reefs...

  6. Blue Ribbon Panel Report

    Science.gov (United States)

    An NCI Cancer Currents blog by the NCI acting director thanking the cancer community for contributing to the Cancer Moonshot Blue Ribbon Panel report, which was presented to the National Cancer Advisory Board on September 7.

  7. Blue-Green Algae

    Science.gov (United States)

    ... been used for food for several centuries in Mexico and some African countries. They have been sold ... appear to reduce symptoms such as hot flashes. Obesity. Research on the effects of blue-green algae ...

  8. Methylene blue test

    Science.gov (United States)

    Methemoglobinemia - methylene blue test ... No special preparation is required for this test. ... which are genetic (problem with your genes). This test is used to tell the difference between methemoglobinemia ...

  9. New York Blue

    Data.gov (United States)

    Federal Laboratory Consortium — New York Blue is used cooperatively by the Laboratory and Stony Brook University as part of the New York Center for Computation Sciences. Ranked as the 28th fastest...

  10. On the behavior of Bronsted-Evans-Polanyi Relations for Transition Metal Oxides

    Energy Technology Data Exchange (ETDEWEB)

    Vojvodic, Aleksandra

    2011-08-22

    Versatile Broensted-Evans-Polanyi (BEP) relations are found from density functional theory for a wide range of transition metal oxides including rutiles and perovskites. For oxides, the relation depends on the type of oxide, the active site and the dissociating molecule. The slope of the BEP relation is strongly coupled to the adsorbate geometry in the transition state. If it is final state-like the dissociative chemisorption energy can be considered as a descriptor for the dissociation. If it is initial state-like, on the other hand, the dissociative chemisorption energy is not suitable as descriptor for the dissociation. Dissociation of molecules with strong intramolecular bonds belong to the former and molecules with weak intramolecular bonds to the latter group. We show, for the prototype system La-perovskites, that there is a 'cyclic' behavior in the transition state characteristics upon change of the active transition metal of the oxide.

  11. Taxonomic review of Gallio Evans, 1955 (Lepidoptera, Hesperiidae, Hesperiinae: one less monotypic genus of Moncini

    Directory of Open Access Journals (Sweden)

    Eduardo Carneiro

    2015-12-01

    Full Text Available ABSTRACT Moncini is the tribe of Hesperiidae that comprises the greatest diversity of small, brown, hard to identify skippers. The group is peculiarly classified as having many monotypic genera, thus offering low informative value to its systematics. This study presents a review of the genus Gallio Evans, 1955, a genus formerly recognized as monotypic, and describes three new species, Gallio imperatriz sp. nov. from Maranhão, Brazil, Gallio furtadoi sp. nov. from Mato Grosso, Brazil and Gallio eti sp. nov. from Madre de Díos, Peru and Acre, Brazil (type locality. A lectotype for Vehilius carasta Schaus, 1902 is designated. Gallio is therefore redescribed and illustrations and diagnosis to its species are provided.

  12. First Light Achieved at the new Mt.Evans High Altitude Observatory

    Science.gov (United States)

    Stencel, R. E.

    1997-12-01

    During August 1997, first light images were obtained with the new Meyer Binocular Telescope, a twin 0.72 meter RC system, located at the Meyer- Womble Observatory atop 14,268 ft Mt.Evans, Colorado. The site is along a treeless high ridge which frequently enjoys laminar airflow and good seeing. The telescope and building also include thermal and airflow management systems for seeing optimization. Finally, a 5 element adaptive optics system that is being tested at Yerkes Observatory, should be able to correct the native seeing to nearly the limit of optical performance. For details on all of the above, please refer to my website: www.du.edu/ rstencel. The high altitude of Mt.Evans makes it ideal for mid-infrared studies, and we anticipate pursuing mid-IR imaging and spectroscopy from this site. Mark 2 of our TNTCAM (Klebe et al.-this meeting) is now in design stage, thanks to an NSF MRI grant. The spectrometer, TGIRS (Creech-Eakman et al. 1996 BAAS 28: 1372) has also achieved first light in the lab. We plan to use both at the new mountaintop facility. Another interesting feature of the new observatory is its photovoltaic energy supply for continuous power, sponsored in part by the Renewable Energy Trust, National Renewable Energy Lab and the Colorado Office of Energy Conservation. Denver University is interested in forming partnerships with other programs in order to make best use of this new resource for educational research in astronomy and astrophysics. This can include REU-style student summer visits, instrument testing and/or observational studies. I am pleased to acknowledge sponsorship by the Estate of William Herschel Womble, and the Meyer Foundation.

  13. Alpha-lipoic acid attenuates cardiac fibrosis in Otsuka Long-Evans Tokushima Fatty rats

    Directory of Open Access Journals (Sweden)

    Lee Jung Eun

    2012-09-01

    Full Text Available Abstract Background Hyperglycemia leads to cardiac oxidative stress and an imbalance in glucose homeostasis. Diabetic cardiomyopathy is characterised by cardiac hypertrophy and fibrosis. However, the underlying mechanisms of diabetic cardiomyopathy are not fully understood. This study aimed to investigate the effects of alpha-lipoic acid (ALA on cardiac energy metabolism, antioxidant effect, and fibrosis in the hearts of Otsuka Long-Evans Tokushima fatty (OLETF rats. Methods Animals were separated into non-diabetic Long-Evans Tokushima Otsuka (LETO rats and diabetes-prone OLETF rats with or without ALA (200 mg/kg/day administration for 16 weeks. Diabetic cardiomyopathy was assessed by staining with Sirius Red. The effect of ALA on AMPK signalling, antioxidant enzymes, and fibrosis-related genes in the heart of OLETF rats were performed by Western blot analysis or immunohistochemistry. Results Western blot analysis showed that cardiac adenosine monophosphate-activated kinase (AMPK signalling was lower in OLETF rats than in LETO rats, and that ALA treatment increased the signalling in OLETF rats. Furthermore, the low antioxidant activity in OLETF rats was increased by ALA treatment. In addition to increased Sirius red staining of collagen deposits, transforming growth factor-β1 (TGF-β1 and connective tissue growth factor (CTGF were expressed at higher levels in OLETF rat hearts than in LETO rat hearts, and the levels of these factors were decreased by ALA. Conclusions ALA enhances AMPK signalling, antioxidant, and antifibrogenic effect. Theses findings suggest that ALA may have beneficial effects in the treatment of diabetic cardiomyopathy.

  14. Public Lecture | The long road to the LHC | Prof. Lyn Evans, Dr. Daniel Treille and Prof. Peter Jenni | 9 October

    CERN Multimedia

    2014-01-01

    “The long road to the LHC” by Prof. Lyn Evans, Dr. Daniel Treille and Prof. Peter Jenni. Thursday 9 October, 7.30 p.m. in the Globe of Science and Innovation. Talk in English with simultaneous interpreting into French.  Entrance free. Limited number of seats. Reservation essential: +41 22 767 76 76 or cern.reception@cern.ch   Lyn Evans. Lecture by Lyn Evans Abstract The key to the discovery of the Higgs boson has been the development of particle accelerators at CERN over the years. I will explain how a particle accelerator works and will follow the path from the construction of the Proton Synchrotron in the 1950s to the world’s most powerful colliding beam machine, the Large Hadron Collider. Biography Born in 1945, Lyn Evans has spent his whole career in the field of high energy physics and particle accelerators, participating in all the great projects of CERN. From 1993 he led the team that designed, built and commissioned the LHC. He is currently ...

  15. Genre Analysis of Decision Letters from Editors of Scientific Journals: Building on Flowerdew and Dudley-Evans (2002)

    Science.gov (United States)

    Farley, Peter C.

    2017-01-01

    Flowerdew and Dudley-Evans (2002) described a prototypical structure for decision letters based on a personal database of letters written by one editor for the journal "English for Specific Purposes." In this article, I analyse a publicly available corpus of 59 decision letters from 48 different editors of a wide range of scientific…

  16. Questioning expertise. (book review of Evan Selinger & Robert Crease (eds), 'The philosophy of expertise, and Roger Pielke, 'The honest broker'.)

    NARCIS (Netherlands)

    Briggle, A.R.

    2008-01-01

    The Philosophy of Expertise / Evan Selinger & Robert P. Crease, (eds). - New York : Columbia University Press, 2006. - ISBN 0-231-13644-7 [and] The Honest Broker: Making Sense of Science in Policy and Politics / Roger A. Pielke. - New York : Cambridge University Press, 2007. - ISBN 05-218-7320-7

  17. A Blue Lagoon Function

    DEFF Research Database (Denmark)

    Markvorsen, Steen

    2007-01-01

    We consider a specific function of two variables whose graph surface resembles a blue lagoon. The function has a saddle point $p$, but when the function is restricted to any given straight line through $p$ it has a {\\em{strict local minimum}} along that line at $p$.......We consider a specific function of two variables whose graph surface resembles a blue lagoon. The function has a saddle point $p$, but when the function is restricted to any given straight line through $p$ it has a {\\em{strict local minimum}} along that line at $p$....

  18. The Blue Collar Brain

    Directory of Open Access Journals (Sweden)

    Guy eVan Orden

    2012-06-01

    Full Text Available Much effort has gone into elucidating control of the body by the brain, less so the role of the body in controlling the brain. This essay develops the idea that the brain does a great deal of work in the service of behavior that is controlled by the body, a blue collar role compared to the white collar control exercised by the body. The argument that supports a blue collar role for the brain is also consistent with recent discoveries clarifying the white collar role of synergies across the body's tensegrity structure, and the evidence of critical phenomena in brain and behavior.

  19. Code blue: seizures.

    Science.gov (United States)

    Hoerth, Matthew T; Drazkowski, Joseph F; Noe, Katherine H; Sirven, Joseph I

    2011-06-01

    Eyewitnesses frequently perceive seizures as life threatening. If an event occurs on the hospital premises, a "code blue" can be called which consumes considerable resources. The purpose of this study was to determine the frequency and characteristics of code blue calls for seizures and seizure mimickers. A retrospective review of a code blue log from 2001 through 2008 identified 50 seizure-like events, representing 5.3% of all codes. Twenty-eight (54%) occurred in inpatients; the other 22 (44%) events involved visitors or employees on the hospital premises. Eighty-six percent of the events were epileptic seizures. Seizure mimickers, particularly psychogenic nonepileptic seizures, were more common in the nonhospitalized group. Only five (17.9%) inpatients had a known diagnosis of epilepsy, compared with 17 (77.3%) of the nonhospitalized patients. This retrospective survey provides insights into how code blues are called on hospitalized versus nonhospitalized patients for seizure-like events. Copyright © 2011. Published by Elsevier Inc.

  20. The Blue Baby Syndrome

    Indian Academy of Sciences (India)

    climate change, water and soil pollution, environ- mental impacts of wastewater irrigation and soil nutrient management. Keywords. Cyanosis, hemoglobin, infants, methemoglobinemia, nitrate. Deepanjan Majumdar. Blue Baby Syndrome or Methemoglobinemia is caused by decreased ability of blood to carry oxygen, ...

  1. Defining the Blue economy

    CSIR Research Space (South Africa)

    Smith-Godfrey, S

    2016-01-01

    Full Text Available MARITIME AFFAIRS: JOURNAL OF THE NATIONAL MARITIME FOUNDATION OF INDIA, 2016 http://dx.doi.org/10.1080/09733159.2016.1175131 Defining the Blue Economy S. Smith-Godfrey Council for Scientific and Industrial Research (CSIR), Pretoria, South Africa...

  2. The Blue Baby Syndrome

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 8; Issue 10. The Blue Baby Syndrome - Nitrate Poisoning in Humans. Deepanjan Majumdar. General Article Volume 8 Issue 10 October 2003 pp 20-30. Fulltext. Click here to view fulltext PDF. Permanent link:

  3. O fantasma de Evans-Pritchard: diálogos da antropologia com a sua história The ghost of Evans-Pritchard: anthropology’s dialogues with its own history

    Directory of Open Access Journals (Sweden)

    Frederico Delgado Rosa

    2011-06-01

    Full Text Available Tomando como estudo de caso a monografia de Sharon Hutchinson sobre os nuer, o presente artigo explora os quiproquós do diálogo entre a antropologia contemporânea e os clássicos, procurando detetar certas genealogias invisíveis que remontam aos funcionalistas britânicos, e nomeadamente a Evans-Pritchard. Procede a um esbatimento de certas oposições explícitas entre o presente e o passado da antropologia, revelando que as noções clássicas perpassam de forma subterrânea o discurso daqueles que dizem rejeitá-las e que muitas das preocupações atuais já tinham expressão nas etnografias modernas. É demonstrado que as abordagens estáticas - como a de Evans-Pritchard - tinham uma componente histórica e que a antropologia social britânica teve as suas respostas teóricas e metodológicas para as transformações dos contextos africanos sob domínio colonial.Through the reading of Sharon Hutchinson’s monograph on the Nuer, this article explores the misunderstandings between contemporary anthropology and the modern classics. It tries to identify invisible genealogies that go back to the British functionalists, particularly to Evans-Pritchard, and minimizes the explicit oppositions between the present and the past of anthropology. It reveals that some classical notions are detectable in non-explicit ways among those who claim to reject them and, at the same time, that contemporary concerns have their roots in modern ethnographies. The author shows that static approaches - as the one by Evans-Pritchard on the Nuer - had a historical meaning and recalls that British social anthropology had its own theoretical and methodological answers to the transformations of African contexts under colonial rule.

  4. [Blue light and eye health].

    Science.gov (United States)

    Zou, Leilei; Dai, Jinhui

    2015-01-01

    Blue light, with the wavelength between 400 nm and 500 nm, has caused public concern because of the injury to the retinal cells. Meanwhile, it is important in circadian rhythm regulation, scotopic vision and ocular growth. Is the blue light safe? Should it be eliminated from the daily life? Here we review the effect and safety of the blue light.

  5. Challenging Expertise: Paul Feyerabend vs. Harry Collins & Robert Evans on democracy, public participation and scientific authority: Paul Feyerabend vs. Harry Collins & Robert Evans on scientific authority and public participation.

    Science.gov (United States)

    Sorgner, Helene

    2016-06-01

    This paper compares Feyerabend's arguments in Science in a Free Society to the controversial theory of expertise proposed by Harry Collins and Robert Evans as a Third Wave of Science Studies. Is the legitimacy of democratic decisions threatened by the unquestioned authority of scientific advice? Or does, on the contrary, science need protection from too much democratic participation in technical decisions? Where Feyerabend's political relativism envisions democratic society as inherently pluralist and demands equal contribution of all traditions and worldviews to public decision-making, Collins and Evans hold a conception of elective modernism, defending the reality and value of technical expertise and arguing that science deserves a privileged status in modern democracies, because scientific values are also democratic values. I will argue that Feyerabend's political relativism provides a valuable framework for the evaluation of Collins' and Evans' theory of expertise. By constructing a dialog between Feyerabend and this more recent approach in Science and Technology Studies, the aim of this article is not only to show where the two positions differ and in what way they might be reconciled, but also how Feyerabend's philosophy provides substantial input to contemporary debate. Copyright © 2015 Elsevier Ltd. All rights reserved.

  6. A Case Study: Dual-Process Theories of Higher Cognition-Commentary on Evans & Stanovich (2013).

    Science.gov (United States)

    Osman, Magda

    2013-05-01

    Dual-process theories of higher order cognition (DPTs) have been enjoying much success, particularly since Kahneman's 2002 Nobel prize address and recent book Thinking, Fast and Slow (2009). Historically, DPTs have attempted to provide a conceptual framework that helps classify and predict differences in patterns of behavior found under some circumstances and not others in a host of reasoning, judgment, and decision-making tasks. As evidence has changed and techniques for examining behavior have moved on, so too have DPTs. Killing two birds with one stone, Evans and Stanovich (2013, this issue) respond to five main criticisms of DPTs. Along with addressing each criticism in turn, they set out to clarify the essential defining characteristics that distinguish one form of higher order cognition from the other. The aim of this commentary is to consider the defining characteristics of Type 1 and Type 2 processing that have been proposed and to suggest that the evidence can be taken to support quantitative differences rather than qualitatively distinct processes. © The Author(s) 2013.

  7. Demonstrating Potential of Cell Therapy for Wilson's Disease with the Long-Evans Cinnamon Rat Model.

    Science.gov (United States)

    Jaber, Fadi Luc; Sharma, Yogeshwar; Gupta, Sanjeev

    2017-01-01

    Wilson's disease (WD) is characterized by the inability to excrete copper (Cu) from the body with progressive tissue injury, especially in liver and brain. The molecular defect in WD concerns mutations in ATP7B gene leading to loss of Cu transport from the hepatocyte to the bile canaliculus. While drugs, e.g., Cu chelators, have been available for several decades, these must be taken lifelong, which can be difficult due to issues of compliance or side effects. Many individuals may require liver transplantation, which can also be difficult due to donor organ shortages. Therefore, achieving permanent cures via cell or gene therapy are of great interest for WD. Cell therapy is feasible because transplanted hepatocytes can integrate in liver parenchyma and restore deficient functions, including transport of Cu into bile. The availability of authentic animal models that recapitulate hepatic WD, especially the Long-Evans Cinnamon (LEC) rat, has advanced cell transplantation research in WD. We describe requirements for cell therapy in animal models with several standardized methods for studies to test or refine cell therapy strategies in WD.

  8. [Ameliorative effect of propolis on insulin resistance in Otsuka Long-Evans Tokushima Fatty (OLETF) rats].

    Science.gov (United States)

    Zamami, Yoshito; Fujiwara, Hiroki; Hosoda, Miho; Hino, Hayato; Hirai, Kazuhiro; Okamoto, Kazuaki; Jin, Xin; Takatori, Shingo; Doi-Takaki, Shima; Kawasaki, Hiromu

    2010-06-01

    Propolis is known to have abundant bioactive constituents and a variety of biological activities. To investigate the effect of Brazilian propolis on insulin resistance, 10-week-old Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a non-insulin-dependent type 2 diabetic model, were treated for 4 weeks with propolis (100 and 300 mg/kg, p.o.) or vehicle (control). Propolis treatment significantly decreased the plasma levels of insulin and insulin resistance index (Homeostasis Model Assessment-Insulin Resistance; HOM-IR), without affecting blood glucose levels and tended to lower systolic blood pressure compared with the control. In isolated and perfused mesenteric vascular beds of OLETF rats, propolis treatment resulted in significant reduction of sympathetic nerve-mediated vasoconstrictor response to periarterial nerve stimulation (PNS) and tended to increase calcitonin gene-related peptide (CGRP) nerve-mediated vasodilator response to PNS compared with in vehicle-treated OLETF rats. However, propolis treatment did not significantly affect the vasoconstrictor and vasodilator response to noradrenaline, CGRP, acetylcholine, and sodium nitroprusside. These results suggest that propolis could be an effective and functional food to prevent development of insulin resistance.

  9. Evans syndrome in children. Long-term outcome in a prospective French national observational cohort.

    Directory of Open Access Journals (Sweden)

    Nathalie eAladjidi

    2015-09-01

    Full Text Available Evans syndrome (ES is a rare autoimmune disorder whose long-term follow-up characteristics are unknown. Patients under 18 at the time of diagnosis of a first autoimmune cytopenia have been included since 2004 in a national prospective observational cohort. In 2014, 156 children diagnosed between 1981 and 2014 with ES, were analyzed. The median age at initial cytopenia was 5.4 (0.2-17.2 years old. For 85 sequential cases, the median delay between the episodes of AIHA and ITP was 2.4 years (0.1–16.3. The median follow-up since ES diagnosis was 6.5 years (0.1-28.8. ES revealed underlying diseases in 10% of children; in 60% of patients, various associated immune manifestations were observed, and ES remained primary in 30%. Five-year ITP and AIHA relapse-free survival were respectively 25% and 61%. In all, 69% of children required one or more than one second-line immune treatment and 15 patients (10% died at a median age of 14.3 years (1.7-28.1.This national work provides the first consistent clinical description for ES and underscores the high percentage of associated immune manifestations, the long-term complications, and treatment toxicities. Current challenges include the identification of underlying genetic immune dysregulations and better characterization of subgroups of patients and of second-line therapy strategies.

  10. Efficacy of zinc supplementation in preventing acute hepatitis in Long-Evans Cinnamon rats.

    Science.gov (United States)

    Medici, Valentina; Sturniolo, Giacomo Carlo; Santon, Alessandro; D'Incà, Renata; Bortolami, Marina; Cardin, Romilda; Basso, Daniela; Albergoni, Vincenzo; Irato, Paola

    2005-08-01

    Long-Evans Cinnamon (LEC) rats are characterized by an abnormal hepatic deposition of copper (Cu) due to a lack of the Cu-transporter P-type adenosine triphosphatase: accordingly, the strain is a good animal model of Wilson's disease. The effect of oral zinc (Zn) acetate treatment on the development of acute hepatitis and the biochemical parameters of Cu-induced liver damage was studied in 5-week-old LEC rats (n=52). Rats receiving 50 or 80 mg/ml/day Zn acetate by gavage and control rats receiving a daily dose of glucose solution 0.02 g/ml by gastric intubation were killed at 1, 2 or 8 weeks after the start of treatment. Treatment with Zn acetate resulted in the prevention of acute hepatitis: 10 of the 13 untreated rats developed signs and symptoms compatible with acute hepatitis between the 6th and 7th week of treatment. Tissue metallothionein (MT) significantly increased in the treated rats and positively correlated with Zn concentrations within the liver. Control rats had a significantly higher iron concentration in the liver and kidneys compared with supplemented rats, after both short- and long-term experiments. 8-hydroxy-2'-deoxyguanosine amounts were significantly lower in untreated rats. Zn acetate prevents acute hepatitis, by increasing tissue MT concentrations, reducing Cu absorption and interfering with Fe metabolism.

  11. Perioral anesthesia disrupts maternal behavior during early lactation in Long-Evans rats.

    Science.gov (United States)

    Stern, J M; Kolunie, J M

    1989-07-01

    The role of perioral somatosensory stimulation from pups in maternal behavior was investigated in lactating Long-Evans rats (Rattus norvegicus) during early lactation by local anesthesia of the mystacial pads with lidocaine, which blocks conduction in the infraorbital nerve. It was concluded that (1) acute perioral anesthesia markedly inhibited pup retrieval when the subjects had no formal pretreatment retrieval experience. Further, these dams displayed little tolerance to the lidocaine treatment when they were tested repeatedly. (2) The severity of the effects of perioral anesthesia on retrieval was dependent upon prior experience and the testing situation. Following pretreatment retrieval experience, and in a test cage with dark and light compartments which provided a strong incentive to retrieve, 80% of lidocaine-injected dams did retrieve. However, retrieval efficiency was impaired by perioral anesthesia, largely due to increased time in contact with pups prior to each retrieval and to increased carrying time. (3) Perioral anesthesia also inhibited pup licking, but not self-grooming, suggesting that the former, but not the latter, is largely under peripheral stimulus control and that deficits in maternal oral activities cannot be due to impairment of mouth opening and use. (4) The onset of nursing behavior was delayed until after the recovery of snout sensations and retrieval. This suggests that a maternal behavior not directly involving the mouth is nonetheless dependent upon the dam's receipt of perioral tactile input from pups.

  12. Abnormal thyroid function test results in patients with Fisher-Evans syndrome.

    Science.gov (United States)

    Lio, S; Albin, M; Girelli, G; Perrone, M P; Gandolfo, G; Conti, L; Mazzone, D; D'Armiento, M

    1993-03-01

    Thyroid function was evaluated in patients affected by Fisher-Evans syndrome (FES) and compared to that of patients affected only by autoimmune hemolytic anemia (AIHA) and to that of patients affected only by idiopathic thrombocytopenic purpura (ITP). The study population consisted of 20 patients with FES, 44 with AIHA and 20 with ITP. All patients were examined for thyroid function abnormalities and thyroid autoantibodies. Abnormal thyroid function test results were observed in 40, 25 and 10% of the patients, respectively. The prevalence of antithyroid antibodies (ATA) in FES was 25%; this is higher than the sum of the prevalences of ATA in patients affected only by AIHA (11.4%) or only by ITP (none). Subclinical primary hypothyroidism and hyperthyroxinemia with or without hypertriiodothyroninemia, with TSH serum levels below normal, were present in 20% and 10% of patients affected by FES, respectively. Of the former, 75% were positive for ATA. These results: i) confirm the high prevalence of abnormal thyroid test results in patients affected by AIHA, ITP and FES; ii) demonstrate the higher prevalence of autoimmune hypothyroidism in FES; iii) lead to the possibility of including FES as one of the multiple autoimmune syndromes.

  13. Reframing violence against women as a human rights violation: Evan Stark's Coercive Control.

    Science.gov (United States)

    Libal, Kathryn; Parekh, Serena

    2009-12-01

    Evan Stark claims that partner-perpetrated physical abuse and other forms of violence against women ought to be understood as a human rights violation. The authors engage Stark's rhetorically powerful political and analytical innovation by outlining one theoretical and one practical challenge to shifting the paradigm that researchers, advocates, and policy makers use to describe, explain, and remedy the harms of coercive control from misdemeanor assault to human rights violation. The theoretical challenge involves overcoming the public/ private dichotomy that underpins liberal conceptions of human rights.The practical challenge involves using the human rights framework in the United States, given public indifference to human rights rhetoric or law, reluctance of U.S. policy makers to submit to scrutiny or justice-oriented processes under international law on issues of human rights and especially war crimes, and the consequent U.S. legacy of refusal to participate meaningfully in the international human rights process. The authors conclude that employing a human rights framework holds potential in the United States, but the paradigm shift Stark advocates will not materialize without widespread mobilization of interest in and understanding of human rights among domestic violence advocates and the society in general.

  14. Tempol protects sleep-deprivation induced behavioral deficits in aggressive male Long-Evans rats.

    Science.gov (United States)

    Solanki, Naimesh; Atrooz, Fatin; Asghar, Saman; Salim, Samina

    2016-01-26

    Earlier, we reported that elevated anxiety-like behavior and high aggression in aged retired breeder Long-Evans (L-E) rats was associated with increased plasma corticosterone and elevated oxidative stress levels. In the present study, we examined how this aged aggressive and anxious rat strain responds to acute sleep deprivation (24h) and whether their behaviors can be modulated via antioxidant tempol treatment. Four groups of L-E rats were utilized: naïve control (NC), tempol treated control (T+NC), sleep deprived (SD), tempol treated and sleep deprived (T+SD). Thus, two groups were treated with tempol (1mM in drinking water for 2 weeks) while the other two were not. Two groups were subjected to acute sleep deprivation (24h) using the columns-in-water model while the other two were not. Sleep deprivation induced anxiety-like behavior, led to significant depression-like behavior and short-term memory impairment in SD rats. And, decision-making behavior also was compromised in SD rats. These behavioral and cognitive impairments were prevented with tempol treatment in T+SD rats. Tempol treatment also reduced SD-induced increase in corticosterone and oxidative stress levels in T+SD rats. These results suggest potential involvement of oxidative stress mechanisms in regulation of sleep deprivation induced behavioral and cognitive deficits in male aged-aggressive rats. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  15. Henri Cartier-Bresson / Walker Evans : Photographier l’Amérique (1929-1947

    Directory of Open Access Journals (Sweden)

    François Brunet

    2009-08-01

    Full Text Available Dans un mot adressé en 2001 à Peter Galassi, conservateur de la photographie au MOMA, Henri Cartier-Bresson, alors âgé de quatre-vingt-treize ans, écrivait plaisamment — mais non pas complaisamment : « If it had not been for the challenge of the work of Walker Evans, I don’t think I would have remained a fotographer » (« sans le défi constitué par le travail de Walker Evans, je ne crois pas que je serais resté fotographe ». Pour fêter le centenaire de Cartier-Bresson, c’est ce défi — plutôt ...

  16. Acute and subchronic toxicity of inhaled toluene in male Long Evans rats: oxidative stress markers in brain

    Science.gov (United States)

    Research interested in oxidative stress markers following exposure to VOCsThis dataset is associated with the following publication:Kodavanti , P., J. Royland , D.A. Moore-Smith, J. Beas, J. Richards , T. Beasley , P. Evansky , and P.J. Bushnell. Acute and Subchronic Toxicity of Inhaled Toluene in Male Long-Evans Rats: Oxidative Stress Markers in Brain. NEUROTOXICOLOGY. Elsevier B.V., Amsterdam, NETHERLANDS, 51: 10-19, (2015).

  17. Early visual deficits in streptozotocin-induced diabetic long evans rats.

    Science.gov (United States)

    Aung, Moe H; Kim, Moon K; Olson, Darin E; Thule, Peter M; Pardue, Machelle T

    2013-02-15

    Although diabetic retinopathy (DR) is clinically diagnosed based on vascular pathology, diabetic patients with angiographically normal retinas have been found to exhibit subtle defects in vision. This has led to the theory that diabetes-associated metabolic abnormalities directly impair neural retinal function before the development of vasculopathy, thereby resulting in visual deficits. In this study, we sought to delineate the temporal relationship between retinal dysfunction and visual deficits in a rat model of Type 1 diabetes. Moreover, we investigated the relative contribution of retinal dysfunction versus diabetes-induced lens opacity, to the visual deficits found in early-stage DR. Pigmented Long Evans rats were rendered diabetic with streptozotocin (STZ). Control and diabetic rats were assessed across 12 weeks of hyperglycemia for visual function with optokinetic tracking weekly visual acuity and monthly contrast sensitivity, retinal function with dark-adapted electroretinograms (monthly electroretinograms [ERGs]), and cataract formation with slit lamp exam (biweekly). Diabetic rats exhibited significantly reduced visual function and delayed ERG responses by 1 month post-STZ. Significant cataracts did not develop until 6 weeks post-STZ. Moreover, increases in lens opacity (r = -0.728) and ERG implicit times (r = -0.615 for rod-dominated response and r = -0.322 for rod/cone mixed response) showed significant correlations with reductions in visual acuity in diabetic rats. STZ-induced hyperglycemia reduces visual function, affecting both visual acuity and contrast sensitivity. The data suggest that visual defects found in early-stage DR may initially involve abnormalities of the neural retina and worsen with later development of cataracts.

  18. TURAN and EVAN mediate pollen tube reception in Arabidopsis Synergids through protein glycosylation.

    Directory of Open Access Journals (Sweden)

    Heike Lindner

    2015-04-01

    Full Text Available Pollen tube (PT reception in flowering plants describes the crosstalk between the male and female gametophytes upon PT arrival at the synergid cells of the ovule. It leads to PT growth arrest, rupture, and sperm cell release, and is thus essential to ensure double fertilization. Here, we describe TURAN (TUN and EVAN (EVN, two novel members of the PT reception pathway that is mediated by the FERONIA (FER receptor-like kinase (RLK. Like fer, mutations in these two genes lead to PT overgrowth inside the female gametophyte (FG without PT rupture. Mapping by next-generation sequencing, cytological analysis of reporter genes, and biochemical assays of glycoproteins in RNAi knockdown mutants revealed both genes to be involved in protein N-glycosylation in the endoplasmic reticulum (ER. TUN encodes a uridine diphosphate (UDP-glycosyltransferase superfamily protein and EVN a dolichol kinase. In addition to their common role during PT reception in the synergids, both genes have distinct functions in the pollen: whereas EVN is essential for pollen development, TUN is required for PT growth and integrity by affecting the stability of the pollen-specific FER homologs ANXUR1 (ANX1 and ANX2. ANX1- and ANX2-YFP reporters are not expressed in tun pollen grains, but ANX1-YFP is degraded via the ER-associated degradation (ERAD pathway, likely underlying the anx1/2-like premature PT rupture phenotype of tun mutants. Thus, as in animal sperm-egg interactions, protein glycosylation is essential for the interaction between the female and male gametophytes during PT reception to ensure fertilization and successful reproduction.

  19. Ethanol seeking by Long Evans rats is not always a goal-directed behavior.

    Directory of Open Access Journals (Sweden)

    Regina A Mangieri

    Full Text Available Two parallel and interacting processes are said to underlie animal behavior, whereby learning and performance of a behavior is at first via conscious and deliberate (goal-directed processes, but after initial acquisition, the behavior can become automatic and stimulus-elicited (habitual. With respect to instrumental behaviors, animal learning studies suggest that the duration of training and the action-outcome contingency are two factors involved in the emergence of habitual seeking of "natural" reinforcers (e.g., sweet solutions, food or sucrose pellets. To rigorously test whether behaviors reinforced by abused substances such as ethanol, in particular, similarly become habitual was the primary aim of this study.Male Long Evans rats underwent extended or limited operant lever press training with 10% sucrose/10% ethanol (10S10E reinforcement (variable interval (VI or (VR ratio schedule of reinforcement, or with 10% sucrose (10S reinforcement (VI schedule only. Once training and pretesting were complete, the impact of outcome devaluation on operant behavior was evaluated after lithium chloride injections were paired with the reinforcer, or unpaired 24 hours later. After limited, but not extended instrumental training, lever pressing by groups trained under VR with 10S10E and under VI with 10S was sensitive to outcome devaluation. In contrast, responding by both the extended and limited training 10S10E VI groups was not sensitive to ethanol devaluation during the test for habitual behavior.Operant behavior by rats trained to self-administer an ethanol-sucrose solution showed variable sensitivity to a change in the value of ethanol, with relative insensitivity developing sooner in animals that received time-variable ethanol reinforcement during training sessions. One important implication, with respect to substance abuse in humans, is that initial learning about the relationship between instrumental actions and the opportunity to consume ethanol

  20. "Nice guys finish last": influence of mate choice on reproductive success in Long-Evans rats.

    Science.gov (United States)

    Winland, C; Bolton, J L; Ford, B; Jampana, S; Tinker, J; Frohardt, R J; Guarraci, F A; Zewail-Foote, M

    2012-02-01

    The present study was designed to determine if male physiology and male reproductive behavior predict reproductive success in Long-Evans rats. Mating behavior was observed in sexually naïve, naturally cycling female rats during behavioral estrous that were given the opportunity to mate with two males simultaneously. DNA analysis of offspring born following these mating encounters was used to identify the paternity of each pup. In order to assess the effect of mate choice during these mating encounters on reproductive success, one male rat in each pair was categorized as the preferred mate if the female spent more time (>50%) with him during the mating test of the present study. Furthermore, each male in the pairs was categorized as "attractive" or "non-attractive" by computing the number of females that preferred each male across many mating tests. Similar to results reported in Lovell et al. (2007), during 76% of these mating tests the same male rat in each pair was preferred by different female rats. Overall attractiveness of individual male rats predicted reproductive success in the present study. Interestingly, "attractive" males sired significantly FEWER pups than "non-attractive" males. Neither behavioral (e.g., latency to first sexual stimulation, number of sexual stimulations) nor physiological measures (e.g., body weight, urinary testosterone levels) of male rats predicted their reproductive success. In conclusion, the present results indicate that certain features of some males are more attractive to females, but attractive males are at a reproductive disadvantage (as measured by the number of pups sired). Although basal urinary testosterone levels did not differ between males that sired the majority of pups in a litter and males that sired few or none of the pups in a litter, aggression and/or other physiological measures of fertility (e.g., penile reflexes) may differ between males that are attractive to females and those that have a reproductive

  1. Perturbations to the lower ionosphere by tropical cyclone Evan in the South Pacific Region

    Science.gov (United States)

    Kumar, Sushil; NaitAmor, Samir; Chanrion, Olivier; Neubert, Torsten

    2017-08-01

    Very low frequency (VLF) electromagnetic signals from navigational transmitters propagate worldwide in the Earth-ionosphere waveguide formed by the Earth and the electrically conducting lower ionosphere. Changes in the signal properties are signatures of variations in the conductivity of the reflecting boundary of the lower ionosphere which is located in the mesosphere and lower thermosphere, and their analysis is, therefore, a way to study processes in these remote regions. Here we present a study on amplitude perturbations of local origin on the VLF transmitter signals (NPM, NLK, NAA, and JJI) observed during tropical cyclone (TC) Evan, 9-16 December 2012 when TC was in the proximity of the transmitter-receiver links. We observed a maximum amplitude perturbation of 5.7 dB on JJI transmitter during 16 December event. From Long Wave Propagation Capability model applied to three selected events we estimate a maximum decrease in the nighttime D region reference height (H') by 5.2 km (13 December, NPM) and maximum increase in the daytime D region H' by 6.1 km and 7.5 km (14 and 16 December, JJI). The results suggest that the TC caused the neutral densities of the mesosphere and lower thermosphere to lift and sink (bringing the lower ionosphere with it), an effect that may be mediated by gravity waves generated by the TC. The perturbations were observed before the storm was classified as a TC, at a time when it was a tropical depression, suggesting the broader conclusion that severe convective storms, in general, perturb the mesosphere and the stratosphere through which the perturbations propagate.

  2. Blue ocean leadership.

    Science.gov (United States)

    Kim, W Chan; Mauborgne, Renée

    2014-05-01

    Ten years ago, two INSEAD professors broke ground by introducing "blue ocean strategy," a new model for discovering uncontested markets that are ripe for growth. In this article, they apply their concepts and tools to what is perhaps the greatest challenge of leadership: closing the gulf between the potential and the realized talent and energy of employees. Research indicates that this gulf is vast: According to Gallup, 70% of workers are disengaged from their jobs. If companies could find a way to convert them into engaged employees, the results could be transformative. The trouble is, managers lack a clear understanding of what changes they could make to bring out the best in everyone. Here, Kim and Mauborgne offer a solution to that problem: a systematic approach to uncovering, at each level of the organization, which leadership acts and activities will inspire employees to give their all, and a process for getting managers throughout the company to start doing them. Blue ocean leadership works because the managers' "customers"-that is, the people managers oversee and report to-are involved in identifying what's effective and what isn't. Moreover, the approach doesn't require leaders to alter who they are, just to undertake a different set of tasks. And that kind of change is much easier to implement and track than changes to values and mind-sets.

  3. Three-dimensional modeling of blue jets and blue starters

    National Research Council Canada - National Science Library

    Victor P. Pasko; Jeremy J. George

    2002-01-01

    .... Results from a three‐dimensional fractal model based on a phenomenological probabilistic approach to the modeling of streamer coronas indicate, in particular, that blue jets and blue starters can be formed by a fast (∼1 s) accumulation of ∼110...

  4. Vitamin B12 and ketorolac on pain in Long Evans rats

    Directory of Open Access Journals (Sweden)

    Mizanur Rahman

    2016-12-01

    Full Text Available Background: Effects of vitamin B12 on pain have been demonstrated in different animal and humanstudies. But comparison of these effects with similar effects of ketorolac tromethamine (KT and theircombination have not been established. Objective: To assess the effects of vitamin B12 on pain andalso to compare them with those of the combinations of vitamin B12 with KT in rat models. Methods:This experimental study was conducted in the Department of Physiology, Bangabandhu Sheikh MujibMedical University (BSMMU, Dhaka, from March 2015 to February 2016. For this, 20 (twentyLong Evans rats (215±35 gm of both sexes were divided into control (A, with 5 ml/kg normal salineand experimental (B1, with 15 mg/kg B12; B2, with 10 mg/kg KT; B3, with B12+KT groups with 5rats in each group. All the drugs and vitamin were administered intraperitoneally in a single dose justone hour before formalin test. To evaluate the treatments’ effect on nociceptive pain, early phase (1st-5th minutes; on central analgesic system, interphase (6th-15th minutes; and on inflammatory pain,late phase (16th-60th minutes of the formalin test, were observed. In all phases, total frequency ofjerking and total duration of flexing and licking of the right hind paw were counted after administrationof subcutaneous formalin (50 μl, 2.5% injection. Statistical analysis was done by ANOVA, followedby Bonferroni post hoc test. In the interpretation of results, p≤0.05 was considered as significant.Results: B12 lowered only the jerking frequency and KT lowered both jerking frequency and flexinglicking duration significantly (p≤0.001 in the late phase of formalin test. On the other hand, combinationof B12 and KT significantly (p≤0.001 lowered both the study variables in all 3 phases of formalintest. Conclusion: From this study it may be concluded that, vitamin B12 possess analgesic effects andcombination of B12 with KT is more effective than those of their individual administration.

  5. Dietary isoflavones alter regulatory behaviors, metabolic hormones and neuroendocrine function in Long-Evans male rats

    Directory of Open Access Journals (Sweden)

    Bu Lihong

    2004-12-01

    Full Text Available Abstract Background Phytoestrogens derived from soy foods (or isoflavones have received prevalent usage due to their 'health benefits' of decreasing: a age-related diseases, b hormone-dependent cancers and c postmenopausal symptoms. However, little is known about the influence of dietary phytoestrogens on regulatory behaviors, such as food and water intake, metabolic hormones and neuroendocrine parameters. This study examined important hormonal and metabolic health issues by testing the hypotheses that dietary soy-derived isoflavones influence: 1 body weight and adipose deposition, 2 food and water intake, 3 metabolic hormones (i.e., leptin, insulin, T3 and glucose levels, 4 brain neuropeptide Y (NPY levels, 5 heat production [in brown adipose tissue (BAT quantifying uncoupling protein (UCP-1 mRNA levels] and 6 core body temperature. Methods This was accomplished by conducting longitudinal studies where male Long-Evans rats were exposed (from conception to time of testing or tissue collection to a diet rich in isoflavones (at 600 micrograms/gram of diet or 600 ppm vs. a diet low in isoflavones (at approximately 10–15 micrograms/gram of diet or 10–15 ppm. Body, white adipose tissue and food intake were measured in grams and water intake in milliliters. The hormones (leptin, insulin, T3, glucose and NPY were quantified by radioimmunoassays (RIA. BAT UCP-1 mRNA levels were quantified by PCR and polyacrylamide gel electrophoresis while core body temperatures were recorded by radio telemetry. The data were tested by analysis of variance (ANOVA (or where appropriate by repeated measures. Results Body and adipose tissue weights were decreased in Phyto-600 vs. Phyto-free fed rats. Food and water intake was greater in Phyto-600 animals, that displayed higher hypothalamic (NPY concentrations, but lower plasma leptin and insulin levels, vs. Phyto-free fed males. Higher thyroid levels (and a tendency for higher glucose levels and increased uncoupling

  6. Chronic social instability increases anxiety-like behavior and ethanol preference in male Long Evans rats.

    Science.gov (United States)

    Roeckner, Alyssa R; Bowling, Alexandra; Butler, Tracy R

    2017-05-01

    Chronic stress during adolescence is related to increased prevalence of anxiety disorders and alcohol use disorders in humans. This phenotype has been consistently recapitulated in animal models with male subjects, but models using female subjects are fewer. The aim of these studies was to test the hypothesis that chronic social instability (CSI) during adolescence engenders increased anxiety-like behavior, increased corticosterone, and greater ethanol intake and/or preference than control groups in male and female rats. A chronic social instability (CSI) procedure was conducted in separate cohorts of female and male adolescent Long Evans rats. CSI included daily social isolation for 1h, and then pair housing with a novel cage mate for 23h until the next 1h isolation period from PND 30-46. Control groups included social stability (SS), chronic isolation (ISO), and acute social instability (aSI). At PND 49-50, anxiety-like behavior was assessed on the elevated plus maze, and on PND 51 tails bloods were obtained for determination of corticosterone (CORT) levels. This was followed by 4weeks of ethanol drinking in a home cage intermittent access ethanol drinking paradigm (PND 55-81 for males, PND 57-83 for females). Planned contrast testing showed that the male CSI group had greater anxiety-like behavior compared controls, but group differences were not apparent for CORT. CSI males had significantly higher levels of ethanol preference during drinking weeks 2-3 compared to all other groups and compared to SS and ISO groups in week 4. For the female cohort, we did not observe consistent group differences in anxiety-like behavior, CORT levels were unexpectedly lower in the ISO group only compared to the other groups, and group differences were not apparent for ethanol intake/preference. In conclusion, chronic stress during adolescence in the form of social instability increases anxiety-like behavior and ethanol preference in male rats, consistent with other models of

  7. Instant BlueStacks

    CERN Document Server

    Judge, Gary

    2013-01-01

    Get to grips with a new technology, understand what it is and what it can do for you, and then get to work with the most important features and tasks. A fast-paced, example-based approach guide for learning BlueStacks.This book is for anyone with a Mac or PC who wants to run Android apps on their computer. Whether you want to play games that are freely available for Android but not your computer, or you want to try apps before you install them on a physical device or use it as a development tool, this book will show you how. No previous experience is needed as this is written in plain English

  8. Natural Blue Food Colour

    DEFF Research Database (Denmark)

    Roda-Serrat, Maria Cinta

    design is a possible approach to help overcoming the present stability issues of phycocyanin-based colorants. This thesis presents a process for cleavage of PCB from phycocyanin by solvolysis in alcohols as a first step towards the formulation of a new natural blue colorant. A pre-treatment dia......, and a set of differential equations, the model was able to predict the behaviour of the flux with a confidence level above 95 %. Three different methods of cleavage of PCB by solvolysis were evaluated in this study: conventional reflux, sealed vessel heated in an oil bath, and microwave assisted reaction...... mechanisms are suggested: a concerted E2 elimination, and a SN2 nucleophilic substitution. The stability essays on PCB showed that it is most stable when stored in dry form or in ethanol. PCB showed poor stability in water, although at moderately low temperatures and higher purity the degradation rates...

  9. Modeling Ethanol Decomposition on Transition Metals: A Combined Application of Scaling and Bronsted-Evans-Polanyi Relations

    DEFF Research Database (Denmark)

    Ferrin, P.; Simonetti, D.; Kandoi, S.

    2009-01-01

    calculations necessary to describe trends in activity and selectivity across metal and alloy surfaces, thus extending the reach of DFT to more complex systems. In-this work, the well-known family of Bronsted-Evans-Polanyi (BEP) correlations, connecting minima with maxima in the potential energy surface...... on a subset of these surfaces are calculated. Experiments on supported catalysts verify that this simple model is reasonably accurate in describing reactivity trends across metals, suggesting that the combination of BEP and scaling relations may substantially reduce the cost of DFT calculations required...

  10. Melanoma and satellite blue papule.

    Science.gov (United States)

    Oliveira, André; Arzberger, Edith; Massone, Cesare; Zalaudek, Iris; Fink-Puches, Regina; Hofmann-Wellenhof, Rainer

    2014-07-01

    The colors that are seen in dermoscopy depend on the anatomic level of the skin at which the chromophores are seen. Blue color can be found in a variety of melanocytic and nonmelanocytic lesions. An 89-year-old man presented with a 3-year history of a slow-growing, hyperpigmented patch located on the distal third of the right arm. Dermoscopy showed an atypical network, irregularly distributed globules, pigmented internal streaks and a milky-red area. Based on these findings a diagnosis of slow-growing malignant melanoma was made. Simultaneously, a well-defined blue papule was seen on the proximal third of the same arm. Dermoscopy disclosed a homogeneous blue pattern. After clinical and dermoscopic correlation our differential diagnosis for this blue lesion included cutaneous melanoma metastasis, blue nevus and foreign body reaction. The patient recalled its onset 75 years ago after a grenade explosion. We also discuss the blue lesion appearance under reflectance confocal microscopy and high-definition optical coherence tomography. Histopathological examination after excision of the hyperpigmented patch and blue papule revealed a melanoma in situ and a foreign body reaction, respectively. The diagnostic evaluation of a blue lesion should always rely on the integration of all data, especially clinical and dermoscopic features. Other non-invasive techniques, like reflectance confocal microscopy and high-definition optical coherence tomography can also be important aids for its differential diagnosis.

  11. Comparison of the disposition behavior of organic anions in an animal model for Wilson's disease (Long-Evans Cinnamon rats) with that in normal Long-Evans Agouti rats.

    Science.gov (United States)

    Itagaki, Shirou; Sugawara, Mitsuru; Kobayashi, Michiya; Miyazaki, Katsumi; Hirano, Takeshi; Iseki, Ken

    2004-04-01

    Long-Evans Cinnamon (LEC) rats have an abnormality similar to that observed in Wilson's disease in humans and are therefore a good animal model for the study of Wilson's disease. LEC rats develop hereditary hepatitis and severe jaundice. Mutant animals with hyperbilirubinemia have been widely used as animal models for human diseases. Among these mutant animals, Eisai hyperbilirubinemic rats (EHBR) have defective biliary excretion of organic anions. Thus, biliary excretion of sulfobromophthalein (BSP) and urinary excretion of phenolsulfonphthalein (PSP) in LEC rats were compared with those in Long-Evans Agouti (LEA) rats. In LEC rats, the excretion of BSP, a multidrug resistance-associated protein 2 (Mrp2/Abcc2) substrate, was significantly decreased compared to that in LEA rats. It has been reported that the transport function for organic anions on the kidney is maintained in EHBR. However, the urinary excretion of PSP is impaired in LEC rats. It is possible that organic anion transporters responsible for the urinary excretion of PSP in LEA rats and EHBR are impaired in LEC rats. It is important to elucidate the relationship between organic anion secretion and Wilson's disease.

  12. Blues fans and suicide acceptability.

    Science.gov (United States)

    Stack, S

    2000-01-01

    Research has neglected the possible impact of the blues music subculture on suicide acceptability (SA). The sad themes in the blues may attract suicidal persons and reinforce their suicidal moods and attitudes. The present study performs the first test of the thesis that associates SA with being a blues fan. It uses data on a national sample of 961 adults drawn from the General Social Survey of 1993. The results of a multivariate logistic regression analysis found that blues fans were no more accepting of suicide than nonfans. However, blues fanship was found to have substantial indirect effects on SA through its influence on such factors as lowered religiosity levels, the most important predictor of SA. Race-specific analyses found more support for the model for whites than for African Americans.

  13. Comprehensive behavioural analysis of Long Evans and Sprague-Dawley rats reveals differential effects of housing conditions on tests relevant to neuropsychiatric disorders.

    Directory of Open Access Journals (Sweden)

    Karly M Turner

    Full Text Available Genetic (G and environmental (E manipulations are known to alter behavioural outcomes in rodents, however many animal models of neuropsychiatric disorders only use a restricted selection of strain and housing conditions. The aim of this study was to examine GxE interactions comparing two outbred rat strains, which were housed in either standard or enriched cages. The strains selected were the albino Sprague-Dawley rat, commonly used for animal models, and the other was the pigmented Long Evans rat, which is frequently used in cognitive studies. Rats were assessed using a comprehensive behavioural test battery and included well-established tests frequently employed to examine animal models of neuropsychiatric diseases, measuring aspects of anxiety, exploration, sensorimotor gating and cognition. Selective strain and housing effects were observed on a number of tests. These included increased locomotion and reduced pre-pulse inhibition in Long Evans rats compared to Sprague Dawley rats; and rats housed in enriched cages had reduced anxiety-like behaviour compared to standard housed rats. Long Evans rats required fewer sessions than Sprague Dawley rats to learn operant tasks, including a signal detection task and reversal learning. Furthermore, Long Evans rats housed in enriched cages acquired simple operant tasks faster than standard housed Long Evans rats. Cognitive phenotypes in animal models of neuropsychiatric disorders would benefit from using strain and housing conditions where there is greater potential for both enhancement and deficits in performance.

  14. True blue football fan: tattoo reaction confined to blue pigment.

    Science.gov (United States)

    Yoong, Corinne; Vun, Yin Yin; Spelman, Lynda; Muir, James

    2010-02-01

    A tattoo reaction which appeared solely on the blue pigment of a 6-month old red and blue football club tattoo of an ardent fan was investigated. The patient was otherwise asymptomatic and no other abnormality was detected on full physical examination. Histology revealed a florid sarcoidal granuloma reaction to blue pigment. Preliminary investigations for systemic sarcoidosis did not reveal any abnormality. The tattoo reaction flattened clinically with the institution of a short course of topical mometasone furoate 0.1% ointment and as the subject remained asymptomatic, close surveillance for the development of systemic sarcoidosis is to continue. The possibility of delayed type hypersensitivity is discussed.

  15. We favor formal models of heuristics rather than lists of loose dichotomies: a reply to Evans and Over

    Science.gov (United States)

    Gigerenzer, Gerd

    2009-01-01

    In their comment on Marewski et al. (good judgments do not require complex cognition, 2009) Evans and Over (heuristic thinking and human intelligence: a commentary on Marewski, Gaissmaier and Gigerenzer, 2009) conjectured that heuristics can often lead to biases and are not error free. This is a most surprising critique. The computational models of heuristics we have tested allow for quantitative predictions of how many errors a given heuristic will make, and we and others have measured the amount of error by analysis, computer simulation, and experiment. This is clear progress over simply giving heuristics labels, such as availability, that do not allow for quantitative comparisons of errors. Evans and Over argue that the reason people rely on heuristics is the accuracy-effort trade-off. However, the comparison between heuristics and more effortful strategies, such as multiple regression, has shown that there are many situations in which a heuristic is more accurate with less effort. Finally, we do not see how the fast and frugal heuristics program could benefit from a dual-process framework unless the dual-process framework is made more precise. Instead, the dual-process framework could benefit if its two “black boxes” (Type 1 and Type 2 processes) were substituted by computational models of both heuristics and other processes. PMID:19784854

  16. Absence of diurnal variation in visceromotor response to colorectal distention in normal Long Evans rats [version 1; referees: 2 approved

    Directory of Open Access Journals (Sweden)

    Sara Botschuijver

    2016-01-01

    Full Text Available Background: Enhanced colorectal sensitivity (i.e. visceral hypersensitivity is thought to be a pathophysiological mechanism in irritable bowel syndrome (IBS. In healthy men a circadian variation in rectal perception to colonic distention was described. Disturbed day and night rhythms, which occur in shift work and trans meridian flights, are associated with the prevalence of IBS. This raises the question whether disruptions of circadian control are responsible for the observed pathology in IBS. Prior to investigating altered rhythmicity in relation to visceral hypersensitivity in a rat model for IBS, it is relevant to establish whether normal rats display circadian variation similar to healthy men.  Methodology and findings: In rodents colorectal distension leads to reproducible contractions of abdominal musculature. We used quantification of this so called visceromotor response (VMR by electromyography (EMG to assess visceral sensitivity in rats. We assessed the VMR in normal male Long Evans rats at different time points of the light/dark cycle. Although a control experiment with male maternal separated rats confirmed that intentionally inflicted (i.e. stress induced changes in VMR can be detected, normal male Long Evans rats showed no variation in VMR along the light/dark cycle in response to colorectal distension. Conclusions: In the absence of a daily rhythm of colorectal sensitivity in normal control rats it is not possible to investigate possible aberrancies in our rat model for IBS.

  17. Effects of Moderate Alcohol Intake in the Bladder of the Otsuka Long Evans Tokushima Fatty Diabetic Rats.

    Science.gov (United States)

    Bae, Woong Jin; Choi, Yong Sun; Kim, Su Jin; Cho, Hyuk Jin; Hong, Sung Hoo; Kim, Sae Woong; Hwang, Tae-Kon; Kim, Dai Jin; Lee, Ji Youl

    2015-09-01

    Diabetes is related with a number of cystopathic complications. However, there have been no studies about the influence of alcohol consumption in the bladder of type 2 diabetes. Thus, we investigated the effect of moderate alcohol intake in the bladder of the Otsuka Long Evans Tokushima Fatty (OLETF) diabetic rat. The non-diabetic Long-Evans Tokushima Otsuka (LETO, n=14) and the OLETF control group (n=14) were fed an isocaloric diet; the LETO (n=14) and the OLETF ethanol group (n=14) were fed 36% ethanol 7 g/kg/day. After ten weeks, muscarinic receptors, RhoGEFs, myogenic change, and the level of oxidative stress were evaluated. Moderate alcohol intake significantly decreased excessive muscarinic receptor and Rho kinase expressions in the OLETF rats compared with the LETO rats. In addition, iNOS and collagen expression were not changed in the OLETF rats in spite of alcohol consumption. Superoxide dismutase levels, which is involved in antioxidant defense, in the LETO rats were significantly decreased after alcohol consumption, however those in the OLETF rats were similar. Moderate alcohol consumption reduces the oxidative stress, and may prevent molecular and pathologic changes of the bladder of rats with type 2 diabetes.

  18. Ecology of blue straggler stars

    CERN Document Server

    Carraro, Giovanni; Beccari, Giacomo

    2015-01-01

    The existence of blue straggler stars, which appear younger, hotter, and more massive than their siblings, is at odds with a simple picture of stellar evolution. Such stars should have exhausted their nuclear fuel and evolved long ago to become cooling white dwarfs. They are found to exist in globular clusters, open clusters, dwarf spheroidal galaxies of the Local Group, OB associations and as field stars. This book summarises the many advances in observational and theoretical work dedicated to blue straggler stars. Carefully edited extended contributions by well-known experts in the field cover all the relevant aspects of blue straggler stars research: Observations of blue straggler stars in their various environments; Binary stars and formation channels; Dynamics of globular clusters; Interpretation of observational data and comparison with models. The book also offers an introductory chapter on stellar evolution written by the editors of the book.

  19. Karner Blue Butterfly Recovery Plan

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This recovery plan has been prepared by the Karner Blue Butterfly Recovery Team under the leadership of Dr. David Andow, University of Minnesota-St. Paul. Dr. John...

  20. Hydrology, microbiology and carbon cycling at a high Arctic polythermal glacier, (John Evans Glacier, Ellesmere Island, Canada)

    Science.gov (United States)

    Skidmore, Mark Leslie

    Analysis of the hydrology, hydrochemistry and microbiology at polythermal John Evans Glacier and geochemical and isotopic data from Haut Glacier d'Arolla demonstrates that certain subglacial chemical weathering processes are microbially mediated. Subglacial drainage is likely an annual occurrence beneath John Evans Glacier and solute rich subglacial waters indicate over winter storage at the glacier bed. Subglacial microbial populations are also present, and are viable under simulated near in situ conditions at 0.3°C. This suggests that temperate subglacial environments at a polythermal glacier, which are isolated by cold ice above and around them, provide a viable habitat for life where basal water and organic carbon are present throughout the year. Thus, a subglacial microbial ecosystem based upon legacy carbon, (from old soils or surface inputs) rather than primary production may exist, where redox processes are a key component, and seasonal anoxia may occur. The existence of anoxic environments is supported by the presence of strictly anaerobic bacteria (sulphate reducing bacteria and methanogens) in the basal sediments---which are viable in culture at 4°C---and also argues that these bacteria are not washed in with oxygenated surface meltwaters, but are present in the subglacial environment. During the summer meltseason there is a large input of surficial waters to the subglacial system and water residence times are drastically reduced. Hence, kinetic weathering processes dominate, resulting in light delta 13C-DIC (dissolved inorganic carbon) in glacial runoff, as verified by experimental work on CaCO3 and John Evans Glacier sediments. The experiments demonstrate kinetic bedrock fractionation (KBF) during carbonate hydrolysis and that kinetic fractionation of CO2 (KFC) is proportional to the rate of CO2 draw down during the carbonation of carbonates. This results in significantly depleted delta13C-DIC values (≤-16 ‰) relative to the bedrock carbonate

  1. Mozart K.448 attenuates spontaneous absence seizure and related high-voltage rhythmic spike discharges in Long Evans rats.

    Science.gov (United States)

    Lin, Lung-Chang; Juan, Chun-Ting; Chang, Hsueh-Wen; Chiang, Ching-Tai; Wei, Ruey-Chang; Lee, Mei-Wen; Mok, Hin-Kiu; Yang, Rei-Cheng

    2013-05-01

    Recent research has revealed more evidence supporting the positive effects of music on humans and animals. However, evidence of music's effects on improving epilepsy in animals is sparse. This study aimed to clarify the influence of Mozart's music in Long Evans rats, which are characterized by spontaneous absence epilepsy (SAE) and high-voltage rhythmic spike (HVRS) discharges. Continuous electroencephalograms comprised of HVRS discharges, and behavioral performance were recorded in Long Evans rats (n=5) before, during, and after exposure to the Mozart's Sonata for Two Pianos in D Major, K.448 (Mozart K.448). The same evaluation was repeated after they had been subjected to daily exposure of the music for 20 days. Seizure frequencies and spontaneous HVRS discharges were reduced in all of the SAE rats during and after music exposure compared with the pre-music stage. The average seizure frequencies were 79.8±24.6, 48±15.2, and 33±12.1/h before, during, and after music exposure, respectively. The average run of spike episodes were 84.6±18.4, 52±17.8, and 36.8±16.9/h before, during, and after music exposure, respectively. The seizure frequencies and related run of spike episodes decreased by 39.8% and 38.5% during, and 58.6% and 56.6% post music exposure, respectively. The average run of spike durations and spike numbers also showed significant decreases (reduction by 47.1%, 47.8% during music and 60.8%, 61.3% post music). After daily music exposure for 20 days, the number of HVRS discharges and seizure frequencies during and after music exposure, however, showed no further accumulative reduction or adaptation effect. These results suggest that Mozart K.448 had a positive short-term effect in attenuating the spontaneous HVRS discharges in Long Evans rats. However, the mechanism needs further investigation. Copyright © 2013 Elsevier B.V. All rights reserved.

  2. Majka, žena, učenica. Mjesto i uloga Isusove majke u Ivanovu evanđelju

    OpenAIRE

    DUGANDŽIĆ, Ivan

    2005-01-01

    Četvrto evanđelje o Isusovoj majci Mariji govori na tri mjesta: u izvješću o prvom Isusovu znamenju na svadbi u Kani Galilejskoj (2,1-11); u raspravi Židova o Isusovu porijeklu (6,42) i u prizoru podno Isusova križa (19,25-27). U teološkom pogledu posebno se zanimljivim čine prvo i zadnje mjesto, jer u Kani Galilejskoj Isus prvi put javno nastupa kao Izraelov Mesija, a scena podno križa predstavlja zadnji čin njegova života prije konačne proslave. Čini se da oba mjesta daleko nadilaze povijes...

  3. Correction of liver disease following transplantation of normal rat hepatocytes into Long-Evans Cinnamon rats modeling Wilson's disease.

    Science.gov (United States)

    Irani, A N; Malhi, H; Slehria, S; Gorla, G R; Volenberg, I; Schilsky, M L; Gupta, S

    2001-03-01

    To establish the efficacy of cell therapy in Wilson's disease, we used the Long-Evans Cinnamon (LEC) rat model with atp7b gene mutation and copper toxicosis. Several groups of LEC rats were established, including animals pretreated with retrorsine to exacerbate copper toxicosis and inhibit proliferation in native hepatocytes followed by partial hepatectomy to promote liver repopulation. Hepatocytes from normal, syngeneic LEA rats were transplanted intrasplenically. Animal survival, biliary copper excretion, and hepatic copper were determined. The magnitude of liver repopulation was demonstrated by measuring serum ceruloplasmin and hepatic atp7b mRNA. Long-term survival in LEC rats treated with retrorsine, partial hepatectomy, and cell transplantation was up to 90%, whereas fewer than 10% of animals pretreated with retrorsine, without cell therapy, survived, P Wilson's disease.

  4. Additional information for “TREMOR: A Wireless, MEMS Accelerograph for Dense Arrays” (Evans et al., 2003)

    Science.gov (United States)

    Evans, John R.; Hamstra, Robert H.; Spudich, Paul; Kundig, Christoph; Camina, Patrick; Rogers, John A.

    2003-01-01

    The length of Evans et al. (2003) necessitated transfer of several less germane sections to this alternate forum to meet that venue’s needs. These sections include a description of the development of Figure 1, the plot of spatial variability so critical to the argument for dense arrays of strong-motion instruments; the description of the rapid, integer, computational method for PGV used in the TREMOR instrument (the Oakland instrument, the commercial prototype, and the commercial instrument); siting methods and strategies used for Class B TREMOR instruments and those that can be used for Class C instruments to preserve the cost advantages of such systems; and some general discussion of MEMS accelerometers, including a comparative Table with representative examples of Class A, B and C MEMS devices. (“MEMS” means “Micro-ElectroMechanical” Systems—“micromachined” sensors, generally of silicon. Classes A, B, and C are defined in Table 1.)

  5. Evolution of exchangeable copper and relative exchangeable copper through the course of Wilson's disease in the Long Evans Cinnamon rat.

    Science.gov (United States)

    Schmitt, Françoise; Podevin, Guillaume; Poupon, Joël; Roux, Jérôme; Legras, Pierre; Trocello, Jean-Marc; Woimant, France; Laprévote, Olivier; Nguyen, Tuan Huy; El Balkhi, Souleiman

    2013-01-01

    Wilson's disease (WD) is an inherited disorder of copper metabolism leading to liver failure and/or neurological impairment. Its diagnosis often remains difficult even with genetic testing. Relative exchangeable copper (REC) has recently been described as a reliable serum diagnostic marker for WD. The aim of this study was to validate the use of REC in the Long Evans Cinnamon (LEC) rat, an animal model for WD, and to study its relevance under different conditions in comparison with conventional markers. Two groups of LEC rats and one group of Long-Evans (LE) rats were clinically and biologically monitored from 6 to 28 weeks of age. One group of LEC rats was given copper-free food. The other groups had normal food. Blood samples were collected each month and different serum markers for WD (namely ceruloplasmin oxidase activity, exchangeable copper (CuEXC), total serum copper and REC) and acute liver failure (serum transaminases and bilirubinemia) were tested. Every LEC rat under normal food developed acute liver failure (ALF), with 40% global mortality. Serum transaminases and bilirubinemia along with total serum copper and exchangeable copper levels increased with the onset of acute liver failure. A correlation was observed between CuEXC values and the severity of ALF. Cut-off values were different between young and adult rats and evolved because of age and/or liver failure. Only REC, with values >19%, was able to discriminate LEC groups from the LE control group at every time point in the study. REC sensitivity and specificity reached 100% in adults rats. REC appears to be independent of demographic or clinical data in LEC rats. It is a very simple and reliable blood test for the diagnosis of copper toxicosis owing to a lack of ATP7B function. CuEXC can be used as an accurate biomarker of copper overload.

  6. Impulsive choice predicts anxiety-like behavior, but not alcohol or sucrose consumption, in male Long-Evans rats.

    Science.gov (United States)

    Stein, Jeffrey S; Renda, C Renee; Barker, Shayne M; Liston, Kennan J; Shahan, Timothy A; Madden, Gregory J

    2015-05-01

    Prior human research indicates robust, positive relations between impulsive choice (i.e., preference for smaller, immediate over larger, delayed rewards) and alcohol use disorders. However, varied findings in the nonhuman literature reveal a relatively ambiguous relation between impulsive choice and alcohol consumption in rodents. In addition, few rodent studies have investigated potential relations between impulsive choice and common covariates of alcohol consumption (e.g., avidity for sweet substances or anxiety-like behavior). Ninety-two male Long-Evans rats completed an impulsive-choice task. From this larger sample, extreme high- and low-impulsive groups (n = 30 each) were retained for further testing. In separate tests, subsequent open-field behavior and consumption of oral alcohol (12% w/v) and isocaloric sucrose were examined. Impulsive choice was then retested to examine whether behavior remained stable over the course of the experiment. No significant relations emerged between impulsive choice and either alcohol or sucrose consumption. However, impulsive choice predicted greater anxiety-like behavior (avoidance of the center field, defecation) in the open-field test. In turn, greater anxiety predicted lower alcohol and sucrose consumption. Finally, choice remained generally stable across the experiment, although high-impulsive rats tended toward less impulsive choice in the retest. Although impulsive choice and alcohol consumption appear to share some variance with anxiety-like behavior, the present data offer no support for a relation between impulsive choice and alcohol consumption in Long-Evans rats. Together with mixed rodent data from prior reports, these findings attenuate cross-species comparisons to human relations between impulsive choice and alcohol use disorders. Copyright © 2015 by the Research Society on Alcoholism.

  7. The influence of maternal high fat diet on ozone-induced lung injury and inflammation in Long Evans male and female rat offspring

    Science.gov (United States)

    There is a growing interest in understanding how maternal diet can increase the sensitivity of offspring to environmental exposures. In this study, we examined the influence of high fat diet (HFD) during puberty, pregnancy and lactation in Long Evans rats on the susceptibility of...

  8. Influencing the nursing commitment to workforce satisfaction and the origins of magnet: an interview with Dr Michael Evans by Jeffrey M. Adams.

    Science.gov (United States)

    Evans, Michael

    2013-10-01

    This department highlights nursing leaders who have demonstrated a commitment to patient care leadership. This interview profiles Michael Evans, PhD, RN, FAAN, dean of the Texas Tech University School of Nursing and president of the American Nurses Credentialing Center.

  9. Evaluation of Code Blue Implementation Outcomes

    OpenAIRE

    Bengü Özütürk; Nalan Muhammedoğlu; Emel Dal; Berna Çalışkan

    2015-01-01

    Aim: In this study, we aimed to emphasize the importance of Code Blue implementation and to determine deficiencies in this regard. Methods: After obtaining the ethics committee approval, 225 patient’s code blue call data between 2012 and 2014 January were retrospectively analyzed. Age and gender of the patients, date and time of the call and the clinics giving Code Blue, the time needed for the Code Blue team to arrive, the rates of false Code Blue calls, reasons for Code...

  10. Bonney's blue cystitis: a warning.

    Science.gov (United States)

    Christmas, T J; Chapple, C R; Payne, S D; Milroy, E J; Warwick, R T

    1989-03-01

    The instillation of diluted Bonney's blue into the bladder during gynaecological operations has been quite common practice over the last 50 years. Bonney's blue is composed of a 1:1 mixture of brilliant green and crystal violet dissolved in ethanol (90%) or industrial methylated spirit. Before insertion into the bladder this solution must be diluted with water to a 0.5% solution. Failure to do this will result in a severe inflammatory reaction within the bladder. The degree of resultant damage depends upon the duration of exposure. Persistent pain is a feature of this condition, although the other symptoms (frequency and urgency) may settle in time. Two cases of chemical cystitis resulting from the use of undiluted Bonney's blue are described to illustrate the possible consequences. Both patients were awarded 6-figure sums as compensation.

  11. Why Do Proteins Glow Blue?

    CERN Document Server

    Sarkar, Sohini; Hazra, Partha; Mandal, Pankaj

    2014-01-01

    Recent literatures reported blue-green emission from amyloid fibril as exclusive signature of fibril formation. This unusual visible luminescence is regularly used to monitor fibril growth. Blue-green emission has also been observed in crystalline protein and in solution. However, the origin of this emission is not known exactly. Our spectroscopic study of serum proteins reveals that the blue-green emission is a property of protein monomer. Evidences suggest that semiconductor-like band structure of proteins with the optical band-gap in the visible region is possibly the origin of this phenomenon. We show here that the band structure of proteins is primarily the result of electron delocalization through the peptide chain, rather than through the hydrogen bond network in secondary structure.

  12. Agminated blue nevus - Case report*

    Science.gov (United States)

    Lisboa, Alice Paixão; Silvestre, Keline Jácome; Pedreira, Renata Leite; Alves, Natália Ribeiro de Magalhães; Obadia, Daniel Lago; Azulay-Abulafia, Luna

    2016-01-01

    Blue nevi are benign melanocytic lesions located in the deeper reticular dermis, consequence of failure of melanocytic migration into the dermal-epidermal junction from the neural crest. Lesions are usually asymptomatic and solitary, but may present in a multiple or agminated (grouped) pattern. The agminated subtype is formed when bluish-pigmented lesions cluster together in a well-defined area. Lesions can be flat or raised. We report the case of a patient who presented multiple bluish macules (1-3 mm in diameter) grouped on the left upper back. Dermoscopy and anatomic pathological examination were consistent with blue nevus. PMID:27828645

  13. Baby blues: identification and intervention.

    Science.gov (United States)

    Hansen, C H

    1990-01-01

    Transitory postpartum depressive syndrome or baby blues affects up to 80% of all newly delivered women. Baby Blues is so common it may be considered normal. While one of the more mild forms of depression after child birth, it can still be disruptive to the family unit. Both physiological and psychosocial factors contribute to the syndrome. Appropriate nursing assessment and intervention throughout the childbearing cycle can be very beneficial in helping families to understand and cope with the problem, as well as help prevent more serious depressive syndromes.

  14. Laponite blue: dissolving the insoluble.

    Science.gov (United States)

    Lezhnina, Marina M; Grewe, Tobias; Stoehr, Hardo; Kynast, Ulrich

    2012-10-15

    The neutral organic dye indigo forms an inorganic-organic hybrid material with nanoclays (see picture; blue circles on disks symbolizing indigo, spheres indicating liberated cations) and can thus be transferred into aqueous solution. Solids recovered from these solutions resemble the ancient Maya Blue pigment. The method can also be applied to other hydrophobic species and may open the gate for novel solution chemistry, including photonic and catalytic applications. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  15. Nobel Prize for blue LEDs

    Science.gov (United States)

    Kraftmakher, Yaakov

    2015-05-01

    A brief review of lighting technologies is presented. Unavoidable restrictions for incandescent light bulbs caused by the Planck distribution and properties of the human eye are illustrated. The efficiency and luminous efficacy of thermal radiation are calculated for various temperatures; the results clearly show the limitations for thermal radiators. The only way to overcome these limitations is using non-thermal radiators, such as fluorescent lamps and light-emitting diodes (LEDs). Unique advantages of LEDs undoubtedly made a revolution in this field. A crucial element of this progress is the blue LEDs (Nobel Prize 2014). Some experiments with a blue and a green LED are described: (i) the luminescence triggered in a green-yellow phosphor inside a white LED by the blue LED; (ii) radiant spectra and ‘efficiency droop’ in the LEDs; (iii) modulation of the blue LED up to 4 MHz; and (iv) the h/e ratio from the turn-on voltage of the green LED. The experiments are suitable for undergraduate laboratories and usable as classroom demonstrations.

  16. Blue Ocean vs. Five Forces

    NARCIS (Netherlands)

    A.E. Burke (Andrew); A.J. van Stel (André); A.R. Thurik (Roy)

    2010-01-01

    textabstractThe article reports on the authors' research in the Netherlands which focused on a profit model in Dutch retail stores and a so-called blue-ocean approach which requires a new market that attracts consumers and increases profits. Topics include the competitive strategy approach to

  17. The blue revolution in asia

    DEFF Research Database (Denmark)

    Jespersen, Karen Sau; Ponte, Stefano; Kelling, Ingrid

    2014-01-01

    In this article, we examine the upgrading trajectories of selected aquaculture value chains in four Asian countries and the links between upgrading and three factors of value chain governance: coordination mechanisms; types of drivers; and domestic regulation. We find instances of improving produ...... of upgrading the "blue revolution" in Asia...

  18. Anti-obesity effects of granulocyte-colony stimulating factor in Otsuka-Long-Evans-Tokushima fatty rats.

    Directory of Open Access Journals (Sweden)

    Yonggu Lee

    Full Text Available Granulocyte-colony stimulating factor (G-CSF has molecular structures and intracellular signaling pathways that are similar to those of leptin and ciliary neurotropic factor (CNTF. It also has immune-modulatory properties. Given that leptin and CNTF play important roles in energy homeostasis and that obesity is an inflammatory condition in adipose tissue, we hypothesized that G-CSF could also play a role in energy homeostasis. We treated 12 38-week-old male Otsuka-Long-Evans-Tokushima fatty rats (OLETF, diabetic and 12 age-matched male Long-Evans-Tokushima rats (LETO, healthy with 200 µg/day G-CSF or saline for 5 consecutive days. Body weight reduction was greater in G-CSF-treated OLETF (G-CSF/OLETF than saline-treated OLETF (saline/OLETF following 8 weeks of treatment (-6.9±1.6% vs. -3.1±2.2%, p<0.05. G-CSF treatment had no effect on body weight in LETO or on food intake in either OLETF or LETO. Body fat in G-CSF/OLETF was more reduced than in saline/OLETF (-32.2±3.1% vs. -20.8±6.2%, p<0.05. Energy expenditure was higher in G-CSF/OLETF from 4 weeks after the treatments than in saline/OLETF. Serum levels of cholesterol, triglyceride, interleukin-6 and tumor necrosis factor-α were lower in G-CSF/OLETF than in saline/OLETF. Uncoupling protein-1 (UCP-1 expression in brown adipose tissue (BAT was higher in G-CSF/OLETF than in saline/OLETF, but was unaffected in LETO. Immunofluorescence staining and PCR results revealed that G-CSF receptors were expressed in BAT. In vitro experiments using brown adipocyte primary culture revealed that G-CSF enhanced UCP-1 expression from mature brown adipocytes via p38 mitogen-activated protein kinase pathway. In conclusion, G-CSF treatment reduced body weight and increased energy expenditure in a diabetic model, and enhanced UCP-1 expression and decreased inflammatory cytokine levels may be associated with the effects of G-CSF treatment.

  19. Code Blue evaluation in children's hospital.

    Science.gov (United States)

    Sahin, Kubra Evren; Ozdinc, Oktay Zeki; Yoldas, Suna; Goktay, Aylin; Dorak, Selda

    2016-01-01

    True alarm rate of the Code Blue cases is at a low level in the Dr. Behçet Uz Children's Hospital in İzmir. This study aims to analyse the use of the Code Blue alarm cases in the children's hospital. This retrospective clinical study evaluated the age and the gender of the cases, the arriving time of the Code Blue team, the date and time of the Code Blue Call, the reasons of the Code Blue Call, and the verification which were all obtained from the Code Blue forms of the hospital dated between January 2014 and January 2015. The data of 139 Code Blue cases' forms were investigated and was divided into two groups: before and after the education containing 88 and 51 cases, respectively. Conversive disorder (26% to 13%, Pode Blue cases were false calls with female greater than male (Pode that is to say pre-diagnosis team should be formed.

  20. Preliminary study on serum enzyme changes in Long Evans rats given parenteral ochratoxin A, aflatoxin B1 and their combination.

    Science.gov (United States)

    Brownie, C F; Brownie, C

    1988-06-01

    Long Evans rats of both sexes were each administered a total of 250 micrograms aflatoxin B1 (AFB1), ochratoxin-A (OCH-A) or 500 micrograms AFB1 + OCH-A (1:1 ratio) in corn oil over 5 equal daily intraperitoneal (IP) injections of 50 micrograms/rat/day. Control rats were given a total of 1.25 ml corn oil over 5 equal daily IP injections of 0.25 ml/rat. All rats were observed daily for clinical signs of toxicity. Twenty-four hr following the last injection all rats were weighed, killed, examined for gross pathologic lesions and blood samples collected for routine hematologic and serum chemistry evaluation. All rats gained weight over the treatment period. Though not significantly different among the treatment groups, weight gain was significantly greater for males (54.0 g) than females (33.8 g). Routine hematology showed no difference among treatment groups. Serum enzyme aspartate aminotransferase (AST = SGOT) activities were indicative of hepatoxicity. Lactate dehydrogenase (LDH) activity was significantly increased in the AFB1 and AFB1 + OCH-A treatment groups, signifying a possible interaction between these 2 mycotoxins. LDH isoenzyme fractionation studies would be helpful in delineating the organ system(s) involved and the possible diagnostic value of this interaction.

  1. 21 CFR 133.106 - Blue cheese.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Blue cheese. 133.106 Section 133.106 Food and... CONSUMPTION CHEESES AND RELATED CHEESE PRODUCTS Requirements for Specific Standardized Cheese and Related Products § 133.106 Blue cheese. (a) Description. (1) Blue cheese is the food prepared by the procedure set...

  2. Enantioselective syntheses of lignin models: an efficient synthesis of B-O-4 dimers and trimers by using the Evans chiral auxiliary

    Science.gov (United States)

    Costyl N. Njiojob; Joseph J. Bozell; Brian K. Long; Thomas Elder; Rebecca E. Key; William T. Hartwig

    2016-01-01

    We describe an efficient five-step, enantioselective synthesis of (R,R)- and (S,S)-lignin dimer models possessing a B-O-4 linkage, by using the Evans chiral aldol reaction as a key step. Mitsunobu inversion of the (R,R)- or (S,S)-isomers generates the corresponding (R,S)- and (S,R)-diastereomers. We further extend this approach to the...

  3. Comment on papers by Evans et al. and Mekel-Bobrov et al. on Evidence for Positive Selection of MCPH1 and ASPM.

    Science.gov (United States)

    Timpson, Nicholas; Heron, Jon; Smith, George Davey; Enard, Wolfgang

    2007-08-24

    Evans et al. and Mekel-Bobrov et al. (Reports, 9 September 2005, p. 1717 and 1720, respectively) reported that human genetic variants of Microcephalin (MCPH1) and abnormal spindle-like microcephaly associated (ASPM) are under strong positive selection. We genotyped these variants in 9000 children and find no meaningful associations with brain size and various cognitive measures, which indicates that contrary to previous speculations, ASPM and MCPH1 have not been selected for brain-related effects.

  4. Status of Blue Ridge Reservoir

    Energy Technology Data Exchange (ETDEWEB)

    1990-09-01

    This is one in a series of reports prepared by the Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overview of Blue Ridge Reservoir summarizes reservoir and watershed characteristics, reservoir uses and use impairments, water quality and aquatic biological conditions, and activities of reservoir management agencies. This information was extracted from the most current reports and data available, as well as interview with water resource professionals in various federal, state, and local agencies. Blue Ridge Reservoir is a single-purpose hydropower generating project. When consistent with this primary objective, the reservoir is also operated to benefit secondary objectives including water quality, recreation, fish and aquatic habitat, development of shoreline, aesthetic quality, and other public and private uses that support overall regional economic growth and development. 8 refs., 1 fig.

  5. Thermoluminescence (TL) of Egyptian Blue

    Energy Technology Data Exchange (ETDEWEB)

    Schvoerer, M.; Delavergne, M.-C.; Chapoulie, R.

    1988-01-01

    Egyptian Blue is a synthesized crystalline pictorial pigment with formula CaCuSi/sub 4/O/sub 10/. It has been used in Egypt and Mesopotamia from the 3rd millenium B.C. A preliminary experiment on a recently synthesized sample showed that this pigment is thermoluminescent after ..beta.. irradiation (/sup 90/Sr). As the signal intensity grows linearly with the administered dose within the temperature range commonly used in TL dating, we have been looking for this phenomenon from archaeological pigments. It was encountered with two samples found in excavation. From its intensity and stability we concluded that Egyptian Blue can be dated using TL. This first and positive result encouraged us to extend the method to other types of mineral pigments synthesized by early man, and to suggest that it may be used for direct dating of ancient murals.

  6. The Physics of the Blues

    Science.gov (United States)

    Gibson, J. Murray

    2009-03-01

    In looking at the commonalities between music and science, one sees that the musician's palette is based on the principles of physics. The pitch of a musical note is determined by the frequency of the sound wave. The scales that musicians use to create and play music can be viewed as a set of rules. What makes music interesting is how musicians develop those rules and create ambiguity with them. I will discuss the evolution of western musical scales in this context. As a particular example, ``Blue'' notes are very harmonic notes that are missing from the equal temperament scale. The techniques of piano blues and jazz represent the melding of African and Western music into something totally new and exciting. Live keyboard demonstrations will be used. Beyond any redeeming entertainment value the talk will emphasize the serious connections between science and art in music. Nevertheless tips will be accepted.

  7. Ol' Blue Eyes, in Focus

    Science.gov (United States)

    Nelson, Michael

    2009-01-01

    Scholarly books with "identity" and "culture" in the title have loomed large on academic publishing lists for several years. Scholarly books with "Sinatra" in the title are a more recent phenomenon. Despite his six-decade career as the Voice (the 1940s), the Chairman of the Board (the 50s and 60s), and Ol' Blue Eyes (the 70s through his death, in…

  8. Faktor-faktor yang Mempengaruhi Postpartum Blues

    OpenAIRE

    ', Desfanita '; ', Misrawati '; ', Arneliwati '

    2016-01-01

    Postpartum blues (baby blues)is a sad condition which is faced by certain mothers after giving birth, every mothers has a tendency for having a postpartum blues (baby blues). The purpose of this study is to explore the factors which affect the postpartum blues syndrome. The analysis method of this study used a descriptive correlation design. The study was held in the state hospital of Riau (RSUD Arifin Achmad) and Petala Bumi hospital. A purposive sampling technigue. Was used in this study to...

  9. Models of Individual Blue Stragglers

    Science.gov (United States)

    Sills, Alison

    This chapter describes the current state of models of individual blue stragglers. Stellar collisions, binary mergers (or coalescence), and partial or ongoing mass transfer have all been studied in some detail. The products of stellar collisions retain memory of their parent stars and are not fully mixed. Very high initial rotation rates must be reduced by an unknown process to allow the stars to collapse to the main sequence. The more massive collision products have shorter lifetimes than normal stars of the same mass, while products between low mass stars are long-lived and look very much like normal stars of their mass. Mass transfer can result in a merger, or can produce another binary system with a blue straggler and the remnant of the original primary. The products of binary mass transfer cover a larger portion of the colour-magnitude diagram than collision products for two reasons: there are more possible configurations which produce blue stragglers, and there are differing contributions to the blended light of the system. The effects of rotation may be substantial in both collision and merger products, and could result in significant mixing unless angular momentum is lost shortly after the formation event. Surface abundances may provide ways to distinguish between the formation mechanisms, but care must be taken to model the various mixing mechanisms properly before drawing strong conclusions. Avenues for future work are outlined.

  10. On the occasion of the first interconnection, LHC Project Leader Lyn Evans tests out the co-activity principle in the tunnel, in other words the performance of several tasks in parallel for the installation of the LHC.

    CERN Multimedia

    2005-01-01

    On the occasion of the first interconnection, LHC Project Leader Lyn Evans tests out the co-activity principle in the tunnel, in other words the performance of several tasks in parallel for the installation of the LHC.

  11. Localized Eruptive Blue Nevi after Herpes Zoster

    Directory of Open Access Journals (Sweden)

    Fany Colson

    2016-05-01

    Full Text Available A 52-year-old White man presented with a dozen small, well-restricted, punctiform, asymptomatic, blue-gray macules on the left shoulder. A few months earlier, he had been treated with oral acyclovir for herpes zoster (HZ affecting the left C7–C8 dermatomes. All the blue macules appeared over a short period of time and then remained stable. The patient had not experienced any previous trauma or had tattooing in this anatomical region. The clinical diagnosis suggested blue nevi. Dermatoscopy revealed small, well-limited, dark-blue, compact, homogeneous areas evoking dermal blue nevi. An excisional biopsy was performed and the histological examination confirmed a blue nevus. As far as we are aware of, this is the first report of eruptive blue nevi following HZ, and it should be included in the differential diagnosis of zosteriform dermatoses responding to an isotopic pathway. In addition, a brief review concerning eruptive nevi is presented.

  12. Properties of Open Clusters Containing Blue Stragglers

    Science.gov (United States)

    Lee, Hyun-Uk; Chang, Heon-Young

    2017-06-01

    The presence of blue stragglers pose challenges to standard stellar evolution theory, in the sense that explaining their presence demands a complex interplay between stellar evolution and cluster dynamics. In the meantime, mass transfer in binary systems and stellar collisions are widely studied as a blue straggler formation channel. We explore properties of the Galactic open clusters where blue stragglers are found, in attempting to estimate the relative importance of these two favored processes, by comparing them with those resulting from open clusters in which blue stragglers are absent as of now. Unlike previous studies which require a sophisticated process in understanding the implication of the results, this approach is straightforward and has resulted in a supplementary supporting evidence for the current view on the blue straggler formation mechanism. Our main findings are as follows: (1) Open clusters in which blue stragglers are present have a broader distribution with respect to the Z-axis pointing towards the North Galactic Pole than those in which blue stragglers are absent. The probability that two distributions with respect to the Z-axis are drawn from the same distribution is 0.2%. (2) Average values of log_{10}(t) of the clusters with blue stragglers and those without blue stragglers are 8.58 ± 0.232 and 7.52 ± 0.285, respectively. (3) The clusters with blue stragglers tend to be relatively redder than the others, and are distributed broader in colors. (4) The clusters with blue stragglers are likely brighter than those without blue stragglers. (5) Finally, blue stragglers seem to form in condensed clusters rather than simply dense clusters. Hence, we conclude that mass transfer in binaries seems to be a relatively important physical mechanism of the generation of blue stragglers in open clusters, provided they are sufficiently old.

  13. Adsorption of Methylene Blue, Bromophenol Blue, and Coomassie Brilliant Blue by α-chitin nanoparticles.

    Science.gov (United States)

    Dhananasekaran, Solairaj; Palanivel, Rameshthangam; Pappu, Srinivasan

    2016-01-01

    Expelling of dyestuff into water resource system causes major thread to the environment. Adsorption is the cost effective and potential method to remove the dyes from the effluents. Therefore, an attempt was made to study the adsorption of dyestuff (Methylene Blue (MB), Bromophenol Blue (BPB) and Coomassie Brilliant Blue (CBB)) by α-chitin nanoparticles (CNP) prepared from Penaeus monodon (Fabricius, 1798) shell waste. On contrary to the most recognizable adsorption studies using chitin, this is the first study using unique nanoparticles of ⩽50 nm used for the dye adsorption process. The results showed that the adsorption process increased with increase in the concentration of CNP, contact time and temperature with the dyestuff, whereas the adsorption process decreased with increase in the initial dye concentration and strong acidic pH. The results from Fourier transform infrared (FTIR) spectroscopy confirmed that the interaction between dyestuff and CNP involved physical adsorption. The adsorption process obeys Langmuir isotherm (R (2) values were 0.992, 0.999 and 0.992 for MB, BPB and CBB, and RL value lies between 0 and 1 for all the three dyes) and pseudo second order kinetics (R (2) values were 0.996, 0.999 and 0.996 for MB, BPB and CBB) more effectively. The isotherm and kinetic models confirmed that CNP can be used as a suitable adsorbent material for the removal of dyestuff from effluents.

  14. Adsorption of Methylene Blue, Bromophenol Blue, and Coomassie Brilliant Blue by α-chitin nanoparticles

    Directory of Open Access Journals (Sweden)

    Solairaj Dhananasekaran

    2016-01-01

    Full Text Available Expelling of dyestuff into water resource system causes major thread to the environment. Adsorption is the cost effective and potential method to remove the dyes from the effluents. Therefore, an attempt was made to study the adsorption of dyestuff (Methylene Blue (MB, Bromophenol Blue (BPB and Coomassie Brilliant Blue (CBB by α-chitin nanoparticles (CNP prepared from Penaeus monodon (Fabricius, 1798 shell waste. On contrary to the most recognizable adsorption studies using chitin, this is the first study using unique nanoparticles of ⩽50 nm used for the dye adsorption process. The results showed that the adsorption process increased with increase in the concentration of CNP, contact time and temperature with the dyestuff, whereas the adsorption process decreased with increase in the initial dye concentration and strong acidic pH. The results from Fourier transform infrared (FTIR spectroscopy confirmed that the interaction between dyestuff and CNP involved physical adsorption. The adsorption process obeys Langmuir isotherm (R2 values were 0.992, 0.999 and 0.992 for MB, BPB and CBB, and RL value lies between 0 and 1 for all the three dyes and pseudo second order kinetics (R2 values were 0.996, 0.999 and 0.996 for MB, BPB and CBB more effectively. The isotherm and kinetic models confirmed that CNP can be used as a suitable adsorbent material for the removal of dyestuff from effluents.

  15. Chronic ethanol exposure increases voluntary home cage intake in adult male, but not female, Long-Evans rats

    Science.gov (United States)

    Morales, Melissa; McGinnis, Molly M.; McCool, Brian A.

    2016-01-01

    The current experiment examined the effects of 10 days of chronic intermittent ethanol (CIE) exposure on anxiety-like behavior and home cage ethanol intake using a 20% intermittent access (M, W, F) paradigm in male and female Long-Evans rats. Withdrawal from alcohol dependence contributes to relapse in humans and increases in anxiety-like behavior and voluntary ethanol consumption in preclinical models. Our laboratory has shown that 10 days of CIE exposure produces both behavioral and neurophysiological alterations associated with withdrawal in male rats; however, we have yet to examine the effects of this exposure regime on ethanol intake in females. During baseline, females consumed more ethanol than males but, unlike males, did not show escalations in intake. Rats were then exposed to CIE and were again given intermittent access to 20% ethanol. CIE males increased their intake compared to baseline, whereas air-exposed males did not. Ethanol intake in females was unaffected by CIE exposure. Notably, both sexes expressed significantly elevated withdrawal-associated anxiety-like behavior in the plus maze. Finally, rats were injected with the cannabinoid CB1 receptor antagonist, SR141716A (0, 1, 3, 10 mg/kg, i.p.) which reduced ethanol intake in both sexes. However, females appear to be more sensitive to lower doses of this CB1 receptor antagonist. Our results show that females consume more ethanol than males; however, they did not escalate their intake using the intermittent access paradigm. Unlike males, CIE exposure had no effect on drinking in females. It is possible that females may be less sensitive than males to ethanol-induced increases in drinking after a short CIE exposure. Lastly, our results demonstrate that males and females may have different pharmacological sensitivities to CB1 receptor blockade on ethanol intake, at least under the current conditions. PMID:26515190

  16. Clozapine N-Oxide Administration Produces Behavioral Effects in Long-Evans Rats: Implications for Designing DREADD Experiments.

    Science.gov (United States)

    MacLaren, Duncan A A; Browne, Richard W; Shaw, Jessica K; Krishnan Radhakrishnan, Sandhya; Khare, Prachi; España, Rodrigo A; Clark, Stewart D

    2016-01-01

    Clozapine N-oxide (CNO) is a ligand for a powerful chemogenetic system that can selectively inhibit or activate neurons; the so-called Designer Receptors Exclusively Activated by Designer Drugs (DREADD) system. This system consists of synthetic G-protein-coupled receptors, which are not believed to be activated by any endogenous ligand, but are activated by the otherwise inert CNO. However, it has previously been shown that the administration of CNO in humans and rats leads to detectable levels of the bioactive compounds clozapine and N-desmethylclozapine (N-Des). As a follow-up, experiments were conducted to investigate the effects of CNO in male Long-Evans rats. It was found that 1 mg/kg CNO reduced the acoustic startle reflex but had no effect on prepulse inhibition (PPI; a measure of sensorimotor gating). CNO (2 and 5 mg/kg) had no effect on the disruption to PPI induced by the NMDA antagonist phencyclidine or the muscarinic antagonist scopolamine. In locomotor studies, CNO alone (at 1, 2, and 5 mg/kg) had no effect on spontaneous locomotion, but 5 mg/kg CNO pretreatment significantly attenuated d-amphetamine-induced hyperlocomotion. In line with the behavioral results, fast-scan cyclic voltammetry found that 5 mg/kg CNO significantly attenuated the d-amphetamine-induced increase in evoked dopamine. However, the effects seen after CNO administration cannot be definitively ascribed to CNO because biologically relevant levels of clozapine and N-Des were found in plasma after CNO injection. Our results show that CNO has multiple dose-dependent effects in vivo and is converted to clozapine and N-Des emphasizing the need for a CNO-only DREADD-free control group when designing DREADD-based experiments.

  17. Stress facilitates late reversal learning using a touchscreen-based visual discrimination procedure in male Long Evans rats.

    Science.gov (United States)

    Bryce, Courtney A; Howland, John G

    2015-02-01

    The stress response is essential to the survival of all species as it maintains internal equilibrium and allows organisms to respond to threats in the environment. Most stress research has focused on the detrimental impacts of stress on cognition and behavior. Reversal learning, which requires a change in response strategy based on one dimension of the stimuli, is one type of behavioral flexibility that is facilitated following some brief stress procedures. The current study investigated a potential mechanism underlying this facilitation by blocking glucocorticoid receptors (GRs) during stress. Thirty-seven male Long Evans rats learned to discriminate between two images on a touchscreen, one of which was rewarded. Once a criterion was reached, rats received stress (30 min of restraint stress or no stress) and drug (GR antagonist RU38486 or vehicle) administration prior to each of the first 3 days of reversal learning. We expected that stress would facilitate reversal learning and RU38486 (10 mg/kg) would prevent this facilitation in both early (50% correct in one session) stages of reversal learning. Results showed that stressed rats performed better than unstressed rats (fewer days for late reversal, fewer correction trials, and fewer errors) in the late but not early stage of reversal learning. RU38486 did not block the facilitation of RL by stress, although it dramatically increased response, but not reward, latencies. These results confirm the facilitation of late reversal by stress in a touchscreen-based operant task in rats and further our understanding of how stress affects higher level cognitive functioning and behavior. Copyright © 2014 Elsevier B.V. All rights reserved.

  18. Coffee consumption delays the hepatitis and suppresses the inflammation related gene expression in the Long-Evans Cinnamon rat.

    Science.gov (United States)

    Katayama, Masafumi; Donai, Kenichiro; Sakakibara, Hiroyuki; Ohtomo, Yukiko; Miyagawa, Makoto; Kuroda, Kengo; Kodama, Hiroko; Suzuki, Kazufumi; Kasai, Noriyuki; Nishimori, Katsuhiko; Uchida, Takafumi; Watanabe, Kouichi; Aso, Hisashi; Isogai, Emiko; Sone, Hideko; Fukuda, Tomokazu

    2014-04-01

    Large-scale epidemiological studies have shown that drinking more than two cups of coffee per day reduces the risks of hepatitis and liver cancer. However, the heterogeneity of the human genome requires studies of experimental animal models with defined genetic backgrounds to evaluate the coffee effects on liver diseases. We evaluated the efficacy of coffee consumption with one of experimental animal models for human disease. We used the Long Evans Cinnamon (LEC) rat, which onsets severe hepatitis and high incidence of liver cancer, due to the accumulation of copper and iron in livers caused by the genetic mutation in Atp7B gene, and leading to the continuous oxidative stress. We determined the expression of inflammation related genes, and amounts of copper and iron in livers, and incidence of the pre-neoplastic foci in the liver tissue of LEC rats. Coffee administration for 25 weeks delayed the occurrence of hepatitis by two weeks, significantly improved survival, reduced the expression of inflammatory cytokines, and reduced the incidence of small pre-neoplastic liver foci in LEC rats. There was no significant difference in the accumulation of copper and iron in livers, indicating that coffee administration does not affect to the metabolism of these metals. These findings indicate that drinking coffee potentially prevents hepatitis and liver carcinogenesis through its anti-inflammatory effects. This study showed the efficacy of coffee in the prevention of hepatitis and liver carcinogenesis in the LEC model. Copyright © 2013 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.

  19. Behavioral Phenotyping of Juvenile Long-Evans and Sprague-Dawley Rats: Implications for Preclinical Models of Autism Spectrum Disorders.

    Directory of Open Access Journals (Sweden)

    Katherine M Ku

    Full Text Available The laboratory rat is emerging as an attractive preclinical animal model of autism spectrum disorder (ASD, allowing investigators to explore genetic, environmental and pharmacological manipulations in a species exhibiting complex, reciprocal social behavior. The present study was carried out to compare two commonly used strains of laboratory rats, Sprague-Dawley (SD and Long-Evans (LE, between the ages of postnatal day (PND 26-56 using high-throughput behavioral phenotyping tools commonly used in mouse models of ASD that we have adapted for use in rats. We detected few differences between young SD and LE strains on standard assays of exploration, sensorimotor gating, anxiety, repetitive behaviors, and learning. Both SD and LE strains also demonstrated sociability in the 3-chamber social approach test as indexed by spending more time in the social chamber with a constrained age/strain/sex matched novel partner than in an identical chamber without a partner. Pronounced differences between the two strains were, however, detected when the rats were allowed to freely interact with a novel partner in the social dyad paradigm. The SD rats in this particular testing paradigm engaged in play more frequently and for longer durations than the LE rats at both juvenile and young adult developmental time points. Results from this study that are particularly relevant for developing preclinical ASD models in rats are threefold: (i commonly utilized strains exhibit unique patterns of social interactions, including strain-specific play behaviors, (ii the testing environment may profoundly influence the expression of strain-specific social behavior and (iii simple, automated measures of sociability may not capture the complexities of rat social interactions.

  20. Cessation of daily exercise dramatically alters precursors of hepatic steatosis in Otsuka Long-Evans Tokushima Fatty (OLETF) rats.

    Science.gov (United States)

    Rector, R Scott; Thyfault, John P; Laye, Matthew J; Morris, R Tyler; Borengasser, Sarah J; Uptergrove, Grace M; Chakravarthy, Manu V; Booth, Frank W; Ibdah, Jamal A

    2008-09-01

    The purpose of this study was to delineate potential mechanisms initiating the onset of hepatic steatosis following the cessation of daily physical activity. Four-week-old, hyperphagic/obese Otsuka Long-Evans Tokushima Fatty rats were given access to voluntary running wheels for 16 weeks to prevent the development of hepatic steatosis. The animals were then suddenly transitioned to a sedentary condition as wheels were locked (wheel lock; WL) for 5 h (WL5), 53 h (WL53) or 173 h (WL173). Importantly after the cessation of daily exercise (5-173 h), no changes occurred in body weight, fat pad mass (omental and retroperitoneal), food intake, serum insulin, hepatic triglycerides or in the exercise-suppressed hepatic stearoyl-CoA desaturase-1 and peroxisome proliferator-activated receptor-gamma protein content. However, complete hepatic fatty acid oxidation and mitochondrial enzyme activities were highest at WL5 and WL53 and dropped significantly to SED levels by WL173. In addition, cessation of daily exercise quickly increased the hepatic protein contents of fatty acid synthase and acetyl-coenzyme A carboxylase (ACC), reduced ACC phosphorylation status, and dramatically increased hepatic malonyl-CoA concentration. This study is the first to show that the sudden cessation of daily exercise in a hyperphagic/obese model activates a subgroup of precursors and processes known to initiate hepatic steatosis, including decreased hepatic mitochondrial oxidative capacity, increased hepatic expression of de novo lipogenesis proteins, and increased hepatic malonyl CoA levels; each probably increasing the susceptibility to non-alcoholic fatty liver disease.

  1. Sex differences in alcohol self-administration and relapse-like behavior in Long-Evans rats.

    Science.gov (United States)

    Randall, Patrick A; Stewart, Robert T; Besheer, Joyce

    2017-05-01

    Alcohol use disorders are a costly public health dilemma. Complicating this issue is the general lack of basic research assessing sex differences in many aspects of alcohol seeking and taking behaviors. The current experiments sought to decrease this gap in our understanding of sex differences in alcohol use disorders by assessing both male and female Long-Evans rats in parallel on alcohol self-administration, relapse-like behavior following abstinence and extinction, and motivation to respond for the standard alcohol solution and a quinine-adulterated alcohol solution. Here, we show that while males tend to have greater alcohol-reinforced responses throughout self-administration training, females show similar or greater alcohol intake (g/kg). Additionally, when tested for reinstatement of alcohol seeking and self-administration, following abstinence or extinction, males consistently showed greater reinstatement responding than females, which may be related to their training history. However, when assessed using the progressive ratio, there were no sex differences in motivation to respond for alcohol. Further, the consistent patterns of responding across months of self-administration training in both males and females, lend support for the feasibility of conducting these studies in male and female rats in parallel without concerns about daily variability. Our data also suggest that males and females should not be pooled as differences in alcohol lever responses and differences in reinstatement, as observed in the current experiments, could affect the overall outcome and possibly confound data interpretation. These studies demonstrate the importance of assessing males and females in parallel and advance the body of preclinical research on sex differences in alcohol self-administration and relapse. Copyright © 2017 Elsevier Inc. All rights reserved.

  2. Evaluation of Code Blue Implementation Outcomes

    Directory of Open Access Journals (Sweden)

    Bengü Özütürk

    2015-09-01

    Full Text Available Aim: In this study, we aimed to emphasize the importance of Code Blue implementation and to determine deficiencies in this regard. Methods: After obtaining the ethics committee approval, 225 patient’s code blue call data between 2012 and 2014 January were retrospectively analyzed. Age and gender of the patients, date and time of the call and the clinics giving Code Blue, the time needed for the Code Blue team to arrive, the rates of false Code Blue calls, reasons for Code Blue calls and patient outcomes were investigated. Results: A total of 225 patients (149 male, 76 female were evaluated in the study. The mean age of the patients was 54.1 years. 142 (67.2% Code Blue calls occurred after hours and by emergency unit. The mean time for the Code Blue team to arrive was 1.10 minutes. Spontaneous circulation was provided in 137 patients (60.8%; 88 (39.1% died. The most commonly identified possible causes were of cardiac origin. Conclusion: This study showed that Code Blue implementation with a professional team within an efficient and targeted time increase the survival rate. Therefore, we conclude that the application of Code Blue carried out by a trained team is an essential standard in hospitals. (The Medical Bulletin of Haseki 2015; 53:204-8

  3. Fire Whirls, Vortex Breakdown(?), and Blue Whirls

    Science.gov (United States)

    Oran, Elaine; Xiao, Huahua; Gollner, Michael

    2016-11-01

    As we were investigating the efficiency of fire-whirl burning on water, we observed the usual transformation of a pool fire to a fire whirl, and then suddenly, we saw the fire undergo a third transition. A blue cup appeared around the base of the fire whirl, surrounding the yellow flame, the yellow flame receded into the cup and finally disappeared. What remained was a small, rapidly spinning blue flame that burned until the fuel on the water was consumed. The blue whirl was shaped like a spinning cup, closed at the bottom near the water surface, and spreading in radius moving upwards towards the rim. Above the blue cup lip, there was a purple cone-shaped mist. The fuel was usually n-heptane, but at one point it was crude oil, and still the blue whirl formed naturally. The height of the fire whirl on the laboratory pan was larger than a half meter, and this evolved into a blue whirl about 4-8 cm high. Occasionally the blue whirl would become "unstable" and revert to a transitional state of blue cup holding a yellow flame. When the blue whirl formed, turbulence seemed to disappear, and the flame became quiet. We will show videos of how this happened and discuss the evolution of the fire whirl to the blue whirl in vortex-breakdown concepts. This work was supported by and EAGER award from NSF and Minta Martin Endowment Funds in the Department of Aerospace Engineering at the University of Maryland.

  4. Liquid biofuels from blue biomass

    DEFF Research Database (Denmark)

    Kádár, Zsófia; Jensen, Annette Eva; Bangsø Nielsen, Henrik

    2011-01-01

    Marine (blue) biomasses, such as macroalgaes, represent a huge unexploited amount of biomass. With their various chemical compositions, macroalgaes can be a potential substrate for food, feed, biomaterials, pharmaceuticals, health care products and also for bioenergy. Algae use seawater as a growth...... medium, light as energy source and they capture CO2 for the synthesis of new organic material, thus can grow on non-agricultural land, without increasing food prices, or using fresh water. Due to all these advantages in addition to very high biomass yield with high carbohydrate content, macroalgaes can...

  5. Melanoma and Satellite Blue Papule

    OpenAIRE

    Oliveira, A.; Arzberger, E; Massone, C.; Zalaudek, I.; Fink-Puches, R; Hofmann-Wellenhof, R

    2014-01-01

    The colors that are seen in dermoscopy depend on the anatomic level of the skin at which the chromophores are seen. Blue color can be found in a variety of melanocytic and nonmelanocytic lesions. An 89-year-old man presented with a 3-year history of a slow-growing, hyperpigmented patch located on the distal third of the right arm. Dermoscopy showed an atypical network, irregularly distributed globules, pigmented internal streaks and a milky-red area. Based on these findings a diagnosis of slo...

  6. Blue breath holding is benign.

    Science.gov (United States)

    Stephenson, J B

    1991-01-01

    In their recent publication in this journal, Southall et al described typical cyanotic breath holding spells, both in otherwise healthy children and in those with brainstem lesions and other malformations. Their suggestions regarding possible autonomic disturbances may require further study, but they have adduced no scientific evidence to contradict the accepted view that in the intact child blue breath holding spells are benign. Those families in which an infant suffers an 'apparently life threatening event' deserve immense understanding and help, and it behoves investigators to exercise extreme care and self criticism in the presentation of new knowledge which may bear upon their management and their morale. PMID:2001115

  7. Electronic properties of blue phosphorene/graphene and blue phosphorene/graphene-like gallium nitride heterostructures.

    Science.gov (United States)

    Sun, Minglei; Chou, Jyh-Pin; Yu, Jin; Tang, Wencheng

    2017-07-05

    Blue phosphorene (BlueP) is a graphene-like phosphorus nanosheet which was synthesized very recently for the first time [Nano Lett., 2016, 16, 4903-4908]. The combination of electronic properties of two different two-dimensional materials in an ultrathin van der Waals (vdW) vertical heterostructure has been proved to be an effective approach to the design of novel electronic and optoelectronic devices. Therefore, we used density functional theory to investigate the structural and electronic properties of two BlueP-based heterostructures - BlueP/graphene (BlueP/G) and BlueP/graphene-like gallium nitride (BlueP/g-GaN). Our results showed that the semiconducting nature of BlueP and the Dirac cone of G are well preserved in the BlueP/G vdW heterostructure. Moreover, by applying a perpendicular electric field, it is possible to tune the position of the Dirac cone of G with respect to the band edge of BlueP, resulting in the ability to control the Schottky barrier height. For the BlueP/g-GaN vdW heterostructure, BlueP forms an interface with g-GaN with a type-II band alignment, which is a promising feature for unipolar electronic device applications. Furthermore, we discovered that both G and g-GaN can be used as an active layer for BlueP to facilitate charge injection and enhance the device performance.

  8. Geothermal Technologies Program Blue Ribbon Panel Recommendations

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2011-06-17

    The Geothermal Technologies Program assembled a geothermal Blue Ribbon Panel on March 22-23, 2011 in Albuquerque, New Mexico for a guided discussion on the future of geothermal energy in the United States and the role of the DOE Program. The Geothermal Blue Ribbon Panel Report captures the discussions and recommendations of the experts. An addendum is available here: http://www.eere.energy.gov/geothermal/pdfs/gtp_blue_ribbon_panel_report_addendum10-2011.pdf

  9. Photodynamic therapy with Methylene Blue as photosensitizer

    Energy Technology Data Exchange (ETDEWEB)

    Nishisaka, Tsuyoshi (Tokyo Univ. of Agriculture and Technology, Fuchu, Tokyo (Japan). Health Science Center); Ennyu, Hiroko; Takeno, Tetsu; Okura, Ichiro

    1993-07-01

    Availability of Methylene Blue as a photosensitizer in photodynamic therapy was investigated, and it was found that the HeLa cells incorporated with Methylene Blue was strongly damaged by the irradiation with laser light. Methylene Blue was effective for the irradiation of longer wavelength, which has the large tissue penetration depth. The possible reaction mechanism of the cell damage via photo-produced singlet oxygen is discussed. (author).

  10. Strain-dependent effects of acute caffeine on anxiety-related behavior in PVG/c, Long-Evans and Wistar rats.

    Science.gov (United States)

    Hughes, Robert N; Hancock, Nicola J

    2016-01-01

    To assess the possibility that acute caffeine's behavioral action might depend on rats' strain, effects of 50mg/kg of the drug were observed on activity, anxiety-related behavior and habituation learning in male and female rats from three different strains, namely PVG/c, Long-Evans and Wistar. All subjects were tested in an open field, an elevated plus maze and a light-dark box. For the three strains combined, increased occupancy of the center of the open field and entries of the open plus-maze arms with caffeine suggested caffeine-induced anxiolysis, whereas increased grooming in the open field, decreased rearing in the plus maze and increased risk assessment in the light-dark box were consistent with anxiogenesis. Caffeine also reduced open-field rearing only for PVG/c rats, and entries into and occupation of the light side of the light-dark box only for Long-Evans rats, and increased total defecation in the three types of apparatus for all three strains combined. Overall, caffeine appeared to be mainly anxiogenic. The drug also increased open-field ambulation for PVG/c rats and walking for all rats, but decreased open-field ambulation and entries into the plus maze closed arms for Wistar rats alone. In general, Wistar rats appeared to be the least and Long-Evans the most anxious of the three strains investigated. Caffeine also decreased within-session habituation of open-field ambulation for PVG/c rats alone, thereby suggesting strain-dependent interference with non-associative learning and short-term memory. Several overall sex differences were also observed that supported female rats being more active and less anxious than males. Copyright © 2015 Elsevier Inc. All rights reserved.

  11. Ocorrência simultânea de síndrome de Evans e anemia falciforme em uma criança de 2 anos

    OpenAIRE

    Brito,Adriana Alexandre; Leite,Luiz Arthur Calheiros; Martin,Rúbia Maysa; Ramos,Fernando Wagner da Silva; Reis,Simone Medeiros Beder

    2012-01-01

    A associação entre anemia falciforme (AF) e síndrome de Evans (SE) parece ser rara. Esse estudo objetivou relatar o caso de uma criança com AF e SE. A paciente R. M. S. S., 2 anos de idade, foi admitida em um centro hematológico apresentando hemorragia de mucosa, leucometria 20,3 × 10(9)/l, hemoglobina 4,6 g/dl e plaquetas 28 × 10(9)/l. Posteriormente, realizou-se mielograma, que evidenciou hipercelularidade eritroide, sugerindo hemólise. Teste positivo da antiglobulina direcionou o diagnósti...

  12. Methylthymol blue in Fricke gels

    Science.gov (United States)

    Penev, K. I.; Mequanint, K.

    2015-01-01

    The initial trial of methylthymol blue (MTB) as a chelator for ferric iron in Fricke gel dosimeters, used for three-dimensional (3D) dosimetry in cancer radiotherapy, is reported. MTB is a structural analogue of the conventionally used xylenol orange (XO); however, the absorbance spectrum of the ferric-MTB complex is shifted to higher wavelengths, which should allow for lower amount of light scattering during gel scanning. In this study, two gelatin substrates, two sources of XO and one source of MTB have been compared. The MTB- containing gels exhibited similar dose response and diffusion coefficient to the XO-containing gels at their wavelengths of maximum absorption (620 and 585 nm, respectively). In addition, the MTB gels gave an excellent dose response at 633 nm, which is an important wavelength that is already used with other 3D dosimeters.

  13. Blue code: Is it a real emergency?

    Science.gov (United States)

    Eroglu, Serkan E; Onur, Ozge; Urgan, Oğuz; Denizbasi, Arzu; Akoglu, Haldun

    2014-01-01

    Cardiac arrests in hospital areas are common, and hospitals have rapid response teams or "blue code teams" to reduce preventable in-hospital deaths. Education about the rapid response team has been provided in all hospitals in Turkey, but true "blue code" activation is rare, and it is abused by medical personnel in practice. This study aimed to determine the cases of wrong blue codes and reasons of misuse. This retrospective study analyzed the blue code reports issued by our hospital between January 1 and June 1 2012. A total of 89 "blue code" activations were recorded in 5 months. A "blue code" was defined as any patient with an unexpected cardiac or respiratory arrest requiring resuscitation and activation of a hospital alert. Adherence to this definition, each physician classified their collected activation forms as either a true or a wrong code. Then, patient data entered a database (Microsoft Excel 2007 software) which was pooled for analysis. The data were analyzed by using frequencies and the Chi-square test on SPSSv16.0. The patients were diagnosed with cardiopulmonary arrest (8), change in mental status (18), presyncope (11), chest pain (12), conversive disorder (18), and worry of the staff for the patient (22). Code activation was done by physicians in 76% of the patients; the most common reason for blue code was concern of staff for the patient. The findings of this study show that more research is needed to establish the overall effectiveness and optimal implementation of blue code teams.

  14. Instituting code blue drills in the OR.

    Science.gov (United States)

    Lanfranchi, Joy A

    2013-04-01

    A code blue in the OR is a low-volume, high-risk event. To be effective during a code blue event, perioperative personnel must be able to properly execute a response plan and perform seldom-used skills and procedures. I developed and implemented a code blue drill educational experience for OR staff members that included a review of code blue policy, how to use a defibrillator, and simulated code blue scenarios. In addition, I worked with educational facilitators to provide an assessment of the personnel who performed the simulated code blue drills to identify key learning opportunities, such as gaps in communication, poor performance of cardiopulmonary resuscitation, ineffective delegation skills, and lack of assertiveness. One month after the educational experience, all team members passed an observed competency for responding to a code blue in a simulation laboratory. These results show the effectiveness of the educational experience as part of the code blue drills program in the hospital's main OR. Copyright © 2013 AORN, Inc. Published by Elsevier Inc. All rights reserved.

  15. Blue Skies, Coffee Creamer, and Rayleigh Scattering

    Science.gov (United States)

    Liebl, Michael

    2010-01-01

    The first physical explanation of Earths blue sky was fashioned in 1871 by Lord Rayleigh. Many discussions of Rayleigh scattering and approaches to studying it both in and out of the classroom are available. Rayleigh scattering accounts for the blue color of the sky and the orange/red color of the Sun near sunset and sunrise, and a number of…

  16. Blue jay attacks and consumes cedar waxwing

    Science.gov (United States)

    Daniel Saenz; Joshua B. Pierce

    2009-01-01

    Blue Jays (Cyanocitta cristata) are known to be common predators on bird nests (Wilcove 1985, Picman and Schriml 1994). In addition to predation on eggs and nestlings, Blue Jays occasionally prey on fledgling and adult birds (Johnson and Johnson 1976, Dubowy 1985). A majority of reports involve predation on House Sparrows (Passer domesticus) and other small birds (...

  17. Blue enhanced light sources: opportunities and risks

    Science.gov (United States)

    Lang, Dieter

    2012-03-01

    Natural daylight is characterized by high proportions of blue light. By proof of a third type of photoreceptor in the human eye which is only sensitive in this spectral region and by subsequent studies it has become obvious that these blue proportions are essential for human health and well being. In various studies beneficial effects of indoor lighting with higher blue spectral proportions have been proven. On the other hand with increasing use of light sources having enhanced blue light for indoor illumination questions are arising about potential health risks attributed to blue light. Especially LED are showing distinct emission characteristics in the blue. Recently the French agency for food, environmental and occupational health & safety ANSES have raised the question on health issues related to LED light sources and have claimed to avoid use of LED for lighting in schools. In this paper parameters which are relevant for potential health risks will be shown and their contribution to risk factors will quantitatively be discussed. It will be shown how to differentiate between photometric parameters for assessment of beneficial as well as hazardous effects. Guidelines will be discussed how blue enhanced light sources can be used in applications to optimally support human health and well being and simultaneously avoid any risks attributed to blue light by a proper design of lighting parameters. In the conclusion it will be shown that no inherent health risks are related to LED lighting with a proper lighting design.

  18. Effects of acupuncture stimulation on blood glucose concentration in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat, an animal model for type-2 diabetes mellitus.

    Science.gov (United States)

    Nakamura, Hironori; Ishigami, Tatsuyo; Kawase, Yoshiyuki; Yamada, Atsushi; Minagawa, Munenori; Fukuta, Hiroyasu; Kurono, Yasuzo; Suzuki, Hikaru

    2014-05-19

    Effects of acupuncture stimulation on blood glucose concentration and body weight were investigated in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat, a model for type-2 diabetes. Three groups of rats were used: OLETF, acupuncture-treated OLETF (AcOLETF), and Long-Evans Tokushima Otsuka (LETO) rats (as control for the OLETF rats). In AcOLETF rats, acupuncture stimulation was applied twice a week to 6 points (zhongwan, tianshu, qihai, ganshu, pishu, shenshu) and changes in blood glucose concentration and body weight were measured. Initially, at 6 weeks old, there was no significant difference in blood glucose levels between groups. Blood glucose levels increased with age in each group, reaching a maximum of about 430 mg/dl at 37 weeks in OLETF rats. In AcOLETF rats, blood glucose levels increased at a slower rate than in OLETF rats, reaching a maximum concentration of about 280 mg/dl at 37 weeks of age, significantly lower than that in OLETF rats. The concentration of blood glucose in LETO rats had stabilized at a maximum value of 120~140 mg/dl by 16 weeks, remaining at this level for up to 39 weeks. In each group, body weight increased with age and was not affected by acupuncture treatment. In OLETF rats, acupuncture treatment significantly reduced blood glucose levels, but not their body weight, suggesting that acupuncture therapy was effective in preventing the development of type-2 diabetes mellitus.

  19. Tapered photonic crystal fibers for blue-enhanced supercontinuum generation

    DEFF Research Database (Denmark)

    Møller, Uffe; Sørensen, Simon Toft; Larsen, Casper

    2012-01-01

    Tapering of photonic crystal fibers is an effective way of shifting the blue edge of a supercontinuum spectrum down in the deep-blue. We discuss the optimum taper profile for enhancing the power in the blue edge.......Tapering of photonic crystal fibers is an effective way of shifting the blue edge of a supercontinuum spectrum down in the deep-blue. We discuss the optimum taper profile for enhancing the power in the blue edge....

  20. Can greening of aquaculture sequester blue carbon?

    Science.gov (United States)

    Ahmed, Nesar; Bunting, Stuart W; Glaser, Marion; Flaherty, Mark S; Diana, James S

    2017-05-01

    Globally, blue carbon (i.e., carbon in coastal and marine ecosystems) emissions have been seriously augmented due to the devastating effects of anthropogenic pressures on coastal ecosystems including mangrove swamps, salt marshes, and seagrass meadows. The greening of aquaculture, however, including an ecosystem approach to Integrated Aquaculture-Agriculture (IAA) and Integrated Multi-Trophic Aquaculture (IMTA) could play a significant role in reversing this trend, enhancing coastal ecosystems, and sequestering blue carbon. Ponds within IAA farming systems sequester more carbon per unit area than conventional fish ponds, natural lakes, and inland seas. The translocation of shrimp culture from mangrove swamps to offshore IMTA could reduce mangrove loss, reverse blue carbon emissions, and in turn increase storage of blue carbon through restoration of mangroves. Moreover, offshore IMTA may create a barrier to trawl fishing which in turn could help restore seagrasses and further enhance blue carbon sequestration. Seaweed and shellfish culture within IMTA could also help to sequester more blue carbon. The greening of aquaculture could face several challenges that need to be addressed in order to realize substantial benefits from enhanced blue carbon sequestration and eventually contribute to global climate change mitigation.

  1. Skin discoloration with blue food coloring.

    Science.gov (United States)

    Zillich, A J; Kuhn, R J; Petersen, T J

    2000-01-01

    To describe a pediatric patient who developed a clinical cyanotic appearance after receiving an excessive amount of blue food coloring. An 11-year-old white girl with cerebral palsy was admitted for unresolving aspiration pneumonia and dehydration. Antibiotics and intravenous fluids were administered. During the hospital course, enteral nutrition containing blue food coloring was also administered. Twelve hours after the start of enteral nutrition, the patient appeared cyanotic despite a regular respiratory rate and normal oxygen saturation. The pediatric code response team was called. Enteral nutrition was stopped and then restarted without blue food coloring. Over the next 24 hours, the cyanotic appearance resolved and no further complications developed. At our institution, blue food coloring is used with enteral nutrition for detecting aspiration of stomach contents. The dietary department supplies food coloring to each nursing unit in pint-sized medicine bottles. Nurses place an unstandardized amount of blue food coloring into each enteral nutrition bag. This child received an unspecified amount of FD&C Blue No. 1 food coloring. No toxicity studies exist for acute or human ingestion, but the National Academy of Sciences lists 363 mg/d of FD&C Blue No. 1 as a safe level for humans. We estimated this child ingested 780-3,940 mg of dye over a 12-hour period. This is the first known report of an adverse effect from blue food coloring. To prevent similar occurrences within our institution, the blue food coloring for tube feedings will be dispensed by the pharmacy department in standardized units.

  2. Brilliant blue in vitreoretinal surgery.

    Science.gov (United States)

    Enaida, Hiroshi; Ishibashi, Tatsuro

    2008-01-01

    This paper reviews the preclinical effects of brilliant blue G (BBG) on the morphology and functions of the retina, and reports on a pilot study of BBG staining and subsequent peeling of the internal limiting membrane (ILM) during vitreoretinal surgery. BBG solution was injected into rat eyes and investigated using light microscopy and electron microscopy, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining, and electroretinography (ERG). No pathological changes were caused by the BBG intravitreous injection. Although electron microscopy revealed that high doses of BBG induced vacuolization in the inner retinal cells, there was no reduction in the amplitude of the ERG waves and no detectable toxic effects. In the primate eyes, the ILM was clearly visualized by BBG staining, and peeled off easily from the retina. In the clinical study, BBG improved visualization of the ILM, allowing peeling and surgery to be performed successfully on patients with various vitroretinal diseases. Improvement of postoperative visual acuity was obtained in most cases, and no adverse effects were observed postoperatively. In conclusion, BBG has low toxicity, high staining ability, and is easy to handle, making it a good candidate dye for visualizing vitreoretinal disease surgery without adverse effects.

  3. Triboelectric Nanogenerators for Blue Energy Harvesting.

    Science.gov (United States)

    Khan, Usman; Kim, Sang-Woo

    2016-07-26

    Blue energy in the form of ocean waves offers an enormous energy resource. However, it has yet to be fully exploited in order to make it available for the use of mankind. Blue energy harvesting is a challenging task as the kinetic energy from ocean waves is irregular in amplitude and is at low frequencies. Though electromagnetic generators (EMGs) are well-known for harvesting mechanical kinetic energies, they have a crucial limitation for blue energy conversion. Indeed, the output voltage of EMGs can be impractically low at the low frequencies of ocean waves. In contrast, triboelectric nanogenerators (TENGs) are highly suitable for blue energy harvesting as they can effectively harvest mechanical energies from low frequencies (energy harvesting. In this Perspective, we describe some of the recent progress and also address concerns related to durable packaging of TENGs in consideration of harsh marine environments and power management for an efficient power transfer and distribution for commercial applications.

  4. Phototherapy with turquoise versus blue light

    OpenAIRE

    Ebbesen, F; Agati, G; Pratesi, R

    2003-01-01

    Preterm jaundiced infants were treated by phototherapy with a new turquoise fluorescent lamp. This was more effective in reducing plasma total bilirubin in relation to light irradiance than the ubiquitously used blue fluorescent lamp.

  5. Reciproc blue: the new generation of reciprocation

    Directory of Open Access Journals (Sweden)

    Ghassan Yared

    2017-11-01

    Conclusions: This article introduces and describes the clinical technique with which the Reciproc® blue instrument is used, even without the need to create a glide path with manual files before using the mechanical instrument.

  6. FROM CIRCULAR ECONOMY TO BLUE ECONOMY

    National Research Council Canada - National Science Library

    Iustin-Emanuel, ALEXANDRU; Alexandru, TASNADI

    2014-01-01

    .... Starting from the principles of Ecolonomy, which is based on the whole living paradigm, this paper argues for the development within each economy of entrepreneurial policies related to the Blue economy...

  7. The Biology of blue-green algae

    National Research Council Canada - National Science Library

    Carr, Nicholas G; Whitton, B. A

    1973-01-01

    .... Their important environmental roles, their part in nitrogen fixation and the biochemistry of phototrophic metabolism are some of the attractions of blue-geen algae to an increasing number of biologists...

  8. Blue-light reception through quaternary transitions

    National Research Council Canada - National Science Library

    Christopher Engelhard; Ralph P Diensthuber; Andreas Möglich; Robert Bittl

    2017-01-01

    .... Using electron-electron double resonance (ELDOR) spectroscopy and site-directed spin labelling, we chart the structural transitions facilitating blue-light reception in the engineered light-oxygen-voltage (LOV...

  9. Substantial Research Secures the Blue Future for our Blue Plant

    Directory of Open Access Journals (Sweden)

    Moustafa Abdel Maksoud

    2016-06-01

    Full Text Available Earth, the blue planet, is our home, and seas and oceans cover more than 70% of its surface. As the earth’s population rapidly increases and available resources decrease, seas and oceans can play a key role in assuring the long-term survival of humankind. Renewable maritime energy has huge potential to provide a considerable part of the earth’s population with decarbonised electricity generation systems. Renewable maritime energy is very flexible and can be harvested above the water’s free surface by using offshore wind turbines, on the water’s surface by using wave energy converters or below the water’s surface by using current or tidal turbines. The supposed conflict between environmental protection measures and economic interests is neither viable nor reasonable. Renewable maritime energy can be the motor for considerable substantial economic growth for many maritime regions and therefore for society at large. The fastest growing sector of renewable maritime energy is offshore wind. The annual report of the European Wind Energy Association from the year 2015 confirms the growing relevance of the offshore wind industry. In 2015, the total installed and grid-connected capacity of wind power was 12,800 MW in the EU and 6,013.4 MW in Germany. 38% of the 2015 annual installation in Germany was offshore, accounting for a capacity of 2,282.4 MW. However, there are a limited number of available installation sites in shallow water, meaning that there is an urgent need to develop new offshore structures for water depths greater than 50m. The persistent trend towards deeper waters has encouraged the offshore wind industry to look for floating wind turbine structures and larger turbines. Floating wind turbine technologies are at an early stage of development and many technical and economic challenges will still need to be faced. Nonetheless, intensive research activities and the employment of advanced technologies are the key factors in

  10. Blue Whales Respond to Anthropogenic Noise

    OpenAIRE

    Melcón, Mariana L.; Amanda J Cummins; Kerosky, Sara M.; Roche, Lauren K.; Wiggins, Sean M.; Hildebrand, John A.

    2012-01-01

    Anthropogenic noise may significantly impact exposed marine mammals. This work studied the vocalization response of endangered blue whales to anthropogenic noise sources in the mid-frequency range using passive acoustic monitoring in the Southern California Bight. Blue whales were less likely to produce calls when mid-frequency active sonar was present. This reduction was more pronounced when the sonar source was closer to the animal, at higher sound levels. The animals were equally likely to...

  11. [The blue jars of Llivia's dispensary].

    Science.gov (United States)

    Tamarelle, Charles

    2007-01-01

    The Town Museum of Llivia, Spanish enclave in Eastern Pyrenees, displays a XVIIIth century dispensary transmitted by a lineage of pharmacists. Decorated plant boxes, Catalonian albarellos (jars) and original items: a reredos shaped toxic cabinet and typical blue albarellos can be seen there. The shape, type and inscriptions of these blue jars are considered through hypothesis about their origin, aesthetic justifications, and the historical and geographic conditions which may infer these specificities.

  12. Blue space geographies: Enabling health in place.

    Science.gov (United States)

    Foley, Ronan; Kistemann, Thomas

    2015-09-01

    Drawing from research on therapeutic landscapes and relationships between environment, health and wellbeing, we propose the idea of 'healthy blue space' as an important new development Complementing research on healthy green space, blue space is defined as; 'health-enabling places and spaces, where water is at the centre of a range of environments with identifiable potential for the promotion of human wellbeing'. Using theoretical ideas from emotional and relational geographies and critical understandings of salutogenesis, the value of blue space to health and wellbeing is recognised and evaluated. Six individual papers from five different countries consider how health can be enabled in mixed blue space settings. Four sub-themes; embodiment, inter-subjectivity, activity and meaning, document multiple experiences within a range of healthy blue spaces. Finally, we suggest a considerable research agenda - theoretical, methodological and applied - for future work within different forms of blue space. All are suggested as having public health policy relevance in social and public space. Copyright © 2015 Elsevier Ltd. All rights reserved.

  13. Vendor differences in alcohol consumption and the contribution of dopamine receptors to Pavlovian-conditioned alcohol-seeking in Long-Evans rats.

    Science.gov (United States)

    Sparks, Lindsay M; Sciascia, Joanna M; Ayorech, Ziada; Chaudhri, Nadia

    2014-02-01

    Drug-associated environmental stimuli elicit craving in humans and drug-seeking in animals. We tested the hypothesis that Pavlovian-conditioned alcohol-seeking is mediated by dopamine, using rats from two vendors. Male, Long-Evans rats (220-240 g) from Charles River (St-Constant, QC, Canada) and Harlan Laboratories (Indianapolis, IN, USA) received 21 sessions of intermittent, 24-h access to ethanol (15 %, v/v) and water in the home-cage. Subsequently, rats were trained to discriminate between one conditioned stimulus (CS+) that was paired with ethanol (0.2 ml per CS+) and a second stimulus (CS-) that was not. Entries into a fluid port where ethanol was delivered were recorded. Next, rats were exposed to a different context where cues and ethanol were withheld. At test, responding to the CS+ and CS- without ethanol was assessed in the second, non-alcohol context. Injections (1 ml/kg; s.c.) of the dopamine D1-receptor antagonist SCH 23390 (0, 3.33, and 10 μg/kg) or dopamine D2-receptor antagonist eticlopride (0, 5, and 10 μg/kg) were administered before test. Home-cage alcohol consumption was higher in Harlan rats than Charles River rats. At test, saline-treated rats responded more to the alcohol-predictive CS+ than the CS-. While SCH 23390 attenuated CS+ responding in rats from both vendors, eticlopride reduced CS+ responding in Harlan rats only. Subsequently, SCH 23390 but not eticlopride attenuated CS+ responding when the CS+ was again paired with ethanol. These results indicate important differences in alcohol consumption in Long-Evans rats from different suppliers, and highlight a novel role for dopamine in Pavlovian-conditioned alcohol-seeking.

  14. Bile salt-induced pro-oxidant liver damage promotes transplanted cell proliferation for correcting Wilson disease in the Long-Evans Cinnamon rat model.

    Science.gov (United States)

    Joseph, Brigid; Kapoor, Sorabh; Schilsky, Michael L; Gupta, Sanjeev

    2009-05-01

    Insights into disease-specific mechanisms for liver repopulation are needed for cell therapy. To understand the efficacy of pro-oxidant hepatic perturbations in Wilson disease, we studied Long-Evans Cinnamon (LEC) rats with copper toxicosis under several conditions. Hepatocytes from healthy Long-Evans Agouti (LEA) rats were transplanted intrasplenically into the liver. A cure was defined as lowering of copper to below 250 microg/g liver, presence of ATPase, Cu++ transporting, beta polypeptide (atp7b) messenger RNA (mRNA) in the liver and improvement in liver histology. Treatment of animals with the hydrophobic bile salt, cholic acid, or liver radiation before cell transplantation produced cure rates of 14% and 33%, respectively; whereas liver radiation plus partial hepatectomy followed by cell transplantation proved more effective, with cure in 55%, P < 0.01; and liver radiation plus cholic acid followed by cell transplantation was most effective, with cure in 75%, P < 0.001. As a group, cell therapy cures in rats preconditioned with liver radiation plus cholic acid resulted in less hepatic copper, indicating greater extent of liver repopulation. We observed increased hepatic catalase and superoxide dismutase activities in LEC rats, suggesting chronic oxidative stress. After liver radiation or cholic acid, hepatic lipid peroxidation levels increased, indicating further oxidative injury, although we did not observe overt additional cytotoxicity. This contrasted with healthy animals in which liver radiation and cholic acid produced hepatic steatosis and loss of injured hepatocytes. We concluded that pro-oxidant perturbations were uniquely effective for cell therapy in Wilson disease because of the nature of preexisting hepatic damage.

  15. Comparison of Alcian Blue, Trypan Blue, and Toluidine Blue for Visualization of the Primo Vascular System Floating in Lymph Ducts

    Directory of Open Access Journals (Sweden)

    Da-Un Kim

    2015-01-01

    Full Text Available The primo vascular system (PVS, floating in lymph ducts, was too transparent to be observed by using a stereomicroscope. It was only detectable with the aid of staining dyes, for instance, Alcian blue, which was injected into the lymph nodes. Some dyes were absorbed preferentially by the PVS than the lymph wall. It remains a standing problem to know what dyes are absorbed better by the PVS than the lymph walls. Such information would be useful to unravel the biochemical properties of the PVS that are badly in need for obtaining large amount of PVS specimens. In the current work we tried two other familiar dyes which were used in PVS research before. We found that Trypan blue and toluidine blue did not visualize the PVS. Trypan blue was cleared by the natural washing. Toluidine blue did not stain the PVS, but it did leave stained spots in the lymph wall and its surrounding tissues, and it leaked out of the lymph wall to stain surrounding connective tissues. These completely different behaviors of the three dyes were found for the first time in the current work and provide valuable information to elucidate the mechanism through which some special dyes stained the PVS preferentially compared to the lymphatic wall.

  16. Variations on the "Blue-Bottle" Demonstration Using Food Items That Contain FD&C Blue #1

    Science.gov (United States)

    Staiger, Felicia A.; Peterson, Joshua P.; Campbell, Dean J.

    2015-01-01

    Erioglaucine dye (FD&C Blue #1) can be used instead of methylene blue in the classic "blue-bottle" demonstration. Food items containing FD&C Blue #1 and reducing species such as sugars can therefore be used at the heart of this demonstration, which simply requires the addition of strong base such as sodium hydroxide lye.

  17. POSTPARTUM BLUES PADA PERSALINAN DIBAWAH USIA DUA PULUH TAHUN

    OpenAIRE

    Kurniasari Pratiwi; Istiani Nur Chasanah; Sri Martuti

    2017-01-01

    Postpartum blues or baby blues is a feeling of sadness experienced by mothers after childbirth related to the baby. Postpartum blues is like an iceberg that is difficult to detect because there are still many people who do not understand about the event. Nevertheless, postpartum blues not being handled properly is one of the factors precipitating the occurrence of postpartum depression,  can be fatal for mother and baby. Postpartum blues more common in women who marry in their early age. Indo...

  18. Postpartum Blues pada Persalinan Dibawah Usia Dua Puluh Tahun

    OpenAIRE

    Pratiwi, Kurniasari; Chasanah, Istiani Nur; Martuti, Sri

    2016-01-01

    Postpartum blues or baby blues is a feeling of sadness experienced by mothers after childbirth related to the baby. Postpartum blues is like an iceberg that is difficult to detect because there are still many people who do not understand about the event. Nevertheless, postpartum blues not being handled properly is one of the factors precipitating the occurrence of postpartum depression, can be fatal for mother and baby. Postpartum blues more common in women who marry in their early age. Indo...

  19. "Blue-Collar Blues" uurib töösuhteid uutes oludes / Janar Ala

    Index Scriptorium Estoniae

    Ala, Janar, 1979-

    2009-01-01

    Tööproblemaatikat käsitlev näitus "Blue-Collar Blues" Tallinna Kunstihoones ja Tallinna Kunstihoone galeriis 31. jaanuarini 2010, kuraator Anders Härm. Lähemalt belgia-mehhiko kunstniku Francis Alys'e videost, austria kunstniku Oliver Ressleri ning venetsueela-saksa politoloogi Dario Azzelini videost "Viis tehast. Tööliste kontroll Venezuelas"

  20. "Blue and seven phenomena" among Japanese students.

    Science.gov (United States)

    Saito, M

    1999-10-01

    To investigate color and number preferences in Japan, 586 university undergraduates (239 men and 347 women; M age = 20.9 yr.) were asked to name a color (Question 1), to name their preferred color (Question 2), and to name their preferred number between zero and nine (Question 3). The results showed that Japanese students chose blue (33.5%) or red (26.0%) when asked to name a color but that red was not chosen as frequently as blue as a preferred color (red: 11.1%, blue: 37.1%). Sex differences were found on both Questions 1 and 2 by chi-squared test. Black was chosen more by men, while pink was selected more by women. 22.5% subjects also selected the number seven, supporting Simon's observation of the "blue-seven phenomenon." The reasons given for the choice showed that seven was "a lucky number" and "represented happiness" among Japanese students. Four colors (blue, red, white, and black) accounted for 76.8% and 65.1% of responses to Questions 1 and 2, respectively, and odd numbers 68.4% for Question 3.

  1. Blue light inhibits proliferation of melanoma cells

    Science.gov (United States)

    Becker, Anja; Distler, Elisabeth; Klapczynski, Anna; Arpino, Fabiola; Kuch, Natalia; Simon-Keller, Katja; Sticht, Carsten; van Abeelen, Frank A.; Gretz, Norbert; Oversluizen, Gerrit

    2016-03-01

    Photobiomodulation with blue light is used for several treatment paradigms such as neonatal jaundice, psoriasis and back pain. However, little is known about possible side effects concerning melanoma cells in the skin. The aim of this study was to assess the safety of blue LED irradiation with respect to proliferation of melanoma cells. For that purpose we used the human malignant melanoma cell line SK-MEL28. Cell proliferation was decreased in blue light irradiated cells where the effect size depended on light irradiation dosage. Furthermore, with a repeated irradiation of the melanoma cells on two consecutive days the effect could be intensified. Fluorescence-activated cell sorting with Annexin V and Propidium iodide labeling did not show a higher number of dead cells after blue light irradiation compared to non-irradiated cells. Gene expression analysis revealed down-regulated genes in pathways connected to anti-inflammatory response, like B cell signaling and phagosome. Most prominent pathways with up-regulation of genes were cytochrome P450, steroid hormone biosynthesis. Furthermore, even though cells showed a decrease in proliferation, genes connected to the cell cycle were up-regulated after 24h. This result is concordant with XTT test 48h after irradiation, where irradiated cells showed the same proliferation as the no light negative control. In summary, proliferation of melanoma cells can be decreased using blue light irradiation. Nevertheless, the gene expression analysis has to be further evaluated and more studies, such as in-vivo experiments, are warranted to further assess the safety of blue light treatment.

  2. Blue Energy North Sea Canal. Feasibility Study Blue Energy Plant along the North Sea Canal; Blue Energy Noordzeekanaal. Haalbaarheidsonderzoek Blue Energy centrale langs het Noordzeekanaal

    Energy Technology Data Exchange (ETDEWEB)

    Swinkels, C.M.; Bijlsma, A.C.; Hommes, S.

    2009-12-15

    This study offers insight in the potential of the North Sea Canal for energy extraction from salinity gradients (Blue Energy) and offers advice on the most suitable locations where the extraction can be conducted. Moreover, this project identifies the relevant actors and explores their responsibilities and interests. [Dutch] In deze verkenning wordt de potentie van het Noordzeekanaal voor energiewinning uit zoet-zout gradienten (Blue Energy) inzichtelijk gemaakt van en een advies gegeven over de meest geschikte locatie(s) waar deze winning plaats zou kunnen vinden. Verder worden in dit project de relevante actoren geidentificeerd en worden hun verantwoordelijkheden en belangen verkend.

  3. Change in NO2 reveals Parade Blue is cleaner than APEC Blue

    Science.gov (United States)

    Liu, Haoran; Liu, Cheng; Xie, Zhouqing; Xie, Pinhua; Xing, Chengzhi; Xu, Jin; Liu, Jianguo

    2016-04-01

    The spectacular Parade Blue (blue sky), and APEC Blue (blue sky) were renowned worldwide caused by the limiting discharge policy of the Chinese government. For evaluating the reduction of these two events, we analyzed the variation of NO2 columns Beijing by looking at a long-term monitoring using Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) and the Ozone Monitoring Instrument (OMI) satellite observations from August 2014 to November 2015, covering Grand Military Parade (GMP, September 2015) and APEC (November 2014) period. We found that the NO2 columns abruptly decreased both GMP and APEC. However, change in the MAX-DOAS and the OMI NO2 during GMP was larger than during APEC via comparison with the same period in 2014, indicating Parade Blue is cleaner than APEC Blue. The spatial distribution of NO2 and backward trajectories together with meterological parameters suggested that GMP Blue may be due to the regional significant decreasing discharge in peripheral cities. No weekend effect during GMP further confirmed the role of controlling discharge. This study provides direct evidence that it is possible to clean air in China.

  4. Adolescent social isolation does not lead to persistent increases in anxiety- like behavior or ethanol intake in female long-evans rats.

    Science.gov (United States)

    Butler, Tracy R; Carter, Eugenia; Weiner, Jeffrey L

    2014-08-01

    Clinically, early life stress and anxiety disorders are associated with increased vulnerability for alcohol use disorders. In male rats, early life stress, imparted by adolescent social isolation, results in long-lasting increases in a number of behavioral risk factors for alcoholism, including greater anxiety-like behaviors and ethanol (EtOH) intake. Several recent studies have begun to use this model to gain insight into the relationships among anxiety measures, stress, EtOH intake, and neurobiological correlates driving these behaviors. As prior research has noted significant sex differences in the impact of adolescent stress on anxiety measures and EtOH drinking, the current study was conducted to determine if this same model produces an "addiction vulnerable" phenotype in female rodents. Female Long Evans rats were socially isolated (SI; 1/cage) or group housed (GH; 4/cage) for 6 weeks during adolescence. After this housing manipulation, behavioral assessment was conducted using the elevated plus maze, response to novelty in an open field environment, and the light/dark box. After behavioral testing, home cage EtOH drinking was assessed across an 8-week period. No group differences were detected in any of the behavioral measures of unconditioned anxiety-like behavior. Greater EtOH intake and preference were observed in SI females but these differences did not persist. The SI/GH model, which results in robust and enduring increases in anxiety measures and EtOH self-administration in male Long Evans rats, did not result in similar behavioral changes in female rats. These data, and that of others, suggest that adolescent social isolation is not a useful model with which to study neurobiological substrates linking antecedent anxiety and addiction vulnerability in female rats. Given the compelling epidemiological evidence that the relationship between chronic adolescent stress and alcohol addiction is particularly strong in women, there is clearly an urgent need

  5. Obesity and type 2 diabetes, not a diet high in fat, sucrose, and cholesterol, negatively impacts bone outcomes in the hyperphagic Otsuka Long Evans Tokushima Fatty rat.

    Science.gov (United States)

    Ortinau, Laura C; Linden, Melissa A; Dirkes, Rebecca; Rector, R Scott; Hinton, Pamela S

    2017-12-01

    Obesity and type 2 diabetes (T2D) increase fracture risk; however, the association between obesity/T2D may be confounded by consumption of a diet high in fat, sucrose, and cholesterol (HFSC). The study objective was to determine the main and interactive effects of obesity/T2D and a HFSC diet on bone outcomes using hyperphagic Otuska Long Evans Tokushima Fatty (OLETF) rats and normophagic Long Evans Tokushima Otsuka (LETO) controls. At 8weeks of age, male OLETF and LETO rats were randomized to either a control (CON, 10 en% from fat as soybean oil) or HFSC (45 en% from fat as soybean oil/lard, 17 en% sucrose, and 1wt%) diet, resulting in four treatment groups. At 32weeks, total body bone mineral content (BMC) and density (BMD) and body composition were measured by dual-energy X-ray absorptiometry, followed by euthanasia and collection of blood and tibiae. Bone turnover markers and sclerostin were measured using ELISA. Trabecular microarchitecture of the proximal tibia and geometry of the tibia mid-diaphysis were measured using microcomputed tomography; whole-bone and tissue-level biomechanical properties were evaluated using torsional loading of the tibia. Two-factor ANOVA was used to determine main and interactive effects of diet (CON vs. HFSC) and obesity/T2D (OLETF vs. LETO) on bone outcomes. Hyperphagic OLEFT rats had greater final body mass, body fat, and fasting glucose than normophagic LETO, with no effect of diet. Total body BMC and serum markers of bone formation were decreased, and bone resorption and sclerostin were increased in obese/T2D OLETF rats. Trabecular bone volume and microarchitecture were adversely affected by obesity/T2D, but not diet. Whole-bone and tissue-level biomechanical properties of the tibia were not affected by obesity/T2D; the HFSC diet improved biomechanical properties only in LETO rats. Obesity/T2D, regardless of diet, negatively impacted the balance between bone formation and resorption and trabecular bone volume and

  6. Nanotubes based on monolayer blue phosphorus

    KAUST Repository

    Montes Muñoz, Enrique

    2016-07-08

    We demonstrate structural stability of monolayer zigzag and armchair blue phosphorus nanotubes by means of molecular dynamics simulations. The vibrational spectrum and electronic band structure are determined and analyzed as functions of the tube diameter and axial strain. The nanotubes are found to be semiconductors with a sensitive indirect band gap that allows flexible tuning.

  7. A Code Blue Answer to Training

    Science.gov (United States)

    Huneycutt, Richy; Callahan, Barbara; Welch, Alexis

    2008-01-01

    Code Blue addresses the capacity challenges in healthcare training. This pilot, grant funded project, focuses on a holistic approach to selecting and educating career ready and capable students and training them to be confident and competent healthcare workers. Lessons learned from this project will be assessed and reviewed for replication.

  8. Biodecolorization and biodegradation of Reactive Blue by ...

    African Journals Online (AJOL)

    Aspergillus sp. effectively decolorized Reactive Blue and other structurally different synthetic dyes. Agitation was found to be an important parameter, while glucose (99%), sucrose (97%) and mannitol (98%) were the best carbon sources for the decolorization. Decolorization was effective in an acidic environment (pH 3).

  9. Delta Blues Scholarship and Imperialist Nostalgia.

    Science.gov (United States)

    Nye, William P.

    When Delta blues are considered to be "folk music," the genre is inextricably tied to the neocolonial, sharecropping system of cotton production characteristic of the Mississippi Delta region between the Civil War and World War II. "Imperialist nostalgia," then, arises in accounts which pay primary and positive tribute to blues…

  10. Visualising DNA in Classrooms Using Nile Blue

    Science.gov (United States)

    Milne, Christine; Roche, Scott; McKay, David

    2008-01-01

    Giving students the opportunity to extract, manipulate and visualise DNA molecules enhances a constructivist approach to learning about modern techniques in biology and biotechnology Visualisation usually requires agarose gel electrophoresis and staining. In this article, we report on an alternative DNA stain, Nile Blue A, that may be used in the…

  11. Blue whales respond to anthropogenic noise.

    Directory of Open Access Journals (Sweden)

    Mariana L Melcón

    Full Text Available Anthropogenic noise may significantly impact exposed marine mammals. This work studied the vocalization response of endangered blue whales to anthropogenic noise sources in the mid-frequency range using passive acoustic monitoring in the Southern California Bight. Blue whales were less likely to produce calls when mid-frequency active sonar was present. This reduction was more pronounced when the sonar source was closer to the animal, at higher sound levels. The animals were equally likely to stop calling at any time of day, showing no diel pattern in their sensitivity to sonar. Conversely, the likelihood of whales emitting calls increased when ship sounds were nearby. Whales did not show a differential response to ship noise as a function of the time of the day either. These results demonstrate that anthropogenic noise, even at frequencies well above the blue whales' sound production range, has a strong probability of eliciting changes in vocal behavior. The long-term implications of disruption in call production to blue whale foraging and other behaviors are currently not well understood.

  12. Blue whales respond to anthropogenic noise.

    Science.gov (United States)

    Melcón, Mariana L; Cummins, Amanda J; Kerosky, Sara M; Roche, Lauren K; Wiggins, Sean M; Hildebrand, John A

    2012-01-01

    Anthropogenic noise may significantly impact exposed marine mammals. This work studied the vocalization response of endangered blue whales to anthropogenic noise sources in the mid-frequency range using passive acoustic monitoring in the Southern California Bight. Blue whales were less likely to produce calls when mid-frequency active sonar was present. This reduction was more pronounced when the sonar source was closer to the animal, at higher sound levels. The animals were equally likely to stop calling at any time of day, showing no diel pattern in their sensitivity to sonar. Conversely, the likelihood of whales emitting calls increased when ship sounds were nearby. Whales did not show a differential response to ship noise as a function of the time of the day either. These results demonstrate that anthropogenic noise, even at frequencies well above the blue whales' sound production range, has a strong probability of eliciting changes in vocal behavior. The long-term implications of disruption in call production to blue whale foraging and other behaviors are currently not well understood.

  13. The Biology of blue-green algae

    National Research Council Canada - National Science Library

    Carr, Nicholas G; Whitton, B. A

    1973-01-01

    .... This book, extensively illustrated and thoroughly referenced, will provide the source material for students, and experienced as well as new research workers should find it of great value. A series of short appendices summarize details of culture collections, media and some specialized aspects of growing blue-green algae.

  14. KINETICS AND MECHANISM OF PRUSSIAN BLUE FORMATION ...

    African Journals Online (AJOL)

    On the basis of the experimental findings, a plausible mechanism for the formation of soluble form of Prussian blue (KFe{Fe(CN)6}x H2O) and rate law are proposed. The activation parameters for the title reaction are estimated. A relatively low energy of activation (23 kJ mol-1) and high negative entropy of activation (-231 ...

  15. Biodecolorization and biodegradation of Reactive Blue by ...

    African Journals Online (AJOL)

    SERVER

    2007-06-18

    Jun 18, 2007 ... Reactive Red (33%) and Coloron Violet (66%) were decolorized moderately.The dye Coloron Black (9%) was highly ... ues into river and lakes lead to higher biological oxygen demand (BOD) causing serious ... Reactive Red, Reactive Blue were purchased from Evergreen Ind- ustries, Ahmedabad, India.

  16. METHYLENE BLUE ADSORPTION FROM GLYCEROL SOLUTION ...

    African Journals Online (AJOL)

    Preferred Customer

    ABSTRACT. The mechanism of methylene blue adsorption onto the surface of synthetic acicular habit of α- goethite from glycerol solution has been studied through batch experiment at 25, 30 and 35 0C in a glass cell of minimal dead volume. To describe the adsorption results, an attempt was made to fit the data to the ...

  17. The Blue Compact Dwarf Galaxy IZw18

    NARCIS (Netherlands)

    Musella, I.; Marconi, M.; Fiorentino, G.; Clementini, G.; Aloisi, A.; Annibali, F.; Contreras, R.; Saha, A.; Tosi, M.; van der Marel, R. P.

    2012-01-01

    We present the results obtained for the Blue compact galaxy IZw18 on the basis of ACS HST data obtained from our group. In particular, we discuss the stellar population and the variable stars content of this galaxy to get information about its star formation history and distance.

  18. [The dangers of blue light: True story!].

    Science.gov (United States)

    Renard, G; Leid, J

    2016-05-01

    The dangers of the blue light are the object of numerous publications, for both the scientific community and the general public. The new prolific development of light sources emitting potentially toxic blue light (415-455nm) ranges from LED (Light Emitting Diodes) lamps for interior lighting to television screens, computers, digital tablets and smartphones using OLED (Organic Light Emitting Diode) or AMOLED (Active-Matrix Organic Light Emitting Diode) technology. First we will review some technical terms and the main characteristics of light perceived by the human eye. Then we will discuss scientific proof of the toxicity of blue light to the eye, which may cause cataract or macular degeneration. Analysis of the light spectra of several light sources, from natural light to LED lamps, will allow us to specify even better the dangers related to each light source. LED lamps, whether used as components for interior lighting or screens, are of concern if they are used for extended viewing times and at short distance. While we can protect ourselves from natural blue light by wearing colored glasses which filter out, on both front and back surfaces, the toxic wavelengths, it is more difficult to protect oneself from LED lamps in internal lighting, the use of which should be restricted to "white warmth" lamps (2700K). As far as OLED or AMOLED screens are concerned, the only effective protection consists of using them occasionally and only for a short period of time. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  19. Agonism and dominance in female blue monkeys.

    Science.gov (United States)

    Klass, Keren; Cords, Marina

    2015-12-01

    Agonistic behavior features prominently in hypotheses that explain how social variation relates to ecological factors and phylogenetic constraints. Dominance systems vary along axes of despotism, tolerance, and nepotism, and comparative studies examine cross-species patterns in these classifications. To contribute to such studies, we present a comprehensive picture of agonistic behavior and dominance relationships in wild female blue monkeys (Cercopithecus mitis), an arboreal guenon, with data from 9 groups spanning 18 years. We assessed where blue monkeys fall along despotic, tolerant, and nepotistic spectra, how their dominance system compares to other primates, primarily cercopithecines, and whether their agonistic behavior matches socioecological model predictions. Blue monkeys showed low rates of mainly low-intensity agonism and little counter-aggression. Rates increased with rank and group size. Dominance asymmetry varied at different organizational levels, being more pronounced at the level of interactions than dyad or group. Hierarchies were quite stable, had moderate-to-high linearity and directional consistency and moderate steepness. There was clear maternal rank inheritance, but inconsistent adherence to Kawamura's rules. There was little between-group variation, although hierarchy metrics showed considerable variation across group-years. Overall, blue monkeys have moderately despotic, moderately tolerant, and nepotistic dominance hierarchies. They resemble other cercopithecines in having significantly linear and steep hierarchies with a generally stable, matriline-based structure, suggesting a phylogenetic basis to this aspect of their social system. Blue monkeys most closely match Sterck et al.'s [1997] Resident-Nepotistic-Tolerant dominance category, although they do not fully conform to predictions of any one socioecological model. Our results suggest that socioecological models might better predict variation within than across clades, thereby

  20. Blue-hazard-free Candlelight OLED.

    Science.gov (United States)

    Jou, Jwo-Huei; Singh, Meenu; Su, Yu-Ting; Liu, Shih-Hao; He, Zhe-Kai

    2017-03-19

    A candlelight-style organic light emitting diode (OLED) is a human-friendly type of lighting because it is blue-hazard-free and has a low correlated color temperature (CCT) illumination. The low CCT lighting is deprived of high-energy blue radiation, and it can be used for a longer duration before causing retinal damage. This work presents the comprehensive protocols for the fabrication of blue-hazard-free candlelight OLEDs. The emission spectrum of the OLED was characterized by the maximum exposure time limit of the retina and the melatonin suppression sensitivity. The devices can be fabricated using dry and wet processes. The dry-processed OLED resulted in a CCT of 1,940 K and exhibited a maximum retinal exposure limit of 1,287 s at a brightness of 500 lx. It showed 2.61% melatonin suppression sensitivity relative to 480 nm blue light. The wet-processed OLED, where the spin coating is used to deposit hole injection, hole transport, and emissive layers, making fabrication fast and economical, produced a CCT of 1,922 K and showed a maximum retinal exposure limit of 7,092 at a brightness of 500 lx. The achieved relative melatonin suppression sensitivity of 1.05% is 86% and 96% less than that of the light emitting diode (LED) and compact fluorescent lamp (CFL), respectively. Wet-processed blue-hazard-free candlelight OLED exhibited a power efficiency of 30 lm/W, which is 2 times that of the incandescent bulb and 300 times that of the candle.

  1. Pianure Blues: From the Dialect of the Plains to the English of the Blues

    Directory of Open Access Journals (Sweden)

    Giovanni Nadiani

    2016-06-01

    Full Text Available In this article the authors describe a joint performance project called Pianure Blues, in which poems in Romagnolo dialect are transposed into English and performed as blues songs, and in which songs from the Anglo-American blues/roots/folk tradition are transposed and performed as poems in Romagnolo dialect – a process they have called ‘trans-staging’. A process in which they are writers and performers and, especially, translators; translators of each other’s voices, stories, landscapes, rhythms and sounds as they look for the bond between places, languages and traditions that seem very distant from each other but which find a common mood and poetic language, a common aesthetic, in their performances. The authors reflect on the creative process involved and on the significance of establishing an intersemiotic dialogue between a ‘minority’ dialect such as Romagnolo and a ‘global’ language such as English, and the blues, have become.

  2. Hubble's View of Little Blue Dots

    Science.gov (United States)

    Kohler, Susanna

    2018-02-01

    The recent discovery of a new type of tiny, star-forming galaxy is the latest in a zoo of detections shedding light on our early universe. What can we learn from the unique little blue dots found in archival Hubble data?Peas, Berries, and DotsGreen pea galaxies identified by citizen scientists with Galaxy Zoo. [Richard Nowell Carolin Cardamone]As telescope capabilities improve and we develop increasingly deeper large-scale surveys of our universe, we continue to learn more about small, faraway galaxies. In recent years, increasing sensitivity first enabled the detection of green peas luminous, compact, low-mass (10 billion solar masses; compare this to the Milky Ways 1 trillion solar masses!) galaxies with high rates of star formation.Not long thereafter, we discovered galaxies that form stars similarly rapidly, but are even smaller only 330 million solar masses, spanning less than 3,000 light-years in size. These tiny powerhouses were termed blueberries for their distinctive color.Now, scientists Debra and Bruce Elmegreen (of Vassar College and IBM Research Division, respectively) report the discovery of galaxies that have even higher star formation rates and even lower masses: little blue dots.Exploring Tiny Star FactoriesThe Elmegreens discovered these unique galaxies by exploring archival Hubble data. The Hubble Frontier Fields data consist of deep images of six distant galaxy clusters and the parallel fields next to them. It was in the archival data for two Frontier Field Parallels, those for clusters Abell 2744 and MAS J0416.1-2403, that the authors noticed several galaxies that stand out as tiny, bright, blue objects that are nearly point sources.Top: a few examples of the little blue dots recently identified in two Hubble Frontier Field Parallels. Bottom: stacked images for three different groups of little blue dots. [Elmegreen Elmegreen 2017]The authors performed a search through the two Frontier Field Parallels, discovering a total of 55 little blue dots

  3. Developing the urban blue: Comparative health responses to blue and green urban open spaces in Germany.

    Science.gov (United States)

    Völker, Sebastian; Kistemann, Thomas

    2015-09-01

    Recently, new perspectives upon healthy urban open spaces propose that open spaces can be regarded as urban green or blue spaces. However, there has so far been very little research into blue environments and their benefits for mental well-being. Our article focuses on the effects of water in cities, "urban blue" (as compared to "urban green"), on human health and well-being. To assess the mental well-being of visitors, we conducted qualitative semi-standardised interviews (n=113), asking which differences in well-being occur when visiting urban green and blue spaces in high-density areas of the inner city in Dusseldorf and Cologne, Germany. Although we found many similarities, some health-enhancing effects for users turned out to be prominent for urban blue in the four conceptual therapeutic landscape dimensions: experienced, symbolic, social and activity space. These effects include enhanced contemplation, emotional bonding, participation, and physical activity. The results suggest that urban blue as a health-promoting factor needs more detailed and accurate determination and examination of its general and local health-enhancing effects. Copyright © 2014 Elsevier Ltd. All rights reserved.

  4. The Blue Coma: The Role of Methylene Blue in Unexplained Coma After Cardiac Surgery.

    Science.gov (United States)

    Martino, Enrico Antonio; Winterton, Dario; Nardelli, Pasquale; Pasin, Laura; Calabrò, Maria Grazia; Bove, Tiziana; Fanelli, Giovanna; Zangrillo, Alberto; Landoni, Giovanni

    2016-04-01

    Methylene blue commonly is used as a dye or an antidote, but also can be used off label as a vasopressor. Serotonin toxicity is a potentially lethal and often misdiagnosed condition that can result from drug interaction. Mild serotonin toxicity previously was reported in settings in which methylene blue was used as a dye. The authors report 3 cases of life-threatening serotonin toxicity in patients undergoing chronic selective serotonin reuptake inhibitor (SSRI) therapy who also underwent cardiac surgery and received methylene blue to treat vasoplegic syndrome. An observational study. A cardiothoracic intensive care unit (ICU) in a teaching hospital. Three patients who received methylene blue after cardiac surgery, later discovered to be undergoing chronic SSRI therapy. None. All 3 patients received high doses of fentanyl during general anesthesia. They all developed vasoplegic syndrome and consequently were given methylene blue in the ICU. All 3 patients developed serotonin toxicity, including coma, after this administration and diagnostic tests were negative for acute intracranial pathology. Coma lasted between 1 and 5 days. Two patients were discharged from the ICU shortly after awakening, whereas the third patient experienced a complicated postoperative course for concomitant refractory low-cardiac-output syndrome. Patients undergoing chronic SSRI therapy should not be administered methylene blue to treat vasoplegic syndrome. Copyright © 2016 Elsevier Inc. All rights reserved.

  5. Unraveling the Mystery of the Blue Fog: Structure, Properties, and Applications of Amorphous Blue Phase III.

    Science.gov (United States)

    Gandhi, Sahil Sandesh; Chien, Liang-Chy

    2017-10-10

    The amorphous blue phase III of cholesteric liquid crystals, also known as the "blue fog," are among the rising stars in materials science that can potentially be used to develop next-generation displays with the ability to compete toe-to-toe with disruptive technologies like organic light-emitting diodes. The structure and properties of the practically unobservable blue phase III have eluded scientists for more than a century since it was discovered. This progress report reviews the developments in this field from both fundamental and applied research perspectives. The first part of this progress report gives an overview of the 130-years-long scientific tour-de-force that very recently resulted in the revelation of the mysterious structure of blue phase III. The second part reviews progress made in the past decade in developing electrooptical, optical, and photonic devices based on blue phase III. The strong and weak aspects of the development of these devices are underlined and criticized, respectively. The third- and-final part proposes ideas for further improvement in blue phase III technology to make it feasible for commercialization and widespread use. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  6. Improving urban visibility through fractal analysis of street edges: The case of John Evans Atta Mills High Street in Accra, Ghana

    Directory of Open Access Journals (Sweden)

    R.A. Oppong

    2017-06-01

    Full Text Available Streets are a representation of cities, and the image of a city is a reflection of its home country. Although attempts to ensure harmonious spatial and environmental development in Ghanaian settlements date back to the colonial era, these efforts have minimal physical manifestation in the urban fabric of the city of Accra. The Independence Arch of Ghana, an important landmark in the urban fabric and history of Accra, lacks the striking vista and approach it deserves. This paper introduces the use of fractal analysis of street edges to understand the characteristics of the John Evans Atta Mills (JEAM High Street for developing recommendations to improve visibility along its stretch and the overall image of the city. The box-counting method with visual survey was used in research. The pertinent questions this paper seeks to address are as follows: What factors affect the visibility and imageability of JEAM High Street? What design aspects should be considered to improve urban visibility along JEAM High Street? What is the link of fractals to urban design and architecture? The paper recommends various design considerations and qualities to improve the urban visibility and imageability of JEAM High Street.

  7. The effects of cannabidiol (CBD) on Δ⁹-tetrahydrocannabinol (THC) self-administration in male and female Long-Evans rats.

    Science.gov (United States)

    Wakeford, Alison G P; Wetzell, Bradley B; Pomfrey, Rebecca L; Clasen, Matthew M; Taylor, William W; Hempel, Briana J; Riley, Anthony L

    2017-08-01

    Despite widespread cannabis use in humans, few rodent models exist demonstrating significant Δ⁹-tetrahydrocannabinol (THC) self-administration, possibly due to THC's co-occurring aversive effects, which impact drug reinforcement. Cannabis contains a number of phytocannabinoids in addition to THC, one of which, cannabidiol (CBD), has been reported to antagonize some of the aversive effects of THC. Given such effects of CBD, it is possible that it might influence THC intravenous self-administration in rodents. Accordingly, male and female Long-Evans rats were trained to self-administer THC over a 3-week period and then were assessed for the effects of CBD on responding for THC at 1:1 and 1:10 dose ratios or for the establishment of cocaine self-administration (as a positive control for drug self-administration). Consistent with previous research, THC self-administration was modest and only evident in a subset of animals (and unaffected by sex). Cocaine self-administration was high and evident in the majority of animals tested, indicating that the design was sensitive to drug reinforcement. There was no effect of CBD pretreatment on THC intravenous self-administration at any CBD:THC dose ratio. Future developments of animal models of THC self-administration and the examination of factors that affect its display remain important to establish procedures designed to assess the basis for and treatment of cannabis use and abuse. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  8. Isolation and molecular characterization of group B Streptococcus from laboratory Long-Evans rats (Rattus norvegicus) with and without invasive group B streptococcal disease.

    Science.gov (United States)

    Bodi Winn, Caroline; Bakthavatchalu, Vasudevan; Esmail, Michael Y; Feng, Yan; Dzink-Fox, JoAnn; Richey, Lauren; Perkins, Scott E; Nordberg, Eric K; Fox, James G

    2017-11-21

    Group B Streptococcus (S. agalactiae, GBS) is a Gram-positive opportunistic pathogen that inhabits the respiratory, urogenital and gastrointestinal tracts of humans and animals. Maternal colonization of GBS is a risk factor for a spectrum of clinical diseases in humans and a principle cause of neonatal meningitis and septicaemia. We describe polymicrobial sepsis including GBS in two gravid adult female Long-Evans rats experiencing acute mortality from a colony of long-term breeding pairs. Fluorescent in situ hybridization confirmed GBS association with pathological changes in affected tissues, including the heart and uterus. Characterization of seven GBS strains obtained from clinically affected and non-affected animals indicated similar antibiotic resistance and susceptibility patterns to that of human strains of GBS. The rat strains have virulence factors known to contribute to pathogenicity, and shared serotypes with human invasive isolates. Phylogenetic analyses revealed that one rat-derived GBS strain was more closely related to human-derived strains than other rat-derived strains, strengthening the notion that interspecies transmission is possible. To our knowledge, this is the first investigation of genotypic and phenotypic features of rat-derived GBS strains and their comparison to human- and other animal-derived GBS strains. Since GBS commonly colonizes commercially available rats, its exclusion as a potential pathogen for immunocompromised or stressed animals is recommended.

  9. Effects of prenatal exposure to a low dose atrazine metabolite mixture on pubertal timing and prostate development of male Long-Evans rats

    Energy Technology Data Exchange (ETDEWEB)

    Stanko, Jason [National Institute of Environmental Health Sciences (NIEHS); Enoch, Rolondo [North Carolina Central University, Durham; Rayner, Jennifer L [ORNL; Davis, Christine [U.S. Environmental Protection Agency; Wolf, Douglas [U.S. Environmental Protection Agency; Malarkey, David [University of North Carolina, Chapel Hill; Fenton, Suzanne [National Institute of Environmental Health Sciences (NIEHS)

    2010-12-01

    The present study examines the postnatal reproductive development of male rats following prenatal exposure to an atrazine metabolite mixture (AMM) consisting of the herbicide atrazine and its environmental metabolites diaminochlorotriazine, hydroxyatrazine, deethylatrazine, and deisopropylatrazine. Pregnant Long-Evans rats were treated by gavage with 0.09, 0.87, or 8.73 mg AMM/kg body weight (BW), vehicle, or 100 mg ATR/kg BW positive control, on gestation days 15 19. Preputial separation was significantly delayed in 0.87 mg and 8.73 mg AMM-exposed males. AMM-exposed males demonstrated a significant treatment-related increase in incidence and severity of inflammation in the prostate on postnatal day (PND) 120. A dose-dependent increase in epididymal fat masses and prostate foci were grossly visible in AMM-exposed offspring. These results indicate that a short, late prenatal exposure to mixture of chlorotriazine metabolites can cause chronic prostatitis in male LE rats. The mode of action for these effects is presently unclear.

  10. Attenuation of Diabetic Nephropathy in Otsuka Long-Evans Tokushima Fatty (OLETF Rats with a Combination of Chinese Herbs (Tangshen Formula

    Directory of Open Access Journals (Sweden)

    Haojun Zhang

    2011-01-01

    Full Text Available Diabetic nephropathy is one of the most significant microvascular complications in patients with type 2 diabetics. The concise mechanism of diabetic nephropathy is unknown and there is no successful treatment. The objective of study was to investigate effects of Chinese herbs (Tangshen Formula on diabetic nephropathy in Otsuka Long-Evans Tokushima Fatty (OLETF rats. OLETF rats and LETO rats were divided into four groups: LETO control, OLETF diabetics, OLETF diabetics treated with Tangshen Formula, and OLETF diabetics treated with Monopril. Body weight, blood glucose, and 24 h urinary proteins were measured once every four weeks. Blood samples and kidney tissues were obtained for analyses of total cholesterol, triglyceride, whole blood viscosity, plasma viscosity, and pathohistological examination at 36 and 56 weeksrespectively. Untreated OLETF rats displayed diabetic nephropathy over the study period. Treatment of OLETF rats with Tangshen Formula attenuated the increases in blood glucose, body weight, 24 h urinary protein content, serum total cholesterol, whole blood viscosity and plasma viscosity at certain time. Treatment with Tangshen Formula also reduced glomerulosclerotic index and interstitial fibrotic index seen in OLETF rats. In conclusion, Tangshen Formula could attenuate the development of diabetic nephropathy in OLETF rat diabetic model.

  11. A roadmap towards habitable exoplanets by the Blue Dots Initiative

    Science.gov (United States)

    Coudé du Foresto, V.

    2011-11-01

    This paper is an abridged version of the report produced by the Blue Dots initiative, whose activities include the elaboration of a roadmap towards the spectroscopic characterization of habitable exoplanets. The full version of the Blue Dots report can be downloaded at http://www.blue-dots.net/spip.php?article105. While the roadmap will need to be updated regularly, it is expected that the methodology developed within Blue Dots will provide a durable framework for the elaboration of future revisions.

  12. 49 CFR 173.216 - Asbestos, blue, brown or white.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

  13. Aspen biology, community classification, and management in the Blue Mountains

    Science.gov (United States)

    David K. Swanson; Craig L. Schmitt; Diane M. Shirley; Vicky Erickson; Kenneth J. Schuetz; Michael L. Tatum; David C. Powell

    2010-01-01

    Quaking aspen (Populus tremuloides Michx.) is a valuable species that is declining in the Blue Mountains of northeastern Oregon. This publication is a compilation of over 20 years of aspen management experience by USDA Forest Service workers in the Blue Mountains. It includes a summary of aspen biology and occurrence in the Blue Mountains, and a...

  14. 77 FR 55895 - Permanent Closure of Cincinnati Blue Ash Airport

    Science.gov (United States)

    2012-09-11

    ... Federal Aviation Administration Permanent Closure of Cincinnati Blue Ash Airport AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of permanent closure of Cincinnati Blue Ash Airport (ISZ). SUMMARY: The... Cincinnati advising that on August 29, 2012, it was permanently closing Cincinnati Blue Ash Airport (ISZ...

  15. Long-Evans and Sprague-Dawley rats have similar skilled reaching success and limb representations in motor cortex but different movements: some cautionary insights into the selection of rat strains for neurobiological motor research.

    Science.gov (United States)

    Whishaw, Ian Q; Gorny, Bogdan; Foroud, Afra; Kleim, Jeffrey A

    2003-10-17

    Many rat strains are used for neurobiological studies of nervous system function and behavior. The most widely used strain for studies of the neural basis of movement is the out bred, pigmented Long-Evans strain, while the most widely used strains for the study of movement impairments in neurological disease are out bred albino rats, including Sprague-Dawley rats. Although previous research has indicated that there are strain differences in skilled movements displayed by different rat strains, there has been no explicit comparison of the Long-Evans and Sprague-Dawley strains. This was the purpose of the present study. The rats were video recorded as they learned to reach for single food pellets and the video records were subjected to frame-by-frame analysis. Component movements of reaching were scored using a system derived from Eshkol-Wachman Movement Notation (EWMN). The quality of movements was described using Laban Movement Analysis (LMA). Forelimb representations in motor cortex were defined electrophysiologically. Acquisition scores and success in reaching did not differ between the two strains, nor did the topographical representation of the forelimb in motor cortex. Long-Evans and Sprague-Dawley rats did differ in the movements used for reaching and on the quality of their movements. The movements of Sprague-Dawley rats resembled the movements of Long-Evans rats with motor system injury. That rat strains can show both quantitative and qualitative differences in movement is useful for the understanding of the genetic, neural, and behavioral organization of the motor system. The results are also relevant to the question of appropriateness of particular rat strains for studies of neurological diseases and the effects of albinism on motor behavior, and suggest that some of the most widely used rat strains for neurological investigations may be less than appropriate.

  16. Blue emitting organic semiconductors under high pressure

    DEFF Research Database (Denmark)

    Knaapila, Matti; Guha, Suchismita

    2016-01-01

    highlighted by high pressure optical spectroscopy whilst analogous x-ray diffraction experiments remain less frequent. By focusing on a class of blue-emitting π-conjugated polymers, polyfluorenes, this article reviews optical spectroscopic studies under hydrostatic pressure, addressing the impact of molecular......This review describes essential optical and emerging structural experiments that use high GPa range hydrostatic pressure to probe physical phenomena in blue-emitting organic semiconductors including π-conjugated polyfluorene and related compounds. The work emphasizes molecular structure...... and intermolecular self-organization that typically determine transport and optical emission in π-conjugated oligomers and polymers. In this context, hydrostatic pressure through diamond anvil cells has proven to be an elegant tool to control structure and interactions without chemical intervention. This has been...

  17. Blue green component and integrated urban design

    Directory of Open Access Journals (Sweden)

    Stanković Srđan M.

    2016-01-01

    Full Text Available This paper aims to demonstrate the hidden potential of blue green components, in a synergetic network, not as separate systems, like used in past. The innovative methodology of the project Blue Green Dream is presented through examples of good practice. A new approach in the project initiate thoughtful planning and remodeling of the settlement for the modern man. Professional and scientific public is looking for way to create more healthy and stimulating place for living. However, offered integrative solutions still remain out of urban and architectural practice. Tested technologies in current projects confirmed measurability of innovative approaches and lessons learned. Scientific and professional contributions are summarized in master's and doctoral theses that have been completed or are in process of writing.

  18. Measuring Blue Space Visibility and ‘Blue Recreation’ in the Everyday Lives of Children in a Capital City

    Science.gov (United States)

    Pearson, Amber L.; Bottomley, Ross; Chambers, Tim; Thornton, Lukar; Stanley, James; Smith, Moira; Barr, Michelle; Signal, Louise

    2017-01-01

    Blue spaces (water bodies) may promote positive mental and physical health through opportunities for relaxation, recreation, and social connections. However, we know little about the nature and extent of everyday exposure to blue spaces, particularly in settings outside the home or among children, nor whether exposure varies by individual or household characteristics. Wearable cameras offer a novel, reliable method for blue space exposure measurement. In this study, we used images from cameras worn over two days by 166 children in Wellington, New Zealand, and conducted content and blue space quantification analysis on each image (n = 749,389). Blue space was identified in 24,721 images (3.6%), with a total of 23 blue recreation events. Visual exposure and participation in blue recreation did not differ by ethnicity, weight status, household deprivation, or residential proximity to the coastline. Significant differences in both visual exposure to blue space and participation in blue recreation were observed, whereby children from the most deprived schools had significantly higher rates of blue space exposure than children from low deprivation schools. Schools may be important settings to promote equitable blue space exposures. Childhood exposures to blue space may not follow the expected income inequality trends observed among adults. PMID:28587134

  19. Experiencing Blues at the Crossroads: A Place-Based Method for Teaching the Geography of Blues Culture

    Science.gov (United States)

    Strait, John

    2012-01-01

    This article offers a pedagogical module that explores the geography of blues culture across the Mississippi Delta. By focusing on blues culture, rather than simply blues music itself, this project provides a forum for understanding the broader geographical conditions from which this musical form emerged. This module utilizes place-based…

  20. Measuring Blue Space Visibility and 'Blue Recreation' in the Everyday Lives of Children in a Capital City.

    Science.gov (United States)

    Pearson, Amber L; Bottomley, Ross; Chambers, Tim; Thornton, Lukar; Stanley, James; Smith, Moira; Barr, Michelle; Signal, Louise

    2017-05-26

    Blue spaces (water bodies) may promote positive mental and physical health through opportunities for relaxation, recreation, and social connections. However, we know little about the nature and extent of everyday exposure to blue spaces, particularly in settings outside the home or among children, nor whether exposure varies by individual or household characteristics. Wearable cameras offer a novel, reliable method for blue space exposure measurement. In this study, we used images from cameras worn over two days by 166 children in Wellington, New Zealand, and conducted content and blue space quantification analysis on each image ( n = 749,389). Blue space was identified in 24,721 images (3.6%), with a total of 23 blue recreation events. Visual exposure and participation in blue recreation did not differ by ethnicity, weight status, household deprivation, or residential proximity to the coastline. Significant differences in both visual exposure to blue space and participation in blue recreation were observed, whereby children from the most deprived schools had significantly higher rates of blue space exposure than children from low deprivation schools. Schools may be important settings to promote equitable blue space exposures. Childhood exposures to blue space may not follow the expected income inequality trends observed among adults.

  1. Cooperation Determinants in the Atlantic Blue Economy

    OpenAIRE

    Pinto, Hugo

    2014-01-01

    Maritime and marine activities are getting significant attention from European policy as a domain that encompasses economic sectors of traditional relevance and new ones of fast growth. This short communication presents the results of a survey applied to maritime and marine organizations in Portugal, Spain, Ireland and United Kingdom. Innovation, human capital and social capital are dimensions that deserve attention in the creation and consolidation of the Blue economy. The empirical study us...

  2. Genetic heterogeneity among blue-cone monochromats

    Energy Technology Data Exchange (ETDEWEB)

    Nathans, J.; Maumenee, I.H.; Zrenner, E.; Sadowski, B.; Sharpe, L.T.; Lewis, R.A.; Hansen, E.; Rosenberg, T.; Schwartz, M.; Heckenlively, J.R.; Traboulsi, E.; Klingaman, R.; Bech-Hansen, N.T.; LaRoche, G.R.; Pagon, R.A.; Murphey, W.H.; Weleber, R.G.

    1993-11-01

    Thirty-three unrelated subjects with blue-cone monochromacy or closely related variants of blue-cone monochromacy were examined for rearrangements in the tandem array of genes encoding the red- and green-cone pigments. In 24 subjects, eight genotypes were found that would be predicted to eliminate the function of all of the genes within the array. As observed in an earlier study, the rearrangements involve either deletion of a locus control region adjacent to the gene array or loss of function via homologous recombination and point mutation. One inactivating mutation, Cy[sup 203]-to-Arg, was found in 15 probands who carry single genes and in both visual pigment genes in one subject whose array has two genes. This mutation was also found in at least one of the visual pigment genes in one subject whose array has multiple genes and in 2 of 321 control subjects, suggesting that preexisting Cys[sup 203]-to-Arg mutations constitute a reservoir of chromosomes that are predisposed to generate blue-cone-monochromat genotypes by unequal homologous recombination and/or gene conversion. Two other point mutations were identified: (a) Arg[sup 247]-to-Ter in one subject with a single red-pigment gene and (b) Pro[sup 307]-to-Leu in one subject with a single 5[prime] red-3[prime] green hybrid gene. The observed heterogeneity of genotypes points to the existence of multiple one- and two-step mutational pathways to blue-cone monochromacy. 28 refs., 9 figs., 2 tabs.

  3. Reciproc blue: the new generation of reciprocation

    OpenAIRE

    Ghassan Yared

    2017-01-01

    Aim: This article introduces the Reciproc® blue system and describes the clinical technique with and without creating a glide path. Methodology: The concept of canal preparation with only one mechanical instrument used in reciprocation was introduced several years ago. Studies and clinical research have shown the efficiency and the safety of the Reciproc® instrument in the preparation of the majority of canals without creating a glide path, and in the retreatment procedure. Results: Rec...

  4. FROM CIRCULAR ECONOMY TO BLUE ECONOMY

    Directory of Open Access Journals (Sweden)

    Iustin-Emanuel, ALEXANDRU

    2014-11-01

    Full Text Available Addressing the subject of this essay is based on the background ideas generated by a new branch of science - Biomimicry. According to European Commissioner for the Environment, "Nature is the perfect model of circular economy". Therefore, by imitating nature, we are witnessing a process of cycle redesign: production-consumption-recycling. The authors present some reflections on the European Commission's decision to adopt after July 1, 2014 new measures concerning the development of more circular economies. Starting from the principles of Ecolonomy, which is based on the whole living paradigm, this paper argues for the development within each economy of entrepreneurial policies related to the Blue economy. In its turn, Blue economy is based on scientific analyses that identify the best solutions in a business. Thus, formation of social capital will lead to healthier and cheaper products, which will stimulate entrepreneurship. Blue economy is another way of thinking economic practice and is a new model of business design. It is a healthy, sustainable business, designed for people. In fact, it is the core of the whole living paradigm through which, towards 2020, circular economy will grow more and more.

  5. Automated detection of Antarctic blue whale calls.

    Science.gov (United States)

    Socheleau, Francois-Xavier; Leroy, Emmanuelle; Pecci, Andres Carvallo; Samaran, Flore; Bonnel, Julien; Royer, Jean-Yves

    2015-11-01

    This paper addresses the problem of automated detection of Z-calls emitted by Antarctic blue whales (B. m. intermedia). The proposed solution is based on a subspace detector of sigmoidal-frequency signals with unknown time-varying amplitude. This detection strategy takes into account frequency variations of blue whale calls as well as the presence of other transient sounds that can interfere with Z-calls (such as airguns or other whale calls). The proposed method has been tested on more than 105 h of acoustic data containing about 2200 Z-calls (as found by an experienced human operator). This method is shown to have a correct-detection rate of up to more than 15% better than the extensible bioacoustic tool package, a spectrogram-based correlation detector commonly used to study blue whales. Because the proposed method relies on subspace detection, it does not suffer from some drawbacks of correlation-based detectors. In particular, it does not require the choice of an a priori fixed and subjective template. The analytic expression of the detection performance is also derived, which provides crucial information for higher level analyses such as animal density estimation from acoustic data. Finally, the detection threshold automatically adapts to the soundscape in order not to violate a user-specified false alarm rate.

  6. Synchrotron powder diffraction on Aztec blue pigments

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez del Rio, M. [European Synchrotron Radiation Facility, B.P. 220, Grenoble Cedex (France); Gutierrez-Leon, A.; Castro, G.R.; Rubio-Zuazo, J. [Spanish CRG Beamline at the European Synchrotron Radiation Facility, SpLine, B.P. 220, Grenoble Cedex (France); Solis, C. [Universidad Nacional Autonoma de Mexico, Instituto de Fisica, Mexico, D.F. (Mexico); Sanchez-Hernandez, R. [INAH Subdireccion de Laboratorios y Apoyo Academico, Mexico, D.F. (Mexico); Robles-Camacho, J. [INAH Centro Regional Michoacan, Morelia, Michoacan (Mexico); Rojas-Gaytan, J. [INAH Direccion de Salvamento Arqueologico, Naucalpan de Juarez (Mexico)

    2008-01-15

    Some samples of raw blue pigments coming from an archaeological rescue mission in downtown Mexico City have been characterized using different techniques. The samples, some recovered as a part of a ritual offering, could be assigned to the late Aztec period (XVth century). The striking characteristic of these samples is that they seem to be raw pigments prior to any use in artworks, and it was possible to collect a few {mu}g of pigment after manual grain selection under a microscopy monitoring. All pigments are made of indigo, an organic colorant locally known as anil or xiuhquilitl. The colorant is always found in combination with an inorganic matrix, studied by powder diffraction. In one case the mineral base is palygorskite, a rare clay mineral featuring micro-channels in its structure, well known as the main ingredient of the Maya blue pigment. However, other samples present the minerals sepiolite (a clay mineral of the palygorskite family) and calcite. Another sample contains barite, a mineral never reported in prehispanic paints. We present the results of characterization using high resolution powder diffraction recorded at the European Synchrotron Radiation Facility (BM25A, SpLine beamline) complemented with other techniques. All of them gave consistent results on the composition. A chemical test on resistance to acids was done, showing a high resistance for the palygorskite and eventually sepiolite compounds, in good agreement with the excellent resistance of the Maya blue. (orig.)

  7. The Blue Comet: A Railroad's Astronomical Heritage

    Science.gov (United States)

    Rumstay, Kenneth S.

    2009-01-01

    Between 1929 February 21 and 1941 September 27, the Central New Jersey Railroad operated a luxury passenger train between Jersey City and Atlantic City. Named The Blue Comet, the locomotive, tender, and coaches sported a unique royal blue paint scheme designed to evoke images of celestial bodies speeding through space. Inside each car were etched window panes and lampshades featuring stars and comets. And each coach sported the name of a famous comet on its side; these comets were of course named for their discoverers. Some of the astronomers honored in this unique fashion remain famous to this day, or at least their comets do. The names D'Arrest, Barnard, Encke, Faye, Giacobini, Halley, Olbers, Temple, Tuttle, and Westphal are familiar ones. But Biela, Brorsen, deVico, Spitaler, and Winnecke have now largely faded into obscurity; their stories are recounted here. Although more than sixty years have elapsed since its last run, The Blue Comet, perhaps the most famous passenger train in American history, lives on in the memories of millions of passengers and railfans. This famous train returned to the attention of millions of television viewers on the evening of 2007 June 3, in an episode of the HBO series The Sopranos. This work was supported by a faculty development grant from Valdosta State University.

  8. Patent blue dye in lymphaticovenular anastomosis.

    Science.gov (United States)

    Yap, Yan Lin; Lim, Jane; Shim, Timothy W H; Naidu, Shenthilkumar; Ong, Wei Chen; Lim, Thiam Chye

    2009-08-01

    Lymphaticovenular anastomosis (LVA) has been described as a treatment of chronic lymphoedema. This microsurgical technique is new and technically difficult. The small caliber and thin wall lymphatic vessels are difficult to identify and easily destroyed during the dissection. We describe a technique of performing lymphaticovenular anastomosis with patent blue dye enhancement. Our patient is a 50-year-old lady who suffers from chronic lymphoedema of the upper limb after mastectomy and axillary clearance for breast cancer 8 years ago. Patent blue dye is injected subdermally and is taken up readily by the draining lymphatic channels. This allows for easy identification of their course. The visualisation of the lumen of the lymphatic vessel facilitates microsurgical anastomosis. The patency of the anastomosis is also demonstrated by the dynamic pumping action of the lymphatic within the vessels. Patent blue dye staining during lymphaticovenular anastomosis is a simple, effective and safe method for mapping suitable subdermal lymphatics, allowing for speedier dissection of the lymphatic vessels intraoperatively. This technique also helps in the confirmation of the success of the lymphaticovenular anastomosis.

  9. 'Blue Whale Challenge': A Game or Crime?

    Science.gov (United States)

    Mukhra, Richa; Baryah, Neha; Krishan, Kewal; Kanchan, Tanuj

    2017-11-11

    A bewildering range of games are emerging every other day with newer elements of fun and entertainment to woo youngsters. Games are meant to reduce stress and enhance the cognitive development of children as well as adults. Teenagers are always curious to indulge in newer games; and e-gaming is one such platform providing an easy access and quicker means of entertainment. The particular game challenge which has taken the world by storm is the dangerous "Blue Whale Challenge" often involving vulnerable teenagers. The Blue Whale Challenge is neither an application nor internet based game but the users get a link through social media chat groups to enter this "deadly" challenge game. This probably is the only game where the participant has to end his/her life to complete the game. The innocent teenagers are being targeted based on their depressed psychology and are coercively isolated from their social milieux on the pretext of keeping the challenges confidential. To add to the woes, no option is offered to quit the challenge even if the contender is unable to complete the challenge. Blue Whale Challenge in its sheer form could be seen as an illegal, unethical and inhumane endeavor in our present society. The present communication discusses the severe effects of the game on teenagers, the ethical concerns involved and the preventive measures necessary to curb it.

  10. Postnatal blues: a risk factor for postnatal depression.

    Science.gov (United States)

    Henshaw, C; Foreman, D; Cox, J

    2004-01-01

    Postnatal blues have been regarded as brief, benign and without clinical significance. However, several studies have proposed a link between blues and subsequent depression but have methodological problems. We report a prospective, controlled study of postpartum women with severe blues which uses systematically devised and validated instruments for that purpose which tests the hypothesis that severe blues increases the risk of depression in the six months following childbirth. 206 first-time mothers were recruited in late pregnancy. Blues status was defined using the Blues Questionnaire and those with severe blues and their controls who had no blues (matched for age, marital status and social class) were followed for 6 months with postal Edinburgh Postnatal Depression Scale. RDC diagnoses were made following SADS-L interview at the end of the protocol. Backwards stepwise Cox regression analysis found severe blues and past history of depression to be independent predictors each raising the risk by almost 3 times. Depression in those with severe blues onset sooner after delivery and lasted longer. The difference was largely accounted for by major depression. Severe postpartum blues are identified as an independent risk factor for subsequent postpartum depression. Screening and intervention programs could be devised.

  11. Determination of carrageenan by means of photometric titration with Methylene Blue and Toluidine Blue dyes.

    Science.gov (United States)

    Ziółkowska, Dorota; Kaniewska, Agnieszka; Lamkiewicz, Jan; Shyichuk, Alexander

    2017-06-01

    A new approach to carrageenan quantitation was described. The method consists in titration of carrageenan solution by Methylene Blue dye or Toluidine Blue dye solution until a certain absorbance value. The optimal wavelengths are 660nm and 640nm when titrating with Methylene Blue dye and Toluidine Blue dye, respectively. Rectilinear calibration plots (R2>0.996) provide carrageenan determination in the concentration range from 2 to 60mg/L with relative standard deviation from 1 to 5%. The proposed method is simple and feasible in use due to optical dip probe providing in situ absorbance measurements. The proposed way of end-point recognition as pre-set voltage is applicable with any automatic titrator. The method was tested on model jelly dessert sachet. No interference was registered from typical ingredients of jellies such as sucrose, citric acid, sodium citrate, malic acid, potassium sorbate as well as blue colorant. The neutral polysaccharides such as guar gum and locust bean gum have insignificant interference when their content is fivefold as compared to that of carrageenan. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Blue-Green Solutions in Urban Development

    Science.gov (United States)

    Karlsson, Caroline; Kalantari, Zahra

    2017-04-01

    With the ongoing urbanisation and increasing pressure for new housing and infrastructure, the nexus of developing compact, energy-efficient and yet liveable and sustainable cities is urgent to address. In this context, blue-green spaces and related ecosystem services (ES) are critical resources that need to be integrated in policy and planning of urban. Among the ES provided by blue-green spaces, regulating ES such as water retention and purification are particularly important in urban areas, affecting water supply and quality, related cultural ES and biodiversity, as well as cities potential to adapt to climate change. Blue-green infrastructure management is considered a sustainable way to reducing negative effects of urbanisation, such as decreasing flood risks, as well as adapting to climate change for example by controlling increasing flood and drought risks. Blue-green infrastructure management can for example create multifunctional surfaces with valuable environmental and social functions and generally handle greenways and ecological networks as important ecosystem service components, for example for stormwater regulation in a sustainable urban drainage system. The Norrström drainage basin (22,000 km2) is a large demonstrator for Blue-green infrastructure management. Both urbanisation and agriculture are extensive within this basin, which includes the Swedish capital Stockholm and is part of the fertile Swedish belt. Together, the relatively high population density combined with agricultural and industrial activities in this region imply large eutrophication and pollution pressures, not least transferred through storm runoff to both inland surface waters and the coastal waters of the Baltic Sea. The ecosystems of this basin provide highly valued but also threatened services. For example, Lake Mälaren is the single main freshwater supply for the Swedish capital Stockholm, as well as a key nutrient retention system that strongly mitigates waterborne nutrient

  13. Rare sugar D-psicose prevents progression and development of diabetes in T2DM model Otsuka Long-Evans Tokushima Fatty rats

    Directory of Open Access Journals (Sweden)

    Hossain A

    2015-01-01

    Full Text Available Akram Hossain,1,2 Fuminori Yamaguchi,1 Kayoko Hirose,1 Toru Matsunaga,3 Li Sui,1 Yuko Hirata,1 Chisato Noguchi,1 Ayako Katagi,1 Kazuyo Kamitori,1 Youyi Dong,1 Ikuko Tsukamoto,4 Masaaki Tokuda11Department of Cell Physiology, Faculty of Medicine, Kagawa University, Ikenobe, Miki, Kagawa, Japan; 2Research and Development, Matsutani Chemical Industry Co., Ltd., Kitaitami, Itami-shi, Hyogo, Japan; 3Division of Hospital Pathology, Faculty of Medicine, Kagawa University, Ikenobe, Miki, Kagawa, Japan; 4Department of Pharmaco-Bio-Informatics, Faculty of Medicine, Kagawa University, Ikenobe, Miki, Kagawa, JapanBackground: The fundamental cause of overweight and obesity is consumption of calorie-dense foods. We have introduced a zero-calorie sweet sugar, D-psicose (D-allulose, a rare sugar that has been proven to have strong antihyperglycemic and antihyperlipidemic effects, and could be used as a replacement of natural sugar for the obese and diabetic subjects.Aim: Above mentioned efficacy of D-psicose (D-allulose has been confirmed in our previous studies on type 2 diabetes mellitus (T2DM model Otsuka Long-Evans Tokushima Fatty (OLETF rats with short-term treatment. In this study we investigated the long-term effect of D-psicose in preventing the commencement and progression of T2DM with the mechanism of preservation of pancreatic β-cells in OLETF rats.Methods: Treated OLETF rats were fed 5% d-psicose dissolved in water and control rats only water. Nondiabetic control rats, Long-Evans Tokushima Otsuka (LETO, were taken as healthy control and fed water. To follow the progression of diabetes, periodic measurements of blood glucose, plasma insulin, and body weight changes were continued till sacrifice at 60 weeks. Periodic in vivo body fat mass was measured. On sacrifice, pancreas, liver, and abdominal adipose tissues were collected for various staining tests.Results: D-Psicose prevented the commencement and progression of T2DM till 60 weeks through the

  14. Exercise initiated after the onset of insulin resistance improves trabecular microarchitecture and cortical bone biomechanics of the tibia in hyperphagic Otsuka Long Evans Tokushima Fatty rats.

    Science.gov (United States)

    Ortinau, Laura C; Linden, Melissa A; Dirkes, Rebecca K; Rector, R Scott; Hinton, Pamela S

    2017-10-01

    The present study extends our previous findings that exercise, which prevents the onset of insulin resistance and type 2 diabetes (T2D), also prevents the detrimental effects of T2D on whole-bone and tissue-level strength. Our objective was to determine whether exercise improves bone's structural and material properties if insulin resistance is already present in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat. The OLETF rat is hyperphagic due to a loss-of-function mutation in cholecystokinin-1 receptor (CCK-1 receptor), which leads to progressive obesity, insulin resistance and T2D after the majority of skeletal growth is complete. Because exercise reduces body mass, which is a significant determinant of bone strength, we used a body-mass-matched caloric-restricted control to isolate body-mass-independent effects of exercise on bone. Eight-wk old, male OLETF rats were fed ad libitum until onset of hyperglycemia (20weeks of age), at which time they were randomly assigned to three groups: ad libitum fed, sedentary (O-SED); ad libitum fed, treadmill running (O-EX); or, sedentary, mild caloric restriction to match body mass of O-EX (O-CR). Long-Evans Tokushima Otsuka rats served as the normophagic, normoglycemic controls (L-SED). At 32weeks of age, O-SED rats had T2D as evidenced by hyperglycemia and a significant reduction in fasting insulin compared to OLETFs at 20weeks of age. O-SED rats also had reduced total body bone mineral content (BMC), increased C-terminal telopeptide of type I collagen (CTx)/tartrate resistant acid phosphatase isoform 5b (TRAP5b), decreased N-terminal propeptide of type I procollagen (P1NP), reduced percent cancellous bone volume (BV/TV), trabecular number (Tb.N) and increased trabecular separation (Tb.Sp) and structural model index (SMI) of the proximal tibia compared to L-SED. T2D also adversely affected biomechanical properties of the tibial diaphysis, and serum sclerostin was increased and β-catenin, runt-related transcription factor

  15. Dissociable effects of the d- and l- enantiomers of govadine on the disruption of prepulse inhibition by MK-801 and apomorphine in male Long-Evans rats.

    Science.gov (United States)

    Lins, Brittney R; Marks, Wendie N; Phillips, Anthony G; Howland, John G

    2017-04-01

    The search for novel antipsychotic drugs to treat schizophrenia is driven by the poor treatment efficacy, serious side effects, and poor patient compliance of current medications. Recently, a class of compounds known as tetrahydroprotoberberines, which includes the compound d,l-govadine, have shown promise in preclinical rodent tests relevant to schizophrenia. To date, the effect of govadine on prepulse inhibition (PPI), a test for sensorimotor gating commonly used to assess the effects of putative treatments for schizophrenia, has not been determined. The objective of the present study was to determine the effects of each enantiomer of govadine (d- and l-govadine) on PPI alone and its disruption by the distinct pharmacological compounds apomorphine and MK-801. Male Long-Evans rats were treated systemically with d- or l-govadine and apomorphine or MK-801 prior to PPI. The PPI paradigm employed here included parametric manipulations of the prepulse intensity and the interval between the prepulse and pulse. Acute MK-801 (0.15 mg/kg) significantly increased the startle response to startle pulses alone, while both MK-801 and apomorphine (0.2 mg/kg) significantly increased reactivity to prepulse-alone trials. Both MK-801 and apomorphine disrupted PPI. In addition, d-govadine alone significantly disrupted PPI in the apomorphine experiment. Pretreatment with l-, but not d-, govadine (1.0 mg/kg) blocked the effect of apomorphine and MK-801 on PPI. Treatment of rats with l-govadine alone (0.3, 1.0, 3.0 mg/kg) also dose-dependently increased PPI. Given the high affinity of l-govadine for dopamine D2 receptors, these results suggest that further testing of l-govadine as an antipsychotic is warranted.

  16. Altered sexually dimorphic nucleus of the preoptic area (SDN-POA) volume in adult Long-Evans rats by dietary soy phytoestrogens.

    Science.gov (United States)

    Lund, T D; Rhees, R W; Setchell, K D; Lephart, E D

    2001-09-28

    Naturally occurring estrogen-like molecules in plants (phytoestrogens), present via soy, in animal diets can alter morphology and physiology in rodents. Phytoestrogens have the ability to bind estrogen receptors and exert many of the biological responses evoked by physiological estrogens. This study characterized the effects of dietary phytoestrogens on the expression of body and prostate weight, circulating testosterone and estradiol levels, puberty onset, vaginal cyclicity, and volume of the sexually dimorphic nucleus of the preoptic area (SDN-POA) in Long-Evans rats. Using different experimental protocols, animals were fed either a phytoestrogen-rich (Phyto-600) or a phytoestrogen-free (Phyto-free) diet. Animals fed the Phyto-600 diet displayed significantly decreased body weights (in males and females), prostate weights and delayed puberty in females compared to that of animals fed the Phyto-free diet. Circulating testosterone or estradiol levels in males or estrous cyclicity were not altered by the diets. The volume of the SDN-POA was significantly altered by a change in diet at 80 days of age where one-half of the males or females fed the Phyto-600 diet (from birth) were switched to the Phyto-free diet until 120 days of age. Males initially fed a Phyto-600 diet but changed to a Phyto-free diet had significantly smaller SDN-POA volumes compared to males fed the Phyto-600 diet (long-term). These data suggest that consumption of phytoestrogens via a soy diet, significantly: (1) decreases body and prostate weight, (2) delays puberty onset, and (3) alters SDN-POA volumes during adulthood.

  17. Decreased sexual motivation and heightened anxiety in male Long-Evans rats are correlated with the memory for a traumatic event.

    Science.gov (United States)

    Hawley, Wayne R; Grissom, Elin M; Belkin, Mark N; James, Thomas F; Dohanich, Gary P

    2013-05-01

    Individuals suffering from posttraumatic stress disorder (PTSD) frequently report disturbances in sexual functioning in addition to alterations in their affective behaviors. Notably, maladaptive cognitions and dysfunctional behaviors are perpetuated by the emergence of the intrusive thoughts that characterize the disorder. In rats, reminders of a traumatic event designed to simulate intrusive thoughts are associated with impairments in affective, social, and sexual behaviors. The current study examined the relationship between the memory for a traumatic event and changes in sexual and affective behaviors in male Long-Evans rats (N = 36). The trauma featured a combination stressor consisting of simultaneous exposure to a footshock and the odor of soiled cat litter. Memory for the trauma was reactivated by re-exposures to the context of the trauma in the absence of stressors and confirmed by assessing the percentage of time spent freezing. Following the second and final reminder, traumatized males exhibited reduced sexual motivation and increased anxiety, signified by longer latencies to achieve their first mount on a post-stress test of sexual behavior, and longer latencies to begin feeding in a novel environment, respectively. Correlational analyses revealed that decreased sexual motivation and heightened anxiety were predicted by the memory for the trauma as indicated by the time spent freezing during the re-exposures. The findings from the current study have implications for understanding the relationship between stress and sexual functioning and indicate that the impairments in sexual behavior that often occur in individuals with PTSD may be impacted by their memory for the trauma.

  18. Effect of magnesium ion supplementation on obesity and diabetes mellitus in Otsuka Long-Evans Tokushima Fatty (OLETF) rats under excessive food intake.

    Science.gov (United States)

    Nagai, Noriaki; Ito, Yoshimasa

    2013-01-01

    Several epidemiologic studies have found that magnesium ion (Mg²⁺) is related to obesity and type 2 diabetes mellitus. However, there have been almost no reports on the effects of a combination of excessive food intake and Mg²⁺ supplementation on metabolic syndrome and various blood tests values for diabetes mellitus. In this study, we investigated changes in body weight and blood test values for diabetes mellitus of Otsuka Long-Evans Tokushima Fatty (OLETF) rats, a model for human type 2 diabetes mellitus via metabolic syndrome, under conditions of combined excessive food intake and Mg²⁺ supplementation. The rats received Mg²⁺ supplementation by drinking magnesium water (Mg²⁺; 200 mg/l). No significant differences were observed in the levels of food or water intake between OLETF rats drinking purified water (PW) or magnesium water (MW). Type 2 diabetes mellitus with metabolic syndrome developed at 30 weeks of age, and the body weights and plasma insulin levels of OLETF rats at 60 weeks of age were lower than those of normal rats. The plasma glucose (PG) levels in 38-week-old OLETF rats drinking MW were significantly lower than in those of rats drinking PW, while the body weights and the levels of triglycerides (TG) and insulin of 38-week-old MW-drinking OLETF rats were significantly higher than those of their PW-drinking counterparts. On the other hand, the decreases in body weight and insulin levels in 60-week-old OLETF rats were suppressed by MW supplementation. The present study demonstrates that Mg²⁺ supplementation delays the development of diabetes mellitus in OLETF rats under conditions of excessive food intake. In addition, obesity and high blood TG levels were observed in OLETF rats receiving Mg²⁺ supplementation in conjunction with excessive food intake.

  19. The effect of atrazine administered by gavage or in diet on the LH surge and reproductive performance in intact female Sprague-Dawley and Long Evans rats.

    Science.gov (United States)

    Foradori, Chad D; Sawhney Coder, Prägati; Tisdel, Merrill; Yi, Kun Don; Simpkins, James W; Handa, Robert J; Breckenridge, Charles B

    2014-06-01

    Atrazine (ATR) blunts the hormone-induced luteinizing hormone (LH) surge, when administered by gavage (50-100 mg/kg/day for 4 days), in ovariectomized rats. In this study, we determined if comparable doses delivered either by gavage (bolus dose) or distributed in diet would reduce the LH surge and subsequently affect fertility in the intact female rat. ATR was administered daily to intact female Sprague-Dawley (SD) or Long Evans (LE) rats by gavage (0, 0.75 1.5, 3, 6, 10, 12, 50, or 100 mg/kg/day) or diet (0, 30, 100, 160, 500, 660, or 1460 ppm) during one complete 4-day estrous cycle, starting on day of estrus. Estrous status, corpora lutea, ova, and LH plasma concentrations were evaluated. A second cohort of animals was mated on the fourth treatment day. Fertility metrics were assessed on gestational day 20. A higher portion of LE rats had asynchronous estrous cycles when compared to SD rats both during pretreatment and in response to ATR (≥50 mg/kg). In contrast, bolus doses of ATR (≥50 mg/kg) inhibited the peak and area under the curve for the preovulatory LH surge in SD but not LE animals. Likewise, only bolus-treated SD, not LE, rats displayed reduced mean number of corpora lutea and ova. There were no effects of ATR administered by gavage on mating, gravid number, or fetus number. Dietary administration had no effect on any reproductive parameter measured. These findings indicate that short duration, high-bolus doses of ATR can inhibit the LH surge and reduce the number of follicles ovulated; however, dietary administration has no effect on any endocrine or reproductive outcomes. © 2014 Wiley Periodicals, Inc.

  20. The Effect of Atrazine Administered by Gavage or in Diet on the LH Surge and Reproductive Performance in Intact Female Sprague-Dawley and Long Evans Rats

    Science.gov (United States)

    Foradori, Chad D; Sawhney Coder, Prägati; Tisdel, Merrill; Yi, Kun Don; Simpkins, James W; Handa, Robert J; Breckenridge, Charles B

    2014-01-01

    Atrazine (ATR) blunts the hormone-induced luteinizing hormone (LH) surge, when administered by gavage (50–100 mg/kg/day for 4 days), in ovariectomized rats. In this study, we determined if comparable doses delivered either by gavage (bolus dose) or distributed in diet would reduce the LH surge and subsequently affect fertility in the intact female rat. ATR was administered daily to intact female Sprague-Dawley (SD) or Long Evans (LE) rats by gavage (0, 0.75 1.5, 3, 6, 10, 12, 50, or 100 mg/kg/day) or diet (0, 30, 100, 160, 500, 660, or 1460 ppm) during one complete 4-day estrous cycle, starting on day of estrus. Estrous status, corpora lutea, ova, and LH plasma concentrations were evaluated. A second cohort of animals was mated on the fourth treatment day. Fertility metrics were assessed on gestational day 20. A higher portion of LE rats had asynchronous estrous cycles when compared to SD rats both during pretreatment and in response to ATR (≥50 mg/kg). In contrast, bolus doses of ATR (≥50 mg/kg) inhibited the peak and area under the curve for the preovulatory LH surge in SD but not LE animals. Likewise, only bolus-treated SD, not LE, rats displayed reduced mean number of corpora lutea and ova. There were no effects of ATR administered by gavage on mating, gravid number, or fetus number. Dietary administration had no effect on any reproductive parameter measured. These findings indicate that short duration, high-bolus doses of ATR can inhibit the LH surge and reduce the number of follicles ovulated; however, dietary administration has no effect on any endocrine or reproductive outcomes PMID:24831581

  1. GABA Uptake Inhibition Reduces In Vivo Extraction Fraction in the Ventral Tegmental Area of Long Evans Rats Measured by Quantitative Microdialysis Under Transient Conditions.

    Science.gov (United States)

    Zandy, Shannon L; Gonzales, Rueben A

    2018-02-01

    Inhibitory signaling in the ventral tegmental area (VTA) is involved in the mechanism of action for many drugs of abuse. Although drugs of abuse have been shown to alter extracellular γ-aminobutyric acid (GABA) concentration in the VTA, knowledge on how uptake mechanisms are regulated in vivo is limited. Quantitative (no-net-flux) microdialysis is commonly used to examine the extracellular concentration and clearance of monoamine neurotransmitters, however it is unclear whether this method is sensitive to changes in clearance for amino acid neurotransmitters such as GABA. The purpose of this study was to determine whether changes in GABA uptake are reflected by in vivo extraction fraction within the VTA. Using quantitative (no-net-flux) microdialysis adapted for transient conditions, we examined the effects of local perfusion with the GABA uptake inhibitor, nipecotic acid, in the VTA of Long Evans rats. Basal extracellular GABA concentration and in vivo extraction fraction were 44.4 ± 1.9 nM (x-intercepts from 4 baseline regressions using a total of 24 rats) and 0.19 ± 0.01 (slopes from 4 baseline regressions using a total of 24 rats), respectively. Nipecotic acid (50 μM) significantly increased extracellular GABA concentration to 170 ± 4 nM and reduced in vivo extraction fraction to 0.112 ± 0.003. Extraction fraction returned to baseline following removal of nipecotic acid from the perfusate. Conventional microdialysis substantially underestimated the increase of extracellular GABA concentration due to nipecotic acid perfusion compared with that obtained from the quantitative analysis. Together, these results show that inhibiting GABA uptake mechanisms within the VTA alters in vivo extraction fraction measured using microdialysis and that in vivo extraction fraction may be an indirect measure of GABA clearance.

  2. El polisulfuro de calcio en el manejo de la moniliasis Moniliophthora roreri (Cif & Par. Evans et al. del cacao Theobroma cacao L.

    Directory of Open Access Journals (Sweden)

    Sandra Ramírez González

    2011-05-01

    Full Text Available El cacao es severamente afectado por el hongo Moniliophthora roreri (Cif & Par. Evans et al., el cual daña los frutos y puede ocasionar pérdidas totales y su control es principalmente cultural. El objetivo del trabajo es determinar la efectividad del polisulfuro de calcio (PC como alternativa para su manejo. El patógeno fue aislado y cultivado in vitro y se evaluó el efecto del PC sobre la germinación y formación de conidias; en el campo, sobre frutos se asperjó PC antes y después de la inoculación con M. roreri y se determinó la incidencia e índices de severidad interna y externa. En una plantación de cacao se asperjó PC y se determinó su incidencia y producción. El PC in vitro inhibió el crecimiento y la formación de conidias; la aplicación de PC antes o después de la inoculación artificial con M. roreri sobre frutos inhibe completamente el desarrollo de la enfermedad; con aspersiones de PC en plantaciones de cacao la incidencia de la enfermedad fue de 0,53%, mientras que fue de 21% con manejo cultural y del 69,6% con testigo de inoculación natural; la producción de cacao seco/año fue de un 90,6% más con PC que en el testigo de inoculación natural, por lo que resulta viable integrar PC en el manejo deM. roreri.

  3. Mapping and characterization of quantitative trait loci for non-insulin-dependent diabetes mellitus with an improved genetic map in the Otsuka Long-Evans Tokushima fatty rat.

    Science.gov (United States)

    Wei, S; Wei, K; Moralejo, D H; Ogino, T; Koike, G; Jacob, H J; Sugiura, K; Sasaki, Y; Yamada, T; Matsumoto, K

    1999-03-01

    The Otsuka Long-Evans Tokushima Fatty (OLETF) rat is an animal model for obese-type, non-insulin-dependent diabetes mellitus (NIDDM) in humans. We have previously reported four quantitative trait loci (QTLs) responsible for NIDDM on Chromosomes (Chrs) 7, 14, 8, and 11 (Nidd1-4/of for Non-insulin-dependent diabetes1-4/oletf) by a whole-genome search in 160 F2 progenies obtained by mating the OLETF and the Fischer-344 (F344) rats. Our present investigation was designed to identify and characterize novel QTLs affecting NIDDM by performing a genome-wide linkage analysis of genes for glucose levels and body weight and analysis for gene-to-gene and gene-to-body-weight interactions on an improved genetic map with a set of 382 informative markers in the 160 F2 progenies. We have identified seven novel QTLs on rat Chrs 1 (Nidd5 and 6/of), 5 (Nidd7/of), 9 (Nidd8/of), 12 (Nidd9/of), 14 (Nidd10/of) and 16 (Nidd11/of) which, together with the Nidd1-4/of, account for a total of approximately 60% and approximately 75% of the genetic variance of the fasting and postprandial glucose levels, respectively, in the F2. While the OLETF allele corresponds with increased glucose levels as expected for the novel QTLs except Nidd8 and 9/of, the Nidd8 and 9/of exhibit heterosis: heterozygotes showing significantly higher glucose levels than OLETF or F344 homozygotes. There are epistatic interactions between Nidd1 and 10/of and between Nidd2 and 8/of. Additionally, our results indicated that the Nidd6 and 11/of could also contribute to an increase of body weight, and that the other five QTLs could show no linkage with body weight, but Nidd8,9, and 10/of have an interaction with body weight.

  4. An iron-deficient diet stimulates the onset of the hepatitis due to hepatic copper deposition in the Long-Evans Cinnamon (LEC) rat

    Energy Technology Data Exchange (ETDEWEB)

    Sugawara, Naoki; Sugawara, Chieko [Sapporo Medical Univ. (Japan). Dept. of Public Health

    1999-09-01

    To study effects of dietary Cu and Fe levels on the onset of hepatitis in Long-Evans Cinnamon (LEC) rats, female rats (40 days old) were fed a semipurified diet containing 0.1 or 10 mg Cu/kg and 1.5 or 150 mg Fe/kg in a 2 x 2 factorial arrangement for 35 days. At 75 days after birth, LEC rats (+Cu-Fe) fed a Cu-sufficient but Fe-deficient diet (Cu, 10 mg/kg; Fe, 1.5 mg/kg) showed jaundice, with lethargy, anorexia, and malaise. The biochemical variables relating to liver function were significantly increased compared to three other groups, a Cu- and Fe-deficient (-Cu-Fe) group, a Cu-deficient but Fe-sufficient (-Cu+Fe) group, and a Cu and Fe sufficient (+Cu+Fe) group. Furthermore, the +Cu-Fe rat liver showed massive necrosis with huge nuclei. The other three groups presented no biochemical and histological findings of hepatitis. Hepatic Cu and metallothionein concentrations were 289 {+-} 87 (mean {+-} SD) {mu}g/g liver and 8.7 {+-} 1.8 mg/g liver, respectively, in the +Cu-Fe rats. However, in the +Cu+Fe group the values were 196 {+-} 28 {mu}g Cu/g liver and 10.8 {+-} 1.0 mg/g liver. Hepatic Fe deposition was not influenced significantly by the dietary Cu level. The +Cu-Fe group with jaundice showed the highest free Cu concentration in the liver among the four groups, but the hepatic free Fe concentration was similar to those in the -Cu+Fe and +Cu+Fe groups. Our results indicate that an Fe-deficient diet enhances the deposition of hepatic Cu due to increased absorption of Cu from the gastrointestinal tract. This deposition stimulated the onset of hepatitis. (orig.)

  5. Raman analysis of cobalt blue pigment in blue and white porcelain: A reassessment.

    Science.gov (United States)

    Jiang, Xiaochenyang; Ma, Yanying; Chen, Yue; Li, Yuanqiu; Ma, Qinglin; Zhang, Zhaoxia; Wang, Changsui; Yang, Yimin

    2018-02-05

    Cobalt blue is a famous pigment in human history. In the past decade it is widely reported that the cobalt aluminate has been detected in ancient ceramics as blue colorant in glaze, yet the acquired Raman spectra are incredibly different from that of synthesised references, necessitating a reassessment of such contradictory scenario with more accurate analytic strategies. In this study, micro-Raman spectroscopy (MRS) and scanning electron microscopy (SEM) in association with energy dispersive spectrometry (EDS) were performed on under-glaze cobalt pigments from one submerged blue and white porcelain shard dated from Wanli reign (1573-1620CE) of Ming dynasty (1365-1644CE) excavated at Nan'ao I shipwreck off the southern coast of China. The micro-structural inspection reveals that the pigment particles have characteristics of small account, tiny size, heterogeneously distribution, and more importantly, been completely enwrapped by well-developed anorthite crystals in the glaze, indicating that the signals recorded in previous publications are probably not from cobalt pigments themselves but from outside thickset anorthite shell. The further spectromicroscopic analyses confirm this presumption when the accurate spectra of cobalt aluminate pigment and surrounding anorthite were obtained separately with precise optical positioning. Accordingly, we reassess and clarify the previous Raman studies dedicated to cobalt blue pigment in ancient ceramics, e.g. cobalt blue in celadon glaze, and in turn demonstrate the superiority and necessity of coupling spectroscopic analysis with corresponding structure observation, especially in the characterization of pigments from complicated physico-chemical environment like antiquities. Thus, this study promotes a better understanding of Raman spectroscopy study of cobalt blue pigments in art and archaeology field. Copyright © 2017 Elsevier B.V. All rights reserved.

  6. Raman analysis of cobalt blue pigment in blue and white porcelain: A reassessment

    Science.gov (United States)

    Jiang, Xiaochenyang; Ma, Yanying; Chen, Yue; Li, Yuanqiu; Ma, Qinglin; Zhang, Zhaoxia; Wang, Changsui; Yang, Yimin

    2018-02-01

    Cobalt blue is a famous pigment in human history. In the past decade it is widely reported that the cobalt aluminate has been detected in ancient ceramics as blue colorant in glaze, yet the acquired Raman spectra are incredibly different from that of synthesised references, necessitating a reassessment of such contradictory scenario with more accurate analytic strategies. In this study, micro-Raman spectroscopy (MRS) and scanning electron microscopy (SEM) in association with energy dispersive spectrometry (EDS) were performed on under-glaze cobalt pigments from one submerged blue and white porcelain shard dated from Wanli reign (1573-1620 CE) of Ming dynasty (1365-1644 CE) excavated at Nan'ao I shipwreck off the southern coast of China. The micro-structural inspection reveals that the pigment particles have characteristics of small account, tiny size, heterogeneously distribution, and more importantly, been completely enwrapped by well-developed anorthite crystals in the glaze, indicating that the signals recorded in previous publications are probably not from cobalt pigments themselves but from outside thickset anorthite shell. The further spectromicroscopic analyses confirm this presumption when the accurate spectra of cobalt aluminate pigment and surrounding anorthite were obtained separately with precise optical positioning. Accordingly, we reassess and clarify the previous Raman studies dedicated to cobalt blue pigment in ancient ceramics, e.g. cobalt blue in celadon glaze, and in turn demonstrate the superiority and necessity of coupling spectroscopic analysis with corresponding structure observation, especially in the characterization of pigments from complicated physico-chemical environment like antiquities. Thus, this study promotes a better understanding of Raman spectroscopy study of cobalt blue pigments in art and archaeology field.

  7. Methylene Blue for Bronchopleural Fistula Localization.

    Science.gov (United States)

    Sakata, Kenneth K; Nasim, Faria; Schiavo, Dante N; Nelson, Darlene R; Kern, Ryan M; Mullon, John J

    2017-09-20

    A bronchopleural fistula (BPF) is a communication between the pleural space and the bronchial tree. BPFs are challenging to diagnose and are associated with a high morbidity and mortality. Sequential balloon occlusion is commonly used for localization of a BPF. We describe our experience with 4 cases of successful localization of the BPF by instillation of methylene blue into the pleural space through a pigtail catheter, with simultaneous bronchoscopic visualization of dye in the tracheobronchial tree. Two patients were treated with endobronchial valves and 3 had a surgical thoracic muscle flap placed.

  8. Maya Blue Paint: An Ancient Nanostructured Material

    Science.gov (United States)

    Jose-Yacaman; Rendon; Arenas; Serra Puche MC

    1996-07-12

    Maya blue paint was often used in Mesoamerica. The origin of its color and its resistance to acids and biocorrosion have not been fully understood. High-resolution transmission electron microscopy, electron energy loss spectroscopy, and x-ray microanalysis studies of authentic samples show that palygorskite crystals in the paint form a superlattice that probably occurs as a result of mixing with indigo molecules. An amorphous silicate substrate contains inclusions of metal nanoparticles encapsulated in the substrate and oxide nanoparticles on the surface. The beautiful tone of the color is obtained only when both the particles and the superlattice are present.

  9. THE BABY BLUES AND POSTNATAL DEPRESSION

    Directory of Open Access Journals (Sweden)

    Suryati Suryati

    2008-03-01

    Full Text Available The Baby Bluesadalah depresi ringan yang terjadi pada ibu-ibu dalam masa beberapa jam setelah melahirkan, sampai beberapa hari setelah melahirkan, dan kemudian dia akan hilang dengan sendirinya jika diberikan pelayanan psikologis yang baik. Banyak para ibu-ibu setelah melahirkan mengalami emosi yang berlebihan dan merasa sangat sedih sekali, dan diiringi tangisan tanpa alasan yang jelas. Dalam masa ini tidak mungkin lagi kita akan melihat ibu tersenyum atau tertawa. Sebagian ibu merasa sangat khawatir, cemas, dan tegang. Masalah – masalah kecil saja jika tidak cepat diatasi pada masa hamil, atau sebelum melahirkan dapat menimbulkan Baby Blues.

  10. Blue running of the primordial tensor spectrum

    Energy Technology Data Exchange (ETDEWEB)

    Gong, Jinn-Ouk, E-mail: jinn-ouk.gong@apctp.org [Asia Pacific Center for Theoretical Physics, Pohang 790-784 (Korea, Republic of)

    2014-07-01

    We examine the possibility of positive spectral index of the power spectrum of the primordial tensor perturbation produced during inflation in the light of the detection of the B-mode polarization by the BICEP2 collaboration. We find a blue tilt is in general possible when the slow-roll parameter decays rapidly. We present two known examples in which a positive spectral index for the tensor power spectrum can be obtained. We also briefly discuss other consistency tests for further studies on inflationary dynamics.

  11. One a Blue-Collar Worker, Always a Blue-Collar Worker?

    Science.gov (United States)

    Dwight, Alice Heasley

    1978-01-01

    There are many blue-collar workers who aspire to work in the white-collar world. Work histories of employed adults from an industrial area of Baltimore who were classified as Realistic (based on the Holland Vocational Preference Inventory) show most adults are apparently unable to move out of this classification. (Author)

  12. Sustaining the land, people, and economy of the Blue Mountains: The Blue Mountains Natural Resources Institute

    Science.gov (United States)

    Lynn Starr; James McIver; Thomas M. Quigley

    2000-01-01

    The Blue Mountains Natural Resources Institute approaches issues by deciding if a critical issue is one of information needs or of differing values. If a values issue, we arrange local forums for discussion; if an information issue, we disseminate available information, or undertake research projects as appropriate. One issue we have researched involving both values...

  13. Fuzzy logic color detection: Blue areas in melanoma dermoscopy images.

    Science.gov (United States)

    Lingala, Mounika; Stanley, R Joe; Rader, Ryan K; Hagerty, Jason; Rabinovitz, Harold S; Oliviero, Margaret; Choudhry, Iqra; Stoecker, William V

    2014-07-01

    Fuzzy logic image analysis techniques were used to analyze three shades of blue (lavender blue, light blue, and dark blue) in dermoscopic images for melanoma detection. A logistic regression model provided up to 82.7% accuracy for melanoma discrimination for 866 images. With a support vector machines (SVM) classifier, lower accuracy was obtained for individual shades (79.9-80.1%) compared with up to 81.4% accuracy with multiple shades. All fuzzy blue logic alpha cuts scored higher than the crisp case. Fuzzy logic techniques applied to multiple shades of blue can assist in melanoma detection. These vector-based fuzzy logic techniques can be extended to other image analysis problems involving multiple colors or color shades. Copyright © 2014 Elsevier Ltd. All rights reserved.

  14. Novel deep-blue emitting phosphorescent emitter

    Science.gov (United States)

    Schildknecht, C.; Ginev, G.; Kammoun, A.; Riedl, T.; Kowalsky, W.; Johannes, H.-H.; Lennartz, C.; Kahle, K.; Egen, M.; Geßner, T.; Bold, M.; Nord, S.; Erk, P.

    2005-10-01

    Currently, one of the most challenging applications for OLEDs is the full color display. The most energy-efficient way to realize light generation in OLEDs is by using phosphorescent emitters. Green and red emitters have already been demonstrated, but the search for blue emitting organic phosphorescent emitters with good color purity is still ongoing with arduous effort. Here we present our work with a new material developed at BASF which allows phosphorescent emission in the deep-blue spectral range. The emitter has an emission maximum at 400 nm, which gives CIE color coordinates of x = 0.16 and y = 0.06. An OLED device made with this new material shows a maximum external quantum efficiency of 1.5 %. The OLED was built in a three layer structure, with the emitting zone being a hybrid guest-host system. As host material we used the optically and electronically inert polymer poly-methyl-methacrylate (PMMA). Because of its lack of charge transport abilities we doped the host material with a high concentration of the triplet emitting material, i.e. the emitter itself is also used as charge transport material.

  15. Blue LEDs feasibility for tissue fluorescence analysis

    Science.gov (United States)

    Dets, Sergiy M.; Denisov, Nikolay A.

    2000-04-01

    We considered the limited number of light-induced fluorescence applications for marketed ultra-bright blue LEDs where they can compete with versatile laser sources. Satisfactory optical output and miniature size as well as low power consumption of blue LEDs emitting at 470 nm allow to consider them as a promising alternatives to metal vapor or gas lasers used in many expires LIF applications. Available to authors LEDs form Hewlett-Packard, Micro Electronics Corp., Nichia Chemical Industries Ltd. and Toyoda Gosei Co. were tested to comply with demands to a tissue excitation source for portable spectroscopes. The optical performance of LEDs has shown that selected group of InGaN LEDs could be successfully used for that. The miniature illuminator that includes LED, focusing condenser, filter set and distal fiberoptic light concentrator was designed and tested in conjunction with portable CCD- equipped spectroscope. Operating in dark condition the proposed LED illuminator provides the level of fluorescence signal sufficient to detect spectral abnormalities in human Caucasian skin and excised gastrointestinal samples. All tissue autofluorescence data taken under LED illumination were compared with readings under He-Cd laser excitation and showed a good match. A new diagnostic designs based on LEDs were considered for clinical use.

  16. Grassy Silica Nanoribbons and Strong Blue Luminescence

    Science.gov (United States)

    Wang, Shengping; Xie, Shuang; Huang, Guowei; Guo, Hongxuan; Cho, Yujin; Chen, Jun; Fujita, Daisuke; Xu, Mingsheng

    2016-09-01

    Silicon dioxide (SiO2) is one of the key materials in many modern technological applications such as in metal oxide semiconductor transistors, photovoltaic solar cells, pollution removal, and biomedicine. We report the accidental discovery of free-standing grassy silica nanoribbons directly grown on SiO2/Si platform which is commonly used for field-effect transistors fabrication without other precursor. We investigate the formation mechanism of this novel silica nanostructure that has not been previously documented. The silica nanoribbons are flexible and can be manipulated by electron-beam. The silica nanoribbons exhibit strong blue emission at about 467 nm, together with UV and red emissions as investigated by cathodoluminescence technique. The origins of the luminescence are attributed to various defects in the silica nanoribbons; and the intensity change of the blue emission and green emission at about 550 nm is discussed in the frame of the defect density. Our study may lead to rational design of the new silica-based materials for a wide range of applications.

  17. Protein requirement for Trichogaster lalius, blue variety

    Directory of Open Access Journals (Sweden)

    Jener Alexandre Sampaio Zuanon

    2013-02-01

    Full Text Available The objective of the present study was to evaluate the protein requirement of juvenile Trichogaster lalius, blue variety. The experimental design was of randomised blocks (B1 = initial weight of 1.04±0.05 g and B2 = 1.36±0.02 g, with two replicates within each block and five treatments (230, 270, 310, 350 and 390 g CP/kg diet. The fish were fed to satiation, three times a day for 90 days. The study evaluated: survival rate, weight gain, final length, feed intake, feed conversion ratio, protein efficiency ratio, specific growth rate and condition factor. There was a linear effect of dietary protein levels for protein efficiency ratio, specific growth rate (positive linear effect and feed conversion ratio (negative linear effect. For weight gain, final length, feed intake and condition factor a quadratic effect of dietary protein levels was observed, with estimated values of 409.8, 366.2, 317.4 and 365.0 g CP/kg diet, to improve their performance parameters. Analysis of growth based on the length of the fish shows that 366.2 g of CP/kg diet meets the protein requirement of juvenile Trichogaster lalius, blue variety.

  18. Kinetics and mechanism of Prussian blue formation

    Directory of Open Access Journals (Sweden)

    R.K. Adhikamsetty

    2009-04-01

    Full Text Available The kinetics of reaction between ferrocyanide and ferric ions under acidic conditions was studied at fixed ionic strength (0.1 M and (25 plus or minus 0.1 oC by using the stopped flow technique, under limiting conditions of [ferrocyanide] and with other reactants in excess. The reaction had first-order dependence on ferrocyanide, Fe(III and H+ ion concentrations and had negative salt effect. On the basis of the experimental findings, a plausible mechanism for the formation of soluble form of Prussian blue (KFe{Fe(CN6}x H2O and rate law are proposed. The activation parameters for the title reaction are estimated. A relatively low energy of activation (23 kJ mol-1 and high negative entropy of activation (-231 J K-1 mol-1 agree well with the proposed mechanism and configuration of complex ion leading to the formation of insoluble Prussian blue, Fe4{Fe(CN6}3 y H2O.

  19. A continuous curriculum for building code blue competency.

    Science.gov (United States)

    Jankouskas, T S

    2001-01-01

    Staff response to a code blue can be cultivated when a continuous curriculum for code blue competency is used. This curriculum details ongoing code blue education yet requires only small increments of time for the inservice classes. The curriculum, adaptable to any unit, consists of three components: a unit-specific orientation to emergency equipment; exercises in critical thinking and doing; and exercises in documentation.

  20. The Code Blue Experiences: Gains, Problems and Troubleshooting

    OpenAIRE

    Murat, Emin; Toprak, Selime; Doğan, Derya Buğur; Mordoğan, Fatma

    2014-01-01

    The code blue, which is a professional resuscitation team organization, has an important role for the survival of patients with respiratory or/and cardiac arrest in the hospitals. This study was respectively designed to evaluate the affectivity, safety, significance, benefits and outcomes of the code blue implementation in accordance with quality policy of our hospitals. All the code blue calls were respectively reviewed over the period of d 2010 to 2012 years in the Malatya State Hospital th...

  1. Service design as an approach for recognizing blue ocean

    OpenAIRE

    Koskelo, Minna

    2013-01-01

    This thesis aims to show that service design as an approach can be utilized for discovering new market space, referred as blue ocean and new business opportunities, and thus to show that service design can be seen as an approach for bringing the new logic for value creation into strategic level. From the field of strategic management the theory of blue ocean strategy was chosen for presenting the strategic outcome and further since there are similarities be-tween blue ocean strategy approach ...

  2. The Return of the Blue Butterfly

    Science.gov (United States)

    Santos, Anabela

    2014-05-01

    The Return of the Blue Butterfly The English writer Charles Dickens once wrote: "I only ask to be free. The butterflies are free". But are they really? The work that I performed with a group of students from 8th grade, had a starting point of climate change and the implications it has on ecosystems. Joining the passion I have for butterflies, I realized that they are also in danger of extinction due to these climatic effects. Thus, it was easy to seduce my students wanting to know more. Luckily I found Dr. Paula Seixas Arnaldo, a researcher at the University of Trás-os-Montes and Alto Douro, who has worked on butterflies and precisely investigated this issue. Portugal is the southern limit of butterfly-blue (Phengaris alcon), and has been many years in the red book of endangered species. Butterfly-blue is very demanding of their habitat, and disappears very easily if ideal conditions are not satisfied. Increased fragmentation of landscapes and degradation of suitable habitats, are considered the greatest challenges of the conservation of Phengaris butterfly in Portugal. In recent decades, climate change has also changed butterfly-blue spatial distribution with a movement of the species northward to colder locations, and dispersion in latitude. Butterflies of Europe must escape to the North because of the heat. Dr. Paula Seixas Arnaldo and her research team began a project, completed in December 2013, wanted to preserve and restore priority habitats recognized by the European Union to help species in danger of disappearing with increasing temperature. The blue butterfly is extremely important because it is a key indicator of the quality of these habitats. In the field, the butterflies are monitored to collect all possible data in order to identify the key species. Butterflies start flying in early July and cease in late August. Mating takes about an hour and occurs in the first days of life. The gentian-peat (Gentiana pneumonanthe) serves as the host plant for

  3. Phototherapy with blue and green mixed-light is as effective against unconjugated jaundice as blue light and reduces oxidative stress in the Gunn rat model.

    Science.gov (United States)

    Uchida, Yumiko; Morimoto, Yukihiro; Uchiike, Takao; Kamamoto, Tomoyuki; Hayashi, Tamaki; Arai, Ikuyo; Nishikubo, Toshiya; Takahashi, Yukihiro

    2015-07-01

    Phototherapy using blue light-emitting diodes (LED) is effective against neonatal jaundice. However, green light phototherapy also reduces unconjugated jaundice. We aimed to determine whether mixed blue and green light can relieve jaundice with minimal oxidative stress as effectively as either blue or green light alone in a rat model. Gunn rats were exposed to phototherapy with blue (420-520 nm), filtered blue (FB; 440-520 nm without 1.00), respectively. Blue plus green phototherapy is as effective as blue phototherapy and it attenuates irradiation-induced oxidative stress. Combined blue and green spectra might be effective against neonatal hyperbilirubinemia. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  4. Tooth whitening evaluation of blue covarine containing toothpastes

    National Research Council Canada - National Science Library

    Zhang, Qiong; Sun, Jianing N; Philpotts, Carole J; Smith, Richard N; Joiner, Andrew; Ricketts, Stephen R; Naeeni, Mojgan; Tao, Danying

    2017-01-01

    ...; Bleaching; Perception; Aesthetics Abstract Objectives To measure the tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing blue covarine in vitro and in vivo...

  5. Tooth whitening evaluation of blue covarine containing toothpastes.

    Science.gov (United States)

    Tao, Danying; Smith, Richard N; Zhang, Qiong; Sun, Jianing N; Philpotts, Carole J; Ricketts, Stephen R; Naeeni, Mojgan; Joiner, Andrew

    2017-12-01

    To measure the tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing blue covarine in vitro and in vivo. Salivary pellicle coated human extracted teeth were brushed with either a slurry of a toothpaste containing blue covarine (BC), a formulation containing an increased level of blue covarine (BC+) or a negative control toothpaste containing no blue covarine. The colour of the specimens were measured in vitro using either a Minolta chromameter or a VITA Easyshade spectrophotometer, before and after brushing and changes in CIELAB values and tooth Whiteness Index (WIO) values calculated. In a double-blind cross-over clinical study, subjects brushed with either BC or BC+ toothpaste and tooth colour changes were measured with a digital image analysis system. The in vitro studies demonstrated that toothpastes containing blue covarine gave a significantly (pbrushing with the BC+ toothpaste than with the BC toothpaste (WIO p=0.006; b* p=0.013). Toothpastes containing blue covarine gave a statistically significant reduction in tooth yellowness and improvement in tooth whiteness immediately after brushing in both in vitro and clinical studies. In addition, the higher concentration blue covarine toothpaste gave statistically significant greater tooth whitening benefits than the lower concentration blue covarine toothpaste. The silica-based toothpastes containing blue covarine evaluated in the current study gave tooth whitening benefits immediately after one brush. Copyright © 2017 Elsevier Ltd. All rights reserved.

  6. Operant self-administration of sweetened ethanol and time course of blood ethanol levels in adolescent and adult male Long-Evans rats.

    Science.gov (United States)

    Doherty, James M; Gonzales, Rueben A

    2015-03-01

    Little is known regarding mechanisms regulating ethanol (EtOH) self-administration during adolescence or if the mechanisms differ from adults. One of the best models of abuse liability is operant self-administration. Therefore, we characterized operant sweetened EtOH self-administration behavior in adolescent and adult rats. Adolescent (36 days old at first EtOH exposure) and adult male Long-Evans rats were first trained to self-administer 10% sucrose (10S) in an appetitive/consummatory operant model for 1 week, and then the drinking solution was switched to 10% sucrose plus 10% EtOH (10S10E) for 2 weeks. Next, rats were switched to a fixed ratio 2 schedule, and this was followed by 1 session using a progressive ratio schedule of reinforcement. Last, rats were tested for cue-induced reinstatement of lever-pressing behavior under extinction conditions after 13 days of abstinence. Blood EtOH concentration (BEC) of sweetened EtOH (self-administered or intragastric [IG] administration of 1 g/kg) was determined via gas chromatography. Control rats drank only 10S. Consumption of sweetened EtOH was not different between adolescents and adults under any schedule tested, reaching 1 g/kg in 20 minutes in the appetitive/consummatory model. Appetitive behavior directed at sweetened EtOH was less focused in adolescents versus adults. No age differences were found in motivation for sweetened EtOH. Cue-induced reinstatement of EtOH-seeking behavior after abstinence also did not differ by age. In control groups, no age difference was found in appetitive behavior or the amount of sucrose consumed, although adults exhibited greater cue-induced reinstatement. BEC after self-administration or IG administration of sweetened EtOH was higher in adults than adolescents. Consumption and motivation for sweetened EtOH are similar in adolescents and adults, although adolescents are more vulnerable to the effects of EtOH consumption on appetitive behavior. The IG results suggest larger volume

  7. The inhibitory effects of corncob bedding on sexual behavior in the ovariectomized Long-Evans rat treated with estradiol benzoate are overcome by male cues.

    Science.gov (United States)

    Jones, Sherri Lee; Antonie, R Alexandru; Pfaus, James G

    2015-06-01

    The mechanisms underlying the sensitization of sexual behaviors by repeated administration of estradiol benzoate (EB) to ovariectomized (OVX) rats are not well understood. Here we tested whether two housing conditions play a role. Sexual behavior in the female rat is dependent on the activation of ERα (estrogen receptor alpha) by estradiol. Corncob (CC) bedding has been reported to have adverse effects on the reproductive behavior and physiology of rats, and to disrupt ERα signaling in mice. In addition, some rodent behaviors are stimulated by olfactory stimuli and enhanced in the presence of estradiol. Upon arrival to the facilities OVX Long-Evans rats were housed on either Sani-Chips (SC) or CC in a room that housed only females (F) or males and females (M). Females were first given four sexual training sessions with 10 μg EB + 500 μg progesterone (P; administered 48 h and 4h prior to training, respectively), followed by a 2-week hormone washout period. Next, 10 μg EB was administered s.c. every 4 days, 48 h prior to each of 8 test sessions in a unilevel 4-hole pacing chamber. On the final training day (i.e., when primed with EB+P), no inhibitory effects of corncob bedding were found, however a facilitation of the lordosis quality occurred in SC/F. Although all groups appear to have sensitized to the repeated administration of EB, CC/F animals displayed fewer high quality lordosis magnitudes and hop/darts, and received fewer mounts and intromissions overall. They also had a lower lordosis quotient (LQ) on tests 2-4 although this effect disappeared by test 5. These results suggest that although CC may inhibit some components of female sexual behavior when primed with EB alone, cues from sexually vigorous males can overcome that inhibition. Moreover, they suggest that male cues can facilitate mechanisms of estradiol sensitization. We recommend that quality control studies be conducted at individual institutions to assess any impact of corncob bedding on animal

  8. Nicotine and ethanol co-use in Long-Evans rats: Stimulatory effects of perinatal exposure to a fat-rich diet

    Science.gov (United States)

    Karatayev, Olga; Lukatskaya, Olga; Moon, Sang-Ho; Guo, Wei-Ran; Chen, Dan; Algava, Diane; Abedi, Susan; Leibowitz, Sarah F.

    2015-01-01

    Clinical studies demonstrate frequent co-existence of nicotine and alcohol abuse and suggest that this may result, in part, from the ready access to and intake of fat-rich diets. Whereas animal studies show that high-fat diet intake in adults can enhance the consumption of either nicotine or ethanol and that maternal consumption of a fat-rich diet during pregnancy increases operant responding for nicotine in offspring, little is known about the impact of dietary fat on the co-abuse of these two drugs. The goal of this study was to test in Long-Evans rats the effects of perinatal exposure to fat on the co-use of nicotine and ethanol, using a novel paradigm that involves simultaneous intravenous (IV) self-administration of these two drugs. Fat- vs. chow-exposed offspring were characterized and compared, first in terms of their nicotine self-administration behavior, then in terms of their nicotine/ethanol self-administration behavior, and lastly in terms of their self-administration of ethanol in the absence of nicotine. The results demonstrate that maternal consumption of fat compared to low-fat chow during gestation and lactation significantly stimulates nicotine self-administration during fixed-ratio testing. It also increases nicotine/ethanol self-administration during fixed-ratio and dose-response testing, with BEC elevated to 120 mg/dL, and causes an increase in breakpoint during progressive ratio testing. Of particular note is the finding that rats perinatally exposed to fat self-administer significantly more of the nicotine/ethanol mixture as compared to nicotine alone, an effect not evident in the chow-control rats. After removal of nicotine from the nicotine/ethanol mixture, this difference between the fat- and chow-exposed rats was lost, with both groups failing to acquire the self-administration of ethanol alone. Together, these findings suggest that perinatal exposure to a fat-rich diet, in addition to stimulating self-administration of nicotine, causes

  9. Measuring Blue Space Visibility and ?Blue Recreation? in the Everyday Lives of Children in a Capital City

    OpenAIRE

    Pearson, Amber L.; Bottomley, Ross; Chambers, Tim; Thornton, Lukar; Stanley, James; Smith, Moira; Barr, Michelle; Signal, Louise

    2017-01-01

    Blue spaces (water bodies) may promote positive mental and physical health through opportunities for relaxation, recreation, and social connections. However, we know little about the nature and extent of everyday exposure to blue spaces, particularly in settings outside the home or among children, nor whether exposure varies by individual or household characteristics. Wearable cameras offer a novel, reliable method for blue space exposure measurement. In this study, we used images from camera...

  10. Model Blue Economy di Kawasan Asia Pasifik (Studi Kasus: Penerapan Model Blue Economy pada Industri Perikanan Indonesia)

    OpenAIRE

    Rani, Faisyal; Cahayasari, Wulandari

    2015-01-01

    This research explains about blue economy models in Asia Pacific region, especially the implementation of the blue economy models in Indonesia fisheries industry. Asia Pacific Economic Cooperation (APEC) is a forum of economic cooperation countries of Asia Pacifik which aims to improve the welfare and economic growth has a vision of marine and fisheries which competitive and sustainable for community welfare. To realize the vision of marine and fisheries development implemented by blue econom...

  11. Jupiter in blue, ultraviolet and near infrared

    Science.gov (United States)

    2000-01-01

    These three images of Jupiter, taken through the narrow angle camera of NASA's Cassini spacecraft from a distance of 77.6 million kilometers (48.2 million miles) on October 8, reveal more than is apparent to the naked eye through a telescope.The image on the left was taken through the blue filter. The one in the middle was taken in the ultraviolet. The one on the right was taken in the near infrared.The blue-light filter is within the part of the electromagnetic spectrum detectable by the human eye. The appearance of Jupiter in this image is, consequently, very familiar. The Great Red Spot (below and to the right of center) and the planet's well-known banded cloud lanes are obvious. The brighter bands of clouds are called zones and are probably composed of ammonia ice particles. The darker bands are called belts and are made dark by particles of unknown composition intermixed with the ammonia ice.Jupiter's appearance changes dramatically in the ultraviolet and near infrared images. These images are near negatives of each other and illustrate the way in which observations in different wavelength regions can reveal different physical regimes on the planet.All gases scatter sunlight efficiently at short wavelengths; this is why the sky appears blue on Earth. The effect is even more pronounced in the ultraviolet. The gases in Jupiter's atmosphere, above the clouds, are no different. They scatter strongly in the ultraviolet, making the deep banded cloud layers invisible in the middle image. Only the very high altitude haze appears dark against the bright background. The contrast is reversed in the near infrared, where methane gas, abundant on Jupiter but not on Earth, is strongly absorbing and therefore appears dark. Again the deep clouds are invisible, but now the high altitude haze appears relatively bright against the dark background. High altitude haze is seen over the poles and the equator.The Great Red Spot, prominent in all images, is obviously a feature whose

  12. Antihyperglycemic, insulin-sensitivity and anti-hyperlipidemic potential of Ganoderma lucidum, a dietary mushroom, on alloxan- and glucocorticoid-induced diabetic Long-Evans rats

    Directory of Open Access Journals (Sweden)

    Md. Moklesur Rahman Sarker

    2015-12-01

    Full Text Available Background: Reishi (Ganoderma lucidum is a well-known and popular edible mushroom eaten as vegetables all over the world. It has been used as alternative medicine for long years in China, Korea, Japan, Malaysia, and in eastern Russia. It is reported to exhibit a number of medicinal properties including antitumor, antioxidant, immunomodulating, anti-inflammatory, hepatoprotective, and hypoglycemic activities due to the presence of bioactive polysaccharide. Glucocorticoids, prescribed for the treatment of arthritis to protect inflammation and reduce pain, can induce hyperglycemia or aggravate the hyperglycemic condition reaching to very high glucose levels in diabetic patients. However, no report has been published for its activity on glucocorticoid-induced diabetes. Objective: To investigate the effect of Ganoderma lucidum on alloxan- and glucocorticoid- induced diabetes in Long-Evans rats. Methods: Alloxan monohydrate (150 mg/kg was intraperitoneally administered to Long-Evans rats as a single dose. The same volume of normal saline was injected to control rats. Three days after alloxan injection, rats with plasma glucose levels higher than 12 mmoL /L were considered as diabetic and they were included in the study. Reishi mushroom was collected from the Mushroom Development Institute, Ministry of Agriculture, Savar, Dhaka, Bangladesh, where it was identified by a Taxonomist. Petroleum ether extract (PEE Methanol extract (ME were prepared by maceration and distillation techniques. The extracts were orally administered once in a day at doses of 200, 400, 600 and 800 mg/kg, respectively for 7 days. Metformin (150 mg/kg was orally administered as a standard antidiabetic drug. Glucose levels were measured at 0 and 7th days of treatment. The rats were allowed to rest for 1 week without treatment. The animals were again injected with dexamethasone (2 mg/kg through intra-muscular route for 3 days and glucose levels were monitored regularly. Rats were

  13. Liquid biofuels from blue biomass; Macroalgae

    Energy Technology Data Exchange (ETDEWEB)

    Kadar, Z.; Jensen, Annette Eva; Bangsoe Nielsen, H.; Ejbye Schmidt, J.

    2011-05-15

    Marine (blue) biomasses, such as macroalgaes, represent a huge unexploited amount of biomass. With their various chemical compositions, macroalgaes can be a potential substrate for food, feed, biomaterials, pharmaceuticals, health care products and also for bioenergy. Algae use seawater as a growth medium, light as energy source and they capture CO{sub 2} for the synthesis of new organic material, thus can grow on non-agricultural land, without increasing food prices, or using fresh water. Due to all these advantages in addition to very high biomass yield with high carbohydrate content, macroalgaes can be the well suited candidates as feedstock for biofuel production in the future. The aim of our studies is to examine the possibility producing liquid biofuel (ethanol and butanol) from macroalgaes. (Author)

  14. FIrpic: archetypal blue phosphorescent emitter for electroluminescence.

    Science.gov (United States)

    Baranoff, Etienne; Curchod, Basile F E

    2015-05-14

    FIrpic is the most investigated bis-cyclometallated iridium complex in particular in the context of organic light emitting diodes (OLEDs) because of its attractive sky-blue emission, high emission efficiency, and suitable energy levels. In this Perspective we review the synthesis, structural characterisations, and key properties of this emitter. We also survey the theoretical studies and summarise a series of selected monochromatic electroluminescent devices using FIrpic as the emitting dopant. Finally we highlight important shortcomings of FIrpic as an emitter for OLEDs. Despite the large body of work dedicated to this material, it is manifest that the understanding of photophysical and electrochemical processes are only broadly understood mainly because of the different environment in which these properties are measured, i.e., isolated molecules in solvent vs. device.

  15. Ultrasound promoted synthesis of Nile Blue derivatives.

    Science.gov (United States)

    Raju, B Rama; Sampaio, Diogo M F; Silva, M M; Coutinho, Paulo J G; Gonçalves, M Sameiro T

    2014-01-01

    Ultrasound irradiation was used for the first time towards the synthesis of new Nile Blue related benzo[a]phenoxazinium chlorides possessing isopentylamino, (2-cyclohexylethyl)amino and phenethylamino groups at 5-position of the heterocyclic system. The efficacy of sonochemistry was investigated with some of our earlier reported synthesis of benzo[a]phenoxazinium chlorides. This newer protocol proved competent in terms of reaction times and enhanced yields. Photophysical studies carried out in ethanol, water and simulated physiological conditions, revealed that emission maxima occurred in the range 644-656 nm, with high fluorescent quantum yields. Other attractive feature exhibited by these materials includes good thermal stability. These properties might be useful in the development of fluorescent probes for biotechnology. Copyright © 2013 Elsevier B.V. All rights reserved.

  16. Blue native-gel electrophoresis proteomics.

    Science.gov (United States)

    Andringa, Kelly; King, Adrienne; Bailey, Shannon

    2009-01-01

    The importance of the mitochondrion in maintaining normal cellular physiology has long been appreciated. Recently there has been an upsurge in mitochondrial research due to increased recognition that a number of diseases are caused by defective functioning of this key intracellular organelle. Given this, along with advances made in proteomics technologies, the mitochondrion is clearly recognized as a top candidate for proteomics analysis. However, mitochondrial proteomics is not a trivial undertaking due to physicochemical properties that impair the resolution of inner mitochondrial membrane proteins when using conventional proteomic gel electrophoresis procedures. To circumvent such problems, many laboratories have adapted blue native-gel electrophoresis (BN-PAGE), a specialized type of native-gel electrophoresis, to generate high-resolution proteomic maps of the oxidative phosphorylation system. In this short overview the concepts and methods of BN-PAGE are presented, which demonstrate the power of using this complementary proteomics approach to identify alterations in the mitochondrial proteome that contribute to disease.

  17. Lidemburgo blues, a palavra para o ausente

    Directory of Open Access Journals (Sweden)

    Wagner Moreira

    2009-12-01

    Full Text Available Este texto tem por objetivo trabalhar com o livro de poesias Lidemburgo blues, de Luís Carlos Patraquim, publicado em 1997 na cidade de Lisboa. A partir dessa obra, procurar-se-á se refletir sobre a produção poética do autor, destacando-se a sua condição de exercício imaginário que perpetra certa crise da representação. Ao verificar-se a vizinhança estabelecida pelos poemas com a temática da morte, percebe-se a ênfase no aspecto de falência que contamina a imagem poética, o que se revela como um estado de fendimento da escrita.Palavras-chave: Poesia contemporânea; Poesia de língua portuguesa; Poesia moçambicana; Ruína; Representação.

  18. Novel host materials for blue phosphorescent OLEDs

    Science.gov (United States)

    Strohriegl, Peter; Wagner, Daniel; Schrögel, Pamela; Hoffmann, Sebastian T.; Köhler, Anna; Heinemeyer, Ute; Münster, Ingo

    2013-09-01

    We present two classes of host materials for blue phosphors. The first are carbazole substituted biphenyls 1-9. In these CBP-type materials the triplets are confined to one half of the molecules by using either twisted biphenyls or by a metalinkage of the carbazoles to the biphenyl. We obtained high triplet energies of 2.95-2.98 eV and high glass transition temperatures in the range of 100-120 °C. OLEDs were fabricated using the host material 6 and the carbene emitter Ir(dbfmi) with pure blue emission at 450 nm. The devices achieved an external quantum efficiency of 8.7% at 100 cd/m2 and 6.1% at 1000 cd/m2. MBPTRZ with an electron transporting biscarbazolyltriazine that is separated from the hole transporting carbazole by a non-conjugated, meta-linked biphenyl unit is an example for a bipolar matrix material. The excellent glass forming properties and the high Tg of 132 °C ensure morphological stability in OLEDs. The meta-linkage and the additional twist at the biphenyl unit, which is achieved by two methyl groups in the 2- and 2'-position of the biphenyl in MBPTRZ leads to a decoupling of the electron accepting and electron donating part and therefore to a high triplet energy of 2.81 eV. DFT calculations show a clear separation of the electron and hole transporting moieties. A phosphorescent OLED with MBPTRZ as host and FIrpic as emitter reached a maximum external quantum efficiency of 7.0%, a current efficiency of 16.3 cd/A and a power efficiency of 6.3 lm/W.

  19. Underwater Chaotic Lidar using Blue Laser Diodes

    Science.gov (United States)

    Rumbaugh, Luke K.

    The thesis proposes and explores an underwater lidar system architecture based on chaotic modulation of recently introduced, commercially available, low cost blue laser diodes. This approach is experimentally shown to allow accurate underwater impulse response measurements while eliminating the need for several major components typically found in high-performance underwater lidar systems. The proposed approach is to: 1. Generate wideband, noise-like intensity modulation signals using optical chaotic modulation of blue-green laser diodes, and then 2. Use this signal source to develop an underwater chaotic lidar system that uses no electrical signal generator, no electro-optic modulator, no optical frequency doubler, and no large-aperture photodetector. The outcome of this thesis is the demonstration of a new underwater lidar system architecture that could allow high resolution ranging, imaging, and water profiling measurements in turbid water, at a reduced size, weight, power and cost relative to state-of-the-art high-performance underwater lidar sensors. This work also makes contributions to the state of the art in optics, nonlinear dynamics, and underwater sensing by demonstrating for the first time: 1. Wideband noise-like intensity modulation of a blue laser diode using no electrical signal generator or electro-optic modulator. Optical chaotic modulation of a 462 nm blue InGaN laser diode by self-feedback is explored for the first time. The usefulness of the signal to chaotic lidar is evaluated in terms of bandwidth, modulation depth, and autocorrelation peak-to-sidelobe-ratio (PSLR) using both computer and laboratory experiments. In laboratory experiments, the optical feedback technique is shown to be effective in generating wideband, noise-like chaotic signals with strong modulation depth when the diode is operated in an external-cavity dominated state. The modulation signal strength is shown to be limited by the onset of lasing within the diode's internal

  20. Fluctuating and Directional Asymmetry of the Blue Mussel (

    NARCIS (Netherlands)

    Lajus, D.; Katolikova, M.; Strelkov, P.; Hummel, H.

    2015-01-01

    In this work we examined morphological variation at different levels to study performance and population structuring of the blue mussel Mytilus edulis. Our objectives were: (i) to develop an integrated technique for analyzing morphological variation in blue mussels and, based on this technique; (ii)

  1. Live weight and reproduction performance of Zimbabwean Blue and ...

    African Journals Online (AJOL)

    Live weight and reproduction performance of Zimbabwean Blue and South African Black ostriches. ... South African Journal of Animal Science ... line differences for live weight and reproduction performance in sexually mature ostriches of the Zimbabwean Blue (ZB) and South African Black (SAB) strains during 2003 to 2006.

  2. Code Blue evaluation in children’s hospital

    Science.gov (United States)

    Sahin, Kubra Evren; Ozdinc, Oktay Zeki; Yoldas, Suna; Goktay, Aylin; Dorak, Selda

    2016-01-01

    BACKGROUND: True alarm rate of the Code Blue cases is at a low level in the Dr. Behçet Uz Children’s Hospital in İzmir. This study aims to analyse the use of the Code Blue alarm cases in the children’s hospital. METHODS: This retrospective clinical study evaluated the age and the gender of the cases, the arriving time of the Code Blue team, the date and time of the Code Blue Call, the reasons of the Code Blue Call, and the verification which were all obtained from the Code Blue forms of the hospital dated between January 2014 and January 2015. The data of 139 Code Blue cases’ forms were investigated and was divided into two groups: before and after the education containing 88 and 51 cases, respectively. RESULTS: Conversive disorder (26% to 13%, Pode Blue cases were false calls with female greater than male (Pode that is to say pre-diagnosis team should be formed. PMID:27547281

  3. Designing green and blue infrastructure to support healthy urban living

    NARCIS (Netherlands)

    Gehrels, H.; Meulen, van der Suzanne; Schasfoort, F.; Bosch, Peter; Brolsma, R.; Dinther, van D.; Geerling, G.J.; Goossens, M.; Jacobs, C.M.J.; jong, de Merijn; Kok, Sien; Massop, H.T.L.

    2016-01-01

    This report focuses on developing concepts and design principles for blue and green infrastructure that not only support climate resilience but also contribute to a healthy and liveable urban environment. We will first assess the effectiveness of blue and green infrastructure on the basis of

  4. POSTPARTUM BLUES PADA PERSALINAN DIBAWAH USIA DUA PULUH TAHUN

    Directory of Open Access Journals (Sweden)

    Kurniasari Pratiwi

    2017-05-01

    Full Text Available Postpartum blues or baby blues is a feeling of sadness experienced by mothers after childbirth related to the baby. Postpartum blues is like an iceberg that is difficult to detect because there are still many people who do not understand about the event. Nevertheless, postpartum blues not being handled properly is one of the factors precipitating the occurrence of postpartum depression,  can be fatal for mother and baby. Postpartum blues more common in women who marry in their early age. Indonesia has high percentage of early age marriage in the world (ranked 37 and is the second highest in ASEAN after Cambodia. Based on data, there was increasing number of woman cases delivering labor and having children in the village Panggungharjo Sewon Bantul from year 2013 to 2015. Research objectives are to determine the postpartum blues in labor under the age of 20 years. This study is a descriptive study with retrospective design. The study population consists of women who gave birth  under the age of 20 years in the village of Panggungharjo, Sewon, Bantul using total sampling (33 subjects. The result showed that 45.5% of respondents who experienced postpartum blues and 54.5% did not experience postpartum blues.

  5. Acute toxicity of ammonia to blue tilapia, Oreochromis aureus in ...

    African Journals Online (AJOL)

    ... 3.11 and 1.93 mg/l NH3 at 1, 8, 12, 16 and 20 ppt of salinities, respectively. The results of this study indicate that using brackish water for blue tilapia culture may not be a single factor to reduce the toxicity of high ammonia. Keywords: Oreochromis aureus, blue tilapia, ammonia, salinity. African Journal of Biotechnology, ...

  6. A review of blue carbon in the Netherlands

    NARCIS (Netherlands)

    Tamis, J.E.; Foekema, E.M.

    2015-01-01

    Blue carbon (the carbon stored in marine and coastal ecosystems – in biomass, buried in sediments and sequestered from the atmosphere and ocean) is considered as an issue of interest regarding its potential as a climate change mitigation measure in the OSPAR maritime area (OSPAR, 2015). Because blue

  7. Blue superradiance from neat semiconducting alternating copolymer films

    NARCIS (Netherlands)

    Brouwer, H.J; Krasnikov, V.V.; Hilberer, A; Hadziioannou, G

    1996-01-01

    Blue superradiant emission in thin polymer films with a low energy threshold, as reported here, offers hope for the possible development of solid-state electrically pumped polymer lasers The absorbance, emission, and fluorescence spectra of the blue-light emitting copolymer

  8. SPECIATION AND STABILITY OF METHYLENE BLUE-METAL ...

    African Journals Online (AJOL)

    a

    blood product decontamination [8] and an antidote for cyanide poisoning [9]. Methylene blue is one of the most frequently used counter ions for ion-pair formation [9, 10]. It is used for the determination of hydrogen sulfide [11, 12]. Palladium(II) was determined as ion-associated complex of thiocyanate with methylene blue ...

  9. QCD on the BlueGene/L Supercomputer

    Science.gov (United States)

    Bhanot, G.; Chen, D.; Gara, A.; Sexton, J.; Vranas, P.

    2005-03-01

    In June 2004 QCD was simulated for the first time at sustained speed exceeding 1 TeraFlops in the BlueGene/L supercomputer at the IBM T.J. Watson Research Lab. The implementation and performance of QCD in the BlueGene/L is presented.

  10. Climate change vulnerability and adaptation in the Blue Mountains

    Science.gov (United States)

    Jessica E. Halofsky; David L. Peterson

    2017-01-01

    The Blue Mountains Adaptation Partnership was developed to identify climate change issues relevant to resource management in the Blue Mountains region, to find solutions that can minimize negative effects of climate change, and to facilitate transition of diverse ecosystems to a warmer climate. Partnering organizations included three national forests (Malheur, Umatilla...

  11. Social innovation – A future pathway for Blue growth?

    NARCIS (Netherlands)

    Soma, Katrine; Burg, van den Sander; Hoefnagel, Ellen; Stuiver, Marian; Heide, van der Martijn

    2018-01-01

    The European Union has launched the Blue growth concept as a strategy for stimulating economic growth in European seas. It is accompanying the core principles of the Green growth paradigm that seek to stimulate smart, sustainable and inclusive growth of economic activities. Focusing on Blue growth,

  12. Use of simple sequence repeat (SSR) markers for screening blue ...

    African Journals Online (AJOL)

    The findings suggest the need for caution to be taken during introduction of exotic germplasm and recognize the value of resistance trait to susceptible Brazilian germplasm when breeding for blue disease resistance. Key words: Cotton blue disease, cotton single nucleotide polymorphisms (SNPs), simple sequence repeat

  13. 49 CFR 218.23 - Blue signal display.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Blue signal display. 218.23 Section 218.23... signal display. (a) Blue signals displayed in accordance with § 218.25, 218.27, or 218.29 signify that workers are on, under, or between rolling equipment. When so displayed— (1) The equipment may not be...

  14. Current distribution and population size of the Blue Swallow Hirundo ...

    African Journals Online (AJOL)

    Two surveys of Blue Swallows were conducted in the southern Tanzanian highland grasslands in order to determine the habitat preferences and estimate the size of this subpopulation. During the 2008/09 and 2012 surveys, a total distance of 3 635 km was travelled in search of Blue Swallows (at an altitude of above 1 400 ...

  15. No effect of blue on winning contests in judo

    NARCIS (Netherlands)

    Dijkstra, Peter D.; Preenen, Paul T. Y.

    2008-01-01

    A study by Rowe et al. reported a winning bias for judo athletes wearing a blue outfit relative to those wearing a white one during the 2004 Olympics. It was suggested that blue is associated with a higher likelihood of winning through differential effects of colour on opponent visibility and/or an

  16. Effects of blue light irradiation on human dermal fibroblasts.

    Science.gov (United States)

    Opländer, Christian; Hidding, Sarah; Werners, Frauke B; Born, Matthias; Pallua, Norbert; Suschek, Christoph V

    2011-05-03

    Previous studies have reported that separately from UV-radiation also blue light influences cellular physiology in different cell types. However, little is known about the blue light action spectrum. The purpose of this study was to investigate effects of blue light at distinct wavelengths (410, 420, 453, 480 nm) emitted by well defined light-emitting-diodes on viability, proliferation and antioxidative capacity of human dermal fibroblasts. We found that irradiation with blue light (410, 420 nm) led to intracellular oxidative stress and toxic effects in a dose and wavelength dependent manner. No toxicity was observed using light at 453 nm and 480 nm. Furthermore, blue light (410, 420, 453 nm) at low doses reduced the antioxidative capacity of fibroblasts. At non-toxic doses, irradiations at 410, 420 and 453 nm reduced proliferation indicating a higher susceptibility of proliferating fibroblasts to blue light. Our results show that blue light at different wavelengths may induce varying degrees of intracellular oxidative stress with different physiological outcome, which could contribute to premature skin photoaging. On the other hand, the use of blue light due to its antiproliferative and toxic properties may represent a new approach in treatment and prevention of keloids, hypertrophic scars and fibrotic skin diseases. Copyright © 2011 Elsevier B.V. All rights reserved.

  17. A paradox for air pollution controlling in China revealed by "APEC Blue" and "Parade Blue".

    Science.gov (United States)

    Liu, Haoran; Liu, Cheng; Xie, Zhouqing; Li, Ying; Huang, Xin; Wang, Shanshan; Xu, Jin; Xie, Pinhua

    2016-09-29

    A series of strict emission control measures were implemented in Beijing and surrounding regions to ensure good air quality during the 2014 Asia-Pacific Economic Cooperation (APEC) summit and 2015 Grand Military Parade (Parade), which led to blue sky days during these two events commonly referred to as "APEC Blue" and "Parade Blue". Here we calculated Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) and Ozone Monitoring Instrument (OMI) NO2 and HCHO results based on well known DOAS trace gas fitting algorithm and WRF-Chem model (with measured climatology parameter and newest emission inventor) simulated trace gases profiles. We found the NO2 columns abruptly decreased both Parade (43%) and APEC (21%) compared with the periods before these two events. The back-trajectory cluster analysis and the potential source contribution function (PSCF) proved regional transport from southern peripheral cities plays a key role in pollutants observed at Beijing. The diminishing transport contribution from southern air mass during Parade manifests the real effect of emission control measures on NO2 pollution. Based on the ratios of HCHO over NO2 we found there were not only limited the NO2 pollutant but also suppress the O3 contaminant during Parade, while O3 increased during the APEC.

  18. Temperature independent low voltage polymer stabilized blue phase liquid crystals

    Science.gov (United States)

    Kemiklioglu, E.; Hwang, J. Y.; Chien, L.-C.

    2012-03-01

    Blue phases are types of liquid crystal phase which can appear in a narrow temperature range between a chiral nematic phase and isotropic liquid phase. Blue Phase (BP) liquid crystals have been known to exist in a small temperature range. Recently, broadening the temperature range of a BP liquid crystal has occurred by using a mixture of nematic bimesogenic liquid crystals or by polymerizing a small amount of monomer in a BP to stabilize the cubic lattice against temperature variation. In this study, we report a low switching voltage polymer stabilized blue phase (PSBP) liquid crystal device. We showed the stabilization of blue phases over a temperature range of 30.4 °C including room temperature. We observed the temperature independent of Bragg wavelength. Furthermore, the polymer effect on the electo-optic properties of a self assembled nanostructured blue phase liquid crystal composites have been investigated. As well as the ratio between two monomers, the overall monomers concentration is controlled.

  19. BLUE OCEAN STRATEGY (BOS SEBAGAI PARADIGMA BARU MANAJEMEN PENDIDIKAN ISLAM

    Directory of Open Access Journals (Sweden)

    Ikhwan Fuad

    2016-08-01

    Full Text Available The focus of this article is to describe the Blue Ocean Strategy as a new paradigm of Islamic education management. the author seeks to elaborate on how the adoption of the Blue Ocean strategy of the business world to the world of education and answered the principles of what is accepted and rejected away from the theory. Adoption of blue ocean strategy is done by applying the universal principles are : among others reconstruct market boundaries, focus on the big picture rather than numbers, reach beyond existing demand, perform a series of strategies with appropriate, efforts to overcome organizational constraints and integrate execution into strategy. The principles of Blue Ocean Strategy Indicators that can be absorbed is an indicator that focuses gave excellent service and were not absorbed is a strong indicator of economic motivation. Generally, Blue Ocean Strategy quite well applied as a management paradigm of Islamic education.

  20. Degradation of bromophenol blue molecule during argon plasma jet irradiation

    Science.gov (United States)

    Matinzadeh, Ziba; Shahgoli, Farhad; Abbasi, Hamed; Ghoranneviss, Mahmood; Salem, Mohammad Kazem

    2017-06-01

    The aim of this paper is to study degradation of a bromophenol blue molecule (C19H10Br4O5S) using direct irradiation of cold atmospheric argon plasma jet. The pH of the bromophenol blue solution has been measured as well as its absorbance spectra and conductivity before and after the irradiation of non-thermal plasma jet in various time durations. The results indicated that the lengths of conjugated systems in the molecular structure of bromophenol blue decreased, and that the bromophenol blue solution was decolorized as a result of the decomposition of bromophenol blue. This result shows that non-thermal plasma jet irradiation is capable of decomposing, and can also be used for water purification.

  1. 21 CFR 133.184 - Roquefort cheese, sheep's milk blue-mold, and blue-mold cheese from sheep's milk.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Roquefort cheese, sheep's milk blue-mold, and blue-mold cheese from sheep's milk. 133.184 Section 133.184 Food and Drugs FOOD AND DRUG ADMINISTRATION... PRODUCTS Requirements for Specific Standardized Cheese and Related Products § 133.184 Roquefort cheese...

  2. 76 FR 22923 - Wellpoint, Inc. D/B/A/Anthem Blue Cross & Blue Shield Enterprise Provider Data Management Team...

    Science.gov (United States)

    2011-04-25

    ... Provider Data Management Team Including On-Site Leased Workers From Kelly Services and Jacobsen Group, et...,895 Wellpoint, Inc., D/B/A/Anthem Blue Cross & Blue Shield, Enterprise Provider Data Management Team... Wellpoint, Inc., D/B/A/Anthem Health Plans Of Kentucky, Enterprise Provider Data Management Team, Louisville...

  3. "Blue-Collar Blues" : kõigi maade töötud, ühinege! / Ants Juske

    Index Scriptorium Estoniae

    Juske, Ants, 1956-2016

    2009-01-01

    Rahvusvaheline näitus "Blue-Collar Blues" Tallinna Kunstihoones ja Kunstihoone galeriis 31. jaanuarini 2010. Kuraator Anders Härm. Näituse ajendiks on 1. juulist 2009 Eestis kehtima hakanud töölepinguseadus, näituse fookus on töösuhetel

  4. Final report on the safety assessment of Basic Blue 99.

    Science.gov (United States)

    2007-01-01

    Basic Blue 99 is a direct, nonoxidative hair colorant used in temporary and semipermanent hair dyes. According to current reported usage data, Basic Blue 99 is used at concentrations from 0.004% to 2% and the most often reported use is in hair tints. Hair dyes containing Basic Blue 99, as "coal tar" hair dye products, are exempt from the principal adulteration provision and from the color additive provision of the Federal Food, Drug, and Cosmetic Act of 1938 when the label bears a caution statement and "patch test" instructions for determining whether the product causes skin irritation. Preliminary testing on or by individuals should be done using an open patch test that is evaluated at 48 h after application of the test material. Users, therefore, would be able to determine their individual reactions to hair dye products containing Basic Blue 99. Basic Blue 99 dye is approximately 60% to 63% dye, whereas the remainder of the mixture is composed of sugar ( approximately 25.7%), volatile matter/water crystallization ( approximately 1.8%), and inorganic salts (bringing the mixture to 100%). The dermal absorption of Basic Blue 99 is low in both rats and humans. The LD(50) values of Basic Blue 99 in mice and rats were 2.7 g/kg and between 1.0 g/kg and greater than 2.0 g/kg, respectively. Mice and rats orally administered Basic Blue 99 for 90 days did not show any indications of cumulative toxicity. Discoloration of organs involved in the elimination of Basic Blue 99 from the animals was noted in both test species. In rabbits, Basic Blue 99 did not cause ocular irritation, but some discoloration was noted. Basic Blue 99 caused minimal dermal irritation in rabbits. Sensitization occurred in animals exposed to Basic Blue 99 in a DMSO vehicle, but not in a water vehicle in guinea pigs and mice. Basic Blue 99 administered by gavage did not cause developmental toxicity in rats. Basic Blue 99 was a weak mutagen with and without metabolic activation in the Ames test, producing

  5. DisBlue+: A distributed annotation-based C# compiler

    Directory of Open Access Journals (Sweden)

    Samir E. AbdelRahman

    2010-06-01

    Full Text Available Many programming languages utilize annotations to add useful information to the program but they still result in more tokens to be compiled and hence slower compilation time. Any current distributed compiler breaks the program into scattered disjoint pieces to speed up the compilation. However, these pieces cooperate synchronously and depend highly on each other. This causes massive overhead since messages, symbols, or codes must be roamed throughout the network. This paper presents two promising compilers named annotation-based C# (Blue+ and distributed annotation-based C# (DisBlue+. The proposed Blue+ annotation is based on axiomatic semantics to replace the if/loop constructs. As the developer tends to use many (complex conditions and repeat them in the program, such annotations reduce the compilation scanning time and increases the whole code readability. Built on the top of Blue+, DisBlue+ presents its proposed distributed concept which is to divide each program class to its prototype and definition, as disjoint distributed pieces, such that each class definition is compiled with only its related compiled prototypes (interfaces. Such concept reduces the amount of code transferred over the network, minimizes the dependencies among the disjoint pieces, and removes any possible synchronization between them. To test their efficiencies, Blue+ and DisBlue+ were verified with large-size codes against some existing compilers namely Javac, DJavac, and CDjava.

  6. Variation in genome composition of blue-aleurone wheat.

    Science.gov (United States)

    Burešová, Veronika; Kopecký, David; Bartoš, Jan; Martinek, Petr; Watanabe, Nobuyoshi; Vyhnánek, Tomáš; Doležel, Jaroslav

    2015-02-01

    Different blue-aleurone wheats display major differences in chromosome composition, ranging from disomic chromosome additions, substitutions, single chromosome arm introgressions and chromosome translocation of Thinopyrum ponticum. Anthocyanins are of great importance for human health due to their antioxidant, anti-inflammatory, anti-microbial and anti-cancerogenic potential. In common wheat (Triticum aestivum L.) their content is low. However, elite lines with blue aleurone exhibit significantly increased levels of anthocyanins. These lines carry introgressed chromatin from wild relatives of wheat such as Thinopyrum ponticum and Triticum monococcum. The aim of our study was to characterize genomic constitutions of wheat lines with blue aleurone using genomic and fluorescence in situ hybridization. We used total genomic DNA of Th. ponticum and two repetitive DNA sequences (GAA repeat and the Afa family) as probes to identify individual chromosomes. This enabled precise localization of introgressed Th. ponticum chromatin. Our results revealed large variation in chromosome constitutions of the blue-aleurone wheats. Of 26 analyzed lines, 17 carried an introgression from Th. ponticum; the remaining nine lines presumably carry T. monococcum chromatin undetectable by the methods employed. Of the Th. ponticum introgressions, six different types were present, ranging from a ditelosomic addition (cv. Blue Norco) to a disomic substitution (cv. Blue Baart), substitution of complete (homologous) chromosome arms (line UC66049) and various translocations of distal parts of a chromosome arm(s). Different types of introgressions present support a hypothesis that the introgressions activate the blue aleurone trait present, but inactivated, in common wheat germplasm.

  7. Methylene Blue Inhibits Caspases by Oxidation of the Catalytic Cysteine.

    Science.gov (United States)

    Pakavathkumar, Prateep; Sharma, Gyanesh; Kaushal, Vikas; Foveau, Bénédicte; LeBlanc, Andrea C

    2015-09-24

    Methylene blue, currently in phase 3 clinical trials against Alzheimer Disease, disaggregates the Tau protein of neurofibrillary tangles by oxidizing specific cysteine residues. Here, we investigated if methylene blue can inhibit caspases via the oxidation of their active site cysteine. Methylene blue, and derivatives, azure A and azure B competitively inhibited recombinant Caspase-6 (Casp6), and inhibited Casp6 activity in transfected human colon carcinoma cells and in serum-deprived primary human neuron cultures. Methylene blue also inhibited recombinant Casp1 and Casp3. Furthermore, methylene blue inhibited Casp3 activity in an acute mouse model of liver toxicity. Mass spectrometry confirmed methylene blue and azure B oxidation of the catalytic Cys163 cysteine of Casp6. Together, these results show a novel inhibitory mechanism of caspases via sulfenation of the active site cysteine. These results indicate that methylene blue or its derivatives could (1) have an additional effect against Alzheimer Disease by inhibiting brain caspase activity, (2) be used as a drug to prevent caspase activation in other conditions, and (3) predispose chronically treated individuals to cancer via the inhibition of caspases.

  8. Serotonin syndrome following methylene blue administration during cardiothoracic surgery.

    Science.gov (United States)

    Smith, Christina J; Wang, Dorothy; Sgambelluri, Anna; Kramer, Robert S; Gagnon, David J

    2015-04-01

    Despite its favorable safety profile, there have been reports of methylene blue-induced encephalopathy and serotonin syndrome in patients undergoing parathyroidectomy. We report a case of serotonin syndrome following methylene blue administration in a cardiothoracic surgery patient. A 59-year-old woman taking preoperative venlafaxine and trazodone was given a single dose of 2 mg/kg methylene blue (167 mg) during a planned coronary artery bypass and mitral valve repair. Postoperatively, she was febrile to 38.7°C and developed full-body tremors, rhythmic twitching of the perioral muscles, slow conjugate roving eye movements, and spontaneous movements of the upper extremities. Electroencephalography revealed generalized diffuse slowing consistent with toxic encephalopathy, and a computed tomography scan showed no acute process. The patient's symptoms were most consistent with a methylene blue-induced serotonin syndrome. Her motor symptoms resolved within 48 hours and she was eventually discharged home. Only 2 cases of methylene blue-induced serotonin syndrome during cardiothoracic surgery have been described in the literature, with this report representing the third case. Methylene blue and its metabolite, azure B, are potent, reversible inhibitors of monoamine oxidase A which is responsible for serotonin metabolism. Concomitant administration of methylene blue with serotonin-modulating agents may precipitate serotonin syndrome. © The Author(s) 2015.

  9. Effects of blue light and caffeine on mood.

    Science.gov (United States)

    Ekström, Johan G; Beaven, C Martyn

    2014-09-01

    Both short wavelength (blue) light and caffeine have been studied for their mood enhancing effects on humans. The ability of blue light to increase alertness, mood and cognitive function via non-image forming neuropathways has been suggested as a non-pharmacological countermeasure for depression across a range of occupational settings. This experimental study compared blue light and caffeine and aimed to test the effects of blue light/placebo (BLU), white light/240-mg caffeine (CAF), blue light/240-mg caffeine (BCAF) and white light/placebo (PLA), on mood. A randomised, controlled, crossover design study was used, in a convenience population of 20 healthy volunteers. The participants rated their mood on the Swedish Core Affect Scales (SCAS) prior to and after each experimental condition to assess the dimensions of valence and activation. There was a significant main effect of light (p = 0.009), and the combination of blue light and caffeine had clear positive effects on core effects (ES, ranging from 0.41 to 1.20) and global mood (ES, 0.61 ± 0.53). The benefits of the combination of blue light and caffeine should be further investigated across a range of applications due to the observed effects on the dimensions of arousal, valence and pleasant activation.

  10. Blue-blocking IOLs: a complete review of the literature.

    Science.gov (United States)

    Henderson, Bonnie An; Grimes, Kelly Jun

    2010-01-01

    Intraocular lenses (IOLs) that block both ultraviolet and blue wavelength light (blue light has been debated. We report the results of a complete review of all peer-reviewed published studies regarding the impact of blocking the transmission of blue light. Fifty-six published reports on subjects related to blue-blocking lenses including sleep disturbance, visual outcomes, cataract surgery, lens transmittance, sunlight exposure, and macular disease were found in peer reviewed journals from 1962 to 2009. Eleven reports specifically compared visual outcomes between blue-blocking IOLs and nonblue-locking IOLs. Of these, 10 independent studies (10/11, 91%) concluded that there are no significant effects of blue-blocking IOLs on various meters of visual performance including visual acuity, contrast sensitivity, color perception, and photopic, mesopic, and scotopic sensitivities. Only one group of authors reported that the use of blue-blocking IOLs may have detrimental effects on scotopic vision and circadian rhythms. However, the actual clinical significance of these potential negative effects on scotopic vision and on sleep patterns is uncertain. The benefits of blocking the transmission of blue light to the macula and the relationship between progression of age-related macular degeneration remain unclear. However, the published studies clearly state that the use of blue-blocking IOLs is not detrimental in visual acuity, color perception, and contrast sensitivity. The reported potential negative effects on scotopic vision and sleep disturbance appear to be minimal and may not be clinically relevant. (Surv Ophthalmol 55:284--289, 2010. 2010 Elsevier Inc. All rights reserved.)

  11. Quantum mechanical model for Maya Blue

    Science.gov (United States)

    Fuentes, María E.; Peña, Brisa; Contreras, César; Montero, Ana L.; Chianelli, Russell; Alvarado, Manuel; Olivas, Ramón; Rodríguez, Luz M.; Camacho, Héctor; Montero-Cabrera, Luis A.

    This work is about Maya Blue (MB), a pigment developed by Mesoamerican civilizations between the 5th and 16th centuries from an aluminosilicate mineral (palygorskite) and an organic dye (indigo). Two different supramolecular quantum-mechanical models afford explanations for the unusual stability of MB based on the oxidation of the indigo molecule during the heating process and its interaction with palygorskite. A model considering indigo derivatives attached to several aluminates shows the principal features of the experimental visible spectrum of MB within the TD-DFT methodology. Another model of an indigo oxidized species confined within an inorganic supramolecular cavity system, that involves about 170 atoms, was calculated after a large configuration interaction of single excited determinants within the NDOL approximation (Montero-Cabrera et al., J Chem Phys, 2007, 127, 145102). It allows a correct reproduction and interpretation of the corresponding spectrum. This second methodology provides the most satisfactory results, being able to manage very big molecular systems at a QM level. Structural explanation for the unusual stability of MB is also provided.

  12. Platinum acetate blue: synthesis and characterization.

    Science.gov (United States)

    Cherkashina, Natalia V; Kochubey, Dmitry I; Kanazhevskiy, Vladislav V; Zaikovskii, Vladimir I; Ivanov, Vladimir K; Markov, Alexander A; Klyagina, Alla P; Dobrokhotova, Zhanna V; Kozitsyna, Natalia Yu; Baranovsky, Igor B; Ellert, Olga G; Efimov, Nikolai N; Nefedov, Sergei E; Novotortsev, Vladimir M; Vargaftik, Michael N; Moiseev, Ilya I

    2014-08-18

    Platinum acetate blue (PAB) of the empirical formula Pt(OOCMe)2.5±0.25, a byproduct in the synthesis of crystalline platinum(II) acetate Pt4(OOCMe)8, is an X-ray amorphous substance containing platinum in the oxidation state between (II) and (III). Typical PAB samples were studied with X-ray diffraction, differential thermal analysis-thermogravimetric, extended X-ray absorption fine structure, scanning electron microscopy, transmission electron microscopy, magnetochemistry, and combined quantum chemical density functional theory-molecular mechanics modeling to reveal the main structural features of the PAB molecular building blocks. The applicability of PAB to the synthesis of platinum complexes was demonstrated by the preparation of the new homo- and heteronuclear complexes Pt(II)(dipy)(OOCMe)2 (1), Pt(II)(μ-OOCMe)4Co(II)(OH2) (2), and Pt(III)2(OOCMe)4(O3SPhMe)2 (3) with the use of PAB as starting material.

  13. Blue photoluminescent carbon nanodots from limeade.

    Science.gov (United States)

    Suvarnaphaet, Phitsini; Tiwary, Chandra Sekhar; Wetcharungsri, Jutaphet; Porntheeraphat, Supanit; Hoonsawat, Rassmidara; Ajayan, Pulickel Madhavapanicker; Tang, I-Ming; Asanithi, Piyapong

    2016-12-01

    Carbon-based photoluminescent nanodot has currently been one of the promising materials for various applications. The remaining challenges are the carbon sources and the simple synthetic processes that enhance the quantum yield, photostability and biocompatibility of the nanodots. In this work, the synthesis of blue photoluminescent carbon nanodots from limeade via a single-step hydrothermal carbonization process is presented. Lime carbon nanodot (L-CnD), whose the quantum yield exceeding 50% for the 490nm emission in gram-scale amounts, has the structure of graphene core functionalized with the oxygen functional groups. The micron-sized flake of the as-prepared L-CnD powder exhibits multicolor emission depending on an excitation wavelength. The L-CnDs are demonstrated for rapidly ferric-ion (Fe(3+)) detection in water compared to Fe(2+), Cu(2+), Co(2+), Zn(2+), Mn(2+) and Ni(2+) ions. The photoluminescence quenching of L-CnD solution under UV light is used to distinguish the Fe(3+) ions from others by naked eyes as low concentration as 100μM. Additionally, L-CnDs provide exceptional photostability and biocompatibility for imaging yeast cell morphology. Changes in morphology of living yeast cells, i.e. cell shape variation, and budding, can be observed in a minute-period until more than an hour without the photoluminescent intensity loss. Copyright © 2016 Elsevier B.V. All rights reserved.

  14. Star formation in blue compact dwarf Galaxies

    Science.gov (United States)

    Ramya, S.; Prabhu, T. P.; Sahu, D. K.

    Blue compact dwarf galaxies (BCDGs) are dwarfs undergoing current burst of star formation (SF). In our work, we determine the ages of the underlying old stellar population to be ˜4 Gyr that is dominating the mass of the galaxy, underlying the current burst of SF. An intermediate population of ˜500 Myr which dominates the stellar light from the galaxy is also detected. The burst of SF at the present epoch spans ˜10 Myr as estimated from various age estimators like Hα, diagnostic diagrams and colour-colour diagrams. BCDGs undergo a burst of SF for a longer duration (of about a few 100 Myr to a Gyr) followed by a short/long quiescence. The amount of column density of localized neutral hydrogen required for the current burst to occur seems to be 10^{21} cm^{-2}. This could be the threshold required for SF. Radio continuum emission reveals that the emission is coincident with the star forming regions. The star formation rates (SFR) estimated from Hα match well with the SFR estimated using non-thermal radio emission for individual star forming regions, but are ˜6-7 times less as compared to the SFR calculated from far-IR (FIR) emission.

  15. Blue Sky Birds Come to the World

    Directory of Open Access Journals (Sweden)

    Bura Sabiha Kelek

    2015-06-01

    Full Text Available The New Supply System comes to all fields for logistics.Drone is an unmanned vehicle for loading and unloading packages.Perhaps we can imagine it as a ‘’blue sky bird’’. This new trend has three important impacts that are determined by technoligical capabilities, ,regularity pressure, and public acceptance so that it will be dealed within current powers and circumstances. This kind of vehicles are used in different capacities, such as multicopter,drone or robot.Logistics’ issues are interested in short-term delivery systems for customer satisfaction but all developments go through GPS so it is based on 21st century technological developments, which have been tested on a short-term basis and will be expected to be of use in 2 years. The purpose of this research is to give lead to researchers information about risk and the advantages of using the technology in this manner.Some advantages and disadvantages ,schedules’ problems in the system will be identifed.

  16. Need your love so bad: Los poemas amorosos de Catulo en las letras de blues.

    OpenAIRE

    Joaquín Villalba Álvarez

    2008-01-01

    En el 32, Ellington grabó Baby when you ain't there, uno de sus temas menos alabados y al que el fiel Barry Ulanov no dedica mención especial. Con voz curiosamente seca canta Cootie Williams los versos: I get the blues down North, The blues down South, Blues anywhere, I get the blues down East, Blues down West, Blues anywhere. I get the blues very well O my baby when you ain't there ain't there, ain't there ¿Por qué, a ciertas horas, es tan necesario decir: "Amé esto?" Amé unos blues, una i...

  17. Blue LED light as a new hygienic problem

    OpenAIRE

    V.A. Kaptsov; V.N. Deinego

    2016-01-01

    The conditions for the formation of an excess dose of blue light produced by the LED lighting were examined. It is shown that light-biological safety assessment carried out in accordance with GOST R IEC 62471-2013 need to be clarified, taking into account changes in the pupil of eye’s diameters when LED lighting and spatial distribution of the light-absorbing blue light (460 nm) of the pigment in the macula influences it. Methodical principles of calculation of an excess dose of blue light in...

  18. CHEMICAL AND BIOLOGICAL PROPERTIES OF THE LAKE BLUE CLAY

    OpenAIRE

    Tretjakova, Rasma; Misiņa, Samanta Marija; Lukašenoks, Jevgenijs

    2017-01-01

    In this paper the chemical and biological properties of the lake blue clay are explored. A blue clay bed layer was found under the sapropel layer in the lake Plusons (area 4.8 km2, Ludza countries, Latvia). It has been determined that the lake Plusons blue clay has a colloid composition, which contains Na, Mg, K, Ca, Fe, Cr, Mn, Co, Ni, Cu, Zn, Cd, Pb, Al, Ag, Ba. In samples Candida albicans, Pseudomona aeruginosa, Staphylococcus aureus and a total number of aerobic mezofile bacterium have b...

  19. Methylene blue-related corneal edema and iris discoloration.

    Science.gov (United States)

    Timucin, Ozgur Bulent; Karadag, Mehmet Fatih; Aslanci, Mehmet Emin; Baykara, Mehmet

    2016-04-01

    We report the case of a 70-year-old female patient who developed corneal edema and iris discoloration following the inadvertent use of 1% methylene blue instead of 0.025% trypan blue to stain the anterior capsule during cataract phacoemulsification surgery. Copious irrigation was performed upon realization of incorrect dye use. Corneal edema and iris discoloration developed during the early postoperative period and persisted at 24-months follow-up. However, keratoplasty was not required. The intracameral use of 1% methylene blue has a cytotoxic effect on the corneal endothelium and iris epithelium. Copious irrigation for at least 30 min using an anterior chamber maintainer may improve outcomes.

  20. The biotechnological ways of blue-green algae complex processing

    OpenAIRE

    Nykyforov, Volodymyr; Malovanyy, Myroslav; Kozlovskaya, Tatyana; Novokhatko, Olha; Digtiar, Sergii

    2016-01-01

    The results of long­term research of various ways and methods of collection and processing of blue­green algae that cause “bloom” of the Dnieper reservoirs were presented. The possibility and feasibility of the blue­green algae biomass processing to biogas by methanogenesis were substantiated. It was found experimentally that preliminary mechanical cavitation of the blue­green algae biomass increases the biogas yield by 21.5 %. It was determined that the biogas produced contains up to 72 % of...

  1. A Survey of Blue-Noise Sampling and Its Applications

    KAUST Repository

    Yan, Dongming

    2015-05-01

    In this paper, we survey recent approaches to blue-noise sampling and discuss their beneficial applications. We discuss the sampling algorithms that use points as sampling primitives and classify the sampling algorithms based on various aspects, e.g., the sampling domain and the type of algorithm. We demonstrate several well-known applications that can be improved by recent blue-noise sampling techniques, as well as some new applications such as dynamic sampling and blue-noise remeshing. © 2015, Springer Science+Business Media New York.

  2. Blue-light emitting triazolopyridinium and triazoloquinolinium salts

    KAUST Repository

    Carboni, Valentina

    2017-01-27

    Compounds that emit blue light are of interest for applications that include optoelectronic devices and chemo/biosensing and imaging. The design and synthesis of small organic molecules that can act as high-efficiency deep-blue-light emitters in the solid state and can be easily processed from solutions represents a significant challenge. Herein we present the preparation and photophysical, photochemical and electrochemical properties of a series of triazolopyridinium and triazoloquinolinium compounds. The compounds are soluble in water or polar organic solvents and exhibit photoluminescence in the blue region of the spectrum in fluid solution, in the solid state and in a frozen matrix.

  3. Combatant eye protection: an introduction to the blue light hazard

    Science.gov (United States)

    Lattimore, Morris R.

    2016-05-01

    Emerging evidence of metabolic vulnerability to visible blue light is vitally important, as it is indicative of a scalable threshold effect. Added stressors (e.g., increased altitude or contact lens wear) could shift the wavelength effects toward a more damaging clinical picture. Recent reports have indicated rod photo-pigment damage resulting from solar blue-light exposures, adversely affecting unaided night vision, a militarily important performance decrement. The activation wavelength for the daily synchronous setting of the Circadian Clock, which regulates the synchronization of all hormonal and organ systems throughout the body, falls within this blue light perceptual range.

  4. Disseminated blue naevus and malignant blue naevus associated with excessive aromatase syndrome.

    Science.gov (United States)

    Lobo, A Z C; Martin, R M; Belda, W; Michi, M M; Arnone, M; Festa-Neo, C; Sotto, M N; Vilela, M A C; Sanches, J A

    2008-08-01

    We report a case of a 17-year-old boy who had a giant congenital blue naevus with multiple satellite pigmented lesions. Later the patient developed melanoma arising in the pre-existing lesion. He also had gynaecomastia and was diagnosed as having aromatase excess syndrome. To our knowledge, the association of these two rare conditions has not been previously reported. Further studies should be performed to investigate this unusual combination, which may have a genetic, endocrine or local cutaneous link leading to its occurrence.

  5. [Seven cases of parathyroidectomy for secondary hyperparathyroidism using methylene blue: suggestion for the method of methylene blue infusion].

    Science.gov (United States)

    Kadoya, Tatsuo; Kinoshita, Yuki; Shiraishi, Munehiro; Uehara, Hirofumi; Yamamoto, Toshinori; Suetsugu, Keiko

    2014-08-01

    Intraoperative staining of the parathyroid glands with intravenously administered methylene blue is well described and has been demonstrated as an effective and safe method to facilitate parathyroidectomy. However, there have been several literatures of the development of postoperative neurological toxicity in patients who received methylene blue infusion during parathyroidectomy. We report the method of methylene blue infusion during parathyroidectomy at our institution. Seven adult patients who had undergone parathyroidectomy for secondary hyperparathyroidism associated with chronic renal failure were included in this study. Methylene blue was administered at a constant rate of 4 mg x kg(-1) x hr(-1) with a 1% solution just before the start of operation. The infusion was stopped after the first parathyroid gland was identified. The mean dose of methylene blue used was 2.2 +/- 0.8 mg x kg(-1). Consequently, the dose of methylene blue by this method could be decreased to less than half of the previously administered dose (6 mg x kg(-1)) at our institution. The dose of methylene blue used should be kept to the minimum required to identify the parathyroid glands in each case.

  6. Turnbull Blue Gel (TBG) evaluation as optical dosimeter

    Science.gov (United States)

    Borguezan Neto, E.; Batistuti, M. R.; Pavoni, J. F.; Bachmann, L.

    2017-05-01

    The radiochromic Turnbull Blue Gel (TBG) is sensitive to X- and γ-rays. When exposed to high-energy radiation, TBG can simulate biological tissues, so this gel has potential use in ionizing radiation dosimetry. After irradiation, the yellow TBG changes to the blue Turnbull Blue dye. This work aims to evaluate how TBG responds to exposure to ultraviolet, visible, and infrared radiation from the sun. The gel was irradiated with a solar simulator, which sensitized TBG and transformed it into the Turnbull Blue dye; a change in the optical absorption ensued. The fluence values delivered by the source did not provide a linear response, but it was still possible to use TBG as an optical dosimeter. In conclusion, TBG can be applied to detect solar radiation because it is sensitive enough to measure sun exposure values at time intervals of few minutes.

  7. Medicaid and Blue Cross DRG payment plans: a comparison.

    Science.gov (United States)

    Grimaldi, P L

    1985-10-01

    Six states--Michigan, New Jersey, Ohio, Pennsylvania, Utah, and Washington--have enacted DRG-based Medicaid prospective payment plans. These systems closely parallel Medicare's due to the time and expense involved in developing and implementing an alternative case-mix payment method. A comparison of peer groups, capital costs, blend factors, outlier payments, medical education costs, etc., reveals similarities and differences in the plans that these states have adopted. Ten Blue Cross/Blue Shield plans have adopted prospective payment systems, mostly without setting DRG rates. These systems differ from Medicare and Medicaid DRG systems and from each other in a variety of ways. More state Medicaid programs probably will adopt prospective payment systems similar to Medicare's and Blue Cross/Blue Shield plans will continue to modify their hospital contracts. Hospitals' efforts to contain costs will be impeded if the major insurers within a state base their prospective payment systems on different product lines or units of output.

  8. Cryptochrome blue-light photoreceptors of Arabidopsis implicated in phototropism.

    Science.gov (United States)

    Ahmad, M; Jarillo, J A; Smirnova, O; Cashmore, A R

    1998-04-16

    Phototropism-bending towards the light-is one of the best known plant tropic responses. Despite being reported by Darwin and others over a century ago to be specifically under the control of blue light, the photoreceptors mediating phototropism have remained unknown. We have characterized a blue-light photoreceptor from Arabidopsis, named CRY1 for cryptochrome 1; this photoreceptor is a flavoprotein that mediates numerous blue-light-dependent responses. In Arabidopsis, HY4 (the gene encoding CRY1) is a member of a small gene family that also encodes a related photoreceptor, CRY2, which shares considerable functional overlap with CRY1. Here we report that mutant plants lacking both the CRY1 and the CRY2 blue-light photoreceptors are deficient in the phototropic response. Transgenic Arabidopsis plants overexpressing CRY1 or CRY2 show enhanced phototropic curvature. We conclude that cryptochrome is one of the photoreceptors mediating phototropism in plants.

  9. Blue-green and green phosphors for lighting applications

    Science.gov (United States)

    Setlur, Anant Achyut; Chandran, Ramachandran Gopi; Henderson, Claire Susan; Nammalwar, Pransanth Kumar; Radkov, Emil

    2012-12-11

    Embodiments of the present techniques provide a related family of phosphors that may be used in lighting systems to generate blue or blue-green light. The phosphors include systems having a general formula of: ((Sr.sub.1-zM.sub.z).sub.1-(x+w)A.sub.wCe.sub.x).sub.3(Al.sub.1-ySi.s- ub.y)O.sub.4+y+3(x-w)F.sub.1-y-3(x-w) (I), wherein 0lighting systems, such as LEDs and fluorescent tubes, among others, to produce blue and blue/green light. Further, the phosphors may be used in blends with other phosphors, or in combined lighting systems, to produce white light suitable for illumination.

  10. Instant tooth whitening from a silica toothpaste containing blue covarine.

    Science.gov (United States)

    Collins, Luisa Z; Naeeni, Mojgan; Platten, Suzanne M

    2008-01-01

    To measure the instant whitening effect delivered immediately after brushing with a novel silica whitening toothpaste containing blue covarine. A controlled, single blind, cross-over study was performed to compare the tooth colour measured in a group of subjects at baseline and immediately after brushing with a silica whitening toothpaste containing blue covarine versus a clear gel negative control toothpaste. Measurements of tooth colour were made using a mobile non-contact camera-based digital imaging system and expressed as CIELAB and WIO whiteness index. Analysis of covariance (ANCOVA) showed that the silica whitening toothpaste containing blue covarine was significantly more effective than the negative control toothpaste (p whitening toothpaste containing blue covarine.

  11. The role of a blue ocean strategy on performance evaluation

    National Research Council Canada - National Science Library

    Mojtaba Tabari; Mehrdad Ziabari; Mona Radmard; Mahdiyeh Radmard

    2014-01-01

    .... In this way, an experimental test is conducted in the Resorts of Ramsar Green City located in the north of Iran, in which the factors of a blue ocean strategy influence on the dimensions of the BSC...

  12. THE PITFALLS OF THE BLUE OCEAN STRATEGY CANVAS

    DEFF Research Database (Denmark)

    Lindgren, Peter; Saghaug, Kristin Margrethe; Clemmensen, Suberia

    2009-01-01

    Numerous authors have developed a list of tactics and analyticaltechniques to discover new business or new business models (Markides2008)(Johnson 2008). The Blue Ocean strategy (Kim & Mauborgne 2005)have been one of these - probably one of the most important analyticaltechniques related to the area...... - it is important tounderstand the very foundation and construction of the strategy canvas -namely value.This paper addresses the question on How is value defined, measured andfrom which viewed in the Blue Ocean theory and framework. How is valuedefined and used by companies using the Blue Ocean strategy...... canvasframework? Moreover, when addressing this, what are the pitfalls relatedto these definitions of value and use of the strategy canvas. What is theimplications of the strategy canvas in the process of developing a new BMon the basis of a Blue Ocean Strategy?...

  13. Karner blue butterfly: Annual summary for Necedah National Wildlife Refuge

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — This report discusses research being conducted on the Karner blue butterfly and historic landscape changes in Necedah National Wildlife Refuge.

  14. Modelling luminous-blue-variable isolation

    Science.gov (United States)

    Aghakhanloo, Mojgan; Murphy, Jeremiah W.; Smith, Nathan; Hložek, Renée

    2017-11-01

    Observations show that luminous blue variables (LBVs) are far more dispersed than massive O-type stars, and Smith & Tombleson suggested that these large separations are inconsistent with a single-star evolution model of LBVs. Instead, they suggested that the large distances are most consistent with binary evolution scenarios. To test these suggestions, we modelled young stellar clusters and their passive dissolution, and we find that, indeed, the standard single-star evolution model is mostly inconsistent with the observed LBV environments. If LBVs are single stars, then the lifetimes inferred from their luminosity and mass are far too short to be consistent with their extreme isolation. This implies that there is either an inconsistency in the luminosity-to-mass mapping or the mass-to-age mapping. In this paper, we explore binary solutions that modify the mass-to-age mapping and are consistent with the isolation of LBVs. For the binary scenarios, our crude models suggest that LBVs are rejuvenated stars. They are either the result of mergers or they are mass gainers and received a kick when the primary star exploded. In the merger scenario, if the primary is about 19 M⊙, then the binary has enough time to wander far afield, merge and form a rejuvenated star. In the mass-gainer and kick scenario, we find that LBV isolation is consistent with a wide range of kick velocities, anywhere from 0 to ˜105 km s-1. In either scenario, binarity seems to play a major role in the isolation of LBVs.

  15. White Arctic vs. Blue Arctic: Making Choices

    Science.gov (United States)

    Pfirman, S. L.; Newton, R.; Schlosser, P.; Pomerance, R.; Tremblay, B.; Murray, M. S.; Gerrard, M.

    2015-12-01

    As the Arctic warms and shifts from icy white to watery blue and resource-rich, tension is arising between the desire to restore and sustain an ice-covered Arctic and stakeholder communities that hope to benefit from an open Arctic Ocean. If emissions of greenhouse gases to the atmosphere continue on their present trend, most of the summer sea ice cover is projected to be gone by mid-century, i.e., by the time that few if any interventions could be in place to restore it. There are many local as well as global reasons for ice restoration, including for example, preserving the Arctic's reflectivity, sustaining critical habitat, and maintaining cultural traditions. However, due to challenges in implementing interventions, it may take decades before summer sea ice would begin to return. This means that future generations would be faced with bringing sea ice back into regions where they have not experienced it before. While there is likely to be interest in taking action to restore ice for the local, regional, and global services it provides, there is also interest in the economic advancement that open access brings. Dealing with these emerging issues and new combinations of stakeholders needs new approaches - yet environmental change in the Arctic is proceeding quickly and will force the issues sooner rather than later. In this contribution we examine challenges, opportunities, and responsibilities related to exploring options for restoring Arctic sea ice and potential pathways for their implementation. Negotiating responses involves international strategic considerations including security and governance, meaning that along with local communities, state decision-makers, and commercial interests, national governments will have to play central roles. While these issues are currently playing out in the Arctic, similar tensions are also emerging in other regions.

  16. Genotoxicity of furan in Big Blue rats.

    Science.gov (United States)

    McDaniel, L Patrice; Ding, Wei; Dobrovolsky, Vasily N; Shaddock, Joseph G; Mittelstaedt, Roberta A; Doerge, Daniel R; Heflich, Robert H

    2012-02-18

    Furan is a multispecies liver carcinogen whose cancer mode of action (MOA) is unclear. A major metabolite of furan is a direct acting mutagen; however, it is not known if genotoxicity is a key step in the tumors that result from exposure to furan. In order to address this question, transgenic Big Blue rats were treated by gavage five times a week for 8 weeks with two concentrations of furan used in cancer bioassays (2 and 8mg/kg), and with two higher concentrations (16 and 30mg/kg). Peripheral blood samples taken 24h after the 5th dose (1 week of dosing) were used to assay for micronucleus (MN) frequency in normochromatic erythrocytes (NCEs) and reticulocytes (RETs), and Pig-a gene mutation in total red blood cells (RBCs). 24h after the last dose of the 8-week treatment schedule, the rats were euthanized, and their tissues were used to perform NCE and RET MN assays, the Pig-a RBC assay, Pig-a and Hprt lymphocyte gene mutation assays, the liver cII transgene mutation assay, and the liver Comet assay. The responses in the MN assays conducted at both sampling times, and all the gene mutation assays, were uniformly negative; however, the Comet assay was positive for the induction of liver DNA damage. As the positive responses in the Comet assay were seen only with doses in excess of the cancer bioassay doses, and at least one of these doses (30mg/kg) produced toxicity in the liver, the overall findings from the study are consistent with furan having a predominantly nongenotoxic MOA for cancer. Published by Elsevier B.V.

  17. [Baby blues: characterization and influence of psycho-social factors].

    Science.gov (United States)

    M'baïlara, K; Swendsen, J; Glatigny-Dallay, E; Dallay, D; Roux, D; Sutter, A L; Demotes-Mainard, J; Henry, C

    2005-01-01

    Within days following birth, most women are showing signs of mood changes, commonly named baby blues. Due to the frequency of this condition, baby blues is considered as a physiological state probably associated to biological modifications. Some studies have shown an existing link between the intensity of the baby blues and post-partum mood disorder. Therefore, it seems important to report and explore in more details the clinical background related the condition. The aim of this study was to demonstrate the possibility of a link between the intensity of the baby blues and some specific factors like maternal self-esteem, maternal childcare stress and social background, and also to define the symptoms of the baby blues from core dimensions in mood disorders. Mothers were recruited few hours before giving birth in a teaching hospital. At the third day following birth, an appointment was made to obtain the necessary information (past medical history and social history) and history of previous mood disorders. The mood was evaluated from the scale of the intensity of baby blues from Kennerly and Gath (1989). Moreover, evaluations at day 3 and week 6 post birth of self-esteem in relation to motherhood (Maternal self-report Inventory from Shea and Tronick, 1988), stress in relation with the care of the baby (Childcare Stress Inventory from Cutrona, 1983) and the social support (Social Support scale from Bruchon-Schweitzer, 1998) were undertaken. 95 women were included in the final sample. The intensity of the baby blues was explained by the type of pregnancy (p=0.002), a low maternal self-esteem (p=0.025), high levels of stress in relation to the care of the baby (p=0.074). The basic clinical characteristic of the baby blues seems to be due to an increase in the emotional reaction with a sharp feelings, leading to a lability rather than an affect sad tonality. The baby blues seems to be a physiological process whereby the intensity is influenced by psychological factors

  18. How bees distinguish patterns by green and blue modulation.

    Science.gov (United States)

    Horridge, Adrian

    2015-01-01

    In the 1920s, Mathilde Hertz found that trained bees discriminated between shapes or patterns of similar size by something related to total length of contrasting contours. This input is now interpreted as modulation in green and blue receptor channels as flying bees scan in the horizontal plane. Modulation is defined as total contrast irrespective of sign multiplied by length of edge displaying that contrast, projected to vertical, therefore, combining structure and contrast in a single input. Contrast is outside the eye; modulation is a phasic response in receptor pathways inside. In recent experiments, bees trained to distinguish color detected, located, and measured three independent inputs and the angles between them. They are the tonic response of the blue receptor pathway and modulation of small-field green or (less preferred) blue receptor pathways. Green and blue channels interacted intimately at a peripheral level. This study explores in more detail how various patterns are discriminated by these cues. The direction of contrast at a boundary was not detected. Instead, bees located and measured total modulation generated by horizontal scanning of contrasts, irrespective of pattern. They also located the positions of isolated vertical edges relative to other landmarks and distinguished the angular widths between vertical edges by green or blue modulation alone. The preferred inputs were the strongest green modulation signal and angular width between outside edges, irrespective of color. In the absence of green modulation, the remaining cue was a measure and location of blue modulation at edges. In the presence of green modulation, blue modulation was inhibited. Black/white patterns were distinguished by the same inputs in blue and green receptor channels. Left-right polarity and mirror images could be discriminated by retinotopic green modulation alone. Colors in areas bounded by strong green contrast were distinguished as more or less blue than the

  19. Golf Blue-e-Motion. The electric Volkswagen; Golf Blue-e-Motion. Der elektrische Volkswagen

    Energy Technology Data Exchange (ETDEWEB)

    Hadler, Jens; Neusser, Heinz-Jakob; Jelden, Hanno; Lueck, Peter; Tousen, Jonas [Volkswagen AG, Wolfsburg (Germany)

    2012-11-01

    The particular challenges of our time require a consistent focus on the development activities of powertrain technologies with continuously reduced fuel consumption and CO2 emissions. The past years have seen many technological milestones by Volkswagen's Powertrain Development as illustrated by the exceptional success of the TSI and TDI engines as well as the double clutch transmissions. As a part of this comprehensive list of powertrain strategy, the development of drivetrains for alternative fuels, such as CNG, has also been included. With particular emphasis Volkswagen is pressing forward the electrification of the drivetrain with the goal of appealing to more customers through these new technologies. A milestone of the electrification activity is the Golf Blue-e-Motion, in which the comfort and especially the city driving performance are improved compared with the conventional vehicle. This driving performance is achieved by an electric drivetrain which consists of a permanent magnet synchronous electric motor together with associated power electronics and a Li-Ion battery. This presentation will pay particular attention to the characteristics of the drivetrain system and its components. The efficient powertrain including the recovering of braking energy (recuperation) as well as the attention paid on optimising all system components, has increased the driving range of the vehicle. Environmental awareness and driving pleasure - the electric drivetrain of the Golf Blue-e-Motion shows that these both requirements are possible to be realised by an electric drivetrain. (orig.)

  20. Blue space geographies:Enabling health in place

    OpenAIRE

    Foley, Ronan

    2015-01-01

    Drawing from research on therapeutic landscapes and relationships between environment,health and wellbeing, we propose the idea of ‘healthy blue space’ as an important new development Com plementing research on healthy green space,blue space is defined as; ‘health-enabling places and spaces, where water is at the centre of arange of environments with identifiable potential for the promotion of human well being’. Using theoretical ideas from emotional and relational geographies an...

  1. Blue Mountain Lake, New York, earthquake of October 7, 1983.

    Science.gov (United States)

    Wendt, G.

    1984-01-01

    The October 7 earthquake near Blue Mountain Lake in the central Adirondack Mountains registered a preliminary Richter magnitude of 5.2. It was widely felt throughout the Northeastern United States and Canada and occurred in an area that has been periodically shaken by earthquakes throughout recorded history. Since 1737, at least 346 felt earthquakes have occurred in New York; an earthquake of similar magnitude last shook the Blue Mountain Lake area on June 9, 1975.    

  2. Distribution patterns and migratory behavior of Antarctic blue whales

    OpenAIRE

    Thomisch, Karolin

    2016-01-01

    After having been one of the primary targets of commercial whaling during the 20th century, Antarctic blue whales (Balaenoptera musculus intermedia) are still listed as critically endangered by the International Union for Conservation of Nature and many aspects of their distribution and migration patterns remain poorly understood to date. This dissertation investigates spatio-temporal patterns in the (acoustic) presence of Antarctic blue whales in the Atlantic sector of the Southern Ocean and...

  3. Movements of Blue Sharks (Prionace glauca) across Their Life History

    OpenAIRE

    Vandeperre, Frederic; Aires-da-Silva, Alexandre; Fontes, Jorge; Santos, Marco; Serrão Santos, Ricardo; Afonso, Pedro

    2014-01-01

    Spatial structuring and segregation by sex and size is considered to be an intrinsic attribute of shark populations. These spatial patterns remain poorly understood, particularly for oceanic species such as blue shark (Prionace glauca), despite its importance for the management and conservation of this highly migratory species. This study presents the results of a long-term electronic tagging experiment to investigate the migratory patterns of blue shark, to elucidate how these patterns chang...

  4. Compete or Leapfrog: Creating Blue Ocean through Entrepreneurial Orientation

    OpenAIRE

    Arslan Ayub; Muhammad Salman Aslam; Hanan Iftekhar; Adeel Razzaq; Sabiha Hafeez

    2013-01-01

    The study analyzes the role of entrepreneurial orientation with mediating effect of knowledge creation process to creating Blue Ocean in corporate sector in Pakistan There is an increasing competition among companies due to globalization and technological advancements. Thus, it requires a study to measure the multifaceted influence of entrepreneurial orientation on knowledge creation process and Blue Ocean besides the actual paradigm of this terminology. This concept has been well discussed i...

  5. Power-Scalable Blue-Green Bessel Beams

    Science.gov (United States)

    2016-02-23

    building system to achieve emission at the desired blue colours, was, however, abandoned due to lack of funds relative to the original anticipated award...with a white tick mark, and thoe abandoned as decribed above, are shown with a red cross. Fig. 4: Gantt chart showing overall program goals and...8(c) and (d). As the radial mode order increases, the zero dispersion wavelength shifts blue [9], though Aeff is not strongly affected by mode

  6. Blue whale earplug reveals lifetime contaminant exposure and hormone profiles

    OpenAIRE

    Trumble, Stephen J.; Robinson, Eleanor M.; Berman-Kowalewski, Michelle; Potter, Charles W.; Usenko, Sascha

    2013-01-01

    Currently, obtaining lifetime chemical profiles (i.e., from birth to death) is extremely rare and difficult for most of Earth’s animals. We have developed a unique approach to quantify hormone and contaminant lifetime profiles for an individual blue whale with a 6-mo resolution using the wax earplug as a natural matrix capable of archiving and preserving these temporal profiles. Using a male blue whale earplug, chemical analysis reveals lifetime patterns of mercury and organic pollutant expos...

  7. Code Blue Emergencies: A Team Task Analysis and Educational Initiative.

    Science.gov (United States)

    Price, James W; Applegarth, Oliver; Vu, Mark; Price, John R

    2012-01-01

    The objective of this study was to identify factors that have a positive or negative influence on resuscitation team performance during emergencies in the operating room (OR) and post-operative recovery unit (PAR) at a major Canadian teaching hospital. This information was then used to implement a team training program for code blue emergencies. In 2009/10, all OR and PAR nurses and 19 anesthesiologists at Vancouver General Hospital (VGH) were invited to complete an anonymous, 10 minute written questionnaire regarding their code blue experience. Survey questions were devised by 10 recovery room and operation room nurses as well as 5 anesthesiologists representing 4 different hospitals in British Columbia. Three iterations of the survey were reviewed by a pilot group of nurses and anesthesiologists and their feedback was integrated into the final version of the survey. Both nursing staff (n = 49) and anesthesiologists (n = 19) supported code blue training and believed that team training would improve patient outcome. Nurses noted that it was often difficult to identify the leader of the resuscitation team. Both nursing staff and anesthesiologists strongly agreed that too many people attending the code blue with no assigned role hindered team performance. Identifiable leadership and clear communication of roles were identified as keys to resuscitation team functioning. Decreasing the number of people attending code blue emergencies with no specific role, increased access to mock code blue training, and debriefing after crises were all identified as areas requiring improvement. Initial team training exercises have been well received by staff.

  8. Evaluating the blue-light hazard from solid state lighting.

    Science.gov (United States)

    Bullough, John D; Bierman, Andrew; Rea, Mark S

    2017-10-06

    New light sources including light-emitting diodes (LEDs) have elicited questions about retinal damage, including the blue-light hazard. Some organizations have recommended avoiding using LEDs with correlated color temperatures exceeding 3000 K, since they tend to produce greater short-wavelength energy. This article provides quantitative comparisons among light sources and use cases as they affect the blue-light hazard. The spectral radiant power characteristics of incandescent, fluorescent, LED and daylight sources were evaluated in terms of blue-light hazard using standard procedures for phakic, aphakic and pseudophakic eyes. Under most use cases, LEDs do not exhibit greater risk for the blue-light hazard than other sources (e.g., incandescent). Because they generally produce little to no ultraviolet energy, LEDs often present less risk to aphakic eyes. LEDs present no special concerns for the blue-light hazard over some other common sources in typical use cases because photophobic responses limit exposure to bright sources. Where photophobic responses might not occur (e.g., eye surgery patients or premature infants) or where individuals suppress these responses (e.g., stage actors), caution is necessary. Evidence remains inconsistent regarding the risk of human retinal damage from long-term exposures to light insufficient to reach acute blue-light hazard thresholds.

  9. Decolorization of methylene blue in aqueous suspensions of titanium peroxide.

    Science.gov (United States)

    Ogino, Chiaki; Dadjour, Mahmoud Farshbaf; Iida, Yasuo; Shimizu, Nobuaki

    2008-05-01

    The pretreatment of TiO(2)-photocatalysts in solutions of H(2)O(2) was studied by examining the decolorization of methylene blue in the dark. Incubation of TiO(2) particles in H(2)O(2) solutions increased the oxidizing capacity of TiO(2). Methylene blue (0.3 mM) was degraded in the presence of pretreated TiO(2), and a decolorizing ratio of 47% was obtained after a 48-h incubation period in the presence of 5.0 g/L pretreated TiO(2). Titanium peroxide as a stable oxidant, which can be synthesized with the reaction of titanium sulfate and H(2)O(2), was studied in the decolorizing process of methylene blue. Concentrations of methylene blue were significantly reduced in the presence of titanium peroxide, and a greater extent of decolorization was obtained with larger amounts of titanium peroxide. A 63% decrease in methylene blue concentration was achieved in 5h incubation in the presence of 4.0 g/L titanium peroxide. H(2)O(2) accelerated the decolorizing process in the presence of titanium peroxide. The addition of 100 mM H(2)O(2) to a methylene blue solution containing 2.0 g/L titanium peroxide increased the decolorizing ratio to 85% after 5 h incubation. The addition of a hydroxyl radical scavenger, dimethyl sulfoxide, significantly decreased the decolorizing ratio, indicating the role of hydroxyl radicals in the oxidation process.

  10. Hypnosis-associated blue-tinted vision: a case report

    Directory of Open Access Journals (Sweden)

    Savedoff Aaron D

    2005-12-01

    Full Text Available Abstract Background Self-hypnosis has been taught routinely at the SUNY Upstate Medical University for treatment of pulmonary symptoms thought to be amenable to psychological therapy. While using hypnosis for relaxation, four individuals, including a patient with cystic fibrosis, reported development of blue-tinted vision. Based on a search of the literature, we believe this is the first published report of hypnosis-associated blue-tinted vision. Case presentation The patient reported blue-tinted vision when he used hypnosis on an almost daily basis for seven years. The visual change typically occurred when he was relaxed. Moreover, a concurrent erection in the absence of sexual thoughts usually was present. The other three individuals reported blue-tinted vision after learning how to use hypnosis for relaxation as part of a group hypnosis instruction. Conclusion The blue-tinted vision experienced by the individuals in this report may be the result of an hypnosis-induced primary change in cognitive processing. Additionally, as the relaxing effect of hypnosis can be associated with a reduction in blood pressure and increased blood flow, hypnosis-associated blue-tinted vision also may be related to retinal vasodilation.

  11. Blue whale vocalizations recorded around New Zealand: 1964-2013.

    Science.gov (United States)

    Miller, Brian S; Collins, Kym; Barlow, Jay; Calderan, Susannah; Leaper, Russell; McDonald, Mark; Ensor, Paul; Olson, Paula A; Olavarria, Carlos; Double, Michael C

    2014-03-01

    Previous underwater recordings made in New Zealand have identified a complex sequence of low frequency sounds that have been attributed to blue whales based on similarity to blue whale songs in other areas. Recordings of sounds with these characteristics were made opportunistically during the Southern Ocean Research Partnership's recent Antarctic Blue Whale Voyage. Detections of these sounds occurred all around the South Island of New Zealand during the voyage transits from Nelson, New Zealand to the Antarctic and return. By following acoustic bearings from directional sonobuoys, blue whales were visually detected and confirmed as the source of these sounds. These recordings, together with the historical recordings made northeast of New Zealand, indicate song types that persist over several decades and are indicative of the year-round presence of a population of blue whales that inhabits the waters around New Zealand. Measurements of the four-part vocalizations reveal that blue whale song in this region has changed slowly, but consistently over the past 50 years. The most intense units of these calls were detected as far south as 53°S, which represents a considerable range extension compared to the limited prior data on the spatial distribution of this population.

  12. International, prospective haemovigilance study on methylene blue-treated plasma.

    Science.gov (United States)

    Noens, L; Vilariño, Ma D; Megalou, A; Qureshi, H

    2017-05-01

    Methylene blue is a phenothiazine dye, which in combination with visible light has virucidal and bactericidal properties, disrupting the replication of a broad range of enveloped viruses and some non-enveloped viruses. The study objective was to collect data on adverse reactions occurring with methylene blue plasma administered in a routine clinical practice environment and document their characteristics and severity. This was an open label, multicentre, non-controlled, non-randomized, non-interventional study. Patients who receive a methylene blue plasma transfusion were observed for any signs and symptoms (adverse reactions) within 24 h safter the start of the transfusion, in different hospitals for a study duration of at least 1 year. A total of 19 315 methylene blue plasma units were transfused. There were eight patients with adverse reactions recorded during the study, one of them serious. Two had more than one reaction (two and four, respectively). Three patients had previous transfusions with methylene blue plasma only. Methylene blue plasma has a very acceptable safety profile with a rate of serious adverse reactions of 0·5/10 000 units. © 2017 International Society of Blood Transfusion.

  13. Methylene blue inhibits lumefantrine-resistant Plasmodium berghei.

    Science.gov (United States)

    Mwangi, Victor Irungu; Mumo, Ruth Mwende; Kiboi, Daniel Muthui; Omar, Sabah Ahmed; Ng'ang'a, Zipporah Waithera; Ozwara, Hastings Suba

    2016-06-30

    Chemotherapy still is the most effective way to control malaria, a major public health problem in sub-Saharan Africa. The large-scale use of the combination therapy artemether-lumefantrine for malaria treatment in Africa predisposes lumefantrine to emergence of resistance. There is need to identify drugs that can be used as substitutes to lumefantrine for use in combination therapy. Methylene blue, a synthetic anti-methemoglobinemia drug, has been shown to contain antimalarial properties, making it a candidate for drug repurposing. The present study sought to determine antiplasmodial effects of methylene blue against lumefantrine- and pyrimethamine-resistant strains of P. berghei. Activity of methylene blue was assessed using the classical four-day test on mice infected with lumefantrine-resistant and pyrimethamine-resistant P. berghei. A dose of 45 mg/kg/day was effective for testing ED90. Parasitemia and mice survival was determined. At 45 mg/kg/day, methylene blue sustained significant parasite inhibition, over 99%, for at least 6 days post-treatment against lumefantrine-resistant and pyrimethamine-resistant P. berghei (p = 0.0086 and p = 0.0191, respectively). No serious adverse effects were observed. Our results indicate that methylene blue at a concentration of 45 mg/kg/day confers over 99% inhibition against lumefantrine- and pyrimethamine-resistant P. berghei for six days. This shows the potential use methylene blue in the development of antimalarials against lumefantrine- and pyrimethamine-resistant parasites.

  14. Blue light-mediated inactivation of Enterococcus faecalis in vitro.

    Science.gov (United States)

    Pileggi, Giorgio; Wataha, John C; Girard, Myriam; Grad, Iwona; Schrenzel, Jacques; Lange, Norbert; Bouillaguet, Serge

    2013-05-01

    In dentistry, residual infection remains a major cause of failure after endodontic treatment; many of these infections involve Enterococcus faecalis. In the current study, we explored the possibility that blue light activated photosensitizers could be used, in principle, to inactivate this microbe as an adjunct disinfection strategy for endodontic therapy. Three blue light absorbing photosensitizers, eosin-Y, rose bengal, and curcumin, were tested on E. faecalis grown in planktonic suspensions or biofilms. Photosensitizers were incubated for 30 min with bacteria then exposed to blue light (450-500 nm) for 240 s. Sodium hypochlorite (3%) was used as a control. After 48 h, the viability of E. faecalis was estimated by measuring colony-forming units post-exposure vs. untreated controls (CFU/mL). Blue light irradiation alone did not alter E. faecalis viability. For planktonic cultures, blue light activated eosin-Y (5 μM), rose bengal (1 μM), or curcumin (5 μM) significantly (pfaecalis viability compared to exposure to the unirradiated photochemicals. For biofilm cultures, concentrations of light-activated eosin-Y, rose bengal, and curcumin of 100, 10, and 10 μM respectively, completely suppressed E. faecalis viability (p<0.05). Although the current results are limited to an in vitro model, they support further exploration of blue light activated antimicrobials as an adjunct therapy in endodontic treatment. Copyright © 2012 Elsevier B.V. All rights reserved.

  15. Final report on the safety assessment of disperse Blue 7.

    Science.gov (United States)

    2007-01-01

    Disperse Blue 7 is an anthraquinone dye used in cosmetics as a hair colorant in five hair dye and color products reported to the Food and Drug Administration (FDA). Hair dyes containing Disperse Blue 7, as "coal tar" hair dye products, are exempt from the principal adulteration provision and from the color additive provision in sections 601 and 706 of the Federal Food, Drug, and Cosmetic Act of 1938 when the label bears a caution statement and "patch test" instructions for determining whether the product causes skin irritation. Disperse Blue 7 is also used as a textile dye. The components of Disperse Blue 7 reportedly include Disperse Turquoise ALF Granules, Disperse Turquoise LF2G, Reax 83A, Tamol SW, and Twitchell Oil. No data were available that addressed the acute, short-term, or chronic toxicity of Disperse Blue 7. A mouse lymph node assay used to predict the sensitization potential of Disperse Blue 7 was negative. Although most bacterial assays for genotoxicity were negative in the absence of metabolic activation, consistently positive results were found with metabolic activation in Salmonella strains TA1537, TA1538, and TA98, which were interpreted as indicative of point mutations. Studies using L5178Y mouse lymphoma cells appeared to confirm this mutagenic activity. Mammalian assays for chromosome damage, however, were negative and animal tests found no evidence of dominant lethal mutations. Cases reports describe patients patch tested with Disperse Blue 7 to determine the source of apparent adverse reactions to textiles. In most patients, patch tests were negative, but there are examples in which the patch test for Disperse Blue 7 was positive. In general, anthraquinone dyes are considered frequent causes of clothing dermatitis. The Cosmetic Ingredient Review Expert Panel determined that there was a paucity of data regarding the safety of Disperse Blue 7 as used in cosmetics. The following data are needed in order to arrive at a conclusion on the safety of

  16. Structure of a Precursor to the Blue Components Produced in the Blue Discoloration in Japanese Radish (Raphanus sativus) Roots.

    Science.gov (United States)

    Teranishi, Katsunori; Masayasu, Nagata

    2016-05-27

    The internal blue discoloration in Japanese radish (Raphanus sativus L.) roots has been reported to be a physiological phenomenon after harvest and poses a significant problem for farmers. To avoid this discoloration, the fundamental development of new radish cultivars that do not undergo discoloration and/or improved cultivation methods is required. Elucidating the chemical mechanism leading to this discoloration could help overcome these difficulties. To determine the mechanism underlying this discoloration, this study was designed to probe the structure of a precursor to the blue components generated during the discoloration process. Soaking fresh roots in aqueous H2O2 resulted in rapid blue discoloration, similar to the natural discoloration. Using a H2O2-based blue discoloration assay, the precursor was extracted and isolated from the fresh roots and identified as the glucosinolate, 4-hydroxyglucobrassicin, via spectroscopy and chemical synthesis.

  17. Fast Blue RR-Siloxane Derivatized Materials Indicate Wound Infection Due to a Deep Blue Color Development.

    Science.gov (United States)

    Schiffer, Doris; Tegl, Gregor; Vielnascher, Robert; Weber, Hansjoerg; Schoeftner, Rainer; Wiesbauer, Herfried; Sigl, Eva; Heinzle, Andrea; Guebitz, Georg M

    2015-09-25

    There is a strong need for simple and fast methods for wound infection determination. Myeloperoxidase, an immune system-derived enzyme was found to be a suitable biomarker for wound infection. Hence, alkoxysilane-derivatized Fast Blue RR was immobilized via simple hydrolytic polymerization. The resulting enzyme-responsive siloxane layers were incubated with myeloperoxidase, wound fluid or hemoglobin. The reaction was monitored via HPLC measurements and the color development quantified spectrophotometrically. Myeloperoxidase was indeed able to oxidize immobilized Fast Blue RR leading to a blue colored product. No conversion was detected in non-infected wound fluids. The visible color changes of these novel materials towards blue enable an easy distinction between infected and non-infected wound fluids.

  18. Fast Blue RR—Siloxane Derivatized Materials Indicate Wound Infection Due to a Deep Blue Color Development

    Directory of Open Access Journals (Sweden)

    Doris Schiffer

    2015-09-01

    Full Text Available There is a strong need for simple and fast methods for wound infection determination. Myeloperoxidase, an immune system-derived enzyme was found to be a suitable biomarker for wound infection. Hence, alkoxysilane-derivatized Fast Blue RR was immobilized via simple hydrolytic polymerization. The resulting enzyme-responsive siloxane layers were incubated with myeloperoxidase, wound fluid or hemoglobin. The reaction was monitored via HPLC measurements and the color development quantified spectrophotometrically. Myeloperoxidase was indeed able to oxidize immobilized Fast Blue RR leading to a blue colored product. No conversion was detected in non-infected wound fluids. The visible color changes of these novel materials towards blue enable an easy distinction between infected and non-infected wound fluids.

  19. Blue shade hues: a study of blue pigments used by\\ud Romano-British wall-painters

    OpenAIRE

    Clegg, Susan

    2014-01-01

    Following an earlier study of different coloured pigments used in Roman wall-plaster paintings, this research project investigates the use of the synthetic pigment commonly\\ud known as Egyptian Blue in Romano-British wall-plaster paintings. Samples of Egyptian Blue pellets were obtained from excavations at the Romano-British sites of Fishbourne\\ud Roman Palace, near Chichester, Piddington near Northampton, Turners Hall Farm, near St Albans, and from excavations at Verulamium (Roman St Albans)...

  20. kinetics and mechanism of reaction of acidic chlorite with phenoxazine dyes, Nile blue and Meldola’s blue

    Directory of Open Access Journals (Sweden)

    L.Q. Qwabe

    2005-06-01

    Full Text Available The kinetics and mechanism of the oxidation of two phenoxazine dyes namely Nile blue (7-amino-3-diethylamino-8,9-benzo phenoxazine chloride, NB+ and Meldola’s blue (3- dimethylamino-8,9-benzo phenoxazine chloride, MB+ with acidic chlorite and hypochlorous acid have been investigated using a UV-visible and a stopped flow equipment. For both Nile blue and Meldola’s blue reactions the rates have first-order dependence on each substrate, chlorite and acid. Both reactions showed negative salt effect indicating the reaction is between the oppositely charged species, likely the substrate cation and chlorite anion. The acidic chlorite reaction with MB+ was very slow compared with NB+ and was studied at higher temperature of 40 oC. The overall third order rate constants for the reaction of acidic chlorite with Nile blue and Meldola’s blue were (0.363 plus or minus 0.005 M-2 s-1 at 25 oC and (3.09 plus or minus 0.08 x 10-3 M-2 s-1 at 40 oC, respectively. The energy parameters for NB+ reaction were Ea = 47.8 kJ mol-1, H = 40.4 kJ mol-1 and S = -233 J K-1 mol-1, while the corresponding values for MB+ reaction were 62.4 kJ mol-1, 54.6 kJ mol-1 and -248 J K-1 mol-1, respectively. The second-order rate coefficients for HOCl reaction with Nile blue and Meldola’s blue at 25 oC were (5.14 plus or minus 0.01 x 103 M-1 s-1 and (1.25 plus or minus 0.03 x 102 M-1 s-1, respectively.

  1. University of Geneva honours LHC project leader Lyn Evans at 450th anniversary ceremony. The honorary degrees, which recognize endeavours in human rights and in fostering dialogue between nations, were also awarded to Mary Robinson, Desmond Tutu, as well as Pascal Lamy .

    CERN Multimedia

    Maximilien Brice

    2009-01-01

    University of Geneva honours LHC project leader Lyn Evans at 450th anniversary ceremony. The honorary degrees, which recognize endeavours in human rights and in fostering dialogue between nations, were also awarded to Mary Robinson, Desmond Tutu, as well as Pascal Lamy .

  2. Characterization and utilization of Prussian blue and its pigments.

    Science.gov (United States)

    Grandjean, Fernande; Samain, Louise; Long, Gary J

    2016-11-15

    This review deals with our long-range goal of determining why the Prussian blue pigments, typically either the "soluble" KFe(III)[Fe(II)(CN)6]·xH2O or the alternative "insoluble" Fe[Fe(II)(CN)6]3·xH2O compounds, used by artists from shortly after the discovery of Prussian blue in 1704 and well into the early twentieth century, often fade when exposed to light. In order to achieve this goal it was decided that first, for comparison purposes, we had to prepare and fully characterize Prussian blues prepared by various, often commercially successful, synthetic methods. The characterization has employed a large variety of modern methods to determine both the stoichiometry of the Prussian blues and the arrangement of the voids found in the latter "insoluble" Prussian blues. The refinement of synchrotron radiation derived X-ray powder diffraction data obtained for a formally soluble and an insoluble Prussian blue required refinement in the Pm3[combining macron]m space group and lead to the K1.9[FeFe(CN)18]·{1.9 OH + 7.0H2O}, 1, and FeFe(CN)18·11.0H2O, 2, stoichiometries. The former compound, 1, exhibits an apparently random iron(ii) long-range void arrangement, whereas 2 exhibits a more non-random long-range arrangement, however, a pair distribution function analysis indicates a short-range ordering of the voids in both compounds. After further detailed characterization of many Prussian blue samples, painted samples on linen canvas, were subjected to accelerated light exposure for up to 800 hours either as pure Prussian blues or mixed with (PbCO3)2Pb(OH)2, ZnO or TiO2, the white pigments often used by artists to lighten the intense Prussian blue colour. The results indicate that the first two of these white pigments play a significant role in the fading of the colour of Prussian blues. In order to achieve our long-range goal, several Prussian blue samples were prepared from "ancient" recipes published in 1758 and 1779. These so-called "ancient" samples, painted in a

  3. Global Monthly Water Scarcity: Blue Water Footprints versus Blue Water Availability

    Science.gov (United States)

    Hoekstra, Arjen Y.; Mekonnen, Mesfin M.; Chapagain, Ashok K.; Mathews, Ruth E.; Richter, Brian D.

    2012-01-01

    Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by considering monthly rather than annual values. We analyzed 405 river basins for the period 1996–2005. In 201 basins with 2.67 billion inhabitants there was severe water scarcity during at least one month of the year. The ecological and economic consequences of increasing degrees of water scarcity – as evidenced by the Rio Grande (Rio Bravo), Indus, and Murray-Darling River Basins – can include complete desiccation during dry seasons, decimation of aquatic biodiversity, and substantial economic disruption. PMID:22393438

  4. Global monthly water scarcity: blue water footprints versus blue water availability.

    Science.gov (United States)

    Hoekstra, Arjen Y; Mekonnen, Mesfin M; Chapagain, Ashok K; Mathews, Ruth E; Richter, Brian D

    2012-01-01

    Freshwater scarcity is a growing concern, placing considerable importance on the accuracy of indicators used to characterize and map water scarcity worldwide. We improve upon past efforts by using estimates of blue water footprints (consumptive use of ground- and surface water flows) rather than water withdrawals, accounting for the flows needed to sustain critical ecological functions and by considering monthly rather than annual values. We analyzed 405 river basins for the period 1996-2005. In 201 basins with 2.67 billion inhabitants there was severe water scarcity during at least one month of the year. The ecological and economic consequences of increasing degrees of water scarcity--as evidenced by the Rio Grande (Rio Bravo), Indus, and Murray-Darling River Basins--can include complete desiccation during dry seasons, decimation of aquatic biodiversity, and substantial economic disruption.

  5. Blue and grey water footprint of textile industry in China.

    Science.gov (United States)

    Wang, Laili; Ding, Xuemei; Wu, Xiongying

    2013-01-01

    Water footprint (WF) is a newly developed idea that indicates impacts of freshwater appropriation and wastewater discharge. The textile industry is one of the oldest, longest and most complicated industrial chains in the world's manufacturing industries. However, the textile industry is also water intensive. In this paper, we applied a bottom-up approach to estimate the direct blue water footprint (WFdir,blue) and direct grey water footprint (WFdir,grey) of China's textile industry at sector level based on WF methodology. The results showed that WFdir,blue of China's textile industry had an increasing trend from 2001 to 2010. The annual WFdir,blue surpassed 0.92 Gm(3)/yr (giga cubic meter a year) since 2004 and rose to peak value of 1.09 Gm(3)/yr in 2007. The original and residuary WFdir,grey (both were calculated based on the concentration of chemical oxygen demand (CODCr)) of China's textile industry had a similar variation trend with that of WFdir,blue. Among the three sub-sectors of China's textile industry, the manufacture of textiles sector's annual WFdir,blue and WFdir,grey were much larger than those of the manufacture of textile wearing apparel, footware and caps sector and the manufacture of chemical fibers sector. The intensities of WFdir,blue and WF(res)dir,grey of China's textile industry were year by year decreasing through the efforts of issuing restriction policies on freshwater use and wastewater generation and discharge, and popularization of water saving and wastewater treatment technologies.

  6. Methylene blue is associated with poor outcomes in vasoplegic shock.

    Science.gov (United States)

    Weiner, Menachem M; Lin, Hung-Mo; Danforth, Dennis; Rao, Srikar; Hosseinian, Leila; Fischer, Gregory W

    2013-12-01

    The purpose of this study was to investigate whether patients who received methylene blue as treatment for vasoplegia during cardiac surgery with cardiopulmonary bypass had decreased morbidity and mortality. Retrospective analysis. Single tertiary care university hospital. Adult patients who suffered from vasoplegia and underwent all types of cardiac surgery with cardiopulmonary bypass at this institution between 2007 and 2008. With IRB approval, the authors reviewed the charts of the identified patients and divided them into 2 groups based on whether they had received methylene blue. Two hundred twenty-six patients were identified who met the inclusion criteria for the study. Fifty-seven of these patients had received methylene blue for vasoplegia. The authors collected data on preoperative and intraoperative variables as well as outcomes. The patients who received methylene blue had higher rates of in-hospital mortality, a compilation of morbidities, as well as renal failure and hyperbilirubinemia. A multiple logistic regression model demonstrated that receiving methylene blue was an independent predictor of in-hospital mortality (p value: 0.007, OR 4.26, 95% CI: 1.49-12.12), compilation of morbidities (p value: 0.001, OR 4.80, 95% CI: 1.85-12.43), and hyperbilirubinemia (p value:methylene blue as treatment for vasoplegia to be independently associated with poor outcomes. While further studies are required, a thorough risk-benefit analysis should be applied before using methylene blue and, perhaps, it should be relegated to rescue use and not as first-line therapy. Copyright © 2013 Elsevier Inc. All rights reserved.

  7. Study of Methylene Blue Ototoxicity in the Guinea Pig.

    Science.gov (United States)

    Belhassen, Sarah; Alzahrani, Musaed; Nader, Marc-Elie; Gaboury, Louis; Saliba, Issam

    2017-11-01

    Methylene blue is widely used in the medical field, especially as a blue dye for staining. It is also used as a photosensitizing agent in antimicrobial photodynamic therapy, which once photoactivated is effective for the eradication of several multi-resistant bacteria. The objective of this study was to investigate the ototoxic potential of methylene blue and precise its use in otology. It was a prospective animal study performed on guinea pigs in our tertiary medical center. We divided the animals into two groups: an experimental group and a control group, who underwent a series of three intratympanic (IT) injections. In the control group (n = 10), they received injections of gentamicin in one ear (positive control) and normal saline in the contralateral ear (negative control). The experimental group (n = 10) received injections of methylene blue in one ear, compared to injections of normal saline in the contralateral ear. We conducted auditory-evoked brainstem response (ABR) before and 1 week after the injection series. Once this is completed, the cochlea was dissected and caspase-3 was analyzed by immunohistochemistry. The mean difference of hearing loss in the methylene blue group compared to normal saline was 1.50 dB, and it was not shown to be statistically significant (P = 0.688). For the positive control group, which received IT injections of gentamicin, the mean threshold of hearing loss difference for all the frequencies combined was 66.25 dB (P methylene blue. In light of our results, IT injections of methylene blue did not demonstrate an ototoxic potential. We recommend further studies to precise its use in the otologic field.

  8. Neurometabolic mechanisms for memory enhancement and neuroprotection of methylene blue

    Science.gov (United States)

    Rojas, Julio C.; Bruchey, Aleksandra K.; Gonzalez-Lima, F.

    2011-01-01

    This paper provides the first review of the memory-enhancing and neuroprotective metabolic mechanisms of action of methylene blue in vivo. These mechanisms have important implications as a new neurobiological approach to improve normal memory and to treat memory impairment and neurodegeneration associated with mitochondrial dysfunction. Methylene blue’s action is unique because its neurobiological effects are not determined by regular drug-receptor interactions or drug-response paradigms. Methylene blue shows a hormetic dose-response, with opposite effects at low and high doses. At low doses, methylene blue is an electron cycler in the mitochondrial electron transport chain, with unparalleled antioxidant and cell respiration-enhancing properties that affect the function of the nervous system in a versatile manner. A major role of the respiratory enzyme cytochrome oxidase on the memory-enhancing effects of methylene blue is supported by available data. The memory-enhancing effects have been associated with improvement of memory consolidation in a network-specific and use-dependent fashion. In addition, low doses of methylene blue have also been used for neuroprotection against mitochondrial dysfunction in humans and experimental models of disease. The unique auto-oxidizing property of methylene blue and its pleiotropic effects on a number of tissue oxidases explain its potent neuroprotective effects at low doses. The evidence reviewed supports a mechanistic role of low-dose methylene blue as a promising and safe intervention for improving memory and for the treatment of acute and chronic conditions characterized by increased oxidative stress, neurodegeneration and memory impairment. PMID:22067440

  9. Blue Guardian: open architecture intelligence, surveillance, and reconnaissance (ISR) demonstrations

    Science.gov (United States)

    Shirey, Russell G.; Borntrager, Luke A.; Soine, Andrew T.; Green, David M.

    2017-04-01

    The Air Force Research Laboratory (AFRL) - Sensors Directorate has developed the Blue Guardian program to demonstrate advanced sensing technology utilizing open architectures in operationally relevant environments. Blue Guardian has adopted the core concepts and principles of the Air Force Rapid Capabilities Office (AFRCO) Open Mission Systems (OMS) initiative to implement an open Intelligence, Surveillance and Reconnaissance (ISR) platform architecture. Using this new OMS standard provides a business case to reduce cost and program schedules for industry and the Department of Defense (DoD). Blue Guardian is an early adopting program of OMS and provides much needed science and technology improvements, development, testing, and implementation of OMS for ISR purposes. This paper presents results and lessons learned under the Blue Guardian Project Shepherd program which conducted Multi-INT operational demonstrations in the Joint Interagency Task Force - South (JIATF-S) and USSOUTHCOM area of operations in early 2016. Further, on-going research is discussed to enhance Blue Guardian Multi-INT ISR capabilities to support additional mission sets and platforms, including unmanned operations over line of sight (LOS) and beyond line of sight (BLOS) datalinks. An implementation of additional OMS message sets and services to support off-platform sensor command and control using OMS/UCI data structures and dissemination of sensor product data/metadata is explored. Lastly, the Blue Guardian team is working with the AgilePod program to use OMS in a full Government Data Rights Pod to rapidly swap these sensors to different aircraft. The union of the AgilePod (which uses SOSA compliant standards) and OMS technologies under Blue Guardian programs is discussed.

  10. Largely blue-shifted emission through minor structural modifications: molecular design, synthesis, aggregation-induced emission and deep-blue OLED application.

    Science.gov (United States)

    Huang, Jing; Sun, Ning; Chen, Pengyu; Tang, Runli; Li, Qianqian; Ma, Dongge; Li, Zhen

    2014-02-28

    By simply introducing additional groups with different size and conjugation degree to the 2,2'-positions of BTPE, four BTPE derivatives are prepared which give blue or deep-blue EL emissions when used as emitters in non-doped OLEDs, as the result of the tuned dihedral angles of the biphenyl cores (up to ~89°), providing a new approach to design AIE luminogens with blue and deep-blue emissions.

  11. Blue-Light Filtering Spectacle Lenses: Optical and Clinical Performances.

    Directory of Open Access Journals (Sweden)

    Tsz Wing Leung

    Full Text Available To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality.Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral transmittances measured by a spectrophotometer. Experiment 2: A pseudo-randomized controlled study was conducted to evaluate the clinical performance of two blue-light filtering spectacle lenses (BF: blue-filtering anti-reflection coating; BT: brown-tinted with a regular clear lens (AR serving as a control. A total of eighty computer users were recruited from two age cohorts (young adults: 18-30 yrs, middle-aged adults: 40-55 yrs. Contrast sensitivity under standard and glare conditions, and colour discrimination were measured using standard clinical tests. After one month of lens wear, subjective ratings of lens performance were collected by questionnaire.All tested blue-light filtering spectacle lenses theoretically reduced the calculated phototoxicity by 10.6% to 23.6%. Although use of the blue-light filters also decreased scotopic sensitivity by 2.4% to 9.6%, and melatonin suppression by 5.8% to 15.0%, over 70% of the participants could not detect these optical changes. Our clinical tests revealed no significant decrease in contrast sensitivity either with (95% confidence intervals [CI]: AR-BT [-0.05, 0.05]; AR-BF [-0.05, 0.06]; BT-BF [-0.06, 0.06] or without glare (95% CI: AR-BT [-0.01, 0.03]; AR-BF [-0.01, 0.03]; BT-BF [-0.02, 0.02] and colour discrimination (95% CI: AR-BT [-9.07, 1.02]; AR-BF [-7.06, 4.46]; BT-BF [-3.12, 8.57].Blue-light filtering spectacle lenses can partially filter high-energy short-wavelength light without substantially degrading visual performance and sleep quality. These lenses may serve as a supplementary option for protecting the retina from

  12. Blue-Light Filtering Spectacle Lenses: Optical and Clinical Performances.

    Science.gov (United States)

    Leung, Tsz Wing; Li, Roger Wing-Hong; Kee, Chea-Su

    2017-01-01

    To evaluate the optical performance of blue-light filtering spectacle lenses and investigate whether a reduction in blue light transmission affects visual performance and sleep quality. Experiment 1: The relative changes in phototoxicity, scotopic sensitivity, and melatonin suppression of five blue-light filtering plano spectacle lenses were calculated based on their spectral transmittances measured by a spectrophotometer. Experiment 2: A pseudo-randomized controlled study was conducted to evaluate the clinical performance of two blue-light filtering spectacle lenses (BF: blue-filtering anti-reflection coating; BT: brown-tinted) with a regular clear lens (AR) serving as a control. A total of eighty computer users were recruited from two age cohorts (young adults: 18-30 yrs, middle-aged adults: 40-55 yrs). Contrast sensitivity under standard and glare conditions, and colour discrimination were measured using standard clinical tests. After one month of lens wear, subjective ratings of lens performance were collected by questionnaire. All tested blue-light filtering spectacle lenses theoretically reduced the calculated phototoxicity by 10.6% to 23.6%. Although use of the blue-light filters also decreased scotopic sensitivity by 2.4% to 9.6%, and melatonin suppression by 5.8% to 15.0%, over 70% of the participants could not detect these optical changes. Our clinical tests revealed no significant decrease in contrast sensitivity either with (95% confidence intervals [CI]: AR-BT [-0.05, 0.05]; AR-BF [-0.05, 0.06]; BT-BF [-0.06, 0.06]) or without glare (95% CI: AR-BT [-0.01, 0.03]; AR-BF [-0.01, 0.03]; BT-BF [-0.02, 0.02]) and colour discrimination (95% CI: AR-BT [-9.07, 1.02]; AR-BF [-7.06, 4.46]; BT-BF [-3.12, 8.57]). Blue-light filtering spectacle lenses can partially filter high-energy short-wavelength light without substantially degrading visual performance and sleep quality. These lenses may serve as a supplementary option for protecting the retina from potential

  13. Sustainable Life on the Blue Frontier

    Science.gov (United States)

    Helvarg, D.

    2002-05-01

    the 1950s suggest we now have the technological capacity for a new energy transition to non-carbon systems including photovoltaics, wind-turbines, biofuels and hydrogen fuel-cells. A (largely) hydrogen based economy could also lead to a decentralized power grid less vulnerable to terrorism and the increased natural disasters we can expect in the coming greenhouse century. Sustainable development of limited resources and the shift to renewable forms of agriculture, water-planning, energy and other technologies will ultimately depend not simply on earth science, but on a highly political process which will (hopefully) combine the best-available science, and society's values to determine public policy that benefits the long-term interests of our blue planet's varied residents, recognizing that our economy is a fully owned subsidiary of our environment.

  14. Development of a Blue Emitting Calcium-Aluminate Phosphor.

    Directory of Open Access Journals (Sweden)

    Doory Kim

    Full Text Available We report methodological advances that enhance the phosphorescence efficiency of a blue-emitting calcium aluminate phosphor (CaAl2O4: Eu2+, Nd3+. The investigation of long-persistence blue-emitting phosphors is highly desirable due to their promising applications, such as white LEDs; however, the development of highly efficient blue-emitting phosphors is still challenging. Here, we have quantitatively characterized the phosphorescence properties of the blue-emitting phosphor CaAl2O4:Eu2+, Nd3+ with various compositions and directly related these properties to the quality of its luminescence. We optimized the composition of the activator Eu2+ and the co-activator Nd3+, the doping conditions with alkaline earth metals, alkali metals, and Si to create crystallographic distortions and, finally, the flux conditions to find the best parameters for bright and persistent blue-emitting phosphors. Our research has identified several doping compositions with good to excellent performance, with which we have demonstrated bright and persistent phosphors with afterglow characteristics superior to those of conventional phosphors.

  15. Thermal wet decomposition of Prussian Blue: implications for prebiotic chemistry.

    Science.gov (United States)

    Ruiz-Bermejo, Marta; Rogero, Celia; Menor-Salván, César; Osuna-Esteban, Susana; Martín-Gago, José Angel; Veintemillas-Verdaguer, Sabino

    2009-09-01

    The complex salt named Prussian Blue, Fe4[Fe(CN)6]3 x 15 H2O, can release cyanide at pH > 10. From the point of view of the origin of life, this fact is of interest, since the oligomers of HCN, formed in the presence of ammonium or amines, leads to a variety of biomolecules. In this work, for the first time, the thermal wet decomposition of Prussian Blue was studied. To establish the influence of temperature and reaction time on the ability of Prussian Blue to release cyanide and to subsequently generate other compounds, suspensions of Prussian Blue were heated at temperatures from room temperature to 150 degrees at pH 12 in NH3 environment for several days. The NH3 wet decomposition of Prussian Blue generated hematite, alpha-Fe2O3, the soluble complex salt (NH4)4[Fe(CN6)] x 1.5 H2O, and several organic compounds, the nature and yield of which depend on the experimental conditions. Urea, lactic acid, 5,5-dimethylhydantoin, and several amino acids and carboxylic acids were identified by their trimethylsilyl (TMS) derivatives. HCN, cyanogen (C2N2), and formamide (HCONH2) were detected in the gas phase by GC/MS analysis.

  16. Blue whale habitat and prey in the California Channel Islands

    Science.gov (United States)

    Fiedler, Paul C.; Reilly, Stephen B.; Hewitt, Roger P.; Demer, David; Philbrick, Valerie A.; Smith, Susan; Armstrong, Wesley; Croll, Donald A.; Tershy, Bernie R.; Mate, Bruce R.

    1998-08-01

    Whale Habitat and Prey Studies were conducted off southern California during August 1995 (WHAPS95) and July 1996 (WHAPS96) to (1) study the distribution and activities of blue whales and other large whales, (2) survey the distribution of prey organisms (krill), and (3) measure physical and biological habitat variables that influence the distribution of whales and prey. A total of 1307 cetacean sightings included 460 blue whale, 78 fin whale and 101 humpback whale sightings. Most blue whales were found in cold, well-mixed and productive water that had upwelled along the coast north of Point Conception and then advected south. They were aggregated in this water near San Miguel and Santa Rosa Islands, where they fed on dense, subsurface layers of euphausiids both on the shelf and extending off the shelf edge. Two species of euphausiids were consumed by blue whales, Thysanoessa spinifera and Euphausia pacifica, with evidence of preference for the former, a larger and more coastal species. These krill patches on the Channel Island feeding grounds are a resource exploited during summer-fall by the world's largest stock of blue whales.

  17. Does Blue Uniform Color Enhance Winning Probability in Judo Contests?

    Directory of Open Access Journals (Sweden)

    Peter D. Dijkstra

    2018-01-01

    Full Text Available The color of an athlete's uniform may have an effect on psychological functioning and consequently bias the chances of winning contests in sport competition. Several studies reported a winning bias for judo athletes wearing a blue outfit relative to those wearing a white outfit. However, we argue there is no winning bias and that previous studies were confounded and based on small and specific data sets. We tested whether blue biases winning in judo using a very extensive judo data set (45,874 contests from all international judo tournaments between 2008 and 2014. In judo, the first called athlete for the fight used to wear the blue judogi but this was changed to the white judogi in 2011. This switch enabled us to compare the win bias before and after this change to isolate the effect of the color of the judogi. We found a significant win bias for the first called athlete, but this effect was not significantly related to the color of the judogi. The lack of a significant win effect of judogi color suggests that blue does not bias winning in judo, and that the blue-white pairing ensures an equal level of play. Our study shows the importance of thoroughly considering alternative explanations and using extensive datasets in color research in sports and psychology.

  18. Proteomics meets blue biotechnology: a wealth of novelties and opportunities.

    Science.gov (United States)

    Hartmann, Erica M; Durighello, Emie; Pible, Olivier; Nogales, Balbina; Beltrametti, Fabrizio; Bosch, Rafael; Christie-Oleza, Joseph A; Armengaud, Jean

    2014-10-01

    Blue biotechnology, in which aquatic environments provide the inspiration for various products such as food additives, aquaculture, biosensors, green chemistry, bioenergy, and pharmaceuticals, holds enormous promise. Large-scale efforts to sequence aquatic genomes and metagenomes, as well as campaigns to isolate new organisms and culture-based screenings, are helping to push the boundaries of known organisms. Mass spectrometry-based proteomics can complement 16S gene sequencing in the effort to discover new organisms of potential relevance to blue biotechnology by facilitating the rapid screening of microbial isolates and by providing in depth profiles of the proteomes and metaproteomes of marine organisms, both model cultivable isolates and, more recently, exotic non-cultivable species and communities. Proteomics has already contributed to blue biotechnology by identifying aquatic proteins with potential applications to food fermentation, the textile industry, and biomedical drug development. In this review, we discuss historical developments in blue biotechnology, the current limitations to the known marine biosphere, and the ways in which mass spectrometry can expand that knowledge. We further speculate about directions that research in blue biotechnology will take given current and near-future technological advancements in mass spectrometry. Copyright © 2014 Elsevier B.V. All rights reserved.

  19. Effect of Trypan Blue on Descemet Membrane Elasticity.

    Science.gov (United States)

    John, Thomas; Patel, Alpesh; Vasavada, Abhay; Singh, Man; Nath, Vandana; Cheng, Anny M S; Sheha, Hosam

    2016-11-01

    To evaluate the effect of trypan blue on the elastic property of Descemet membrane (DM) by atomic force microscopy. Human corneas (n = 10) were obtained from the Illinois Eye Bank (Chicago, IL). The DM was isolated and divided into two halves, one half was stained with ophthalmic trypan blue (Vision Blue, 0.06%, DORC International), whereas the unstained other half served as control. The DM samples were then tested using the atomic force microscope. Data were analyzed using the Hertz model for the evaluation of the Young modulus of elasticity. Atomic force microscopy showed higher cantilever deflection on trypan blue-stained DM compared with control, and the difference was statistically significant (P = 0.03). Force-distance curve analysis also revealed a statistically significant increase in the Young modulus of elasticity in the trypan blue-stained samples (10.5 ± 1.4 kPa) compared with the control (5.8 ± 0.8 kPa), (P elasticity and consequently increase its stiffness. This may influence the graft adherence when used for endothelial keratoplasty.

  20. Compete or Leapfrog: Creating Blue Ocean through Entrepreneurial Orientation

    Directory of Open Access Journals (Sweden)

    Arslan Ayub

    2013-10-01

    Full Text Available The study analyzes the role of entrepreneurial orientation with mediating effect of knowledge creation process to creating Blue Ocean in corporate sector in Pakistan There is an increasing competition among companies due to globalization and technological advancements. Thus, it requires a study to measure the multifaceted influence of entrepreneurial orientation on knowledge creation process and Blue Ocean besides the actual paradigm of this terminology. This concept has been well discussed in this research arena since its inception in 2005. Numerous such initiatives have already been taken, however this concept invites a lot more addition, related companies are still in pursuit to materialize the research concepts. We highlight the contingencies in the shift from a red ocean to Blue Ocean. The study uses exploratory approach; primary data is collected from 391 professionals working in different sectors of Pakistan. The study uses structural equation model (SEM technique to test the hypotheses. The study found a positive relationship between entrepreneurial orientation and Blue Ocean, entrepreneurial orientation, knowledge creation process, and Blue Ocean. The study throws light on the importance of entrepreneurial orientation and knowledge creation process to head on this fast-paced competition.

  1. Blues in Two Different Spanish-Speaking Populations

    Directory of Open Access Journals (Sweden)

    Fernando González-Perilli

    2017-12-01

    Full Text Available Several studies investigating color discrimination across languages have shown a facilitation effect in groups that employ more than one term to refer to a given color. While Uruguayans use “azul” to refer to dark blue and “celeste” for light blue, Spaniards use “azul” for dark blue and the compound terms “azul celeste” or “azul claro” for light blue. In this study, Uruguayan and Spanish participants discriminated between pairs of color stimuli that lie at different distances from each other on the blue color spectrum in three different sessions: a session with no interference (basic task, one with verbal and one with visual interference. Only the Uruguayans were more accurate at distinguishing between stimuli associated with different color terms. Furthermore, while both Uruguayans and Spaniards showed a category effect in response times, the effect was strongest for Uruguayans when items were closer to each other on the color spectrum (i.e., more difficult. This study is unique in that we observed different Whorfian effects in two groups that speak the same language but differ in their use of color-specific terms. Our results contribute to the discussion of whether and to what extent language or other cultural variables affect the perception of different color categories.

  2. Histopathological analysis in experimental macular surgery with trypan blue.

    Science.gov (United States)

    Grisanti, S; Szurman, P; Tatar, O; Gelisken, F; Aisenbrey, S; Oficjalska-Mlynczak, J; Kaczmarek, R; Bartz-Schmidt, K U

    2004-09-01

    To analyse the effect of trypan blue on the retina in an experimental setting of macular surgery. Porcine eyes were used within 3 hours after death. The eyes were hemisected and the vitreous removed. Trypan blue (0.15%) was applied over the trephined posterior pole, whereas the rest of the eye cup was filled with a balanced salt solution (BSS). The dye and the BSS were removed after 1 minute and the complete eye cup irrigated and filled with fresh BSS. Both the treated and untreated retinas were illuminated with a standard surgical light pipe and source at maximum power for 10 minutes. Both the trypan blue exposed retina and the non-treated surrounding retina were processed for histology. Exposure of the retina to trypan blue for 1 minute, followed by illumination caused no histologically detectable damage compared to the controls. No microarchitectural disorganisation, cellular disruption, or affection of the vitreoretinal interface was detected. These findings indicate that a 1 minute exposure of trypan blue followed by illumination does not cause an acute morphologically detectable toxic effect on the porcine retina.

  3. Improving code blue response through the use of simulation.

    Science.gov (United States)

    Huseman, Kelley F

    2012-01-01

    In this research project, the response times to chest compressions, first defibrillation, and first dose of epinephrine in cardiac arrest were measured over a 3-month period through retrospective chart reviews. All nursing staff then participated in random, unannounced mock code blue drills using a high-fidelity patient simulator. After 3 months of code blue drills, the variables were again measured in patient code blue situations and compared with the response times before training. At the conclusion of this study, the response times for start of chest compressions and epinephrine administration improved significantly; the response time to defibrillation did not improve significantly. The response times were measured for an additional 3-month period to assess if the improvement was sustained.

  4. Acrylated Composite Hydrogel Preparation and Adsorption Kinetics of Methylene Blue

    Directory of Open Access Journals (Sweden)

    Jinpeng Wang

    2017-10-01

    Full Text Available By using cyclodextrin (α-CD self-assembly into a hydrogel with the triblock copolymer Pluronic F127, nanomicrocrystalline cellulose was introduced into a gel system to form a composite CNC-β-CD/α-CD/Pluronic F127 hydrogel (CCH. CCH was modified further by grafting acrylic acid to form a novel acrylated composite hydrogel (ACH. The swelling degree of ACH was 156 g/g. Adsorption isotherms show that the adsorption process for methylene blue proximity fitted the Freundlich model. The adsorption kinetics showed that ACH followed a quasi-second-order kinetic model. Methylene blue desorption showed that ACH was a temperature- and pH-dependent gel. Repeated adsorption and desorption experiments were carried out three times, and the removal rate of methylene blue at 75 mg/L was still 70.1%.

  5. Alcian blue-stained particles in a eutrophic lake

    DEFF Research Database (Denmark)

    Worm, J.; Søndergaard, Morten

    1998-01-01

    We used a neutral solution of Alcian Blue to stain transparent particles in eutrophic Lake Frederiksborg Slotss0, Denmark. Alcian Blue-stained particles (ABSP) appeared to be similar to the so-called transparent exopolymer particles (TEP) identified with an acidic solution of Alcian Blue. Our...... results on the abundance, size distribution and bacterial colonization of ABSP therefore reflect general patterns of TEP. The abundance of ABSP in the size range 3-162 urn and retained by 3 um pore size filters averaged 3.6 ± 2.49 x 10s ml"1 (± SD), which is among the highest concentrations reported...... for comparable size spectra of TEP. On average, 35 % of ABSP (by number) were colonized by bacteria and 8.6 x 105 bacteria ml"1 lake water were attached to ABSP, which corresponds to 7% of the total bacterial abundance....

  6. Blue-noise remeshing with farthest point optimization

    KAUST Repository

    Yan, Dongming

    2014-08-01

    In this paper, we present a novel method for surface sampling and remeshing with good blue-noise properties. Our approach is based on the farthest point optimization (FPO), a relaxation technique that generates high quality blue-noise point sets in 2D. We propose two important generalizations of the original FPO framework: adaptive sampling and sampling on surfaces. A simple and efficient algorithm for accelerating the FPO framework is also proposed. Experimental results show that the generalized FPO generates point sets with excellent blue-noise properties for adaptive and surface sampling. Furthermore, we demonstrate that our remeshing quality is superior to the current state-of-the art approaches. © 2014 The Eurographics Association and John Wiley & Sons Ltd.

  7. Microanalysis study of archaeological mural samples containing Maya blue pigment

    Energy Technology Data Exchange (ETDEWEB)

    Sanchez del Rio, M. [ESRF, BP220, F-38043 Grenoble (France)]. E-mail: srio@esrf.fr; Martinetto, P. [Laboratoire de Cristallographie, CNRS, BP166 F-30842 Grenoble (France); Somogyi, A. [ESRF, BP220, F-38043 Grenoble (France); Reyes-Valerio, C. [INAH, Mexico DF (Mexico); Dooryhee, E. [Laboratoire de Cristallographie, CNRS, BP166 F-30842 Grenoble (France); Peltier, N. [Laboratoire de Cristallographie, CNRS, BP166 F-30842 Grenoble (France); Alianelli, L. [INFM-OGG c/o ESRF, BP220, F-38043 Grenoble Cedex (France); Moignard, B. [C2RMF, 6 Rue des Pyramides, F-75041 Paris Cedex 01 (France); Pichon, L. [C2RMF, 6 Rue des Pyramides, F-75041 Paris Cedex 01 (France); Calligaro, T. [C2RMF, 6 Rue des Pyramides, F-75041 Paris Cedex 01 (France); Dran, J.-C. [C2RMF, 6 Rue des Pyramides, F-75041 Paris Cedex 01 (France)

    2004-10-08

    Elemental analysis by X-ray fluorescence and particle induced X-ray emission is applied to the study of several Mesoamerican mural samples containing blue pigments. The most characteristic blue pigment is Maya blue, a very stable organo-clay complex original from Maya culture and widely used in murals, pottery and sculptures in a vast region of Mesoamerica during the pre-hispanic time (from VIII century) and during the colonization until 1580. The mural samples come from six different archaeological sites (four pre-hispanic and two from XVI century colonial convents). The correlation between the presence of some elements and the pigment colour is discussed. From the comparative study of the elemental concentration, some conclusions are drawn on the nature of the pigments and the technology used.

  8. Physics of the Blues: Music, Fourier and Wave - Particle Duality

    Energy Technology Data Exchange (ETDEWEB)

    Gibson, J. Murray (ANL)

    2003-10-15

    Art and science are intimately connected. There is probably no art that reveals this more than music. Music can be used as a tool to teach physics and engineering to non-scientists, illustrating such diverse concepts as Fourier analysis and quantum mechanics. This colloquium is aimed in reverse, to explain some interesting aspects of music to physicists. Topics include: What determines the frequency of notes on a musical scale? What is harmony and why would Fourier care? Where did the blues come from? (We' re talking the 'physics of the blues', and not 'the blues of physics' - that's another colloquium). Is there a musical particle? The presentation will be accompanied by live keyboard demonstrations. The presenter will attempt to draw tenuous connections between the subject of his talk and his day job as Director of the Advanced Photon Source at Argonne National Laboratory.

  9. Velocidad radial de Blue Stragglers en cúmulos abiertos

    Science.gov (United States)

    González, J. F.; Lapasset, E.

    Se presentan observaciones espectroscópicas de 32 blue stragglers en 6 cúmulos abiertos. Un mínimo de 4 espectros por objeto fueron obtenidos en base a los cuales se determina tipo espectral, velocidad radial y velocidad de rotación proyectada. La comparación con la velocidad media de los cúmulos aseguraría una alta probabilidad de pertenencia para la mayoría de los objetos estudiados. Un análisis de variabilidad conduce a la detección de un nuevo blue straggler binario en el cúmulo NGC 6530 además de otras probables binarias. En base a la frecuencia de binaridad y a la distribución de velocidades rotacionales se discuten los probables mecanismos de formación de los blue stragglers.

  10. Blue LED light as a new hygienic problem

    Directory of Open Access Journals (Sweden)

    V.A. Kaptsov

    2016-03-01

    Full Text Available The conditions for the formation of an excess dose of blue light produced by the LED lighting were examined. It is shown that light-biological safety assessment carried out in accordance with GOST R IEC 62471-2013 need to be clarified, taking into account changes in the pupil of eye’s diameters when LED lighting and spatial distribution of the light-absorbing blue light (460 nm of the pigment in the macula influences it. Methodical principles of calculation of an excess dose of blue light in the spectrum of LED lighting comparing to sunlight are presented. It is indicated that today in the USA and Japan the concept of LED lighting has changed and LED white light been developed to minimize disturbances of health risks. This concept applies not only to general lighting in the United States, but also to monitors and car headlights.

  11. Code Blue Emergencies: A Team Task Analysis and Educational Initiative

    Directory of Open Access Journals (Sweden)

    James W. Price

    2012-04-01

    Full Text Available Introduction: The objective of this study was to identify factors that have a positive or negative influence on resuscitation team performance during emergencies in the operating room (OR and post-operative recovery unit (PAR at a major Canadian teaching hospital. This information was then used to implement a team training program for code blue emergencies. Methods: In 2009/10, all OR and PAR nurses and 19 anesthesiologists at Vancouver General Hospital (VGH were invited to complete an anonymous, 10 minute written questionnaire regarding their code blue experience. Survey questions were devised by 10 recovery room and operation room nurses as well as 5 anesthesiologists representing 4 different hospitals in British Columbia. Three iterations of the survey were reviewed by a pilot group of nurses and anesthesiologists and their feedback was integrated into the final version of the survey. Results: Both nursing staff (n = 49 and anesthesiologists (n = 19 supported code blue training and believed that team training would improve patient outcome. Nurses noted that it was often difficult to identify the leader of the resuscitation team. Both nursing staff and anesthesiologists strongly agreed that too many people attending the code blue with no assigned role hindered team performance. Conclusion: Identifiable leadership and clear communication of roles were identified as keys to resuscitation team functioning. Decreasing the number of people attending code blue emergencies with no specific role, increased access to mock code blue training, and debriefing after crises were all identified as areas requiring improvement. Initial team training exercises have been well received by staff.

  12. pH influences the biocompatibility of methylene blue solutions.

    Science.gov (United States)

    Gusman, David Jonathan Rodrigues; Cintra, Luciano Tavares Angelo; Novaes, Vivian Cristina Noronha; Matheus, Henrique Rinaldi; de Araujo, Nathália Januario; de Almeida, Juliano Milanezi

    2018-01-01

    The aim of this study was to investigate the biocompatibility of methylene blue at different pH levels through the method of implantation in subcutaneous tissue. Eighty-four sterilized polyethylene tubes were allocated in the subcutaneous tissue of 28 rats, each one receiving four tubes, set into four groups: group tube (G-T)-empty tube, fibrin group (G-F)-tube filled with fibrin sponge, group methylene blue pH 7 (G-MB/pH 7)-tube filled with fibrin sponge soaked by methylene blue (100 μg/ml) at pH 7.0, and group methylene blue pH 1 (G-MB/pH 1)-tube filled with fibrin sponge and soaked by methylene blue (100 μg/ml) at pH 1.0. After 7, 15, and 30 days, seven animals from each group were euthanized, and the tubes involved by the surrounding tissue were removed and fixed with 4% buffered formaldehyde solution. The collected pieces were processed and histological sections (4 μm) were stained with hematoxylin and eosin and analyzed by light microscopy. Scores were assigned to analysis of histopathologic parameters. The results were statistically analyzed by the Kruskal-Wallis test (p ≤ 0.05). At 7 and 30 days, the G-MB/pH 1 group showed no significant difference in the G-T control group, while G-MB/pH 7 had a significant increase on tissue reaction, also when compared to G-T. At 15 days, there was no statistical difference between the groups. Within the limits of this study, it is concluded that methylene blue at pH 1.0 provides better biocompatibility than at pH 7.0.

  13. Water security assessment using blue and green water footprint concepts

    Science.gov (United States)

    Veettil, Anoop Valiya; Mishra, Ashok K.

    2016-11-01

    The quantitative assessment of water security using the concept of blue and green water footprints can improve water resources management at local to regional scale. We developed an integrated modeling framework by considering both climatic and anthropogenic factors to investigate spatio-temporal variability of blue and green water availability and to quantify the water security in a river basin. The proposed modeling framework can be useful for providing an overview of the water security within the watershed and to identify water stress (hot spots) regions within the river basin. We applied Soil and Water Assessment Tool (SWAT) to quantify the availability of fresh water (blue water and green water) in Savannah River Basin (SRB), USA. The anthropogenic factors (e.g., water demand) and Environmental Flow Requirement (EFR) information are incorporated to quantify the water security in terms of scarcity and vulnerability indices. A higher amount of blue water was observed for counties located in the upper part of SRB and higher green water flow was observed for counties that has the presence of intensive agriculture and large water bodies (e.g., reservoir). A time lag exists between the maximum rainfall during June-September and the maximum blue water observed in December-March. The study also analyzed the monthly variation of blue and green water flow for counties located in SRB. We expect that the water security assessment can provide useful information for understanding the emerging hot spots within a river basin (eco-system) due to the abstraction of water for human activities, such as irrigation, industrial use, energy production and domestic use.

  14. Allergic contact dermatitis to acrylates in disposable blue diathermy pads.

    Science.gov (United States)

    Sidhu, S K; Shaw, S

    1999-05-01

    We report 2 cases of elicitation of allergic contact dermatitis to acrylates from disposable blue diathermy pads used on patients who underwent routine surgery. Their reactions were severe, and took approximately 5 weeks to resolve. Both patients gave a prior history of finger tip dermatitis following the use of artificial sculptured acrylic nails, which is a common, but poorly reported, cause of acrylate allergy. Patch testing subsequently confirmed allergies to multiple acrylates present in both the conducting gel of disposable blue diathermy pads, and artificial sculptured acrylic nails. We advocate careful history taking prior to surgery to avoid unnecessary exposure to acrylates in patients already sensitized.

  15. The role of a blue ocean strategy on performance evaluation

    Directory of Open Access Journals (Sweden)

    Mojtaba Tabari

    2014-08-01

    Full Text Available This paper develops a balanced scorecard (BSC in order to prepare a comprehensive tool for performance evaluation. In this way, an experimental test is conducted in the Resorts of Ramsar Green City located in the north of Iran, in which the factors of a blue ocean strategy influence on the dimensions of the BSC. The sample number of this study consists of 90 managers and experts of the employees who work for Resorts of Ramsar Green City. The acquired data are analyzed with using the t-test. The obtained results show that the blue ocean strategy changes in the objects and the scales of the BSC.

  16. Blue stellar objects of the first byurakan survey

    Science.gov (United States)

    Mickaelian, A. M.

    The second part of the First Byurakan Survey is devoted to the search and investigation of blue stellar objects, hot subdwarfs, white dwarfs, HBB stars, cataclysmic variables, quasars, compact Seyfert galaxies. 1103 object were selected on a surface of 4009 square degrees at high Galactic latitudes, 716 of which are new. Many of these objects are being investigated with spectral and polarimetric methods, and photometric estimates of objects are being made. An analysis of the sample of blue stellar objects is made and subsamples of different types of objects within this sample are separated for further study.

  17. Optimum Dietary Protein Level for Blue Streak Hap, Labidochromis caeruleus

    OpenAIRE

    Ergün, Sebahattin; Güroy, Derya; Tekeşoğlu, Haluk; Güroy, Betül; Çelik, İhsan; Tekinay, A. Adem; Bulut, Musa

    2010-01-01

    An experiment was designed to determine the optimum dietary protein level of a freshwater ornamental fish, Blue streak hap (Labidochromis caeruleus). Four isocaloric fish meal based diets ranging from 30% to 45% in protein were fed to triplicate groups of Blue streak hap for 8 weeks. Fish (initial weight, 0.85 g) were reared in twelve 50 L aquarium with biological filter and controlled temperature (27.5°C), in stocking density of ten fish/aquarium. Results showed that dietary protein level si...

  18. Pediatric Bilateral Blue Laser Pointer-Induced Maculopathy.

    Science.gov (United States)

    Raevis, Joseph; Shrier, Eric

    2017-01-01

    We report the first case of pediatric bilateral blue laser pointer maculopathy with complete resolution of visual symptoms. A 12-year-old boy presented with bilateral decreased visual acuity and central scotomata after blue laser pointer exposure. He was treated with a Medrol Dosepak and topical nonsteroidal anti-inflammatory drug (NSAID), with gradual visual acuity improved from 20/40 OU to 20/20 OU over 22 weeks, but with persistent evidence of outer retinal layer disruption from the external limiting membrane to the interdigitation zone. Oral steroids and topical NSAIDs may be effective in improving visual outcomes in laser pointer maculopathy in the pediatric population.

  19. Analysis of separated flow using image enhanced thymol blue visualization

    Science.gov (United States)

    Henderson, J. M.; Disimile, Peter J.

    Image processing techniques have been developed which enhance the quality of thymol blue visualization. These new techniques allow meaningful quantitative data to be obtained from images using thymol blue flow visualization at velocities up to twice as high as the previous limit. As a demonstration of these techniques, measurements have been taken of the physical dimensions of the separation regions developing immediately downstream of a symmetric bifurcation. These measurements are then used to elicit trends in the separation physical dimensions as a function of flow rate. This particular information is applicable to a variety of flow separation problems found in biological flows and turbomachinery.

  20. The "Deep Blue" Aerosol Project at NASA GSFC

    Science.gov (United States)

    Sayer, Andrew; Hsu, N. C.; Lee, J.; Bettenhausen, C.; Carletta, N.; Chen, S.; Esmaili, R.

    2016-01-01

    Atmospheric aerosols such as mineral dust, wildfire smoke, sea spray, and volcanic ash are of interest for a variety of reasons including public health, climate change, hazard avoidance, and more. Deep Blue is a project which uses satellite observations of the Earth from sensors such as SeaWiFS, MODIS, and VIIRS to monitor the global aerosol burden. This talk will cover some basics about aerosols and the principles of aerosol remote sensing, as well as discussing specific results and future directions for the Deep Blue project.

  1. Osteoma in a blue-fronted Amazon parrot (Amazona aestiva).

    Science.gov (United States)

    Cardoso, João Felipe Rito; Levy, Marcelo Guilherme Bezerra; Liparisi, Flavia; Romão, Mario Antonio Pinto

    2013-09-01

    Osteoma is an uncommon bone formation documented in avian species and other animals. A blue-fronted Amazon parrot (Amazona aestiva) with clinical respiratory symptoms was examined because of a hard mass present on the left nostril. Radiographs suggested a bone tumor, and the mass was surgically excised. Histopathologic examination revealed features of an osteoma. To our knowledge, this is the first description of an osteoma in a blue-fronted Amazon parrot. Osteoma should be considered as a differential diagnosis in birds with respiratory distress and swelling of the nostril.

  2. How the ``Blues'' reveals the intimacy of music and physics

    Science.gov (United States)

    Gibson, J. Murray

    2013-03-01

    Little do most people know when they hear blues piano - and you'll hear some live in this talk - that physics permeates the style, as it does all of music. Why should you care? By deconstructing blues piano the intimacy of physics, mathematics and music will be revealed in its glory.[1] The exercise says something about how the brains of the music composer and of the listener must be intimately linked to the physical principles of acoustics. And it provides a great vehicle to explain physical phenomena to non-scientists - everything from quantum mechanics to protein structure.

  3. 'No blue' LED solution for photolithography room illumination

    DEFF Research Database (Denmark)

    Ou, Haiyan; Corell, Dennis Dan; Dam-Hansen, Carsten

    2010-01-01

    This paper explored the feasibility of using a LED-based bulb as the illumination light source for photolithography room. A no-blue LED was designed, and the prototype was fabricated. The spectral power distribution of both the LED bulb and the yellow fluorescent tube was measured. Based on that......, colorimetric values were calculated and compared on terms of chromatic coordinates, correlated color temperature, color rendering index, and chromatic deviation. Gretagmacbeth color charts were used as a more visional way to compare the two light sources, which shows that our no-blue LED bulb has much better...

  4. Occupational contact dermatitis in blue-collar workers

    DEFF Research Database (Denmark)

    Schwensen, Jakob F; Menné, Torkil; Veien, Niels K

    2014-01-01

    observed among blue-collar workers (19.6%) than among controls (23.9%) (p = 0.005). Allergens with a statistically significant association with the occupational group of blue-collar workers were epoxy resins, methyldibromo glutaronitrile, 2-bromo-2-nitro-1,3-propanediol, potassium dichromate......, and methylchloroisothiazolinone (MCI)/methylisothiazolinone (MI). The following occupations were additionally identified as risk factors for contact sensitization to MCI/MI and MI, epoxy resins, and potassium dichromate, respectively: painting, construction work, and tile setting/terrazzo work. CONCLUSION: Contact allergy...

  5. Blue Mountain, Humboldt County, Nevada, U.S.A

    Energy Technology Data Exchange (ETDEWEB)

    Ted Fitzpatrick, Brian D. Fairbank

    2005-04-01

    The report documents the drilling of well Deep Blue No.2, the second deep geothermal test hole at the Blue Mountain Geothermal Area, Humboldt County, Nevada. The well was drilled by Noramex Corp, a Nevada company, with funding support from the US Department of Energy, under the DOE’s GRED II Program. Deep Blue No.2 was drilled as a ‘step-out’ hole from Deep Blue No.1, to further evaluate the commercial potential of the geothermal resource. Deep Blue No.2 was designed as a vertical, slim observation test hole to a nominal target depth of 1000 meters (nominal 3400 feet). The well tests an area of projected high temperatures at depth, from temperature gradients measured in a group of shallow drill holes located approximately one kilometer to the northeast of observation hole Deep Blue No.1. The well is not intended for, or designed as, a commercial well or a production well. Deep Blue No.2 was spudded on March 25, 2004 and completed to a total depth of 1127.76m (3700 ft) on April 28, 2004. The well was drilled using conventional rotary drilling techniques to a depth of 201.17 m (660 ft), and continuously cored from 201.17m (660 ft) to 1127.76m (3700 ft). A brief rig-on flow-test was conducted at completion to determine basic reservoir parameters and obtain fluid samples. A permeable fracture zone with measured temperatures of 150 to 167°C (302 to 333°F) occurs between 500 to 750m (1640 to 2461ft). The well was left un-lined in anticipation of the Phase III - Flow and Injection Testing. A further Kuster temperature survey was attempted after the well had been shut in for almost 3 weeks. The well appears to have bridged off at 439m (1440ft) as the Kuster tool was unable to descend past this point. Several attempts to dislodge the obstruction using tube jars were unsuccessful. Deep Blue No.2 encountered variably fractured and veined, fine-grained rocks of the Singas Formation, and intruded by minor strongly altered fine-grained felsic dikes, and less altered

  6. Geology along the Blue Ridge Parkway in Virginia

    Science.gov (United States)

    Carter, Mark W.; Southworth, C. Scott; Tollo, Richard P.; Merschat, Arthur J.; Wagner, Sara; Lazor, Ava; Aleinikoff, John N.

    2017-01-01

    Detailed geologic mapping and new SHRIMP (sensitive high-resolution ion microprobe) U-Pb zircon, Ar/Ar, Lu-Hf, 14C, luminescence (optically stimulated), thermochronology (fission-track), and palynology reveal the complex Mesoproterozoic to Quaternary geology along the ~350 km length of the Blue Ridge Parkway in Virginia. Traversing the boundary of the central and southern Appalachians, rocks along the parkway showcase the transition from the para-autochthonous Blue Ridge anticlinorium of northern and central Virginia to the allochthonous eastern Blue Ridge in southern Virginia. From mile post (MP) 0 near Waynesboro, Virginia, to ~MP 124 at Roanoke, the parkway crosses the unconformable to faulted boundary between Mesoproterozoic basement in the core of the Blue Ridge anticlinorium and Neoproterozoic to Cambrian metasedimentary and metavolcanic cover rocks on the western limb of the structure. Mesoproterozoic basement rocks comprise two groups based on SHRIMP U-Pb zircon geochronology: Group I rocks (1.2-1.14 Ga) are strongly foliated orthogneisses, and Group II rocks (1.08-1.00 Ga) are granitoids that mostly lack obvious Mesoproterozoic deformational features.Neoproterozoic to Cambrian cover rocks on the west limb of the anticlinorium include the Swift Run and Catoctin Formations, and constituent formations of the Chilhowee Group. These rocks unconformably overlie basement, or abut basement along steep reverse faults. Rocks of the Chilhowee Group are juxtaposed against Cambrian rocks of the Valley and Ridge province along southeast- and northwest-dipping, high-angle reverse faults. South of the James River (MP 64), Chilhowee Group and basement rocks occupy the hanging wall of the nearly flat-lying Blue Ridge thrust fault and associated splays.South of the Red Valley high-strain zone (MP 144.5), the parkway crosses into the wholly allochthonous eastern Blue Ridge, comprising metasedimentary and meta-igneous rocks assigned to the Wills Ridge, Ashe, and Alligator

  7. Beyond blue pico laser: development of high power blue and low power direct green

    Science.gov (United States)

    Vierheilig, Clemens; Eichler, Christoph; Tautz, Sönke; Lell, Alfred; Müller, Jens; Kopp, Fabian; Stojetz, Bernhard; Hager, Thomas; Brüderl, Georg; Avramescu, Adrian; Lermer, Teresa; Ristic, Jelena; Strauss, Uwe

    2012-03-01

    There is a big need on R&D concerning visible lasers for projection applications. The pico-size mobile projection on the one hand awaits the direct green lasers with sufficiently long lifetimes at optical powers above 50mW. In this paper we demonstrate R&D-samples emitting at 519nm with lifetimes up to 10.000 hours. The business projection on the other hand requires high power operation and already uses blue lasers and phosphor conversion, but there is a strong demand for higher power levels. We investigate the power limits of R&D laser structures. In continuous wave operation, the power is limited by thermal roll-over. With an excellent power conversion efficiency of up to 29% the thermal roll-over is as high as 2.5W for a single emitter in TO56 can. We do not observe significant leakage at high currents. Driven in short pulse operation to prevent the laser from self heating, linear laser characteristics of optical power versus electrical current are observed up to almost 8W of optical power.

  8. Blue Nevus with a Dermoscopic Appearance of Peripheral Streaks with Branches

    Directory of Open Access Journals (Sweden)

    Sachiko Sakamoto

    2014-02-01

    Full Text Available Blue nevi are dermal dendritic melanocytic proliferations presenting as papules, nodules or plaques of blue, blue-gray or blue-brown color. Dermoscopic appearance commonly shows global patterns as homogeneous mono/dichromatic pigmentation and multichromatic pigmentation. Here, we report the case of a blue nevus with the dermoscopic feature of peripheral streaks with branches. With histopathologic deep sections, we confirmed that dermal dendritic melanocytes were distributed in the direction of the streaks. We emphasize that streaks are a rare but important sign of blue nevi.

  9. Blue and white light electroluminescence in a multilayer OLED using ...

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Chemical Sciences; Volume 122; Issue 6. Blue and white light electroluminescence in a multilayer OLED using a new aluminium complex. Pabitra K Nayak Neeraj Agarwal Farman Ali Meghan P Patankar K L Narasimhan N Periasamy. Full Papers Volume 122 Issue 6 November 2010 pp 847-855 ...

  10. Silver and gold nanocluster catalyzed reduction of methylene blue ...

    Indian Academy of Sciences (India)

    Abstract. Arsenic can be determined in parts-per-million (ppm) level by absorbance measurement. This method is based on the quantitative colour bleaching of the dye, methylene blue by arsine catalyzed by nanoparticles in micellar medium. The arsine has been generated in situ from sodium arsenate by NaBH4 reduction.

  11. Blue light inhibits the growth of B16 melanoma cells

    Energy Technology Data Exchange (ETDEWEB)

    Ohara, Masayuki; Katoh, Osamu; Watanabe, Hiromitsu [Hiroshima Univ. (Japan). Research Inst. for Radiation Biology and Medicine; Kawashima, Yuzo [Otsuka Pharmaceutical Factory, Inc., Naruto, Tokushima (Japan)

    2002-05-01

    Although a number of studies have been carried out to examine the biological effects of radiation and ultraviolet radiation (UV), little is known concerning the effects of visible light. In the present study, exposure of B16 melanoma cells to blue light (wavelength 470 nm, irradiance 5.7 mW/cm{sup 2}) from a light-emitting diode (LED) inhibited cell growth in proportion to the period of exposure, with no increase observed in the number of dead cells. The number of B16 melanoma colonies that formed after exposure to blue light for 20 min was only slightly less than that in non-exposed controls, but the colony size as assessed by the area covered by colonies and cell counts per colony were markedly decreased. The percentages of G0/G1 and G2/M phase cells were markedly increased, with a reduction in S phase cells as determined by flow cytometry after exposure to blue light. Furthermore, analysis of the incorporation of 5-bromo-2'-deoxyuridine (BrdU) into DNA also showed a reduction in the percentage of S phase cells after exposure. These results indicate that blue light exerts cytostatic effects, but not a cytocidal action, on B16 melanoma cells. (author)

  12. Synthesis of New Benzocoumaryl Oxadiazolyls as Strong Blue ...

    African Journals Online (AJOL)

    NICO

    coumaryl oxadiazolyls as very strong blue and green fluorescent brighteners. 2. Experimental. All the chemicals used were that of analytical grade. Melting points were determined in open capillary and were ... temperature and poured in to 100 g of crushed ice with stirring. The precipitate obtained was filtered, washed with ...

  13. Better to be red than blue in virtual competition

    DEFF Research Database (Denmark)

    Ilie, Andrei; Ioan, Silvia; Zagrean, Leon

    2008-01-01

    that joining the red team may offer a slight advantage over the blue team in virtual competition, and this should be accounted for when designing FPS games. It is likely that "seeing red" may trigger a powerful psychological distractor signal in human aggressive competition that can affect the outcome...

  14. BLUES from Music: BLind Underdetermined Extraction of Sources from Music

    DEFF Research Database (Denmark)

    Pedersen, Michael Syskind; Lehn-Schiøler, Tue; Larsen, Jan

    2006-01-01

    In this paper we propose to use an instantaneous ICA method (BLUES) to separate the instruments in a real music stereo recording. We combine two strong separation techniques to segregate instruments from a mixture: ICA and binary time-frequency masking. By combining the methods, we are able to make...

  15. The Code Blue Report: Call to Action, or Unwarranted "Dirism"?

    Science.gov (United States)

    Males, Mike

    1992-01-01

    Examines Code Blue report of panel formed by national medical and educational associations. Contends that report paints dire picture of state of adolescent health. Asserts that analysis of report findings reveals serious flaws in presentation of youth problems and that recommendations are less original and workable than portrayed. Suggests…

  16. Designing green and blue infrastructure to support healthy urban living

    NARCIS (Netherlands)

    Gehrels, H.; Meulen, S. vsn der; Schasfoort, F.; Bosch, P.R.; Brolsma, R.; Dinter, D. van; Geerling, G.J.; Goossen, M.; Jacobs, C.; Jong, M. de; Kok, S.; Massop, H.; Oste, L.; Perez-Soba, M.; Rovers, V.; Smit, A.; Verweij, P.; Vries, B. de; Weijers, E.

    2016-01-01

    There is a growing awareness in cities throughout the world that green and blue infrastructure can offer a wide range of ecosystem services to support a healthy urban environment. For example, landscape architects explore possibilities in their design of the urban landscape to use the potential of

  17. Blue rubber bleb nevus syndrome coexisted with intestinal ...

    African Journals Online (AJOL)

    Blue Rubber Bleb Nevus Syndrome (BRBNS) is an uncommon congenital disorder characterized by sporadic venous malformation which mainly occurs in skin and alimentary canal. Here, we report a BRBNS patient with concomitant intestinal intussusception who diagnosed by intraoperative endoscopy and ultimately ...

  18. Metapopulations and the Sinai Baton Blue (Pseudophilotes sinaicus ...

    African Journals Online (AJOL)

    Dr Francis

    The distribution of the Sinai Baton Blue is highly localised, mainly due to its dependence on its sole hostplant, Sinai Thyme (Thymus decussatus Benth.), which only grows in well-developed soils such as those found at the base of cliffs or in wadis (Nakamura. 1975). Hence the thyme (and therefore the butterfly) has a patchy ...

  19. The Blue Pony Lacrosse Program: Embracing the Spirit of Diversity.

    Science.gov (United States)

    Sorensen, Barbara

    1999-01-01

    An offshoot of a Denver, Colorado, alcohol and drug abuse prevention program, Blue Pony reclaims lacrosse as a Native American sport, and uses it to bridge tribal differences and promote cultural awareness, self-empowerment, and healthy lifestyles among urban Native American children. Discusses the game's history, a literacy program utilizing…

  20. Blue light-activated hypocrellin B damages ovarian cancer cells

    Science.gov (United States)

    Jiang, Y.; Leung, A. W. N.; Xiang, J. Y.; Xu, C. S.

    2011-10-01

    In the present study, a novel blue light source from LED was used to activate hypocrellin B in ovarian cancer HO-8910 cells. Hyppcrellin B concentration was kept at 2.5 μM and light doses from 0.5-4.0 J/cm2. Photocytotoxicity was investigated using MTT reduction assay and light microscopy after light irradiation. Cellular morphology was observed using transmission electron microscopy (TEM). MTT assay showed that the cytotoxicity of blue light-activated hypocrellin B in HO-8910 cells increased along with light dose. The observations from light microscopy reinforced the above results. TEM showed that microvillin disappearance, vacuole formation, chromatin condensation, and topical apoptotic body were observed in the cells treated by both light and hypocrellin B. The findings demonstrated that blue light from LED source could effectively activate hypocrellin B to cause the destruction of HO-8910 cells, indicating that Blue light-activated hypocrellin B might be potential therapeutic strategy in the management of ovarian cancer.

  1. Compact collimators for high brightness blue LEDs using dielectric multilayers

    NARCIS (Netherlands)

    Cornelissen, H.J.; Ma, H.; Ho, C.; Li, M.; Mu, C.

    2011-01-01

    A novel method is presented to inject the light of millimeter-sized high-brightness blue LEDs into light guides of submillimeter thickness. Use is made of an interference filter that is designed to pass only those modes that will propagate in the light guide by total internal reflection. Other modes

  2. Greater food availability reduces tarsus assymmetry in nestling Blue Tits

    NARCIS (Netherlands)

    Grieco, F.

    2003-01-01

    Previous work has shown that the quantity or quality of food affects the degree of asymmetry in bilateral body traits in adult birds, but so far there is no evidence that this is the case in early phases of growth too. I studied asymmetry of tarsus length of nestling Blue Tits (Parus caeruleus) in

  3. MANAJEMEN PENDIDIKAN TINGGI ISLAM DALAM SPEKTRUM BLUE OCEAN STRATEGY

    Directory of Open Access Journals (Sweden)

    Mardia Mardia

    2011-06-01

    Full Text Available Abstract: The Islamic higher educations are undergoing important changes involving the development of missions and reorganization of management, with implications for their quality education in the midst of complexity. The main study of this article highlights the importance of governance quality in Islamic higher education in the face of complexity from the perspective of Blue Ocean Strategy. It can be concluded that to win in the future, Islamic higher educations must stop competing each other. The only way to beat the competition is to stop trying to beat the competition. Blue Ocean Strategy to be one of the alternatives in the management of educational institutions to create distinctive adavantage and competitiveness based graduates. Abstrak:  Pendidikan tinggi Islam mengalami perubahan signifikan pada pengembangan misi dan reorganisasi manajemen yang mempengaruhi kualitas pendidikan di era kompleksitas. Kompleksitas tersebut tidak dapat diprediksi dan mempengaruhi munculnya gejala disorientasi nilai, disharmoni sosial, dan peran disfungsional. Pokok kajian tulisan ini menyorot pentingnya tatakelola pendidikan tinggi Islam bermutu dalam perspektif Blue Ocean Strategy dalam menghadapi kompleksitas. Pendekatan yang digunakan adalah analisis deskriptif teoritis dan praktis. Temuan penelitian adalah untuk berdaya saing di masa depan, pendidikan tinggi Islam harus berhenti bersaing satu sama lain. Satu-satunya cara untuk mengalahkan kompetisi adalah berhenti berusaha memenangi kompetisi. Blue Ocean Strategy menjadi salah satu alternatif dalam pengelolaan lembaga pendidikan dalam mencetak lulusan yang kompetitif dan unggul.

  4. Morphometric Analysis of Didessa River Catchment in Blue Nile ...

    African Journals Online (AJOL)

    In the present paper an attempt has been made to study the morphometric characteristics of Didessa catchment which is part of Blue Nile River basin located in South Western part of Ethiopia. The study focused on evaluating the effect of morphometric parameters on the hydrology and morphology of the basin. The primary ...

  5. Effects of salinity on growth and metabolism in blue tilapia ...

    African Journals Online (AJOL)

    The results show that the optimum condition for farming blue tilapia, Oreochromis aureus, both with respect to growth rate and metabolic parameters is at salinities lower than 12 ppt. This is an important finding for the tilapia industry. Keywords: Tilapia, salinity, growth, survival, metabolism. African Journal of Biotechnology ...

  6. New Methylene Blue Stain for Malaria Detection on Thin Smears

    Directory of Open Access Journals (Sweden)

    Himanshu D. Mulay

    2017-01-01

    Full Text Available Background: Malaria is the most important parasitic infection of man. Microscopy remains gold standard in malaria diagnosis. Management of malaria requires rapid detection of parasite in human blood. Hence there is a need to develop another diagnostic method with less limitation, which will address this issue. Aim and Objectives: To find a low cost reliable and accurate method for malaria detection on peripheral smear. Material and Methods: A prospective study of 40 cases was done. Two thin smears were prepared for each case; one was stained with Leishman stain and other with new methylene blue stain and examined under oil immersion. The smears were examined individually by two pathologists and results were prepared. Different parasitic morphologic forms were looked for. Parasitemia percentage was calculated. We also compared number of fields required to diagnose with both stains in positive cases. Results: In this study we found that 25 (83.3% cases were detected in less than 50 fields using New Methylene blue stain against 18 (60.0% cases with Leishman stain. We also found 100% sensitivity and specificity for New Methylene blue stain, whereas Leishman stain showed 90% sensitivity and specificity of 85%. Conclusion: The detection of malaria parasite was considerably easy with New Methylene Blue stain and required less time in comparison with Leishman stain.

  7. Blue and Valley Oak Seedling Establishment on California's Hardwood Rangelands

    Science.gov (United States)

    Theodore E. Adams Jr.; Peter B. Sands; William H. Weitkamp; Neil K. McDougald

    1991-01-01

    Factors contributing to poor establishment of blue oak (Quercus douglasii) and valley oak (Q. lobata) in California oak-grassland savannas were studied in a series of acorn seeding experiments initiated in 1985. Exclusion of large herbivores permitted examination of herbaceous interference and small mammal and insect depredation....

  8. There's More to Color than Red, Yellow, and Blue

    Science.gov (United States)

    Goobich, Joel

    2009-01-01

    From an early age, so much emphasis goes into teaching children the fundamentals of color theory, in particular the primary colors of red, yellow, and blue. Toys, building blocks, furniture, and so many other items used in a preschool environment are manufactured in these three colors. Yet, recent research has uncovered that babies as young as…

  9. Blue Ocean versus Competitive Strategy: Theory and Evidence

    NARCIS (Netherlands)

    A.E. Burke (Andrew); A.J. van Stel (André); A.R. Thurik (Roy)

    2009-01-01

    textabstractBlue ocean strategy seeks to turn strategic management on its head by replacing ‘competitive advantage’ with ‘value innovation’ as the primary goal where firms must create consumer demand and exploit untapped markets. Empirical analysis has been focused on case study evidence and so

  10. Genetic diversity and population structure of blue-crested lizard ...

    Indian Academy of Sciences (India)

    Home; Journals; Journal of Genetics; Volume 96; Issue 2. Genetic diversity and population structure of blue-crested lizard, Calotes ... These two lineages are separated by mountain ranges, which play an important role as natural barriers blocking gene flow. Our finding reveal at least two cryptic lineages represented in C.

  11. Biotreatment of anthraquinone dye Drimarene Blue K2RL

    African Journals Online (AJOL)

    ISHIOMA

    Drimarene Blue (Db) K2RL is a reactive anthraquinone dye, used extensively in textile industry, due to poor adsorbability to textile fiber; it has a higher exhaustion rate in wastewater. The dye is toxic, carcinogenic, mutagenic and resistant to degradation. Decolorization of this dye was studied in two different systems.

  12. Models for circumstellar nebulae around red and blue supergiants

    NARCIS (Netherlands)

    Chita, S.M.|info:eu-repo/dai/nl/304832146

    2011-01-01

    In this thesis, we model the circumstellar medium of stars with initial masses of 8, 12, 18 and 20 solar masses, over their entire life from the main sequence until their supernova explosion. During the post-main-sequence stages, stars can evolve through several blue and red supergiant stages

  13. Organic/Inorganic Complex Pigments: Ancient Colors Maya Blue

    Energy Technology Data Exchange (ETDEWEB)

    Polette-Niewold, L.A.; Manciu, F.S.; Torres, B.; Alvarado, M.; Jr.; Chianelli, R.R.

    2009-06-04

    Maya Blue is an ancient blue pigment composed of palygorskite clay and indigo. It was used by the ancient Maya and provides a dramatic background for some of the most impressive murals throughout Mesoamerica. Despite exposure to acids, alkalis, and chemical solvents, the color of the Maya Blue pigment remains unaltered. The chemical interaction between palygorskite and indigo form an organic/inorganic complex with the carbonyl oxygen of the indigo bound to a surface Al{sup 3+} in the Si-O lattice. In addition indigo will undergo an oxidation to dehydroindigo during preparation. The dehydro-indigo molecule forms a similar but stronger complex with the Al{sup 3+}. Thus, Maya Blue varies in color due to the mixed indigo/dehydroindigo complex. The above conclusions are the result of application of multiple techniques (X-ray diffraction, differential thermal analysis/thermal gravimetric analysis, high resolution transmission electron microscopy, scanning electron microscopy, infrared and Raman spectroscopy) to the characterization of the organic/inorganic complex. A picture of the bonding of the organic molecule to the palygorskite surface forming a surface complex is developed and supported by the results of density functional theory calculations. We also report that other organic molecules such as thioindigo form similar organic/inorganic complexes thus, opening an entirely new class of complex materials for future applications.

  14. 76 FR 35909 - Temporary Concession Contract for Blue Ridge Parkway

    Science.gov (United States)

    2011-06-20

    ... lodging accommodations, food and beverage, retail sales, boat rentals, and other services at Crabtree... Doc No: 2011-15060] DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-CONC-0511-7182; 2410-OYC] Temporary Concession Contract for Blue Ridge Parkway AGENCY: National Park Service, Interior...

  15. COS Spectroscopy of White Dwarf Companions to Blue Stragglers

    Science.gov (United States)

    Gosnell, Natalie M.; Geller, Aaron M.; Knigge, Christian; Mathieu, Robert D.; Sills, Alison; Leiner, Emily; Leigh, Nathan

    2017-01-01

    Complete membership studies of open stellar clusters reveal that 25% of the evolved stars follow alternative pathways in stellar evolution, meaning something in the history of these stars changed their composition or mass (or both). In order to draw a complete picture of stellar evolution we must include these canonically "strange" stars in our definition of standard stellar populations. The formation mechanism of blue straggler stars, traditionally defined to be brighter and bluer than the main sequence turnoff in a star cluster, has been an outstanding question for almost six decades. Recent Hubble Space Telescope (HST) far-ultraviolet (far-UV) observations directly reveal that the blue straggler stars in the old (7 Gyr) open cluster NGC 188 are predominantly formed through mass transfer. We will present HST far-UV COS spectroscopy of white dwarf companions to blue stragglers. These white dwarfs are the remnants of the mass transfer formation process. The effective temperatures and surface gravities of the white dwarfs delineate the timeline of blue straggler formation in this cluster. The existence of these binaries in a well-studied cluster environment provides an unprecedented opportunity to observationally constrain mass transfer models and inform our understanding of many other alternative pathway stellar products.

  16. Aspects of the Breeding Biology of Blue-Billed Weaver ...

    African Journals Online (AJOL)

    Abstract. Some aspects of the breeding biology of the Blue-billed Weaver Spermophaga haematina were examined for two consecutive years (i.e. 1999 and 2000). ... The long breeding period showed the efficiency with which the species may have utilized different food resources and hence occupy broad feeding niches.

  17. Is this Red Spot the Blue Spot (locus ceruleum)?

    Energy Technology Data Exchange (ETDEWEB)

    Choe, Won Sick; Lee, Yu Kyung; Lee, Min Kyung; Hwang, Kyung Hoon [Gachon University Gil Hospital, Incheon (Korea, Republic of)

    2010-06-15

    The authors report brain images of 18F-FDG-PET in a case of schizophrenia. The images showed strikingly increased bilateral uptake in the locus ceruleum. The locus ceruleum is called the blue spot and known to be a center of the norepinephrinergic system.

  18. REVIEW ARTICLE Blue extension of optical fibre supercontinuum generation

    Science.gov (United States)

    Travers, J. C.

    2010-11-01

    Supercontinuum generation in optical fibres pumped with high power pulse sources in the modulation instability regime is reviewed. The physical mechanisms and supercontinuum dynamics are described in detail. Routes to optimized output in terms of spectral flatness and particularly blue and ultraviolet spectral extent are presented, including the use of cascaded and tapered photonic crystal fibres.

  19. Biotreatment of anthraquinone dye Drimarene Blue K 2 RL | Siddiqui ...

    African Journals Online (AJOL)

    Drimarene Blue (Db) K2RL is a reactive anthraquinone dye, used extensively in textile industry, due to poor adsorbability to textile fiber; it has a higher exhaustion rate in wastewater. The dye is toxic, carcinogenic, mutagenic and resistant to degradation. Decolorization of this dye was studied in two different systems.

  20. Immunocytochemistry in the diagnosis of small blue cell tumours of ...

    African Journals Online (AJOL)

    Summary. Objective: This study attempts to define a limited, cost effective, reliable primary panel of antibodies for immu- nohistology, as an adjunct to morphological features, for the diagnosis of Small Blue Cell Tumors (SBCT) which would be convenient for use in low resource settings to improve their diagnostic accuracy.

  1. Characterization of blue green algae isolated from Egyptian rice ...

    African Journals Online (AJOL)

    Characterization of blue green algae isolated from Egyptian rice field with potential anti-hepatitis C active components. ... Cell lysate was prepared from the purified strain; the efficacy of this lysate to prevent hepatitis C virus (HCV) replication in vitro was proved qualitatively and quantitatively. Lysate prepared from isolated ...

  2. Use of Aspergillus wentii for biosorption of methylene blue from ...

    African Journals Online (AJOL)

    In this study, Aspergillus wentii was used as a biosorbent for the adsorption of methylene blue from aqueous solution. The effects of contact time, initial dye concentration, solution pH and temperature on biosorption were investigated. The contact time required (that is, the equilibrium time) for maximum dye biosorption was ...

  3. Methylene blue (cationic dye) adsorption into Salvadora persica ...

    African Journals Online (AJOL)

    Methylene blue (MB) is the most commonly used substance for dyeing cotton, wood and silk. On inhalation, it can cause difficulty in breathing, while on direct contact, it may cause permanent injury of the eyes of human and animals, burning sensations, nausea, worming, profuse sweating, mental confusion and ...

  4. Sorption characteristics of methylene blue onto Nypa fruiticans lignin ...

    African Journals Online (AJOL)

    The sorption characteristics of soda lignin extracted from Nypa fruiticans for the removal of methylene blue dye from aqueous solution was investigated in this study, as an ethically sound way of utilizing this unexploited abundant natural resource. Equilibrium data were fitted to the Langmuir and Freundlich isotherm ...

  5. Detection of tissue expander leakage by methylene blue instillation ...

    African Journals Online (AJOL)

    Background: Tissue expansion is an important and widely used technique of soft tissue reconstruction. Leakage of the expanders is one of the complications and it might at times be difficult to detect. Method and Conclusion: We used methylene blue stained saline for inflation of tissue expanders in 42 cases and found it to ...

  6. FIXED-BED COLUMN ADSORPTION OF METHYL BLUE USING ...

    African Journals Online (AJOL)

    userpc

    ABSTRACT. Axle Wood Carbon (AWC) was used to study the removal of Methyl Blue (MB) from its aqueous solution in a fixed-bed column adsorption system. The adsorbent (AWC) was characterized using SEM and pHPZC. SEM revealed the surface morphology and from the pHPZC determination, it was found that at pH ...

  7. Methylene Blue-Ascorbic Acid: An Undergraduate Experiment in Kinetics.

    Science.gov (United States)

    Snehalatha, K. C.; And Others

    1997-01-01

    Describes a laboratory exercise involving methylene blue and L-ascorbic acid in a simple clock reaction technique to illustrate the basic concepts of chemical kinetics. If stock solutions are supplied and each type of experiment takes no more than half an hour, the entire investigation can be completed in three practical sessions of three hours…

  8. Using methylene blue for perioperative localization of the hydrocele ...

    African Journals Online (AJOL)

    Using methylene blue for perioperative localization of the hydrocele sac in boys. O. A. Sowande, T. A. Olajide. Paediatric Surgery Unit, Obafemi Awolowo University/Obafemi Awolowo University Teaching Hospital, Ile Ife,. Osun State, Nigeria. Correspondence to: Dr. O. A. Sowande, Paediatric Surgery Unit, Obafemi Awolowo ...

  9. Intraoperatively Testing the Anastomotic Integrity of Esophagojejunostomy Using Methylene Blue.

    Science.gov (United States)

    Celik, S; Almalı, N; Aras, A; Yılmaz, Ö; Kızıltan, R

    2017-03-01

    Intraoperative testing of gastrointestinal anastomosis effectively ensures anastomotic integrity. This study investigated whether the routine use of methylene blue intraoperatively identified leaks to reduce the postoperative proportion of clinical leaks. This study retrospectively analyzed consecutive total gastrectomies performed from January 2007 to December 2014 in a university hospital setting by a general surgical group that exclusively used the methylene blue test. All surgeries were performed for gastric or junctional cancers (n = 198). All reconstructions (Roux-en Y esophagojejunostomy) were performed using a stapler. The methylene blue test was used in 108 cases (group 1) via a nasojejunal tube. No test was performed for the other 90 cases (group 2). Intraoperative leakage rate, postoperative clinical leakage rate, length of hospitalization, and mortality rate were the outcome measures. The intraoperative leakage rate was 7.4% in group 1. The postoperative clinical leakage rate was 8.6%. The postoperative clinical leakage rate was 3.7% in group 1 and 14.4% in group 2 (p = 0.007). There were no postoperative clinical leaks when an intraoperative leak led to concomitant intraoperative repair. The median length of hospital stay was 6 days in group 1 and 8 days in group 2 (p methylene blue test for esophagojejunostomy is a safe and reliable method for the assessment of anastomosis integrity, especially in cases with difficult esophagojejunostomic construction.

  10. Spatial interaction of methylene blue stained soil pores

    NARCIS (Netherlands)

    Stein, A.; Lieshout, van M.N.M.; Booltink, H.W.G.

    2001-01-01

    In this paper, we compare different types of patterns that emerge when applying methylene blue dye as a tracer on soils to detect preferential flow paths as a result of large cracks. Patterns on channels, vughs and cracks are analyzed with the J-function and with indicator variograms. By means of a

  11. Interaction mode between methylene blue-Sm(III) complex and ...

    African Journals Online (AJOL)

    Spectroscopic and viscosity methods were applied to investigate the interaction between methylene blue (MB)-Sm(III) complex and herring sperm DNA by using acridine orange as a spectral probe in Tris-HCl buffer (pH 7.40). By means of molar ratio method, the binding ratios between MB-Sm(III)and DNA were determined ...

  12. Removal of basic dye methylene blue by using bioabsorbents Ulva ...

    African Journals Online (AJOL)

    In the present study, the removal of textile dye methylene blue was studied by adsorption technique using adsorbents such as, alumina, Ulva lactuca and Sargassum (Maine algae). The batch technique was adopted under the optimize condition of amount of adsorbent, stay time, concentration, temperature and pH. By using ...

  13. Wiring of heme enzymes by methylene-blue labeled dendrimers

    DEFF Research Database (Denmark)

    Álvarez-Martos, Isabel; Shahdost-fard, Faezeh; Ferapontova, Elena

    2017-01-01

    - and molibdopterin-containing sulfite oxidase (SOx), wired to gold by the methylene blue (MB)-labeled polyamidoamine (PAMAM) dendrimers. The enzymes’ electrochemical transformation and bioelectrocatalytic function could be followed at both unlabeled and MB-labeled dendrimer-modified electrodes with the formal redox...

  14. INTERACTION MODE BETWEEN METHYLENE BLUE-Sm(III ...

    African Journals Online (AJOL)

    Preferred Customer

    ABSTRACT. Spectroscopic and viscosity methods were applied to investigate the interaction between methylene blue (MB)-Sm(III) complex and herring sperm DNA by using acridine orange as a spectral probe in Tris-HCl buffer (pH 7.40). By means of molar ratio method, the binding ratios between MB-Sm(III) and DNA ...

  15. Adsorption of methylene blue from aqueous solution on the surface ...

    African Journals Online (AJOL)

    Adsorption of dye methylene blue from aqueous solution on the surface of sheep wool and cotton fibers was accomplished under the optimize conditions of temperature, concentration, pH, stay time duration and quantity of adsorbent. Spectrometric technique was used for the measurements of concentration of dye before ...

  16. Column removal of methylene blue using activated carbon derived ...

    African Journals Online (AJOL)

    This study investigated column and batch sorption of methylene blue from solution using activated carbon produced from water spinach. The equilibrium data of the batch sorption process was analyzed using Langmuir and Freundlich isotherm models and the monolayer sorption capacity (441 mg/g) obtained from the ...

  17. The interaction between methylene blue and the cholinergic system

    NARCIS (Netherlands)

    Pfaffendorf, M.; Bruning, T. A.; Batnik, H. D.; van Zwieten, P. A.

    1997-01-01

    1. The inhibitory effects of methylene blue (MB) on different types of cholinesterases and [3H]-N-methylscopolamine ([3H]-NMS) binding to muscarinic receptors were studied. 2. Human plasma from young healthy male volunteers, purified human pseudocholinesterase and purified bovine true

  18. Decolourisation and degradation of reactive blue 2 by sulphate ...

    African Journals Online (AJOL)

    This work was performed to determine the influence of heat treatment on sewage sludge and addition of zero valent iron (ZVI) on the degradation and decolourisation of an anthraquinone dye, reactive blue 2 (RB 2). A consortium of sulphate reducing bacteria (SRB) in a biosulphidogenic batch reactor with biodigester ...

  19. Use of simple sequence repeat (SSR) markers for screening blue ...

    African Journals Online (AJOL)

    Aghomotsegin

    2015-10-14

    Oct 14, 2015 ... Blue disease of cotton is an economically important disease of the crop first described from the Central. African Republic and spread to other countries. Brazil and other South American countries record crop losses of up to 80% from infection but no cases of the disease have been reported in Tanzania.

  20. Does Blue Uniform Color Enhance Winning Probability in Judo Contests?

    NARCIS (Netherlands)

    Dijkstra, P.D.; Preenen, P.T.Y.; Essen, H. van

    2018-01-01

    The color of an athlete's uniform may have an effect on psychological functioning and consequently bias the chances of winning contests in sport competition. Several studies reported a winning bias for judo athletes wearing a blue outfit relative to those wearing a white outfit. However, we argue

  1. Genetic diversity and population structure of blue-crested lizard ...

    Indian Academy of Sciences (India)

    Weerachai Saijuntha

    2017-06-19

    Jun 19, 2017 ... Abstract. The blue-crested lizard, Calotes mystaceus Duméril & Bibron, 1837, is listed as a protected wild animal in Thailand. Its population is likely to be dramatically reduced due to massive hunting in several areas in this country. Basic information on its population genetics is therefore needed to facilitate ...

  2. Forest health in the Blue Mountains: social and economic perspectives.

    Science.gov (United States)

    T.M. Quigley

    1992-01-01

    The Blue Mountains of northeast Oregon and southeast Washington are among the most insect- and disease-infested forests of North America. The communities, industries, rural residents, and economies that are highly dependent on the flow of natural resources are being stressed as uncertainty increases over future resource availability. This paper examines, from social...

  3. Blue rubber bleb naevus syndrome: A rare cause of gastrointestinal ...

    African Journals Online (AJOL)

    Blue rubber bleb naevus syndrome (BRBNS) is characterised by vascular malformations of the skin and gastrointestinal tract. We present the rare case of BRBNS in an African child. She presented with large-volume gastrointestinal bleeding and was managed by on-table colonoscopic identification and surgical excision, ...

  4. Sequential serotonin and noradrenalin associated processes involved in postpartum blues

    NARCIS (Netherlands)

    Doornbos, B.; Fekkes, D.; Tanke, M.A.; de Jonge, P.; Korf, J.

    2008-01-01

    Objective: We investigated whether postpartum blues was related to changes in parameters of noradrenergic and serotonergic functioning. Methods: From 26 healthy pregnant women blood was collected at the End of pregnancy and 5 days and 6 weeks postpartum. Serotonergic parameters were: platelet

  5. Blue and white light electroluminescence in a multilayer OLED using ...

    Indian Academy of Sciences (India)

    Administrator

    device (OLED)-based technology to develop blue electroluminescence for full ... used widely because of its strong green emission at. ~ 515 nm, ability to act as .... port gap and optical gap are 5⋅82, 1⋅66, 4⋅16 and. 2⋅83 eV, respectively.

  6. Kinetics and Mechanism of the Oxidation of Coomassie Brilliant Blue ...

    African Journals Online (AJOL)

    NICOLAAS

    order kinetics, the oxidation of the dye occurred ... coloured and polluted.1 In this communication we focus on the degradation of Brilliant Blue-R ... water.10 We have also reported the oxidation kinetics and mecha- nisms of reactions of triaryl11 ...

  7. Methylene blue adsorption from glycerol solution onto the acicular ...

    African Journals Online (AJOL)

    The mechanism of methylene blue adsorption onto the surface of synthetic acicular habit of α-goethite from glycerol solution has been studied through batch experiment at 25, 30 and 35 0C in a glass cell of minimal dead volume. To describe the adsorption results, an attempt was made to fit the data to the Langmuir, ...

  8. 33 CFR 100.910 - Southland Regatta; Blue Island, IL.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Southland Regatta; Blue Island, IL. 100.910 Section 100.910 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Island, IL. (a) Regulated Area. A regulated area is established to include all waters of the Calumet Sag...

  9. Active substance from some blue green algal species used as ...

    African Journals Online (AJOL)

    To achieve this target, five different extracts (ethyl acetate, chloroform, diethyl ether, methanol and water) from three blue green algal species (Anabaena flos aquae (Linnaeus) Bory; Anabaena variabilis (Kützing) and Oscillatoria angustissima West and West) were examined. This different algal extracts were tested in vitro ...

  10. An evaluation of the Methylene Blue Reduction Method Used for ...

    African Journals Online (AJOL)

    Milk samples 9130) taken from raw milk received at Swaziland Dairy Board processing plant were analyzed for dye reduction and plate counts. Samples were highest in ... This supported the conclusion that the methylene blue test did not accurately estimate the bacterial load of the raw milk in Swaziland. UNISWA Research ...

  11. Cloning and expression analysis of a blue copperbinding protein ...

    African Journals Online (AJOL)

    Adifferentially expressed fragment EST145 was isolated by suppression subtractive hybridization (SSH) method. Using EST145 as the probe, a blue copper-binding protein gene designated as DvBCB was screened from Dasypyrum villosum cDNA Library. The DvBCB gene was 845 bp in length with an open reading frame ...

  12. Monitoring of the endemic Sinai Baton Blue butterfly Pseudophilotes ...

    African Journals Online (AJOL)

    Results of the monitoring of the Sinai Baton Blue butterfly in its stronghold of Farsh Shoeib on Gebel Safsafa in the St Katherine Protectorate between 2004-9 is analysed to compare them with the detailed study of Mike James in 2002-3. The butterfly appears to have a three-year population cycle, with its population crashing ...

  13. Detection of naphthalene by the blue crab, Callinectes sapidus

    Energy Technology Data Exchange (ETDEWEB)

    Pearson, W.H.; Olla, B.L.

    1979-03-01

    Increases in the antennular flicking rate indicated that blue crabs, Callinectes sapidus, detected the petroleum hydrocarbon naphthalene. A low incidence of aggressive displays but no food searching or gathering followed naphthalene detection. The results suggest that the chemosensory abilities of decapod crustaceans cover a broader range of substances than previously supposed.

  14. Age, growth and reproductive biology of the blue shark Prionace ...

    African Journals Online (AJOL)

    The age, growth and reproductive biology of the blue shark Prionace glauca from South African waters were assessed using 205 specimens, ranging in total length (TL) from 72 to 313 cm. Greater number of males (120) than females (85) were examined as they were more frequently caught. Age and growth parameters ...

  15. Report on the Workshop ''Ecology of Blue Straggler Stars''

    Science.gov (United States)

    Boffin, H.; Carraro, G.; Beccari, G.

    2013-03-01

    The last workshop dedicated to blue straggler stars (BSS) took place 20 years ago and there have been a great number of subsequent developments since in both observations and theory. The wide range of BSS topics covered at the workshop are briefly summarised; the published proceedings will form the first book on the subject.

  16. Blue Light Emitting Polyphenylene Dendrimers with Bipolar Charge Transport Moieties

    Directory of Open Access Journals (Sweden)

    Guang Zhang

    2016-10-01

    Full Text Available Two light-emitting polyphenylene dendrimers with both hole and electron transporting moieties were synthesized and characterized. Both molecules exhibited pure blue emission solely from the pyrene core and efficient surface-to-core energy transfers when characterized in a nonpolar environment. In particular, the carbazole- and oxadiazole-functionalized dendrimer (D1 manifested a pure blue emission from the pyrene core without showing intramolecular charge transfer (ICT in environments with increasing polarity. On the other hand, the triphenylamine- and oxadiazole-functionalized one (D2 displayed notable ICT with dual emission from both the core and an ICT state in highly polar solvents. D1, in a three-layer organic light emitting diode (OLED by solution processing gave a pure blue emission with Commission Internationale de l’Éclairage 1931 CIE xy = (0.16, 0.12, a peak current efficiency of 0.21 cd/A and a peak luminance of 2700 cd/m2. This represents the first reported pure blue dendrimer emitter with bipolar charge transport and surface-to-core energy transfer in OLEDs.

  17. Movement patterns and survival estimates of Blue Cranes in the ...

    African Journals Online (AJOL)

    The Western Cape population of Blue Cranes Anthropoides paradiseus is the species' largest and most stable population. How this population utilises the agricultural landscape of the Western Cape, how far individuals disperse and the connectivity between subpopulations is unknown. Basic demographic parameters such ...

  18. Wild edible mushrooms in the Blue Mountains: resource and issues.

    Science.gov (United States)

    Catherine G. Parks; Craig L. Schmitt

    1997-01-01

    This paper reviews the wild mushroom resource of the Blue Mountains of northeastern Oregon and southeastern Washington and summarizes issues and concerns for regulation, monitoring, and management. Existing biological information on the major available commercial mushrooms in the area, with emphasis on morels, is presented. Brief descriptions of the most commonly...

  19. Adorno’s Grey, Taussig’s Blue

    DEFF Research Database (Denmark)

    Beyes, Timon; De Cock, Christian

    2017-01-01

    theory and organization studies, we discuss colour as a primary phenomenon for the study of ‘critical affect’. We then trace colour’s affect in conditioning the unfolding of organization in two particular ‘colour/spaces’ – Adorno’s grey and Taussig’s blue of our title – and discuss both its ambiguity...

  20. Kinetics and Mechanism of the Oxidation of Coomassie Brilliant Blue ...

    African Journals Online (AJOL)

    NICOLAAS

    , Private. Bag X54001, Durban 4000, South Africa. *Corresponding author: jonnalagaddas@ukzn.ac.za. Supplementary information: S. Afr. J. Chem., 2015, 68, 85–92. Figure S1. 1H NMR spectrum for brilliant blue-R major oxidation product.