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Sample records for mati jaas enno

  1. [The present status and attempts toward the achievement of gender equality in the JAA].

    PubMed

    Senba, Emiko

    2013-09-01

    The proportion of female members in The Japanese Association of Anatomists (JAA) is 18% with the proportion of female members higher among the young generation (20-30 Y.O.; 34.8%, 30-40 Y.O.; 26.8%). However, the number of female members in the Board of Directors has been zero or one (0 or 6%) for many years. More than two female members are necessary on the Board to promote the diversity in the management of the JAA. The numbers of female members in other committees has shown gradual increase in recent years. A substantial increase in female faculty members including professors in each university and school will support the future development of the anatomical research field and the association. We have made the first great step by setting up the committee on promotion of gender equality in JAA in March, 2011. In the next year, JAA became a member of Japan Inter-Society Liaison Association Committee for Promoting Equal Participation of Men and Women in Science and Engineering (EPMEWSE). Our committee's activity includes holding workshops and seminars at the annual meetings to promote gender equality in the research field and to encourage mutual support and friendship, not only among women members but also among all members. PMID:24066390

  2. Mati-ism and Black Lesbianism.

    PubMed

    Wekker, G

    1997-01-01

    Abstract There are different ways in which black women in the Diaspora have given expression to their erotic fascination with other women. In this article two idealtypical expressions of black female homosexuality and the outlines of their underlying cosmologies are sketched: mati-ism and black lesbianism. Mati (or matisma) is the Sranan Tongo word for women who have sexual relations with other women, but who typically also will have had or still have relationships with men, simultaneously. More often than not they will also have children. While both types can only be understood via a constructionist view of homosexuality, the institution of mati-ism will be shown to have retained more Afrocentric, working class elements, while black lesbianism has more middle class, Eurocentric features. PMID:24784944

  3. Computational Screening of the Human TF-Glycome Provides a Structural Definition for the Specificity of Anti-Tumor Antibody JAA-F11

    PubMed Central

    Tessier, Matthew B.; Grant, Oliver C.; Heimburg-Molinaro, Jamie; Smith, David; Jadey, Snehal; Gulick, Andrew M.; Glushka, John; Deutscher, Susan L.; Rittenhouse-Olson, Kate; Woods, Robert J.

    2013-01-01

    Recombinant antibodies are of profound clinical significance; yet, anti-carbohydrate antibodies are prone to undesirable cross-reactivity with structurally related-glycans. Here we introduce a new technology called Computational Carbohydrate Grafting (CCG), which enables a virtual library of glycans to be assessed for protein binding specificity, and employ it to define the scope and structural origin of the binding specificity of antibody JAA-F11 for glycans containing the Thomsen-Friedenreich (TF) human tumor antigen. A virtual library of the entire human glycome (GLibrary-3D) was constructed, from which 1,182 TF-containing human glycans were identified and assessed for their ability to fit into the antibody combining site. The glycans were categorized into putative binders, or non-binders, on the basis of steric clashes with the antibody surface. The analysis employed a structure of the immune complex, generated by docking the TF-disaccharide (Galβ1-3GalNAcα) into a crystal structure of the JAA-F11 antigen binding fragment, which was shown to be consistent with saturation transfer difference (STD) NMR data. The specificities predicted by CCG were fully consistent with data from experimental glycan array screening, and confirmed that the antibody is selective for the TF-antigen and certain extended core-2 type mucins. Additionally, the CCG analysis identified a limited number of related putative binding motifs, and provided a structural basis for interpreting the specificity. CCG can be utilized to facilitate clinical applications through the determination of the three-dimensional interaction of glycans with proteins, thus augmenting drug and vaccine development techniques that seek to optimize the specificity and affinity of neutralizing proteins, which target glycans associated with diseases including cancer and HIV. PMID:23365681

  4. Phytoplankton composition of the water and gastrointestinal tract of the mussel Diplodon enno (Ortmann, 1921) from São Francisco river (Bahia, Brazil).

    PubMed

    Alves, T; Lima, P; Lima, G M S; Cunha, M C C; Ferreira, S; Domingues, B; Machado, J

    2016-06-01

    The knowledge on diet composition of the freshwater mussel Diplodon enno (Ortmann) would aid in its culture and propagation allowing, this way, the replacement of natural endangered populations in Brazil. Microalgae are the main food source for captive mussels and unionids have displayed an ability to sort algae based on the cellular characteristics prior to ingestion. The main objective of the present work is to analyze the phytoplankton composition of the water from and of the gastrointestinal contents of the mussel D. enno, as an initial step for development of a suitable rearing diet. Therefore, water samples and bivalve specimens were collected from S. Francisco River, city of Paulo Afonso, Bahia, Brazil. The microalgal composition found in water and stomach/gut content samples was very diverse being represented by the following divisions: Cyanophyta, Chlorophyta, Dinophyta and Heterokontophyta (Diatoms). Concerning the relative abundance of microalgae divisions, it is possible to state, for the water and gastrointestinal contents, that Cyanophyta represents 15% and 14%, Chlorophyta 54% in both, Heterokontophyta 31% and 27% and Dinophyta 0% and 5%, respectively. According to the Brazilian CETESB criteria for phytoplankton species classification, 50% of Cyanophyta and 15% of Chlorophyta species observed in the water samples were classified as "very frequent", as were 68% of Heterokontophyta and 33% of Chlorophyta species in the gut/stomach tract samples. Focusing at a species level, although in the water only Coelastrum sp. and Chroococcus sp. were observed in 100% and 75% of the samples, respectively, in the gastrointestinal tract the species Staurastrum sp., Aulacoseira sp., Scenedesmus sp. and Fragilaria crotonensis occurred in 80% to 100% of the samples. The present results showed that D. enno feeds not only on small chlorophytes microalgae, due to their convenient size that facilitates higher feeding rates, but also on large size diatoms, due to a possible

  5. Mass-Analyzed Threshold Ionization (MATI) Spectroscopy of Atoms and Molecules using VUV Synchrotron Radiation

    SciTech Connect

    Kostko, Oleg; Kim, Sang Kyu; Leone, Stephen R.; Ahmed, Musahid

    2009-01-28

    Mass-analyzed threshold ionization (MATI) spectroscopy using synchrotron radiation (Advanced Light Source, Lawrence Berkeley National Laboratory) has been performed for Ar, N2, O2, N2O, H2O, C2H2, and C6H6. MATI allows for a better determination of ionization energies compared to those derived from photoionization efficiency curves traditionally used in synchrotron photoionization mass spectrometry. The separation of the long-lived Rydberg state from the directly-formed prompt ion, essential for a meaningful MATI spectrum, has been accomplished by employing an arrangement of ion optics coupled to unique electric-field pulsing schemes. For Ar, a number of resolved bands below the ionization energy are observed, and these are ascribed to high-n,l Rydberg states prepared in the MATI scheme. The first vibrational stateresolved MATI spectra of N2 and O2 are reported and spectral characteristics are discussed in comparison with previously-reported threshold photoelectron spectroscopic studies. While MATI performed with synchrotron radiation is intrinsically less sensitive compared to laser based sources, this work demonstrates that MATI spectroscopy performed with widely tunable VUV radiation is a complementary technique for studying the ionization spectroscopy of polyatomic molecules.

  6. Mati-ism and black lesbianism: two idealtypical expressions of female homosexuality in black communities of the Diaspora.

    PubMed

    Wekker, G

    1993-01-01

    There are different ways in which black women in the Diaspora have given expression to their erotic fascination with other women. In this article two idealtypical expressions of black female homosexuality and the outlines of their underlying cosmologies are sketched: mati-ism and black lesbianism. Mati (or matisma) is the Sranan Tongo word for women who have sexual relations with other women, but who typically also will have had or still have relationships with men, simultaneously. More often than not they will also have children. While both types can only be understood via a constructionist view of homosexuality, the institution of mati-ism will be shown to have retained more Afrocentric, working class elements, while black lesbianism has more middle class, Eurocentric features. PMID:8505534

  7. Voyage dans le noir. Trous noirs, matière noire, énergie noire et antimatière

    SciTech Connect

    2009-11-26

    Et si nous faisions avec les physiciens un voyage dans le noir ? De l'astrophysique à la physique des particules les trois noirs, la matière noire, l'énergie noire ou l’antimatière intriguent et fascinent. Que sont ces objets qui bousculent nos idées et qui véhiculent parfois des craintes irraisonnées? Luis Alvarez-Gaume, Michael Doser et Christophe Grojean, physiciens du CERN vous invitent à mettre en lumière (!) les constituants de base de la matière et à explorer les mystères de la physique contemporaine. Une soirée lumineuse pour éclairer des concepts et ne plus avoir peur du noir.

  8. Voyage dans le noir. Trous noirs, matière noire, énergie noire et antimatière

    ScienceCinema

    None

    2011-10-06

    Et si nous faisions avec les physiciens un voyage dans le noir ? De l'astrophysique à la physique des particules les trois noirs, la matière noire, l'énergie noire ou l?antimatière intriguent et fascinent. Que sont ces objets qui bousculent nos idées et qui véhiculent parfois des craintes irraisonnées? Luis Alvarez-Gaume, Michael Doser et Christophe Grojean, physiciens du CERN vous invitent à mettre en lumière (!) les constituants de base de la matière et à explorer les mystères de la physique contemporaine. Une soirée lumineuse pour éclairer des concepts et ne plus avoir peur du noir.

  9. One-photon mass-analyzed threshold ionization (MATI) spectroscopy of pyridine: Determination of accurate ionization energy and cationic structure

    SciTech Connect

    Lee, Yu Ran; Kang, Do Won; Kim, Hong Lae E-mail: hlkim@kangwon.ac.kr; Kwon, Chan Ho E-mail: hlkim@kangwon.ac.kr

    2014-11-07

    Ionization energies and cationic structures of pyridine were intensively investigated utilizing one-photon mass-analyzed threshold ionization (MATI) spectroscopy with vacuum ultraviolet radiation generated by four-wave difference frequency mixing in Kr. The present one-photon high-resolution MATI spectrum of pyridine demonstrated a much finer and richer vibrational structure than that of the previously reported two-photon MATI spectrum. From the MATI spectrum and photoionization efficiency curve, the accurate ionization energy of the ionic ground state of pyridine was confidently determined to be 73 570 ± 6 cm{sup −1} (9.1215 ± 0.0007 eV). The observed spectrum was almost completely assigned by utilizing Franck-Condon factors and vibrational frequencies calculated through adjustments of the geometrical parameters of cationic pyridine at the B3LYP/cc-pVTZ level. A unique feature unveiled through rigorous analysis was the prominent progression of the 10 vibrational mode, which corresponds to in-plane ring bending, and the combination of other totally symmetric fundamentals with the ring bending overtones, which contribute to the geometrical change upon ionization. Notably, the remaining peaks originate from the upper electronic state ({sup 2}A{sub 2}), as predicted by high-resolution photoelectron spectroscopy studies and symmetry-adapted cluster configuration interaction calculations. Based on the quantitatively good agreement between the experimental and calculated results, it was concluded that upon ionization the pyridine cation in the ground electronic state should have a planar structure of C{sub 2v} symmetry through the C-N axis.

  10. Caractérisation et préconcentration granulométrique de la matière feldspathique d'Ain-Barbar, Algérie

    NASA Astrophysics Data System (ADS)

    Djouama, M. C.; Bounouala, M.; Ain-Souya, A.; Ghers, M.

    2005-05-01

    Les feldspaths sont répandus dans l'écorce terrestre mais seuls les feldspaths potassiques et sodiques sont très recherchés dans l'industrie céramique et verrière. Pour qu'ils soient utilisables, ces matériaux doivent contenir très peu d'impuretés nocives de fer et surtout de silice. La carrière d'Ain-Barbar exploite la matière feldspathique de teneurs moyennes respectives 74,5% SiO{2}, 9,5% 12,75% Al{2}O{3}, 1,30% Fe{2}O{3} et 9,5 K{2}O (0,90% Na{2}O). Toutefois, on constate un taux très élevé en quartz ce qui diminue la valeur du produit marchand et une teneur élevée en fer ce qui donne au produit fabriqué, des aspects de coloration le rendant impropre à la commercialisation. A cet effet, une caractérisation minéralogique et chimique a été réalisée sur une série d'échantillons prélevés du site d'extraction de la substance utile. Des essais de préconcentration granulométrique ont montré qu'un classement dimensionnel peut offrir une qualité de produits acceptables par les céramistes.

  11. Analysis of the (1)A' S1 ← (1)A' S0 and (2)A' D0 ← (1)A' S1 band systems in 1,2-dichloro-4-fluorobenzene by means of resonance-enhanced-multi-photon-ionization (REMPI) and mass-analyzed-threshold-ionization (MATI) spectroscopy.

    PubMed

    Krüger, Sascha; Grotemeyer, Jürgen

    2016-03-14

    Resonance enhanced multiphoton ionization (REMPI) and mass analyzed threshold ionization (MATI) spectroscopy have been applied in order to investigate the vibrational structure of 1,2-dichloro-4-fluorobenzene (1,2,4-DCFB) in its first excited state (S1) and the cationic ground state (D0). The selection of the state prior to ionization resulted in MATI spectra with different intensity distributions thus giving access to many vibrational levels. To support the experimental findings, geometry optimizations and frequency analyses at DFT (density functional) and TDDFT (time-dependent density functional) levels of theory have been applied. Additionally, a multidimensional Franck-Condon approach has been used to calculate the vibrational intensities from the DFT calculations. An excellent agreement between simulated and measured REMPI and MATI spectra allowed for a confident assignment of vibrational levels and mechanisms active during excitation and ionization. In order to avoid any ambiguity regarding the assignment of the vibrational bands to normal modes, Duschinsky normal mode analysis has been performed to correlate the ground state (S0) normal modes of 1,2,4-DCFB with the benzene derived Wilson nomenclature. From the REMPI spectra the electronic excitation energy (EE) of 1,2-dichloro-4-fluorobenzene could be determined to be 35 714 ± 2 cm(-1) while the MATI spectra yielded the adiabatic ionization energy (IE) of 1,2-dichloro-4-fluorobenzene which could be determined to be 73 332 ± 7 cm(-1). PMID:26884269

  12. An international comparison of mass fraction purity assignment of digoxin: The Comité Consultatif pour la Quantité de Matière (CCQM) Pilot Study CCQM-P20.f (Digoxin)

    NASA Astrophysics Data System (ADS)

    Westwood, S.; Josephs, R.; Choteau, T.; Mesquida, C.; Daireaux, A.; Wielgosz, R.; Davies, S.; Windust, A.; Kang, M.; Ting, H.; Kato, K.; Frias, E.; Pérez, M.; Apps, P.; Fernandes-Whaley, M.; Wiangnon, K.; Ruangrittinon, N.; Wood, S.; LeGoff, T.; Duewer, D.; Schantz, M.; Siekmann, L.; Esker, J.

    2011-01-01

    Under the auspices of the Organic Analysis Working Group (OAWG) of the Comité Consultatif pour la Quantité de Matière (CCQM) a laboratory comparison, CCQM-P20.f, was coordinated by the Bureau International des Poids et Mesures (BIPM) in 2007/2008. Nine national measurement institutes, four expert laboratories and the BIPM participated in the comparison. Participants were required to assign the mass fraction of digoxin present as the main component in the comparison sample (CCQM-P20.f) which consisted of digoxin material obtained from a commercial supplier stated to comply with USP requirements. In addition to assigning the mass fraction content of digoxin for the material, participants were requested, but not obliged, to provide mass fraction estimates for the minor components they identified in each sample. In contrast with the previous round of the CCQM-P20 series, in which the mass fraction content of theophylline in two comparison samples (CCQM-P20.e.1 and CCQM-P20.e.2) was determined, a wider range of results were reported for the mass fraction content of digoxin in the CCQM-P20.f comparison. A minority of participants did not appear to use conditions capable of fully resolving and/or quantifying the major related structure impurities present in the comparison sample. Among those that did achieve suitable separations, there was further variation in their reported quantifications of the individual and total related substance content which reflected in part the limited availability of reference standards for these materials and the resulting assumptions that had to be made regarding the structure and response factors relative to digoxin for each individual impurity. This was particularly relevant because of the span of molecular masses of the impurities present in the sample, which ranged from aglycones to glycones with tetrameric carbohydrate chains, relative to that of digoxin. A significant additional factor also contributed to the observed variation of

  13. Étude expérimentale de l'interaction laser-matière dans le cas du soudage d'un acier inoxydable austénitique par laser Nd:YAG continu de 2 kW

    NASA Astrophysics Data System (ADS)

    Dumord, E.; Jouvard, J. M.; Grevey, D.; Druetta, M.; Ottavi, P.

    1997-05-01

    The laser-matter interaction acting during cw 2 kW Nd:YAG laser welding of an austenitic stainless steel is studied and particulary the effects linked to the presence of a keyhole in the liquid bath. This is done in order to define parameters useful to the process modelling. The absorption factor of target has been measured in order to better understand the Nd:YAG laser/stainless steel 304 interaction. Then an experimental approach of the keyhole angle value determination is proposed. Values are presented showing the important keyhole angle at the bottom of the bead. Finally a study relative to the plume above the keyhole shows that it is responsible for the formation of the nail-head part, observed on the experimental melting zone, by laser beam scattering. L'interaction laser-matière se produisant lors du soudage par laser Nd:YAG continu de 2kW d'un acier inoxydable austénitique est étudiée, et notamment les effets liés à la présence du capillaire dans le bain liquide, de façon à définir les paramètres utiles à la modélisation du processus. Le facteur d'absorption des cibles utilisées a été mesuré afin de mieux appréhender l'interaction laser Nd:YAG/acier inoxydable austénitique 304. Puis une approche expérimentale de détermination de l'angle d'inclinaison du capillaire est proposée. Des valeurs sont présentées montrant la forte inclinaison du capillaire en fond de cordon. Finalement une étude relative au panache présent audessus du capillaire met en évidence qu'il est responsable de la formation de la partie en tête de clou observée sur les zones fondues expérimentales par diffusion du faisceau laser

  14. Explorer : des clés pour mieux comprendre la matière

    SciTech Connect

    2011-02-14

    Le LHC va-t-il bouleverser les théories de l'infiniment petit ? Les physiciens aimeraient que l'accélérateur fasse trembler le modèle standard. Cette théorie des particules élémentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expériences ont été conçus pour les éclairer.

  15. Explorer : des clés pour mieux comprendre la matière

    ScienceCinema

    None

    2011-10-06

    Le LHC va-t-il bouleverser les théories de l'infiniment petit ? Les physiciens aimeraient que l'accélérateur fasse trembler le modèle standard. Cette théorie des particules élémentaires et des forces laisse de nombreuses zones d'ombre. Le LHC et ses expériences ont été conçus pour les éclairer.

  16. Fenestrated and Chimney Technique for Juxtarenal Aortic Aneurysm: A Systematic Review and Pooled Data Analysis

    PubMed Central

    Li, Yue; Hu, Zhongzhou; Bai, Chujie; Liu, Jie; Zhang, Tao; Ge, Yangyang; Luan, Shaoliang; Guo, Wei

    2016-01-01

    Juxtarenal aortic aneurysms (JAA) account for approximately 15% of abdominal aortic aneurysms. Fenestrated endovascular aneurysm repair (FEVAR) and chimney endovascular aneurysm repair (CH-EVAR) are both effective methods to treat JAAs, but the comparative effectiveness of these treatment modalities is unclear. We searched the PubMed, Medline, Embase, and Cochrane databases to identify English language articles published between January 2005 and September 2013 on management of JAA with fenestrated and chimney techniques to conduct a systematic review to compare outcomes of patients with juxtarenal aortic aneurysm (JAA) treated with the two techniques. We compared nine F-EVAR cohort studies including 542 JAA patients and 8 CH-EVAR cohorts with 158 JAA patients regarding techniques success rates, 30-day mortality, late mortality, endoleak events and secondary intervention rates. The results of this systematic review indicate that both fenestrated and chimney techniques are attractive options for JAAs treatment with encouraging early and mid-term outcomes. PMID:26869488

  17. Aping our ancestors

    NASA Astrophysics Data System (ADS)

    Ennos, Roland

    2014-08-01

    Roland Ennos argues that the abilities of the great apes to cope in the dangerous mechanical environment of the forest canopy are part of the human species' intellectual inheritance and are intimately connected with our abilities as physicists.

  18. Extracted ion current density in close-coupling multi-antenna type radio frequency driven ion source: CC-MATIS

    SciTech Connect

    Oka, Y. E-mail: oka@LHD.nifs.ac.jp; Shoji, T.

    2014-02-15

    Positive ions are extracted by using a small extractor from the Close-Coupling Multi-Antenna Type radio frequency driven Ion Source. Two types of RF antenna are used. The maximum extracted ion current density reaches 0.106 A/cm{sup 2}. The RF net power efficiency of the extracted ion current density under standard condition is 11.6 mA/cm{sup 2}/kW. The efficiency corresponds to the level of previous beam experiments on elementary designs of multi-antenna sources, and also to the efficiency level of a plasma driven by a filament in the same chamber. The multi-antenna type RF plasma source is promising for all metal high density ion sources in a large volume chamber.

  19. Les conseils des cliniciens canadiens en matière de commotion dans le sport sont-ils cohérents?

    PubMed Central

    Carson, James D.; Rendely, Alexandra; Garel, Alisha; Meaney, Christopher; Stoller, Jacqueline; Kaicker, Jatin; Hayden, Leigh; Moineddin, Rahim; Frémont, Pierre

    2016-01-01

    Résumé Objectif Comparer les connaissances et l’utilisation des recommandations concernant la prise en charge de la commotion dans le sport (CDS) démontrées par les spécialistes de la médecine du sport et de l’exercice (SMSE) et les urgentologues afin d’évaluer la réussite du transfert des connaissances sur la CDS au Canada. Conception Un sondage à choix multiples envoyé par courriel et autoadministré par des SMSE et des urgentologues. La validité du contenu du sondage a fait l’objet d’une évaluation. Contexte Canada. Participants Le sondage a été complété entre mai et juillet 2012 par des SMSE qui ont réussi l’examen menant au diplôme de l’Académie canadienne de la médecine du sport et de l’exercice et des urgentologues qui n’avaient pas ce diplôme. Principaux paramètres à l’étude La connaissance et l’identification des sources d’information sur la prise en charge des commotions, l’utilisation des stratégies de diagnostic de la commotion et l’utilisation d’une terminologie courante et cohérente dans l’explication des stratégies de repos aux patients après une CDS. Résultats Le taux de réponse était de 28 % (305 sur 1085). Les taux de réponse par les SMSE et les urgentologues se situaient respectivement à 41 % (147 sur 360) et 22 % (158 sur 725). Parmi les répondants, 41 % des urgentologues et 3 % des SMSE n’étaient pas au courant de l’existence de déclarations consensuelles sur la commotion dans le sport; 74 % des SMSE utilisaient « habituellement ou toujours » la version 2 de l’Outil d’évaluation de la commotion dans le sport (SCAT2), tandis que 88 % des urgentologues n’utilisaient jamais le SCAT2. Aucune réponse uniforme n’a été documentée à la question visant à connaître les meilleurs modes de repos cognitif. Conclusion Nous avons cerné des différences et un manque d’uniformité chez les SMSE et les urgentologues dans la mise en application des recommandations concernant les patients ayant subi une CDS. Il semble que le SCAT2 soit davantage utilisé dans le milieu des SMSE que dans le contexte de l’urgence. Des efforts plus poussés de transfert des connaissances et en recherche devraient atténuer les obstacles à des conseils plus uniformes donnés par les médecins qui soignent des patients ayant subi une CDS.

  20. Sociological Support for the Job Placement of Students and Graduates of Higher Educational Institutions: The Experience of the Moscow Institute of Aviation and Technology (MATI)

    ERIC Educational Resources Information Center

    Bolotin, I. S.; Basalai, S. I.; Pugach, V. F.; Mikhailov, A. A.

    2013-01-01

    The weak connection between Russia's system of higher education and the labor market in Russia requires that greater attention be paid to preparing students for successful, employment. This will require more careful research into best practices, and the development of more effective links between employers and educational institutions.

  1. Une vie saine et active : des directives en matière d’activité physique chez les enfants et les adolescents

    PubMed Central

    Lipnowski, Stan; LeBlanc, Claire MA

    2012-01-01

    RÉSUMÉ L’épidémie d’obésité juvénile augmente partout dans le monde. Même si les facteurs de risque d’obésité sont multifactoriels, bon nombre sont liés au mode de vie et se prêtent à une intervention. Ces facteurs incluent le comportement sédentaire et la thermogenèse sans activité physique, de même que la fréquence, l’intensité, la quantité et le type d’activité physique. Les dispensateurs de soins de première ligne sont en position idéale pour surveiller le taux d’activité physique des enfants, des adolescents et de leur famille, évaluer les choix liés au mode de vie et offrir des conseils pertinents. Le présent document de principes contient des directives visant à réduire le comportement sédentaire et à accroître le taux d’activité physique au sein de la population pédiatrique. Des recommandations d’activités physiques adaptées au développement et visant les nourrissons, les tout-petits, les enfants d’âge préscolaire, les enfants et les adolescents sont présentées. Des stratégies de promotion d’une vie saine et active sur les scènes locale, municipale, provinciale, territoriale et fédérale sont proposées.

  2. VizieR Online Data Catalog: Circumstellar debris discs (Maldonado+, 2015)

    NASA Astrophysics Data System (ADS)

    Maldonado, J.; Eiroa, C.; Villaver, E.; Montesinos, B.; Mora, A.

    2015-09-01

    The high-resolution spectra used in this work come from several spectrographs and telescopes and have already been used in some of our previous works (Maldonado et al., 2010, Cat. J/A+A/521/A12, 2012, Cat. J/A+A/541/A40, 2013, Cat. J/A+A/554/A84; Martinez-Arnaiz et al., 2010, Cat. J/A+A/520/A79), which can be consulted for details concerning the observing runs and the reduction procedure. Summarising, the data were taken with the following instruments: i) FOCES at the 2.2-m telescope of the Calar Alto observatory (CAHA, Almeria, Spain); ii) SARG at the Telescopio Nazionale Galileo (TNG, 3.58m), La Palma (Canary Islands, Spain); iii) FIES at the Nordic Optical Telescope (NOT, 2.56m), La Palma; and iv) HERMES at the Mercator telescope (1.2m), also in La Palma. We used additional spectra from the public library "S4N" (Allende Prieto et al., 2004, Cat. J/A+A/420/183), which contains spectra taken with the 2d coude spectrograph at McDonald Observatory and the FEROS instrument at the ESO 1.52m telescope in La Silla; from the ESO/ST-ECF Science Archive Facility (http://archive.eso.org/cms/); and from the pipeline processed FEROS and HARPS data archive (http://archive.eso.org/wdb/wdb/eso/repro/form). (2 data files).

  3. Etude des connaissances, attitudes et pratiques en matière de réintégration sociale des femmes victimes de fistule obstétricale: région de l'Extrême-nord, Cameroun

    PubMed Central

    Martin, Sanou Sobze; Adogaye, Sali Ben Béchir; Rodrigue, Mabvouna Biguioh; Maurice, Douryang; Vivaldi, Teikeu Tessa Vladimir; Amede, Saah Fopa Michael; Marie, Ovaga Eyenga Landry; Meriam, Ausseil Sandra; Colizzi, Vittorio; Gianluca, Russo

    2015-01-01

    Introduction La fistule obstétricale est un orifice entre le vagin et la vessie ou le rectum, voire les deux. Ses impacts sont des conséquences anatomo-fonctionnelles et sociales. On estime à plus de 19 000 le nombre de femmes qui souffrent de fistule obstétricale au Cameroun. Méthodes Il s'agissait d'une étude transversale descriptive conduite dans trois districts de santé de la région de l'Extrême-nord. Vingt-huit femmes victimes de fistules obstétricales, quarante-deux membres de leur entourage et vingt-quatre agents de santé ont été interviewés entre Novembre et Décembre 2013. Trois types de questionnaires ont été utilisés. Les données ont été analysées dans Epi Info version 7.1.4.0. Les moyennes et les fréquences ont été calculées avec un intervalle de confiance à 95%. Résultats 46,4% des femmes victimes de fistule obstétricales interviewées avaient subi une intervention chirurgicale réparatrice parmi lesquelles, 61,5% bénéficiaient de la réintégration. Le fonds de commerce (62,5%) était l'aide la plus reçue. Vingt-deux membres de l'entourage savaient pourquoi on fait la réintégration. Selon eux, les considérations socioculturelles (68,2%), sont la principale barrière de la réintégration. D'après les agents de santé, le suivi psychosocial (58,3%) est la principale activité de la réintégration dans les centres de prise en charge de la fistule. Conclusion La prise en charge des fistules obstétricales au Cameroun souffre de manque de réintégration sociale. Ceci expliquerait en partie la persistance de cette pathologie. Un accent devrait être mis sur l'appui matériel, financier et sur le suivi psychosocial des femmes victimes de fistule obstétricale. PMID:26113915

  4. VizieR Online Data Catalog: Stellar activity and kinematics of FGK stars (Murgas+, 2013)

    NASA Astrophysics Data System (ADS)

    Murgas, F.; Jenkins, J. S.; Rojo, P.; Jones, H. R. A.; Pinfield, D. J.

    2013-02-01

    We present a compilation of stellar activity catalogs combined with galactic velocity information of 2529 F, G, and K stars. The stellar activity catalogs use in this work are: Jenkins et al. 2011 (Cat. J/A+A/531/A8); Gray et al. 2003 (Cat. J/AJ/126/2048), 2006 (Cat. J/AJ/132/161); Henry et al 1996 (Cat. J/A+A/111/439); Wright et al. 2004 (Cat. J/ApJS/152/261); Duncan et al. (1991ApJS...76..383D, Cat. III/159). The galactic velocities are taken from the Jenkins et al. 2011 (Cat. J/A+A/531/A8) and the Geneva-Copenhaguen Survey (GCS) Nordstrom et al. (2004A&A...418..989N, Cat. V/117). (1 data file).

  5. Study of Y and Lu iron garnets using Bethe-Peierls-Weiss method

    NASA Astrophysics Data System (ADS)

    Goveas, Neena; Mukhopadhyay, G.; Mukhopadhyay, P.

    1994-11-01

    We study here the magnetic properties of Y- and Lu- Iron Garnets using the Bethe- Peierls-Weiss method modified to suit complex systems like these Garnets. We consider these Garnets as described by Heisenberg Hamiltonian with two sublattices (a,d) and determine the exchange interaction parameters Jad, Jaa and Jdd by matching the exerimental susceptibility curves. We find Jaa and Jdd to be much smaller than those determined by Néel theory, and consistent with those obtained by the study of spin wave spectra; the spin wave dispersion relation constant obtained using these parameters gives good agreement with the experimental values.

  6. VizieR Online Data Catalog: SP_Ace derived data from stellar spectra (Boeche+, 2016)

    NASA Astrophysics Data System (ADS)

    Boeche, C.; Grebel, E. K.

    2015-11-01

    SP_Ace is a software designed to derive stellar parameters and elemental abundances from stellar spectra. In this tables we report the stellar parameters Teff, logg, [M/H], and chemical abundances [El/H] for ten elements derived with the software SP_Ace from spectra of the ELODIE spectral library (Prugniel et al., 2007, Cat. III/251), the benchmark stars (Jofre et al., 2014, Cat. J/A+A/564/A133), and the S4N library (Allende Prieto et al., 2004, Cat. J/A+A/420/183) degraded to spectral resolution R=12,000 and S/N=100. (3 data files).

  7. Multi-Mission Automated Task Invocation Subsystem

    NASA Technical Reports Server (NTRS)

    Cheng, Cecilia S.; Patel, Rajesh R.; Sayfi, Elias M.; Lee, Hyun H.

    2009-01-01

    Multi-Mission Automated Task Invocation Subsystem (MATIS) is software that establishes a distributed data-processing framework for automated generation of instrument data products from a spacecraft mission. Each mission may set up a set of MATIS servers for processing its data products. MATIS embodies lessons learned in experience with prior instrument- data-product-generation software. MATIS is an event-driven workflow manager that interprets project-specific, user-defined rules for managing processes. It executes programs in response to specific events under specific conditions according to the rules. Because requirements of different missions are too diverse to be satisfied by one program, MATIS accommodates plug-in programs. MATIS is flexible in that users can control such processing parameters as how many pipelines to run and on which computing machines to run them. MATIS has a fail-safe capability. At each step, MATIS captures and retains pertinent information needed to complete the step and start the next step. In the event of a restart, this information is retrieved so that processing can be resumed appropriately. At this writing, it is planned to develop a graphical user interface (GUI) for monitoring and controlling a product generation engine in MATIS. The GUI would enable users to schedule multiple processes and manage the data products produced in the processes. Although MATIS was initially designed for instrument data product generation,

  8. Foreword: Collision and reaction cell techniques in atomic mass spectrometry

    SciTech Connect

    Koppenaal, David W.; Eiden, Greg C.

    2004-01-01

    This contribution is a guest editorial statement and technical assessment for a special issue of the Royal Society of Chemistry journal entitled Journal of Analytical Atomic Spectrometry (JAAS). The editorial introduces the subject area of collision and reaction cells in atomic mass spectrometry, reviews current literature and commercial instrumentation trends, and previews four perspective and numerous research articles contained in the special journal issue.

  9. 77 FR 62182 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-12

    ... Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086, May 7, 2001... subsequent Amendments 21-82 and 21-83). Among other actions, SFAR 88 (66 FR 23086, May 7, 2001) requires...) has issued a regulation that is similar to SFAR 88 (66 FR 23086, May 7, 2001). (The JAA is...

  10. 78 FR 46298 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-31

    ... Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086, May 7, 2001... subsequent Amendments 21-82 and 21-83). Among other actions, SFAR 88 (66 FR 23086, May 7, 2001) requires...) has issued a regulation that is similar to SFAR 88 (66 FR 23086, May 7, 2001). (The JAA is...

  11. 77 FR 15644 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ... Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086, May 7, 2001... subsequent Amendments 21-82 and 21-83). Among other actions, SFAR 88 (66 FR 23086, May 7, 2001) requires...) has issued a regulation that is similar to SFAR 88 (66 FR 23086, May 7, 2001). (The JAA is...

  12. 77 FR 48427 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-14

    ... February 7, 2012 (77 FR 6023). That NPRM proposed to correct an unsafe condition for the specified products... FR 23086, May 7, 2001) and the equivalent JAA Internal Policy INT/POL/25/12, a safety analysis of... requested that we revise the compliance time for the actions required by paragraph (g) of the NPRM (77...

  13. VizieR Online Data Catalog: Catalogue of variable stars in open clusters (Zejda+, 2012)

    NASA Astrophysics Data System (ADS)

    Zejda, M.; Paunzen, E.; Baumann, B.; Mikulasek, Z.; Liska, J.

    2012-08-01

    The catalogue of variable stars in open clusters were prepared by cross-matching of Variable Stars Index (http://www.aavso.org/vsx) version Apr 29, 2012 (available online, Cat. B/vsx) against the version 3.1. catalogue of open clusters DAML02 (Dias et al. 2002A&A...389..871D, Cat. B/ocl) available on the website http://www.astro.iag.usp.br/~wilton. The open clusters were divided into two categories according to their size, where the limiting diameter was 60 arcmin. The list of all suspected variables and variable stars located within the fields of open clusters up to two times of given cluster radius were generated (Table 1). 8938 and 9127 variable stars are given in 461 "smaller" and 74 "larger" clusters, respectively. All found variable stars were matched against the PPMXL catalog of positions and proper motions within the ICRS (Roeser et al., 2010AJ....139.2440R, Cat. I/317). Proper motion data were included in our catalogue. Unfortunately, a homogeneous data set of mean cluster proper motions has not been available until now. Therefore we used the following sources (sorted alphabetically) to compile a new catalogue: Baumgardt et al. (2000, Cat. J/A+AS/146/251): based on the Hipparcos catalogue Beshenov & Loktin (2004A&AT...23..103B): based on the Tycho-2 catalogue Dias et al. (2001, Cat. J/A+A/376/441, 2002A&A...389..871D, Cat. B/ocl): based on the Tycho-2 catalogue Dias et al. (2006, Cat. J/A+A/446/949): based on the UCAC2 catalog (Zacharias et al., 2004AJ....127.3043Z, Cat. I/289) Frinchaboy & Majewski (2008, Cat. J/AJ/136/118): based on the Tycho-2 catalogue Kharchenko et al. (2005, J/A+A/438/1163): based on the ASCC2.5 catalogue (Kharchenko, 2001KFNT...17..409K, Cat. I/280) Krone-Martins et al. (2010, Cat. J/A+A/516/A3): based on the Bordeaux PM2000 proper motion catalogue (Ducourant et al., 2006A&A...448.1235D, Cat. I/300) Robichon et al. (1999, Cat. J/A+A/345/471): based on the Hipparcos catalogue van Leeuwen (2009A&A...497..209V): based on the new

  14. Legal Background of Aviation Medicine in Europe and its future development

    PubMed Central

    Siedenburg, J

    2008-01-01

    European aviation is moving into an exciting phase now, the administrative structure is changing. Aviation rules and aviation medicine will get a new structure as well. The nature of air traffic required an international scope in rulemaking – especially in such a confined continent as Europe with 41 countries, about 380 Million inhabitants and 317 billion person kilometres flown each year. For economic reasons it became necessary to develop common standards for certification of aircraft in the beginning of the 1970ies, maintenance followed later on. The Cyprus arrangement of 01 July 1990 created the JAA (Joint Aviation Authorities). Joint Aviation Requirements were drafted to replace existing national provisions and have been implemented from the end of the 1990ies. The areas of air operations and pilot licensing have been covered as well. The latter comprises of aviation medicine as well. The implementation of JAR-FCL 3, which covers the medical requirements for pilots, started from 1999 on in the several JAA member states. A detailed overview about development and structure of JAA, tools for harmonisation, rulemaking and amendment of requirements, medical standards, review procedures for contentious or marginal cases is described. Shortcomings were the fact that implementation was left to the discretion of the member states and that JAA had no executive power. This resulted in differences in safety and the EU commission concluded that aviation safety had to be regulated by the EU commission. After adoption of EU regulation 1592/2002 in 2002 common and binding requirements were to be drafted and a European aviation agency to be founded. EASA (European Aviation Safety Agency) started its work in September 2003. Finally it will take over the role of JAA completely. Whereas Certification and Maintenance were in the focus first, Flight Operations and Licensing are going to be covered as well in the near future. Essential Requirements have been drafted, outlining

  15. Évolution thermique des séries sédimentaires de la Marge ardéchoise : étude pétrographique de la matière organique et des argilesThermal evolution of the sedimentary series of the Ardèche Margin: petrological studies of organic matter and clays

    NASA Astrophysics Data System (ADS)

    Martinez, Luis; Duplay, Joëlle; Suarez-Ruiz, Isabel; Disnar, Jean Robert; Farjanel, Geneviève; Larqué, Philippe; Liewig, Nicole

    2002-11-01

    Two wells, Balazuc (BA1) and Morte-Mérie (MM1), located in a confined area (1200 m apart) and separated by the Uzer fault (a Liassic structure with a dip fault of 1300 m) were analysed using conventional methodologies and techniques (PRV, TAI, XRD, STEM) in order to compare the diagenetic evolution of clays and organic matter. The thermal convective process allows the circulation of hot fluids and the oxidation of organic matter. The conductive process allows the maturation of the organic matter, the expulsion of hydrocarbons and the deposit of pyrobitumes in the migration channels. To cite this article: L. Martinez et al., C. R. Geoscience 334 (2002) 1021-1028.

  16. Géodynamique et évolution thermique de la matière organique: exemple du bassin de Qasbat-Tadla, Maroc centralBasin geodynamics and thermal evolution of organic material: example from the Qasbat-Tadla Basin, central Morocco

    NASA Astrophysics Data System (ADS)

    Er-Raïoui, H.; Bouabdelli, M.; Bélayouni, H.; Chellai, H.

    2001-05-01

    Seismic data analysis of the Qasbat-Tadla Basin allows the deciphering of the main tectonic and sedimentary events that characterised the Hercynian orogen and its role in the basin's structural development. The global tectono-sedimentary framework involves structural evolution of an orogenic foreland basin and was the source of rising geotherms in an epizonal metamorphic environment. The complementary effects of these parameters has led to different source rock maturity levels, ranging from oil producing to graphite domains. Different maturity levels result from three distinct structural domains within the basin, each of which exhibit characteristic geodynamic features (tectonic contraints, rate of subsidence, etc.).

  17. VizieR Online Data Catalog: LAMOST DR2 star clusters candidate members (Zhang+, 2015)

    NASA Astrophysics Data System (ADS)

    Zhang, B.; Chen, X.-Y.; Liu, C.; Chen, L.; Deng, L.-C.; Hou, J.-L.; Shao, Z.-Y.; Yang, F.; Wu, Y.; Yang, M.; Zhang, Y.; Hou, Y.-H.; Wang, Y.-F.

    2015-11-01

    We adopt the Milky Way Star Cluster (MWSC) catalog (Kharchenko et al. 2012, Cat. J/A+A/543/A156; 2013, Cat. J/A+A/558/A53) as the list of target star clusters since it provides homogeneous parameters of Milky Way star clusters and is complete in the volume observed by LAMOST. Thus we use the MWSC radius parameters for star clusters, i.e., r0 in the MWSC is the angular radius of the core of the cluster, and r2 (hereafter rewritten as rc) stands for the angular radius of the cluster. A star cluster is covered by the LAMOST footprint if the number of stars located within 2rc of the cluster is larger than zero. In total, 457 star clusters, including open clusters, globular clusters, stellar associations and moving groups, are included in LAMOST DR2. (2 data files).

  18. VizieR Online Data Catalog: Radial velocities of HD 6434 (Hinkel+, 2015)

    NASA Astrophysics Data System (ADS)

    Hinkel, N. R.; Kane, S. R.; Pilyavsky, G.; Boyajian, T. S.; James, D. J.; Naef, D.; Fischer, D. A.; Udry, S.

    2016-04-01

    Previous radial velocity observations of HD6434 (Mayor et al. 2004, cat. J/A+A/415/391) were undertaken with the CORALIE spectrometer mounted on the 1.2m Euler Swiss telescope at La Silla. Those observations were conducted as part of the CORALIE exoplanet search program (Udry et al. 2000, cat. J/A+A/356/590). We continued to monitor HD6434 using CORALIE to improve the Keplerian orbital solution and provide an accurate transit ephemeris. The complete data set of 137 measurements is shown in Table2 including previously acquired measurements and 59 new measurements. These new measurements extend the overall time baseline for the radial velocity observations by a factor of ~3.6, for a total baseline of ~15 years. (1 data file).

  19. VizieR Online Data Catalog: Classification of emission-line gal. (Dessauges-Zavadsky 2000)

    NASA Astrophysics Data System (ADS)

    Dessauges-Zavadsky, M.; Pindao, M.; Maeder, A.; Kunth, D.

    2000-01-01

    The main goal of this work was to further investigate the classification of emission-line galaxies from the "Spectrophotometric Catalogue of HII galaxies" by Terlevich et al. (1991, Cat. J/A+AS/91/285) in a homogeneous and objective way, using the three line-ratio diagrams of Veilleux & Osterbrock (1987ApJS...63..295V). The re-measurements of the most important nebular lines and a revised classification are presented for 314 narrow-emission-line galaxies (represented by 405 spectra) from Terlevich's et al. (1991, Cat. J/A+AS/91/285) catalogue. The revised catalogue contains 267 HII galaxies, 25 Seyfert2 galaxies, 3 LINERs, 4 "revised" galaxies, 13 "transition" galaxies and 2 "ambiguous" galaxies. (1 data file).

  20. VizieR Online Data Catalog: Ages and masses of LMC clusters (de Grijs+, 2013)

    NASA Astrophysics Data System (ADS)

    de Grijs, R.; Goodwin, S. P.; Anders, P.

    2014-10-01

    We specifically focused on the catalogue of Glatt, Grebel & Koch (2010, Cat. J/A+A/571/A50), who compiled data of 1193 populous LMC clusters with ages of up to 1 Gyr based on the most up-to-date and comprehensive LMC object catalogue of Bica et al. (2008, Cat. J/MNRAS/389/678). Glatt et al. (2010, Cat. J/A+A/571/A50) used the optical broad-band photometry from the Magellanic Clouds Photometric Survey (MCPS; Zaritsky et al., 2004, Cat. J/AJ/128/1606) to construct colour-magnitude diagrams (CMDs) and subsequently determined ages for their entire sample based on isochrone fits. (1 data file).

  1. VizieR Online Data Catalog: Li abundances in F stars (Delgado+, 2015)

    NASA Astrophysics Data System (ADS)

    Delgado Mena, E.; Bertran de Lis, S.; Adibekyan, V. Z.; Sousa, S. G.; Figueira, P.; Mortier, A.; Gonzalez Hernandez, J. I.; Tsantaki, M.; Israelian, G.; Santos, N. C.

    2015-06-01

    Our baseline sample is 1111 FGK stars observed within the context of the HARPS GTO programs. It is a combination of three HARPS subsamples hereafter called HARPS-1 (Mayor et al., 2003Msngr.114...20M), HARPS-2 (Lo Curto et al., 2010, Cat. J/A+A/512/A48), and HARPS-4 (Santos et al., 2011, Cat. J/A+A/526/A112). The individual spectra of each star were reduced using the HARPS pipeline and then combined with IRAF2 after correcting for its radial velocity shift. The final spectra have a resolution of R~110000 and high signal-to-noise ratio (55% of the spectra have a S/N higher than 200). The total sample is composed of 135 stars with planets and 976 stars without detected planets. (4 data files).

  2. High-resolution mass-analyzed threshold ion spectrum of Argon obtained on beamline 9.0.2.2

    SciTech Connect

    Hsu, C.W.; Lu, K.T.; Evans, M.

    1997-04-01

    The first mass analyzed threshold ion (MATI) spectrum using dc electric fields and a continuous wave light source has been obtained on End Station 2 of the Chemical Dynamics Beamline (9.0.2.2) at the Advanced Light Source. MATI provides researchers with fundamental spectroscopic information about atomic and molecular ions with the added advantage of mass analysis. The MATI technique involves the detection of ions formed by field ionization of long-lived high-n Rydberg states approaching an ionization threshold. The MATI apparatus consists of a differentially pumped supersonic molecular beam source, a photoionization region followed by a series of electrostatic lenses, a quadrupole mass spectrometer, and a Daly-type detector. The MATI technique can be used to probe the Rydberg states approaching an ionization continuum and yield information about the lifetimes of these states. In addition, MATI could be used to obtain the spectrum of a single species present in a sample mixture due to the mass selective nature of the experiment. MATI could also be used to form mass selected and state specific ions for use in ion molecule reaction experiments.

  3. VizieR Online Data Catalog: Optical ident. and redshifts of Planck SZ sources (Planck+, 2016)

    NASA Astrophysics Data System (ADS)

    Planck Collaboration; Ade, P. A. R.; Aghanim, N.; Arnaud, M.; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Banday, A. J.; Barreiro, R. B.; Barrena, R.; Bartolo, N.; Battaner, E.; Benabed, K.; Benoit-Levy, A.; Bernard, J.-P.; Bersanelli, M.; Bielewicz, P.; Bikmaev, I.; Boehringer, H.; Bonaldi, A.; Bonavera, L.; Bond, J. R.; Borrill, J.; Bouchet, F. R.; Burenin, R.; Burigana, C.; Calabrese, E.; Cardoso, J.-F.; Catalano, A.; Chamballu, A.; Chary, R.-R.; Chiang, H. C.; Chon, G.; Christensen, P. R.; Clements, D. L.; Colombo, L. P. L.; Combet, C.; Comis, B.; Crill, B. P.; Curto, A.; Cuttaia, F.; Dahle, H.; Danese, L.; Davies, R. D.; Davis, R. J.; de Bernardis, P.; De Rosa, A.; de Zotti, G.; Delabrouille, J.; Diego, J. M.; Dole, H.; Donzelli, S.; Dore, O.; Douspis, M.; Dupac, X.; Efstathiou, G.; Elsner, F.; Ensslin, T. A.; Eriksen, H. K.; Ferragamo, A.; Finelli, F.; Forni, O.; Frailis, M.; Fraisse, A. A.; Franceschi, E.; Fromenteau, S.; Galeotta, S.; Galli, S.; Ganga, K.; Genova-Santos, R. T.; Giard, M.; Gjerlow, E.; Gonzalez-Nuevo, J.; Gorski, K. M.; Gruppuso, A.; Hansen, F. K.; Harrison, D. L.; Hempel, A.; Hernandez-Monteagudo, C.; Herranz, D.; Hildebrandt, S. R.; Hivon, E.; Hornstrup, A.; Hovest, W.; Huffenberger, K. M.; Hurier, G.; Jaffe, T. R.; Keihaenen, E.; Keskitalo, R.; Khamitov, I.; Kisner, T. S.; Kneissl, R.; Knoche, J.; Kunz, M.; Kurki-Suonio, H.; Lamarre, J.-M.; Lasenby, A.; Lattanzi, M.; Lawrence, C. R.; Leonardi, R.; Leon-Tavares, J.; Levrier, F.; Lietzen, H.; Liguori, M.; Lilje, P. B.; Linden-Vornle, M.; Lopez-Caniego, M.; Lubin, P. M.; Macias-Perez, J. F.; Maffei, B.; Maino, D.; Mandolesi, N.; Maris, M.; Martin, P. G.; Martinez-Gonzalez, E.; Masi, S.; Matarrese, S.; McGehee, P.; Melchiorri, A.; Mennella, A.; Migliaccio, M.; Miville-Deschenes, M.-A.; Moneti, A.; Montier, L.; Morgante, G.; Mortlock, D.; Munshi, D.; Murphy, J. A.; Naselsky, P.; Nati, F.; Natoli, P.; Novikov, D.; Novikov, I.; Oxborrow, C. A.; Pagano, L.; Pajot, F.; Paoletti, D.; Pasian, F.; Perdereau, O.; Pettorino, V.; Piacentini, F.; Piat, M.; Pierpaoli, E.; Plaszczynski, S.; Pointecouteau, E.; Polenta, G.; Pratt, G. W.; Prunet, S.; Puget, J.-L.; Rachen J. P.; Rebol, O. R.; Reinecke, M.; Remazeilles, M.; Renault, C.; Renzi, A.; Ristorcelli, I.; Rocha, G.; Rosset, C.; Rossetti, M.; Roudier, G.; Rubino-Martin, J. A.; Rusholme, B.; Sandri, M.; Santos, D.; Savelainen, M.; Savini, G.; Scott, D.; Stolyarov, V.; Streblyanska, A.; Sudiwala, R.; Sunyaev, R.; Suur-Uski, A.-S.; Sygnet, J.-F.; Tauber, J. A.; Terenzi, L.; Toffolatti, L.; Tomasi, M.; Tramonte, D.; Tristram, M.; Tucci, M.; Valenziano, L.; Valiviita, J.; van Tent, B.; Vielva, P.; Villa, F.; Wade, L. A.; Wandelt, B. D.; Wehus, I. K.; Yvon, D.; Zacchei, A.; Zonca, A.

    2016-04-01

    This article is a companion paper to the Planck catalogue of SZ sources (PSZ1) published in Planck Collaboration XXIX (2014, Cat. J/A+A/581/A14). It contains the results of approximately three years of observations with telescopes at the Canary Islands observatories (IAC80, NOT, INT, TNG, WHT, and GTC), as part of the general optical follow-up programme undertaken by the Planck Collaboration. (2 data files).

  4. Study of RE-garnets using BPW method

    NASA Astrophysics Data System (ADS)

    Goveas, Neena; Mukhopadhyay, P.; Mukhopadhyay, G.

    1995-02-01

    The magnetic susceptibility of rare-earth (Y and Lu) iron garnets is studied using a modified Bethe-Peierls-Weiss (BPW) approximation. The modifications enable us to incorporate the three exchange parameters Jad, Jaa and Jdd necessary to describe the systems. We get excellent fits to the experimental susceptibilities from which we determined the J-values. These also give excellent agreement with the spin wave dispersion relation constant D.

  5. VizieR Online Data Catalog: Properties of SCUBA cores in Perseus mol. cloud (Curtis+, 2010)

    NASA Astrophysics Data System (ADS)

    Curtis, E. I.; Richer, J. S.

    2013-05-01

    We extracted fully calibrated and reduced SCUBA 850um maps across the four regions in Perseus we observed with HARP from the data presented by Hatchell et al. (2005, Cat. J/A+A/440/151), where we refer the reader for details of the observations and processing. In short, the data were taken during 20 nights between 1999 and 2003. (2 data files).

  6. VizieR Online Data Catalog: 72 WINGS nearby clusters luminosity functions (Moretti+, 2015)

    NASA Astrophysics Data System (ADS)

    Moretti, A.; Bettoni, D.; Poggianti, B. M.; Fasano, G.; Varela, J.; D'Onofrio, M.; Vulcani, B.; Cava, A.; Fritz, J.; Couch, W. J.; Moles, M.; Kjaergaard, P.

    2015-11-01

    We used the Sextractor photometric catalogue of WINGS galaxies described in Varela et al. (2009A&A...497..667V, Cat. J/A+A/497/667), which refers to optical (B,V) photometry of 76 cluster of galaxies, either observed with the INT telescope at La Palma, or with the 2.2m ESO telescope at La Silla. (1 data file).

  7. VizieR Online Data Catalog: V352 CMa V-band differential light curve (Kajatkari+, 2015)

    NASA Astrophysics Data System (ADS)

    Kajatkari, P.; Jetsu, L.; Cole, E.; Hackman, T.; Henry, G. W.; Joutsiniemi, S.-L.; Lehtinen, J.; Makela, V.; Porceddu, S.; Ryynanen, K.; Solea, V.

    2015-05-01

    The included files present the numerical data of our analysis of the V352 CMa photometry. The data consists of differential Johnson V-band photometry using the star HD 43879 as the comparison star. The analysis has been performed using our previously published continuous period search (CPS) method, described in detail in Lehtinen et al., 2011A&A...527A.136L, Cat. J/A+A/527/A136. (2 data files).

  8. VizieR Online Data Catalog: LQ Hya V-band differential light curve (Lehtinen+, 2012)

    NASA Astrophysics Data System (ADS)

    Lehtinen, J.; Jetsu, L.; Hackman, T.; Kajatkari, P.; Henry, G. W.

    2012-05-01

    The included files present the numerical data of our analysis of the LQ Hya photometry. The data consists of differential Johnson V-band photometry using the star HD 82477 as the comparison star. The analysis has been performed using our previously published continuous period search (CPS) method, described in detail in Lehtinen et al., 2011. Cat. J/A+A/527/A136. (2 data files).

  9. VizieR Online Data Catalog: Interferometry of chemically peculiar stars (Shulyak+, 2014)

    NASA Astrophysics Data System (ADS)

    Shulyak, D.; Paladini, C.; Li Causi, G.; Perraut, K.; Kochukhov, O.

    2015-04-01

    In Table 2, we summarize the application of modern and planned interferometric facilities to a sample of CP stars. Majority of stars in this table are magnetic CP stars listed in Kochukhov & Bagnulo (2006A&A...450..763K, Cat. J/A+A/450/763) with four additional stars HD 37776, HD 72106, HD 103498, and HD 177410, and five presumably non-magnetic HgMn stars (shown at the end of the table). (1 data file).

  10. VizieR Online Data Catalog: σ Gem V-band differential light curve (Kajatkari+, 2014)

    NASA Astrophysics Data System (ADS)

    Kajatkari, P.; Hackman, T.; Jetsu, L.; Lehtinen, J.; Henry, G. W.

    2013-11-01

    The included files present the differential Johnson V-band photometry of the RS CVn star sigma Geminorum, using the star HR 2896 as the comparison star, and the numerical results of our analysis of the same photometry. The analysis has been performed using our previously published continuous period search (CPS) method, described in detail in Lehtinen et al., 2011, Cat. J/A+A/527/A136. (2 data files).

  11. VizieR Online Data Catalog: Star-forming regions deuteration (Gerner+, 2015)

    NASA Astrophysics Data System (ADS)

    Gerner, T.; Shirley, Y. L.; Beuther, H.; Semenov, D.; Linz, H.; Albertsson, T.; Henning, T.

    2015-10-01

    The sources were taken from Gerner et al. (2014, Cat. J/A+A/563/A97) and were initially selected from different source lists. The total sample contains 59 high-mass star-forming regions, consisting of 19 IRDCs and 20 HMPOs as well as 11 HMCs and 9 UCHIIs. The sources were selected from well-known source catalogs of the literature without specific selection criteria such as spherical symmetry. (3 data files).

  12. VizieR Online Data Catalog: Spectra of Abell 2384 galaxies (Pranger+, 2014)

    NASA Astrophysics Data System (ADS)

    Pranger, F.; Bohm, A.; Ferrari, C.; Maurogordato, S.; Benoist, C.; Holler, H.; Schindler, S.

    2014-09-01

    The complementary EFOSC2 spectra and redshifts used are taken from the paper entitled "Merging history of three bimodal clusters" (authored by S. Maurogordato, J. L. Sauvageot, H. Bourdin, A. Cappi, C. Benoist, C. Ferrari, G. Mars and K. Houairi, published as A&A 525, A79 (2011A&A...525A..79M), DOI: 10.1051/0004-6361/201014415) and already available at CDS as Cat. J/A+A/525/A79 (2 data files).

  13. VizieR Online Data Catalog: Herschel far-IR counterparts of SDSS galaxies (Dominguez+, 2014)

    NASA Astrophysics Data System (ADS)

    Dominguez Sanchez, H.; Bongiovanni, A.; Lara-Lopez, M. A.; Oteo, I.; Cepa, J.; Perez Garcia, A. M.; Sanchez-Portal, M.; Ederoclite, A.; Lutz, D.; Cresci, G.; Delvecchio, I.; Berta, S.; Magnelli, B.; Popesso, P.; Pozzi, F.; Riguccini, L.

    2015-01-01

    In this paper, we present results for galaxies from the SDSS-DR7, with a counterpart from the PEP (Lutz et al., 2011, Cat. J/A+A/532/A90) Herschel survey in two different fields: the COSMOS field (Scoville et al. 2007ApJS..172....1S) and the Lockman Hole (LH hereafter; Lockman, Jahoda & McCammon 1986ApJ...302..432L). (1 data file).

  14. VizieR Online Data Catalog: Kinematics of NGC 2768 from planetary nebulae (Forbes+, 2012)

    NASA Astrophysics Data System (ADS)

    Forbes, D. A.; Cortesi, A.; Pota, V.; Foster, C.; Romanowsky, A. J.; Merrifield, M. R.; Brodie, J. P.; Strader, J.; Coccato, L.; Napolitano, N.

    2013-04-01

    Velocity data for 315 PNe in NGC 2768 were acquired using the PN.S spectrograph (Douglas et al., 2002PASP..114.1234D) in 2007 and are available at www.strw.leidenuniv.nl/pns/ and in Cortesi et al., Cat. J/A+A/549/A115. The radial surface density distribution and velocity data for GCs come from the imaging and spectroscopy of Pota et al. (2013MNRAS.428..389P). (1 data file).

  15. VizieR Online Data Catalog: VRIJHK photometry of 3C 279 (Sandrinelli+, 2016)

    NASA Astrophysics Data System (ADS)

    Sandrinelli, A.; Covino, S.; Dotti, M.; Treves, A.

    2016-07-01

    The starting point of the present investigation is the VRIJHK photometric observations obtained with the robotic Rapid Eye Mounting telescope (REM) at La Silla, which are described in detail in Sandrinelli et al. 2014 (cat. J/A+A/562/A79). We add to the data available in the above mentioned paper the REM photometry of 3C 279 (see Table2), which is unpublished thus far. (2 data files).

  16. VizieR Online Data Catalog: Non-Fermi blazar sample (Xiong+, 2015)

    NASA Astrophysics Data System (ADS)

    Xiong, D.; Zhang, X.; Bai, J.; Zhang, H.

    2015-11-01

    The selection criteria for the sample were that we tried to select the largest group of blazars included in the multi-frequency catalogue of blazars (the Roma BZCAT; Massaro et al.. 2009, Cat. J/A+A/495/691) with reliable broad-line luminosity (used as a proxy for disc luminosity), redshift, black hole mass and jet kinetic power. The sample of FBs was directly from Xiong & Zhang (2014MNRAS.441.3375X). The νpeak and Lpeak of our FBs were collected from Finke (2013ApJ...763..134F) and Meyer et al. (2011, Cat. J/ApJ/740/98), and the νpeak and Lpeak of NFBs from Nieppola et al. (2006, Cat. J/A+A/445/441; 2008, Cat. J/A+A/488/867), Meyer et al. (2011, Cat. J/ApJ/740/98), Wu, Gu & Jiang (2009RAA.....9..168W) and Aatrokoski et al. (2011A&A...536A..15P). (1 data file).

  17. Molecular above-threshold-ionization angular distributions with attosecond bichromatic intense XUV laser pulses

    NASA Astrophysics Data System (ADS)

    Yuan, Kai-Jun; Bandrauk, André D.

    2012-01-01

    Angular distributions of molecular above-threshold ionization (MATI) in bichromatic attosecond extreme ultraviolet (XUV) linear polarization laser pulses have been theoretically investigated. Multiphoton ionization in a prealigned molecular ion H2+ produces clear MATI spectra which show a forward-backward asymmetry in angular and momentum distributions which is critically sensitive to the carrier envelope phase (CEP) φ, the time delay Δτ between the two laser pulses, and the photoelectron kinetic energies Ee. The features of the asymmetry in MATI angular distributions are described well by multiphoton perturbative ionization models. Phase differences of continuum electron wave functions can be extracted from the CEP φ and time delay Δτ dependent ionization asymmetry ratio created by interfering multiphoton ionization pathways. At large internuclear distances MATI angular distributions exhibit more complex features due to laser-induced electron diffraction where continuum electron wavelengths are less than the internuclear distance.

  18. VizieR Online Data Catalog: Milky Way global survey of star clusters (Kharchenko+, 2012)

    NASA Astrophysics Data System (ADS)

    Kharchenko, N. V.; Piskunov, A. E.; Roeser, S.; Schilbach, E.; Scholz, R.-D.

    2012-07-01

    An all-sky target list of 3784 entries with initial cluster parameters was compiled from sources available in the literature. As the primary source we used the data from the Catalogue of Open Cluster Data (COCD, Kharchenko et al. 2005a,b, Cat. J/A+A/438/1163, J/A+A/440/403). For further optical clusters the data were taken from the Dias et al. (2002, Cat. B/ocl) list (Version 3.1, 24/nov/2010). Known associations were retrieved from Melnik & Dambis (2009, Cat. J/MNRAS/400/518). For clusters detected in the NIR the information came from Bica et al. (2003b, Cat. J/A+A/404/223), Dutra et al. (2003, Cat. J/A+A/400/533), Froebrich et al. (2007, Cat. J/MNRAS/374/399). Globular clusters were selected from the catalogue by Harris (1996) (edition 2010, 2010arXiv1012.3224H). Additionally, we incorporated supplementary data on embedded clusters from Bica et al. (2003a, Cat. J/A+A/397/177), Lada & Lada (2003ARA&A..41...57L) and on stars in associations from Humphreys (1978, Cat. V/44). The basic stellar data were taken from the all-sky catalogue 2MAst (2Mass with Astrometry), that was extracted from the all-sky catalogues PPMXL (Roeser et al. 2010, Cat. I/317) and 2MASS (Cutri et al. 2003, Cat. II/246). Additionally, we incorporated data on radial velocities from Kharchenko et al. (2007, Cat. III/254) and spectral types from ASCC-2.5 (Kharchenko & Roeser 2009, Cat. I/280). Around each object from our target list we defined a circular area with a radius of ra=r2+radd where r2 is cluster radius, and radd=0.3°. In these areas we selected in 2MAst only those stars with flags Rflg (the 2nd triple of the flags in 2MASS) set to 1, 2, or 3 in each band, i.e. the stars with the best quality detections in photometric and astrometric data. There are 871 targets in the 2nd Galaxy quadrant, we confirmed 650 open clusters and/or associations. These 650 sky areas contain about 11.2 mln 2MAst stars with best quality detections in photometric and astrometric data. We selected 30387 most

  19. Metallomics - An Interdisciplinary and Evolving Field

    SciTech Connect

    Koppenaal, David W.; Hieftje, Gary M.

    2007-09-14

    In an editorial earlier this year (JAAS, 22, 111, 2007), we opined that metallomics, the study of metals in biological systems, would be an increasingly important topic in elemental analysis in general and for this journal in particular . This issue of the journal, co-edited by the two of us, is a second special issue covering the subject of Metallomics (the first issue was JAAS, 19/1, 2004). The present issue is comprised of technique, application, and perspective papers that address this emerging field of study and show how atomic spectrometry is contributing to the understanding of biological systems. The subjects covered range from metal binding in plants through investigations of metal and metalloids in samples of biological fluids to the study of food supplements and drug interactions in cells. The issue includes two Critical Reviews. Yuxi Gao and colleagues discuss advanced nuclear analytical techniques for the emerging field of metalloproteomics. While Laura Liermann and her colleagues consider how micro-organisms extract metals from minerals in the environment for utilization in metabolic processes. The content of some of these papers stretches the traditional boundaries and scope of this journal, as echoed by the reviewers of some of the papers. This discussion about scope requires perhaps further debate. However, it is our view that while the Journal must remain true to its core aims, it must also strive to accommodate and motivate a wider authorship and readership. Metallomics is a field that transcends biology and microbiology, biochemistry, clinical chemistry, environmental chemistry, geochemistry, and yes, atomic spectroscopy. If JAAS aspires to be a leading force in metallomics, the Journal must expand its horizons beyond traditional analytical spectroscopy per se. Accordingly, in this special issue you will find papers that have a heavy clinical emphasis, which speak to complementary (non-atomic) spectroscopic techniques, and that provide

  20. VizieR Online Data Catalog: Nuclear activity in isolated galaxies (Hernandez-Ibarra+, 2013)

    NASA Astrophysics Data System (ADS)

    Hernandez-Ibarra, F. J.; Dultzin, D.; Krongold, Y.; Del Olmo, A.; Perea, J.; Gonzalez, J.

    2014-07-01

    We used two samples of rigorously defined isolated galaxies: the photometric catalogue of isolated galaxies (CIG) by Karachentseva (1973, Cat. VII/82) and the northern isolated disc galaxies compiled by Varela et al. (2004, Cat. J/A+A/420/873). We examined all of the spectra looking if emission lines were present. Within the spectral range covered by the SDSS spectra, we searched for Hβ, [OIII] λ5007Å, [OI] λ6300Å, [NII] λλ6548, 6584Å, Hα and the two sulphur ([SII] λλ6717, 6731Å) lines. (2 data files).

  1. Mixed-Phase Icing Simulation and Testing at the Cox Icing Wind Tunnel

    NASA Technical Reports Server (NTRS)

    Al-Khalil, Kamel; Irani, Eddie; Miller, Dean

    2003-01-01

    A new capability was developed for indoor simulation of snow and mixed-phase icing conditions. This capability is useful for year-round testing in the Cox closed-loop Icing Wind Tunnel. Certification of aircraft for flight into these types of icing conditions is only required by the JAA in Europe. In an effort to harmonize certification requirements, the FAA in the US sponsored a preliminary program to study the effects of mixed-phase and fully glaciated icing conditions on the performance requirements of thermal ice protection systems. This paper describes the test program and the associated results.

  2. VizieR Online Data Catalog: CoMaLit. III. LC2 catalog (Sereno+, 2015)

    NASA Astrophysics Data System (ADS)

    Sereno, M.

    2015-11-01

    The worthiness of coherently compiled meta-catalogues of clusters has been discussed in Piffaretti et al. (2011A&A...534A.109P, Cat. J/A+A/534/A109), who collected a large catalogue of clusters of galaxies detected by X-rays based on publicly available samples. Specifically for the WL catalogues here presented, LC2-all provides a panorama of the state of the art on WL clusters. It gives an overview of the published, publicly available WL analyses. It is a repository of references and a ready-to-use collection of the main properties (coordinates, redshift and mass) of the observed clusters. (3 data files).

  3. VizieR Online Data Catalog: Parameters of HB stars in ω Cen (Moni Bidin+, 2012)

    NASA Astrophysics Data System (ADS)

    Moni Bidin, C.; Villanova, S.; Piotto, G.; Moehler, S.; Cassisi, S.; Momany, Y.

    2012-10-01

    Our observations targeted 115 HB stars in ω Cen, selected from the optical photometry of Bellini et al. (2009, Cat. J/A+A/493/959). The data were collected at the Paranal Observatory in service mode, with the FORS2 spectrograph mounted on the UT1 telescope, in 2006 from January to April. The temperatures, gravities, and surface helium abundances were derived fitting the Balmer and helium lines with synthetic model spectra. Reddening and mass were estimated from these parameters. (1 data file).

  4. VizieR Online Data Catalog: A low-luminosity type-1 QSO sample. III. (Tremou+, 2015)

    NASA Astrophysics Data System (ADS)

    Tremou, E.; Garcia-Marin, M.; Zuther, J.; Eckart, A.; Valencia-Schneider, M.; Vitale, M.; Shan, C.

    2015-11-01

    The optical spectroscopic analysis of the LLQSO sample is based on two sets of observations. The first data set is from the HES (Reimers et al., 1996A&AS..115..235R, Cat. J/A+AS/115/235), in which follow-up observations were carried out to confirm the type-1 character of the survey candidates spectroscopically. In addition to this, we have used data from the 6 Degree Field Galaxy survey (6dFGS), an optical spectroscopy public database (Jones et al., 2004MNRAS.355..747J, 2009MNRAS.399..683J, Cat. VII/259). (3 data files).

  5. Exchange stiffness of Ca-doped YIG

    NASA Astrophysics Data System (ADS)

    Avgin, I.; Huber, D. L.

    1994-05-01

    An effective medium theory for the zero-temperature exchange stiffness of uncompensated Ca-doped YIG is presented. The theory is based on the assumption that the effect of the Ca impurities is to produce strong, random ferromagnetic interactions between spins on the a and d sublattices. In the simplest version of the theory, a fraction, x, of the ad exchange integrals are large and positive, x being related to the Ca concentration. The stiffness is calculated as function of x for arbitrary perturbed ad exchange integral, Jxad. For Jxad≳(1/5)‖8Jaa+3Jdd‖, with Jaa and Jdd denoting the aa and dd exchange integrals, respectively, there is a critical concentration, Xc, such that when x≳Xc, the stiffness is complex. It is suggested that Xc delineates the region where there are significant departures from colinearity in the ground state of the Fe spins. Extension of the theory to a model where the Ca doping is assumed to generate Fe4+ ions on the tetrahedral sites is discussed. Possible experimental tests of the theory are mentioned.

  6. VizieR Online Data Catalog: Optically Bright extragalactic Radio Sources II (Petrov, 2013)

    NASA Astrophysics Data System (ADS)

    Petrov, L.

    2014-06-01

    The first VLBI (Very Long Baseline Interferometry) observing campaign in 2007 resulted in the detection of 398 targets with the European VLBI Network (EVN; Bourda et al., 2010, cat. J/A+A/520/A113). During the second observing campaign, a subset of 105 sources detected in the previous campaign was observed (Bourda et al., 2011, cat. J/A+A/526/A102). Their positions were derived by Petrov (2011, cat. J/AJ/142/105) and formed the OBRS-1 (Optically Bright extragalactic Radio Sources) catalog. The remaining sources were observed in the third campaign, called OBRS-2. During the OBRS-2 campaign, there were three observing sessions with 10 VLBA (Very Long Baseline Array) stations and 5-6 EVN stations from this list: EFLSBERG, MEDICINA, ONSALA60, YEBES40M, DSS63, HARTRAO, and NOTO. Observations were made on 2010 Mar 23 (session ID gc034a), on 2011 Nov 8 (gc034bcd), and on 2011 Mar 15 (gc034ef). The OBRS-2 catalog presents precise positions of the 295 extragalactic radio sources as well as median correlated flux densities at 8.4 and 2.2GHz at baseline lengths shorter than 900km and at baseline lengths longer than 5000km. (1 data file).

  7. VizieR Online Data Catalog: Galaxy properties in clusters. II. (Muriel+, 2014)

    NASA Astrophysics Data System (ADS)

    Muriel, H.; Coenda, V.

    2014-06-01

    In paper I (Coenda & Muriel, 2009A&A...504..347C, Cat. J/A+A/504/347), we selected an X-ray sample of 49 clusters of galaxies from Popesso et al. (2004A&A...423..449P, Cat. J/A+A/423/449, hereafter P04) in the redshift range 0.05

  8. VizieR Online Data Catalog: Milky Way global survey of star clusters. II. (Kharchenko+, 2013)

    NASA Astrophysics Data System (ADS)

    Kharchenko, N. V.; Piskunov, A. E.; Roeser, S.; Schilbach, E.; Scholz, R.-D.

    2013-11-01

    An all-sky target list of 3784 entries with initial cluster parameters was compiled from sources available in the literature. As the primary source we used the data from the Catalogue of Open Cluster Data (COCD, Kharchenko et al. 2005a,b, Cat. J/A+A/438/1163, J/A+A/440/403). For further optical clusters the data were taken from the Dias et al. (2002, Cat. B/ocl) list (Version 3.1, 24/nov/2010). Known associations were retrieved from Melnik & Dambis (2009, Cat. J/MNRAS/400/518). For clusters detected in the NIR the information came from Bica et al. (2003b, Cat. J/A+A/404/223), Dutra et al. (2003, Cat. J/A+A/400/533), Froebrich et al. (2007, Cat. J/MNRAS/374/399). Globular clusters were selected from the catalogue by Harris (1996, edition 2010, 2010arXiv1012.3224H). Additionally, we incorporated supplementary data on embedded clusters from Bica et al. (2003a, Cat. J/A+A/397/177), Lada & Lada (2003ARA&A..41...57L) and on stars in associations from Humphreys (1978, Cat. V/44). The basic stellar data were taken from the all-sky catalogue 2MAst (2Mass with Astrometry), that was extracted from the all-sky catalogues PPMXL (Roeser et al. 2010, Cat. I/317) and 2MASS (Cutri et al. 2003, Cat. II/246). Additionally, we incorporated data on radial velocities from Kharchenko et al. (2007, Cat. III/254) and spectral types from ASCC-2.5 (Kharchenko & Roeser 2009, Cat. I/280). Around each object from our target list we defined a circular area with a radius of ra=r2+radd where r2 is the cluster radius, and radd=0.3°. In these areas we selected in 2MAst only those stars with flags Rflg (the 2nd triple of the flags in 2MASS) set to 1, 2, or 3 in each band, i.e. the stars with the best quality detections in photometric and astrometric data. There are 3784 targets in our object list, we confirmed 3006 clusters and/or associations. These 3006 sky areas contain about 63.5 mln 2MAst stars with best quality detections in photometric and astrometric data. We selected about 0.14 mln most

  9. VizieR Online Data Catalog: MWSC IV. 63 new open clusters (Scholz+, 2015)

    NASA Astrophysics Data System (ADS)

    Scholz, R.-D.; Kharchenko, N. V.; Piskunov, A. E.; Roeser, S.; Schilbach, E.

    2015-08-01

    We first selected high-quality samples from the 2MAst and UCAC4 catalogues for comparison and verification of the proper motions. For 441 circular proper motion bins (radius 15mas/yr) within+/-50mas/yr, the sky outside a thin Galactic plane zone (|b|<5°) was binned in small areas ('sky pixels') of 0.25x0.25°2, Sky pixels with enhanced numbers of stars with a certain common proper motion in both catalogues were considered as cluster candidates. In total we discovered 692 density enhancements (regarded as cluster candidates). These candidates were cross-identified with known objects. Unidentified objects were passed through the standard MWSC pipeline (described in Kharchenko et al., 2012, Cat. J/A+A/543/A156) for verification, cluster membership construction and structure, kinematic and astrophysical parameter determination. The basic stellar data were taken from the all-sky catalogue 2MAst (2MASS with Astrometry), that was extracted from the all-sky catalogues PPMXL (Roeser et al. 2010, Cat.) and 2MASS (Cutri et al. 2003, Cat.). We found that 355 candidates coincide or overlap with known objects. From the remaining candidates, 270 could not be confirmed by the MWSC pipeline, whereas 63 were classified as real star clusters, for which we determined their basic cluster parameters. Around each confirmed object from our target list we defined a circular area with a radius of ra=r2+radd where r2 is an initial estimate of the cluster radius, and radd=0.3deg. In these areas we selected in 2MAst only those stars with flags Rflg (the 2nd triple of the flags in 2MASS) set to 1, 2, or 3 in each band, i.e. the stars with the best quality detections in photometric and astrometric data. The 63 sky areas with confirmed clusters contain about 0.49 mln 2MAst stars with best quality detections in photometric and astrometric data. We selected most probable members and determined - with a homogeneous method/pipeline - angular sizes of the main morphological parts

  10. Mobile opioid agonist treatment and public funding expands treatment for disenfranchised opioid-dependent individuals.

    PubMed

    Hall, Gerod; Neighbors, Charles J; Iheoma, Jude; Dauber, Sarah; Adams, Merribeth; Culleton, Robert; Muench, Fred; Borys, Suzanne; McDonald, Rebecca; Morgenstern, Jon

    2014-04-01

    The New Jersey Medication Assisted Treatment Initiative (NJ-MATI) sought to reduce barriers to treatment by providing free, opioid agonist treatment (OAT, methadone or buprenorphine) via mobile medication units (MMUs). To evaluate barriers to OAT, logistic regression was used to compare opioid dependent patients enrolled in NJ-MATI to those entering treatment at fixed-site methadone clinics or non-medication assisted treatment (non-MAT). Client demographic and clinical data were taken from an administrative database for licensed treatment providers. The MMUs enrolled a greater proportion of African-American, homeless, and uninsured individuals than the fixed-site methadone clinics. Compared to non-MAT and traditional methadone clients, NJ-MATI patients were more likely to be injection drug users and daily users but less likely to have a recent history of treatment. These observations suggest that the patient-centered policies associated with NJ-MATI increased treatment participation by high severity, socially disenfranchised patients who were not likely to receive OAT. PMID:24468235

  11. Dysfunctional HDL containing L159R apoA-I leads to exacerbation of atherosclerosis in hyperlipidemic mice

    Technology Transfer Automated Retrieval System (TEKTRAN)

    In this study, the effect of the mutation L159R apoA-I or apoA-IL159R (FIN) was assessed. apoA-IL159R (FIN) is associated with a dominant negative phenotype, displaying hypoalphaproteinemia and an increased risk for atherosclerosis in humans. Transgenic mice lines were created through strategic mati...

  12. The Development of a Psychometrically-Sound Instrument to Measure Teachers' Multidimensional Attitudes toward Inclusive Education

    ERIC Educational Resources Information Center

    Mahat, Marian

    2008-01-01

    The "Multidimensional Attitudes toward Inclusive Education Scale" (MATIES) was developed to effectively measure affective, cognitive and behavioural aspects of attitudes, within the realm of inclusive education that includes physical, social and curricular inclusion. Models within Item Response Theory and Classical Test Theory were used for…

  13. Update on Groupthink.

    ERIC Educational Resources Information Center

    Posner-Weber, Cheryl

    1987-01-01

    Discusses the definition and origin of the term "groupthink." Examines three studies on groupthink by John Courtright (1978), Matie Flowers (1977), and Philip Tetlock (1979). Concludes none of the three is superior to another but that it can be learned from all three that group decision making is fraught with danger. (ABL)

  14. VizieR Online Data Catalog: Herschel counterparts of SDC (Peretto+, 2016)

    NASA Astrophysics Data System (ADS)

    Peretto, N.; Lenfestey, C.; Fuller, G. A.; Traficante, A.; Molinari, S.; Thompson, M. A.; Ward-Thompson, D.

    2016-03-01

    The goal of this paper is to identify which of the clouds from the Spitzer Dark Cloud catalogue (Peretto & Fuller, 2009, Cat. J/A+A/505/405) are real, which are artefacts. For this we used Herschel Hi-GAL (Molinari et al., 2010PASP..122..314M) column density maps and search for spatial associations between Spitzer Dark Cloud and Herschel column density peaks. Description: This table provides some of the key properties of the Spitzer Dark Clouds that we estimated using the Herschel data and used to disentangle between real and spurious clouds. For each cloud of the Peretto & Fuller (2009, Cat. J/A+A/505/405) catalogue we give the cloud name, the cloud equivalent radius, the average Herschel column density within the boundaries of the SDCs, the average Herschel column density immediately outside the boundary of the SDCs, the Herschel column density noise at the position of the SDC, the Herschel column density peak within the boundaries of the SDCs, the value for criterion c1, the value for criterion c2, the value for criterion c3, and a tag that indicates if the cloud has been identified as real by our automated detection scheme based on the values of c1 and c2. This tag can take a number of values. These are: 'y' for yes; n for no; 'sat' for a SDC entirely located in a saturated portion of the Herschel images; 'ysat' for a cloud that is considered real despite being partially saturated; 'out' for a SDC that is not covered by Herschel images; 'yout' for a cloud that is considered real despite being partially covered by Herschel images; 'nout' for a cloud considered spurious despite being partially covered by Herschel images. Also, note that the column referring to the equivalent radius Req is the same quantity as the one quoted in Table 1 column 11 of Peretto & Fuller (2009, Cat. J/A+A/505/405). However, these latter values should be discarded since a mistake has been found in the calculation of the equivalent radius. Only the new values, the ones provided in Table 1

  15. Emergency medical kit for commercial airlines. Air Transport Medicine Committee, Aerospace Medical Association.

    PubMed

    Thibeault, C

    1998-11-01

    While it has been of general interest for a long time, the issue of a Medical Kit for Commercial Airlines is now close to the top of the priority list because of recent activities in Europe within the Joint Aviation Authorities (JAA) and in the United States at the Congressional Level. The Aerospace Medical Association (AsMA) requested its Air Transport Medicine Committee to review the situation and make recommendations for a basic medical kit for international airlines. After reviewing the contents of existing kits, and the limited amount of available data, a proposal was submitted to and accepted by the AsMA Council. This is just a beginning. The Air Transport Medicine Committee will continue to follow the evolution and periodically adapt the kit accordingly. PMID:9819172

  16. VizieR Online Data Catalog: Simulations of hot gas planets atmospheres (Salz+, 2016)

    NASA Astrophysics Data System (ADS)

    Salz, M.; Czesla, S.; Schneider, P. C.; Schmitt, J. H. M. M.

    2015-11-01

    The following tables contain the simulation results from the publication. Each table contains a 1D spherically symmetric, hydrodynamically escaping thermosphere of a hot gas planet. The atmospheres contain hydrogen and helium, and no molecules. The simulations were performed with the PLUTO-CLOUDY interface (Salz et al., Cat. J/A+A/576/A21). Each table contains a header, which specifies the system parameters, that where used for the simulations. The simulation region extends to 12/15 planetary radii, but the atmospheres are only approximately valid up to the Roche-lobe height, above which the spherical approximation is invalid. The Roche-lobe height is also given in the header. In the cases of WASP-10 b and WASP-8 b the atmospheres are hydrodynamically stable and the atmospheres extend only up to the exobase defined for proton-proton scattering as given in the publication. (17 data files).

  17. VizieR Online Data Catalog: Catalog of binary UV Ceti stars (Tamazian+, 2014)

    NASA Astrophysics Data System (ADS)

    Tamazian, V.; Malkov, O.

    2015-01-01

    A catalogue of nearby UV Ceti type flare stars in (137) visual binary systems is presented in the form of two separate tables of information. The catalogue has developed from Catalogue and Bibliography of UV Cet stars (Gershberg et al., 1999, Cat. J/A+AS/139/555) and the list of nearby flare stars (Pettersen, 1991MmSAI..62..217P) by including more recent and additional information from catalogues of binary stars (WDS, Mason et al., 2001-2014, Cat. B/wds; ORB6, Hartkopf et al. 2006-2014; DM3, Mason+ 2006-2014) and data from the Catalog of Nearby Stars, Preliminary 3rd Version (Gliese et al., 1991, Cat. V/70), from Hipparcos, the New Reduction (van Leeuwen 2007, Cat. I/311) and from SIMBAD. Some issues relating to the mass, luminosity and spectrum relations of flare stars are also discussed. (2 data files).

  18. VizieR Online Data Catalog: Multi-color photometry of star-forming galaxies (Ilbert+, 2013)

    NASA Astrophysics Data System (ADS)

    Ilbert, O.; McCracken, H. J.; Le Fevre, O.; Capak, P.; Dunlop, J.; Karim, A.; Renzini, M. A.; Caputi, K.; Boissier, S.; Arnouts, S.; Aussel, H.; Comparat, J.; Guo, Q.; Hudelot, P.; Kartaltepe, J.; Kneib, J. P.; Krogager, J. K.; Le Floc'h, E.; Lilly, S.; Mellier, Y.; Milvang-Jensen, B.; Moutard, T.; Onodera, M.; Richard, J.; Salvato, M.; Sanders, D. B.; Scoville, N.; Silverman, J. D.; Taniguchi, Y.; Tasca, L.; Thomas, R.; Toft, S.; Tresse, L.; Vergani, D.; Wolk, M.; Zirm, A.

    2013-07-01

    Our photometric catalogue comprises near-infrared data taken with the VIRCAM on the VISTA telescope as part of the UltraVISTA project and optical broad and intermediate-band data taken with the SUPRIME camera on Subaru in support of the COSMOS project (Capak et al. 2007, Cat. II/284). The near-infrared data we use here corresponds to the UltraVISTA DR1 data release fully described in McCracken et al. (2012, Cat. J/A+A/544/A156). The table contains photometric redshifts and physical parameters associated to the UltraVISTA catalogue. It contains all the 339384 sources detected on the YJHKs chi2 image (1.48deg2 after having removed the masked areas). We also include the multi-colour broad band photometry generated by H.J. McCracken (the full catalogue is available at http://terapix.iap.fr/article.php?id_article=844). (1 data file).

  19. VizieR Online Data Catalog: Star-forming complexes in the Galaxy (Russeil+, 2003)

    NASA Astrophysics Data System (ADS)

    Russeil, D.

    2002-11-01

    We have carried out a multiwavelength study of the plane of our Galaxy in order to establish a star-forming-complex catalogue which is as complete as possible. Features observed include Hα, H109α, CO, the radio continuum and absorption lines. For each complex we have determined the position, the systemic velocity, the kinematic distance and, when possible, the stellar distance and the corresponding uncertainties. All of these parameters were determined as homogeneously as possible, in particular all the stellar distances have been (re)calculated with the same calibration and the kinematic distances with the same mean Galactic rotation curve. Through the complexes with stellar distance determination, a rotation curve has been fitted. It is in good agreement with the one of Brand & Blitz (1993, Cat. <J/A+A/275/67>). (2 data files).

  20. VizieR Online Data Catalog: Line ratios in giant HII region H 1013 (Stasinska+, 2013)

    NASA Astrophysics Data System (ADS)

    Stasinska, G.; Morisset, C.; Simon-Diaz, S.; Bresolin, F.; Schaerer, D.; Brandl, B.

    2013-08-01

    Cedres & Cepa (2002, Cat. J/A+A/391/809) used CDD observations in several narrow-band filters to compile a catalogue of 338 HII regions in the inner parts of M 101 (NGC 5457), also providing information about their fluxes, extinctions, equivalent widths, spatial distribution, excitations, radiation hardness, ionization parameters and metallicities. H1013 is identified as the HII region number 299 in their catalogue. We use the Hα and Hβ continuum-subtracted images (kindly provided by B. Cedres) in our study. These images were obtained at the Nordic Optical Telescope with the ALFOSC instrument in direct imaging mode (spatial resolution of 0.189-arcsec/pix). (1 data file).

  1. VizieR Online Data Catalog: Abundances in PNe. III: Se and Kr (Sterling+, 2015)

    NASA Astrophysics Data System (ADS)

    Sterling, N. C.; Porter, R. L.; Dinerstein, H. L.

    2015-08-01

    We have selected 15 PNe that exhibit emission lines from multiple Kr ions in their optical and near-infrared spectra (Table 1). Ten of these objects were modeled in Paper I (Sterling et al., 2007ApJS..169...37S). We draw the other objects from optical spectra published since Paper I (Sharpee et al. 2007, J/ApJ/659/1265; Garcia-Rojas et al. 2012, J/A+A/538/A54), with the exception of NGC 5315 (Peimbert et al. 2004ApJS..150..431P). Intensities for the K-band emission lines from Paper II (Sterling+, 2008ApJS..174..158S) were determined using the extinction coefficients listed in Table 1 and the extinction law adopted by the optical data reference. See section 3 for the complete explanation. (6 data files).

  2. VizieR Online Data Catalog: Kepler planet host candidates imaging (Lillo-Box+, 2014)

    NASA Astrophysics Data System (ADS)

    Lillo-Box, J.; Barrado, D.; Bouy, H.

    2014-09-01

    We applied the lucky imaging technique to the selected targets to achieve diffraction-limited resolution. We used the AstraLux North instrument located at the 2.2m telescope at the Calar Alto Observatory (Almeria, Spain). The targets were observed along three visibility windows of the Kepler field during 2011, 2012, and 2013. The results regarding the non-isolated KOIs of observations on 2011 were published in Lillo-Box et al. (2012A&A...546A..10L, Cat. J/A+A/546/A10). In the present work, we report the results concerning the isolated candidates observed in 2011 and the new results for the 2012-2013 observing runs. (6 data files).

  3. VizieR Online Data Catalog: HK photometry in an UCHII region near Sh2-217 (Brand+, 2011)

    NASA Astrophysics Data System (ADS)

    Brand, J.; Massi, F.; Zavagno, A.; Deharveng, L.; Lefloch, B.

    2010-11-01

    Coordinates and photometric parameters (magnitudes and colours) are presented of the stars located in a molecular condensation on the SW-border of the Galactic HII region Sh2-217. The data were obtained on January 4, 2004 with the 3.58-m Telescopio Nazionale Galileo (TNG; La Palma, Canary Islands, Spain). Near-infrared observations were carried out through H and K' broad-band filters with the camera NICS. The image scale is 0.25arcsec/pixel, yielding a field of view of about 4.2'x4.2'. Observing strategy and exposure times are described in Deharveng et al. (2006A&A...458..191D), the only difference being that the dithering sequence for the H-band images was the same as adopted for K'. The data reduction steps adopted are outlined in Deharveng et al. (2006A&A...458..191D). Aperture photometry was done using the DAOPHOT package in IRAF. We followed the same procedure described in Deharveng et al. (2006A&A...458..191D) to obtain aperture photometry, after which PSF-fitting photometry was performed. Although the seeing was good (<1"), the night was barely photometric, so we calibrated our H, K' photometry with that performed on the same field by Deharveng et al. (2003, Cat. J/A+A/399/1135). We calculated the difference in magnitudes for each coinciding source and plotted it against our derived instrumental H-K'. A colour term was present in K' because of the difference between the K and K' filters. After a best-fit calibration, a residual r.m.s. of about 0.2mag. was present in the difference between our photometry and that of Deharveng et al. (2003, J/A+A/399/1135), probably because of the different seeing and possibly also due to the intrinsic variability of young stars. Our photometry is thus on the same HK standard system as Deharveng et al. (2003, J/A+A/399/1135). Sources with K, H < 11-12 are in the non-linear regime or saturated, but such bright objects are few in number and lie outside the cluster, and are probably foreground stars. The approximate limiting

  4. VizieR Online Data Catalog: Spectroscopy of Coma early-type galaxies (Corsini+, 2008)

    NASA Astrophysics Data System (ADS)

    Corsini, E. M.; Wegner, G.; Saglia, R. P.; Thomas, J.; Bender, R.; Thomas, D.

    2009-09-01

    The sample of E and S0 galaxies of the Coma Cluster is presented in the first paper of the series (Mehlert et al., 2000, Cat. J/A+AS/141/449). Long-slit spectroscopic data of the sample galaxies were obtained with the 9.2m Hobby-Eberly Telescope (HET) at McDonald Observatory, Texas, and with the 2.4m Hiltner telescope of the MDM Observatory at Kitt Peak, Arizona, during different runs between 2002 and 2005. The galaxies GMP 0756, GMP 1176, GMP 1990, and GMP2440 were observed with Wide Field Planetary Camera 2 (WFPC2) on board the HST on 2007 April 18-24. (4 data files).

  5. VizieR Online Data Catalog: X-ray bright AGN in massive galaxy clusters (Ehlert+, 2015)

    NASA Astrophysics Data System (ADS)

    Ehlert, S.; Allen, S. W.; Brandt, W. N.; Canning, R. E. A.; Luo, B.; Mantz, A.; Morris, R. G.; von der Linden, A.; Xue, Y. Q.

    2015-06-01

    The clusters included in our study have been drawn from wide-area cluster surveys derived from the ROSAT All Sky Survey (Truemper, 1993Sci...260.1769T, See Cat. IX/29): the ROSAT Brightest Cluster Sample (BCS; Ebeling et al., 1998, Cat. J/MNRAS/301/881); the ROSAT-ESO Flux-Limited X-ray Sample (REFLEX; Bohringer et al., 2004, Cat. J/A+A/425/367); and the Massive Cluster Survey (MACS; Ebeling et al., 2007ApJ...661L..13T, 2010MNRAS.407...83E). We also included clusters from the 400deg2 ROSAT PSPC Galaxy Cluster Survey (Burenin et al., 2007, Cat. J/ApJS/172/561). (1 data file).

  6. VizieR Online Data Catalog: Radio properties of brightest cluster galaxies (Hogan+, 2015)

    NASA Astrophysics Data System (ADS)

    Hogan, M. T.; Edge, A. C.; Hlavacek-Larrondo, J.; Grainge, K. J. B.; Hamer, S. L.; Mahony, E. K.; Russell, H. R.; Fabian, A. C.; McNamara, B. R.; Wilman, R. J.

    2016-02-01

    Our parent sample is drawn from three ROSAT X-ray selected cluster catalogues - the Brightest Cluster Sample (BCS; Ebeling et al., 1998, Cat. J/MNRAS/301/881), the extended BCS (eBCS; Ebeling et al., 2000, Cat. J/MNRAS/318/333) and ROSAT-ESO Flux Limited X-ray (REFLEX; Bohringer et al., 2004, Cat. J/A+A/425/367) samples, which contain 206, 107 and 447 clusters, respectively. Since publication some catalogue entries have been reclassified, and there are also a small number of cross-catalogue duplicates. We therefore remove a minority of sources, leaving us with a sample of 199, 104 and 417 sources in the BCS, eBCS and REFLEX samples, respectively. Our total X-ray selected parent sample therefore consists of 720 clusters. (3 data files).

  7. VizieR Online Data Catalog: INTEGRAL/IBIS AGN catalogue (Malizia+, 2012)

    NASA Astrophysics Data System (ADS)

    Malizia, A.; Bassani, L.; Bazzano, A.; Bird, A. J.; Masetti, N.; Panessa, F.; Stephen, J. B.; Ubertini, P.

    2013-04-01

    In the fourth INTEGRAL/IBIS survey (Bird et al. 2010, Cat. J/ApJS/186/1), there are 234 objects which have been identified with AGN. To this set of sources, we have then added 38 galaxies listed in the INTEGRAL all-sky survey by Krivonos et al. (2007, Cat. J/A+A/475/775) updated on the website (http://hea.iki.rssi.ru/integral/survey/catalog.php) but not included in the Bird et al. catalogue due to the different sky coverage (see source names in bold in Appendix Appendix). The final data set presented and discussed in this work therefore comprises 272 AGN (last updated in 2011 March), which represents the most complete view of the INTEGRAL extragalactic sky to date. (2 data files).

  8. Investigation of Dynamic Flight Maneuvers With an Iced Tailplane

    NASA Technical Reports Server (NTRS)

    VanZante, Judith Foss; Ratvasky, Thomas P.

    1999-01-01

    A detailed analysis of two of the dynamic maneuvers, the pushover and elevator doublet, from the NASA/FAA Tailplane Icing Program are discussed. For this series of flight tests, artificial ice shapes were attached to the leading edge of the horizontal stabilizer of the NASA Lewis Research Center icing aircraft, a DHC-6 Twin Otter. The purpose of these tests was to learn more about ice-contaminated tailplane stall (ICTS), the known cause of 16 accidents resulting in 139 fatalities. The pushover has been employed by the FAA, JAA and Transport Canada for tailplane icing certification. This research analyzes the pushover and reports on the maneuver performance degradation due to ice shape severity and flap deflection. A repeatability analysis suggests tolerances for meeting the required targets of the maneuver. A second maneuver, the elevator doublet, is also studied.

  9. Introduction and summary of principal conclusions of the Second European Workshop in Aviation Cardiology.

    PubMed

    Joy, M

    1999-04-01

    Aviation is the only system of mass transportation regulated by international statute. The responsible agency is the International Civil Aviation Organization (ICAO), a safety directorate of the United Nations Organization. In 1995 almost 1-3 billion passengers were carried by the airlines of the world, the previous decade having seen a 50% growth in the number of passengers and the amount of freight carried. The total complement of professional pilots world-wide is approximately 455,000, although a significantly greater number of licence holders are involved in private or recreational flying. Approximately 11,500 large commercial transport aircraft are in service. All nations are signatories to the Chicago Convention of 1944, which, with its Annexes, forms the legal basis for an international agreement on aviation safety. Chapter six of Annex I contains the 'International Standards and Recommended Practices' (ISARPs) for the medical licensing of personnel which have been adopted and revised from time to time by the ICAO. The standards are interpreted by the relevant chapter in the Manual of Civil Aviation Medicine, first published in 1974 and last revised 18 years ago. Its status is only advisory, and it is currently being rewritten. As a part of the European harmonization process, the Joint Airworthiness Authorities directorate (now the Joint Aviation Authorities (JAA)) was set up as a supranational European body to agree explicit standards for the 29 signatory nations, and to regulate all aspects of certification. The new medical standard, which is complementary to that of the ICAO, is due to be promulgated in July 1999 whilst the cardiological standard, which has already undergone comprehensive revision, has yet to be agreed. Hafner has reviewed the JAA process in this supplement. PMID:11543488

  10. VizieR Online Data Catalog: Star clusters distances and extinctions. II. (Buckner+, 2014)

    NASA Astrophysics Data System (ADS)

    Buckner, A. S. M.; Froebrich, D.

    2015-04-01

    Until now, it has been impossible to observationally measure how star cluster scaleheight evolves beyond 1Gyr as only small samples have been available. Here, we establish a novel method to determine the scaleheight of a cluster sample using modelled distributions and Kolmogorov-Smirnov tests. This allows us to determine the scaleheight with a 25% accuracy for samples of 38 clusters or more. We apply our method to investigate the temporal evolution of cluster scaleheight, using homogeneously selected sub-samples of Kharchenko et al. (MWSC, 2012, Cat. J/A+A/543/A156, 2013, J/A+A/558/A53 ), Dias et al. (DAML02, 2002A&A...389..871D, Cat. B/ocl), WEBDA, and Froebrich et al. (FSR, 2007MNRAS.374..399F, Cat. J/MNRAS/374/399). We identify a linear relationship between scaleheight and log(age/yr) of clusters, considerably different from field stars. The scaleheight increases from about 40pc at 1Myr to 75pc at 1Gyr, most likely due to internal evolution and external scattering events. After 1Gyr, there is a marked change of the behaviour, with the scaleheight linearly increasing with log(age/yr) to about 550pc at 3.5Gyr. The most likely interpretation is that the surviving clusters are only observable because they have been scattered away from the mid-plane in their past. A detailed understanding of this observational evidence can only be achieved with numerical simulations of the evolution of cluster samples in the Galactic disc. Furthermore, we find a weak trend of an age-independent increase in scaleheight with Galactocentric distance. There are no significant temporal or spatial variations of the cluster distribution zero-point. We determine the Sun's vertical displacement from the Galactic plane as Z⊙=18.5+/-1.2pc. (1 data file).

  11. VizieR Online Data Catalog: Data-analysis project PSRSALSA (Weltevrede, 2016)

    NASA Astrophysics Data System (ADS)

    Weltevrede, P.

    2016-03-01

    PSRSALSA - A Suite of ALgorithms for Statistical Analysis of pulsar data - code. The functionality of the PSRSALSA package includes the following: - Tools to analyse periodic subpulse modulation in various ways (Weltevrede et al., 2006A&A...445..243W, Cat. J/A+A/445/243, 2007A&A...469..607W, Cat. J/A+A/469/607, 2012MNRAS.424..843W; Serylak et al., 2009A&A...506..865S). - A tool to fit the rotating vector model (RVM; Radhakrishnan & Cooke, 1969AstL....3..225R) to the polarization position angle curve of pulsars to derive viewing geometries (Rookyard et al., 2015MNRAS.446.3367R). - Tools to analyse and fit the observed flux-distribution of individual pulses, including the possibility to remove the effect of the noise distribution during the fitting process (e.g. Weltevrede et al., 2006A&A...458..269W). - Plotting tools for various types of data, visualised in various different ways, either from the command line or interactively. - Functionality to do various standard data processing operations, including de-dispersion, averaging, rebinning, rotating data in pulse phase and removing the average noise level (baseline) in various ways. There is functionality to flag and remove frequency channels and subintegrations from a data set. - Support of the PSRFITS (Hotan et al., 2004PASA...21..302H), SIGPROC3 (Lorimer, Astrophysics Source Code Library, http://ascl.net/1107.016), EPN (Lorimer et al., 1998A&AS..128..541L), and ASCII data formats. (2 data files).

  12. High Rydberg states of DABCO: Spectroscopy, ionization potential, and comparison with mass analyzed threshold ionization

    NASA Astrophysics Data System (ADS)

    Boogaarts, Maarten G. H.; Holleman, Iwan; Jongma, Rienk T.; Parker, David H.; Meijer, Gerard; Even, Uzi

    1996-03-01

    Doubly-resonant excitation/vibrational autoionization is used to accurately determine the ionization potential (IP) of the highly symmetric caged amine 1,4 diazabicyclo[2,2,2]octane (DABCO). The IP of DABCO excited with one quantum of the ν24(e') vibration lies at (59 048.62±0.03) cm-1, based on fitting 56 components of the npxy Rydberg series (δ=0.406±0.002) to the Rydberg formula. Rydberg state transition energies and linewidths are determined using standard calibration and linefitting techniques. The IP determined from Rydberg state extrapolation is compared with that determined by mass analyzed threshold ionization (MATI). Effects of static electric fields on MATI signals measured for the high Rydberg states are discussed.

  13. Microscale Enhancement of Heat and Mass Transfer for Hydrogen Energy Storage

    SciTech Connect

    Drost, Kevin; Jovanovic, Goran; Paul, Brian

    2015-09-30

    The document summarized the technical progress associated with OSU’s involvement in the Hydrogen Storage Engineering Center of Excellence. OSU focused on the development of microscale enhancement technologies for improving heat and mass transfer in automotive hydrogen storage systems. OSU’s key contributions included the development of an extremely compact microchannel combustion system for discharging hydrogen storage systems and a thermal management system for adsorption based hydrogen storage using microchannel cooling (the Modular Adsorption Tank Insert or MATI).

  14. Mass-analyzed threshold ionization spectroscopy of p-methylphenol and p-ethylphenol cations and the alkyl substitution effect

    NASA Astrophysics Data System (ADS)

    Lin, Jung Lee; Li, Changyong; Tzeng, Wen Bih

    2004-06-01

    The mass-analyzed threshold ionization (MATI) spectra of p-methylphenol and p-ethylphenol have been recorded by ionizing via various vibronic levels. The adiabatic ionization energies (IEs) of p-methylphenol and p-ethylphenol are determined to be 65918±5 and 65628±5 cm-1, which are less than that of phenol by 2707 and 2997 cm-1, respectively. This redshift indicates that the interaction between the alkyl group and the ring of alkylphenols in the cationic D0 state is greater than that in the neutral S0 state. Moreover, a longer alkyl group gives rise to a greater redshift in the IE. Analysis of the MATI spectra shows that most of the active modes are related to the in-plane ring vibrations of these two cations. However, the length of the alkyl group has an insignificant effect on the frequency of the observed ring vibrations. No band with frequency less than 350 cm-1 is observed for the p-methylphenol cation. In contrast, many low-frequency bands resulting from the characteristic motions (e.g., the C-C2H5 torsion and C-C2H5 and C-OH bending vibrations) appear in the MATI spectra of p-ethylphenol. The present results show that the ethyl group enhances the substituent-sensitive and many large-amplitude vibrations of the cation.

  15. Ethnopedology and soil quality of bamboo (Bambusa sp.) based agroforestry system.

    PubMed

    Arun Jyoti, Nath; Lal, Rattan; Das, Ashesh Kumar

    2015-07-15

    It is widely recognized that farmers' hold important knowledge of folk soil classification for agricultural land for its uses, yet little has been studied for traditional agroforestry systems. This article explores the ethnopedology of bamboo (Bambusa sp.) based agroforestry system in North East India, and establishes the relationship of soil quality index (SQI) with bamboo productivity. The study revealed four basic folk soil (mati) types: kalo (black soil), lal (red soil), pathal (stony soil) and balu (sandy soil). Of these, lal mati soil was the most predominant soil type (~ 40%) in bamboo-based agroforestry system. Soil physio-chemical parameters were studied to validate the farmers' soil hierarchal classification and also to correlate with productivity of the bamboo stand. Farmers' hierarchal folk soil classification was consistent with the laboratory scientific analysis. Culm production (i.e. measure of productivity of bamboo) was the highest (27culmsclump(-1)) in kalo mati (black soil) and the lowest (19culmsclump(-1)) in balu mati (sandy soil). Linear correlation of individual soil quality parameter with bamboo productivity explained 16 to 49% of the variability. A multiple correlation of the best fitted linear soil quality parameter (soil organic carbon or SOC, water holding capacity or WHC, total nitrogen) with productivity improved explanatory power to 53%. Development of SQI from ten relevant soil quality parameters and its correlation with bamboo productivity explained the 64% of the variation and therefore, suggest SQI as the best determinant of bamboo yield. Data presented indicate that the kalo mati (black soil) is sustainable or sustainable with high input. However, the other three folk soil types (red, stony and sandy soil) are also sustainable but for other land uses. Therefore, ethnopedological studies may move beyond routine laboratory analysis and incorporate SQI for assessing the sustainability of land uses managed by the farmers'. Additional

  16. The PI3K signaling-mediated nitric oxide contributes to cardiovascular effects of angiotensin-(1-7) in the nucleus tractus solitarii of rats.

    PubMed

    Wu, Zhao-Tang; Ren, Chang-Zhen; Yang, Ya-Hong; Zhang, Ru-Wen; Sun, Jia-Cen; Wang, Yang-Kai; Su, Ding-Feng; Wang, Wei-Zhong

    2016-01-30

    Angiotensin-1-7 [Ang-(1-7)], acting via the Mas receptor in the central nervous system, is involved in the regulation of cardiovascular activity. Nitric oxide (NO) is implicated as an important modulator in the nucleus tractus solitarii (NTS), a key region involved in control of cardiovascular activity. The aim of the present study was to determine the role of phosphatidylinositol 3-kinase (PI3K) signaling in mediating the effect of Ang-(1-7) on NO generation in the NTS. In Sprague-Dawley rats, acute injection of Ang-(1-7) into the NTS significantly increased NO generation and neuronal/endothelial NO synthase (n/eNOS) activity, which were abolished by the selective Mas receptor antagonist d-Alanine-[Ang-(1-7)] (A-779), the PI3K inhibitor LY294002, or the Akt inhibitor triciribine (TCN). Western blotting analysis further demonstrated that Ang-(1-7) significantly increased levels of Akt/NOS phosphorylation in the NTS, and Ang-(1-7)-induced e/nNOS phosphorylation was antagonized by LY294002 or TCN. Furthermore, gene knockdown of PI3K by lentivirus containing small hairpin RNA in the NTS prevented the Ang-(1-7)-induced increases in NOS/Akt phosphorylation and NO production. The physiological (in vivo) experiments showed that pretreatment with the NOS inhibitor l-NAME, LY294002, or TCN abolished the decreases in blood pressure, heart rate, and renal sympathetic nerve activity induced by Ang-(1-7) injected into the NTS. Our findings suggest that nitric oxide release meditated by the Mas-PI3K-NOS signaling pathway is involved in the cardiovascular effects of Ang-(1-7) in the NTS. PMID:26686278

  17. Standardless determination of Nd and Sr isotope ratios in geological samples using LA-MC-ICP-MS with a low-oxide molecular yield interface setup

    NASA Astrophysics Data System (ADS)

    Kimura, J.; Chang, Q.; Takahashi, T.; Kawabata, H.

    2013-12-01

    Sr/86Sr ratios was, therefore, available using the shift in the simultaneously measured 84Sr/86Sr from the natural ratio. The novel interface setup improved reproducibility of Nd isotope ratios by a factor of four and the new baseline correction technique along with the interface setup improved reproducibility of Sr isotope ratios by a factor of four providing a basis for accurate Sr and Nd isotope analyses using LA-MC-ICP-MS. REFERENCES Sr isotope: Kimura J.-I. et al. (2013a) JAAS. 28, 945-957, DOI:10.1039/C3JA30329B. Nd isotope: Kimura J.-I. et al. (2013b) JAAS. DOI:10.1039/C3JA50109D. Element fractionation in ICP: Kimura J.-I. et al. (2012) JAAS 27, 1549-1559, DOI: 10.1039/c2ja10344c.

  18. VizieR Online Data Catalog: Large Quasar Astrometric Catalogue 2 (LQAC-2) (Souchay+, 2012)

    NASA Astrophysics Data System (ADS)

    Souchay, J.; Andrei, A. H.; Barache, C.; Bouquillon, S.; Suchet, D.; Taris, F.; Peralta, R.

    2011-11-01

    First of all we make a substantial review of the definitions and properties of quasars and AGN (Active Galactic Nuclei), the differenciation of these objects being unclear in the literature and even for specialists. This will serve our purpose when deciding which kinds of objects will be taken into account in our compilation. Then we carry out the cross-identification between the 9 catalogues of quasars chosen for their accuracy and their huge number of objects, using a flag for each of them, and including all the available data related to magnitudes (infrared and optical), radiofluxes and redshifts. We also perform cross identification with external catalogues 2MASS, B1.0 and GSC2.3 in order to complete photometric data of the objects. Moreover we compute the absolute magnitude of our extragalactic objects by taking into account the recent studies concerning the galactic absorption. In addition substantial improvements are brought with respect to the first release of the LQAC (Souchay et al., 2009, Cat. J/A+A/494/799). At first a LQAC name is given for each object based on its equatorial coordinates with respect to the ICRS, following a procedure which creates no ambiguity for identification. At second the equatorial coordinates of the objects are recomputed more accurately according to the algorithms used for the elaboration of the Large Quasar Reference Frame (LQRF) (Andrei et al., 2009, Cat. I/313). At third we introduce a morphological classification for the objects which enables in particular to define clearly if the object is point-like or extended. Our final catalogue, called LQAC-2, contains 187 504 quasars. This is roughly larger than the 113 666 quasars recorded in the first version of the LQAC (Souchay et al., 2009, Cat. J/A+A/494/799) and a little more than the number of quasars recorded in the up-dated version of the Veron Cetty and Veron (2010, Cat. VII/258) catalogue, which was the densest compilation of quasars up to now. In addition to the

  19. VizieR Online Data Catalog: Galactic open clusters in RAVE (Conrad+, 2014)

    NASA Astrophysics Data System (ADS)

    Conrad, C.; Scholz, R.-D.; Kharchenko, N. V.; Piskunov, A. E.; Schilbach, E.; Roser, S.; Boeche, C.; Kordopatis, G.; Siebert, A.; Williams, M.; Munari, U.; Matijevic, G.; Grebel, E. K.; Zwitter, T.; de Jong, R. S.; Steinmetz, M.; Gilmore, G.; Seabroke, G.; Freeman, K.; Navarro, J. F.; Parker, Q.; Reid, W.; Watson, F.; Gibson, B. K.; Bienayme, O.; Wyse, R.; Bland-Hawthorn, J.; Siviero, A.

    2014-01-01

    The presented tables summarise new radial velocities and average metallicities for Galactic open clusters extracted from the Catalogue of Open Cluster Data (COCD; Kharchenko et al. 2005, Cat. J/A+A/438/1163, J/A+A/440/403). The data were obtained from the RAdial Velocity Experiment (RAVE; Kordopatis et al. 2013AJ....146..134K) through a cross match with the stellar catalogues related to the COCD. The RV and [M/H] values were computed as weighted means, considering the individual uncertainties of the included members and their cluster membership probability based on position, proper motion, and photometry. The three uncertainties listed originate from different calculations: "RVRAVE" and "MetRAVE" are the weighted mean values for RV and [M/H] "errRV" and "errMet" are equivalent to the uncertainty of the mean values "sigRV" and "sigMet" are the standard deviations of the mean values "eRV" and "eMet" weighted mean values of the individual uncertainties of the included open cluster (OC) members For the calculations we primarily considered most probable OC members (best members) with a membership probability of at least 61%. Only in cases where just one or no most probable members was available we also included possible members (good members) with membership probabilities above 14%. In the table we include the numbers for both types of members separately: best members -> "bmem" and good members -> "gmem". We included reference values for RVs from the second version of the Catalogue of Radial Velocities with Astrometric Data (CRVAD-2) and the Catalogue of Radial Velocities of Open Clusters and Associations (CRVOCA) provided by Kharchenko et al. 2007, Cat. III/254). The CRVAD-2 reference values were computed according to the RAVE values for identified OC members. The CRVOCA references were directly extracted from the catalogue and number of OC members used are given in column "nmem". The reference values for [M/H] were obtained from the online compilation provided by Dias

  20. VizieR Online Data Catalog: Collision strengths in FeIX (Tayal+, 2015)

    NASA Astrophysics Data System (ADS)

    Tayal, S. S.; Zatsarinny, O.

    2016-02-01

    Collision strengths and thermally averaged collision strengths for a large number of extreme-ultraviolet lines of FeIX arising by electron impact have been reported. The thermally averaged collision strengths are calculated at electron temperatures in the range 104-107K for the 122043 forbidden and allowed transitions between the 370 fine-structure levels. The atomic parameters for FeIX play an important role in modeling of various astrophysical plasmas, including especially the solar corona. The B-spline Breit-Pauli R-matrix method has been used in the calculation of collision strengths. The target wave functions and transition probabilities have been determined by combining the multiconfiguration Hartree-Fock method with the B-spline box-based multichannel expansions. We have included 370 fine-structure levels of FeIX in the energy region up to 3s23p55s states. The close-coupling expansion includes levels of the 3s23p6, 3s23p53d, 4l, 5s, 3s3p63d, 4s, 4p, 3s23p43d2, 3s3p53d2 configurations and some low-lying levels of the 3s23p33d3 configuration in our collision strengths and transition probabilities calculations. There is a good agreement with the previous R-matrix collision strength calculations by Storey et al. (2002, J/A+A/394/753) and Del Zanna et al. (2014, J/A+A/565/A77) for transitions between the lowest 17 levels of the 3s23p6, 3s23p53d and 3s3p63d configurations, especially for electron temperatures logT(K)>=5.0. The transitions between the first 17 levels are dominated by Rydberg series of resonances converging to the levels of the 3s23p43d2 configuration. The present results and the calculation of Del Zanna et al. show significant differences for many weaker forbidden and intercombination transitions with thermally averaged collision strengths smaller than 0.01. (3 data files).

  1. Methods Development for In Situ Laser-Ablation Pb and Sr Isotopic Analyses Using a Double-Focusing Single-Collector ICPMS

    NASA Astrophysics Data System (ADS)

    Pietruszka, A. J.; Neymark, L. A.

    2014-12-01

    Laser-ablation (LA) ICPMS isotopic analyses of Pb and Sr in geological materials have mostly used multi-collector instruments equipped with Faraday-type detectors (e.g., [1-3]). The main limitation of this approach is that samples with relatively high concentrations of Pb and Sr are typically required. Here we present the development of analytical methods for the accurate and precise in situ measurement of Pb and Sr isotope ratios in relatively low-concentration samples using a laser ablation system (193-nm excimer laser) with a double-focusing single-collector (SC) ICPMS (Nu AttoMTM). Our methods build on published techniques [4-6] that used different LA-SC-ICPMS instrumentation to demonstrate the benefits of fast-scanning ion-counting measurements combined with flat-top peaks. We have paid special attention to the characterization and correction of instrumental artifacts using solutions of the NIST SRM981 Pb and SRM987 Sr standards in "wet plasma" mode. For Pb, this includes correcting for the interference of 204Hg on 204Pb, characterizing the effects of tails from thallium (at masses 203 and 205) on the Pb peaks, evaluating the stability of the instrumental mass bias, and maintaining linearity of the detector response over the full dynamic range. For Sr, this includes correcting for the interference of 86Kr on 86Sr and 87Rb on 87Sr, verifying the accuracy of an internal correction for instrumental mass bias, and calibrating the ion optics scanning parameters. LA-SC-ICPMS results for Pb and Sr isotopic measurements of international glass standards and newly developed in-house mineral and glass reference materials will be presented. [1] Davidson et al. (2001) EPSL 184, 427-442. [2] Ramos et al. (2004) Chem. Geol. 211, 135-158. [3] Simon et al. (2007) GCA 71, 2014-2035. [4] Jochum et al. (2005) IJMS 242, 281-289. [5] Jochum et al. (2006) JAAS 21, 666-675. [6] Jochum et al. (2009) JAAS 24, 1237-1243.

  2. Recommandations sur l’examen pelvien de dépistage systématique

    PubMed Central

    Tonelli, Marcello; Gorber, Sarah Connor; Moore, Ainsley; Thombs, Brett D.

    2016-01-01

    Résumé Objectif Examiner les lignes directrices de 2014 de l’American College of Physicians (ACP) en matière d’examens pelviens de dépistage du cancer (autre que du col), des maladies inflammatoires pelviennes ou d’autres affections gynécologiques bénignes afin de déterminer si les lignes directrices de l’ACP en matière d’examens pelviens systématiques sont conformes aux normes établies par le Groupe d’étude canadien sur les soins de santé préventifs (GECSSP) et peuvent être adaptées ou adoptées. Méthodologie La méthode SNAP-IT (Smooth National Adaptation and Presentation of Guidelines to Improve Thrombosis Treatment) a servi à déterminer si les lignes directrices de l’ACP étaient conformes aux normes du GECSSP et pouvaient être adaptées ou adoptées. Recommandations Le GECSSP recommande de ne pas effectuer un examen pelvien de dépistage des cancers non cervicaux, des maladies inflammatoires pelviennes ou d’autres affections gynécologiques chez les femmes asymptomatiques. Il s’agit d’une forte recommandation reposant sur des données probantes de qualité modérée. Conclusion Le GECSSP adopte la recommandation en matière d’examen pelvien de dépistage, comme publiée par l’ACP en 2014.

  3. HLW Glass Studies: Development of Crystal-Tolerant HLW Glasses

    SciTech Connect

    Matyas, Josef; Huckleberry, Adam R.; Rodriguez, Carmen P.; Lang, Jesse B.; Owen, Antionette T.; Kruger, Albert A.

    2012-04-02

    In our study, a series of lab-scale crucible tests were performed on designed glasses of different compositions to further investigate and simulate the effect of Cr, Ni, Fe, Al, Li, and RuO2 on the accumulation rate of spinel crystals in the glass discharge riser of the HLW melter. The experimental data were used to expand the compositional region covered by an empirical model developed previously (Matyáš et al. 2010b), improving its predictive performance. We also investigated the mechanism for agglomeration of particles and impact of agglomerates on accumulation rate. In addition, the TL was measured as a function of temperature and composition.

  4. Hydrogenic Rydberg States of Molecular van der Waals Complexes: Resolved Rydberg Spectroscopy of DABCO-N2

    NASA Astrophysics Data System (ADS)

    Cockett, Martin C.; Watkins, Mark J.

    2004-01-01

    The complementary threshold ionization techniques of MATI and ZEKE spectroscopy have been used to reveal well-resolved, long-lived (>10 μs) hydrogenic Rydberg series (50≤n≤98) in a van der Waals complex formed between a polyatomic molecule and a diatomic molecule for the first time. The series are observed within 50 cm-1 of the adiabatic ionization threshold as well as two core-excited thresholds corresponding to excitation of up to two quanta in the van der Waals vibra­tional mode.

  5. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2014-06-01

    Future lune ? - L'âge de la Lune - Des volcans actifs sur Vénus - Un lac dans le cratère Gusev ? - Météorites et atmosphère martiennes - L’hexagone de Saturne - Pluton - Exo-Terre - Bêta Pictoris b - Cérès et Vesta depuis Mars - Naine froide - Parallaxes par Hubble - L2 Puppis et le sort du Soleil - Supernova et lentille gravitationnelle - Champ magnétique galactique - L’objet de Sakurai - Fermi et la matière noire - Lentille naine

  6. VizieR Online Data Catalog: GALEX catalog of star clusters in M31 (Kang+, 2012)

    NASA Astrophysics Data System (ADS)

    Kang, Y.; Rey, S.-C.; Bianchi, L.; Lee, K.; Kim, Y.; Sohn, S. T.

    2012-07-01

    We construct a new compiled catalog of star clusters in M31 carefully considering three previously published catalogs: RBC version 4 (v4; see also Galleti et al., 2004, Cat. J/A+A/416/917), Caldwell et al. (2009, Cat. J/AJ/137/94, 2011AJ....141...61C), and Peacock et al. (2010, Cat. J/MNRAS/402/803). In this paper, we only consider 700 star clusters that are classified as confirmed star clusters at least in one of the three catalogs. We used UV images from the Nearby Galaxy Survey (NGS) obtained by GALEX in two UV bands: far-ultraviolet (FUV; 1350-1750Å) and near-ultraviolet (NUV; 1750-2750Å). A total of 23 images (about 17deg2) have covered most of the disk and halo of M31. The details of the GALEX observations for M31 are presented in Rey et al. (2005ApJ...619L.119R, 2007, Cat. J/ApJS/173/643). (2 data files).

  7. VizieR Online Data Catalog: HE 2252-4225 abundance analysis (Mashonkina+, 2014)

    NASA Astrophysics Data System (ADS)

    Mashonkina, L.; Christlieb, N.; Eriksson, K.

    2014-07-01

    HE 2252-4225 was identified as a candidate metal-poor star in the Hamburg/ESO Survey (HES), and it was included in the target list of the Hamburg/ESO R-process-Enhanced Star survey (HERES, Christlieb et al., Paper I, 2004A&A...428.1027C). Stellar parameters, Teff=4708+-100K, logg=1.53+/-0.24, and [Fe/H]=-2.83+/-0.12, were first determined by Barklem et al. (Paper II. Cat. J/A+A/439/129) based on automated abundance analysis of high-resolution "snapshot" spectra. The photometry was taken from Beers et al. (2007, Cat. J/ApJS/168/128). High-quality spectra of this star was acquired during May-September 2005 with the VLT and UVES in dichroic mode. The BLUE390+RED580 (9h total integration time) and BLUE437+RED860 (10h) standard settings were employed to ensure a wide wavelength coverage. (2 data files).

  8. Curie temperature, exchange integrals, and magneto-optical properties in off-stoichiometric bismuth iron garnet epitaxial films

    NASA Astrophysics Data System (ADS)

    Vertruyen, B.; Cloots, R.; Abell, J. S.; Jackson, T. J.; da Silva, R. C.; Popova, E.; Keller, N.

    2008-09-01

    We have studied the influence of the stoichiometry on the structural, magnetic, and magneto-optical properties of bismuth iron garnet (Bi3Fe5O12) thin films grown by pulsed laser deposition. Films with different stoichiometries have been obtained by varying the Bi/Fe ratio of the target and the oxygen pressure during deposition. Stoichiometry variations influence the Curie temperature TC by tuning the (Fe)-O-[Fe] geometry: TC increases when the lattice parameter decreases, contrary to what happens in the case of stoichiometric rare-earth iron garnets. The thermal variation of the magnetization, the Faraday rotation, and the Faraday ellipticity have been analyzed in the frame of the Néel two-sublattice magnetization model giving energies of -48K (4.1 meV), -29K (2.5 meV), and 84 K (7.3 meV) for the three magnetic exchange integrals jaa , jdd , and jad , respectively. Magneto-optical spectroscopy linked to compositional analysis by Rutherford backscattering spectroscopy shows that Bi and/or Fe deficiencies also affect the spectral variation (between 1.77 and 3.1 eV). Our results suggest that bismuth deficiency has an effect on the magneto-optical response of the tetrahedral Fe sublattice, whereas small iron deficiencies affect predominantly the magneto-optical response of the octahedral sublattice.

  9. VizieR Online Data Catalog: SMC Be stars candidates (Mennickent+, 2002)

    NASA Astrophysics Data System (ADS)

    Mennickent, R. E.; Pietrzynski, G.; Gieren, W.; Szewczyk, O.

    2013-10-01

    Recently the OGLE experiment has provided accurate light curves and colours for about 2 millions stars in the Small Magellanic Cloud. We have examined this database for its content of Be stars, applying some selection criteria, and we have found a sample of ~1000 candidates. Some of these stars show beautiful light curves with amazing variations never observed in any Galactic variable. We find outbursts in 13% of the sample (type-1 stars), high and low states in 15%, periodic variations in 7%, and the usual variations seen in Galactic Be stars in 65% of the cases. The Galactic counterparts of type-1 objects could be the outbursting Be stars found by Hubert & Floquet (1998, Cat. J/A+A/335/565) after the analysis of Hipparcos photometry. We discuss the possibility that type-1 stars could correspond to Be stars with accreting white dwarf companions or alternatively, blue pre-main sequence stars surrounded by thermally unstable accretion disks. We provide coordinates and basic photometric information for these stars and some examples of light curves. (4 data files).

  10. VizieR Online Data Catalog: Stellar atmospheric parameters in MILES library (Cenarro+, 2007)

    NASA Astrophysics Data System (ADS)

    Cenarro, A. J.; Peletier, R. F.; Sanchez-Blazquez, P.; Selam, S. O.; Toloba, E.; Cardiel, N.; Falcon-Barroso, J.; Gorgas, J.; Jimenez-Vicente, J.; Vazdekis, A.

    2007-09-01

    We present a homogeneous set of stellar atmospheric parameters (Teff, logg, [Fe/H]) for MILES, a new spectral stellar library covering the range λλ3525-7500Å at 2.3Å (FWHM) spectral resolution. The library consists of 985 stars spanning a large range in atmospheric parameters, from super-metal-rich, cool stars to hot, metal-poor stars. The spectral resolution, spectral type coverage and number of stars represent a substantial improvement over previous libraries used in population synthesis models. The atmospheric parameters that we present here are the result of a previous, extensive compilation from the literature. In order to construct a homogeneous data set of atmospheric parameters we have taken the sample of stars of Soubiran, Katz & Cayrel (1998, Cat. <J/A+AS/133/221>, which has very well determined fundamental parameters, as the standard reference system for our field stars, and have calibrated and bootstrapped the data from other papers against it. The atmospheric parameters for our cluster stars have also been revised and updated according to recent metallicity scales, colour-temperature relations and improved set of isochrones. (2 data files).

  11. VizieR Online Data Catalog: New variable chemically peculiar stars (Paunzen+ 1998)

    NASA Astrophysics Data System (ADS)

    Paunzen, E.; Maitzen, H. M.

    1998-10-01

    Since variability of chemically peculiar (CP) stars plays an important role for the astrophysical explanation of their outstanding behaviour, we have identified new variable CP stars listed in Renson's catalogue using the extensive Hipparcos Variability Annex. From the 293 objects found, 33 were excluded because they are not CP stars and/or have no period listed, half of the remaining stars are newly identified and half had been already included in the catalogue of variable CP stars by Catalano & Renson (1997, Cat. <J/A+AS/121/57>). Most of the newly identified variability is due to an apparent magnetic field coupled with stellar rotation (oblique rotator model). The constraints of this model are fulfilled for all but three CP2 stars. Variations of bona fide Am-Fm stars are exclusively explained by eclipses of binary systems. Furthermore eight candidates of the gamma Doradus group (pulsating Am-Fm stars) were detected. Table 1 (table1.dat) presents the newly identified chemically peculiar stars. (1 data file).

  12. LA-ICP-MS Pb-U Dating of Young Zircons from the Kos-Nisyros Volcanic Centre, SE Aegean Arc (Greece)

    NASA Astrophysics Data System (ADS)

    Guillong, M.; Von Quadt, A.; Peytcheva, I.; Bachmann, O.

    2014-12-01

    Zircon Pb-U dating has become a key technique for answering many important questions in geosciences. This paper describes a new LA-ICP-MS approach. We show, using previously dated samples of a large quaternary rhyolitic eruption in the Kos-Nisyros volcanic centre (the 161 ka Kos Plateau Tuff), that the precision of our LA-ICP-MS method is as good as via SHRIMP, while ID-TIMS measurements confirm the accuracy. Gradational age distribution over >140 ka of the Kos zircons and the near-absence of inherited cores indicate near-continuous crystallisation in a growing magma reservoir with little input from wall rocks. Previously undated silicic eruptions from Nisyros volcano (Lower Pumice, Nikia Flow, Upper Pumice), which are stratigraphically constrained to have happened after the Kos Plateau Tuff, are dated to be younger than respectively 124 ± 35 ka, 111 ± 42 ka and 70 ± 24 ka. Samples younger than 1 Ma were corrected for initial thorium disequilibrium using a new formula that also accounts for disequilibrium in 230Th decay. Guillong, M. et al., 2014, JAAS, 29, p. 963-967; doi: 10.1039/c4ja00009a.

  13. VizieR Online Data Catalog: Super-metal-rich stars (Buzzoni+, 2001)

    NASA Astrophysics Data System (ADS)

    Buzzoni, A.; Chavez, M.; Malagnini, M. L.; Morossi, C.

    2002-01-01

    We present Lick spectral indices for a complete sample of 139 candidate super-metal-rich stars of different luminosity classes (MK type from I to V). For 91 of these stars we were able to identify, in an accompanying paper, the fundamental atmosphere parameters. This confirms that at least 2/3 of the sample consists of stars with [Fe/H] in excess of +0.1 dex. Optical indices for both observations and fiducial synthetic spectra have been calibrated to the Lick system according to Worthey et al. (1994, Cat. ) and include the FeI indices of Fe5015, Fe5270, and Fe5335 and the MgI and MgH indices of Mg2 and Mgb at 5180Å. The internal accuracy of the observations is found to be σ(Fe5015)=10.32Å, σ(Fe5270)=10.19Å, σ(Fe5335)=10.22Å, σ(Mg2)=10.004mag, and σ(Mgb)=10.19Å. This is about a factor of 2 better than the corresponding theoretical indices from the synthetic spectra, the latter being a consequence of the intrinsic limitations in the input physics, as discussed by Chavez et al. (1997, Cat. <J/A+AS/126/267>). (1 data file).

  14. VizieR Online Data Catalog: CN in circumstellar envelopes survey (Bachiller+ 1997)

    NASA Astrophysics Data System (ADS)

    Bachiller, R.; Fuente, A.; Bujarrabal, V.; Colomer, F.; Loup, C.; Omont, A.; de Jong, T.

    1996-08-01

    We list in Table 1 the observed stars together with some of their characteristics. Distances, expansion velocities, mass loss rates, and spectral types are taken from the compilations of Bujarrabal et al. (1994) <J/A+A/285/247> and Loup et al. (1993A&AS...99..291). The sample includes C-rich and O-rich objects, some S-stars, a few proto-PN, and a young PN (NGC7027). See paper for more details. In Table 2, we give some of the observational parameters. Alow and Ahigh refer to the integrated intensity of the low-frequency and high-frequency fine-structure groups. The intrinsic intensity ratios, R=Ahigh/Alow, are R(1-0)=2 and R(2-1)=1.8. In principle, the observation of several components with different intrinsic strengths allows an estimate of the line optical depth, and the value of R gives an estimate of the envelope thickness. (2 data files).

  15. VizieR Online Data Catalog: MILO. I. HD 7449 radial velocities (Rodigas+, 2016)

    NASA Astrophysics Data System (ADS)

    Rodigas, T. J.; Arriagada, P.; Faherty, J.; Anglada-Escude, G.; Kaib, N.; Butler, R. P.; Shectman, S.; Weinberger, A.; Males, J. R.; Morzinski, K. M.; Close, L. M.; Hinz, P. M.; Crane, J. D.; Thompson, I.; Teske, J.; Diaz, M.; Minniti, D.; Lopez-Morales, M.; Adams, F. C.; Boss, A. P.

    2016-04-01

    We observed HD 7449 using the Magellan Clay Telescope at the Las Campanas Observatory in Chile on the nights of UT 2014 November 5 and 22. We observed the star with VisAO at Ys (0.99um) and with Clio-2 at H (1.65um) and Ks (2.15um) on the first night and with VisAO at r' (0.63um), i' (0.77um), z' (0.91um), and with Clio-2 at J (1.1um) on the second night. RV data on HD 7449 were first acquired as part of the Magellan Planet Search Program, which originally made use of the MIKE echelle spectrometer (R~70000 in the blue and ~50000 in the red; wavelength coverage ranges from 3900 to 6200Å) on the Magellan Clay telescope until 2009 September. HD 7449 was subsequently observed using the Carnegie Magellan/PFS (3880-6680Å with R~80000 in the iodine region). We also included in our analysis RVs measured with HARPS and CORALIE. These RVs were originally reported in Dumusque et al. (2011, J/A+A/535/A55). HARPS data on HD 7449 has been supplemented by the ESO archive. See section 2.2 for further explanations. (1 data file).

  16. VizieR Online Data Catalog: The VMC survey. XIX. Classical Cepheids in SMC (Ripepi+, 2016)

    NASA Astrophysics Data System (ADS)

    Ripepi, V.; Marconi, M.; Moretti, M. I.; Clementini, G.; Cioni, M.-R.; de Grijs, R.; Emerson, J. P.; Groenewegen, M. A. T.; Ivanov, V. D.; Piatti, A. E.

    2016-07-01

    In this paper, we present results for the Classical Cepheids (CCs) included in 11 tiles (each tile is 1.5deg2 on the sky) completely or nearly completely observed, processed, and cataloged by the "VISTA near-infrared YJKs survey of the Magellanic Clouds System" (VMC) survey as of 2015 March 9 (including observations obtained until 2014 September). See Figure 1. VMC is a European Southern Observatory (ESO) public survey that is carried out with VIRCAM (VISTA InfraRed Camera) on the ESO/VISTA telescope. The scope of this paper is to present the results for the CCs in the SMC after four years of VMC observations. The SMC is known to host more than 4500 CCs, according to the OGLE III (Soszynski et al. 2010, J/AcA/60/17) and EROS 2 (Tisserand et al. 2007A&A...469..387T; Kim et al. 2014, J/A+A/566/A43) surveys. (2 data files).

  17. VizieR Online Data Catalog: SFR-M* relation from ZFOURGE (Tomczak+,

    NASA Astrophysics Data System (ADS)

    Tomczak, A. R.; Quadri, R. F.; Tran, K.-V. H.; Labbe, I.; Straatman, C. M. S.; Papovich, C.; Glazebrook, K.; Allen, R.; Brammer, G. B.; Cowley, M.; Dickinson, M.; Elbaz, D.; Inami, H.; Kacprzak, G. G.; Morrison, G. E.; Nanayakkara, T.; Persson, S. E.; Rees, G. A.; Salmon, B.; Schreiber, C.; Spitler, L. R.; Whitaker, K. E.

    2016-04-01

    The FourStar Galaxy Evolution Survey (ZFOURGE : Straatman C. M. S., Spitler L. R., Quadri R. F. et al 2015 ApJ submitted) is a deep near-IR survey conducted with the FourStar imager covering one 11'x11' pointing in each of the three legacy fields CDF-S (Giacconi et al. 2002, J/ApJS/139/369), COSMOS (Capak et al. 2007, II/284) and UDS (Lawrence et al. 2007, see II/319) reaching depths of ~26mag in J1, J2, J3, and ~25mag in Hs, Hl, and Ks. We make use of Spizer/MIPS (GOODS-S: PI Dickinson, COSMOS: PI Scoville, UDS: PI Dunlop) and Herschel/PACS data (GOODS-S: Elbaz et al. 2011, J/A+A/533/A119, COSMOS & UDS: PI Dickinson) for measuring total infrared luminosities (LIR) to derive SFRs. Imaging from these observatories used in this study include 24, 100 and 160um. (1 data file).

  18. VizieR Online Data Catalog: IR sources spectroscopy in the AKARI NEP (Shim+, 2013)

    NASA Astrophysics Data System (ADS)

    Shim, H.; Im, M.; Ko, J.; Jeon, Y.; Karouzos, M.; Kim, S. J.; Lee, H. M.; Papovich, C.; Willmer, C.; Weiner, B. J.

    2013-09-01

    Most of the targets for the spectroscopic observation were selected from the optical to mid-infrared band-merged photometry catalog over the NEP-Wide field (Kim et al. 2012, Cat. J/A+A/548/A29). The observations, with the MMT/Hectospec spectrograph, were executed in queue mode: a total of five configurations were observed between 2008 May and November, with each configuration covering an area within a 1deg diameter circle. The observations used the 270 line/mm grating covering ~3700Å to ~8500Å, with a spectral resolution of about 6.2Å. We obtained optical spectra using the Hydra multi-object spectrograph on WIYN, the 3.5m telescope at the Kitt Peak National Observatory, on the nights of 2008 June 27-30. The covered wavelength range is 4500-9000Å, yet the spectrum quality is very poor beyond 8000Å. We used 98 red fibers feeding the bench spectrograph with a 316 lines/mm grating, yielding a spectral resolution of 5.7Å. (2 data files).

  19. Update on SLD Engineering Tools Development

    NASA Technical Reports Server (NTRS)

    Miller, Dean R.; Potapczuk, Mark G.; Bond, Thomas H.

    2004-01-01

    The airworthiness authorities (FAA, JAA, Transport Canada) will be releasing a draft rule in the 2006 timeframe concerning the operation of aircraft in a Supercooled Large Droplet (SLD) environment aloft. The draft rule will require aircraft manufacturers to demonstrate that their aircraft can operate safely in an SLD environment for a period of time to facilitate a safe exit from the condition. It is anticipated that aircraft manufacturers will require a capability to demonstrate compliance with this rule via experimental means (icing tunnels or tankers) and by analytical means (ice prediction codes). Since existing icing research facilities and analytical codes were not developed to account for SLD conditions, current engineering tools are not adequate to support compliance activities in SLD conditions. Therefore, existing capabilities need to be augmented to include SLD conditions. In response to this need, NASA and its partners conceived a strategy or Roadmap for developing experimental and analytical SLD simulation tools. Following review and refinement by the airworthiness authorities and other international research partners, this technical strategy has been crystallized into a project plan to guide the SLD Engineering Tool Development effort. This paper will provide a brief overview of the latest version of the project plan and technical rationale, and provide a status of selected SLD Engineering Tool Development research tasks which are currently underway.

  20. VizieR Online Data Catalog: VLTS. B stars multiplicity (Dunstall+, 2015)

    NASA Astrophysics Data System (ADS)

    Dunstall, P. R.; Dufton, P. L.; Sana, H.; Evans, C. J.; Howarth, I. D.; Simon-Diaz, S.; de Mink, S. E.; Langer, N.; Maiz Apellaniz, J.; Taylor, W. D.

    2015-05-01

    The VFTS spectra were obtained with the Fibre Large Array Multi-Element Spectrograph (FLAMES) on the Very Large Telescope (VLT). Classifications for the 438 B-type stars observed in the VFTS were given by Evans et al. (2015, cat. J/A+A/574/A13). These are located in the main clusters in the 30 Dor region (i.e. NGC 2070, NGC 2060, Hodge 301, SL 639) and the local field population (see Fig. 4 from Evans et al.). All of the spectra were obtained using the fibre-fed Medusa-Giraffe mode of FLAMES, so the sample does not include stars in R136, the young massive cluster at the core of 30 Dor, which is too densely populated for effective use of the Medusa fibres. This paper presents a radial-velocity (RV) analysis of the multiple observations of the B-type stars with the LR02 setting of the Giraffe spectrograph. The observations spanned 10-12 months for most targets, with an extended baseline of 22 months for 31 targets, due to a reobservation for operational reasons. Two or three consecutive exposures were obtained on any given night, with the longer-term sampling designed to optimise detection of binaries with periods up to ~200d, given scheduling constraints. (3 data files).

  1. VizieR Online Data Catalog: White-dwarf + main-sequence binaries in SDSS DR9 (Li+, 2014)

    NASA Astrophysics Data System (ADS)

    Li, L.; Zhang, F.; Han, Q.; Kong, X.; Gong, X.

    2015-05-01

    In 2012, we developed theoretical colour-selection criteria for searching the WDMS binaries from the SDSS, based on SDSS photometry (Liu et al., 2012, Cat. J/MNRAS/424/1841). We found that the number of WDMS binaries identified by us based on our colour-selection criteria is lower than the number identified by other investigators, such as Rebassa-Mansergas et al. (2012MNRAS.419..806R). Therefore, we enlarged the region of our colour-selection criteria based on distributions of our theoretical models because the previous colour-selection criteria did not completely cover some theoretical tracks in Liu et al. (2012, Cat. J/MNRAS/424/1841). Based on the enlarged colour-selection criteria mentioned above, we identified 1323 WDMS binaries from the SDSS DR9, and 1096 of these WDMS binaries have been identified by previous investigators (Silvestri et al., 2007, Cat. J/AJ/134/741; Heller et al., 2009, Cat. J/A+A/496/191; Liu et al., 2012, Cat. J/MNRAS/424/1841; Wei et al., 2013MNRAS.431.1800W; Rebassa-Mansergas et al., 2013, Cat. J/MNRAS/433/3398). Therefore, 227 new WDMS binaries have been identified from the SDSS DR9, and most of these (177) are WDMS binaries with a DA WD and an M-dwarf. (2 data files).

  2. VizieR Online Data Catalog: HCOO13CH3 rotational spectrum

    NASA Astrophysics Data System (ADS)

    Haykal, I.; Carvajal, M.; Tercero, B.; Kleiner, I.; Lopez, A.; Cernicharo, J.; Motiyenko, R. A.; Huet, T. R.; Guillemin, J. C.; Margules, L.

    2014-08-01

    The details about synthesis and identification by NMR spectroscopy were described in Carvajal et al. (2009, Cat. J/A+A/500/1109). The millimeter- and submillimeter-wave spectra were recorded using the Lille spectrometer that is based on solid-state sources. The sample pressure was in the range 20-30x10-6 bars. Spectra were recorded at room temperature (T=294K) in the 150-210, 225-315, 400-500, 500-630, and 780-940GHz regions with frequency steps of 30, 36, 48, 54, and 76kHz and an acquisition time of 35ms per point. The absolute accuracy of the line-centre frequency is estimated to be better than 30kHz (50kHz above 700GHz) for isolated lines and can be as low as 100kHz (150kHz above 700GHz) for blended or very weak lines. See section 2.2. The IRAM spectra will be published on the IRAM website: http://www.iram-institute.org/ (1 data file).

  3. VizieR Online Data Catalog: Light curves of type Ia supernovae in SNLS (Guy+, 2010)

    NASA Astrophysics Data System (ADS)

    Guy, J.; Sullivan, M.; Conley, A.; Regnault, N.; Astier, P.; Balland, C.; Basa, S.; Carlberg, R. G.; Fouchez, D.; Hardin, D.; Hook, I. M.; Howell, D. A.; Pain, R.; Palanque-Delabrouille, N.; Perrett, K. M.; Pritchet, C. J.; Rich, J.; Ruhlmann-Kleider, V.; Balam, D.; Baumont, S.; Ellis, R. S.; Fabbro, S.; Fakhouri, H. K.; Fourmanoit, N.; Gonzalez-Gaitan, S.; Graham, M. L.; Hsiao, E.; Kronborg, T.; Lidman, C.; Mourao, A. M.; Perlmutter, S.; Ripoche, P.; Suzuki, N.; Walker, E. S.

    2010-07-01

    The following files contain the Type Ia supernovae light curves of the Supernova Legacy Survey 3-year sample and the parameters needed to estimate luminosity distances: the apparent rest-frame B-band magnitude at maximum light, a shape parameter (stretch factor or X1) and a colour that approximately corresponds to the rest-frame B-V colour (plus a constant offset) at maximum light in B-band. Those parameters were obtained with two light curve fitters: SALT2 (Guy et al., 2007A&A...466...11G) and SiFTO (Conley et al., 2008ApJ...681..482C). The light curves are in the magnitude system defined in Regnault et al. (2009, Cat. J/A+A/506/999). Fluxes and uncertainties are given for a fiducial zero point of 30, a magnitude is mag=-2.5log10(Flux)+30. An additional table that is not in the paper gives the approximate coordinates of SNe images in MegaCam focal plane. They are needed to estimate the filter transmission function. This data can also be downloaded at the University of Toronto's Research Repository https://tspace.library.utoronto.ca/handle/1807/24512 (3 data files).

  4. VizieR Online Data Catalog: RACE-OC project. II. (Messina+, 2011)

    NASA Astrophysics Data System (ADS)

    Messina, S.; Desidera, S.; Lanzafame, A. C.; Turatto, M.; Guinan, E. F.

    2011-10-01

    Rotational properties of late-type low-mass members of associations of known age provide a fundamental source of information on stellar internal structure and its evolution. We aim at determining the rotational and magnetic-related activity properties of stars at different stages of evolution. We focus our attention primarily on members of young stellar associations of known ages. Specifically, we extend our previous analysis in Paper I (Messina et al., 2010, Cat. J/A+A/520/A15) to 3 additional young stellar associations beyond 100pc and with ages in the range 6-40Myr: {epsilon} Chamaeleontis (~6Myr), Octans (~20Myr), and Argus (~40Myr). Additional rotational data of {eta} Chamaeleontis and IC 2391 clusters are also considered. Rotational periods were determined by applying the Lomb-Scargle periodogram technique to photometric time-series data obtained by the All Sky Automated Survey (ASAS) and the Wide Angle Search for Planets (SuperWASP) archives. The magnetic activity level was derived from the amplitude of the V light curves. (4 data files).

  5. VizieR Online Data Catalog: Redshifts in nine galaxy cluster fields (Hwang+, 2014)

    NASA Astrophysics Data System (ADS)

    Hwang, H. S.; Geller, M. J.; Diaferio, A.; Rines, K. J.; Zahid, H. J.

    2016-05-01

    Among the 30 clusters at z ~ 0.2 with Subaru weak-lensing maps in Okabe et al. (2010PASJ...62..811O), we first select five clusters with dense redshift data in the Hectospec Cluster Survey (HeCS; Rines et al. 2013, J/ApJ/767/15). We supplement these data with redshifts from the literature (Girardi et al. 2006, J/A+A/455/45; Drinkwater et al. 2010, J/MNRAS/401/1429; Owers et al. 2011, J/ApJ/741/122; Lemze et al. 2013, J/ApJ/776/91; Jaffe et al. 2013, J/MNRAS/431/2111; Geller et al. 2014ApJ...783...52G), the Sloan Digital Sky Survey data release 10 (SDSS DR10; Ahn et al. 2014ApJS..211...17A), and the NASA/IPAC Extragalactic Database (NED). We made additional observations of four HeCS clusters (A689, A697, A750, and A963) in 2013 February and March with the 300 fiber Hectospec on the MMT 6.5m telescope (Fabricant et al. 2005PASP..117.1411F). The four clusters are within the footprint of the SDSS DR10. (2 data files).

  6. Evolutionary models of binaries

    NASA Astrophysics Data System (ADS)

    van Rensbergen, Walter; Mennekens, Nicki; de Greve, Jean-Pierre; Jansen, Kim; de Loore, Bert

    2011-07-01

    We have put on CDS a catalog containing 561 evolutionary models of binaries: J/A+A/487/1129 (Van Rensbergen+, 2008). The catalog covers a grid of binaries with a B-type primary at birth, different values for the initial mass ratio and a wide range of initial orbital periods. The evolution was calculated with the Brussels code in which we introduced the spinning up and the creation of a hot spot on the gainer or its accretion disk, caused by impacting mass coming from the donor. When the kinetic energy of fast rotation added to the radiative energy of the hot spot exceeds the binding energy, a fraction of the transferred matter leaves the system: the evolution is liberal during a short lasting era of rapid mass transfer. The spin-up of the gainer was modulated using both strong and weak tides. The catalog shows the results for both types. For comparison, we included the evolutionary tracks calculated with the conservative assumption. Binaries with an initial primary below 6 Msolar show hardly any mass loss from the system and thus evolve conservatively. Above this limit differences between liberal and conservative evolution grow with increasing initial mass of the primary star.

  7. VizieR Online Data Catalog: Spectroscopy of nearby late-type stars (Maldonado+, 2010)

    NASA Astrophysics Data System (ADS)

    Maldonado, J.; Martinez-Arnaiz, R. M.; Eiroa, C.; Montes, D.; Montesinos, B.

    2010-06-01

    File table1 contains the name of the observed stars, coordinates, astrometric data, radial velocities and notes. Parallaxes are taken from van Leeuwen (2007, Cat. I/311) and proper motions from (2000, Cat. I/259). Radial velocities were derived from high-resolution spectra taken with the FOCES spectrograph at the Calar Alto observatory (Almeria, Spain) and the SARG spectrograph at the Telescopio Nazionale Galileo in La Palma (Canary Islands, Spain). Additional spectra from the public library "S4N" (Allende Prieto et al., 2004, Cat. J/A+A/420/183) were also used. Radial velocities were measured by cross-correlating the spectra of our programme stars with spectra of radial velocity standard stars taken from Barnes et al. (1986PASP...98..223B), Beavers et al. (1979PASP...91..698B), and Udry et al. (1999ASPC..185..383U, 1999ASPC..185..367U). For known spectroscopic binaries the radial velocity of the centre of mass of the system is given. These values are from Pourbaix et al. (Cat. B/sb9/) or Eker et al. (2008, Cat. V/128 ). Previous radial velocities reported in the literature are also given for comparison. (1 data file).

  8. Radar Inaccuracies and Mid-Air Collision Risk: Part 2 En Route Radar Separation Minima

    NASA Astrophysics Data System (ADS)

    Brooker, Peter

    2004-01-01

    A review of safety targets for en route ATC radar separation suggests that the existing target level of safety (TLS) is over-cautious. If risk budgeting principles are followed consistently, a ‘radar TLS’ of 1·0×10[minus sign]9 fatal aircraft accidents per flying hour is appropriate. This rate is consistent with Joint Aviation Authorities (JAA) guidance on system failure conditions leading to catastrophic accidents. Dynamic and static calculations using published data are compared. The new methodology shows where there are problems with the traditional static calculations, and how to improve the estimation. A further improvement introduces a simple robust model of the controller's decision processes. The focus is not on describing what controllers would generally do, but on setting criteria based on what they could not reasonably be expected to do. This additional ingredient into the calculation adds realism and ensures that attention is focused on hazardous correlated errors. Focused data collection would be an essential component of new risk estimates. The key information required would be on radar performance and the nature and frequency of use of radar separation, including the relative velocities for proximate events at closest point of approach and the frequency of correlated gross errors (through a conditional probability factor). If this factor is not properly taken into account, then the data collection and analysis could be inefficient.

  9. Threshold Ionization and Spin-Orbit Coupling of Ceracyclopropene Formed by Ethylene Dehydrogenation.

    PubMed

    Zhang, Yuchen; Schmidt, Michael W; Kumari, Sudesh; Gordon, Mark S; Yang, Dong-Sheng

    2016-09-01

    A Ce atom reaction with ethylene was carried out in a laser-vaporization metal cluster beam source. Ce(C2H2) formed by hydrogen elimination from ethylene was investigated by mass-analyzed threshold ionization (MATI) spectroscopy, isotopic substitutions, and relativistic quantum chemical computations. The theoretical calculations include a scalar relativistic correction, dynamic electron correlation, and spin-orbit coupling. The MATI spectrum exhibits two nearly identical band systems separated by 128 cm(-1). The separation is not affected by deuteration. The two-band systems are attributed to spin-orbit splitting and the vibrational bands to the symmetric metal-ligand stretching and in-plane carbon-hydrogen bending excitations. The spin-orbit splitting arises from interactions of a pair of nearly degenerate triplets and a pair of nearly degenerate singlets. The organolanthanide complex is a metallacyclopropene in C2v symmetry. The low-energy valence electron configurations of the neutral and ion species are Ce 4f(1)6s(1) and Ce 4f(1), respectively. The remaining two electrons that are associated with the isolated Ce atom or ion are spin paired in a molecular orbital that is a bonding combination between a 5d Ce orbital and a π* antibonding orbital of acetylene. PMID:27548080

  10. Rotations of molecular photoelectron angular distributions in above threshold ionization of H2+ by intense circularly polarized attosecond UV laser pulses

    NASA Astrophysics Data System (ADS)

    Yuan, Kai-Jun; Chelkowski, Szczepan; Bandrauk, André D.

    2014-10-01

    We present molecular photoelectron angular distributions (MPADs) in multi-photon ionization processes by circularly polarized attosecond UV laser pulses. Simulations are performed on the single electron aligned molecular ion H_2^+ by solving corresponding 3D time-dependent Schrödinger equations. Numerical results of molecular above threshold ionization (MATI) show that rotations of MPADs with respect to the molecular and polarization axes depend on pulse intensities and photoelectron kinetic energies. We attribute the rotation to Γ, the difference between parallel and perpendicular ionization probabilities. It is found that in a resonant ionization process, the rotation angle is also a function of the symmetry of intermediate electronic states. The coherent population transfer between the initial and the resonant electronic states is controlled by pulse intensities. Such dependence of rotations on the pulse intensity is absent in Rydberg resonant ionizations as well as in MATI at large energy photons ℏω > Ip, where ω is angular frequency of photons and Ip is the molecular ionization potential. We describe these processes by a multi-photon perturbation theory model. Effects of molecular alignment and pulse ellipticities on rotations are investigated, confirming the essence of the ionization parameter Γ in rotations of MPADs.

  11. Discovering General Multidimensional Associations

    PubMed Central

    Murrell, Ben; Murrell, Daniel; Murrell, Hugh

    2016-01-01

    When two variables are related by a known function, the coefficient of determination (denoted R2) measures the proportion of the total variance in the observations explained by that function. For linear relationships, this is equal to the square of the correlation coefficient, ρ. When the parametric form of the relationship is unknown, however, it is unclear how to estimate the proportion of explained variance equitably—assigning similar values to equally noisy relationships. Here we demonstrate how to directly estimate a generalised R2 when the form of the relationship is unknown, and we consider the performance of the Maximal Information Coefficient (MIC)—a recently proposed information theoretic measure of dependence. We show that our approach behaves equitably, has more power than MIC to detect association between variables, and converges faster with increasing sample size. Most importantly, our approach generalises to higher dimensions, estimating the strength of multivariate relationships (Y against A, B, …) as well as measuring association while controlling for covariates (Y against X controlling for C). An R package named matie (“Measuring Association and Testing Independence Efficiently”) is available (http://cran.r-project.org/web/packages/matie/). PMID:26991498

  12. Effect of noncovalent interactions on conformers of the n-butylbenzene monomer studied by mass analyzed threshold ionization spectroscopy and basis-set convergent ab initio computations.

    PubMed

    Tong, Xin; Cerný, Jirí; Müller-Dethlefs, Klaus; Dessent, Caroline E H

    2008-07-01

    Two conformational isomers of the aromatic hydrocarbon n-butylbenzene have been studied using two-color MATI (mass analyzed threshold ionization) spectroscopy to explore the effect of conformation on ionization dynamics. Cationic states of g auche-conformer III and anti- conformers IV were selectively produced by two-color excitation via the respective S 1 origins. Adiabatic ionization potentials of the gauche- and anti-conformations were determined to be 70146 and 69872 +/- 5 cm (-1) respectively. Spectral features and vibrational modes are interpreted with the aid of MP2/cc-pVDZ ab initio calculations, and ionization-induced changes in the molecular conformations are discussed. Complete basis set (CBS) ab initio studies at MP2 level reveal reliable energetics for all four n-butylbenzene conformers observed in earlier two-color REMPI (resonance enhanced multiphoton ionization) spectra. For the S 0 state, the energies of conformer III, IV and V are above conformer I by 130, 289, 73 cm (-1), respectively. Furthermore, the combination of the CBS calculations with the measured REMPI, MATI spectra allowed the determination of the energetics of all four conformers in the S 1 and D 0 states. PMID:18533642

  13. Effect of noncovalent interactions on the n-butylbenzene...Ar cluster studied by mass analyzed threshold ionization spectroscopy and ab initio computations.

    PubMed

    Tong, Xin; Cerný, Jirí; Müller-Dethlefs, Klaus

    2008-07-01

    Clusters of Ar bound to isomers of the aromatic hydrocarbon n-butylbenzene (BB) have been studied using two-color REMPI (resonance enhanced multiphoton ionization) and MATI (mass analyzed threshold ionization) spectroscopy to explore noncovalent vdW interactions between these two moieties. Blue shifts of excitation energy were observed for gauche-BB...Ar clusters, and red shifts for anti-BB...Ar clusters were observed. Adiabatic ionization energies (IEs) of the conformer BB-I...Ar and BB-V...Ar were determined as 70052 and 69845 +/- 5 cm (-1), respectively. Spectral features and vibrational modes were interpreted with the aid of UMP2/cc-pVDZ ab initio calculations. Data of complexation shifts of the alkyl-benzenes and their argon clusters were collected and discussed. Using the CCSD(T) method at complete basis set (CBS) level, interaction energies for the neutral ground states of BB-I...Ar and BB-V...Ar were obtained as 650 and 558 cm (-1), respectively. Combining the CBS calculation results and the REMPI and MATI spectra allowed further the determination of the interaction energies and the energetics of BB...Ar in the excited neutral S 1 and the D 0 cationic ground states. PMID:18533640

  14. Recharge and sustainability of a coastal aquifer in northern Albania

    NASA Astrophysics Data System (ADS)

    Kumanova, X.; Marku, S.; Fröjdö, S.; Jacks, G.

    2014-06-01

    The River Mati in Albania has formed a coastal plain with Holocene and Pleistocene sediments. The outer portion of the plain is clay, with three underlying aquifers that are connected to an alluvial fan at the entry of the river into the plain. The aquifers supply water for 240,000 people. Close to the sea the aquifers are brackish. The brackish water is often artesian and found to be thousands of years old. Furthermore, the salinity, supported by δ18O results, does not seem to be due to mixing with old seawater but due to diffusion from intercalated clay layers. Heavy metals from mines in the upstream section of River Mati are not an immediate threat, as the pH buffering of the river water is good. Moreover, the heavy metals are predominantly found in suspended and colloidal phases. Two sulphur isotope signatures, one mirroring seawater sulphate in the brackish groundwater (δ34S >21 ‰) and one showing the influence of sulphide in the river and the fresh groundwater (δ34S <10 ‰), indicate that the groundwater in the largest well field is recharged from the river. The most serious threat is gravel extraction in the alluvial fan, decreasing the hydraulic head necessary for recharge and causing clogging of sediments.

  15. VizieR Online Data Catalog: HST photometry of M31 globular clusters (Federici+, 2012)

    NASA Astrophysics Data System (ADS)

    Federici, L.; Cacciari, C.; Bellazzini, M.; Fusi Pecci, F.; Galleti, S.; Perina, S.

    2013-01-01

    -square parameter<1.5 if V>23.5,and <2.5 if V<23.5 and sharpness parameter between -0.3 and 0.3. The x,y coordinates, the magnitudes both in the Vegamag and in the Johnson-Cousins system, the global parameters 'chi', signal to noise, sharpness, and the ACS_WFC chip number are listed for each of the selected stars. BVI photometry for the clusters B008-G060, B010-G062, B023-G078, B088-G150, B158-G213, B220-G275, B224-G279, B225-G280, B366-G291, B407-G352,B255D-D072, B292-G010, B336-G067, B337-G068, B350-G162, and B531 has been taken from the CDS catalogs J/A+A/507/1375 (Perina et al., 2009) and J/A+A/531/A155 (Perina et al., 2011). (33 data files).

  16. Isotopic analysis of small Pb samples using MC-ICPMS: The limits of precision and comparison to TIMS

    NASA Astrophysics Data System (ADS)

    Amelin, Y.; Janney, P.; Chakrabarti, R.; Wadhwa, M.; Jacobsen, S. B.

    2008-12-01

    . Further enhancement in precision can be expected when the total ion yield is increased to 1.5-1.7%, the highest values reported for MC-ICPMS [2, 3], and with using ion beam detection systems optimized for measuring medium to small signals. [1] Amelin Y. and Davis W.J. (2006) JAAS 21, 1053-1061. [2] Thirlwall M.F. (2002) Chem. Geol. 184, 255-279. [3] Makishima A. et al. (2008) JAAS 23, 1102-1107

  17. Préface

    NASA Astrophysics Data System (ADS)

    Paulus, Werner; Meinnel, Jean

    2003-02-01

    En 1994, l'attribution du prix Nobel à Cliff Shull et Bert Brockhouse pour leurs travaux de pionniers pendant les années 50, concernant tant la diffusion élastique des neutrons que la diffusion inélastique, a été la reconnaissance éclatante de l'importance de la diffusion neutronique pour toute la communauté scientifique.Le grand intérêt du neutron pour la recherche s'appuie principalement sur ses propriétés physiques particulières :- les neutrons utilisés pour la caractérisation de la matière (et fournis en relativement grandes quantités par les réacteurs ou les sources à spallation) disposent de longueurs d'onde et d'énergies correspondant directement aux distances interatomiques et aux énergies d'agitation de la matière. Ainsi, par diffusion neutronique, on peut étudier en même temps la structure et le comportement dynamique de la matière ;- le fait que le neutron soit doué d'un moment magnétique lui permet d'interagir avec tout atome porteur d'un moment magnétique. Ceci permet de caractériser intimement le comportement magnétique de la matière à l'échelle microscopique ;- la possibilité de pouvoir varier facilement le contraste d'un même élément en utilisant ses différents isotopes fait du neutron un outil irremplaçable en chimie et physique du solide ainsi qu'en biologie et matière molle ;- enfin, n'ayant pas de charge électrique, les neutrons peuvent pénétrer la matière sans être absorbés significativement, ce qui rend possible une caractérisation non destructive des contraintes et textures sur de grosses pièces des matériaux.Toutes les qualités des neutrons mentionnées ci-dessus permettent de comprendre l'importance de la diffusion neutronique pour des domaines très nombreux et très différents à la fois en recherche fondamentale mais aussi pour des applications industrielles. L'utilisation de l'outil-neutron demande toutefois non seulement une bonne connaissance des différents mécanismes d

  18. VizieR Online Data Catalog: Radiation fields in star-forming galaxies (Popescu+, 2013)

    NASA Astrophysics Data System (ADS)

    Popescu, C. C.; Tuffs, R. J.

    2013-09-01

    Radiative transfer model calculations of energy density of radiation fields (RFs) are presented on a cylindrical grid (r,z). The radiation fields are given for different values of central face-on dust opacity in the B-band {tau}Bf, which is the only parameter of the model shaping the spatial variation of the RFs. Since the energy densities of the radiation fields are additive quantities, they scale with the spatially integrated luminosity density at a given wavelength. Therefore RFs are only calculated for a fixed reference luminosity density (see Section 3 of journal paper). The radiation fields are separately calculated for the disk, thin disk and bulge. For the bulge different values of the Sersic index are considered. In total calculations are for seven values of the central face-on dust opacity, taufB=0.1,0.3,0.5,1.0,2.0,4.0,8.0. Solutions for other values of taufB can be found by interpolation. Four values for the Sersic index of the bulge are considered, n=1,2,4,8. In total we have 7 (for taufB) x 6 (wavelengths) x 1 (disk) + 7 (for taufB) x 15 (wavelengths) x 1 ( thin disk) + 7 (for taufB) x 6 (wavelengths) x 4 (for Sersic indices of bulge) = 315 combinations. In our model we consider the wavelength range from 912 Angstroem to 5 micron, as listed in Table E.2 of Popescu et al. (2011, Cat. J/A+A/527/109). Thus, the library contains a total of 315 files with two-dimensional spatial grids of energy densities of the RFs, in files.tar file. (2 data files).

  19. VizieR Online Data Catalog: Long-term photometry of pre-MS stars (Poljancic Beljan+, 2014)

    NASA Astrophysics Data System (ADS)

    Poljancic Beljan, I.; Jurdana-Sepic, R.; Semkov, E. H.; Ibryamov, S.; Peneva, S. P.; Tsvetkov, M. K.

    2014-06-01

    We carried out a CCD BVRI photometric observational program for 17 stars (finding chart in Fig. 1) in the field of V2493 Cyg ("Gulf of Mexico"). The star sample was extracted from the SIMBAD astronomical database. The observational material comes from (i) the whole photographic plate stack preserved at Asiago Observatory (Italy) and the National Astronomical Observatory Rozhen (Bulgaria); from (ii) digitized plates from the Palomar Schmidt telescope; and (iii) several scanned plates from the Schmidt telescope of the Byurakan Astrophysical Observatory (Armenia). The CCD photometric observations were performed with the 2m RCC, the 50/70cm Schmidt and the 60cm Cassegrain telescopes of the National Astronomical Observatory Rozhen (Bulgaria) and the 1.3m RC telescope of the Skinakas Observatory1 of the Institute of Astronomy, University of Crete (Greece). More observational and technical details are given in Semkov et al. (2012, Cat. J/A+A/542/A43). All frames were exposed through a set of standard Johnson-Cousins filters. The time span covers almost 60 years, from 1954 to 2013; see table 2: -------------------------------------------------------------------------- Observatory/Telescope Medium Nobs Time span -------------------------------------------------------------------------- Asiago Schmidt 67/92 & 40/50 photogr. plates 198 30/08/1962-18/11/1998 Palomar Schmidt photogr. plates 6 5/07/1954-12/09/1994 Byurakan Schmidt 100/130 photogr. plates 6 28/08/1973-22/06/1977 Rozhen Schmidt 50/70 photogr. plates 4 18/06/1980-11/01/1991 Rozhen Schmidt and Cass. CCD 105 29/10/2000-06/03/2013 Skinakas 1.3m CCD 91 14/06/2000-22/09/2012 Rozhen 2m RCC CCD 35 1/06/1997-04/05/2013 -------------------------------------------------------------------------- (3 data files).

  20. Mg Isotope Fractionation Between E. coli and Growth Medium

    NASA Astrophysics Data System (ADS)

    Basset, R.; Lemelle, L.; Albalat, E.; Telouk, P.; Albarède, F.

    2008-12-01

    Magnesium is a major element in both microbial cells and minerals, immune to redox conditions and atmospheric interactions. In organic cells, Mg can be associated with membranes, with cytoplasm (either as an isolated ion or bound to proteins). Its isotope composition can be used to constrain the contribution of organic material to carbonate fluxes and the overall cycle of this element in the exogenous environment [1, 2]. Cells of DH5α E. coli strain were grown in Luria Broth medium and the Mg isotope fractionation between the cells and their growth medium determined after calcination in Pt crucibles, chemical purification by cation exchange chemistry in HCl medium [3] and isotopic analysis on a Nu HR MC-ICPMS. The yield is better than 96%. The Mg contents of 2.19 ± 0.08 mg per g DW in cells and 0.117 ± 0.001 mg per g DW in Luria Broth medium are consistent with literature data [4]. About half of the Mg initially present in the LB medium is taken up by the growing cells. At high cellular concentrations (OD600 = 3.5), cells are enriched in 26Mg by 0.97 ± 0.14 ‰ with respect to the culture medium. Although E. coli may not be a good proxy for oceanic plankton, such a substantial fractionation of Mg isotopes suggests that incorporation of even a few percent organic matter into oceanic oozes depletes oceanic Mg in its heavy isotopes and therefore accounts for the isotopic difference between riverine and marine Mg. [1] Drever, The Sea 5 (1974) 337-357 [2] Tipper et al., EPSL 250 (2006) 241-253 [3] Chang et al., JAAS 18 (2003) 296-301 [4] Outten et al., Science 292 (2001), 2488-2492

  1. High precision Pu isotope ratios using MC-ICPMS equipped with collision-cell technology to suppress U isobaric interferences

    NASA Astrophysics Data System (ADS)

    Granet, M.; Isnard, H.; Nonell, A.; Quidelleur, S.; Chartier, F.

    2009-04-01

    The measurement of Pu isotope ratios is of prime interest in both the environmental and nuclear research fields. First, new chronometric tracers need to be developed in order to understand and quantify the mechanisms and time-scales controlling the landscape evolution since it gives informations on climatic variations. Additionally, the analysis of Pu isotopes after irradiation of 235U is required in the transmutation field in order to determine basic neutronic data such as cross sections and reaction rates. High precision isotope ratios measurements are usually performed with sector field mass spectrometers, either by Thermal Ionization Mass Spectrometry (TIMS) or by Multiple Collection Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS). One of the major drawbacks in analysing Pu isotopes is the occurrence of U isobaric interferences: 238U-238Pu and 238UH+-239Pu. Here we propose to suppress these interferences by adding reactive gases in the collision-reaction cell of the MC-ICP-MS (Isoprobe, GV Instruments, Manchester, UK). The difference of reactivity for U and Pu towards these gases allows the measurement of Pu isotopes with precision and accuracy similar to those obtained after a previous chemical separation of Pu from U using anion-exchange resin. This study thus confirms that collision-reaction cells are powerful tools to perform isotopic measurements of soils, river sediments or irradiated materials without former systematic chemical separations as U interferences are completely removed in situ. References Granet et al. (2008), Spectrochimica Acta Part B 63, 1309-1314. Moureau et al. (2008), JAAS 23, 1538-1544.

  2. VizieR Online Data Catalog: Galaxy luminosity function at z =~ 7 (Bowler+, 2014)

    NASA Astrophysics Data System (ADS)

    Bowler, R. A. A.; Dunlop, J. S.; McLure, R. J.; Rogers, A. B.; McCracken, H. J.; Milvang-Jensen, B.; Furusawa, H.; Fynbo, J. P. U.; Taniguchi, Y.; Afonso, J.; Bremer, M. N.; Le Fevre, O.

    2015-02-01

    The two multiwavelength survey fields analysed in this paper contain a wealth of observations from X-ray to radio wavelengths. The analysis presented in this paper relies on the DR1 and DR2 of the ongoing UltraVISTA survey,1 which consists of Y, J, H and Ks imaging with the Visible and Infrared Camera (VIRCAM) on the VISTA telescope within the Cosmological Evolution Survey (COSMOS) field. The DR1, described in detail by McCracken et al. (2012A&A...544A.156M, Cat. J/A+A/544/A156), provided near-infrared imaging over the maximum area of the programme covering 1.5deg2. DR2 provides deeper data in strips that cover ~70 per cent of the full field as shown in Fig. 1. Integration times for the DR2 Y, J, H and Ks bands range from 29 to 82 h per pixel, compared with 11 to 14h per pixel from DR1. Throughout this paper, we refer to the DR2 imaging within the strips as the 'ultradeep' part of the survey, and the DR1 imaging over the full field as the 'deep' part. In this study, we use the 10th data release (DR10) of near-infrared imaging in the UDS field, from the UKIDSS (Lawrence et al., 2007MNRAS.379.1599L, Cat. II/314). The UKIDSS UDS consists of deep imaging (mAB~25, 5σ) in the J, H and K bands over a total area of 0.8deg2 centred on RA=02:17:48, DE=-05:05:57 (J2000). DR10 was made public in January 2013 and is available on the Wide Field Camera science archive. (5 data files).

  3. The actual development of European Aviation Safety Requirements in Aviation Medicine: Prospects of Future EASA Requirements

    PubMed Central

    Siedenburg, J

    2009-01-01

    Common Rules for Aviation Safety had been developed under the aegis of the Joint Aviation Authorities in the 1990ies. In 2002 the Basic Regulation 1592/2002 was the founding document of a new entity, the European Aviation Safety Agency. Areas of activity were Certification and Maintenance of aircraft. On 18 March the new Basic Regulation 216/2008, repealing the original Basic Regulation was published and applicable from 08 April on. The included Essential Requirements extended the competencies of EASA inter alia to Pilot Licensing and Flight Operations. The future aeromedical requirements will be included as Annex II in another Implementing Regulation on Personnel Licensing. The detailed provisions will be published as guidance material. The proposals for these provisions have been published on 05 June 2008 as NPA 2008- 17c. After public consultation, processing of comments and final adoption the new proposals may be applicable form the second half of 2009 on. A transition period of four year will apply. Whereas the provisions are based on Joint Awiation Requirement - Flight Crew Licensing (JAR-FCL) 3, a new Light Aircraft Pilot Licence (LAPL) project and the details of the associated medical certification regarding general practitioners will be something new in aviation medicine. This paper consists of 6 sections. The introduction outlines the idea of international aviation safety. The second section describes the development of the Joint Aviation Authorities (JAA), the first step to common rules for aviation safety in Europe. The third section encompasses a major change as next step: the foundation of the European Aviation Safety Agency (EASA) and the development of its rules. In the following section provides an outline of the new medical requirements. Section five emphasizes the new concept of a Leisure Pilot Licence. The last section gives an outlook on ongoing rulemaking activities and the opportunities of the public to participate in them. PMID:19561781

  4. Fresnel diffraction by circular aperture of Gaussian beams in gradient index media

    NASA Astrophysics Data System (ADS)

    Acosta, E.; Gomez-Reino, Carlos C.; Gonzalez, R. M.

    1990-07-01

    The intensity distribution of a gaussian beam propagating through GRIN media that has been truncated by a centered circular aperture is calculated by Fresnel-Kirchoff theory. On axis intensity is evaluated. 1 MATHEMATICAL TREATMENT AND DISCUSSION. The circular aperture in an opaque screen is located at z r is the radial coordinate. In the z half-space the medium has a refractive index profile given by 2 2 2 2 n (r (z)r ). For the z half-space the medium is considered to be homogeneous with n''l. The diffracted field in the z region when a gaussian beam source at z0 in the z region is evaluated in terms of Bessel functions. The beam at z can be represented in terms of its waist size and its half-width w(z0) and curvature radius R(z0) at the aperture plane. The Huygens-Fresnel diffraction formula with the Fresnel approximation can be evaluated as an infinite sum yielding: S 2 Akwn iknHr 2 J(aa) 00 01 1 1 2 n u(r w(z )JexP[ 2H JJ : exp(a C) (1) 1 0 1 n 2n! (aa) where H(z) and H2(z) are respectively the axial and the field rays1 a and C intensity distribution in the diffraction pattern is given by I(r This treatment predicts for the on axis intensity: I 2 2 nH 1 I I a 1 ia ki 1 0 2 I (z)cx . coshi

  5. VizieR Online Data Catalog: Hectospec survey of SZ clusters (HeCS-SZ) (Rines+, 2016)

    NASA Astrophysics Data System (ADS)

    Rines, K. J.; Geller, M. J.; Diaferio, A.; Hwang, H. S.

    2016-05-01

    HeCS-SZ is an extension of the HeCS survey to include clusters that enable the construction of an SZ-limited sample. We measured 7721 new redshifts with MMT/Hectospec in 21 clusters selected from the Planck SZ catalog (2014A&A...571A..20P; arXiv:1502.01597). We combine these new measurements with the existing HeCS (Hectospec Cluster Survey; Rines et al. 2013, J/ApJ/767/15) and CIRS (Cluster Infall Regions in SDSS project; Rines & Diaferio 2006, J/AJ/132/1275) surveys and with data from the literature to construct a total sample of 123 clusters. We use SDSS photometry for all clusters. The HeCS is a spectroscopic survey of 58 galaxy clusters at moderate redshift (z=0.1-0.3) with MMT/Hectospec. HeCS includes all clusters with ROSAT X-ray fluxes of f_X>5x10-12erg/s at [0.5-2.0]keV from the Bright Cluster Survey (BCS; Ebeling et al. 1998, J/MNRAS/301/881) or REFLEX survey (Bohringer et al. 2004, J/A+A/425/367) with optical imaging in the sixth Data Release (DR6) of SDSS (Adelman-McCarthy et al. 2008, II/282; superseded by II/294). CIRS used spectroscopy from the fourth Data Release of SDSS. Table 3 lists 168 redshifts measured with the FAST instrument on the 1.5m Tillinghast telescope at the Fred Lawrence Whipple Observatory. The additional single-slit spectra from FAST reduce the incompleteness of bright (SDSS r<~16.5) galaxies in the HeCS-SZ clusters. (4 data files).

  6. Pioglitazone administration alters ovarian gene expression in aging obese lethal yellow mice

    PubMed Central

    Brannian, John D; Eyster, Kathleen M; Weber, Mitch; Diggins, Maureen

    2008-01-01

    Background Women with polycystic ovary syndrome (PCOS) are often treated with insulin-sensitizing agents, e.g. thiazolidinediones (TZD), which have been shown to reduce androgen levels and improved ovulatory function. Acting via peroxisome proliferator-activated receptor (PPAR) gamma, TZD alter the expression of a large variety of genes. Lethal yellow (LY; C57BL/6J Ay/a) mice, possessing a mutation (Ay) in the agouti gene locus, exhibit progressive obesity, reproductive dysfunction, and altered metabolic regulation similar to women with PCOS. The current study was designed to test the hypothesis that prolonged treatment of aging LY mice with the TZD, pioglitazone, alters the ovarian expression of genes that may impact reproduction. Methods Female LY mice received daily oral doses of either 0.01 mg pioglitazone (n = 4) or an equal volume of vehicle (DMSO; n = 4) for 8 weeks. At the end of treatment, ovaries were removed and DNA microarrays were used to analyze differential gene expression. Results Twenty-seven genes showed at least a two-fold difference in ovarian expression with pioglitazone treatment. These included leptin, angiopoietin, angiopoietin-like 4, Foxa3, PGE1 receptor, resistin-like molecule-alpha (RELM), and actin-related protein 6 homolog (ARP6). For most altered genes, pioglitazone changed levels of expression to those seen in untreated C57BL/6J(a/a) non-mutant lean mice. Conclusion TZD administration may influence ovarian function via numerous diverse mechanisms that may or may not be directly related to insulin/IGF signaling. PMID:18348723

  7. VizieR Online Data Catalog: Spitzer-CANDELS catalog within 5 deep fields (Ashby+, 2015)

    NASA Astrophysics Data System (ADS)

    Ashby, M. L. N.; Willner, S. P.; Fazio, G. G.; Dunlop, J. S.; Egami, E.; Faber, S. M.; Ferguson, H. C.; Grogin, N. A.; Hora, J. L.; Huang, J.-S.; Koekemoer, A. M.; Labbe, I.; Wang, Z.

    2015-08-01

    We chose to locate S-CANDELS inside the wider and shallower fields already covered by Spitzer Extended Deep Survey (SEDS), in regions that enjoy deep optical and NIR imaging from HST/CANDELS. These S-CANDELS fields are thus the Extended GOODS-south (aka the GEMS field, hereafter ECDFS; Rix et al. 2004ApJS..152..163R; Castellano et al. 2010A&A...511A..20C), the Extended GOODS-north (HDFN; Giavalisco et al. 2004, II/261; Wang et al. 2010, J/ApJS/187/251; Hathi et al. 2012ApJ...757...43H; Lin et al. 2012ApJ...756...71L), the UKIDSS UDS (aka the Subaru/XMM Deep Field, Ouchi et al. 2001ApJ...558L..83O; Lawrence et al. 2007, II/319), a narrow field within the EGS (Davis et al. 2007ApJ...660L...1D; Bielby et al. 2012A&A...545A..23B), and a strip within the UltraVista deep survey of the larger COSMOS field (Scoville et al. 2007ApJS..172...38S; McCracken et al. 2012, J/A+A/544/A156). The S-CANDELS observing strategy was designed to maximize the area covered to full depth within the CANDELS area. Each field was visited twice with six months separating the two visits. Table 1 lists the epochs for each field. All of the IRAC full-depth coverage is within the SEDS area (Ashby et al. 2013, J/ApJ/769/80), and almost all is within the area covered by HST for CANDELS. (6 data files).

  8. A Study to Estimate the Effectiveness of Visual Testing Training for Aviation Maintenance Management

    NASA Technical Reports Server (NTRS)

    Law, Lewis Lyle

    2007-01-01

    The Air Commerce Act of 1926 set the beginning for standards in aviation maintenance. Even after deregulation in the late l970s, maintenance standards and requirements still have not changed far from their initial criteria. After a potential candidate completes Federal Aviation Administration training prerequisites, they may test for their Airframe and Powerplant (A&P) certificate. Performing maintenance in the aviation industry for a minimum of three years, the technician may then test for their Inspection Authorization (IA). After receiving their Airframe and Powerplant certificate, a technician is said to have a license to perform. At no time within the three years to eligibility for Inspection Authorization are they required to attend higher-level inspection training. What a technician learns in the aviation maintenance industry is handed down from a seasoned technician to the new hire or is developed from lessons learned on the job. Only in Europe has the Joint Aviation Authorities (JAA) required higher-level training for their aviation maintenance technicians in order to control maintenance related accidents (Lu, 2005). Throughout the 1990s both the General Accounting Office (GAO) and the National Transportation Safety Board (NTSB) made public that the FAA is historically understaffed (GAO, 1996). In a safety recommendation the NTSB stated "The Safety Board continues to lack confidence in the FAA's commitment to provide effective quality assurance and safety oversight of the ATC system (NTSB, 1990)." The Federal Aviation Administration (FAA) has been known to be proactive in creating safer skies. With such reports you would suspect the FAA to also be proactive in developing more stringent inspection training for aviation maintenance technicians. The purpose of this study is to estimate the effectiveness of higher-level inspection training, such as Visual Testing (VT) for aviation maintenance technicians, to improve the safety of aircraft and to make

  9. VizieR Online Data Catalog: A Stellar Spectral Flux Library: 1150 - 25000 A (Pickles 1998)

    NASA Astrophysics Data System (ADS)

    Pickles, A. J.

    1998-09-01

    . fi (IUE) Heck et al. 1984, Cat. fg Gunn & Stryker 1983, Cat. fk Kiehling 1987, Cat. fj Jacoby, Hunter & Christian 1984, Cat. fs Silva & Cornell 1992, Cat. fp Pickles 1985, Cat. fn (N6522) Pickles & van der Kruit 1990 (1990A&AS...84..421P) fr fr1, fr2 Serote Roos, Boisson & Joly 1996, Cat. <J/A+AS/117/93> fd fdd1, fdd2; fd3, fd4 Danks & Dennefeld 1994 (1994PASP..106..382D) UVKLIB component codes Code Reference source fh spectrum from UVILIB fse interpolated spectrum based on standardized flux points fl Lancon & Rocca-Volmerange 1992, Cat. fd Dallier, Boisson & Joly 1996, Cat. <J/A+AS/116/239> fk Kleinmann & Hall 1986 (1986ApJS...62..501K) fc Cohen et al. (1995, 1996a, 1996b); Cat. , , fm Fluks et al. 1994, Cat. <J/A+AS/105/311> M giant spectra in UVKLIB include the synthetic M0-M10 MK type spectra from Fluks et. al. (1994), and are a combination of these and the UVILIB spectra in the range 1150-10620A. M0-M8 III are the only cases where the 1150-10500A data differ between UVILIB and UVKLIB. M9 and M10 III spectra are exclusively synthetic spectra from Fluks et. al. (1994) in both libraries. In addition to the spectrum library itself, synthetic photometry and selected local equivalent widths & magnitude indices are provided in tables synphot.dat and lew.dat. The standard infrared colors used to form the smooth energy curves used in UVKLIB spectra are listed in irstphot.dat. Further documentation details are available in the *.doc files as described below in the table notes in this ReadMe. (265 data files).

  10. Sécurité au-delà des mythes et des croyances

    ScienceCinema

    None

    2011-10-06

    Présentation orale en français, support visuel en français et en anglais. La pire des failles de sécurité est l'impression de sécurité. Le décalage entre la compréhension que l?on a des technologies utilisées, et leurs potentiels réels, ainsi que l'impact potentiellement négatif qu'elles peuvent avoir sur nos vies, n'est pas toujours compris, ou pris en compte par la plupart d'entre-nous. On se contente de nos perceptions pour ne pas avoir à se confronter à la réalité... Alors qu'en est-il vraiment ? En matière de sécurité qui de l'humain ou des technologies a le contrôle ?

  11. Construction of In-house Databases in a Corporation

    NASA Astrophysics Data System (ADS)

    Senoo, Tetsuo

    As computer technology, communication technology and others have progressed, many corporations are likely to locate constructing and utilizing their own databases at the center of the information activities, and aim at developing their information activities newly. This paper considers how information management in a corporation is affected under changing management and technology environments, and clarifies and generalizes what in-house databases should be constructed and utilized from the viewpoints of requirements to be furnished, types and forms of information to be dealt, indexing, use type and frequency, evaluation method and so on. The author outlines an information system of Matsushita called MATIS (Matsushita Technical Information System) as an actual example, and describes the present status and some points to be reminded in constructing and utilizing databases of REP, BOOK and SYMP.

  12. Que peut-on voir avec des neutrons? Une introduction pour des non spécialistes

    NASA Astrophysics Data System (ADS)

    Schweizer, J.

    2005-11-01

    Le neutron est une particule élémentaire qui a été découverte en 1932 par James Chadwick. Ses caractéristiques principales sont résumées dans le tableau I. Il a été utilisé pour la première fois par Clifford Shull en 1946 comme outil pour des expériences de diffusion. Cette technique s'est depuis constamment développée pour concerner tous les aspects de la matière condensée: physique, chimie, matériaux, biologie. Il s'agit d'un outil tout à fait exceptionnel car le neutron possède des propriétés uniques et particulièrement adaptées pour ces études.

  13. Hybrid Multifoil Aerogel Thermal Insulation

    NASA Technical Reports Server (NTRS)

    Sakamoto, Jeffrey; Paik, Jong-Ah; Jones, Steven; Nesmith, Bill

    2008-01-01

    This innovation blends the merits of multifoil insulation (MFI) with aerogel-based insulation to develop a highly versatile, ultra-low thermally conductive material called hybrid multifoil aerogel thermal insulation (HyMATI). The density of the opacified aerogel is 240 mg/cm3 and has thermal conductivity in the 20 mW/mK range in high vacuum and 25 mW/mK in 1 atmosphere of gas (such as argon) up to 800 C. It is stable up to 1,000 C. This is equal to commercially available high-temperature thermal insulation. The thermal conductivity of the aerogel is 36 percent lower compared to several commercially available insulations when tested in 1 atmosphere of argon gas up to 800 C.

  14. 25th Birthday Cern- Restaurant

    ScienceCinema

    None

    2011-04-25

    Cérémonie du 25ème anniversaire du Cern avec plusieurs orateurs et la présence de nombreux autorités cantonales et communales genevoises et personnalités, directeurs généraux, ministres, chercheurs.... Le conseiller féderal et chef du département des affaires étrangères de la confédération Monsieur Pierre Aubert prend la parole pour célébrer à la fois les résultats très remarquables de la coopération internationale en matière scientifique, mais aussi la volonté politique des états européens de mettre en commun leurs ressources pour faire oeuvre d'avenir. Un grand hommage est aussi donné aux deux directeurs disparus, les prof.Bakker et Gregory.

  15. Mass analyzed threshold ionization of phenolṡCO: Intermolecular binding energies of a hydrogen-bonded complex

    NASA Astrophysics Data System (ADS)

    Haines, Stephen R.; Dessent, Caroline E. H.; Müller-Dethlefs, Klaus

    1999-08-01

    [PhenolṡCO]+ was studied using a combination of two-color resonant zero kinetic energy (ZEKE) spectroscopy and mass analyzed threshold ionization (MATI) spectroscopy to investigate the interaction of the CO ligand with a hydrogen-bonding cation. Vibrational progressions were observed in three intermolecular modes, the in-plane bend (42 cm-1), stretch (130 cm-1), and in-plane wag (160 cm-1), and are consistent with a planar hydrogen-bonded structure where the CO bonds through the carbon atom to the phenol OH group. Dissociation energies for the S0, S1, and D0 states were determined as 659±20, 849±20, and 2425±10 cm-1, respectively. The cationic and neutral dissociation energies of the phenolṡCO complex are considerably stronger than those of phenolṡN2, demonstrating the extent to which the larger quadrupole of CO affects the strength of binding.

  16. Structures and vibrations of neutral and cationic 3- and 4-aminophenol

    NASA Astrophysics Data System (ADS)

    Unterberg, C.; Gerlach, A.; Jansen, A.; Gerhards, M.

    2004-10-01

    A combined experimental and theoretical study on the structures and vibrations of 3- and 4-aminophenol in their neutral and ionic ground states is presented. The vibrations of the two possible isomers of 3-aminophenol and the one isomer of 4-aminophenol are investigated by mass analyzed threshold ionization (MATI) spectroscopy in the ionic ground state and by infrared resonant 2-photon ionization (IR/R2PI) spectroscopy in the neutral ground state. The experimentally observed vibrational frequencies of all isomers are in excellent agreement with the calculated values obtained by density functional theory (DFT) and at the complete active space self-consistent field (CASSCF) level of theory. The calculations support the assignment of different isomers. Furthermore, the experimentally observed ionization potentials are well predicted by CASMP2//CASSCF calculations.

  17. Threshold ionization spectroscopic investigation of supersonic jet-cooled, laser-desorbed Tryptophan

    NASA Astrophysics Data System (ADS)

    Taherkhani, Mehran; Armentano, Antonio; Černý, Jiří; Müller-Dethlefs, Klaus

    2016-07-01

    Tryptophan (Trp) was studied by two-colour Photoionization Efficiency (PIE) and Mass Analysed Threshold Ionization (MATI) spectroscopy using a laser desorption apparatus. Conformer A of Trp was excited into the S1 state (34,878 cm-1) and the second laser was scanned around the D0 cation ground and the D1 excited state. No ionization signal into the D0 state could be found, but a clear threshold was observed for the D1 state with an ionization energy of 66,704 ± 3 cm-1 (8.27 eV). This observation is explained in terms of the electronic configurations of the S1 and cationic states.

  18. Les considérations éthiques relatives à la désadoption d'aspects inefficaces ou nuisibles des soins de santé.

    PubMed

    Niven, Daniel J; Leigh, Jeanna Parsons; Stelfox, Henry T

    2016-09-01

    La désadoption désigne l'abandon d'une pratique médicale ou d'un service de santé inefficace ou nuisible après une période d'adoption. Tandis que les dépenses croissantes en matière de santé menacent de paralyser les sociétés qui les financent, le fait de faciliter la désadoption peut faire partie intégrante de systèmes de santé durables qui prodiguent des soins de qualité. Le présent article explore des enjeux éthiques qui se rapportent à la désadoption, y compris les principes sous-jacents de bénéficience, de non-maléficience, de justice et d'autonomie. PMID:27576859

  19. Threshold ionization, structural isomers, and electronic states of M{sub 2}O{sub 2} (M = Sc, Y, and La)

    SciTech Connect

    Wu, Lu; Zhang, Changhua; Krasnokutski, Serge A.; Yang, Dong-Sheng

    2014-06-14

    M{sub 2}O{sub 2} (M = Sc, Y, and La) were synthesized in a pulsed laser-vaporization molecular beam source and studied by mass-analyzed threshold ionization (MATI) spectroscopy and ab initio calculations. Adiabatic ionization energies (AIEs) and several vibrational frequencies were measured accurately for the first time from the MATI spectra. Six possible structural isomers of M{sub 2}O{sub 2} were considered in the calculations and the three converged structures were used in the spectral analysis. A planar cyclic structure in D{sub 2h} point group was predicted to be the most stable one by the theory and observed by the experiment. The cyclic structure is formed by joining two MO{sub 2} fragments together through two shared oxygen atoms. In forming the ground state clusters, each metal atom loses two (n − 1)d electrons and as a result, has only one ns electron in the metal-based valence orbital. The ground electronic state of Sc{sub 2}O{sub 2} is {sup 1}A{sub g}, and those of Y{sub 2}O{sub 2} and La{sub 2}O{sub 2} are {sup 3}B{sub 1u}. Ionization of both {sup 1}A{sub g} and {sup 3}B{sub 1u} neutral states yields the {sup 2}A{sub g} ion state by removing one of the two ns electrons, and the resultant ion has a similar geometry to the neutral cluster. The AIEs of the clusters are 5.5752 (6), 5.2639 (6), 4.5795 (6) eV for M = Sc, Y, and La, respectively. The vibrational frequencies of the observed modes, including O-M and M-M stretches, are in the range of 200–800 cm{sup −1}.

  20. C-O and O-H Bond Activation of Methanole by Lanthanum

    NASA Astrophysics Data System (ADS)

    Silva, Ruchira; Hewage, Dilrukshi; Yang, Dong-Sheng

    2012-06-01

    The interaction between methanol (CH_3OH) molecules and laser-vaporized La atoms resulted in the cleavage of C-O and O-H bonds and the formation of three major products, LaH_2O_2, LaCH_4O_2 and LaC_2H_6O_2, in a supersonic molecular beam. These products were identified by time-of-flight mass spectrometry, and their electronic spectra were obtained using mass-analyzed threshold ionization (MATI) spectroscopy. From the MATI spectra, adiabatic ionization energies of the three complexes were measured to be 40136 (5), 39366 (5) and 38685 (5) cm-1 for LaH_2O_2, LaCH_4O_2 and LaC_2H_6O_2, respectively. The ionization energies of these complexes decrease as the size of the coordinated organic fragments increases. The most active vibrational transitions of all three complexes were observed to be the M-O stretches in the ionic state. A metal-ligand bending mode with a frequency of 127 cm-1 was also observed for [LaH_2O_2]^+. However, the spectra of the other two complexes were less resolved, due to the existence of a large number of low frequency modes, which could be thermally excited even in the supersonic molecular beams, and of multiple rotational isomers formed by the free rotation of the methyl group in these systems. The electronic transitions responsible for the observed spectra were identified as ^1A_1 (C2v) ← ^2A_1 (C2v) for LaH_2O_2 and ^1A (C_1) ← ^2A (C_1) for LaCH_4O_2 and LaC_2H_6O_2.

  1. Nonresonant two-photon mass analyzed threshold ionization and zero kinetic energy photoelectron investigation of the X˜ 2B1 ground state of CH2CO+ and CD2CO+

    NASA Astrophysics Data System (ADS)

    Wang, Shiliang; Shi, Yujun; Jakubek, Zygmunt J.; Barnett, Michael; Simard, Benoit; Müller-Dethlefs, Klaus; Liu, Ching-Ping; Lee, Yuan-Pern

    2002-10-01

    Rotationally resolved nonresonant two-photon mass analyzed threshold ionization (MATI) and zero kinetic energy (ZEKE) photoelectron spectra of CH2CO+ and CD2CO+ are reported. The spectra are dominated by the origin band and totally symmetric a1 vibrations, ν4 (C=C symmetric stretch) and ν2 (C=O asymmetric stretch) for CH2CO+, and ν1 (C=O asymmetric stretch), ν3 (C=C symmetric stretch), and ν4 (CD2 scissor) for CD2CO+. In addition, several weaker bands are observed in the MATI spectra: ν3 (CH2 scissor) in CH2CO+; b1 vibrations ν5 and ν6 (C=C=O linear bend and CH2 wag) in both isotopomers; b2 vibration ν8 (CD2 rock) for CD2CO+; b2 vibration ν9 (C=C=O linear bend) for CH2CO+; as well as overtones and combination bands. Rotational structure of the origin band is dominated by three very strong ΔKa=±1 bands with 2 orders of magnitude weaker ΔKa=+3 bands. A similar ΔKa=±1 three-band pattern is observed for the a1 vibrational modes. For the b1 modes a single-band pattern resulting from the ΔKa=0 selection rule is present. Fundamental wave numbers for six vibrational modes of CH2CO+ and seven modes of CD2CO+ are determined. Rotational analysis of the partially resolved ZEKE spectra yields the ionization potentials (77539.4±2.0 cm-1 for CH2CO and 77534.3±2.0 cm-1 for CD2CO) and rotational constants for the ground states of both ketene cations.

  2. Do infants perceive word boundaries? An empirical study of the bootstrapping of lexical acquisition.

    PubMed

    Christophe, A; Dupoux, E; Bertoncini, J; Mehler, J

    1994-03-01

    Babies, like adults, hear mostly continuous speech. Unlike adults, however, they are not acquainted with the words that constitute the utterances; yet in order to construct representations for words, they have to retrieve them from the speech wave. Given the apparent lack of obvious cues to word boundaries (such as pauses between words), this is not a trivial problem. Among the several mechanisms that could be explored to solve this bootstrapping problem for lexical acquisition, a tentative but reasonable one posits the existence of some cues (other than silence) that signal word boundaries. In order to test this hypothesis, infants were used as informants in our experiments. It was hypothesized that if word boundary cues exist, and if infants are to use them in the course of language acquisition, then they should at least perceive these cues. As a consequence, infants should be able to discriminate sequences that contain a word boundary from those that do not. A number of bisyllabic stimuli were extracted either from within French words (e.g., mati in mathématicien), or from between words (e.g., mati in panorama typique). Three-day-old infants were tested with a non-nutritive sucking paradigm, and the results of two experiments suggest that infants can discriminate between items that contain a word boundary and items that do not. It is therefore conceivable that newborns are already sensitive to cues that correlate with word boundaries. This result lends plausibility to the hypothesis that infants might use word boundary cues during lexical acquisition. PMID:8176060

  3. Human impact on the coastal area of Ishem -Shengjin

    NASA Astrophysics Data System (ADS)

    Dollma, Merita

    2010-05-01

    Human impact on the coastal area of Ishem -Shengjin This paper is about the natural and human factors role impact on the geomorphology of the coastal area of Ishem -Shengjin. The morphotectonic and morphologic evolution of this zone is closely connected to the Adriatic sea and Mat, Ishem rivers activities. An important role in this evolution has also played the tectonic faults, where Mat and Ishem rivers flow. River delta advancing in this zone, besides the littoral cordons, is connected to the river solid loads (about 5380 ton/km2), which manage to compensate the continuous tectonic subsidents of its structural basement. The presence of the lagoons (Patok, Merxhan, Ceka), dead meanders and marshlands along a distance of 2-4 km of this zone, are the evidences of continues morphologic evolution of the present coastline, especially between these two rivers. The higher tectonic subsident values of the basement along Mat fault have also defined the smaller size of the alluvial field of this river compare to the alluvial field created by Ishem river. This tectonic phenomena is evidenced with the different thickness of the quaternary depositions along the Ishem river sector (30-80m) and along Mati river (250-290 m). Human impact on the geomorphologic evolution of this zone has caused the total destruction of Patok beach, due to the deviation of the Ishem river flow to the lagoon of Patok. The creation of the artificial reservoirs along Mat river (Ulez, Shkopet) and Ishem river (Bovilla), besides the extraction of the river inert materials along Mati riverbed and destruction of the river banks concretes, have decreased the solid river load. This has caused the beginning of the erosion process of the coastline in some sectors of this zone. Consequently the damages on the natural environment of this zone caused by the human impact are severe and their rehabilitation and management needs an integrated approach from different actors.

  4. Isotopic assessment of the recharge of a coastal aquifer in N. Albania

    NASA Astrophysics Data System (ADS)

    Jacks, Gunnar; Kumanova, Xhume; Marku, Sonila

    2013-04-01

    The River Mati coastal plain aquifers serve as a groundwater source for about 250 000 people. A major concern is the rate of recharge from an alluvial fan at the entry of River Mati into the coastal plain. The investigation revealed brackish groundwater close to the Adriatic coast. However, the groundwater was artesian indicating the sea water intrusion is not currently a threat. As per ^18O analysis this water was not a mix of old sea water but had the signature of the river water. The salinity is likely to be derived by diffusion from intercalated clay layers. 14C dating of the water showed ages of the most brackish water up to 7 000 years. Upstream there are a large number of active and abandoned copper mines and about 10 M ton of waste rock from these mines. The ^34S in the river water was close to the value for sulphides in this waste rock. Also the groundwater showed values close to that of the river. Only the brackish groundwater close to the sea shore had a sea water signature, probably derived from sulphate diffusion from the above mentioned clay layers. Thus currently the groundwater extracted in a large well-field for the Durres town is more or less completely fed by recharge from the river. Large scale sand and gravel extraction in the alluvial cone is a threat to this recharge, lowering the head for flow and also presenting a risk for pollution by oil and fuel from the vehicles used for the sand and gravel extraction. It is recommended that a number of the artesian wells close to the Adriatic coast are monitored regarding the head above ground level.

  5. VizieR Online Data Catalog: NGC 2264, NGC 2547 and NGC 2516 stellar radii (Jackson+, 2016)

    NASA Astrophysics Data System (ADS)

    Jackson, R. J.; Jeffries, R. D.; Randich, S.; Bragaglia, A.; Carraro, G.; Costado, M. T.; Flaccomio, E.; Lanzafame; Lardo, C.; Monaco, L.; Morbidelli, L.; Smiljanic, R.; Zaggia, S.

    2015-11-01

    File Table1.dat contains Photometric and spectroscopic data of GES Survey targets in clusters in NGC 2547, NGC 2516, NGC 22264 downloaded from the Edinburugh GES archive (http://ges/roe.ac.uk/) . Photometric data comprised the (Cousins) I magnitude and 2MASS J, H and K magnitudes. Spectroscopic data comprises the signal to noise ratio, S/N of the target spectrum, the radial velocity, RV (in km/s), the projected equatorial velocity, vsini (in km/s), the number of separate observations co-added to produce the target spectrum and the log of effective temperature (logTeff) of the template spectrum fitted to measure RV and vsini. The absolute precision in RV, pRV (in km/s) and relative precision vsini (pvsini) were estimated, as a function of the logTeff, vsini and S/N, using the prescription described in Jackson et al. (2015A&A...580A..75J, Cat. J/A+A/580/A75). File Table3.dat contains measured and calculated properties of cluster targets with resolved vsini and a reported rotation period. The cluster name, right ascension, RA (deg) and declination, Dec (deg) are given for targets with measured periods given in the literature. Dynamic properties comprise: the radial velocity, RV (in km/s), the absolute precision in RV, pRV (km/s), the projected equatorial velocity, vsini (in km/s), the relative precision in vsini (pvsini) and the rotational period (in days). Also shown are values of absolute K magnitude, MK log of luminosity, log L (in solar units) and probability of cluster membership estimated using cluster data given in the text. Period shows reported values of cluster taken from the literature Estimated values of the projected radius, Rsini (in Rsolar) and uncertainty in projected radius, e_Rsini (in Rsolar) are given for targets where vsini>5km/s and pvsini>0.2. The final column shows a flag which is set to 1 for targets in cluster NGC 2264 where a (H-K) versus (J-H) colour-colour plot indicates possible infra-red excess. Period shows reported values of cluster

  6. VizieR Online Data Catalog: Chandra Deep Field South: multi-colour data (Wolf+, 2008)

    NASA Astrophysics Data System (ADS)

    Wolf, C.; Meisenheimer, K.; Kleinheinrich, M.; Borch, A.; Dye, S.; Gray, M.; Wisotzki, L.; Bell, E. F.; Rix, H.-W.; Cimatti, A.; Hasinger, G.; Szokoly, G.

    2004-04-01

    Table 3 contains the object catalogue of the COMBO-17 CDFS field. The observations were carried out with the Wide Field Imager (WFI) at the MPG/ESO 2.2-m telescope on La Silla, Chile, between October 1999 and January 2001 in four independent observing runs. The field measures 31.5'x30', is centered on RA=03:32:25, DE=-27:48:50 and contains the Chandra Deep Field South. The table contains 63501 objects found on the deep R-band image cdfs_r.fit by SExtractor with S/N>3. The 5-{sigma} magnitude limit for point sources is Rmag=26.0. Morphological information from the SExtractor measurement is included. Multiple observations in different observing runs of six different filters allow the identification of variable objects. The table contains positions, flags and flux measurements in UBVRI and 12 optical medium-band filters. In addition, we include multi-colour classification, photometric redshifts, luminosity distances and a number of absolute restframe magnitudes in different filters (Johnson, Sloan, Bessell). cdfsu.fit, cdfsb.fit, cdfsv.fit, cdfsr.fit and cdfs_i.fit are coadded sumframes in UBVRI of the CDFS field. These sumframes are stacked from flat-fielded and cosmic-corrected individual images by applying only full pixel shifts. Therefore, the coordinate frames differ slightly between the images. The coordinates in Table 3 refer to image cdfs_r.fit. The images in BVRI are obtained from observations carried out in observing run D (Oct 1999, see also Note (11) in the byte-by-byte description of table3.dat) while the U-band image is obtained from observing run G (Jan 2001). The exposure times are 14400s (U), 5000s (B), 8400s (V), 15000s (R) and 7550s (I). The intensity levels are given in units of photons hitting the detector (already corrected for the gain of the CCD). The data included here supersede the table2.dat of the COMBO-17 published in 2001 (J/A+A/377/442) (6 data files).

  7. Patterns and drivers of Early Holocene vegetation dynamics in Central Europe

    NASA Astrophysics Data System (ADS)

    Theuerkauf, Martin

    2015-04-01

    early-Holocene migration and high abundance of hazel (Corylus avellana L.): alternative hypotheses. Climate change and human impact on the landscape (ed. by F.M. Chambers), pp. 205-215. Chapman and Hall, London. Theuerkauf M., Bos J.A.A., Jahns S., Janke W., Kuparinen A., Stebich M., & Joosten H. (2014) Corylus expansion and persistent openness in the early Holocene vegetation of northern central Europe. Quaternary Science Reviews, 90, 183-198.

  8. U-Pb Dating of CA/non-CA Treated Zircons Obtained by LA-ICP-MS and CA-TIMS Techniques: Impact for their Geological Interpretation

    NASA Astrophysics Data System (ADS)

    Von Quadt, A.; Gallhofer, D.; Guillong, M.; Peytcheva, I.

    2014-12-01

    Chemical Abrasion Isotope-Dilution Thermal Ionization Mass Spectrometry (CA-ID-TIMS) is known as a high precision technique for resolving lead loss and improving the interpretation of U-Pb zircon age data. We argue that combining CA with the widely applied Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) improves the precision and accuracy of zircon dates, while removing the substantial parts with lead loss, reducing data scatter, and providing meaningful geological interpretations. The samples are magmatic rocks chosen from different geological time periods (Paleozoic, Mesozoic and Cenozoic time). All zircon separates are analysed by LA-ICP-MS before and after CA, and all age data are compared with CA-ID-TIMS 206Pb/238U dates that are considered as the most accurately age. All CA-treated zircon crystals show up to 50% less data scatter compared to the non-CA treated zircon grains and thus a reduction of the calculated uncertainties is apparent. The obtained wt average LA-ICP-MS 206Pb/238U ages of the CA-treated zircon grains are up to 4-6% higher than those of the non-CA treated crystals, exceeding the analytical uncertainties of the LA-ICP-MS dating technique of 1-2%. The damaged crystal parts, caused by U-decay, with lead loss are removed, so that we can exclude younging from the possible geological scenarios. CA-LA-ICP-MS age data are in good agreement with the CA-ID-TIMS dates and suggest advantages of using CA-LA-ICP-MS in order to define accurate ages. The use of the CA technique for very young zircons (~0.2 Ma, Kos rhyolitic tuff, Greece) seems optional; as the obtained mean 206Pb/238U ages of non-CA and CA treated zircons coincide within the uncertainty. The negligible time to produce the lattice damage (based on alpha decay or spontaneous fission) makes lead loss less important for age dating and data interpretation of very young zircons (<1 Ma). Von Quadt, A. et al., 2014, JAAS, doi: 10.1039/c4ja00102h.

  9. New calibration standard for LA-ICPMS analysis of sulphides

    NASA Astrophysics Data System (ADS)

    Belousov, I.; Danyushevsky, L. V.; Olin, P. H.; Gilbert, S.; Thompson, J. M.

    2014-12-01

    Currently available calibration standards for LA-ICPMS analysis for a wide range of trace elements in sulphide minerals include hydrothermally-precipitated Fe-Cu-Zn-S powder doped with trace metals MASS-1 [1] and Li borate glass STDGL-2 [2]. Both of them are not ideal due to a limited range of elements they contain and/or non-homogenous distribution and low concentrations of elements. MASS-1 suffers from a limited range of elements and poor homogeneity, whereas STDGL-2 has low and/or unevenly distributed volatile elements and precious metals (e.g. Se, Te, Tl, Pt, Au). In order to produce a better calibration standard, we have experimented with fusing sulphide mineral mixes in a variety of borate-based fluxes. A range of flux compositions, heating and cooling regimes and times at high temperatures have been tested in order to produce a homogeneous glass disk with an appropriate proportion of sulphide, while retaining volatile elements. Best results were achieved with using Li tetraborate as a flux with Na nitrate as an oxidizing agent by fusing with an LPG fluxer (M4 by Claisse). Selenium, tellurium and tin were added in the elemental form, whereas thallium was added as carbonate (Tl2CO3). A range of elements was added to provide capability for detecting known common interferences on chalcophile and siderophile elements (e.g. Gd, Hf, Ta, W, Zr, Sr). New standard glass STDGL-3 contains homogeneously distributed volatile elements (Se, Te, Tl, Sn) and precious metals (Au, Pt). A larger proportion of volatile elements was retained (100% Ge, 80% Re, 70% Te, 60% Sn, 20% Tl, 20% Se). Most problematic elements turned out to be Se and Tl, which volatilize together through a network of narrow zones, and Pt and Au, which form micro inclusions. Suitability of the new standard for LA-ICPMS analysis of sulphide minerals for trace element concentrations and Pb isotopes will be demonstrated. [1] Wilson et al., 2002. JAAS, v.17, pp.406-409[2] Danyushevsky et al., 2011. GEEA,. v.11

  10. Qualité des eaux de la station de traitement de la ville de Skikda, Algérie Essais d'optimisation de la clarification

    NASA Astrophysics Data System (ADS)

    Meghzili, B.; Medjram, M. S.; Achour, S.

    2005-05-01

    A cause de la sécheresse qui a sévit durant une décennie, la station de traitement de l'eau potable de la ville de Skikda Algérie, en vue de combler le déficit en eau, utilise un mélange des eaux de surface (barrage) et des eaux souterraines (forage). Les résultats des analyses physico-chimiques de ces eaux montrent la présence de micropolluants, notamment le mercure, avec une concentration de 0.035 mg/l pour les eaux de surface et une concentration de 0.02 mg/l pour les eaux souterraines. Ces résultats obtenus, montrent également que la concentration en matières organiques dépasse, pour les deux sources, les normes OMS. Afin de réduire les effets de cette pollution, nous avons calculé les doses nécessaires des différents réactifs utilisés sur la base des essais d'optimisation réalisés en laboratoire. Les résultats obtenus nous ont permis de conclure que les doses de 30 à 60 mg/l de sulfate d'aluminium (S.A) sont nécessaires à une bonne élimination de la turbidité et des matières organiques (M.O) et que l'utilisation du charbon active en poudre (C.A.P) permet la réduction de la teneur en mercure au dessous du seuil admissible. L'utilisation d'un adjuvant (chaux vive) permet d'améliorer les résultats surtout pour la turbidité (4 mg/l). Une préchloration au break point semble intéressante pour améliorer la phase de floculation.

  11. Full dimensional quantum-mechanical simulations for the vibronic dynamics of difluorobenzene radical cation isomers using the multilayer multiconfiguration time-dependent Hartree method

    NASA Astrophysics Data System (ADS)

    Meng, Qingyong; Faraji, Shirin; Vendrell, Oriol; Meyer, Hans-Dieter

    2012-10-01

    Full dimensional multilayer multiconfiguration time-dependent Hartree (ML-MCTDH) calculations of the dynamics of the three difluorobenzene cationic isomers in five lowest-lying doublet electronic states using the ab initio multistate multimode vibronic coupling Hamiltonian (MMVCH) model are carried out using the Heidelberg MCTDH package. The same dynamical problems, but treated with the MCTDH scheme and using a reduced dimensional ab initio MMVCH model, have been previously reported [S. Faraji, H.-D. Meyer, and H. Köppel, "Multistate vibronic interactions in difluorobenzene radical cations. II Quantum dynamical simulations," J. Chem. Phys. 129, 074311 (2008), 10.1063/1.2958918]. For easy comparison with the reduced dimensional results, 11D or 10D ML-MCTDH calculations are also performed. Extensive ML-MCTDH test calculations are performed to find appropriate ML-MCTDH wavefunction structures (ML-trees), and the convergence of the ML-MCTDH calculations are carefully checked to ensure accurate results. Based on the appropriate ML-trees, the photoelectron (PE) spectrum and the mass analyzed threshold ionization (MATI) spectrum are simulated, analyzed, and compared with corresponding experimental spectra. Because of its efficient simulation capability for large systems, ML-MCTDH calculations save a considerable amount of central processing unit (CPU)-time, even when a reduced dimensional MMVCH is used, i.e., the same reduced model as in the corresponding MCTDH calculations. Simulations of the experimental PE spectra by full dimensional ML-MCTDH calculations reproduced main peaks, which originate from different electronic states. The agreement is improved as compared to the reduced dimensionality calculations. Unfortunately, the experimental PE spectra are not very well resolved. Therefore, we compare our calculations additionally with highly resolved MATI spectra, which, however, are only available for the tilde{X} state. Based on a series of ML-MCTDH simulations with

  12. Full dimensional quantum-mechanical simulations for the vibronic dynamics of difluorobenzene radical cation isomers using the multilayer multiconfiguration time-dependent Hartree method.

    PubMed

    Meng, Qingyong; Faraji, Shirin; Vendrell, Oriol; Meyer, Hans-Dieter

    2012-10-01

    Full dimensional multilayer multiconfiguration time-dependent Hartree (ML-MCTDH) calculations of the dynamics of the three difluorobenzene cationic isomers in five lowest-lying doublet electronic states using the ab initio multistate multimode vibronic coupling Hamiltonian (MMVCH) model are carried out using the Heidelberg MCTDH package. The same dynamical problems, but treated with the MCTDH scheme and using a reduced dimensional ab initio MMVCH model, have been previously reported [S. Faraji, H.-D. Meyer, and H. Köppel, "Multistate vibronic interactions in difluorobenzene radical cations. II Quantum dynamical simulations," J. Chem. Phys. 129, 074311 (2008)]. For easy comparison with the reduced dimensional results, 11D or 10D ML-MCTDH calculations are also performed. Extensive ML-MCTDH test calculations are performed to find appropriate ML-MCTDH wavefunction structures (ML-trees), and the convergence of the ML-MCTDH calculations are carefully checked to ensure accurate results. Based on the appropriate ML-trees, the photoelectron (PE) spectrum and the mass analyzed threshold ionization (MATI) spectrum are simulated, analyzed, and compared with corresponding experimental spectra. Because of its efficient simulation capability for large systems, ML-MCTDH calculations save a considerable amount of central processing unit (CPU)-time, even when a reduced dimensional MMVCH is used, i.e., the same reduced model as in the corresponding MCTDH calculations. Simulations of the experimental PE spectra by full dimensional ML-MCTDH calculations reproduced main peaks, which originate from different electronic states. The agreement is improved as compared to the reduced dimensionality calculations. Unfortunately, the experimental PE spectra are not very well resolved. Therefore, we compare our calculations additionally with highly resolved MATI spectra, which, however, are only available for the X̃ state. Based on a series of ML-MCTDH simulations with longer propagation time

  13. VizieR Online Data Catalog: Analytical model for irradiated atmospheres (Parmentier+, 2015)

    NASA Astrophysics Data System (ADS)

    Parmentier, V.; Guillot, T.; Fortney, J.; Marley, M.

    2014-11-01

    The model has six parameters to describe the opacities: - {kappa}(N) is the Rosseland mean opacity at each levels of the atmosphere it does not have to be constant with depth. - Gp is the ratio of the thermal Plank mean opacity to the thermal Rosseland mean opacity. - Beta is the width ratio of the two thermal bands in the frequency space. - Gv1 is the ratio of the visible opacity in the first visible band to the thermal Rosseland mean opacity - Gv2 is the ratio of the visible opacity in the second visible band to the thermal Rosseland mean opacity - Gv3 is the ratio of the visible opacity in the second visible band to the thermal Rosseland mean opacity Each visible band has a fixed width of 1/3. Additional parameters describe the physical setting: - Teq0 is the equilibrium temperature of the planet for 0 albedo and full redistribution of energy. - mu is the angle between the vertical direction and the stellar direction. For average profiles set mu=1/sqrt(3) - f is a parameter equal to 0.5 to compute a dayside average profile and 0.25 for planet average profile. - Tint is the internal temperature, given by the internal luminosity - grav is the gravity of the planet - Ab is the Bond albedo of the planet - P(i) are the pressure levels where the temperature is computed. - N is the number of atmospheric levels. Several options are available in order to use the coefficients derived in Parmentier et al. (2014A&A...562A.133P, Cat. J/A+A/562/A133): ROSS can take the values : - "USER" for a Rosseland mean opacity set by the user {kappa}(nlevels) through the atmosphere. - "AUTO" in order to use {kappa}(P,T), the functional form of the Rosseland mean opacities provided by Valencia et al. (2013ApJ...775...10V) and based on the opacities calculated by Freedman et al. (2008ApJS..174..504F). The value of {kappa} is then recalculated and the initial value set by the user is NOT taken into account. COEFF can take the values : - "USER" for coefficients set by the user - "AUTO" for

  14. Overview of intestinal parasitic prevalence in rural and urban population in Lucknow, north India.

    PubMed

    Nitin, Shukla; Venkatesh, V; Husain, N; Masood, J; Agarwal, G G

    2007-12-01

    Intestinal parasitic infestations are a common finding in the developing world, however, the patterns of parasitic distribution and rates are different everywhere. Intestinal parasitic prevalece in urban and rural areas in Lucknow, Uttar Pradesh were determined in this community-based study. Multistage random sampling was adopted to collect stool samples from urban and rural population in Lucknow district. Door to door survey was done. Stool samples were processed by standard methods for parasitological examination. One thousand and seventy one stool samples were collected from urban Alambagh, (n=648) and rural Mati, (n=343) areas. Overall one hundred and twenty three (11.5%) subjects had intestinal infection. Intestinal infestation rate was 5.4% and 20.8% in the urban and rural areas respectively. Giardia lamblia (22%) was the commonest pathogenic protozoan detected. The soil transmitted helminths detected were Ascaris (11.4%) and Hookworm (2.4%). Infection had no predilection for either sex or age group in both areas. The prevalence of parasitic infection appears to be relatively low in this region, probably due to improving access to health care. However due to the sheer numbers of affected individuals involved, intestinal parasitosis remains an important public health problem. PMID:18697590

  15. Nova Sagittarii 2014 = PNV J18250860-2236024 AND Erratum

    NASA Astrophysics Data System (ADS)

    Waagen, Elizabeth O.

    2014-02-01

    Details of discovery of Nova Sagittarii 2014 (PNV J18250860-2236024) and procedures for observing and reporting observations are announced. Discovered by Sigeru Furuyama (Tone-machi, Ibaraki-ken, Japan) andreported by S. Nakano (Sumoto, Japan) at unfiltered CCD magnitude 8.7 on 2014 Jan. 26.857 UT. Coordinates: R.A. 18 25 08.60 Decl. = -22 36 02.4 (2000.0). Nova Sgr 2014 is Fe II-type classical nova past maximum, per low-resolution spectra obtained by A. Arai on 2014 Jan. 30.87 UT. Announced in IAU CBAT CBET 3802 (D. W. E. Green, ed.). Finder charts with sequence may be created using the AAVSO Variable Star Plotter (http://www.aavso.org/vsp). Observations should be submitted to the AAVSO International Database. See full Alert Notice for more details and observations. Also, an Erratum is reported. In AAVSO Alert Notice 496, Mati Morel (MMAT, Thornton, NSW, Australia) was credited with the discovery of the 1989 outburst of V745 Sco. The discoverer was William Liller (LIW, Vina del Mar, Chile), who observed V745 Sco on 1989 July 30.08 UT at magnitude 9.7 (PROBLICOM discovery using 2415 film with orange filter).

  16. Regles de fusion en theorie des champs conformes

    NASA Astrophysics Data System (ADS)

    Begin, Luc

    1999-10-01

    Les théories de champs conformes constituent un domaine de recherche très actif avec de nombreuses applications en physique statistique, en matière condensée, en théorie des cordes, en mathématiques, etc. Nous analysons ici le calcul des règles de fusion dans les modèles Wess- Zumino-Witten par des méthodes positives. Les règles de fusion sont des quantités importantes puisqu'elles indiquent comment se combinent les champs primaires de la théorie. L'approche présentée est basée sur l'hypothèse que les règles de fusion sont décrites par un système d'inéquations linéaire et homogène et mène au concept original de «base de fusion». Cette approche simple et générale permet d'utiliser les méthodes combinatoires et de programmation linéaire pour construire les fonctions génératrices et les bases de fusion. Cette méthode permet d'obtenir des résultats originaux et explicites pour les algèbres su (3), su (4) et sp (4).

  17. Overcoming the Challenges of Implementing a Multi-Mission Distributed Workflow System

    NASA Technical Reports Server (NTRS)

    Sayfi, Elias; Cheng, Cecilia; Lee, Hyun; Patel, Rajesh; Takagi, Atsuya; Yu, Dan

    2009-01-01

    A multi-mission approach to solving the same problems for various projects is enticing. However, the multi-mission approach leads to the need to develop a configurable, adaptable and distributed system to meet unique project requirements. That, in turn, leads to a set of challenges varying from handling synchronization issues to coming up with a smart design that allows the "unknowns" to be decided later. This paper discusses the challenges that the Multi-mission Automated Task Invocation Subsystem (MATIS) team has come up against while designing the distributed workflow system, as well as elaborates on the solutions that were implemented. The first is to design an easily adaptable system that requires no code changes as a result of configuration changes. The number of formal deliveries is often limited because each delivery costs time and money. Changes such as the sequence of programs being called, a change of a parameter value in the program that is being automated should not result in code changes or redelivery.

  18. KEY COMPARISON: CCQM-K28: Tributyltin in sediment

    NASA Astrophysics Data System (ADS)

    Wolff Briche, Céline S. J.; Wahlen, Raimund; Sturgeon, Ralph E.

    2006-01-01

    Key comparison CCQM K-28 was undertaken to assess the measurement capabilities for quantitation of (C4H9)3Sn+ (TBT) in a prepared marine sediment by National Metrology Institutes (NMIs), which are members of the Comité Consultatif pour la Quantité de Matière (CCQM). It follows a previous pilot study, CCQM-P18. [1, 2] This exercise was sanctioned by the 8th CCQM meeting, 18-19 April 2002, as an activity of the Inorganic Analysis Working Group and was jointly coordinated by the Institute for National Measurement Standards of the National Research Council of Canada (NRC) and LGC, UK. Eight NMIs initially indicated their interest, with seven ultimately submitting their results. All NMIs relied on isotope dilution mass spectrometry using a species-specific 117Sn-enriched TBT standard, which was supplied by LGC. No analytical methodology was prescribed for this study. As a result, a variety of extraction approaches was adopted by the participants, including mechanical shaking, sonication, accelerated solvent extraction, microwave assisted extraction and heating in combination with ethylation and direct sampling. Detection techniques included ICP-MS (coupled to GC or HPLC for the separation of Sn species) and GC-MS. Main text. To reach the main text of this paper, click on Final Report. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the Mutual Recognition Arrangement (MRA).

  19. L'équation d'état nucléaire

    NASA Astrophysics Data System (ADS)

    Suraud, E.

    We present part of our (direct or indirect) knowledge on the equation of state of nuclear matter in a density-temperature domain for which nucleonic effects are dominant (densities smaller than 2-4 times the saturation density and temperatures smaller than 10-20 MeV). The text is divided into three parts corresponding, respectively, to direct studies close to the saturation, to the astrophysical case and to the studies involving heavy-ion collisions. In chapter one, after a brief introduction to the concept of equation of state, we disçuss the saturation property of nuclear matter. The notion of incompressibility modulus is also introduced and its value is discussed in detail. Nuclear matter calculations trying to reproduce saturation from a nucleon-nucleon interaction are also briefly presented. In chapter two we study the equation of state in the astrophysical context. The role of the nuclear component is discussed in detail for the final phase of the collapse of supernovae cores. A brief presentation of calculations of the dense matter constituting neutron stars is also given. Chapter three is devoted to heavy-ion collisions below 500-600 MeV per nucleon. After a brief presentation of both theoretical and experimental frameworks, we focus on three particular aspects which could have a link with the nuclear matter equation of state: the formation of intermediate mass fragments, flow effects and subthreshold particle production. Nous présentons quelques unes de nos connaissances (directes et indirectes) sur l'équation d'état de la matière nucléaire dans un régime de densités et températures pour lesquelles la physique reste largement dominée par les effets nucléoniques (densités inférieures à 2-4 fois la densité de saturation, températures inférieures à 10-20 MeV). Le texte est divisé en trois parties correspondant respectivement aux études directes du voisinage de la saturation, au cas astrophysique et aux études menées à l'aide des

  20. A computational model that simulates mucociliary clearance in the bronchial tree, and a concomitant study on energetics and optimality

    NASA Astrophysics Data System (ADS)

    Manolidis, Michail; Isabey, Daniel; Louis, Bruno; Grotberg, James; Filoche, Marcel

    2015-11-01

    Systemic deterministic models of mucociliary clearance in the bronchial tree are currently scarce. While analytical/computational efforts have focused on microscopic modeling of mucociliary propulsion, macroscopic approaches have been restricted mainly to stochastic methods. We present an analytical/computational model that simulates mucociliary clearance in macroscopic physical domains. The analytical foundations of the model are based on a Stokes flow assumption, whereby, in addition to viscous forces originating in ciliary forcing, the role of surface tension is also considered. The governing equations are solved computationally on a three-dimensional surface mesh. Flow is simulated in an anatomically/geometrically representative bifurcation of the bronchial tree. The directionality of ciliary forcing in our model is optimized in order to maintain near-uniform mucus film thickness throughout the flow field. Based on the optimized version of the model, energetic considerations, as well as aspects of optimality in nature are analyzed and presented. 2nd affiliation: Professor, Physique de la Matière Condensée, Ecole Polytechnique, Palaiseau, France.

  1. Non-linearite et couplages lumiere-matiere en electrodynamique quantique en circuit

    NASA Astrophysics Data System (ADS)

    Bourassa, Jerome

    L'électrodynamique quantique en circuit est un contexte unique pour l'optique quantique et le calcul quantique. Dans cette architecture où des qubits supraconducteurs, composés de jonctions Josephson, sont fortement couplés au champ électromagnétique de résonateurs coplanaires, la dynamique du système est semblable à celle des atomes dans des cavités optiques. La polyvalence de la conception des circuits supraconducteurs permet d'étudier l'interaction lumière-matière de différents régimes et manières. Ainsi, plusieurs qubits peuvent être couplés à un seul résonateur afin de les enchevêtrer. Une jonction Josephson peut également être intégrée directement au résonateur afin de produire une interaction non linéaire entre les photons. De la même manière, il a été suggéré que le couplage qubitrésonateur pourrait devenir l'échelle d'énergie dominante du système : le régime de couplage ultrafort. Malgré que la dynamique qubit-résonateur soit bien comprise, les modèles actuels ne permettent pas de prédire correctement les effets dispersifs du résonateur sur les qubits tels : le décalage de Lamb, l'interaction d'échange virtuelle et le temps de relaxation. Comme il n'y a pas non plus de modèle général permettant de déterminer les caractéristiques d'un résonateur non linéaire, on comprend mal comment rendre la non-linéarité plus forte, ni même si le régime de couplage ultrafort peut être physiquement réalisé dans ces circuits. Dans le cadre de ma thèse, je me suis intéressé à la modélisation de qubits et de résonateurs afin de mieux comprendre l'interaction lumière-matière en circuits, dans le but de développer des conceptions alternatives d'architectures plus performantes ou qui explorent des régimes d'interactions méconnus. Pour ce faire, j'ai développé une méthode analytique générale permettant de trouver l'hamiltonien exact de circuits distribués non linéaires, une méthode basée sur la m

  2. Le consentement libre et éclairé aux soins en psychiatrie

    PubMed Central

    Neilson, Grainne; Chaimowitz, Gary

    2015-01-01

    Résumé Le patient a le droit d’être informé sur les soins de santé qui lui sont proposés et de participer activement à la prise de décisions relativement à ces soins. Le respect de la dignité et de l’autonomie de la personne passe par le respect de son droit de prendre des décisions à propos de ses soins psychiatriques, notamment de refuser un traitement, pour autant qu’elle soit apte à prendre des décisions. Il importe que le psychiatre connaisse les fondements éthiques du consentement libre et éclairé et les exigences prévues par le droit en cette matière, y compris la jurisprudence. Le consentement n’est pas immuable, pouvant changer avec le temps, au fil de l’évolution des conditions et des circonstances. Par conséquent, le consentement doit être un processus continu.

  3. Rapport d’évaluation des besoins de formation de l’Association canadienne de gastro-entérologie 2009

    PubMed Central

    Rostom, Alaa; Daniels, Sandra

    2009-01-01

    C’est en avril 2009 que l’Association canadienne de gastroentérologie a mené son plus récent sondage annuel en ligne auprès de ses membres afin de connaître leurs besoins en matière de formation. En tout, 261 personnes ont répondu au sondage. Comme lors des années précédentes, les sujets entourant les maladies inflammatoires de l’intestin (MII) et plus particulièrement, les traitements pour la maladie de Crohn et la colite ulcéreuse (CU), de même que les cas de MII rebelles, ont été les plus en demande pour les activités de formation à venir. Parmi les autres thèmes populaires, mention-nons les techniques et les traitements endoscopiques, la maladie cœliaque, la prise en charge des infections gastro-intestinales (IGI) et l’endoscopie en direct. Les deux types d’activités de formation les plus attrayantes ont été les conférences et les présentations en Webdiffusion et le portail didactique de l’ACG offrant des liens vers des présentations en ligne, des tests d’auto-évaluation et le suivi des crédits de maintien du certificat (MainCert).

  4. Neutron activation analysis: A primary method of measurement

    NASA Astrophysics Data System (ADS)

    Greenberg, Robert R.; Bode, Peter; De Nadai Fernandes, Elisabete A.

    2011-03-01

    Neutron activation analysis (NAA), based on the comparator method, has the potential to fulfill the requirements of a primary ratio method as defined in 1998 by the Comité Consultatif pour la Quantité de Matière — Métrologie en Chimie (CCQM, Consultative Committee on Amount of Substance — Metrology in Chemistry). This thesis is evidenced in this paper in three chapters by: demonstration that the method is fully physically and chemically understood; that a measurement equation can be written down in which the values of all parameters have dimensions in SI units and thus having the potential for metrological traceability to these units; that all contributions to uncertainty of measurement can be quantitatively evaluated, underpinning the metrological traceability; and that the performance of NAA in CCQM key-comparisons of trace elements in complex matrices between 2000 and 2007 is similar to the performance of Isotope Dilution Mass Spectrometry (IDMS), which had been formerly designated by the CCQM as a primary ratio method.

  5. Evidence for a strong intermolecular bond in the phenolṡN2 cation

    NASA Astrophysics Data System (ADS)

    Haines, S. R.; Geppert, W. D.; Chapman, D. M.; Watkins, M. J.; Dessent, C. E. H.; Cockett, M. C. R.; Müller-Dethlefs, K.

    1998-12-01

    The phenolṡN2 complex cation has been studied with a combination of two-color resonant zero kinetic energy (ZEKE) and mass analyzed threshold ionization (MATI) spectroscopies to probe the interaction of a polar cation with a quadrupolar solvent molecule. Extended vibrational progressions are observed in three modes which are assigned as the in-plane bend (35 cm-1), the stretch (117 cm-1), and in-plane wag (130 cm-1) intermolecular vibrations, and are consistent with a structure where the N2 forms a directional bond to the phenol OH group in the plane of the aromatic ring. Ab initio calculations at the UMP2/6-31G*, UHF/cc-pVDZ, and UMP2/cc-pVDZ levels of theory support this assignment. The spectra also provide a value for the adiabatic ionization energy (67 423 cm-1±4.5 cm-1) and an estimate of the dissociation energy of the cluster (1650±20 cm-1) which illustrate that the quadrupolar nitrogen molecule binds considerably more strongly to the phenol cation than a rare gas atom. These results constitute the first report of an aromaticṡN2 complex where the interaction can be described in terms of weak hydrogen bonding, rather than in terms of a van der Waals bond to the π-system of the benzene ring.

  6. Proton transfer in the [phenol-NH3]+ system: An experimental and ab initio study

    NASA Astrophysics Data System (ADS)

    Kim, Ho-Tae; Green, Richard J.; Qian, Jun; Anderson, Scott L.

    2000-04-01

    Mass-analyzed threshold ionization (MATI) has been used to prepare phenol cations in selected vibrational states, including the ground state. Reactions of ground state C6H5OH+ with ND3, studied in a guided ion-beam apparatus, are reported, along with related ab initio calculations. This paper focuses on the energetics and product branching in the proton transfer (PT) channel. Based on thermochemistry in the literature, combined with calculations of the intracomplex PT barrier, PT was expected to make up a large fraction of the total reactive scattering. Experimentally, it is found that PT has a small cross section with clear threshold behavior, and the conclusion is that the PT reaction is endoergic by 4.5±1 kcal/mole. Assuming that NH3 has a proton affinity of 204.0 kcal/mole, this results in a proton affinity for phenoxy radical of 208.7 kcal/mole, and a neutral PhO-H bond energy of 91.1 kcal/mole. The results are used to reinterpret previous dissociative photoionization studies of phenol-ammonia complexes.

  7. Une déshydratation révélant un déficit en 3ßéta Hydroxystéroïde Déshydrogénase: à propos d'un cas

    PubMed Central

    Latrech, Hanane; Gaouzi, Ahmed

    2015-01-01

    Le déficit en 3ßéta Hydroxystéroïde Déshydrogénase (3β HSD) est un désordre autosomique récessif rare touchant les voies de synthèse de tous les stéroïdes actifs dans les surrénales et les gonades. Cliniquement, il inclut, à des degrés variables, un syndrome de perte de sel et une hypomasculination des garçons. Ces dernières années, plusieurs avancées en matière de dosages hormonaux et de génétique ont été réalisées ce qui a permis de comprendre les bases moléculaires et le phénotype hormonal de ces patients. Nous exposons à travers un cas clinique les difficultés diagnostiques de ce déficit ainsi que la prise en charge thérapeutique.

  8. CFD study of isothermal water flow in rod bundle with split-type spacer grid

    NASA Astrophysics Data System (ADS)

    Batta, A.; Class, A. G.

    2014-06-01

    The design of rod bundles in nuclear application nowadays is assessed by CFD (computational fluid dynamics). The accuracy of CFD models need validation. Within the OECD/NEA benchmark MATiS-H (Measurement and Analysis of Turbulent Mixing in Sub-channels - Horizontal) a single-phase water flow in a 5x5 rod bundle is studied. In the benchmark, two types of spacer grids are tested, the swirl type and the split type, where the current study focuses on the split type spacer grid. Comparison of CFD results obtained at Karlsruhe Institut of Technology (KIT) with experimental results of KAERI (Korea Atomic Energy Research Institute) are presented. In the benchmark velocities components along selected lines downstream of the spacer grid are measured and compared to CFD results. The CFD code STAR CCM+ with the Realized k-ɛ model is used. Comparisons with experimental results show quantitative and qualitative agreement for the averaged values of velocity components. Comparisons of results to other benchmark partners using different modeling show that the selected mesh size and models for the analysis of the current case gives relatively accurate results. However, the used turbulent model (Realized k-ɛ does not capture the turbulent intensity correctly. Computation shows that the flow has very high mixing due to the spacer grid, which does not decay within the measurements domain (z/ DH =0-10 downstream of spacer grid). The same conclusion can be drawn from experimental data.

  9. The CONV-3D code for DNS CFD calculation

    NASA Astrophysics Data System (ADS)

    Chudanov, Vladimir; ALCF ThermHydraX Team

    2014-03-01

    The CONV-3D code for DNS CFD calculation of thermal and hydrodynamics on Fast Reactor with use of supercomputers is developed. This code is highly effective in a scalability at the high performance computers such as ``Chebyshev'', ``Lomonosov'' (Moscow State University, Russia), Blue Gene/Q(ALCF MIRA, ANL). The scalability is reached up to 106 processors. The code was validated on a series of the well known tests in a wide range of Rayleigh (106-1016) and Reynolds (103-105. Such code was validated on the blind tests OECD/NEA of the turbulent intermixing in horizontal subchannels of the fuel assembly at normal pressure and temperature (Matis-H), of the flows in T-junction and the report IBRAE/ANL was published. The good coincidence of numerical predictions with experimental data was reached, that specifies applicability of the developed approach for a prediction of thermal and hydrodynamics in a boundary layer at small Prandtl that is characteristic of the liquid metal reactors. Project Name: ThermHydraX. Project Title: U.S.-Russia Collaboration on Cross-Verification and Validation in Thermal Hydraulics.

  10. Les enjuex éthiques entourant la recherche en santé sur les enfants

    PubMed Central

    2008-01-01

    RÉSUMÉ La recherche en santé est un devoir moral parce qu’elle est la base des soins probants prodigués par tous les dispensateurs de soins. Des politiques et des règlements précis régissent la tenue des recherches sur des humains. Il faut procéder à une évaluation éthique d’un projet de recherche donné avant de pouvoir l’entreprendre. La recherche sur les enfants pose d’énormes défis en matière de consentement éclairé et d’assentiment, de vulnérabilité et de potentiel de conflit d’intérêts (CDI). Les chercheurs en santé pédiatrique devraient prôner la participation des enfants à la recherche, tout en se montrant attentifs à en limiter les risques.

  11. A Sensitive Mass-spectrum Assay to Characterize Engineered Methionine Adenosyltransferases with S-Alkyl Methionine Analogues as Substrates

    PubMed Central

    Wang, Rui; Zheng, Weihong; Luo, Minkui

    2014-01-01

    Methionine adenosyltransferases (MATs) catalyze the formation of S-adenosyl-L-methionine (SAM) inside living cells. Recently, S-alkyl analogues of SAM have been documented as cofactor surrogates to label novel targets of methyltransferases. However, these chemically synthesized SAM analogues are not suitable for cell-based studies because of their poor membrane permeability. This issue was recently addressed under a cellular setting through a chemoenzymatic strategy to process membrane-permeable S-alkyl analogues of methionine (SAAM) into the SAM analogues with engineered MATs. Here we describe a general, sensitive activity assay for engineered MATs by converting the reaction products into S-alkyl-thioadenosines, followed by HPLC/MS/MS quantification. With this assay, 40 human MAT mutants were evaluated against seven SAAM as potential substrates. The structure-activity-relationship revealed that, besides better engaged SAAM binding by the MAT mutants (lower Km value in contrast to native MATs), the gained activity towards the bulky SAAM stems from their ability to maintain the desired linear SN2 transition state (reflected by higher kcat value). Here the I117A mutant of human MATI was identified as the most active variant for biochemical production of SAM analogues from diverse SAAM. PMID:24374249

  12. Delineation of flood-prone areas and the identification of residential hotspots for two African cities

    NASA Astrophysics Data System (ADS)

    De Risi, Raffaele; Jalayer, Fatemeh; De Paola, Francesco; Iervolino, Iunio; Giugni, Maurizio; Topa, Maria Elena; Yonas, Nebyou; Nebebe, Alemu; Woldegerima, Tekle; Yeshitela, Kumelachew; Kibassa, Deusdedit; Shemdoe, Riziki; Cavan, Gina; Lindley, Sarah; Renner, Florian; Printz, Andreas

    2013-04-01

    the inundation profile. Applying the above-mentioned procedure, taking into account all available information on the inundation profiles for various zones within the basin, leads to a probability distribution for the TWI threshold value. In the next step, the urban residential hot spots to flooding are delineated in the GIS environment by overlaying the map of TWI and the UMT units classified as residential for various percentiles of the TWI threshold. Differences in exposure characteristics can be assessed for a range of different residential types, including for example between condominium/multi-storey, single storey stone/concrete and areas predominantly associated with mud/wood construction. For each percentile value considered, the delineated flood-prone residential areas and the number of people potentially affected to flooding are calculated. Moreover, the potential dependence of the estimated threshold percentiles on the flooding return period is investigated. As a demonstration, the urban residential hotspots to flooding are delineated for 16th, 50th and 84th percentiles of the TWI value for the cities of Dar es Salaam and Addis Ababa. References Qin C.Z., Zhu A.X., Pei T., Li B.L., Scholten T., Behrens T., Zhou C.H.. An approach to computing topographic wetness index based on maximum downslope gradient. Precision Agric, 12:32-43, DOI 10.1007/s11119-009-9152-y, 2011. Manfreda S., Di Leo M., Sole A. Detection of Flood-Prone Areas Using Digital Elevation Models. Journal of Hydrologic Engineering, 16 (10):781-790, 2011. Pauleit, S. and Duhme, F. (2000). Assessing the environmental performance of land cover types for urban planning. Landscape and Urban Planning, 52 (1): 1-20. Gill, S.E., Handley, J.F., Ennos, A.R. Pauleit, S., Theuray, N., and Lindley, S.J. (2008). Characterising the urban environment of UK cities and towns: a template for landscape planning in a changing climate. Landscape and Urban Planning, 87: 210-222. Cavan, G., Lindley, S., Yeshitela, K

  13. Optimisation of sample preparation protocols for measurement of PGE and Re-Os in organic-rich shales by isotope dilution ICP-MS

    NASA Astrophysics Data System (ADS)

    Rammensee, Philipp; Aulbach, Sonja; Gudelius, Dominik; Brey, Gerhard

    2013-04-01

    interfering elements (Y, Zr, Mo, Cd, Hf, Hg) include the use of cation- and anion resins, and variations of the molarity and composition of the eluent. Preliminary results show that digestion method (1) leaves behind small amounts of presumably PGE-free silica gel; (2) yields consistently higher Re concentrations with an expectedly large amount of solid residue; (3) produces an insoluble sludge; (4) allows complete digestion, but precludes the collection of Os. Column calibrations show the best recovery of PGE-Re in cation resin using 0.2 mol/l HCl as eluent, but intolerably high ratios of interfering over elements of interest, whereas the best matrix separation is achieved using 0.05 mol/l HCl as eluent, but is accompanied by low PGE-Re yields presumably due to the instability of Cl complexes in this medium. They also show that U elutes separately from PGE-Re in 6 mol/l HCl and could be collected with a view to analysing U isotopes as an additional redox proxy. Further tests will be carried out using alternative high-pressure digestion systems. [1] Anbar, et al. (2007) Science 317:1903-1906; [2] Meisel et al. (2003) JAAS 18:720-726; [3] Xu et al. (2012) CG 324:132-147

  14. VizieR Online Data Catalog: WISE data for radio-loud AGN complete samples (Gurkan+, 2014)

    NASA Astrophysics Data System (ADS)

    Gurkan, G.; Hardcastle, M. J.; Jarvis, M. J.

    2014-11-01

    The 3CRR, 2Jy, 6CE and 7CE samples were chosen for our analysis. We used the revised subsample of the 3CR catalogue of radio sources (Bennett, 1962MNRAS.125...75B), which have flux densities greater than 10.9Jy at 178MHz (Laing, Riley & Longair, 1983MNRAS.204..151L, Cat. J/MNRAS.204.151). There are 172 sources with 0.0029J/A+AS/110/419), is a complete sample having flux densities greater than 0.5Jy at 151MHz (Willott et al., 1998MNRAS.300..625W, 2002MNRAS.335

  15. VizieR Online Data Catalog: UBVRI photometry of faint field stars (Skiff, 2007)

    NASA Astrophysics Data System (ADS)

    Skiff, B. A.

    2007-03-01

    /324) and symbiotic stars (e.g. Cat. J/A+A/143/343). Additional Henden sequences have been adopted from the files cited below at the AAVSO ftp site. These large sequences were trimmed to include only a few stars per magnitude interval, and also to omit crowded stars (no significant companions closer than 15" radius). The star coordinates are mainly from early versions of the GSC or USNO series. As such they are given to 1" precision, and in some cases small systematic errors and (now) proper motion mean their accuracy is in the 1" to 5" range. Thus for automated linkage to CCD frames, some modest search radius should be adopted to match with the catalogue. Because the file was originally intended for private use, bibliographic references were not included except in a very few instances. Usually it is straightforward to recover the source paper by inspection of the SIMBAD bibliography for specific objects. Problematic cases can be directed to the compiler (Brian Skiff). (2 data files).

  16. Progress in LA-ICP-MS Microanalysis Using a 200 nm-femtosecond Laser

    NASA Astrophysics Data System (ADS)

    Jochum, K. P.; Stoll, B.; Weis, U.; Jacob, D. E.; Mertz-Kraus, R.; Andreae, M. O.

    2013-12-01

    reference glasses for calibration, such as those from NIST or MPI-DING. Accurate trace element analyses can therefore be performed for samples, where no suitable matrix-matched reference materials exist, such as for stalagmites, corals, ostracods, bones and other biominerals. To demonstrate the performance of 200 nm-fs LA-ICP-MS we have determined the mass fractions of 47 elements in 22 microanalytical reference materials including the new carbonate and phosphate reference materials MACS and MAPS from the USGS. Overall analytical uncertainties at the 95 % confidence level are 5 - 10 % for most elements. The fs laser data agree well with available reference values. [1] Avanesyan et al. (2004) Proc. of SPIE Vol. 5352, 169-179. [2] Fryer et al. (1995) Can. Min. 33, 303-312. [3] Kroslakova and Günther (2007) JAAS 22, 51-62.

  17. Global survey of star clusters in the Milky Way. III. 139 new open clusters at high Galactic latitudes.

    NASA Astrophysics Data System (ADS)

    Schmeja, S.; Kharchenko, N. V.; Piskunov, A. E.; Roeser, S.; Schilbach, E.; Froebrich, D.; Scholz, R.-D.

    <-18.5. We present: The Catalogue of new MWSC open clusters found at high galactic latitudes (|b|>18.5°) which includes several files: Catalogue of cluster parameters (confirmed clusters only); Index of all MWSC(|b|>18.5 deg) candidates; Notes for every item of index list. Within each list the entries are ordered along with MWSC number. The Catalogues of the MWSC Stars in 139 circular sky areas with confirmed clusters. Files are ordered by MWSC number; inside each sky area the entries are ordered by Ks magnitudes. The Atlas of new MWSC clusters diagrams. In the Atlas the Cluster pages are ordered by MWSC number. All the data are given in the same format as in the main MWSC catalogue (Cat. J/A+A/558/A53). (5 data files).

  18. Long-Term Performance of Pb Isotopic Analysis by TIMS with 202Pb-205Pb Double Spike

    NASA Astrophysics Data System (ADS)

    Amelin, Y.; Connelly, J. N.

    2008-05-01

    depends mostly on the amount of Pb in the load. The quality of DS Pb analyses is demonstrated by a three-fold improvement in precision of the linear fit for the iron meteorite Cape York [9] compared to the same data reduced with external normalization, and by dates of angrites, eucrites and CAIs with precision between 0.12-0.30 Ma [3-7,9]. [1] Amelin Y. and Davis W.J. (2006) JAAS 21, 1053-1061, [2] Corfu F. and Dahlgren S. (2008) EPSL 265, 256-269, [3] Connelly J.N. et al. (2008) LPS- XXXIX, #2386, [4] Amelin Y. et al. (2006) LPS-XXXVII, #1970 [5] Amelin Y. (2008) GCA 72, 221-232, [7] Connelly J.N. et al. (2008) Astrophys. J., in press, [8] Gerstenberger H. and Haase G. (1997) Chem. Geol. 136, 309-312, [9] Connelly J.N. et al. submitted to GCA.

  19. VizieR Online Data Catalog: Multi-resolution images of M33 (Boquien+, 2015)

    NASA Astrophysics Data System (ADS)

    Boquien, M.; Calzetti, D.; Aalto, S.; Boselli, A.; Braine, J.; Buat, V.; Combes, F.; Israel, F.; Kramer, C.; Lord, S.; Relano, M.; Rosolowsky, E.; Stacey, G.; Tabatabaei, F.; van der Tak, F.; van der Werf, P.; Verley, S.; Xilouris, M.

    2015-02-01

    The FITS file contains maps of the flux in star formation tracing bands, maps of the SFR, maps of the attenuation in star formation tracing bands, and a map of the stellar mass of M33, each from a resolution of 8"/pixel to 512"/pixel. The FUV GALEX data from NGS were obtained directly from the GALEX website through GALEXVIEW. The observation was carried out on 25 November 2003 for a total exposure time of 3334s. Hα+[NII] observations were carried out in November 1995 on the Burrel Schmidt telescope at Kitt Peak National Observatory. The observations and the data processing are analysed in detail in Hoopes & Walterbos (2000ApJ...541..597H). The Spitzer IRAC 8um image sensitive to the emission of Polycyclic Aromatic Hydrocarbons (PAH) and the MIPS 24um image sensitive to the emission of Very Small Grains (VSG) were obtained from the NASA Extragalactic Database and have been analysed by Hinz et al. (2004ApJS..154..259H) and Verley et al. (2007A&A...476.1161V, Cat. J/A+A/476/1161). The PACS data at 70um and 100um, which are sensitive to the warm dust heated by massive stars, come from two different programmes. The 100um image was obtained in the context of the Herschel HerM33es open time key project (Kramer et al., 2010A&A...518L..67K, observation ID 1342189079 and 1342189080). The observation was carried out in parallel mode on 7 January 2010 for a duration of 6.3h. It consisted in 2 orthogonal scans at a speed of 20"/s, with a leg length of 7'. The 70um image was obtained as a follow-up open time cycle 2 programme (OT2mboquien4, observation ID 1342247408 and 1342247409). M33 was scanned on 25 June 2012 at a speed of 20"/s in 2 orthogonal directions over 50' with 5 repetitions of this scheme in order to match the depth of the 100um image. The total duration of the observation was 9.9h. The cube, cube.fits files, contains 16 extensions: * FUV * HALPHA * 8 * 24 * 70 * 100 * SFR_FUV * SFR_HALPHA * SFR_24 * SFR_70 * SFR_100 * SFRFUV24 * SFRHALPHA24 * A_FUV * A

  20. Design and Application of a Sr-84/Sr-87-Double Spike to Determine Natural Strontium Isotope Fractionation in Carbonates and Silicates

    NASA Astrophysics Data System (ADS)

    Krabbenhoeft, A.; Eisenhauer, A.; Liebetrau, V.; Fietzke, J.; Boehm, F.

    2008-12-01

    ., Hansen B.T. and Nägler Th.F. (2002) Measurement of Calcium Isotopes (δ 44Ca) Using a Multicollector TIMS Technique. International Journal of Mass Spectrometry 220, 385-397. 2 Fietzke J. and Eisenhauer A. (2006) Determination of temperature-dependent stable strontium isotope (88Sr/86Sr) fractionation via bracketing standard MC-ICP-MS. Geochemistry, Geophysics, Geosystems, 7, doi:10.1029/2006GC001243. 3. J. Fietzke, V. Liebetrau, D. Günther, K. Gürs, K. Hametner, K. Zumholz, T. H. Hansteen and A. Eisenhauer (2008) An alternative data acquisition and evaluation strategy for improved isotope ratio precision using LA-MC-ICP-MS applied to stable and radiogenic strontium isotopes in carbonates. Journal of Analytical Atomic Spectrometry (JAAS), doi: 10.1039/b717706b

  1. Strontium Isotope Fractionation in the marine Realm: first application of a 87Sr/84Sr-Double Spike

    NASA Astrophysics Data System (ADS)

    Eisenhauer, A.; Krabbenhöft, A.; Böhm, F.; Liebetrau, V.; Fietzke, J.; Augustin, N.; Peucker-Ehrenbrink, B.; Vollstaedt, H.

    2009-04-01

    Multicollector TIMS Technique. International Journal of Mass Spectrometry 220, 385-397. 2 Fietzke J. and Eisenhauer A. (2006) Determination of temperature-dependent stable strontium isotope (88Sr•86Sr) fractionation via bracketing standard MC-ICP-MS. Geochemistry, Geophysics, Geosystems 7, doi:10.1029/2006GC001243 (2006). 3. J. Fietzke, V. Liebetrau, D. Günther, K. Gürs, K. Hametner, K. Zumholz, T. H. Hansteena and A. Eisenhauer (2008) An alternative data acquisition and evaluation strategy for improved isotope ratio precision using LA-MC-ICP-MS applied to stable and radiogenic strontium isotopes in carbonates. Journal of Analytical Atomic Spectrometry (JAAS)

  2. Atomic spectrometry update - atomic mass spectrometry.

    SciTech Connect

    Bacon, J.; Crain, J. S.; McMahon, A. W.; Williams, J. G.; Analytical Chemistry Laboratory; The Macaulay Land Use Research Inst.; Manchester Metropolitan Univ.; Imperial Coll.

    1996-10-01

    The MS and XRF updates have been published together since their introduction in 1988. In the last few years, however, the two sections have been prepared independently of each other and it therefore seemed appropriate to publish the two sections separately. With effect from this issue, the MS Update will appear in the October issue of JAAS and the XRF Update in the November issue. The format used for the MS section is broadly similar to that used last year, with some additional sub-headings. This Update is intended to cover all atomic and stable isotopic MS techniques, but not those used in studies of fundamental nuclear physics and exotic nuclei far from stability. Also excluded are those reports in which MS is used as a tool in the study of molecular processes and of gaseous components. the review is based on critical selection of developments in instrumentation and methodology, notable for their innovation, originality or achievement of significant advances, and is not intended to be comprehensive in its coverage. Conference papers are only included if they contain enough information to show they meet these criteria, and our policy in general remains one of waiting for a development to appear in a full paper before inclusion in the review. a similar policy applies to foreign language papers unlikely to reach a wide audience. Routine applications of atomic MS are not included in this Update and the reader is referred to the Updates on Industrial Analysis: Metals, Chemicals and Advanced Materials (96/416), Environmental Analysis (96/1444) and Clinical and Biological Materials, Food and Beverages (96/2479). Also excluded are those applications, even if not routine, which use atomic spectroscopy as a tool for the study of a non-atomic property, for example, the use of stable isotope labeling of carbon or nitrogen in biomolecules in metabolic studies. There have been few general reviews on atomic MS of note in the period covered by this update. That of Colodner et al

  3. VizieR Online Data Catalog: Multiwavelength photometry of 34 galaxies (Rowlands+, 2014)

    NASA Astrophysics Data System (ADS)

    Rowlands, K.; Dunne, L.; Dye, S.; Aragon-Salamanca, A.; Maddox, S.; da Cunha, E.; Smith, D. J. B.; Bourne, N.; Eales, S.; Gomez, H. L.; Smail, I.; Alpaslan, M.; Clark, C. J. R.; Driver, S.; Ibar, E.; Ivison, R. J.; Robotham, A.; Smith, M. W. L.; Valiante, E.

    2014-03-01

    Photometry for 34 submillimetre galaxies (including 5 galaxies with poor quality SED fits rejected from the final sample) utilised in the paper from the compilation in Magnelli et al (2012A&A...539A.155M, hereafter M12), which were taken from blank field (sub)millimetre surveys (850-1200um) which have robust counterparts identified with deep radio, interferometric submillimetre and/or mid-infrared imaging. In GOODS-N all photometry shortwards of 3um is described in Berta et al. (2010A&A...518L..30B, 2011A&A...532A..49B) and includes PSF-matched photometry from HST ACS bviz (version 1.0), FLAMINGOS JHK, IRAC 3.6, 4.5, 5.8, 8.0um was obtained with the ConvPhot code and spectroscopic redshifts and U-band magnitudes from Barger et al. (2008, Cat. J/ApJ/689/687). Deep CFHT WirCAM K_s band photometry was taken from Wang et al. (2010, Cat. J/ApJS/187/251). We refer the reader to http://www2011.mpe.mpg.de/ir/Research/PEP/publicdatareleases.php?lang=en for details, but briefly, magnitudes with value +99.99 are non-detections. ConvPhot-derived magnitudes are negative if they are fainter than the 1-sigma noise level. In this case the absolute value of the magnitude (with a small correction to galactic extinction) corresponds to half their flux and their magnitude uncertainty is equal to 0.7526mag. The U-band magnitudes from Barger et al. (2008, Cat. J/ApJ/689/687) are -99.99 if a source was not matched. In some cases magnitudes are negative and not -99.99, see Barger et al (2008, Cat. J/ApJ/689/687) for details. WIRCam Ks magnitudes are -99.99 if an object was not matched. The 70um MIPS data in GOODS-N are from Magnelli et al. (2011, Cat. J/A+A/528/A35), negative flux values indicate an upper limit, with the absolute flux value equal to the 5σ upper limit computed from the 70um residual map. We list the uncertainties from both the residual map and Monte-Carlo simulations which includes an additional statistical contribution from confusion noise, see Magnelli et al. (2011

  4. Étude théorique et expérimentale du transfert du dioctyl phtalate à partir d'un disque de PVC plastifié plongé dans une huile comestible

    NASA Astrophysics Data System (ADS)

    Djilani, S.-E.; Toubal, A. A.; Messadi, D.

    1998-10-01

    When polymer and liquid are contacted with each other, as in packaging, some mass exchanges may occur, which constitute a major drawback when the liquid is a foodstuff or blood. However, these mass transfers in the polymers can appear as very interesting from the industrial point of view, if one is able to use and control them. It is then necessary to have a good knowledge of these transfer processes which are controlled by diffusion. Dioctyl phthalate (DOP) migration into an edible oil was studied under worst conditions: high plasticization level (50% by weight) and temperature(30 circC). The quantitative analysis of DOP in a such complex liquid medium and in the PVC itself was made easy by the use of the radioactive tracer technique. A simplified mathematical model, obtained by neglecting the oil transport in the PVC, was evaluated. This model based on the research of a finite differences explicit solution allows to reproduce for the DOP, the concentration profiles in the polymer and the kinetics of transfer in the oil, with a P-value ≥ 0.001. La mise en contact polymère-liquide se traduit généralement par des échanges de matière entre les 2 milieux considérés, ce qui constitue un inconvénient majeur lorsque le liquide est un aliment ou le sang. Cependant, ces transferts de matière dans les polymères peuvent apparaître comme très intéressants sur le plan industriel, si l'on est capable de les utiliser et de les contrôler. Il est donc nécessaire d'avoir une bonne connaissance de ces processus de transfert qui sont contrôlés par diffusion. Nous avons étudié la migration du dioctyl phtalate (DOP) dans une huile comestible en nous plaçant dans les conditions les plus défavorables: taux de plastification (50% en poids) et température (30°C) élevés. L'analyse quantitative du DOP dans un milieu liquide aussi complexe et dans le PVC lui- même a été facilitée par l'utilisation de la technique des traceurs radioactifs. Un modèle math

  5. Préface

    NASA Astrophysics Data System (ADS)

    Cornet, Alain

    2004-11-01

    Le premier colloque Rayons X et Matière (Rx 95) s'est tenu à Strasbourg en 1995. Il était destiné à célébrer le centenaire de la découverte des rayons X par ROENTGEN et a alors réuni plus de cent trente chercheurs et industriels concernés par les rayons X et les matériaux. Parmi eux se trouvaient les Professeurs André GUINIER et Hans NEFF ainsi que Monsieur Michel BRUNEL qui hélas ne sont plus parmi nous à ce jour. La qualité et la convivialité des échanges entre les participants lors de cette première réunion ne pouvaient que nous inciter à la reconduire et nous avons pris rendez vous pour 1997, puis 1999, puis 2001 et enfin pour 2003, soient cinq colloques, un tous les deux ans pendant dix ans. Au cours des années, nous avons essayé d'adapter les thèmes abordés à l'évolution de la recherche et des techniques. Ces thèmes se sont naturellement ajoutés aux thèmes classiques comme la diffraction et la fluorescence. Les nanomatériaux, les microfaisceaux en sont des exemples. A de très rares exceptions les communications présentées étaient de très bon niveau et nous avons toujours eu beaucoup de plaisir à les publier. Ces colloques ont bien fonctionné en raison de la participation des industriels qui, dans leur grande majorité, nous ont accompagnés régulièrement. Ces colloques présentent l'avantage, par rapport à des colloques spécialisés, de couvrir (presque) tout le champ des applications des rayons X et seulement ce domaine. Toutefois il est clair que les données économiques évoluent et que la situation est chaque aimée plus difficile pour tout le monde, chercheurs et industriels. Temps et moyens sont comptés et maintenant chacun doit faire de plus en plus de choix, rentabilité oblige ! Le maintien du colloque Rayons X et Matière passera obligatoirement par une réflexion globale : redéfinition des objectifs, augmentation de l'ouverture européenne, recherche d'autres formes de participation associant mieux les

  6. La nutrition du nourrisson né à terme et en santé

    PubMed Central

    1998-01-01

    La nutrition du nourrisson né à terme et en santé constitue le nouvel énoncé national sur la nutrition du nourrisson, de la naissance à l’âge de 24 mois. Il s’agit d’un projet conjoint de la Société canadienne de pédiatrie, des Diététistes du Canada et de Santé Canada. Cet ouvrage est une synthèse de la documentation scientifique actuelle en matière de nutrition du nourrisson ; il contient des principes et recommandations afin d’aider les professionnels de la santé à promouvoir la prestation des meilleurs soins alimentaires possibles pour les nourrissons du Canada, compte tenu de l’état actuel de la recherche. La collaboration entre les trois principaux organismes qui s’intéressent à cette question a permis d’uniformisé le message que les professionnels transmettront au public. Le document aborde quatre grands sujets relatifs à la première année d’existence : l’allaitement, les laits de remplacement, les autres liquides dans le régime du nourrisson et la transition aux aliments solides. On y examine ensuite la question de la sécurité dans l’alimentation, puis celle de la nutrition durant la deuxième année. La dernière section couvre les autres questions liées à la nutrition du nourrisson ; on y traite de sujets tels que les allergies alimentaires, les coliques, la constipation, les matières grasses dans le régime alimentaire, la carie dentaire, la gastroentérite, le diabète, l’anémie ferriprive et les régimes végétariens. Le document contient également un répertoire complet de plus de 200 citations. Le sommaire des principes et recommandations paraîtra dans les revues officielles de la Société canadienne de pédiatrie (Paediatrics and Child Health, 1998) et des Diététistes du Canada (Revue canadienne de pratique et de recherche en diététique, juin 1998). On peut télécharger le document intégral à partir des sites Web respectifs des trois organismes associés ; on peut aussi obtenir la

  7. The STARK-B database as a resource for “STARK” widths and shifts data: State of advancement and program of development

    NASA Astrophysics Data System (ADS)

    Sahal-Bréchot, Sylvie; Dimitrijević, Milan S.; Moreau, Nicolas; Ben Nessib, Nabil

    2014-10-01

    “Stark” broadening theories and calculations have been extensively developed for about 50 years and can now be applied to many needs, especially for accurate spectroscopic diagnostics and modeling. This requires the knowledge of numerous collisional line profiles. Nowadays, the access to such data via an online database becomes essential. STARK-B is a collaborative project between the Astronomical Observatory of Belgrade and the Laboratoire d’Étude du Rayonnement et de la matière en Astrophysique (LERMA). It is a database of calculated widths and shifts of isolated lines of atoms and ions due to electron and ion collisions (impacts). It is devoted to modeling and spectroscopic diagnostics of stellar atmospheres and envelopes, laboratory plasmas, laser equipments and technological plasmas. Hence, the domain of temperatures and densities covered by the tables is wide and depends on the ionization degree of the considered ion. STARK-B has been fully opened since September 2008 and is in free access. The first stage of development was ended in autumn 2012, since all the existing data calculated with the impact semiclassical-perturbation method and code by Sahal-Bréchot, Dimitrijević and coworkers have now been implemented. We are now beginning the second stage of the development of STARK-B. The state of advancement of the database and our program of development are presented here, together with its context within VAMDC. VAMDC (Virtual Atomic and Molecular Data Center) is an international consortium which has built a secure, documented, flexible interoperable platform e-science permitting an automated exchange of atomic and molecular data.

  8. Virtual laboratory astrophysics : The STARK-B database

    NASA Astrophysics Data System (ADS)

    Sahal-Bréchot, S.; Dimitrijević, M. S.; Moreau, N.

    2012-02-01

    Stark broadening theories and calculations have been extensively developed for about 50 years. The theory can now be considered as mature for many applications, especially for accurate spectroscopic diagnostics and modelling. This requires the knowledge of numerous collisional line profiles, especially for very low abundant atoms and ions which are used as probes for modern spectroscopic diagnostics in astrophysics. Nowadays, the access to such data via an on line database becomes essential. STARK-B (http://stark-b.obspm.fr) is a collaborative project between the Astronomical Observatory of Belgrade and the Laboratoire d'Étude du Rayonnement et de la matière en Astrophysique (LERMA). It is a database of calculated widths and shifts of isolated lines of atoms and ions due to electron and ion collisions (impacts). It is devoted to modelling and spectroscopic diagnostics of stellar atmospheres and envelopes, laboratory plasmas, laser equipments and technological plasmas. Hence, the domain of temperatures and densities covered by the tables is wide and depends on the ionization degree of the considered ion. The STARK-B database is a part of VAMDC (Virtual Atomic and Molecular Data Centre, http://www.vamdc.eu), which is an European Union funded collaboration between groups involved in the generation and use of atomic and molecular data. VAMDC aims to build a secure, documented, flexible and interoperable e-science environment-based interface to existing atomic and molecular data.

  9. Douleurs et conflits : Approche comparative et implications pour la qualité des soins en fin de vie

    PubMed Central

    Mpinga, Emmanuel Kabengele; Verloo, Henk; Rapin, Charles-Henri; Chastonay, Philippe

    2009-01-01

    Le conflit serait-il à l’organisation ce que la douleur est à un organisme ? OBJECTIFS: Explorer les similitudes et les differences entre les douleurs et les conflits dans les contextes de soins de fin de vie. Mieux comprendre le rôle des conflits dans la qualité de ces soins. MÉTHODOLOGIE: Méthode comparative et réflexive autour des politiques de prise en charge des douleurs et des conflits dans les systèmes de soins. RÉSULTATS: Les conflits et les douleurs présentent de nombreuses similitudes de par leur identité, leur typologie, leur prévalence, leur fonction d’alerte, leurs coûts économiques et sociaux, le déni ou l’occultation qui les entourent et les obstacles à leur prise en charge adéquate. À l’inverse, des différences apparaissent dans la prise en charge des douleurs comparée à celle des conflits. Ces différences portent sur l’existence des programmes de prévention et de lutte sur les scènes nationale et internationale, la mise en œuvre des activités de recherche et de formation et la visibilité sociale. Pour les conflits, cette mise en œuvre n’existe pas encore. CONCLUSION: Les décideurs en clinique et en santé publique devraient intégrer les conflits comme un indicateur de la qualité des soins et élaborer des politiques pertinentes en matière de santé. PMID:19714268

  10. Land cover effects on infiltration and preferential flow pathways in the high rainfall zone of Madagascar

    NASA Astrophysics Data System (ADS)

    Zwartendijk, Bob; van Meerveld, Ilja; Ravelona, Maafaka; Razakamanarivo, Herintsitohaina; Ghimire, Chandra; Bruijnzeel, Sampurno; Jones, Julia

    2015-04-01

    Shortened slash-and-burn cycles exhaust agricultural land and have resulted in extensive tracts of highly degraded land across the tropics. Land degradation typically results in decreased rainfall infiltration due to a reduced field-saturated hydraulic conductivity of the topsoil because of a progressive decline in soil organic matter, exposure to raindrop impact, surface sealing and compaction. This results, in turn, in enhanced surface runoff and erosion, and consequently less subsurface flow and groundwater recharge. On the other hand, natural vegetation regrowth or active reforestation can lead to a renewed accumulation of soil organic matter, macropore development and increased infiltration rates. As part of the P4GES project (Can Paying 4 Global Ecosystem Services values reduce poverty?; www.p4ges.org), we study the effects of land use change and reforestation on water resources in the Corridor Ankeniheny-Zahamena (CAZ) in eastern Madagascar. In this poster, we present the results of infiltration and preferential flow measurements in four different land uses in the southern part of the CAZ: (i) closed canopy forest, (ii) 3-14 year-old regrowth on fallow land (savokas), (iii) exhausted and severely degraded land (tany maty), and (iv) recently reforested sites (6-8 years old). The results show that infiltrability increases significantly after several years of forest regrowth after land abandonment, but it remains unclear whether active replanting decreases the time required for restoration of soil hydrological functioning. Preferential flow pathways differed strikingly between the respective land cover types: infiltration in mature forests was predominantly characterized by macropore flow (preferential flow pathways), whereas infiltration in exhausted agricultural land was dominated by matrix flow (few preferential flow pathways). Occurrence of preferential flow pathways in reforestation and fallow sites varied considerably. These results suggest that land

  11. The neutron channeling phenomenon.

    PubMed

    Khanouchi, A; Sabir, A; Boulkheir, M; Ichaoui, R; Ghassoun, J; Jehouani, A

    1997-01-01

    Shields, used for protection against radiation, are often pierced with vacuum channels for passing cables and other instruments for measurements. The neutron transmission through these shields is an unavoidable phenomenon. In this work we study and discuss the effect of channels on neutron transmission through shields. We consider an infinite homogeneous slab, with a fixed thickness (20 lambda, with lambda the mean free path of the neutron in the slab), which contains a vacuum channel. This slab is irradiated with an infinite source of neutrons on the left side and on the other side (right side) many detectors with windows equal to 2 lambda are placed in order to evaluate the neutron transmission probabilities (Khanouchi, A., Aboubekr, A., Ghassoun, J. and Jehouani, A. (1994) Rencontre Nationale des Jeunes Chercheurs en Physique. Casa Blanca Maroc; Khanouchi, A., Sabir, A., Ghassoun, J. and Jehouani, A. (1995) Premier Congré International des Intéractions Rayonnements Matière. Eljadida Maroc). The neutron history within the slab is simulated by the Monte Carlo method (Booth, T. E. and Hendricks, J. S. (1994) Nuclear Technology 5) and using the exponential biasing technique in order to improve the Monte Carlo calculation (Levitt, L. B. (1968) Nuclear Science and Engineering 31, 500-504; Jehouani, A., Ghassoun, J. and Aboubker, A. (1994) In Proceedings of the 6th International Symposium on Radiation Physics, Rabat, Morocco). Then different geometries of the vacuum channel have been studied. For each geometry we have determined the detector response and calculated the neutron transmission probability for different detector positions. This neutron transmission probability presents a peak for the detectors placed in front of the vacuum channel. This study allowed us to clearly identify the neutron channeling phenomenon. One application of our study is to detect vacuum defects in materials. PMID:9463884

  12. External radiation exposure and mortality in a cohort of French nuclear workers

    PubMed Central

    Telle‐Lamberton, M; Samson, E; Caër, S; Bergot, D; Bard, D; Bermann, F; MGélas, J; Giraud, J M; Hubert, P; Metz‐Flamant, C; Néron, M O; Quesne, B; Tirmarche, M; Hill, C

    2007-01-01

    Objective To analyse the effect of external radiation exposure on the mortality of French nuclear workers. Methods A cohort of 29 204 workers employed between 1950 and 1994 at the French Atomic Energy Commission (Commissariat à l'Energie Atomique (CEA)) or at the General Company of Nuclear Fuel (COmpagnie GEnérale des MAtières nucléaires (Cogema, now Areva NC)) was followed up for an average of 17.8 years. Standardised mortality ratios (SMRs) were computed with reference to French mortality rates. Dose‐effect relationship were analysed through trend tests and Poisson regression, with linear and log‐linear models. Results The mean exposure to X and gamma radiation was 8.3 mSv (16.9 mSv for exposed worker population). A total of 1842 deaths occurred between 1968 and 1994. A healthy worker effect was observed, the number of deaths in the cohort being 59% of the number expected from national mortality statistics. Among the 21 main cancer sites studied, a statistically significant excess was observed only for skin melanoma, and an excess of borderline statistical significance was observed for multiple myeloma. A dose‐effect relationship was observed for leukaemia after exclusion of chronic lymphoid leukaemia (CLL). The relative risk observed for non‐CLL leukaemia, n = 20, was 4.1 per 100 mSv (90% CI 1.4 to 12.2), linear model and 2.2 per 100 mSv (90% CI 1.2 to 3.3), log‐linear model. Significant dose‐effect relationship were also observed for causes of deaths associated with alcohol consumption: mouth and pharynx cancer, cirrhosis and alcoholic psychosis and external causes of death. Conclusion The risk of leukaemia increases with increasing exposure to external radiation; this is consistent with published results on other nuclear workers cohorts. PMID:17522135

  13. An enzyme-linked immunosorbent assay to detect PCR products of the rfbS gene from serogroup D salmonellae: a rapid screening prototype.

    PubMed Central

    Luk, J M; Kongmuang, U; Tsang, R S; Lindberg, A A

    1997-01-01

    We describe a digoxigenin-based enzyme-linked immunosorbent assay (DIG-ELISA) following a PCR to detect the amplified lipopolysaccharide rfbS gene as a means for rapid screening of serogroup D salmonellae in stool specimens. For pure bacterial cultures, the sensitivity of the PCR DIG-ELISA was approximately 10 bacteria. In the presence of stool materials, the salmonellae were first isolated by an immunomagnetic separation technique with an O9-specific monoclonal antibody. MATy-O9, followed by PCR and DIG-ELISA. The corresponding sensitivity was about 10 to 100 bacteria. To evaluate the assay performance clinically, 203 stool samples from patients with diarrhea were subjected to the routine culture techniques and the PCR ELISA method with overnight enrichment. The conventional culture method identified 145 salmonellae (31 serogroup B, 27 serogroup C, 83 serogroup D, and 5 serogroup E isolates) and 58 non-salmonella bacteria. The PCR ELISA method correctly identified all 82 serogroup D salmonellae (A405 by ELISA, 2.54 +/- 0.74) but was negative for the other Salmonella serogroups (A405, 0.26 +/- 0.08; n = 63) and non-Salmonella isolates (A405, 0.16 +/- 0.04; n = 58). In order to obtain a visible result, the assay takes approximately 6 h (PCR, 4 h; ELISA, 2 h), along with brief enrichment cultivation of the samples (from 4 to 16 h). Thus, the PCR DIG-ELISA offers a fast, accurate, semiquantitative means of detecting infectious agents such as salmonellae, and future robotic automation is possible. PMID:9041418

  14. Neuronal Calcium Sensor 1 Has Two Variants with Distinct Calcium Binding Characteristics.

    PubMed

    Wang, Baisheng; Boeckel, Göran R; Huynh, Larry; Nguyen, Lien; Cao, Wenxiang; De La Cruz, Enrique M; Kaftan, Edward J; Ehrlich, Barbara E

    2016-01-01

    Neuronal calcium sensor-1 (NCS-1 Var1) is a calcium-binding protein expressed in most tissues. We examined a poorly characterized variant of NCS-1 (Var2), identified only in humans where the N-terminal 22 amino acid residues of native NCS-1(MGKSNSKLKPEVVEELTRKTY) were replaced with 4 different residues (MATI). Because alterations in the level of expression of NCS-1 Var1 and the expression of NCS-1 variants have been correlated with several neurological diseases, the relative expression and functional role of NCS-1 Var2 was examined. We found that NCS-1 Var2 mRNA levels are not found in mouse tissues and are expressed at levels ~1000-fold lower than NCS-1 Var1 in three different human cell lines (SHSY5Y, HEK293, MB231). Protein expression of both variants was only identified in cell lines overexpressing exogenous NCS-1 Var2. The calcium binding affinity is ~100 times weaker in purified NCS-1 Var2 than NCS-1 Var1. Because truncation of NCS-1 Var1 has been linked to functional changes in neurons, we determined whether the differing properties of the NCS-1 variants could potentially contribute to the altered cell function. In contrast to previous reports showing that overexpression of NCS-1 Var1 increases calcium-dependent processes, functional differences in cells overexpressing NCS-1 Var2 were undetectable in assays for cell growth, cell death and drug (paclitaxel) potency. Our results suggest that NCS-1 Var1 is the primary functional version of NCS-1. PMID:27575489

  15. Greffe de cornée: expérience du service d'ophtalmologie au CHU Mohammed VI de Marrakech, Maroc

    PubMed Central

    Belghmaidi, Sarah; Hajji, Ibtissam; Soummane, Hasna; Ennassiri, Wiam; Essafi, Hafsa; Moutaouakil, Abdeljalil

    2016-01-01

    La kératoplastie transfixiante est l'une des plus fréquentes des greffes de tissus et transplantations d'organes. Le but de notre travail est de rapporter notre expérience en matière de greffe de cornée. C'est une étude prospective de 195 patients ayant bénéficié d'une greffe de cornée sur une période allant d'aout 2009 à Août 2015. Le recul moyen est de 21 mois. Les indications de la greffe étaient le kératocône 33.8%, les séquelles de traumatisme 10.7%, la kératopathie bulleuse 19.5%, les dystrophies héréditaires 10.7%, et les kératites herpétiques 9.2%. L'acuité visuelle initiale était inférieure à 1/10 dans 90% des cas. Nous avons observé une réaction de rejet dans 19 yeux dont 14 étaient récupérables, 33 hypertonies oculaires, 20cataracte, et 2 décollements descmetiques. La greffe de cornée apparaît comme une intervention donnant de bons résultats anatomiques et fonctionnels. Les résultats ne doivent pas occulter une surveillance post opératoire étroite et régulière pour dépister à temps d’éventuelles complications, en particulier le rejet de greffe. PMID:27303575

  16. A simple approximation of moments of the quasi-equilibrium distribution of an extended stochastic theta-logistic model with non-integer powers.

    PubMed

    Bhowmick, Amiya Ranjan; Bandyopadhyay, Subhadip; Rana, Sourav; Bhattacharya, Sabyasachi

    2016-01-01

    The stochastic versions of the logistic and extended logistic growth models are applied successfully to explain many real-life population dynamics and share a central body of literature in stochastic modeling of ecological systems. To understand the randomness in the population dynamics of the underlying processes completely, it is important to have a clear idea about the quasi-equilibrium distribution and its moments. Bartlett et al. (1960) took a pioneering attempt for estimating the moments of the quasi-equilibrium distribution of the stochastic logistic model. Matis and Kiffe (1996) obtain a set of more accurate and elegant approximations for the mean, variance and skewness of the quasi-equilibrium distribution of the same model using cumulant truncation method. The method is extended for stochastic power law logistic family by the same and several other authors (Nasell, 2003; Singh and Hespanha, 2007). Cumulant truncation and some alternative methods e.g. saddle point approximation, derivative matching approach can be applied if the powers involved in the extended logistic set up are integers, although plenty of evidence is available for non-integer powers in many practical situations (Sibly et al., 2005). In this paper, we develop a set of new approximations for mean, variance and skewness of the quasi-equilibrium distribution under more general family of growth curves, which is applicable for both integer and non-integer powers. The deterministic counterpart of this family of models captures both monotonic and non-monotonic behavior of the per capita growth rate, of which theta-logistic is a special case. The approximations accurately estimate the first three order moments of the quasi-equilibrium distribution. The proposed method is illustrated with simulated data and real data from global population dynamics database. PMID:26561778

  17. La Sociéte Française d'Exobiologie

    NASA Astrophysics Data System (ADS)

    Raulin, F.

    2010-12-01

    L'exobiologie est une jeune science, très pluridisciplinaire qui, de façon générale, a pour objet l'étude de la vie dans l'univers. Plus précisément, elle inclut l'étude des conditions et des processus qui ont permis l'émergence du vivant sur notre planète, et ont pu oumo pourraient le permettre ailleurs, l'étude de l'évolution de la matière organique vers des structures complexes dans l'univers, et les recherches qui concernent la distribution de la vie sous toutes les formes qu'elle pourrait revêtir, et son évolution. La Société Française d'Exobiologie a été fondée en mai 2009. Elle a pour buts principaux de fédérer les recherches en exobiologie au niveau français en facilitant l'établissement de contacts interdisciplinaires entre les chercheurs français et faire connaître et expliquer l'exobiologie pour satisfaire la demande socio culturelle provenant d'un public diversifié, par le biais de conférences, d'ateliers, d'expositions. La SFE est reconnue comme Société savante. Elle compte actuellement 140 membres et vient d'organiser son premier colloque national d'exobiologie à Biarritz.

  18. The inhibitive effect of some quaternary ammonium salts towards corrosion of aluminium in hydrochloric acid solution

    NASA Astrophysics Data System (ADS)

    Mohamed, A.-M. K.; Al-Nadjm, A.; Fouda, A.-A. S.

    1998-10-01

    The inhibitive action of some quaternary ammonium salts towards the corrosion of aluminium in hydrochloric acid was tested by thermometric, mass loss and polarization measurements. Parallelism between the different methods was established. It is suggested that the tested compounds act as cathodic inhibitors. The inhibitors appear to function through adsorption, following the Temkin adsorption isotherm. The values of free energy of adsorption have been calculated and discussed. The inhibitor character of the additives depends upon the concentration as well as the composition of the inhibitor. Within the given homolegous series the contribution of the functional group to adsorption increases with the length of the chain. The aim of this article is to throw some light on the mechanism of inhibition of these bulky molecules on the corrosion of aluminium in hydrochloric acid. L'action inhibitrice de certains sels d'ammonium quaternaires vis-à-vis de la corrosion de l'aluminium dans l'acide chlorhydrique en solution a été testée par des mesures thermiques de perte de matière et de polarisation. Il est suggéré que les composés testés agissent comme des inhibiteurs cathodiques, fonctionnant par adsorption suivant l'isotherme de Temkin. Les énergies libres d'adsorption ont été calculées et discutées. Le caractère inhibiteur des additifs dépend aussi bien de leur concentration que de leur composition. Pour une série d'inhibiteurs homologues, la contribution à l'adsorption du groupe fonctionnel augmente avec la longueur de la chaîne. Le but de cet article est de mieux comprendre le mécanisme d'inhibition de ces grosses molécules sur la corrosion de l'aluminium dans l'acide chlorhydrique.

  19. Can shale safely host US nuclear waste?

    USGS Publications Warehouse

    Neuzil, C.E.

    2013-01-01

    "Even as cleanup efforts after Japan’s Fukushima disaster offer a stark reminder of the spent nuclear fuel (SNF) stored at nuclear plants worldwide, the decision in 2009 to scrap Yucca Mountain as a permanent disposal site has dimmed hope for a repository for SNF and other high-level nuclear waste (HLW) in the United States anytime soon. About 70,000 metric tons of SNF are now in pool or dry cask storage at 75 sites across the United States [Government Accountability Office, 2012], and uncertainty about its fate is hobbling future development of nuclear power, increasing costs for utilities, and creating a liability for American taxpayers [Blue Ribbon Commission on America’s Nuclear Future, 2012].However, abandoning Yucca Mountain could also result in broadening geologic options for hosting America’s nuclear waste. Shales and other argillaceous formations (mudrocks, clays, and similar clay-rich media) have been absent from the U.S. repository program. In contrast, France, Switzerland, and Belgium are now planning repositories in argillaceous formations after extensive research in underground laboratories on the safety and feasibility of such an approach [Blue Ribbon Commission on America’s Nuclear Future, 2012; Nationale Genossenschaft für die Lagerung radioaktiver Abfälle (NAGRA), 2010; Organisme national des déchets radioactifs et des matières fissiles enrichies, 2011]. Other nations, notably Japan, Canada, and the United Kingdom, are studying argillaceous formations or may consider them in their siting programs [Japan Atomic Energy Agency, 2012; Nuclear Waste Management Organization (NWMO), (2011a); Powell et al., 2010]."

  20. Le LHC, un tunnel cosmique

    ScienceCinema

    None

    2011-10-06

    Et si la lumière au bout du tunnel du LHC était cosmique ? En d?autres termes, qu?est-ce que le LHC peut nous apporter dans la connaissance de l?Univers ? Car la montée en énergie des accélérateurs de particules nous permet de mieux appréhender l?univers primordial, chaud et dense. Mais dans quel sens dit-on que le LHC reproduit des conditions proches du Big bang ? Quelles informations nous apporte-t-il sur le contenu de l?Univers ? La matière noire est-elle détectable au LHC ? L?énergie noire ? Pourquoi l?antimatière accumulée au CERN est-elle si rare dans l?Univers ? Et si le CERN a bâti sa réputation sur l?exploration des forces faibles et fortes qui opèrent au sein des atomes et de leurs noyaux, est-ce que le LHC peut nous apporter des informations sur la force gravitationnelle qui gouverne l?évolution cosmique ? Depuis une trentaine d?années, notre compréhension de l?univers dans ses plus grandes dimensions et l?appréhension de son comportement aux plus petites distances sont intimement liées : en quoi le LHC va-t-il tester expérimentalement cette vision unifiée ? Tout public, entrée libre / Réservations au +41 (0)22 767 76 76

  1. Neuronal Calcium Sensor 1 Has Two Variants with Distinct Calcium Binding Characteristics

    PubMed Central

    Wang, Baisheng; Boeckel, Göran R.; Huynh, Larry; Nguyen, Lien; Cao, Wenxiang; De La Cruz, Enrique M.; Kaftan, Edward J.

    2016-01-01

    Neuronal calcium sensor-1 (NCS-1 Var1) is a calcium-binding protein expressed in most tissues. We examined a poorly characterized variant of NCS-1 (Var2), identified only in humans where the N-terminal 22 amino acid residues of native NCS-1(MGKSNSKLKPEVVEELTRKTY) were replaced with 4 different residues (MATI). Because alterations in the level of expression of NCS-1 Var1 and the expression of NCS-1 variants have been correlated with several neurological diseases, the relative expression and functional role of NCS-1 Var2 was examined. We found that NCS-1 Var2 mRNA levels are not found in mouse tissues and are expressed at levels ~1000-fold lower than NCS-1 Var1 in three different human cell lines (SHSY5Y, HEK293, MB231). Protein expression of both variants was only identified in cell lines overexpressing exogenous NCS-1 Var2. The calcium binding affinity is ~100 times weaker in purified NCS-1 Var2 than NCS-1 Var1. Because truncation of NCS-1 Var1 has been linked to functional changes in neurons, we determined whether the differing properties of the NCS-1 variants could potentially contribute to the altered cell function. In contrast to previous reports showing that overexpression of NCS-1 Var1 increases calcium-dependent processes, functional differences in cells overexpressing NCS-1 Var2 were undetectable in assays for cell growth, cell death and drug (paclitaxel) potency. Our results suggest that NCS-1 Var1 is the primary functional version of NCS-1. PMID:27575489

  2. Low-dose methotrexate inhibits methionine S-adenosyltransferase in vitro and in vivo.

    PubMed

    Wang, Yi-Cheng; Chiang, En-Pei Isabel

    2012-01-01

    Methionine S-adenosyltransferase (MAT) catalyzes the only reaction that produces the major methyl donor in mammals. Low-dose methotrexate is the most commonly used disease-modifying antirheumatic drug in human rheumatic conditions. The present study was conducted to test the hypothesis that methotrexate inhibits MAT expression and activity in vitro and in vivo. HepG2 cells were cultured under folate restriction or in low-dose methotrexate with and without folate or methionine supplementation. Male C57BL/6J mice received methotrexate regimens that reflected low-dose clinical use in humans. S-adenosylmethionine and MAT genes, proteins and enzyme activity levels were determined. We found that methionine or folate supplementation greatly improved S-adenosylmethionine in folate-depleted cells but not in cells preexposed to methotrexate. Methotrexate but not folate depletion suppressed MAT genes, proteins and activity in vitro. Low-dose methotrexate inhibited MAT1A and MAT2A genes, MATI/II/III proteins and MAT enzyme activities in mouse tissues. Concurrent folinate supplementation with methotrexate ameliorated MAT2A reduction and restored S-adenosylmethionine in HepG2 cells. However, posttreatment folinate rescue failed to restore MAT2A reduction or S-adenosylmethionine level in cells preexposed to methotrexate. Our results provide both in vitro and in vivo evidence that low-dose methotrexate inhibits MAT genes, proteins, and enzyme activity independent of folate depletion. Because polyglutamated methotrexate stays in the hepatocytes, if methotrexate inhibits MAT in the liver, then the efficacy of clinical folinate rescue with respect to maintaining hepatic S-adenosylmethionine synthesis and normalizing the methylation reactions would be limited. These findings raise concerns on perturbed methylation reactions in humans on low-dose methotrexate. Future studies on the clinical physiological consequences of MAT inhibition by methotrexate and the potential benefits of S

  3. CCQM-K86/P113.1: Relative quantification of genomic DNA fragments extracted from a biological tissue

    NASA Astrophysics Data System (ADS)

    Corbisier, P.; Vincent, S.; Schimmel, H.; Kortekaas, A.-M.; Trapmann, S.; Burns, M.; Bushell, C.; Akgoz, M.; Akyürek, S.; Dong, L.; Fu, B.; Zhang, L.; Wang, J.; Pérez Urquiza, M.; Bautista, J. L.; Garibay, A.; Fuller, B.; Baoutina, A.; Partis, L.; Emslie, K.; Holden, M.; Chum, W. Y.; Kim, H.-H.; Phunbua, N.; Milavec, M.; Zel, J.; Vonsky, M.; Konopelko, L. A.; Lau, T. L. T.; Yang, B.; Hui, M. H. K.; Yu, A. C. H.; Viroonudomphol, D.; Prawettongsopon, C.; Wiangnon, K.; Takabatake, R.; Kitta, K.; Kawaharasaki, M.; Parkes, H.

    2012-01-01

    Key comparison CCQM-K86 was performed to demonstrate and document the capacity of interested national metrology institutes (NMIs) and designated institutes (DIs) in the determination of the relative quantity of two specific genomic DNA fragments present in a biological tissue. The study provides the support for the following measurement claim: "Quantification of the ratio of the number of copies of specified intact sequence fragments of a length in the range of 70 to 100 nucleotides in a single genomic DNA extract from ground maize seed materials". The study was carried out under the auspices of the Bioanalysis Working Group (BAWG) of the Comité Consultatif pour la Quantité de Matière (CCQM) and was piloted by the Institute for Reference Materials and Methods (IRMM) in Geel (Belgium). The following laboratories (in alphabetical order) participated in this key comparison: AIST (Japan), CENAM (Mexico), DMSc (Thailand), GLHK (Hong Kong), IRMM (European Union), KRISS (Republic of Korea), LGC (United Kingdom), MIRS/NIB (Slovenia), NIM (PR China), NIST (USA), NMIA (Australia), TÜBITAK UME (Turkey) and VNIIM (Russian Federation). The following laboratories (in alphabetical order) participated in a pilot study that was organized in parallel: LGC (United Kingdom), PKU (PR China), NFRI (Japan) and NIMT (Thailand). Good agreement was observed between the reported results of eleven participants. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCQM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

  4. La prévention des blessures non intentionnelles chez les enfants et adolescents autochtones au Canada

    PubMed Central

    Banerji, Anna

    2012-01-01

    RÉSUMÉ Les blessures non intentionnelles sont la principale cause de décès chez les enfants et adolescents autochtones canadiens, à un taux de trois à quatre fois la moyenne nationale. Non seulement les décès et les blessures invalidantes dévastent les familles et les communautés, mais elles font également d’énormes ravages sur les ressources de santé. L’absence de statistiques, de surveillance continue ou de programmes de prévention des blessures à l’égard des enfants et adolescents autochtones exacerbe les coûts en matière de main-d’œuvre et de santé. Les communautés autochtones sont hétérogènes sur le plan culturel, qu’il s’agisse de l’accès aux ressources ou même des risques et des types de blessures. Pourtant, en général, ces communautés sont beaucoup plus susceptibles d’être pauvres, d’habiter dans un logement insalubre et d’éprouver de la difficulté à accéder aux soins de santé, des facteurs qui accroissent le risque et les conséquences des blessures. Il existe un besoin urgent de surveillance des blessures, de recherche, de renforcement des capacités, de diffusion des connaissances et de programmes de prévention des blessures qui sont axés sur les populations autochtones. Pour prévenir les blessures de manière efficace, il faut adopter des démarches multidisciplinaires, coopératives et durables, fondées sur des pratiques exemplaires, tout en étant spécifiques et sensibles sur le plan culturel et linguistique.

  5. Microbial communities in the deep subsurface

    NASA Astrophysics Data System (ADS)

    Krumholz, Lee R.

    geochemical processes and to develop new approaches to subsurface remediation. Résumé La diversité des populations et des communautés microbiennes dans le sol et le sous-sol est présentée dans cet article. Les chercheurs s'interrogent fréquemment sur la diversité microbienne du sous-sol, sur les interactions entre organismes et sur les mécanismes qui permettent le maintien des communautés microbiennes souterraines. Il existe des communautés microbiennes anérobies hétérotrophes dans des grès ou dans des sédiments sableux relativement perméables, à proximité de dépôts riches en matières organiques. Ces micro-organismes semblent se maintenir grâce à la consommation de composés organiques provenant des dépôts organiques voisins. Les sources de matériel organique jouant le rôle de donneur d'électrons sont constituées par des sédiments éocènes riches en lignite situés sous la plaine littorale du Texas, les schistes riches en matières organiques du Crétacé du sud-ouest des États-Unis, ainsi que les argiles contenant des matériaux organiques et des bactéries de fermentation de la plaine littorale atlantique. En outre, il existe des communautés fortement diversifiées dans des régions où aucune source de matière organique n'existe, mais où sont présentes des roches ignées. Le sous-sol riche en basalte de la vallée de la Columbia au Canada et les régions granitiques de Suède en sont des exemples. Ces communautés microbiennes souterraines semblent se maintenir par l'action de bactéries lithotrophes se développant grâce à l'hydrogène qui est produit par réactions chimiques dans le sous-sol. Il existe d'autres communautés microbiennes de profondeur dans les sédiments profonds des océans. Ces systèmes sont souvent associés à un métabolisme anérobie et à une réduction des sulfates. La colonisation microbienne s'étend jusqu'à des profondeurs où les températures élevées limitent leur capacité de survie. Les sources d

  6. Microbial communities in the deep subsurface

    NASA Astrophysics Data System (ADS)

    Krumholz, Lee R.

    geochemical processes and to develop new approaches to subsurface remediation. Résumé La diversité des populations et des communautés microbiennes dans le sol et le sous-sol est présentée dans cet article. Les chercheurs s'interrogent fréquemment sur la diversité microbienne du sous-sol, sur les interactions entre organismes et sur les mécanismes qui permettent le maintien des communautés microbiennes souterraines. Il existe des communautés microbiennes anérobies hétérotrophes dans des grès ou dans des sédiments sableux relativement perméables, à proximité de dépôts riches en matières organiques. Ces micro-organismes semblent se maintenir grâce à la consommation de composés organiques provenant des dépôts organiques voisins. Les sources de matériel organique jouant le rôle de donneur d'électrons sont constituées par des sédiments éocènes riches en lignite situés sous la plaine littorale du Texas, les schistes riches en matières organiques du Crétacé du sud-ouest des États-Unis, ainsi que les argiles contenant des matériaux organiques et des bactéries de fermentation de la plaine littorale atlantique. En outre, il existe des communautés fortement diversifiées dans des régions où aucune source de matière organique n'existe, mais où sont présentes des roches ignées. Le sous-sol riche en basalte de la vallée de la Columbia au Canada et les régions granitiques de Suède en sont des exemples. Ces communautés microbiennes souterraines semblent se maintenir par l'action de bactéries lithotrophes se développant grâce à l'hydrogène qui est produit par réactions chimiques dans le sous-sol. Il existe d'autres communautés microbiennes de profondeur dans les sédiments profonds des océans. Ces systèmes sont souvent associés à un métabolisme anérobie et à une réduction des sulfates. La colonisation microbienne s'étend jusqu'à des profondeurs où les températures élevées limitent leur capacité de survie. Les sources d

  7. PILOT STUDY: An international comparison of mass fraction purity assignment of theophylline: CCQM Pilot Study CCQM-P20.e (Theophylline)

    NASA Astrophysics Data System (ADS)

    Westwood, S.; Josephs, R.; Daireaux, A.; Wielgosz, R.; Davies, S.; Kang, M.; Ting, H.; Phillip, R.; Malz, F.; Shimizu, Y.; Frias, E.; Pérez, M.; Apps, P.; Fernandes-Whaley, M.; DeVos, B.; Wiangnon, K.; Ruangrittinon, N.; Wood, S.; Duewer, D.; Schantz, M.; Bedner, M.; Hancock, D.; Esker, J.

    2009-01-01

    Under the auspices of the Organic Analysis Working Group (OAWG) of the Comité Consultatif pour la Quantité de Matière (CCQM) a laboratory comparison, CCQM-P20.e, was coordinated by the Bureau International de Poids et Mesures (BIPM) in 2006/2007. Nine national measurement institutes, two expert laboratories and the BIPM participated in the comparison. Participants were required to assign the mass fraction of theophylline present as the main component in two separate study samples (CCQM-P20.e.1 and CCQM-P20.e.2). CCQM-P20.e.1 consisted of a high-purity theophylline material obtained from a commercial supplier. CCQM-P20.e.2 consisted of theophylline to which known amounts of the related structure compounds theobromine and caffeine were added in a homogenous, gravimetrically controlled fashion. For the CCQM-P20.e.2 sample it was possible to estimate gravimetric reference values both for the main component and for the two spiked impurities. In addition to assigning the mass fraction content of theophylline for both materials, participants were requested but not obliged to provide mass fraction estimates for the minor components they identified in each sample. The results reported by the study participants for the mass fraction content of theophylline in both materials showed good levels of agreement both with each other and with the gravimetric reference value assigned to the CCQM-P20.e.2 material. There was also satisfactory agreement overall, albeit at higher levels of uncertainty, in the quantification data reported for the minor components present in both samples. In the few cases where a significant deviation was observed from the consensus values reported by the comparison participants or gravimetric reference values where these where available, they appeared to arise from the use of non-optimal chromatographic separation conditions. The results demonstrate the feasibility for laboratories to assign mass fraction content with associated absolute expanded

  8. Case Studies On Recent Stark Broadening Calculations And Stark-B Database Development In The Framework Of The European Project Vamdc (Virtual Atomic And Molecular Data Center)

    NASA Astrophysics Data System (ADS)

    Sahal-Bréchot, S.

    2010-07-01

    Stark broadening theories and calculations have been extensively developed for about 50 years. The theory can now be considered as mature for many applications, especially for accurate spectroscopic diagnostics and modelisation. In astrophysics, with the increasing sensitivity of observations and spectral resolution, in all domains of wavelengths from far UV to infrared, it has become possible to develop realistic models of interiors and atmospheres of stars and interpret their evolution. For hot stars, especially white dwarfs, Stark broadening is the dominant collisional line broadening process. This requires the knowledge of numerous collisional line profiles, especially for very weakly abundant atoms and ions that are used as useful probes for modern spectroscopic diagnostics. Hence, calculations based on a simple but enough accurate and fast method is indispensable for obtaining numerous results. Ab initio quantum calculations are also a useful domain of development, especially for ion emitters. Nowadays, the access to such data via an on line database becomes indispensable. The Virtual Atomic and Molecular Data Centre (VAMDC, http://www.vamdc.eu) is a European Union funded collaboration between groups involved in the generation and use of atomic and molecular data. VAMDC aims to build a secure, documented, flexible and interoperable e-science environment-based interface to existing atomic and molecular data. In this framework, the Stark-B (http://starkb.obspm.fr) database, which is a part of VAMDC, is a collaborative project between the Astronomical Observatory of Belgrade and the Laboratoire d'Etude du Rayonnement et de la Matière en Astrophysique (LERMA). It is a database of calculated widths and shifts of isolated lines of atoms and ions due to electron and ion collisions (i.e. impacts are separated in time). This database is devoted to modelisation and spectroscopic diagnostics of stellar atmospheres and envelopes. In addition, it is relevant to

  9. KEY COMPARISON: Key comparison CCQM-K60: Total selenium and selenomethionine in selenised wheat flour

    NASA Astrophysics Data System (ADS)

    Goenaga Infante, Heidi; Sargent, Mike

    2010-01-01

    Key comparison CCQM-K60 was performed to assess the analytical capabilities of national metrology institutes (NMIs) to accurately quantitate the mass fraction of selenomethionine (SeMet) and total selenium (at low mg kg-1 levels) in selenised wheat flour. It was organized by the Inorganic Analysis Working Group (IAWG) of the Comité Consultatif pour la Quantité de Matière (CCQM) as a follow-up key comparison to the previous pilot study CCQM-P86 on selenised yeast tablets. LGC Limited (Teddington, UK) and the Institute for National Measurement Standards, National Research Council Canada (NRCC, Ottawa, Canada) acted as the coordinating laboratories. CCQM-K60 was organized in parallel with a pilot study (CCQM-P86.1) involving not only NMIs but also expert laboratories worldwide, thus enabling them to assess their capabilities, discover problems and learn how to modify analytical procedures accordingly. Nine results for total Se and four results for SeMet were reported by the participant NMIs. Methods used for sample preparation were microwave assisted acid digestion for total Se and multiple-step enzymatic hydrolysis and hydrolysis with methanesulfonic acid for SeMet. For total Se, detection techniques included inductively coupled plasma mass spectrometry (ICP-MS) with external calibration, standard additions or isotope dilution analysis (IDMS); instrumental neutron activation analysis (INAA); and graphite furnace atomic absorption spectrometry (GFAAS) with external calibration. For determination of SeMet in the wheat flour sample, the four NMIs relied upon measurements using species-specific IDMS (using 76Se-enriched SeMet) with HPLC-ICP-MS. Eight of the nine participating NMIs reported results for total Se within 3.5% deviation from the key comparison reference value (KCRV). For SeMet, the four participating NMIs reported results within 3.2% deviation from the KCRV. This shows that the performance of the majority of the CCQM-K60 participants was very good

  10. Multi-State Vibronic Interactions in Fluorinated Benzene Radical Cations.

    NASA Astrophysics Data System (ADS)

    Faraji, S.; Köppel, H.

    2009-06-01

    Conical intersections of potential energy surfaces have emerged as paradigms for signalling strong nonadiabatic coupling effects. An important class of systems where some of these effects have been analyzed in the literature, are the benzene and benzenoid cations, where the electronic structure, spectroscopy, and dynamics have received great attention in the literature. In the present work a brief overview is given over our theoretical treatments of multi-mode and multi-state vibronic interactions in the benzene radical cation and some of its fluorinated derivatives. The fluorobenzene derivatives are of systematic interest for at least two different reasons. (1) The reduction of symmetry by incomplete fluorination leads to a disappearance of the Jahn-Teller effect present in the parent cation. (2) A specific, more chemical effect of fluorination consists in the energetic increase of the lowest σ-type electronic states of the radical cations. The multi-mode multi-state vibronic interactions between the five lowest electronic states of the fluorobenzene radical cations are investigated theoretically, based on ab initio electronic structure data, and employing the well-established linear vibronic coupling model, augmented by quadratic coupling terms for the totally symmetric vibrational modes. Low-energy conical intersections, and strong vibronic couplings are found to prevail within the set of tilde{X}-tilde{A} and tilde{B}-tilde{C}-tilde{D} cationic states, while the interactions between these two sets of states are found to be weaker and depend on the particular isomer. This is attributed to the different location of the minima of the various conical intersections occurring in these systems. Wave-packet dynamical simulations for these coupled potential energy surfaces, utilizing the powerful multi-configuration time-dependent Hartree method are performed. Ultrafast internal conversion processes and the analysis of the MATI and photo-electron spectra shed new light

  11. Les conseils et la prise en charge en prévision d’une très grande prématurité

    PubMed Central

    Jefferies, Ann L; Kirpalani, Haresh M

    2012-01-01

    RÉSUMÉ En cas de très grande prématurité (accouchement entre la 220/7 et la 256/7 semaine d’âge gestationnel [AG]), les parents doivent souvent faire des choix complexes sur les soins de leur nourrisson. Les professionnels de la santé ont un rôle important à jouer en matière d’information, d’orientation et de soutien. Les parents qui font face à la naissance d’un très grand prématuré doivent avoir la possibilité de rencontrer les dispensateurs de soins obstétricaux et pédiatriques ou néonatals pour recevoir de l’information exacte sur le pronostic de leur nourrisson, transmise avec clarté et compassion. La prise de décision entre les parents et les professionnels de la santé doit découler d’un processus éclairé et partagé, et toutes les décisions de prise en charge doivent être consignées. Il est important de consulter un centre périnatal de soins tertiaires et d’y prévoir le transfert de la mère et du fœtus afin d’assurer leurs soins. Puisque la survie des nourrissons venus au monde avant 22 semaines complètes d’AG demeure rare, il est recommandé de ne pas intervenir, mais à 23, 24 et 25 semaines d’AG, il faut adapter les conseils sur les issues et la prise de décision à chaque nourrisson et à sa famille, compte tenu des facteurs qui influent sur le pronostic. Il faut prodiguer des soins palliatifs compatissants à tous les grands prématurés qui ne sont pas réanimés ou qui ne répondent pas à la réanimation.

  12. Comparaison de deux scores pronostiques dans les hémorragies digestives hautes non variqueuses dans un centre hospitalier d'Antananarivo

    PubMed Central

    Rakotondrainibe, Aurélia; Randrianambinina, Thierry Pierre; Randriamizao, Harifetra Mamy Richard; Rasoaherinomenjanahary, Fanjandrainy; Randriamiarana, Mialimanana Joël; Samison, Luc Hervé

    2013-01-01

    Il est actuellement recommandé de stratifier les hémorragies digestives hautes, en fonction de leur risque, par des scores pronostiques. L'objectif de cette étude a été d'appliquer ces scores en vue de les comparer, dans un centre hospitalier malgache. Etude prospective sur 419 patients, sur une période entre janvier et décembre 2011, au Centre Hospitalo-Universitaire d'Antananarivo. Les scores de Rockall initial et de Blatchford ont été calculés pour chaque patient présentant une hémorragie digestive haute non variqueuse dont les dossiers été complets, avec notamment la valeur de l'urémie et de l'hémoglobine. Une comparaison de ces deux scores a été faite pour déterminer le pronostic et l’évolution de cette pathologie. 46,3% des dossiers n'avaient pas de valeur d'urémie ni de l'hémoglobine. Les 185 patients retenus, avaient une moyenne d’âge de 48,2 ± 18,2 ans et une prédominance masculine (72,4%). Le risque clinique était élevé dans 62,7% des cas, dont 59,4% ont bénéficié d'une transfusion. Une mortalité de 9,7% a été observée. Le score de Blatchford était plus prédictif du risque clinique par rapport au score de Rockall initial (AUROC = 0,82 vs 0,64; p < 0,0001), mais aussi de la nécessité d'une transfusion (AUROC = 0,79 vs 0,62; p= 0,00013). L'instauration d'un score clinico-biologique est assez limitée par faute de moyens, alors que le score de Blatchford aiderait en matière de pronostic des hémorragies digestives hautes. PMID:24839534

  13. Morbidité et mortalité hospitalière des maladies cardiovasculaires en milieu tropical: exemple d'un centre hospitalier à Lomé (Togo)

    PubMed Central

    Damorou, Findibe; Baragou, Soodougoua; Pio, Machihuede; Afassinou, Yaovi M; N'da, N'kenon W; Pessinaba, Soulemane; Tchérou, Tchaa; Attiogbé, Halé; Ehlan, Koffi; Goeh-Akue, Edem; Yayehd, Komlavi

    2014-01-01

    Introduction Les maladies cardiovasculaires (MCV) occupent une place importante dans la mortalité en Afrique, situation inquiétante traduisant une transition épidémiologique rapide. La connaissance des groupes nosologiques les plus mortelles devrait aider à l’élaboration de politiques en matière de traitement et de prévention. Méthodes Il's agit d une étude rétrospective du 1er janvier 2006 au 31 décembre 2010, ayant inclus les patients hospitalisés pour une MCV selon la classification Internationale des maladies (CIM-10). Résultats La fréquentation hospitalière pour maladie MCV a augmenté au fil du temps; les maladies hypertensives étaient le premier motif d hospitalisation (66.8%). Les autres pathologies fréquentes étaient la maladie thromboembolique (9.1%), les syndromes coronaires aigus (SCA) (7.3%), l'insuffisance cardiaque (5.5%), les cardiomyopathies (5.3%). La majorité des sujets étaient jeunes (âge moyen: 55.1 ans) et il n'y avait pas de corrélation entre la durée d'hospitalisation et l’âge: r = + 0.024, p = 0.09. La mortalité globale était élevée (11%) et les taux de létalité élevés dans le SCA (27.9%), l'embolie pulmonaire (25%) et la péricardite (25%). Conclusion Les MCV sont responsables d'une hospitalisation croissante dans nos hôpitaux. L'absence d unité de soins intensifs cardiologiques et des méthodes de revascularisation coronaire, le manque de personnels qualifiés associés l'inexistence de sécurité sociale expliquent une mortalité élevée dans nos pays en voie de développement qui sans avoir achevé leur transition démographique entre en pleine transition épidémiologique. PMID:25018812

  14. Éthique de la recherche en santé mondiale : la relation Nord-Sud, quel partenariat pour quelle justice sociale ?

    PubMed

    Godard, Béatrice; Hunt, Matthew; Moube, Zéphirin

    2014-03-01

    La recherche en santé mondiale s'inscrit dans une volonté de mobiliser des connaissances au service d'interventions et de politiques publiques pour l'atteinte équitable du bien-être commun, notamment en matière de santé. Elle joue un rôle primordial en ce sens, en favorisant l'implication des communautés et leur autonomisation et de nombreuses lignes directrices supportent un tel partenariat. Néanmoins, certains enjeux éthiques sont liés au financement de la recherche, aux environnements de recherche, à la priorisation des problématiques de recherche, aux mécanismes d'évaluation éthique posent souvent un problème de justice sociale au niveau de la redistribution des ressources et de la reconnaissance des différences culturelles. Comment alors déterminer quelle est la façon « idéale » d'agir en tenant compte de la globalité des individus et du pluralisme culturel des sociétés pour « bien faire », pour satisfaire l'exigence de l'équité? Une réflexion et une démarche éthique demeurent essentielles, ainsi qu'un dialogue entre les chercheurs du Nord et du Sud, et leurs autres partenaires que sont les décideurs, les responsables locaux et les communautés. Un tel dialogue, établi dans un continuum du développement de projets de recherche à leur pérennité, peut grandement contribuer à limiter les problèmes de justice sociale et à viser un développement plus égalitaire des savoirs scientifiques. Plusieurs chercheurs se sont déjà engagés dans cette voie, et leurs initiatives devraient être encouragées pour mettre les nouveaux savoirs au service des populations. PMID:24594489

  15. ICOM2012: 3rd International Conference on the Physics of Optical Materials and Devices (Belgrade, Serbia, 2-6 September 2012)

    NASA Astrophysics Data System (ADS)

    Dramićanin, Miroslav D.; Antić, Željka; Viana, Bruno

    2013-11-01

    The 3rd International Conference on the Physics of Optical Materials and Devices (ICOM2012) was held in Belgrade (Serbia) from 2 to 6 September 2012 (figure 1). The conference was organized by the Vinča Institute of Nuclear Sciences, University of Belgrade (Serbia) and the Laboratoire de Chimie de la Matière Condensée de Paris (France), and supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia and Optical Society of America. ICOM2012 was a follow-up to the two previous, successful ICOM conferences held in Herceg Novi in 2006 and 2009. The conference aimed at providing a forum for scientists in optical materials to debate on: • Luminescent materials and nanomaterials • Hybrid optical materials (organic/inorganic) • Characterization techniques of optical materials • Luminescence mechanisms and energy transfers • Theory and modeling of optical processes • Ultrafast-laser processing of materials • Optical sensors • Medical imaging • Advanced optical materials in photovoltaics and biophotonics • Photothermal and photoacoustic spectroscopy and phenomena The conference stressed the value of a fundamental scientific understanding of optical materials. A particular accent was put on wide band-gap materials in crystalline, glass and nanocrystalline forms. The applications mainly involved lasers, scintillators and phosphors. Rare earth and transition metal ions introduced as dopants in various hosts were considered, and their impact on the optical properties were detailed in several presentations. This volume contains selected contributions of speakers and participants of the ICOM2012 conference. The conference provided a unique opportunity for about 200 scientists from 32 countries to discuss recent progress in the field of optical materials. During the three and half days, 21 invited talks and 52 contributed lectures were given, with a special event in memory of our dear colleague Professor Dr Tsoltan

  16. Les astronomes européens auscultent les cieux avec le plus grand télescope du monde

    NASA Astrophysics Data System (ADS)

    Malbet, F.

    2008-09-01

    À l'heure des projets de télescopes extrêmement grands, l'Europe a déjà une longueur d'avance. Le télescope européen (VLT), en mode interférométrique avec l'instrument AMBER devient le plus grand télescope jamais utilisé dans le domaine optique aussi bien en surface de miroir (plus de 150 m2) qúen finesse de résolution qui atteint celle d'un télescope de 130 m de diamètre. Le journal professionnel Astronomy & Astrophysics a publié en 2007 un numéro spécial qui rapporte les premiers résultats obtenus avec l'instrument AMBER (Astronomical MultiBEam Recombiner) par le très grand télescope européen. Ces articles couvrent pratiquement tous les stades de l'évolution stellaire depuis la formation des étoiles et des planètes jusqu'a l'observation de l'explosion de type nova dans un système stellaire évolué. Ces résultats inédits ont été obtenus en utilisant simultanément 3 des 4 télescopes du VLT basés à l'Observatoire européen austral du mont Paranal au Chili. L'instrument AMBER équipant le VLTI (mode interférométrique du VLT) permet dâatteindre une résolution angulaire inégalée de l'ordre du millième de seconde d'angle autorisant l'observation des astres dans différentes longueurs d'onde, dans l'infrarouge proche. Les astronomes obtiennent donc des observations avec une finesse 13 fois plus importante que celle d'un télescope seul. Il devient alors possible de sonder les régions de formation de planètes, d'observer les vents des étoiles en rotation très rapide, d'étudier les différents types de matières éjectées par une étoile massive, de séparer les deux composantes d'une étoile double serrée et de voir en direct l'évolution d'une nova quelques jours seulement après son explosion.

  17. Development of coffee somatic and zygotic embryos to plants differs in the morphological, histochemical and hydration aspects.

    PubMed

    Etienne, Hervé; Bertrand, Benoît; Georget, Frédéric; Lartaud, Marc; Montes, Fabienne; Dechamp, Eveline; Verdeil, Jean-Luc; Barry-Etienne, Dominique

    2013-06-01

    In Coffea arabica L., the development of direct sowing of somatic embryos (SE) in planting substrate, with subsequent nursery production of plants, has promoted the industrialization of somatic embryogenesis. However, plant conversion rates are still low and require improvements to enhance the cost-effectiveness of commercial micropropagation. With the aim of improving plant regeneration from SE, we studied the morphological and histological criteria and water characteristics during germination and plant conversion of zygotic embryos (ZE) and SE. At the cotyledonary stage, SE produced in a 1 l RITA(®) temporary immersion bioreactor (area 55.8 cm(2)) were morphologically similar in size (2-3 mm) but abnormal as compared with mature ZE. Protein and starch reserve levels were extremely low throughout germination and conversion to plantlets, while the water status remained steady [water content (WC) from 76 to 87%, Ψ from -0.37 to -0.47 MPa, pressure potential from 0.69 to 0.24 MPa]. In ZE, spectacular hydration occurred during the first 3 weeks (WC from 37 to 75%; Ψ from -6.24 to -1.0 MPa). Cotyledons remained undifferentiated for 10 weeks after sowing. Conversely, after only 3 weeks under germination conditions in a RITA(®) bioreactor, spongy and palisade parenchyma and stomata formed in SE cotyledons. The ZE plant conversion was faster than that of SE (14 vs. 22 weeks) and more efficient (rates 96 vs. 55%), with much more substantial hypocotyl and cotyledon development. The use of a new 5 l MATIS(®) bioreactor (area 355 cm(2)), designed especially to favor embryo dispersion and light transmittance to SE, markedly improved the embryo-to-plantlet conversion rate (91%). These results highlight the morphological heterogeneity and lack of protein reserves in SE at the beginning of the germination phase and marked differences in water characteristics. However, they also reveal high phenotypic plasticity, leading to a highly efficient plantlet conversion rate due to

  18. Historical advances in the study of global terrestrial soil organic carbon sequestration.

    PubMed

    Feller, C; Bernoux, M

    2008-01-01

    This paper serves two purposes: it provides a summarized scientific history of carbon sequestration in relation to the soil-plant system and gives a commentary on organic wastes and SOC sequestration. The concept of soil organic carbon (SOC) sequestration has its roots in: (i) the experimental work of Lundegårdh, particularly his in situ measurements of CO2 fluxes at the soil-plant interface (1924, 1927, 1930); (ii) the first estimates of SOC stocks at the global level made by Waksman [Waksman, S.A., 1938. Humus. Origin, Chemical Composition and Importance in Nature, second ed. revised. Williams and Wilkins, Baltimore, p. 526] and Rubey [Rubey, W.W., 1951. Geologic history of sea water. Bulletin of the Geological Society of America 62, 1111-1148]; (iii) the need for models dealing with soil organic matter (SOM) or SOC dynamics beginning with a conceptual SOM model by De Saussure (1780-1796) followed by the mathematical models of Jenny [Jenny, H., 1941. Factors of Soil Formation: a System of Quantitative Pedology. Dover Publications, New York, p. 288], Hénin and Dupuis [Hénin, S., Dupuis, M., 1945. Essai de bilan de la matière organique. Annales d'Agronomie 15, 17-29] and more recently the RothC [Jenkinson, D.S., Rayner, J.H., 1977. The turnover of soil organic matter in some of the Rothamsted classical experiments. Soil Science 123 (5), 298-305] and Century [Parton, W.J., Schimel, D.S., Cole, C.V., Ojima, D.S., 1987. Analysis of factors controlling soil organic matter levels in great plains grasslands. Soil Science Society of America Journal 51 (5), 1173-1179] models. The establishment of a soil C sequestration balance is not straightforward and depends greatly on the origin and the composition of organic matter that is to be returned to the system. Wastes, which are important sources of organic carbon for soils, are taken as an example. For these organic materials the following factors have to be considered: the presence or absence of fossil C, the potential

  19. Évolution des lignes directrices sur le traitement de la dyslipidémie

    PubMed Central

    John Bosomworth, N.

    2014-01-01

    Résumé Objectif Comprendre comment les nouvelles lignes directrices sur la prise en charge du risque cardiovasculaire publiées par l’American Heart Association et l’American College of Cardiology (AHA-ACC) peuvent être interprétées et utilisées dans le contexte canadien. Sources des données Les lignes directrices de l’AHA-ACC ont été examinées, de même que toutes les références. Des recherches indépendantes dans PubMed ont été effectuées pour inclure l’ajout aux statines d’autres antihyperlipidémiants et l’emploi de calculatrices médicales visant à aider le patient à comprendre. Message principal Les nouvelles lignes directrices de l’AHA-ACC s’appuient sur les meilleures données probantes disponibles actuellement en matière de traitement de la dyslipidémie. Cela inclut le risque cardiovasculaire (CV) sur 10 ans comme seuil thérapeutique au lieu du taux de cholestérol des lipoprotéines de faible densité, de même que l’abandon des cibles thérapeutiques de lipoprotéines de faible densité. On met de plus en plus l’accent sur les interventions alimentaires et l’exercice, avec l’amorce d’un effort pour quantifier l’effet de ces interventions. Les statines constituent la principale intervention pharmacologique, et l’ajout d’autres médicaments pour accentuer la baisse lipidique n’est plus recommandé. En ce qui concerne l’application au Canada, les tables de risque de Framingham sont plus appropriées pour évaluer le risque que les équations de cohortes regroupées utilisées aux États-Unis. Les calculatrices du risque de maladie cardiovasculaire (MCV) devraient contenir de l’information sur l’âge cardiovasculaire et devraient pouvoir illustrer le risque et les interventions de rechange afin d’aider le patient à comprendre et de favoriser la prise de décision éclairée. Conclusion L’attention sur les meilleures données probantes concernant le risque CV peut simplifier le traitement de la

  20. Étude ethnobotanique des plantes utilisées dans le traitement du diabète dans la médecine traditionnelle de la région Maritime du Togo

    PubMed Central

    Holaly, Gbekley Efui; Simplice, Karou Damintoti; Charlemagne, Gnoula; Kodjovi, Agbodeka; Kokou, Anani; Tchadjobo, Tchacondo; Amegnona, Agbonon; Komlan, Batawila; Jacques, Simpore

    2015-01-01

    Introduction Les plantes constituent une grande source de principes actifs qui peuvent être utilisés pour traiter de nombreuses maladies, dont le diabète. L'objectif de cette étude était de recenser les plantes utilisées en médecine traditionnelle pour traiter le diabète dans la région Maritime du Togo. Méthodes De janvier 2013 à juin 2014, une enquête ethnobotanique a été réalisée auprès de 164 guérisseurs traditionnels dans la région Maritime par des interviews directes à l'aide d'un questionnaire semi structuré. Résultats Les données recueillies ont permis d'identifier 112 espèces végétales appartenant à 51 familles. Les familles les plus représentées ont été les Caesalpiniaceae / Fabaceae avec 9 espèces, suivie des Euphorbiaceae et des Compositae avec 8 espèces chacune. Les espèces les plus citées ont été Allium sativum, Alium cepa, Guilandina bonduc, Moringa oleifera et de Picralima nitida qui ont eu une valeur usuelle de 0,05. En termes de recettes, 132 recettes sont préparées à partir des 112 espèces de plantes. Les recettes à plantes uniques ont été au nombre de 78, tandis que 54 recettes sont obtenues par des associations de plantes. Les parties de plantes les plus utilisées ont été les feuilles suivies par les racines. La principale méthode de préparation reste la décoction. Conclusion La région maritime du Togo dispose d'une biodiversité floristique importante en matière de plantes antidiabétiques. Ces résultats constituent une bonne base de données pour le criblage biologique dans la recherche de molécules antidiabétiques à base des plantes. PMID:26309469

  1. Catherine Cesarsky - ESO's Next Director General

    NASA Astrophysics Data System (ADS)

    1999-01-01

    The ESO Council has appointed Dr. Catherine Cesarsky as Director General for a five year period, succeeding Professor Riccardo Giacconi, whose term ends this year. Dr. Cesarsky will take up her duties on September 1, 1999, at the ESO Headquarters in Garching (Germany). Dr. Cesarsky was born in France in 1943. She received a degree in Physical Sciences at the University of Buenos Aires and graduated with a PhD in Astronomy in 1971 from Harvard University (Cambridge, Mass., USA). Afterwards she worked at the California Institute of Technology (CALTECH). In 1974, she became a staff member of the Service d'Astrophysique (SAp) , Direction des Sciences de la Matière (DSM), Commissariat à l'Energie Atomique (CEA) (France). She headed the theoretical group of the SAp (1978-1985), was Head of SAp (1985-1993) and has been Director of DSM since 1994. The DSM encompasses, at the CEA, activities of basic research in physics, chemistry, astrophysics and earth sciences and comprises about 3000 scientists, engineers, technicians, etc. Dr. Cesarsky is known for her successful research activities in several central areas of modern astrophysics. The first part of her career was devoted to the high-energy domain. This has involved studies of the propagation and composition of galactic cosmic rays, of matter and fields in the diffuse interstellar medium, as well as the acceleration of particles in astrophysical shocks, e.g. in connection with supernovae. She then turned to infrared astronomy. She is the Principal Investigator of the ISOCAM camera onboard the Infrared Space Observatory (ISO) of the European Space Agency (ESA) and, as such, she leads the ISOCAM central programme. It studies, in a coordinated way, the infrared emission from a variety of galactic and extragalactic sources and is yielding new and exciting results on star formation and galactic evolution. Dr. Cesarsky received the COSPAR (Committee on Space Research) Space Science Award in 1998. She is a member of many

  2. Enjeux de fin de vie dans les cas de démence avancée

    PubMed Central

    Arcand, Marcel

    2015-01-01

    Résumé Objectif Répondre aux questions souvent posées sur la prise en charge de la pneumonie en phase terminale, de l’apport nutritionnel insuffisant et de la déshydratation dans les cas de démence avancée. Sources des données Une recherche a été effectuée dans MEDLINE sur Ovid pour des articles pertinents publiés jusqu’en février 2015. Aucune étude de niveau I n’a été relevée; la plupart des articles fournissaient des preuves de niveaux III. Les suggestions en matière de prise en charge des symptômes s’appuient en partie sur une récente participation à une approche Delphi visant à concevoir une directive pour le soulagement optimal des symptômes chez les patients atteints de pneumonie et de démence. Message principal Les sondes d’alimentation ne sont pas recommandés chez les patients atteints de démence terminale. L’alimentation de confort manuelle est préférable. L’hydratation parentérale pourrait être utile, mais elle peut aussi contribuer à l’inconfort à la fin de la vie. Si les soins buccaux sont adéquats, l’abstention ou la cessation de l’alimentation et de l’hydratation artificielles ne sont généralement pas associées à des manifestations d’inconfort. Puisque la pneumonie est habituellement très inconfortable, les cliniciens doivent être attentifs à la maîtrise des symptômes. La sédation pour maîtriser l’agitation est souvent utile chez les patients atteints de démence terminale. Conclusion Les soins à visée symptomatique sont une option appropriée pour les manifestations terminales de la démence avancée. Les lignes directrices de prise en charge des symptômes proposées s’appuient sur une revue de la littérature et sur un consensus d’experts.

  3. PREFACE: XXIVth Conference of the Danubian Countries on the Hydrological Forecasting and Hydrological Bases of Water Management

    NASA Astrophysics Data System (ADS)

    Brilly, Mitja; Bonacci, Ognjen; Nachtnebel, Peter Hans; Szolgay, Ján; Balint, Gabor

    2008-10-01

    and Gabor Balint Editorial Board International Scientific Committee: P Hubert: Centre d'Informatique Géologique, France H P Nachtnebel: Universität für Bodenkultur Wien, Austria H Weber: Bavarian Water Management Administration, Germany H Moser: Federal Institute of Hydrology, Germany M Domokos: VITUKI, Hungary P Stanciu: National Institute of Meteorology and Hydrology, Romania O Bonacci: University of Split, Croatia S Prohaska: Institute Jaroslav Černi, Belgrade, Serbia J Szolgay: Faculty of Civil Engineering, Bratislava, Slovak Republic K Tzankov: Institute of Meteorology and Hydrology, Sofia, Bulgaria E Soukalová: Czech Hydrometeorological Institute, Czech Republic B Matičič: National Committee on Irrigation and Drainage, Slovenia M Mikoš: University of Ljubljana, Ljubljana, Slovenia J Rakovec: University of Ljubljana, Ljubljana, Slovenia M Brilly: University of Ljubljana, Ljubljana, Slovenia M Veselič: ARAO, Slovenia

  4. Kystes de l'ovaire: score échographique de malignité

    PubMed Central

    Dimassi, Kaouther; Bettaieb, Hajeur; Derbel, Mohammed; Triki, Amel; Gara, Mohammed Faouzi

    2014-01-01

    Les kystes de l'ovaire constituent l'un des motifs les plus fréquents de consultation en gynécologie. L’étape diagnostique repose principalement sur l’échographie. Nous proposons dans ce travail un score échographique reproductible prédictif de malignité. Nous évaluons la fiabilité de ce score après confrontations des données échographiques et histologiques. Il s'agit d'une étude rétrospective réalisée sur une période de 3 ans. Nous avons élaboré un score basé sur les signes échographiques décrits dans la littérature comme prédictifs de malignité et avons classé les examens échographiques préopératoires selon leurs scores respectifs. Les données échographiques étaient comparées aux résultats histologiques et un seuil prédictif de malignité a été déterminé pour le score adopté. 150 patientes ont été colligées. Les deux signes échographiques les plus prédictifs de malignité étaient: les végétations endo-kystiques, avec une Valeur Prédictive Positive (VPP) à 86,67% et une Valeur Prédictive Négative (VPN) à 100%, et le caractère vascularisé au Doppler couleur avec une VPP à 72,52% et une VPN à 100%. Le seuil retenu pour le score proposé était de 6 avec une spécificité de 100%, une sensibilité de 100%, une VPP de 100% et une VPN de 100%. L’échographie joue un rôle décisif dans la conduite à tenir devant une masse ovarienne. Seul un faisceau d'arguments permet d’évoquer la malignité lors de l'examen échographique. L'utilisation de scores basés sur des signes simples, reproductibles augmente la valeur diagnostique de l’échographie en matière de malignité. PMID:25419341

  5. Profil évolutif et pronostic des tumeurs urothéliales de la vessie chez le sujet jeune

    PubMed Central

    Bouzouita, Abderrazak; Saadi, Ahmed; Kerkeni, Walid; Chakroun, Marouene; Cherif, Mohamed; Ayed, Haroun; Selmi, Selim; Derouiche, Amine; Benslama, Riadh Mohamed; Chebil, Mohamed

    2016-01-01

    Résumé But: Les tumeurs urothéliales de la vessie sont rares chez le jeune adulte. Leur profil évolutif et leur pronostic restent matière à contro-verse. Nous rapportons notre expérience à propos de 54 patients. Méthodologie: Entre 1990 et 2010, 54 patients de moins de 40 ans au moment du diagnostic ont été traités pour carcinome à cellules transitionnelles de la vessie. Nous avons étudié le profil évolutif de ces tumeurs en séparant les patients en deux groupes (moins de 30 ans, et 30 à 40 ans). Résultats: La tumeur n’infiltrait pas le muscle vésical dans 37 cas et l’infiltrait dans 17 cas. Pour les tumeurs n’infiltrant pas le muscle vésical, elles étaient de stade Ta dans 20 cas et de grade I–II dans 36 cas. Le pronostic de ces tumeurs était meilleur avant l’âge de 30 ans avec un taux de récidive de 15,3 % sans progression. Pour les patients de 30 à 40 ans, le taux de récidive était de 33,3 %, et 25 % des tumeurs qui ont récidivé ont présenté une progression du stade. Pour les tumeurs infiltrant le muscle vésical, le pronostic était sombre (localement avancées dans neuf cas et métastatiques d’emblée dans cinq cas). Conclusion: Le profil évolutif des tumeurs n’infiltrant pas le muscle vésical a semblé meilleur avant l’âge de 30 ans. Entre 30 et 40 ans, le profil évolutif s’est approché de celui des sujets âgés. Les tumeurs infiltrantes étaient souvent évoluées et agressives, évoquant un potentiel évolutif particulier. PMID:27330577

  6. VizieR Online Data Catalog: Infrared photometry of all known members in Taurus (Esplin+, 2014)

    NASA Astrophysics Data System (ADS)

    Esplin, T. L.; Luhman, K. L.; Mamajek, E. E.

    2016-08-01

    To construct a census of the circumstellar disks in Taurus, we begin by compiling a list of all known members of the region. We adopt the 352 members from Luhman et al. 2010 (cat. J/ApJS/186/111), 4 additional stars that have good evidence of membership from previous studies (Section 5.4), 32 members found in a subsequent survey by K. Luhman (in preparation; 33 if GZ Tau A and B are counted separately), and 25 new members (26 if BS Tau A and B are counted separately) that we have confirmed with spectroscopy (Section 5.3). We also adopt as a member HD 285957, which has a proper motion consistent with that of the Taurus subgroup L1551 (Zacharias et al. 2013, cat. I/322; Luhman et al. 2009ApJ...703..399L) and exhibits evidence of youth in the form of Li absorption (Wichmann et al. 2000A&A...359..181W; Sestito et al. 2008, cat. J/A+A/488/943). We make use of mid-infrared photometry for members of Taurus measured with Spitzer's Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS). We consider the four bands of IRAC (3.6, 4.5, 5.8, and 8.0μm) and the 24μm band of MIPS, which are denoted as [3.6], [4.5], [5.8], [8.0], and [24], respectively. IRAC produced images with a field of view of 5.2'*5.2' and FWHM of 1.6''-1.9'' for [3.6] to [8.0]. MIPS had a field of view of 5.4'*5.4' and a FWHM of 5.9'' for [24]. Photometry from most Spitzer images for most members of Taurus has been measured by Luhman et al. 2010 (cat. J/ApJS/186/111) (see also Hartmann et al. 2005ApJ...629..881H; Luhman et al. 2006, cat. J/ApJ/647/1180; Guieu et al. 2007, cat. 2007A&A...465..855G; Rebull et al. 2010, cat. J/ApJS/186/259). We have measured photometry of the members that were not considered in Luhman et al. 2010 (cat. J/ApJS/186/111) and all known members appearing in Spitzer images that have become publicly available since that study (Astronomical Observation Requests 26470912, 26471168 26477056, 26475264, 26472704, 26473216, and 23272448). These data were

  7. VizieR Online Data Catalog: Infrared photometry of all known members in Taurus (Esplin+, 2014)

    NASA Astrophysics Data System (ADS)

    Esplin, T. L.; Luhman, K. L.; Mamajek, E. E.

    2016-08-01

    To construct a census of the circumstellar disks in Taurus, we begin by compiling a list of all known members of the region. We adopt the 352 members from Luhman et al. 2010 (cat. J/ApJS/186/111), 4 additional stars that have good evidence of membership from previous studies (Section 5.4), 32 members found in a subsequent survey by K. Luhman (in preparation; 33 if GZ Tau A and B are counted separately), and 25 new members (26 if BS Tau A and B are counted separately) that we have confirmed with spectroscopy (Section 5.3). We also adopt as a member HD 285957, which has a proper motion consistent with that of the Taurus subgroup L1551 (Zacharias et al. 2013, cat. I/322; Luhman et al. 2009ApJ...703..399L) and exhibits evidence of youth in the form of Li absorption (Wichmann et al. 2000A&A...359..181W; Sestito et al. 2008, cat. J/A+A/488/943). We make use of mid-infrared photometry for members of Taurus measured with Spitzer's Infrared Array Camera (IRAC) and the Multiband Imaging Photometer for Spitzer (MIPS). We consider the four bands of IRAC (3.6, 4.5, 5.8, and 8.0μm) and the 24μm band of MIPS, which are denoted as [3.6], [4.5], [5.8], [8.0], and [24], respectively. IRAC produced images with a field of view of 5.2'*5.2' and FWHM of 1.6''-1.9'' for [3.6] to [8.0]. MIPS had a field of view of 5.4'*5.4' and a FWHM of 5.9'' for [24]. Photometry from most Spitzer images for most members of Taurus has been measured by Luhman et al. 2010 (cat. J/ApJS/186/111) (see also Hartmann et al. 2005ApJ...629..881H; Luhman et al. 2006, cat. J/ApJ/647/1180; Guieu et al. 2007, cat. 2007A&A...465..855G; Rebull et al. 2010, cat. J/ApJS/186/259). We have measured photometry of the members that were not considered in Luhman et al. 2010 (cat. J/ApJS/186/111) and all known members appearing in Spitzer images that have become publicly available since that study (Astronomical Observation Requests 26470912, 26471168 26477056, 26475264, 26472704, 26473216, and 23272448). These data were

  8. Hydrogeologic uncertainties and policy implications: The Water Consumer Protection Act of Tucson, Arizona, USA

    NASA Astrophysics Data System (ADS)

    Wilson, L. G.; Matlock, W. G.; Jacobs, K. L.

    The 1995 Water Consumer Protection Act of Tucson, Arizona, USA (hereafter known as the Act) was passed following complaints from Tucson Water customers receiving treated Central Arizona Project (CAP) water. Consequences of the Act demonstrate the uncertainties and difficulties that arise when the public is asked to vote on a highly technical issue. The recharge requirements of the Act neglect hydrogeological uncertainties because of confusion between "infiltration" and "recharge." Thus, the Act implies that infiltration in stream channels along the Central Wellfield will promote recharge in the Central Wellfield. In fact, permeability differences between channel alluvium and underlying basin-fill deposits may lead to subjacent outflow. Additionally, even if recharge of Colorado River water occurs in the Central Wellfield, groundwater will become gradually salinized. The Act's restrictions on the use of CAP water affect the four regulatory mechanisms in Arizona's 1980 Groundwater Code as they relate to the Tucson Active Management Area: (a) supply augmentation; (b) requirements for groundwater withdrawals and permitting; (c) Management Plan requirements, particularly mandatory conservation and water-quality issues; and (d) the requirement that all new subdivisions use renewable water supplies in lieu of groundwater. Political fallout includes disruption of normal governmental activities because of the demands in implementing the Act. Résumé La loi de 1995 sur la protection des consommateurs d'eau de Tucson (Arizona, États-Unis) a été promulguée à la suite des réclamations des consommateurs d'eau de Tucson alimentés en eau traitée à partir à la station centrale d'Arizona (CAP). Les conséquences de cette loi montrent les incertitudes et les difficultés qui apparaissent lorsque le public est appeléà voter sur un problème très technique. Les exigences de la loi en matière de recharge négligent les incertitudes hydrogéologiques du fait de la

  9. Groundwater recharge and chemical evolution in the southern High Plains of Texas, USA

    NASA Astrophysics Data System (ADS)

    Fryar, Alan; Mullican, William; Macko, Stephen

    2001-11-01

    és dans les sols des hautes terres par évapotranspiration, avec le ruissellement et l'infiltration dans les playas et les fossés (modifiée localement par l'écoulement en retour des eaux usées et des laisses d'irrigation). Des réactions probables intervenant au cours de la recharge sont l'oxydation de la matière organique, la dissolution et le dégazage du CO2, la dissolution du CaCO3, l'altération des silicates et l'échange de cations. Les données concernant Si et 14C laissent penser qu'il existe une drainance descendante à partir d'aquifères perchés vers l'aquifère des Hautes Plaines. Des modèles vraisemblables de bilan de matière pour l'aquifère des Hautes Plaines prennent en compte des scénarios d'écoulement avec drainance mais sans réactions, des écoulements avec réactions mais sans drainance et des écoulements sans réactions ni drainance. Les mécanismes de recharge et d'évolution chimique déterminés dans cette étude sont en accord avec ceux mis en évidence dans d'autres aquifères du centre sud et du sud-ouest des états-Unis. Resumen. El acuífero libre de High Plains (Ogallala) es el mayor de los Estados Unidos y supone la fuente principal de abastecimiento en la región semiárida del sur de High Plains (Texas) y de Nuevo México. Los análisis de agua y suelos realizados al nordeste de Amarillo (Texas), junto con los datos de otros estudios regionales, indican que los procesos que tienen lugar durante la recarga del acuífero controlan la composición de las aguas subterráneas en la mitad septentrional de los High Plains del Sur. Los datos isotópicos y hidroquímicos son coherentes con una secuencia de episodios de precipitación, concentración de solutos en la parte superior del suelo por evapotranspiración, escorrentía, e infiltración a través de 'playas' y zanjas (modificadas localmente por los flujos de retorno de aguas residuales y de excedentes de riego).

  10. Hydrogeologic uncertainties and policy implications: The Water Consumer Protection Act of Tucson, Arizona, USA

    NASA Astrophysics Data System (ADS)

    Wilson, L. G.; Matlock, W. G.; Jacobs, K. L.

    The 1995 Water Consumer Protection Act of Tucson, Arizona, USA (hereafter known as the Act) was passed following complaints from Tucson Water customers receiving treated Central Arizona Project (CAP) water. Consequences of the Act demonstrate the uncertainties and difficulties that arise when the public is asked to vote on a highly technical issue. The recharge requirements of the Act neglect hydrogeological uncertainties because of confusion between "infiltration" and "recharge." Thus, the Act implies that infiltration in stream channels along the Central Wellfield will promote recharge in the Central Wellfield. In fact, permeability differences between channel alluvium and underlying basin-fill deposits may lead to subjacent outflow. Additionally, even if recharge of Colorado River water occurs in the Central Wellfield, groundwater will become gradually salinized. The Act's restrictions on the use of CAP water affect the four regulatory mechanisms in Arizona's 1980 Groundwater Code as they relate to the Tucson Active Management Area: (a) supply augmentation; (b) requirements for groundwater withdrawals and permitting; (c) Management Plan requirements, particularly mandatory conservation and water-quality issues; and (d) the requirement that all new subdivisions use renewable water supplies in lieu of groundwater. Political fallout includes disruption of normal governmental activities because of the demands in implementing the Act. Résumé La loi de 1995 sur la protection des consommateurs d'eau de Tucson (Arizona, États-Unis) a été promulguée à la suite des réclamations des consommateurs d'eau de Tucson alimentés en eau traitée à partir à la station centrale d'Arizona (CAP). Les conséquences de cette loi montrent les incertitudes et les difficultés qui apparaissent lorsque le public est appeléà voter sur un problème très technique. Les exigences de la loi en matière de recharge négligent les incertitudes hydrogéologiques du fait de la