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Sample records for mati jaas enno

  1. JAAS - 20 Years of Manuscripts, Citations, and Scientific Impact

    SciTech Connect

    Koppenaal, David W.

    2006-03-01

    David W. Koppenaal is a Laboratory Fellow, and Associate Director of the Biological Sciences Division at Pacific Northwest National Laboratory. He has been a member of the JAAS Editorial Board since 2000. Dr. Koppenaal first published in JAAS in 1988, and was recently guest editor for a 2004 special issue on Collision & Reaction Cells in Atomic Mass Spectrometry. He is currently also arranging a special issue on Metallomics for early 2007 publication. Dr. Koppenaal’s research interests include atomic mass spectrometry instrumentation and applications, with special interests in interference reduction using collision/reaction cells, high-resolution MS techniques using ion traps, new generation MS detectors, and radionuclear and metallomic applications of ICPMS.

  2. [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.

  3. Isolation and characterization of endophytic Bacillus subtilis Jaas ed1 antagonist of eggplant Verticillium wilt.

    PubMed

    Lin, Ling; Qiao, Yong-Sheng; Ju, Zheng-Ying; Ma, Chang-Wen; Liu, Ying-Hao; Zhou, Yi-Jun; Dong, Han-Song

    2009-07-01

    An endophytic bacterial strain, Jaas ed1, was isolated from the interior of eggplant (Solanum melongena L.) stems in Jiangsu Province, China. According to the morphological and physiological characteristics and phylogenetic analysis of the 16s rDNA sequence, it was identified as Bacillius subtilis. Strain Jaas ed1 and its cell-free filtrate had strong antifungal activity against Verticillium dahliae. The strain was an internal colonizer within the eggplant without any harmful side effects to the plant. In greenhouse experiments, the strain cell suspension effectively controlled Verticillium wilt of eggplant, and its control efficiency was far more significant than that of the cell-free filtrate after inoculation of V. dahliae.

  4. Mass analyzed threshold ionization (MATI) with VUV radiation

    NASA Astrophysics Data System (ADS)

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

    2009-05-01

    Mass analyzed threshold ionization is a combination of threshold ionization spectroscopy with mass spectrometry. Similar to zero electron kinetic energy (ZEKE), MATI spectroscopy takes advantage of the field ionization of long lived high Rydberg states to obtain an ionization threshold and perform spectroscopy on the resulting cation. MATI at the synchrotron utilizing tunable VUV light opens up a novel way to perform spectroscopy on ions and improve the resolution in ionization energy determination in comparison with conventional photoionization efficiency curve measurements. This method is implemented at the Advanced Light Source and vibrationally-resolved MATI spectra for simple di- and polyatomic molecules (O2, N2, H2O, N2O, C2H2, and C6H6) are measured. This preliminary work allows us to test the applicability of MATI at a synchrotron and prepare for investigation of more complex systems such as mixtures of molecules, isomers and clusters.

  5. 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

  6. Mass analyzed threshold ionization (MATI) spectroscopy of p-cresol

    NASA Astrophysics Data System (ADS)

    Shirhatti, P. R.; Wategaonkar, S.

    2012-03-01

    Experimental setup was developed for carrying out the mass analyzed threshold ionization (MATI) spectroscopy. Primary objective has been to carry out the vibronic spectroscopy of the novel hydrogen bonded complexes in the cationic state. To this end MATI spectroscopy is best suited for the purpose. This work presents the successful implementation of the same using p-cresol as a test case. This happens to be the prime substrate in most of our studies on weakly hydrogen bonded complexes that are dominated by the dispersion interaction contrary to the electrostatic nature of the conventional hydrogen bonds. The adiabatic ionization potential of p-cresol was determined as 65,904 ± 10 cm-1 which is in good agreement with the previously reported value. The MATI spectrum also shows a few vibronic bands of p-cresol cation.

  7. Curare Alkaloids: Constituents of a Matis Dart Poison.

    PubMed

    Malca Garcia, Gonzalo R; Hennig, Lothar; Shelukhina, Irina V; Kudryavtsev, Denis S; Bussmann, Rainer W; Tsetlin, Victor I; Giannis, Athanassios

    2015-11-25

    A phytochemical study of dart and arrow poison from the Matis tribe led to the identification of D-(-)-quinic acid, L-malic acid, ethyldimethylamine, magnoflorine, and five new bisbenzyltetrahydroisoquinoline alkaloids (BBIQAs), 1-5. D-Tubocurarine could not be identified among these products. BBIQA (3) contains a unique linkage at C-8 and C-11'. All structures were characterized by a combination of NMR and HRESIMS data. The effects of Matis poison and individual BBIQAs (1-3) on rat muscle nAChR expressed in Xenopus oocytes have been investigated using the two-electrode voltage clamp technique.

  8. Tumor immunolocalization using 124 I-iodine-labeled JAA-F11 antibody to Thomsen-Friedenreich alpha-linked antigen.

    PubMed

    Chaturvedi, Richa; Heimburg, Jamie; Yan, Jun; Koury, Stephen; Sajjad, Munawwar; Abdel-Nabi, Hani H; Rittenhouse-Olson, Kate

    2008-03-01

    Clinical immunolocalization has been attempted by others with an anti-Thomsen-Friedenreich antigen (TF-Ag) mAb that bound both alpha- and beta-linked TF-Ag. In this report, 124 I-labeled mAb JAA-F11 specific for alpha-linked TF-Ag showed higher tumor specificity in in vivo micro-positron emission tomography (micro-PET) of the mouse mammary adenocarcinoma line, 4T1, showing no preferential uptake by the kidney. Labeled product remained localized in the tumor for at least 20 days. Glycan array analysis showed structural specificity of the antibody.

  9. Computational screening of the human TF-glycome provides a structural definition for the specificity of anti-tumor antibody JAA-F11.

    PubMed

    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.

  10. MATI, a Novel Protein Involved in the Regulation of Herbivore-Associated Signaling Pathways.

    PubMed

    Santamaría, M Estrella; Martinez, Manuel; Arnaiz, Ana; Ortego, Félix; Grbic, Vojislava; Diaz, Isabel

    2017-01-01

    The defense response of the plants against herbivores relies on a complex network of interconnected signaling pathways. In this work, we characterized a new key player in the response of Arabidopsis against the two-spotted spider mite Tetranychus urticae, the MATI (Mite Attack Triggered Immunity) gene. This gene was differentially induced in resistant Bla-2 strain relative to susceptible Kon Arabidopsis accessions after mite attack, suggesting a potential role in the control of spider mites. To study the MATI gene function, it has been performed a deep molecular characterization of the gene combined with feeding bioassays using modified Arabidopsis lines and phytophagous arthropods. The MATI gene belongs to a new gene family that had not been previously characterized. Biotic assays showed that it confers a high tolerance not only to T. urticae, but also to the chewing lepidopteran Spodoptera exigua. Biochemical analyses suggest that MATI encodes a protein involved in the accumulation of reducing agents upon herbivore attack to control plant redox homeostasis avoiding oxidative damage and cell death. Besides, molecular analyses demonstrated that MATI is involved in the modulation of different hormonal signaling pathways, affecting the expression of genes involved in biosynthesis and signaling of the jasmonic acid and salicylic acid hormones. The fact that MATI is also involved in defense through the modulation of the levels of photosynthetic pigments highlights the potential of MATI proteins to be exploited as biotechnological tools for pest control.

  11. Mass-analyzed threshold ionization (MATI) spectroscopy of atoms and molecules using VUV synchrotron radiation.

    PubMed

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

    2009-12-31

    Mass-analyzed threshold ionization (MATI) spectroscopy using synchrotron radiation (Advanced Light Source, Lawrence Berkeley National Laboratory) has been performed for Ar, N(2), O(2), N(2)O, H(2)O, C(2)H(2), and C(6)H(6). 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 state resolved MATI spectra of N(2) and O(2) are reported, and spectral characteristics are discussed in comparison with previously reported threshold photoelectron spectroscopic studies. Although MATI performed with synchrotron radiation is intrinsically less sensitive compared to laser-based sources, this work demonstrates that MATI spectroscopy performed with widely tunable vacuum ultraviolet (VUV) radiation is a complementary technique for studying the ionization spectroscopy of polyatomic molecules.

  12. 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.

  13. MATI, a Novel Protein Involved in the Regulation of Herbivore-Associated Signaling Pathways

    PubMed Central

    Santamaría, M. Estrella; Martinez, Manuel; Arnaiz, Ana; Ortego, Félix; Grbic, Vojislava; Diaz, Isabel

    2017-01-01

    The defense response of the plants against herbivores relies on a complex network of interconnected signaling pathways. In this work, we characterized a new key player in the response of Arabidopsis against the two-spotted spider mite Tetranychus urticae, the MATI (Mite Attack Triggered Immunity) gene. This gene was differentially induced in resistant Bla-2 strain relative to susceptible Kon Arabidopsis accessions after mite attack, suggesting a potential role in the control of spider mites. To study the MATI gene function, it has been performed a deep molecular characterization of the gene combined with feeding bioassays using modified Arabidopsis lines and phytophagous arthropods. The MATI gene belongs to a new gene family that had not been previously characterized. Biotic assays showed that it confers a high tolerance not only to T. urticae, but also to the chewing lepidopteran Spodoptera exigua. Biochemical analyses suggest that MATI encodes a protein involved in the accumulation of reducing agents upon herbivore attack to control plant redox homeostasis avoiding oxidative damage and cell death. Besides, molecular analyses demonstrated that MATI is involved in the modulation of different hormonal signaling pathways, affecting the expression of genes involved in biosynthesis and signaling of the jasmonic acid and salicylic acid hormones. The fact that MATI is also involved in defense through the modulation of the levels of photosynthetic pigments highlights the potential of MATI proteins to be exploited as biotechnological tools for pest control. PMID:28649257

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

    NASA Astrophysics Data System (ADS)

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

    2009-05-01

    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 state resolved MATI spectra of N2 and O2 are reported, and spectral characteristics are discussed in comparison with previously reported threshold photoelectron spectroscopic studies. Although MATI performed with synchrotron radiation is intrinsically less sensitive compared to laser-based sources, this work demonstrates that MATI spectroscopy performed with widely tunable vacuum ultraviolet (VUV) radiation is a complementary technique for studying the ionization spectroscopy of polyatomic molecules.

  15. MATI Spectroscopical Detection Of Geometry Changes Of Aromatic Molecules In The Ionic State

    NASA Astrophysics Data System (ADS)

    Gunzer, Frank

    2009-09-01

    Since its introduction the MATI (mass analyzed threshold ionization) spectroscopy has been an important technique for the investigation of molecular ions with lasers. The energies of molecular states and in particular the ionization energy can be determined with very high accuracy. A major problem of MATI spectroscopy is the reduced signal strength compared for example with ZEKE (zero kinetic energy) spectroscopy which analyzes electrons instead of ions. MATI spectroscopy was applied in the investigation of pyridine and the three isomers of environmentally toxic di-chloro-benzene. Thus new resonances of these cations could be found and geometry changes could be identified by observation of the violation of the "Δν = 0-propensity rule."

  16. REMPI and MATI spectroscopy of cis and trans 4-chloro-3-fluoroanisole

    NASA Astrophysics Data System (ADS)

    Liu, Sheng; Dai, Wenshuai; Lin, Dan; Cheng, Min; Du, YiKui; Zhu, Qihe

    2017-08-01

    The Resonance-enhanced two-photon ionization (R2PI) and Mass-analyzed threshold ionization (MATI) spectra of 4-chloro-3-fluoroanisole (4Cl3FA) were recorded in detail. The experimental and calculated results revealed that cis and trans 4Cl3FA are the only two stable conformers in each of the S0, S1 and D0 states. The first electronic excitation energies (E1's) of cis and trans35Cl-4Cl3FA were measured to be 35,326 ± 3 and 35,443 ± 3 cm-1 by the R2PI spectroscopy and the corresponding adiabatic ionization energies (IEs) were determined to be 67,330 ± 5 and 67,591 ± 5 cm-1 by the MATI spectroscopy. The E1's and IEs of cis and trans37Cl-4Cl3FA were also obtained and found to be identical to that of the 35Cl-4Cl3FA conformers. Compared with the trans 4Cl3FA, the cis 4Cl3FA is more stable in the S0, S1 and D0 states. The vibrational bands observed in the R2PI and MATI spectra are related to the vibrations involving the in-plane deformation of the benzene ring, the CH3 torsion and the OCH3 inversion. The substituent effects on the molecular structures, transition energies and vibrations of 4Cl3FA are discussed.

  17. REMPI and MATI spectroscopy of cis and trans 3-chloro-N-methylaniline

    NASA Astrophysics Data System (ADS)

    Liu, Sheng; Zhang, Lijuan; Dai, Wenshuai; Cheng, Min; Du, Yikui; Zhu, Qihe

    2017-06-01

    The Resonance-enhanced two-photon ionization (R2PI) and Mass-analyzed threshold ionization (MATI) spectra of 3-Chloro-N-methylaniline (3ClNMA) were recorded in detail. The experimental and calculated results revealed that cis and trans 3ClNMA are the only two stable conformers for each of the S0, S1 and D0 states. The first electronic excitation energies (E1s) of cis and trans35Cl-3ClNMA were measured to be 33,003 ± 3 and 32,886 ± 3 cm-1 by R2PI spectroscopy. The adiabatic ionization energies (IEs) of cis and trans35Cl-3ClNMA were determined to be 61,531 ± 5 and 61,625 ± 5 cm-1 by MATI spectroscopy. The E1s and IEs of cis and trans37Cl-3ClNMA were also obtained and found to be identical to that of the 35Cl-3ClNMA rotamers. Compared with the trans rotamer, the cis rotamer is less stable by 50 cm-1 in the S1 state, but more stable by 67 and 161 cm-1 in S0 and D0 states. Most of the active vibration modes observed in the R2PI and MATI spectra are in-plane ring deformation and substituent-sensitive modes. Detailed analysis reveals a correlation between the typical ring vibration frequencies and the relative stability of the two rotamers, suggesting that the conformation effect on the ring rigidity plays a key role in determining the relative stability of the conformers. The ab initio and density functional theory (DFT) calculations were performed to analyze the substitution and conformation effects on the properties of 3ClNMA rotamers.

  18. Old World cutaneous leishmaniasis challenges in Morocco, Algeria, Tunisia and Iran (MATI): a collaborative attempt to combat the disease.

    PubMed

    Bahrami, Fariborz; Späth, Gerald F; Rafati, Sima

    2017-04-10

    Cutaneous leishmaniasis (CL) is a main public health problem in Morocco, Algeria, Tunisia and Iran, known as the MATI region. During the biennial meeting of Pasteur Institutes of the MATI region in November 2016 in Tehran, a Leishmania panel formed of scientists with different expertise in CL research from the MATI and Institut Pasteur in Paris, proposed a new consortium to develop an integrative research approach to better understand this disease. The proposed consortium synergizes three complementary thematics on Leishmania genetics, host immune response, and vector transmission. Moreover, assessing the social impact of CL with the aim to raise awareness at both the national and international levels will be a major focus of this consortium.

  19. REMPI and MATI spectroscopic study of selected cis and trans 3-chlorostyrene rotamers

    NASA Astrophysics Data System (ADS)

    Dong, Changwu; Zhang, Lijuan; Liu, Sheng; Hu, Lili; Cheng, Min; Du, Yikui; Zhu, Qihe; Zhang, Cunhao

    2013-10-01

    The ab initio and DFT calculations predict two stable rotamers, cis and trans, for 3-chlorostyrene in each of the S0, S1 and D0 states. In the two-color resonant two-photon ionization (2C-R2PI) spectra, the band origins of S1 ← S0 electronic transition of cis and trans 3-chlorostyrene appears respectively at 33 766 ± 3 and 34 061 ± 3 cm-1. The mass-analyzed threshold ionization (MATI) spectra give the adiabatic ionization energies of 69 701 ± 4 cm-1 and 69 571 ± 4 cm-1 for cis and trans rotamers. Within the experimental detection limit, the measured transition energies are the same for both the 35Cl and 37Cl isotopomers. The observed active modes of rotamers in the S1 and D0 states involve mainly the in-plane ring deformation and substituent-sensitive bending vibration. It is derived from the 2C-R2PI and MATI spectroscopic data that the cis rotamer is more stable than the trans rotamer by 218 ± 30, 513 ± 30 and 88 ± 30 cm-1 for the S0, S1 and D0 states, respectively.

  20. An improved experimental scheme for simultaneous measurement of high-resolution zero electron kinetic energy (ZEKE) photoelectron and threshold photoion (MATI) spectra

    NASA Astrophysics Data System (ADS)

    Michels, François; Mazzoni, Federico; Becucci, Maurizio; Müller-Dethlefs, Klaus

    2017-10-01

    An improved detection scheme is presented for threshold ionization spectroscopy with simultaneous recording of the Zero Electron Kinetic Energy (ZEKE) and Mass Analysed Threshold Ionisation (MATI) signals. The objective is to obtain accurate dissociation energies for larger molecular clusters by simultaneously detecting the fragment and parent ion MATI signals with identical transmission. The scheme preserves an optimal ZEKE spectral resolution together with excellent separation of the spontaneous ion and MATI signals in the time-of-flight mass spectrum. The resulting improvement in sensitivity will allow for the determination of dissociation energies in clusters with substantial mass difference between parent and daughter ions.

  1. 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.

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

    NASA Astrophysics Data System (ADS)

    Lee, Yu Ran; Kang, Do Won; Kim, Hong Lae; Kwon, Chan Ho

    2014-11-01

    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-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 (2A2), 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 C2v symmetry through the C-N axis.

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

    ScienceCinema

    None

    2016-07-12

    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.

  4. One-photon mass-analyzed threshold ionization spectroscopy (MATI) of cis-dichloroethylene (cis-C2H2Cl2)

    NASA Astrophysics Data System (ADS)

    Bae, Yong Jin; Kim, Myung Soo

    2007-11-01

    A high-quality one-photon mass-analyzed threshold ionization (MATI) spectrum of cis-C2H2Cl2 was obtained by using vacuum ultraviolet radiation generated by four-wave mixing in Kr. The ionization energy determined from the position of the 0-0 band in the spectrum was 9.6578 ± 0.0006 eV. Ten vibrational fundamentals for the cation were identified. Most of the overtones and combinations could be assigned properly by comparing with the quantum chemical calculation results. The equilibrium geometry of the cation was determined through Franck-Condon fit.

  5. Structure and vibrations of 2-fluoro-N-methylaniline in the S0, S1 and D0 states: REMPI and MATI spectroscopy and theoretical calculations

    NASA Astrophysics Data System (ADS)

    Liu, Sheng; Dai, Wenshuai; Zhang, Lijuan; Cheng, Min; Du, Yikui; Zhu, Qihe

    2017-10-01

    Theoretical calculations predicted that there are only two stable conformers, trans and cis, for 2-fluoro-N-methylaniline (2FNMA) in the S0, S1 and D0 states. Compared to the cis conformer, the trans one is more stable, and has a population more than 99% at room temperature. The optimized molecular skeleton of trans and cis 2FNMA are both non-planar in the S0 state, but planar in the S1 and D0 states. The one-dimensional potential energy surface of 2FNMA in the S0 state is obtained. The Resonance-enhanced two-photon ionization (R2PI) and Mass-analyzed threshold ionization (MATI) spectra of trans 2FNMA are obtained. The first electronic excitation energy (E1) and the adiabatic ionization energy (IE) of trans 2FNMA are determined. The substitution effect on the molecular structures, transition energies and vibrations of 2FNMA are discussed.

  6. 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.

  7. Determination of tributyltin in marine sediment: Comité Consultatif pour la Quantité de Matière (CCQM) pilot study P-18 international intercomparison.

    PubMed

    Sturgeon, R E; Wahlen, R; Brandsch, T; Fairman, B; Wolf-Briche, C; Alonso, J I Garcia; González, P Rodriguez; Encinar, J Ruiz; Sanz-Medel, A; Inagaki, K; Takatsu, A; Lalere, B; Monperrus, M; Zuloaga, O; Krupp, E; Amouroux, D; Donard, O F X; Schimmel, H; Sejerøe-Olsen, B; Konieczka, P; Schultze, P; Taylor, P; Hearn, R; Mackay, L; Myors, R; Win, T; Liebich, A; Philipp, R; Yang, L; Willie, S

    2003-07-01

    The capabilities of National Metrology Institutes (NMIs-those which are members of the Comité Consultatif pour la Quantité de Matière (CCQM)of the CIPM) and selected outside "expert" laboratories to quantitate (C(4)H(9))(3)Sn(+) (TBT) in a prepared marine sediment were assessed. This exercise was sanctioned by the 7th CCQM meeting, April 4-6, 2001, as an activity of the Inorganic Analysis Working Group and was jointly piloted by the Institute for National Measurement Standards of the National Research Council of Canada (NRC) and the Laboratory of the Government Chemist (LGC), UK. A total of 11 laboratories submitted results (7 NMIs, and 4 external labs). Two external laboratories utilized a standard calibration approach based on a natural abundance TBT standard, whereas all NMIs relied upon isotope dilution mass spectrometry for quantitation. For this purpose, a species specific (117)Sn-enriched TBT standard was supplied by the LGC. No sample preparation methodology was prescribed by the piloting laboratories and, by consequence, a variety of approaches was adopted by the participants, including mechanical shaking, sonication, accelerated solvent extraction, microwave assisted extraction and heating in combination with Grignard derivatization, ethylation and direct sampling. Detection techniques included ICP-MS (with GC and HPLC sample introduction), GC-MS, GC-AED and GC-FPD. Recovery of TBT from a control standard (NRCC CRM PACS-2 marine sediment) averaged 93.5+/-2.4% ( n=14). Results for the pilot material averaged 0.680+/-0.015 micro mol kg(-1) ( n=14; 80.7+/-1.8 micro g kg(-1)) with a median value of 0.676 micro mol kg(-1). Overall, performance was substantially better than state-of-the-art expectations and the satisfactory agreement amongst participants permitted scheduling of a follow-up Key comparison for TBT (K-28), a Pilot intercomparison for DBT (P-43), and certification of the test sediment for TBT content and its release as a new Certified Reference

  8. 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).

  9. [L'effet et l'influence de l'espoir et de la surmédiatisation sur la prise de décision en matière de technologies de la santé].

    PubMed

    Simpson, Christy

    2015-09-01

    La prise de décision en matière de technologies de la santé est complexe. L'effet potentiel de l'espoir et de la surmédiatisation est peu exploré. Le présent article traite de la commercialisation de l'espoir et de l'influence de sa surmédiatisation sur la prise de décision. Puisque les leaders en santé jouent un rôle essentiel dans la prise de ce type de décisions, l'auteure traite également des possibilités et des suggestions liées à la structure des processus de décision afin de jeter un regard critique sur la « surmédiatisation de l'espoir ».

  10. Vibrational assignment and Franck-Condon analysis of the mass-analyzed threshold ionization (MATI) spectrum of CH2ClI: The effect of strong spin-orbit interaction

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Hyoseok; Lee, Yoon Sup; Kim, Myung Soo

    2005-06-01

    Detailed analysis of the one-photon mass-analyzed threshold ionization (MATI) spectrum of CH2ClI is presented. This includes the determination of the ionization energy of CH2ClI, complete vibrational assignments, and quantum-chemical calculations at the spin-orbit density-functional-theory (SODFT) level with various basis sets. Relativistic effective core potentials with effective spin-orbit operators can be used in SODFT calculations to treat the spin-orbit term on an equal footing with other relativistic effects and electron correlations. The comparison of calculated and experimental vibrational frequencies indicate that the spin-orbit effects are essential for the reasonable description of the CH2ClI+ cation. Geometrical parameters and thus the molecular shape of the cation are greatly influenced by the spin-orbit effects even for the ground state. Calculated geometrical parameters deviate substantially for different basis sets or effective core potentials. In an effort to derive the exact geometrical parameters for this cation, SODFT geometries were further improved utilizing Franck-Condon fit of the MATI spectral pattern. This empirical fitting produced the well-converged set of geometrical parameters that are quite insensitive to the choice of SODFT calculations. The C-I bond length and the Cl-C-I bond angle show large deviations among different SODFT calculations, but the empirical spectral fitting yields 2.191±0.003Å for the C-I bond length and 107.09±0.09° for the Cl-C-I angle. Those fitted geometrical parameters along with the experimental vibrational frequencies could serve as a useful reference in calibrating relativistic quantum-chemical methods for radicals.

  11. 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

  12. 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

  13. Explorer : des clés pour mieux comprendre la matière

    ScienceCinema

    None

    2016-07-12

    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.

  14. Development and Implementation of a Medication Adherence Training Instrument for Persons Living With HIV: The MATI

    ERIC Educational Resources Information Center

    McPherson-Baker, Shvawn; Jones, Deborah; Duran, Ron E.; Klimas, Nancy; Schneiderman, Neil

    2005-01-01

    Recent advances in the medical management of HIV offer the potential for increased longevity, improved quality of life, and the treatment of HIV as a chronic, rather than terminal, illness. The advent of highly active antiretroviral therapy (HAART) has required the necessity of strict adherence to complex medication regimens. As a vital factor in…

  15. Maintainer’s Associate Training Instructional Environment: Its Demonstration (MATIE 2)

    DTIC Science & Technology

    1989-06-01

    problems as an expert would, it Is also able to solve the problem In multiple ways to give It the flexibilty to handle multiple approaches to the...the remaining test candidates), the Maintainer’s Associate simply followed a branch of the test tree to the next " child " node. Both of these

  16. Development and Implementation of a Medication Adherence Training Instrument for Persons Living With HIV: The MATI

    ERIC Educational Resources Information Center

    McPherson-Baker, Shvawn; Jones, Deborah; Duran, Ron E.; Klimas, Nancy; Schneiderman, Neil

    2005-01-01

    Recent advances in the medical management of HIV offer the potential for increased longevity, improved quality of life, and the treatment of HIV as a chronic, rather than terminal, illness. The advent of highly active antiretroviral therapy (HAART) has required the necessity of strict adherence to complex medication regimens. As a vital factor in…

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

    PubMed

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

    2016-02-12

    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.

  18. 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

  19. 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.

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

    PubMed

    Oka, Y; Shoji, T

    2014-02-01

    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(2). The RF net power efficiency of the extracted ion current density under standard condition is 11.6 mA/cm(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.

  1. 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.

  2. VizieR Online Data Catalog: Optical spectroscopy of high proper motion stars (Reyle+, 2006)

    NASA Astrophysics Data System (ADS)

    Reyle, C.; Scholz, R. D.; Schultheis, M.; Robin, A. C.; Irwin, M.

    2006-11-01

    Spectroscopic parameters (spectral indices, spectral type, spectroscopic distances) for 56 nearby M dwarfs and one K subdwarf are presented. Proper motion, optical and near infrared photometry, and photometric distance can be found in Reyle & Robin, 2004, Cat. J/A+A/421/643 and Reyle et al., 2002, Cat. J/A+A/390/491. (3 data files).

  3. 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.

  4. 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.

  5. Renner-Teller Coupling in H2S+: a Comparison of Theory with Optical Spectra and Recent Pfi and Mati Experimental Results

    NASA Astrophysics Data System (ADS)

    Duxbury, G.; Jungen, Ch.; Alijah, A.

    2012-06-01

    Most of the early studies of H2S+ focussed on the comparison between the medium resolution photoelectron spectra of hydrogen sulphide with the emission spectrum of the A-X emission spectrum of the ion. Recently, with the advent of improved photoelectron and pulsed field ionisation spectrometers, and also a mass-analysed threshold ionisation approach, there has been a renewal of interest in the spectroscopy and dynamics of the formation and the fragmentation of the hydrogen sulphide ion. In this contribution we compare the results derived from these new experiments with the analysis of the original emission spectra. The results are also compared with the predictions made using the stretch-bender approach to the calculation of the effects on the Renner-Teller coupling of large amplitude vibrational motion. G. Duxbury, Ch. Jungen, and J. Rostas, Molec. Phys. 48, 719 (1983) M. Hochlaf, K-M. Weitzel, and C. Y. Ng, J. Chem. Phys. 120, 6994 (2004). S. Han, T. Y. Kang, and S. K. Kim, J. Chem. Phys. 132, 124304 (2010)

  6. 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.

  7. 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.

  8. VizieR Online Data Catalog: Abundances of microlensed Bulge dwarf stars. V. (Bensby+, 2013)

    NASA Astrophysics Data System (ADS)

    Bensby, T.; Yee, J. C.; Feltzing, S.; Johnson, J. A.; Gould, A.; Cohen, J. G.; Asplund, M.; Melendez, J.; Lucatello, S.; Han, C.; Thompson, I.; Gal-Yam, A.; Udalski, A.; Benett, D. P.; Bond, I. A.; Kohei, W.; Sumi, T.; Suzuki, D.; Suzuki, K.; Takino, S.; Tristram, P.; Yamai, N.; Yonehara, A.

    2012-11-01

    For each spectral line we give the lower excitation potential, measured equivalent widths, and derived absolute abundances. We also give median abundances for each star, normalised to the Sun, and errors in the median abundances. These tables contain data for all so far 58 microlensed dwarf stars, and superseeds the tables in Bensby+ (2009, Cat. J/A+A/499/737), Bensby+ (2010, Cat. J/A+A/512/A41), and Bensby+ (2011, Cat. J/A+A/533/A134). (4 data files).

  9. VizieR Online Data Catalog: Open clusters within 1.8 kpc of the Sun (Joshi+, 2016)

    NASA Astrophysics Data System (ADS)

    Joshi, Y. C.; Dambis, A. K.; Pandey, A. K.; Joshi, S.

    2016-07-01

    The basic cluster data were taken from the Kharchenko et al. (2013, Cat. J/A+A/558/A53), Schmeja et al. (2014, Cat. J/A+A/568/A51) and Scholz et al. (2015, Cat. J/A+A/581/A39) which uses all-sky catalogue 2MASS (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 masses from Piskunov (2007, Cat. J/A+A/468/151/table2). We also added X, Y and Z positions, and galactocentric distance of the clusters determined in the present study. (1 data file).

  10. Marine Corps Transition Team Program in Iraq: Mission Accomplished

    DTIC Science & Technology

    2011-03-02

    to Mission Accomplishment.. .................................................................... 21 Figures Figure 1. MATIS Score Improvement...CORPS ADVISOR TRAINING IMPACT SYSTEM ( MATIS ) The Interaction Research Institute (IRI), a private company, conducted a study that measured advisor...study specifically focused on I Marine Expeditionary Force sourced transition teams who deployed to OIF from October 2007- September 2009. The : MATIS

  11. 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

  12. 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).

  13. 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,

  14. 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).

  15. VizieR Online Data Catalog: Hyades single stars fiducial photometry (Kopytova+, 2016)

    NASA Astrophysics Data System (ADS)

    Kopytova, T. G.; Brandner, W.; Tognelli, E.; Prada Moroni, P. G.; Da Rio, N.; Roeser, S.; Schilbach, E.

    2015-10-01

    Absolute photometry (ROSAT X-ray, GALEX UV, APASS gri, 2MASS JHKs, and WISE W1 to W4) and physical parameters of the Hyades single-star sequence members. The "Resolution" column correspond to values outside which no companion was detected. Objects observed only by the spectroscopic survey of Mermilliod et al. (2009A&A...498..949M, Cat. J/A+A/498/949) have no resolution value. Hyades IDs are from Roeser et al. (2011A&A...531A..92R, Cat. J/A+A/531/A92). (1 data file).

  16. VizieR Online Data Catalog: [Fe/H] and kinematics of 26 Galactic bulge fields (Zoccali+, 2017)

    NASA Astrophysics Data System (ADS)

    Zoccali, M.; Vasquez, S.; Gonzalez, O. A.; Valenti, E.; Rojas-Arriagada, A.; Minniti, J.; Rejkuba, M.; Minniti, D.; McWilliam, A.; Babusiaux, C.; Hill, V.; Renzini, A.

    2017-02-01

    In this table we provide coordinates, VVV magnitudes, radial velocities and metallicities for ~5000 K giant stars observed at spectral resolution R~6500, in the Calcium II Triplet region. Their metallicities were derived using a CaT calibration developed for this survey (Vasquez et al., 2015, Cat. J/A+A/555/A91). In addition, a set of ~600 K giant stars, corresponding to the high resolution portion (R=22500) of the survey, and published in the paper II of this series (Gonzalez et al., 2015, Cat. J/A+A/584/A46), is included for completitude. (1 data file).

  17. Spatial and magnetic ordering of systems chemisorbed at the surface of ferromagnets

    NASA Astrophysics Data System (ADS)

    Aguilera-Granja, F.; Morán-López, J. L.; Falicov, L. M.

    1984-09-01

    The spatial and magnetic ordering of systems chemisorbed at the surface of ferromagnets are studied within mean-field theory. With antiferromagnetic interactions between adatoms (Jaa) and between adatoms and substrate atoms (Jas), and ferromagnetic interactions between substrate atoms (Jss), the spatial and magnetic order parameters are calculated at submonolayer coverages of atoms chemisorbed at the (100) surface of a simple-cubic crystal. Depending on the coverage and the ratio R=JasJaa, a variety of antiferromagnetic and ferrimagnetic solutions are obtained. Results for the temperature-coverage phase diagram and the temperature dependence of the order parameter are presented.

  18. VizieR Online Data Catalog: The Seven Sisters DANCe. II. Pleiades (Barrado+, 2016)

    NASA Astrophysics Data System (ADS)

    Barrado, D.; Bouy, H.; Bouvier, J.; Moraux, E.; Sarro, L. M.; Bertin, E.; Cuillandre, J. C.; Stauffer, J. R.; Lillo-Box, J.; Pollock, A.

    2016-08-01

    Lithium equivalent widths (Table 1), Proper motions (Table 2), and general properties (Table 3) for bona fide members of the Pleiades clusters, based on the literature and the DANCe membership analysis (Bouy et al. 2013A&A...554A.101B, 2015, Cat. J/A+A/577/A148). (3 data files).

  19. [An overview on reality of Dong-In Uywon(Hospital) and effects on culture of medicine].

    PubMed

    Kim, D H; Kim, J S

    1999-01-01

    From a review on the reality of Dong-In Hospital which was a hospital founded by Dong-Aa Dong-In-Hywe Foundation which was a corporation of governmental patron around Ulsa(1905) protective treaty between Japan and Korea, and this hospital seemed to be dissoluted just before the annexation signing of Korea to Japan. The building with site of Dong-In Hospital in Taegu was sold to Kyung-Sang Pook-Do province and Jaa-Hye Hospital was constructed instead as a virtual conscience. So it is impossible to say this Jaa-Hye Hospital as the predecessor of Dong-In Hospital although Jaa-Hye Hospital which was belonging to Kyung-Sang Pook-Do province as Kyung-Sang Pook-Do Hospital had changed the name several times until being Taegu Medical School Hospital by using as Taegu Medical Institute College Hospital which was absorbed to U.S. military government after the restoration of independence from Japan. Since 1953 Kyungpook National University absorbed Taegu Medical School, it is possible to use Taegu Medical School Hospital as the predecessor of Kyungpook National University Hospital whereas it is impossible to use Jaa-Hye Hospital as the predecessor with nationality on the basis of the health and medical administrative system.

  20. VizieR Online Data Catalog: Very low mass objects in ONC (Rodriguez-Ledesma+, 2010)

    NASA Astrophysics Data System (ADS)

    Rodriguez-Ledesma, M. V.; Mundt, R.; Eisloeffel, J.

    2010-01-01

    Table 1 lists the 638 very low mass objects in the Orion Nebula Cluster with magnitudes between 14-21mag in I band for which NIR (JHK) photometry is available. The I band data is from Rodriguez-Ledesma et al. (2009, Cat. <J/A+A/502/883>) and JHK data from 2MASS, UKIDSS, and VLT. (1 data file).

  1. VizieR Online Data Catalog: Planet occurrence and stellar metallicity for KOIs (Mulders+, 2016)

    NASA Astrophysics Data System (ADS)

    Mulders, G. D.; Pascucci, I.; Apai, D.; Frasca, A.; Molenda-Zakowicz, J.

    2017-02-01

    The sample contains 665 planet candidates from the Q1-Q16 catalog (Mullally et al. 2015, Cat. J/ApJS/217/31) after removing false positives identified by Santerne et al. 2016 (Cat. J/A+A/587/A64). The planet occurrence rates and host star metallicities are listed in Table1. (1 data file).

  2. VizieR Online Data Catalog: Kinematical profiles of nearby galaxies (Vudragovic+, 2016)

    NASA Astrophysics Data System (ADS)

    Vudragovic, A.; Samurovic, S.; Jovanovic, M.

    2016-07-01

    We have started from the sample of Huertas-Company M. et al. (2011A&A...525A.157H, Cat. J/A+A/525/A157), that was cross-matched with GALEX and 2MASS catalogs. We have gathered 2180 galaxies in total with spectroscopy, and UV to near-IR photometry. (1 data file).

  3. VizieR Online Data Catalog: New Variables in 3 Galactic open clusters (Palma+, 2016)

    NASA Astrophysics Data System (ADS)

    Palma, T.; Minniti, D.; Dekany, I.; Claria, J. J.; Alonso-Garcia, J.; Gramajo, L. V.; Ramirez Alegria, S.; Bonatto, C.

    2016-11-01

    The observations were made as part of the VVV Survey. For each cluster field, we extracted and analyzed VVV data for objects that best matched the positions of previously reported variable stars (Zejda et al., 2012, Cat. J/A+A/548/A97), and also performed a blind variability search. (3 data files).

  4. Vacuum ultraviolet mass-analyzed threshold ionization spectroscopy of vinyl bromide: Franck-Condon analysis and vibrational assignment

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Myung Soo

    2003-09-01

    Vibrational spectrum of vinyl bromide cation in the ground electronic state was obtained by one-photon mass-analyzed threshold ionization (MATI) spectroscopy using coherent vacuum ultraviolet radiation generated by four-wave difference frequency mixing in Kr. From MATI spectrum, ionization energy to the ground state of the cation was determined to be 9.8171±0.0006 eV (79 180±5 cm-1). Almost complete vibrational assignments for the peaks in the MATI spectrum were possible by utilizing vibrational frequencies and Franck-Condon factors calculated at the Becke three parameter Lee-Yang-Parr (B3LYP)/6-311++G(df,pd) level. Franck-Condon analysis for one-photon MATI spectra is especially useful because calculations of only the ground electronic states are involved while that for two-photon MATI spectra requires excited state calculations.

  5. Etude expérimentale de la fixation de métaux par un matériau sédimentaire actuel d'origine algaire - I. Isolement, purification et caractérisation de la matière organique

    NASA Astrophysics Data System (ADS)

    Disnar, J.-R.; Trichet, J.

    1981-03-01

    In order to study the 'in vitro' fixation of metal ion species on algal and bacterial sedimentary organic matter, two algal mat samples have been studied. The main interest of this organic matter is its specific cyanobacterial origin. After isolation and purification, the organic matter was characterized by elemental and functional analysis, infrared spectroscopy. carbohydrates and amino-acid titration. These analyses indicate the richness of this type of organic matter in amino acids and carbohydrates, its poverty in aromatic structures, and to ascertain the types of bacteriological and chemical transformations undergone by the original biological compounds in the first steps of the diagenesis.

  6. Apports du cryo-microscope électronique à balayage à émission de champ à l'étude des matières organiques et des relations organo-minérales naturelles. Application aux croûtes microbiotiques des sols

    NASA Astrophysics Data System (ADS)

    Défarge, Christian; Issa, Oumarou Malam; Trichet, Jean

    1999-05-01

    The cryo-SEM (SEM equipped with a freeze-drying sample preparation system) allows the micromorphological transformations occurring during desiccation-rewetting cycles of microbiotic crusts from Sahelian soils to be visualised, like the swelling up of mucilaginous envelopes of the constituent micro-organisms through water absorption. When the cryo-SEM is equipped with a field emission gun, which permits observations at low voltage operation (1 kV) without coating, the natural surface of the samples may be revealed, in particular the presence, at the surface of mineral grains, of microbe-derived organic meshes that probably play a role in the resistance of these crusts to erosion.

  7. Minéralogie et bilan de matière de l'altération supergène d'un basalte alcalin du Moyen Atlas MarocainMineralogy and geochemistry of supergene alteration of an alkali basalt from the Middle Atlas, Morocco

    NASA Astrophysics Data System (ADS)

    Dekayir, A.; El-Maâtaoui, M.

    2001-05-01

    In the Middle Atlas of Morocco, alkali basaltic flows record successive weathering phases during the Quaternary. In fresh basalt interior and intermediate external zones, the first weathering stage is characterised by glass dissolution and the formation of a Si-Al poorly-crystallised product. Advanced weathering phases are characterised by 10 Å halloysite, kaolinite and goethite, located within the primary minerals or as secondary products in fissures. Olivine and iddingsite are transformed into Si-rich goethite, plagioclase into halloysite and pyroxene into a mixture of halloysite + geothite. Dissolution of Ti-magnetite and ilmenite yielded Ti-rich products. In these conditions, the weathering of basalts and development of a soil matrix are accompanied by the elimination of certain chemical elements, such as Si, Ca, Na and K, and the concentration of Fe and Al. In the soil, clay minerals such as illite and vermiculite, do not have any genetic relationship with weathered basalt and were probably introduced externally.

  8. Application de l'étude de la matière organique à l'analyse de l'érosion: exemple du bassin versant du Moulin, dans les terres noires des Alpes-de-Haute-Provence (France)Determination of eroded geological formations using organic matter characterization (Moulin basin, Alpes-de-Haute-Provence, France).

    NASA Astrophysics Data System (ADS)

    Di-Giovanni, Christian; Disnar, Jean-Robert; Bakyono, Jean-Paul; Kéravis, Didier; Millet, François; Olivier, Jean-Emmanuel

    2000-07-01

    The present study is based on the optical (palynofacies) and geochemical (pyrolyse Rock-Eval) characterization of the organic matter occurring both in bedrock, soils, river sediments (suspended matter and bedload) in a Draix Erosional Research Basin (Cemagref). Results confirm firstly the contribution of reworked organic matter in modern fluxes. Numerous previous studies have shown that organic matter analysis can be an accurate tool to provide information concerning past climates and past environments. Present results suggests that such analysis can also give information concerning the characterization of eroded bedrocks and of erosional processes such as river bank erosion and runoff.

  9. Redefining the "Normal" Worker: Law and Policy Choices for Work-Family Balance in CanadaRedéfinir le 'travailleur normal': Regard sur les choix législatifs et de politiques publiques en matière de conciliation travail-famille au Canada.

    PubMed

    Bernstein, Stéphanie; Valentini, Mathilde

    2017-01-01

    While the need to reconcile work and family life has been recognized in discrete ways in legislation and policy over the years, there has not been a substantial shift away from the archetype of the "unencumbered" (male) worker to a new model of the "normal" worker. In Canada and elsewhere, legislative protection does not allow women or men to effectively reconcile work and family responsibilities over the life cycle. This paper examines the different ways in which work-family balance is regulated, with a focus on the Canadian federal jurisdiction and the province of Quebec, and underlines the need for coherent labor and social policy. The paper also explores the development of multi-stakeholder initiatives on work-family balance, including the development of voluntary standards and a proposal for a work-family "framework" law to ensure coherence among different laws and programs affecting work-family balance. The paper concludes by confirming the need to move away from an individualized approach toward a more mainstreamed and collectivized approach to work-family balance. Résumé Bien que la nécessité de concilier travail et vie familiale ait fait l'objet d'une reconnaissance timide dans la législation et les politiques publiques au fil des ans, il n'y a pas eu de changement substantiel de l'archétype du travailleur « sans engagements » (homme) vers un nouveau modèle de « travailleur normal ». Au Canada et ailleurs, la protection législative ne permet pas aux femmes ou aux hommes d'arrimer efficacement leurs responsabilités professionnelles et familiales au cours de leur vie. Cet article examine les différentes façons dont la conciliation travail-famille est réglementée, particulièrement en droit fédéral canadien et dans la province de Québec, et souligne la nécessité d'une politique sociale et de travail cohérente. Le texte explore également le développement d'initiatives multipartites, y compris l'élaboration de normes volontaires de style ISO et une proposition de loi-cadre travail-famille afin d'assurer une cohérence entre les différents lois et programmes touchant la conciliation famille-travail au Québec. L'article conclut en confirmant la nécessité de passer d'une approche individualisée à une approche plus intégrée et collectivisée de la conciliation travail-famille.

  10. 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

  11. 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

  12. 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.

  13. IEEE 1588 Frequency and Time Transfer Measurements and Analysis: Clock, PDV, and Load

    DTIC Science & Technology

    2010-11-01

    6 1 _ 22)()( ixnixnixbandTDEV meanbandmeanbandmeanbandbandx   where       b aj ijmmeanband xix 1_ MATIE ...PDV data were processed with a selection of packets focused on minimum transit delay into an MATIE calculation. This is shown in the upper graph in...The MATIE calculation for this particular set of network PDV data comes very close to this straight line. In the lower graph, the measurements of

  14. Vacuum ultraviolet mass-analyzed threshold ionization spectroscopy of methylcyclohexane in the supersonic jet

    NASA Astrophysics Data System (ADS)

    Han, Songhee; Yoo, Hyun Sik; Ahn, Doo-Sik; Choi, Young S.; Kim, Sang Kyu

    2011-12-01

    Vacuum ultraviolet (VUV) mass-analyzed threshold ionization (MATI) spectrum of supersonically cooled methylcyclohexane has been obtained to give the precise adiabatic ionization energy of 9.6958 ± 0.0025 eV for the chair equatorial conformer. Vibrationally resolved MATI spectrum has been analyzed with the aid of density functional theory and Franck-Condon calculations. The MATI spectrum reflects the structural change upon ionization and its origin is discussed by inspecting the shapes of the valence orbitals involved in the ionization process. The spectroscopic implication of the structural interconversion above the certain energy level is discussed with theoretical calculations of molecular structures and energetics.

  15. 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).

  16. 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).

  17. VizieR Online Data Catalog: NGC5617 and Trumpler 22 stars BV mag and RV (De Silva+, 2015)

    NASA Astrophysics Data System (ADS)

    de Silva, G. M.; Carraro, G.; D'Orazi, V.; Efremova, V.; MacPherson, H.; Martell, S.; Rizzo, L.

    2016-08-01

    The photometry used in this paper comes from two sources. In the case of NGC 5617, modern CCD photometry in the UBVI passbands is available from Carraro (2011, Cat. J/A+A/536/A101). For Trumpler 22, only old photographic data exist (Haug, 1978A&AS...34..417H), and for this reason we exploit here a new data set. Photometry in UBVI was acquired at Las Campanas Observatory on the nights from 2011 June 03 and are published here for the first time. We stress that this setup (telescope/instrument) is the same that Carraro (2011, Cat. J/A+A/536/A101) used for NGC 5617. Spectra were collected on the 3.9 m Anglo-Australian Telescope (AAT) using the UCLES spectrograph (2012 March 5-6) and using the HERMES multi-object spectrograph (2014 August 22) under service observation time. (1 data file).

  18. 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).

  19. Backscatter and Transmission of Aerosol at UV Through Middle IR wavelengths

    DTIC Science & Technology

    1994-06-01

    14 april - !9 may - 19 may -16 june I6 june - i2 july , 12 july - 18 august 18 augut - 16 seprember Lztterfack 4 dec - 25 jan 25 jaA-19 feb !9 feb - 19...july - IS august * 18 august - 16 september Letterfrack 4 dec - 23 jan 25 jan - 19 feb 19 feb - 19 march 19 march - 14 april 14 april - 19 may 19 may

  20. VizieR Online Data Catalog: BM CVn V-band differential light curve (Siltala+, 2017)

    NASA Astrophysics Data System (ADS)

    Siltala, J.; Jetsu, L.; Hackman, T.; Henry, G. W.; Immonen, L.; Kajatkari, P.; Lankinen, J.; Lehtinen, J.; Monira, S.; Nikbakhsh, S.; Viitanen, A.; Viuho, J.; Willamo, T.

    2017-05-01

    The included files present the numerical data of our analysis of the BM CVn photometry. The data consists of differential Johnson V-band photometry using the star HD 116010 as the comparison star. The analysis has been performed using the previously published continuous period search (CPS) method, described in detail in Lehtinen et al., 2011A&A...527A.136L, Cat. J/A+A/527/A136. (4 data files).

  1. 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).

  2. 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).

  3. 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).

  4. 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).

  5. VizieR Online Data Catalog: Grids of stellar models V. (Meynet+ 1994)

    NASA Astrophysics Data System (ADS)

    Meynet, G.; Maeder, A.; Schaller, G.; Schaerer, D.; Charbonnel, C.

    1993-09-01

    Most outputs of massive star evolution critically depend on the mass loss rates. In order to broaden the comparison basis and to illustrate the effects of different mass loss rates, we have computed new sets of models, with initial masses between 12 and 120 M⊙, and metallicities, Z, between 0.001 and 0.040, with a mass loss rate increased by a factor of two during the phases when the stellar winds are believed to be essentially driven by the radiation pressure. A moderate core-overshooting and the new radiative opacities from Iglesias et al. (1992ApJ...397..717I) and Kurucz (1991) were taken into account. These models complete the homogeneous and extended theoretical database formed by the previous grids of this series, computed by Schaller et al. (1992, Cat. J/A+AS/96/269) for Z=0.020 and Z=0.001, by Schaerer et al. (1992, Cat. J/A+AS/98/523; 1993, Cat. J/A+AS/102/339) for Z=0.008 and Z=0.040 and by Charbonnel et al. (1993, Cat. J/A+AS/101/415) for Z=0.004. This paper closes this series. Of particular interest is the predicted behaviour of metal rich stars such as may be found in the inner regions of our Galaxy. New evolutionary connexions are found, in particular we show that the most massive and metal rich stars may spend a relatively long time as He and N enriched stars and may even end their evolution as white dwarfs. (33 data files).

  6. VizieR Online Data Catalog: SDSS DLA and absorber quasar samples (Murphy+, 2016)

    NASA Astrophysics Data System (ADS)

    Murphy, M. T.; Bernet, M. L.

    2016-07-01

    Using spectral slope fits of the SDSS DR7 quasar spectra, and the DLA/sub-DLA identifications of Noterdaeme et al. (2009, Cat. J/A+A/505/1087), we found that the 774 selected quasars with a single foreground DLA are significantly (3.2σ) redder, on average, than carefully selected control groups drawn from a sample of ~7000 quasars without foreground DLAs. (4 data files).

  7. VizieR Online Data Catalog: Coulour-Period relation for Cepheids (Scowcroft+, 2016)

    NASA Astrophysics Data System (ADS)

    Scowcroft, V.; Seibert, M.; Freedman, W. L.; Beaton, R. L.; Madore, B. F.; Monson, A. J.; Rich, J. A.; Rigby, J. R.

    2017-07-01

    In this work, we bring together the mid-IR, Warm Spitzer observations taken by the CCHP (Monson et al., 2012, Cat. J/ApJ/759/146, Scowcroft et al., 2011, Cat. J/ApJ/743/76, Scowcroft et al., 2016, Cat. J/ApJ/816/49), with spectroscopic metallicities compiled in genovali et al. (2014. Cat. J/A+A/566/A37). (1 data file).

  8. VizieR Online Data Catalog: TrES-2b multi-band transit observations (Mislis+, 2010)

    NASA Astrophysics Data System (ADS)

    Mislis, D.; Schroeter, S.; Schmitt, J. H. M. M.; Cordes, O.; Reif, K.

    2010-02-01

    The OLT data were taken on 11 April 2009 using a 3Kx3K CCD with a 1x1 FOV and an I-band filter as in our previous observing run (Paper I, Mislis & Schmitt, 2009, Cat. <J/A+A/500/L45>). The Calar Alto data were taken on 28 May 2009 using BUSCA and the 2.2m telescope. (1 data file).

  9. VizieR Online Data Catalog: Near-IR photometry in VVV CL08 (Ramirez Alegria+, 2014)

    NASA Astrophysics Data System (ADS)

    Ramirez Alegria, S.; Borissova, J.; Chene, A. N.; O'Leary, E.; Amigo, P.; Minniti, D.; Saito, R. K.; Geisler, D.; Kurtev, R.; Hempel, M.; Gromadzki, M.; Clarke, J. R. A.; Negueruela, I.; Marco, A.; Fierro, C.; Bonatto, C.; Catelan, M.

    2014-03-01

    Near infrared (J, H and Ks) photometry for the cluster most probable members. We use the VVV-SkZ pipeline (Mauro et al. 2013RMxAA..49..189M), to measure the photometry over the VVV stacked images. We determine the most probable members using the decontamination algorithm from Bonatto & Bica (2010A&A...516A..81B), as described by Borissova et al. (2011, Cat. J/A+A/532/A131). (1 data file).

  10. 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).

  11. Personalized design and virtual evaluation of physician-modified stent grafts for juxta-renal abdominal aortic aneurysms

    NASA Astrophysics Data System (ADS)

    Sanathkhani, Soroosh; Shroff, Sanjeev G.; Menon, Prahlad G.

    2017-02-01

    Endovascular aneurysm repair (EVAR) of juxtarenal aortic aneurysms (JAA) is particularly challenging owing to the requirement of suprarenal EVAR graft fixation, which has been associated with significant declines in long term renal function. Therefore, the ability to design fenestrated EVAR grafts on a personalized basis in order to ensure visceral and renal perfusion, is highly desirable. The objectives of this study are: a) To demonstrate novel 3D geometric methods to virtually design and deploy EVAR grafts into a virtually designed JAA, by applying a custom surface mesh deformation tool to a patient-specific descending aortic model reconstructed from computed tomographic (CT) images; and b) To virtually evaluate patient-specific renal flow and wall stresses in these patient-specific virtually EVAR geometries, using computational fluid dynamics (CFD). The presented framework may provide the modern cardiovascular surgeon the ability to leverage non-invasive, pre-operative imaging equipment to personalize and guide EVAR therapeutic strategy. Our CFD studies revealed that virtual EVAR grafting of a patient-specific JAA, with optimal fenestration sites and renal stenting, led to a 179.67±15.95% and 1051.43±18.34% improvement in right and left renal flow rates, respectively, when compared with the baseline patient-specific aortic geometry with renal stenoses, whereas a right and left renal flow improved by 36.44±2.24% and 885.93±12.41%, respectively, relative to the equivalently modeled JAA with renal stenoses, considering averages across the three simulated inflow rate cases. The proposed framework have utility to iteratively optimize suprarenal EVAR fixation length and achieve normal renal wall shear stresses and streamlined juxtarenal hemodynamics.

  12. 2010 Department of Defense Chief Freedom of Information Act Officer Report

    DTIC Science & Technology

    2010-03-19

    posted online for the public to submit electronic FOIA requests. Army-wide policy guidance dictates that electronic FOIA requests are to be received...made available through the AF/JAA websites, dissemination through the AF/JA Online News Service, and posted on the AF FOIA Community of Practice...track their requests online , call eFOIA Public Access Link. All requests are now being tracked in eFOIA with the exception of classified responsive

  13. 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).

  14. 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).

  15. VizieR Online Data Catalog: Chemical properties of red MSX sources (RMSs) (Yu+, 2016)

    NASA Astrophysics Data System (ADS)

    Yu, N.; Xu, J.

    2017-05-01

    Our molecular line data come from the Millimetre Astronomy Legacy Team Survey at 90GHz (MALT90) (e.g., Foster+ 2011, J/ApJS/197/25; Jackson+ 2013PASA...30...57J). This project is performed with Mopra, a 22m single-dish radio telescope located near Coonabarabran in New South Wales, Australia. The angular resolution of Mopra is 38", with a beam efficiency between 0.49 at 86GHz and 0.42 at 115GHz. The pointing accuracy of the main MALT90 maps is about 8", and the absolute flux uncertainty is in the range of 10%-17% depending on the transition in question. The target clumps of this survey are selected from the 870um Atacama Pathfinder Experiment (APEX) Telescope Large Area Survey of the Galaxy (ATLASGAL; Schuller+ 2009A&A...504..415S; Contreras+ 2013, J/A+A/549/A45; superseded by J/A+A/568/A41). Using Australia Telescope Compact Array (ATCA), Urquhart+ (2007, J/A+A/461/11) observed radio emissions of 826 Red Midcourse Space Experiment (MSX) Sources (RMSs) in the southern sky. We also have checked our sources with the data taken from the Sydney University Molonglo Sky Survey (SUMSS) carried out at 843MHz with the Molonglo Observatory Synthesis Telescope (MOST; Mauch+ 2003, VIII/81). See section 2 for further explanations. (5 data files).

  16. [Gender equality activity in the Bioimaging Society].

    PubMed

    Suzaki, Etsuko

    2013-09-01

    Gender equality activity in the Bioimaging Society was initiated in 2005 when it joined the Japan Inter-Society Liaison Association Committee for Promoting Equal Participation of Men and Women in Science and Engineering (EPMEWSE). The Gender Equality Committee of the Bioimaging Society is acting on this issue by following the policy of the EPMEWSE, and has also been planning and conducting lectures at annual meetings of the society to gain the understanding, consents, and cooperation of the members of the society to become conscious of gender equality. Women's participation in the society has been promoted through the activities of the Gender Equality Committee, and the number of women officers in the society has since increased from two women out of 40 members in 2005 to five out of 44 in 2013. The activities of the Gender Equality Committee of the Japanese Association of Anatomists (JAA) have just started. There are more than 400 women belonging to the JAA. When these women members join together and collaborate, women's participation in the JAA will increase.

  17. La matiere noire dans l'Univers.

    NASA Astrophysics Data System (ADS)

    Mamon, G.

    Parmi les mille questions que l'on peut se poser sur l'Univers, les plus fondamentales concernent son contenu : De quoi est faite la matière de l'Univers ? Est-ce que la matière de l'Univers est principalement constituée d'étoiles, ou bien de gaz interstellaire, de poussières interstellaires, de planètes, petits astéroïdes, ou de trous noirs ? Ou doit-on admettre que l'Univers est composé d'une autre forme de matière que l'on ne connaît pas, qui serait basée sur des particules élémentaires plus exotiques que les protons, neutrons et électrons qui constituent la matière ordinaire, dite baryonique?

  18. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2012-05-01

    L'anneau F de Saturne; Planètes rocheuses et zone habitable; Lentilles gravitationnelles; Neutrinos volages; Compter les bulles; BOSS; Kepler; Tourbillon martien; Pointillés martiens; Bombardement; Trous noirs voraces; Matière noire

  19. 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.

  20. Mass-analyzed threshold ionization study of vinyl bromide cation in the first excited electronic state using vacuum-ultraviolet radiation generated by four-wave mixing in Hg

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Myung Soo

    2005-11-01

    The vibrational spectrum of the vinyl bromide cation in the first excited electronic state ÃA'2 was obtained by one-photon mass-analyzed threshold ionization (MATI) spectroscopy. The use of an improved vacuum-ultraviolet radiation source based on four-wave sum frequency mixing in Hg resulted in excellent sensitivity for MATI signals. From the MATI spectrum, the ionization energy to the ÃA'2 state of the cation was determined to be 10.9150±0.0006eV. Nearly complete vibrational assignments for the MATI peaks were possible by utilizing the vibrational frequencies and Franck-Condon factors calculated at the density-functional theory (DFT) and time-dependent DFT/B3LYP levels with the 6-311+G(df,p) basis set.

  1. Epitope mapping of four monoclonal antibodies recognizing the hexose core domain of Salmonella lipopolysaccharide.

    PubMed

    Luk, J M; Lind, S M; Tsang, R S; Lindberg, A A

    1991-12-05

    Four murine monoclonal antibodies reactive with distinctive regions of the hexose core domain of Salmonella lipopolysaccharide (LPS) were generated and their epitope specificities were delineated. MAST 56 (IgG1) and MAST 50 (IgG3) antibodies elicited by immunizations with Salmonella typhimurium Rb1 and Rb2 mutants, reacted selectively in enzyme immunoassay with the LPS from rough mutants. In contrast, MATy 1 (IgM) and MATy 2 (IgG2b) antibodies raised by an attenuated Salmonella typhi 620 Ty strain were reactive with LPS from both smooth and rough Salmonellae. Immunoblotting analysis showed that MATy 1 distinguished only the bottom bands (naked LPS core) among the heterogeneous LPS populations, whereas MATy 2 gave a ladder pattern (reactive with both naked and O-chain-substituted LPS cores). Differential binding specificities of MATy 1 and MATy 2 antibodies to the naked and capped LPS cores were further analyzed utilizing S. typhimurium polysaccharide fractions with different O-chain:core ratios which were obtained after separation by Sephacryl S-200 chromatography. Steric effects on the antibody reactivity by the bulky O-polysaccharide chain were detected. The use of chemically defined native and synthetic saccharides as inhibitors, in combination with the conformation of the Salmonella core oligosaccharide, permitted the definition of antigenic determinants carried in the core domain recognized by each antibody: (i) the branches I and VIII are essential for MATy 1 recognition, (ii) the backbone III-IV-V for MATy 2, (iii) the backbone II-III-IV-V for MAST 56, and (iv) the backbone plus the branch III-IV-V-VIII for MAST 50. (formula; see text)

  2. Investigation of a Two-Dimensional Model for the Prediction of Static Displacement for T-38 Horizontal Stabilators Using NASTRAN.

    DTIC Science & Technology

    1981-12-01

    physical characteristics of the element, such as thickness, material identifiers, inertias, mass. 20 2. Material Cards (MATI, MAT2 ) described the...material characteristics, such as Young’s modulus, shear modulus, Poisson’s ratio. MATI was used for isotropic material. MAT2 was used for orthotropic...generated as necessary, based on fixed mesh size. Module 15 - Output MAT1 and MAT2 material property cards. These are explicit except for variations

  3. Ionization energy of acetone by vacuum ultraviolet mass-analyzed threshold ionization spectrometry

    NASA Astrophysics Data System (ADS)

    Kim, Jae Han; Kang, Do Won; Hong, Yong Jun; Hwang, Hyonseok; Kim, Hong Lae; Kwon, Chan Ho

    2013-04-01

    Mass-analyzed threshold ionization (MATI) time-of-flight mass spectrometer using coherent vacuum ultraviolet (VUV) laser generated by four-wave difference frequency mixing (FWDFM) in Kr has been constructed and utilized to obtain the accurate ionization energy of acetone. From the MATI onsets measured from various applied pulsed fields, the ionization energy to the ionic ground state of acetone has been determined to be 9.7074 ± 0.0019 eV.

  4. Vibrational levels of p-xylene cation determined by mass-analyzed threshold ionization spectroscopy

    NASA Astrophysics Data System (ADS)

    Zhang, Bing; Aigner, Udo; Ludwig Selzle, Heinrich; William Schlag, Edward

    2003-10-01

    Mass-analyzed threshold ionization (MATI) spectroscopy and two-color resonant two-photon ionization method were used for the determination of the vibrational levels of the p-xylene cation. The MATI spectrum was recorded via the 0 0 vibrationless level of the S 1 state of p-xylene. The spectrum shows a rich structure and some vibrational frequencies of the cation are determined. The experimental findings are well supported by ab initio calculation.

  5. Submarine Structure Modeling and Analysis for Life-Cycle Management: Phase 2

    DTIC Science & Technology

    2008-05-01

    spéciaux de coque pour le cas de la jonction de plaque qui ne contiennent pas de chevauchements de matière. Une très bonne concordance est obtenue...de la jonction de plaque qui ne contiennent pas de chevauchements de matière. Une très bonne concordance est obtenue entre les résultats numériques et

  6. Novel Sexual-Cycle-Specific Gene Silencing in Aspergillus nidulans

    PubMed Central

    Czaja, Wioletta; Miller, Karen Y.; Miller, Bruce L.

    2013-01-01

    We report a novel sexual-cycle-specific gene-silencing system in the genetic model Aspergillus nidulans. Duplication of the mating type matAHMG gene in this haploid organism triggers Mat-induced silencing (MatIS) of both endogenous and transgenic matA genes, eliminates function of the encoded SRY structural ortholog, and results in formation of barren fruiting bodies. MatIS is spatiotemporally restricted to the prezygotic stage of the sexual cycle and does not interfere with vegetative growth, asexual reproduction, differentiation of early sexual tissues, or fruiting body development. MatIS is reversible upon deletion of the matA transgene. In contrast to other sex-specific silencing phenomena, MatIS silencing has nearly 100% efficiency and appears to be independent of homologous duplicated DNA segments. Remarkably, transgene-derived matA RNA might be sufficient to induce MatIS. A unique feature of MatIS is that RNA-mediated silencing is RNA interference/Argonaute-independent and is restricted to the nucleus having the duplicated gene. The silencing phenomenon is recessive and does not spread between nuclei within the common cytoplasm of a multinucleate heterokaryon. Gene silencing induced by matA gene duplication emerges as a specific feature associated with matAHMG regulation during sexual development. PMID:23341415

  7. Novel sexual-cycle-specific gene silencing in Aspergillus nidulans.

    PubMed

    Czaja, Wioletta; Miller, Karen Y; Miller, Bruce L

    2013-04-01

    We report a novel sexual-cycle-specific gene-silencing system in the genetic model Aspergillus nidulans. Duplication of the mating type matA(HMG) gene in this haploid organism triggers Mat-induced silencing (MatIS) of both endogenous and transgenic matA genes, eliminates function of the encoded SRY structural ortholog, and results in formation of barren fruiting bodies. MatIS is spatiotemporally restricted to the prezygotic stage of the sexual cycle and does not interfere with vegetative growth, asexual reproduction, differentiation of early sexual tissues, or fruiting body development. MatIS is reversible upon deletion of the matA transgene. In contrast to other sex-specific silencing phenomena, MatIS silencing has nearly 100% efficiency and appears to be independent of homologous duplicated DNA segments. Remarkably, transgene-derived matA RNA might be sufficient to induce MatIS. A unique feature of MatIS is that RNA-mediated silencing is RNA interference/Argonaute-independent and is restricted to the nucleus having the duplicated gene. The silencing phenomenon is recessive and does not spread between nuclei within the common cytoplasm of a multinucleate heterokaryon. Gene silencing induced by matA gene duplication emerges as a specific feature associated with matA(HMG) regulation during sexual development.

  8. Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses

    NASA Astrophysics Data System (ADS)

    Yuan, Kai-Jun; Bandrauk, André D.

    2011-07-01

    We present molecular above-threshold ionization (MATI) spectra generated by ultrashort intense linearly and circularly polarized laser pulses from nonperturbative numerical solutions of the corresponding time-dependent Schrödinger equation in the molecular-ion H2+. It is found that high-order MATI spectra with maximum kinetic energy 32Up, where Up=I0/4meω02 is the ponderomotive energy at intensity I0 and frequency ω0, can be obtained in H2+ at great internuclear distances R for both linear and circular polarizations. Quasiclassical laser-induced collision models confirm that such high-order MATIs mainly result from a collision with neighboring ions of the ionized electron. Interference patterns in the high-order MATI spectra are critically sensitive to both the internuclear distance R of the molecules and the polarizations of the driving laser pulses. Moreover, with few-cycle laser pulses, the carrier-envelope phase sensitivity of MATI angular distributions is also investigated for varying internuclear distances R. At critical internuclear distances for charge-resonance-enhanced ionization, we also find that enhanced interference patterns occur.

  9. Angle-dependent molecular above-threshold ionization with ultrashort intense linearly and circularly polarized laser pulses

    SciTech Connect

    Yuan, Kai-Jun; Bandrauk, Andre D.

    2011-07-15

    We present molecular above-threshold ionization (MATI) spectra generated by ultrashort intense linearly and circularly polarized laser pulses from nonperturbative numerical solutions of the corresponding time-dependent Schroedinger equation in the molecular-ion H{sub 2}{sup +}. It is found that high-order MATI spectra with maximum kinetic energy 32U{sub p}, where U{sub p}=I{sub 0}/4m{sub e}{omega}{sub 0}{sup 2} is the ponderomotive energy at intensity I{sub 0} and frequency {omega}{sub 0}, can be obtained in H{sub 2}{sup +} at great internuclear distances R for both linear and circular polarizations. Quasiclassical laser-induced collision models confirm that such high-order MATIs mainly result from a collision with neighboring ions of the ionized electron. Interference patterns in the high-order MATI spectra are critically sensitive to both the internuclear distance R of the molecules and the polarizations of the driving laser pulses. Moreover, with few-cycle laser pulses, the carrier-envelope phase sensitivity of MATI angular distributions is also investigated for varying internuclear distances R. At critical internuclear distances for charge-resonance-enhanced ionization, we also find that enhanced interference patterns occur.

  10. Acculturation and Perceptions of a Good Death among Japanese Americans and Japanese Living in the United States.

    PubMed

    Mori, Masanori; Kuwama, Yuichiro; Ashikaga, Takamaru; Parsons, Henrique A; Miyashita, Mitsunori

    2017-08-22

    Acculturation is the phenomenon of the attitudinal changes of individuals who come into continuous contact with another culture. Despite the long history of Japanese immigration to America, little is known about the impact of acculturation on perceptions of a good death. To examine differences in perceptions of a good cancer death among Japanese Americans (JA/A), Japanese living in America (J/A), and the Japanese living in Japan (J/J). We administered surveys among JA/A and J/A, and used historical J/J data for reference. Primary endpoint was the proportion of respondents who expressed the necessity of core and optional items of the Good Death Inventory. Group differences ≥20% were deemed clinically important. 441 survey responses in America and 2,548 in Japan were obtained. More than 80% of respondents consistently considered 9 of 10 core items necessary without significant group differences. No core item reached a ≥20% group difference. Three of the 8 optional items reached ≥20% group difference: 'fighting against disease until one's last moment' (49%, p<0.0001; 52%, p<0.0001; and 73% in JA/A; J/A; and J/J; respectively), 'knowing what to expect about one's condition in the future' (83%, p<0.0001; 80%, p<0.0001; and 58%, respectively), and 'having faith' (64%, p=0.0548; 43%, p=0.0127; and 38%, respectively). While most core items of a good death were preserved throughout the levels of acculturation, perceptions of some optional items shifted away from Japanese attitudes as individuals became more acculturated. Understanding of different levels of acculturation may help clinicians provide culturally-sensitive end-of-life care. Copyright © 2017. Published by Elsevier Inc.

  11. VizieR Online Data Catalog: Stellar encounters with long-period comets (Feng+, 2015)

    NASA Astrophysics Data System (ADS)

    Feng, F.; Bailer-Jones, C. A. L.

    2016-07-01

    We have conducted simulations of the perturbation of the Oort cloud in order to estimate the significance of known encounters in generating long-period comets. We collected the data of stellar encounters from three sources: (Bailer-Jones, 2015, Cat. J/A+A/575/A35, hereafter BJ15), Dybczynski & Berski (2015MNRAS.449.2459D), and Mamajek et al. (2015ApJ...800L..17M). Following BJ15, we use the term 'object' to refer to each encountering star in our catalogue. A specific star may appear more than once but with different data, thus leading to a different object. (1 data file).

  12. 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.

  13. VizieR Online Data Catalog: XMM sources in IC 1805 (Rauw+, 2016)

    NASA Astrophysics Data System (ADS)

    Rauw, G.; Naze, Y.

    2016-08-01

    The table provides the full catalogue of X-ray sources detected with the EPIC instruments onboard XMM-Newton inside the IC1805 cluster. The sources are ordered by increasing right ascension. The coordinates of the sources were cross-correlated with the optical and IR catalogues of Straizys et al. (2013, Cat. J/A+A/554/A3), Wolff et al. (2011, Cat. J/ApJ/726/19), and the SIMBAD catalogue. We adopted in each case a correlation radius of 4 arcsec. (1 data file).

  14. [Revisions in the assessment of fitness for aircraft flying].

    PubMed

    Draeger, J

    2000-06-01

    So far medical requirements for aviators have been defined by national licensing authorities. For a long while ophthalmological problems, insufficiencies in vision, refraction or color vision, have been responsible for approximately 50% of rejection of applicants for medical reasons. New international regulations proposed as well by ICAO as JAA try to lead to a new balance in these requirements. In general, ophthalmological requirements now allow for lower standards, specifically in refraction, but also in color vision. Also new examination methods are admitted. German and French authorities have announced their opposition being concerned about flight safety for the future.

  15. VizieR Online Data Catalog: Gaia SB2 radial velocity curves (Kiefer+, 2016)

    NASA Astrophysics Data System (ADS)

    Kiefer, F.; Halbwachs, J.-L.; Arenou, F.; Pourbaix, D.; Famaey, B.; Guillout, P.; Lebreton, Y.; Nebot Gomez-Moran, A.; Mazeh, T.; Salomon, J.-B.; Soubiran, C.; Tal-Or, L.

    2017-02-01

    The observations were performed at the T193 telescope of the Haute-Provence Observatory, with the SOPHIE spectrograph. SOPHIE is dedicated to the search of extrasolar planets, and, thanks to its high resolution (R~75000), it enables accurate stellar RVs to be measured for SB2 components. The RVs of the components are derived using the TwO-Dimensional CORrelation algorithm todcor (Zucker & Mazeh 1994ApJ...420..806Z; Zucker et al. 2004, Cat. J/A+A/426/695). (2 data files).

  16. VizieR Online Data Catalog: CaII triplet equivalent widths in 30 globulars (Mauro+, 2014)

    NASA Astrophysics Data System (ADS)

    Mauro, F.; Moni Bidin, C.; Geisler, D.; Saviane, I.; da Costa, G. S.; Gormaz-Matamala, A. C.; Vasquez, S.; Chene, A.-N.; Cohen, R.; Dias, B.

    2014-03-01

    Our main target list consists of the GCs analyzed by S12 (Saviane et al., 2012, Cat. J/A+A/540/A27). The NIR imaging collected in the context of the VVV Survey was used for all clusters included in the survey area. We also checked whether any of the GCs in the dataset not observed by the VVV Survey had useful 2MASS photometry, that would permit us to determine the RHB position. We similarly selected GCs from the R97 (Rutledge et al., 1997PASP..109..907R) catalog to determine a calibration for this dataset as well (2 data files).

  17. Studies on 1-Trimethylsilyl-2,4,6-Triethylborazine and Related Species.

    DTIC Science & Technology

    1991-09-01

    analogous conditions. beh5 on ap proved 91-10249 f~i p :bi c c’i cs~ n d sale ; its I Ig’I~ I I~ l ~ 1~ I (X’.CtAFfAO j4LA,TF 0 JAA -,; C] n iea...Government This document has been approved for public release and sale ; its distribution is unlimited Studies on 1-Trimethylsilyl-2,4,6-triethylborazine...Floriani Department of Chemistry Institut de Chimie University of Pittsburgh Minerale et Analytique Pittsburgh, PA 15260 Universite de Lausanne Place du

  18. VizieR Online Data Catalog: YSOs in Herschel-Hi-GAL survey (Veneziani+, 2013)

    NASA Astrophysics Data System (ADS)

    Veneziani, M.; Elia, D.; Noriega-Crespo, A.; Paladini, R.; Carey, S.; Faimali, A.; Molinari, S.; Pestalozzi, M.; Piacentini, F.; Schisano, E.

    2012-09-01

    File yso.dat contains the photometry and distances of the identified Young Stellar Objects (YSO) in two 2x2 tiles of the Herschel-Hi-GAL survey. The fields are centered in (l,b)=(30,0) and (l,b)=(59,0). The detection and photometry from 24 micron to 500 micron have been extracted with the CuTEX algorithm (Molinari et al., 2011A&A...530A.133M) while the kinematic distances have been estimated by Russeil et al. (2011, Cat. J/A+A/526/A151). (1 data file).

  19. VizieR Online Data Catalog: Pan-STARRS1 (PS1) observations of the Hyades (Goldman+, 2013)

    NASA Astrophysics Data System (ADS)

    Goldman, B.; Roeser, S.; Schilbach, E.; Magnier, E. A.; Olczak, C.; Henning, T.; Juric, M.; Schlafly, E.; Chen, W. P.; Platais, I.; Burgett, W.; Hodapp, K.; Heasley, J.; Kudritzki, R. P.; Morgan, J. S.; Price, P. A.; Tonry, J. L.; Wainscoat, R.

    2014-04-01

    Photometric and kinematic parameters for 774 Hyades member candidates, from the PPMXL, PS1, SDSS DR8 and WISE surveys. The convergent point method used for the kinematic selection predicts the secular parallax and space velocity of the objects assuming Hyades membership. The table includes the original parameters for the 711 confirmed candidates published in Roeser et al (2011, Cat. J/A+A/531/A92), complemented by PS1 and WISE photometry. as well as the new 62 candidates. (1 data file).

  20. VizieR Online Data Catalog: PAH features of AGN (Jensen+, 2017)

    NASA Astrophysics Data System (ADS)

    Jensen, J.; Hoenig, S. F.; Rakshit, S.; Alonso-Herrero, A.; Asmus, D.; Gandhi, P.; Kishimoto, M.; Smette, A.; Tristram, K. R. W.

    2017-06-01

    We use archival low-resolution 8-13um spectroscopic data from Very Large Telescope Spectrometer and Imager for the mid-InfraRed (VISIR) observations of a sample of local AGN (Hoenig et al. 2010A&A...515A..23H; Burtscher et al. 2013, Cat. J/A+A/558/A149). We supplement these data with new, unpublished observations taken in 2005, 2008 and 2010, which represent VISIR spectra for Circinus, ESO 138-G001, F9, F49 and NGC 1068. (2 data files).

  1. VizieR Online Data Catalog: I photometry of very low mass ONC stars (Rodriguez-Ledesma+, 2009)

    NASA Astrophysics Data System (ADS)

    Rodriguez-Ledesma, M. V.; Mundt, R.; Eisloeffel, J.

    2009-06-01

    Table 1 lists the 2908 very low mass objects in the Orion Nebula Cluster with magnitudes between 14-21mag in I band for which accurate photometry was performed. It contains the position, brightness and type of variability of these stars, as well as 2MASS counterparts when available. Table 2 lists the 487 objects found to be periodic in this study, for which their brightness, period and peak-to-peak amplitudes a re given, as well as periods measured in Herbst et al. 2002 (Cat. J/A+A/396/513) when available. (2 data files).

  2. VizieR Online Data Catalog: MALT90 pilot survey (Foster+, 2011)

    NASA Astrophysics Data System (ADS)

    Foster, J. B.; Jackson, J. M.; Barnes, P. J.; Barris, E.; Brooks, K.; Cunningham, M.; Finn, S. C.; Fuller, G. A.; Longmore, S. N.; Mascoop, J. L.; Peretto, N.; Rathborne, J.; Sanhueza, P.; Schuller, F.; Wyrowski, F.

    2012-01-01

    We used six different input catalogs for selecting sources; three were lists that we produced for our pilot survey and three were based on pre-existing catalogs (Walsh et al. (2008PASA...25..105W), Beltran et al. (2006, Cat. J/A+A/447/221) and Schuller et al. (2009A&A...504..415S)). From these lists we chose 20-40 sources near integer Galactic longitudes covering the range of longitudes accessible from Mopra. We carried out observations for the MALT90 pilot survey in the austral winter of 2009 from June 15 to 24, the OTF mapping mode of Mopra. (3 data files).

  3. VizieR Online Data Catalog: Coupling factors of 5166 KIC (Mosser+, 2017)

    NASA Astrophysics Data System (ADS)

    Mosser, B.; Pincon, C.; Belkacem, K.; Takata, M.; Vrard, M.

    2017-08-01

    Seismic global parameters of the stars listed in the paper. Each star is identified with its KIC number (Kepler Input Catalog). Coupling factors of mixed modes were measured for thousands of red giants. They show specific variation with mass and evolutionary stage. Weak coupling is observed for the most evolved stars on the red giant branch only; large coupling factors are measured at the transition between subgiants and red giants as well as in the red clump. Period spacings and evolutionary stages are from Vrard et (2016, Cat. J/A+A/588/A87). (1 data file).

  4. VizieR Online Data Catalog: Stellar parameters and abundances for M30 (Gruyters+, 2016)

    NASA Astrophysics Data System (ADS)

    Gruyters, P.; Lind, K.; Richard, F.; Grundahl, O.; Asplund, M.; Casagrande, L.; Charbonnel, C.; Milone, A.; Primas, F.; Korn, A. J.

    2016-03-01

    Coordinates, photometry and derived effective temperatures for the 144 observed stars in M30. Effective temperatures where derived using three different temperature scales: a scale based on a Victoria isochrone (Vandenberg et al., 2014ApJ...794...72V), a scale based on the Alonso relations (Alonso, 1996A&A...313..873A, 1999A&AS..140..261A) and a scale based on the Ramirez (2005ApJ...626..465R) and Casagrande (2010A&A...512A..54C, Cat. J/A+A/512/A54) relations. Additionally, the derived Hα temperatures are given. (2 data files).

  5. 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

  6. 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).

  7. [Disinfection of caliciviruses at 20 and 10 degrees C].

    PubMed

    Yilmaz, A; Kaleta, E F

    2003-07-01

    Five disinfectants, Venno FF super, Venno Vet 1 super, Venno Oxygen, M&Enno-Veterinär B neu und Neopredisan 135-1, were tested to evaluate their efficacy against caliciviruses at 20 and 10 degrees C. As model test virus served feline calicivirus type F9 (FCV F9). All disinfectants were tested according to Guidelines of the German Veterinary Association (DVG). The investigations were performed in suspension tests and germ carrier tests. The suspension tests were carried out without and with protein load. As protein was used foetal calf serum at the concentration of 40%. Venno FF super showed less protein dependence, however a considerable temperature dependence. This matter can be corrected by increase of concentration on 2%. Venno Vet 1 super was without protein especially effective. The losses on the effectiveness through low temperature and protein load can be annulled also here by increase of concentration. Venno Oxygen was more effective in the comparison to that here named both preparations. The effects of temperature can be corrected by extension of reaction time. The most effective preparation was M&Enno Veterinär B neu. The disinfection occurred at 20 degrees C with 0.5% solution within 120 min and at 10 degrees C with 1.0% solution within 60 min. The fifth disinfectant Neopredisan was in suspension tests without protein load and carrier tests with gauze at 20 and 10 degrees C relative convincing but in germ carrier tests with poplar wood, no complete disinfection could be achieved within tested concentrations and reaction times.

  8. Mass-Analyzed Threshold Ionization Spectroscopy of 2-Phenylethanol: Probing of Conformational Changes Caused by Ionization

    NASA Astrophysics Data System (ADS)

    Georgiev, S.; Karaminkov, R.; Chervenkov, S.; Delchev, V.; Neusser, H. J.

    2009-10-01

    The vibrational structure of the ionic ground state of different conformers of the biologically relevant molecule 2-phenylethanol has been investigated by combination of two-photon two-color mass-analyzed threshold ionization spectroscopy (MATI) and quantum chemical calculations at M05, MP2, and coupled cluster (CC) levels of theory with extended basis sets. MATI spectra recorded via gauche vibronic bands are with poor structure and increasing background, whereas the ones measured via vibronic bands of the anti conformers feature well-resolved vibronic structure in the cation. Ab initio computations predict three stable conformers for the 2-phenylethanol cation out of five initial neutral structures. None of the theoretical structures in the cation features a nonclassical OH···π hydrogen bond in conjunction with the analysis of the MATI spectra. This provides clear evidence that the OH···π hydrogen bond stabilizing the lowest-energy gauche conformer in the neutral breaks upon ionization.

  9. A theoretical analysis on the vibronic spectra with mass analyzed threshold ionization spectroscopy

    NASA Astrophysics Data System (ADS)

    Chao, Sheng D.; Peng, Hsin Y.

    2008-01-01

    We have theoretically studied the absorption vibronic spectra with the resonance two-photon (R2P) and non-resonance two-photon (NR2P) mass analyzed threshold ionization (MATI) spectroscopy. The theory uses the inverse Born-Oppenheimer approximation (IBOA) to establish a proper basis set. To analyze the MATI vibronic spectra, we have calculated the Franck-Condon factors involved in the vibronic transitions. Several experimental spectra are analyzed using this theory with emphasis on the importance of the resonance intermediate states. The long vibrational progression in a MATI spectrum can be partly attributed to the result of including the anharmonic correction in the calculated Franck-Condon factors. The experimentally observed isotope effect is also analyzed.

  10. Dynamique de l'atmosphère solaire.

    NASA Astrophysics Data System (ADS)

    Mein, P.

    Contents: (1) Introduction. (2) Conditions physiques dans l'atmosphère solaire. (3) Diagnostic des vitesses de matière. (4) Mouvements hydrodynamiques: rotation et convection, ondes: (4.1) Rotation différentielle. (4.2) Circulation méridienne. (4.3) Supergranulation, Mésogranulation, Granulation. (4.4) Ondes en l'absence de champ magnétique. (5) Mouvements et champ magnétique: (5.1) Dynamique des tubes de flux photosphériques. (5.2) Dynamique des taches. (5.3) Protubérances et filaments. (5.4) Ejections de matière.

  11. Mass analyzed threshold ionization spectroscopy of indazole cation

    NASA Astrophysics Data System (ADS)

    Su, Huawei; Pradhan, Manik; Tzeng, Wen Bih

    2005-08-01

    We have recorded the two-color resonant two-photon mass analyzed threshold ionization (MATI) spectra of indazole via four intermediate states. The adiabatic ionization energy of this molecule is determined to be 67 534 ± 5 cm -1. The observed MATI bands include in-plane ring bending as well as out-of-plane ring twisting and bending vibrations of the indazole cation. Comparing the present data with those of indole and 7-azaindole leads to a better understanding about the influence of the nitrogen atom in the aza-aromatic bicyclic system.

  12. Mass analyzed threshold ionization spectroscopy of p-cyanophenol cation and the CN substitution effect

    NASA Astrophysics Data System (ADS)

    Li, Changyong; Pradhan, Manik; Tzeng, Wen Bih

    2005-08-01

    The adiabatic ionization energy of p-cyanophenol has been determined to be 72 698 ± 5 cm -1 (9.0134 ± 0.0006 eV) on the basis of mass analyzed threshold ionization (MATI) spectrscopy. Analysis of the newly obtained MATI spectra gives the respective frequencies of 399, 517 and 820 cm -1 for the ring deformation 6a, C-CN bending, and breathing vibrations of the p-cyanophenol cation. Comparing these experimental data with those of phenol leads to a better understanding about the influence of the CN substituent on the ionization energy and molecular vibration.

  13. Application of the Semantics Enrichment Concept in the Information Fusion for Command Support

    DTIC Science & Technology

    2006-12-01

    pour le commandement - La réponse MATIS - in Revue scientifique et technique de la Défense - n°25. Juin 1994. Renouard F., Rossazza J.P. - Fasade : un...that A’(β) ⊂ A (β). In the observation space of a perceptual system will only be re -found the fragments of OB noted : O(β), for reasons mentioned...applied in a research project : MATIS . ∆ Φ Ω α 0.1 0.2 0 M(RAxB) x M(RBxC) = β 0.2 0 0 γ 0.1 0.2 0.3 Application of the

  14. Active vibrations of 1-cyanonaphthalene cation studied by mass-analyzed threshold ionization spectroscopy

    NASA Astrophysics Data System (ADS)

    Shivatare, Vidya; Tzeng, Sheng Yuan; Tzeng, Wen Bih

    2013-02-01

    We apply the two-color resonant two-photon mass-analyzed threshold ionization (MATI) spectroscopic technique to record the cation spectra of 1-cyanonaphthalene via four intermediate vibronic levels. The adiabatic ionization energy is determined to be 69 466 ± 5 cm-1. The distinct bands at 416, 472, 516, 669, and 852 cm-1 result from in-plane ring deformation vibrations of the cation. Analysis of these MATI spectra suggests that the molecular geometry and vibrational coordinates of the observed vibrations of the cation in the ground D0 state resemble those of the neutral in the electronically excited S1 state.

  15. VizieR Online Data Catalog: SX Phe stars in globular clusters (Cohen+, 2012)

    NASA Astrophysics Data System (ADS)

    Cohen, R. E.; Sarajedini, A.

    2012-06-01

    To compile a current list of SX Phe in GGCs, we began with the catalogue of Rodriguez & Lopez-Gonzalez (2000, Cat. J/A+A/359/597), which was updated by Santolamazza et al. (2001ApJ...554.1124S). We then added to this list all SX Phe in GGCs found in the literature since the publication of those studies. This more than doubled the number of SX Phe in GGCs, from 117 listed by Santolamazza et al. (2001ApJ...554.1124S) to 263 currently known. For the sake of homogeneity, we have excluded the small number of SX Phe in E 3, IC 4499 and Ruprecht 106 from our analysis because isochrone fits to those clusters were not performed by D10. In addition, we have excluded all stars from the original Rodriguez & Lopez-Gonzalez (2000, Cat. J/A+A/359/597) catalogue which were also excluded by Santolamazza et al. (2001ApJ...554.1124S), as well as all SX Phe in NGC 3201 and 4372 due to high differential reddening (Gerashchenko, Kadla & Malakhova, 1999ARep...43...20G; Piersimoni, Bono & Ripepi, 2002AJ....124.1528P). (1 data file).

  16. VizieR Online Data Catalog: UBVRI observations of FKSZ stars (Carrasco+ 1986-1997)

    NASA Astrophysics Data System (ADS)

    Carrasco, G.; Loyola, P.; Moreno, H.; Ledoux, C.

    2010-11-01

    In a series of papers in the A&A Supplements, Carrasco et al. provide very good UBVRI data for about 1000 stars. The stars are variously identified in the source papers, and are variously integrated into the General Catalog of Photometric Data (GCPD, see Cat. II/267). I have made a combined file showing HD numbers for the stars along with coordinates. The last two lists are available in VizieR (items J/A+AS/100/489 and J/A+AS/126/311). The GCPD shows all the papers, but for one it omits the VRI colors. The GCPD does usefully compute R-I colors, which are added here as well (Carrasco et al.give V-R and V-I). The stars are arranged in the order they appear in the papers, i.e. with the E-region standards first, then the general field stars. The authors calibrated their data consistently against Graham E-region standards. While adding the completed list to my comprehensive file, I noticed additional stars in common with the Cousins F-region standards, Landolt stars, and with GSPC stars (see Cat. II/272) observed in UBVRI at SAAO. These can all be considered as "pretty good" standards or secondary standards. The Carrasco data look especially good in this comparison, excepting the first paper with Moreno (1986A&AS...65...33M). (1 data file).

  17. 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).

  18. VizieR Online Data Catalog: G and K giant stars stellar parameters (Reffert+, 2015)

    NASA Astrophysics Data System (ADS)

    Reffert, S.; Bergmann, C.; Quirrenbach, A.; Trifonov, T.; Kuenstler, A.

    2014-11-01

    The stellar parameters of 373 G and K giant stars were derived via a comparison of the position in the color-magnitude diagram with evolutionary tracks from Girardi et al. (2000A&AS..141..371G, Cat. J/A+AS/141/317). A trilinear interpolation in the tracks was performed to obtain stellar parameters for the observed position in the color-magnitude diagram. Errors on stellar parameters were derived from Monte Carlo simulations, taking the measurement errors in the input data into account. B-V magnitude and absolute V magnitude M_V are based on Hipparcos data (version of van Leeuwen 2007, ASSL 350, Springer, Cat. I/311). The spectroscopic metallicity from Hekker & Melendez (2007A&A...475.1003H, Cat. J/A+A/475/1003) was taken into account in the derivation of stellar parameters. In many cases the comparison with evolutionary tracks yielded two results: one solution for the red giant branch (RGB) and one solution for the horizontal branch (HB). Both solutions are given, if applicable. In addition, a probability is given for the star to be either on the RGB or on the HB, which was derived taken the initial mass function as well as the evolutionary time scales at certain evolutionary stages into account. (1 data file).

  19. VizieR Online Data Catalog: CaII triplet in red giant spectra (Da Costa, 2016)

    NASA Astrophysics Data System (ADS)

    da Costa, G. S.

    2016-07-01

    The data for this study consist of observations of Galactic globular and open clusters, which are used to provide a calibration between CaII triplet line strength and abundance [Fe/H], and observations of a sample of red giants in the disc of the LMC originally studied at high dispersion by Pompeia et al. (2008, Cat. J/A+A/480/379), and for which an updated analysis is available in Van der Swaelmen et al. (2013, Cat. J/A+A/560/A44). All observations were carried out at the Anglo-Australian Telescope using the 2dF multi-object fibre positioner and the AAOmega dual beam spectrograph1. The red arm of the spectrograph was configured with the 1700D grating centred at ~8600Å to give coverage of the CaII triplet lines with a resolution R of approximately 10000. The corresponding blue spectra are not used in this work. (2 data files).

  20. VizieR Online Data Catalog: Jellyfish galaxy candidates in galaxy clusters (Poggianti+, 2016)

    NASA Astrophysics Data System (ADS)

    Poggianti, B. M.; Fasano, G.; Omizzolo, A.; Gullieuszik, M.; Bettoni, D.; Moretti, A.; Paccagnella, A.; Jaffe, Y. L.; Vulcani, B.; Fritz, J.; Couch, W.; D'Onofrio, M.

    2016-10-01

    WIde-field Nearby Galaxy-cluster Survey (WINGS) is a large survey targeting 76 clusters of galaxies selected on the basis of their X-ray luminosity (Ebeling et al. 1996, Cat. J/MNRAS/281/799; Ebeling et al. 1998, Cat. J/MNRAS/301/881; Ebeling et al. 2000, Cat. J/MNRAS/318/333), covering a wide range in cluster masses (σ=500-1200+km/s, logLX=43.3-45erg/s, Fasano et al. 2006A&A...445..805F). The original WINGS data set consisted of B and V deep photometry of a 34'*34' field of view with the WFC@INT and the WFC@2.2mMPG/ESO (Varela et al. 2009, Cat. J/A+A/497/667), spectroscopic follow-ups with 2dF@AAT and WYFFOS@WHT (Cava et al. 2009, Cat. J/A+A/495/707), plus J and K imaging with WFC@UKIRT (Valentinuzzi et al. 2009, Cat. J/A+A/501/851) and some U-band imaging (Omizzolo et al. 2014, Cat. J/A+A/561/A111). This database is presented in Moretti et al. 2014A&A...564A.138M and has been employed for a number of studies (see https://sites.google.com/site/wingsomegawings/). OmegaCAM-VST observations of WINGS galaxy clusters (OMEGAWINGS) is a recent extention of this project, that quadruples the area covered (1deg2) and allows to reach up to ~2.5 cluster virial radii. OMEGAWINGS is based on two OmegaCAM@VST GTO programs for 46 WINGS clusters: a B and V campaign completed in P93, and an ongoing u-band programme. The B and V data, the data reduction and the photometric catalogs are presented in Gullieuszik et al. 2015 (Cat. J/A+A/581/A41). Spectra are obtained with AAOmega@AAT on the OmegaCAM field. So far, we have secured high quality spectra for ~30 OMEGAWINGS clusters, reaching very high spectroscopic completeness levels for galaxies brighter than V=20 from the cluster cores to their periphery (A. Moretti et al. 2016, in preparation). Galaxies are considered cluster members if they are within 3σ from the cluster redshift. The mean redshift uncertainty, computed from the differences between WINGS and OMEGAWINGS redshift values of repeated objects, is Δz=0.0002. For this

  1. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2008-04-01

    Jets stellaires; Structure géante et matière noire; Un mini-système solaire; Arcs gravitationnels et images multiples; Choc frontal dans notre Galaxie; Avalanches martiennes; Du sable autour de KH 15D; Le cratère de Carancas; Smart-1;

  2. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2015-01-01

    Alignements de quasars - La galaxie ESO 137-001 - Les mers de sable de Titan - Planck : matière noire et neutrinos fossiles - Quatre images d’une supernova - Les étoiles manquantes - NGC3226 - Vesta - Où est Philae ? - L’eau de 67P - Une spirale particulière - Météorite martienne

  3. 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)

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

    USDA-ARS?s Scientific Manuscript database

    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...

  5. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2002-12-01

    XMM à la recherche de la matière exotique; Ancienne étoile; Le Trou noir volant; Magnétar; Stardust et Annefrank; Le centre de la galaxie; Deux trous noirs dans la même galaxie; Eruption géante sur Io; Le Soleil;

  6. 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)

  7. 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…

  8. Zero kinetic energy spectroscopy: mass-analyzed threshold ionization spectra of chromium sandwich complexes with alkylbenzenes, (η(6)-RPh)(2)Cr (R = Me, Et, i-Pr, t-Bu).

    PubMed

    Ketkov, Sergey Y; Selzle, Heinrich L; Cloke, F Geoffrey N; Markin, Gennady V; Shevelev, Yury A; Domrachev, Georgy A; Schlag, Edward W

    2010-10-28

    For over 25 years zero kinetic energy (ZEKE) spectroscopy has yielded a rich foundation of high-resolution results of molecular ions. This was based on the discovery in the late 60's of long-lived ion states throughout the ionization continuum of molecular ions. Here, an example is chosen from another fundamental system pioneered at this university. The mass-analyzed threshold ionization (MATI) spectra of jet-cooled chromium bisarene complexes (η(6)-RPh)(2)Cr (R = Me (1), Et (2), i-Pr (3), and t-Bu (4)) have been measured and interpreted on the basis of DFT calculations. The MATI spectra of complexes 1 and 2 appear to reveal features arising from ionizations of the isomers formed by the rotation of one arene ring relative to the other. The 1 and 2 MATI spectra show two intense peaks corresponding to the 0(0)(0) ionizations with inverse intensity ratios. As indicated by the DFT calculations, the intensity ratio change on going from 1 to 2 results from different isomers contributing to each MATI peak. The ionization energies corresponding to the 0(0)(0) peaks are 42746 ± 5 and 42809 ± 5 cm(-1) for compound 1 and 42379 ± 5 and 42463 ± 5 cm(-1) for complex 2. The 1 and 2 spectra show also the weaker features representing transitions to the vibrationally excited cationic levels, the signals of individual rotamers being detected and assigned on the basis of calculated vibrational frequencies. The MATI spectra of compounds 3 and 4 reveal only one strong peak because of close ionization potentials of the isomers contributing to the MATI signal. The 3 and 4 ionization energies are 42104 ± 5 and 41917 ± 5 cm(-1), respectively. The precise values of ionization energies obtained from the MATI spectra reveal a nonlinear dependence of the IE on the number of Me groups in the alkyl substituents of (η(6)-RPh)(2)Cr. This can be explained by an increase in the molecular zero point energies on methylation of the substituents.

  9. 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

  10. VizieR Online Data Catalog: Astrometry of Pluto and trans-Neptunian objects (Holman+, 2016)

    NASA Astrophysics Data System (ADS)

    Holman, M. J.; Payne, M. J.

    2017-04-01

    We decided to build upon the carefully selected data of Buie & Folkner 2015 (Cat. J/AJ/149/22) for our analysis of Pluto. We use the Minor Planet Center (MPC) astrometry for Trans-Neptunian Objects (TNOs) only. For Pluto, we include the astrometry from the remeasured Lampland plates (Buie & Folkner 2015, Cat. J/AJ/149/22); that from a selection of photographic plates from Pulkovo Observatory that were also remeasured with modern stellar catalogs (Rylkov et al. 1995A&AT....6..265R); Pluto or Charon positions from recent occultation measurements of Pluto and Charon (Assafin et al. 2010, Cat. J/A+A/515/A32 ; Benedetti-Rossi et al. 2014, Cat. J/A+A/570/A86); and CCD observations from Pico dos Dias Observatory (Benedetti-Rossi et al. 2014, Cat. J/A+A/570/A86), the USNO's Flagstaff Station (Stone et al. 2003AJ....126.2060S), and JPL's Table Mountain Observatory (described in Buie & Folkner 2015, Cat. J/AJ/149/22). We adopt the uncertainties of Buie & Folkner 2015 (Cat. J/AJ/149/22) for the Pluto astrometry from Lowell and Pulkovo Observatory. However, we used significantly smaller astrometric uncertainties for the Pico do Dias data. We also used somewhat smaller astrometric uncertainties for the remaining data sets. For the USNO astrometry, we adopt 0.09'' for both R.A. and decl. For the Table Mountain Observatory astrometry, we adopt 0.07'' and 0.05'' for the R.A. and decl., respectively. For the occultation data we adopt 0.05'' and 0.03'' for the R.A. and decl., respectively. The astrometric uncertainties we adopted result in a {chi}2 per degree of freedom=1 for the unperturbed Pluto orbit fits. We included all TNOs, including Scattered-Disk Objects (SDOs), with semimajor axes a>~30au for which we could fit reliable orbits. For these objects, we adopt a fixed astrometric uncertainty of 0.27'', which results in {chi}2 per degree of freedom=1 for the ensemble of TNOs. We include a total of 6677 observations for Pluto, plus 35646 observations of other TNOs. (1 data file).

  11. Observation of Two La(C_3H_2) Isomers Formed by Dehydrogenation of Propyneobservation of Two La(C_3H_2) Isomers Formed by Dehydrogenation of Propyne

    NASA Astrophysics Data System (ADS)

    Hewage, Dilrukshi; Roudjane, Mourad; Yang, Dong-Sheng; Hewage, Dilrukshi; Roudjane, Mourad; Yang, Dong-Sheng

    2011-06-01

    C-H bond activation of small hydrocarbons is of importance in chemistry and industrial applications. La(C_3H_2) was formed by the reaction of laser-ablated La atoms and propyne (C_3H_4) in supersonic molecular beams. Two isomers of La(C_3H_2) were detected for the first time by mass-analyzed threshold ionization (MATI) spectroscopy. From the MATI spectra, the two isomers exhibit origin bands at 42953(5) and 43609(5) Cm-1 and vibrational intervals of 425 and 535 Cm-1, respectively. They were identified as La(CCCH_2) formed from 1,3-dehydrogantion and La(HCCCH) formed by 3,3-dehydrogenation and were confirmed by measurements with deuterium substituted propyne (C_3D_4) as the precursor. The 1,3-dehydrogenated complex shows a higher ionization energy and larger metal-ligand stretching frequencies than the 3,3-dehydrogenated species. Based on DFT/B3LYP calculations, the electronic transitions responsible for the observed MATI spectrum of La(HCCCH)isomer is ^1A ← ^2A,and that of La(CCCH_2)isomer is ^1A' ← ^2A'. C-H bond activation of small hydrocarbons is of importance in chemistry and industrial applications. La(C_3H_2) was formed by the reaction of laser-ablated La atoms and propyne (C_3H_4) in supersonic molecular beams. Two isomers of La(C_3H_2) were detected for the first time by mass-analyzed threshold ionization (MATI) spectroscopy. From the MATI spectra, the two isomers exhibit origin bands at 42959(5) and 43614(5) Cm-1 and vibrational intervals of 468/540 and 407/448 Cm-1, respectively. They were identified as La(CCCH_2) formed from 1,3-dehydrogantion and La(HCCCH) formed by 3,3-dehydrogenation and were confirmed by measurements with deuterium substituted propyne (C_3D_4) as the precursor. The 1,3-dehydrogenated complex shows a higher ionization energy and larger metal-ligand stretching frequencies than the 3,3-dehydrogenated species. The electronic transitions responsible for the observed MATI spectra of both isomers are ^1A ← ^2A and will be discussed

  12. VizieR Online Data Catalog: Blazars in the Swift-BAT hard X-ray sky (Maselli+, 2010)

    NASA Astrophysics Data System (ADS)

    Maselli, A.; Cusumano, G.; Massaro, E.; La Parola, V.; Segreto, A.; Sbarufatti, B.

    2010-06-01

    We reported the list of hard X-ray blazars obtained adopting sigma=3 as detection threshold: with this choice a number of three spurious sources over a total of 121 blazars is expected. Each blazar is identified by a three-letter code, where the first two are BZ for blazar and the third one specifies the type, followed by the truncated equatorial coordinates (J2000). The codes are defined in the "Note (1)" below. We obtained 69 FSRQs, 24 BL Lac objects and 28 blazars of uncertain classification, representing 4.4%, 2.4% and 11.0% of the corresponding populations classified in the BZCAT, respectively. This sample has been compared with other lists and catalogues found in literature (Tueller et al., 2010, Cat. J/ApJS/186/378, Ajello et al. 2009ApJ...699..603A, Cusumano et al., 2010, Cat. J/A+A/510/A48). (1 data file).

  13. VizieR Online Data Catalog: GJ 625 HARPS-N data (Suarez Mascareno+, 2017)

    NASA Astrophysics Data System (ADS)

    Suarez Mascareno, A.; Gonzalez Hernandez, J. I.; Rebolo, R.; Velasco, S.; Toledo-Padron, B.; Affer, L.; Perger, M.; Micela, G.; Rigas, I.; Maldonado, J.; Leto, G.; Zanmar Sanchez, R.; Scandariato, G.; Damasso, M.; Sozzetti, A.; Esposito, M.; Covino, E.; Maggio, A.; Lanza, A. F.; Desidera, S.; Rosich, A.; Bignamini, A.; Claudi, R.; Benatti, S.; Borsa, F.; Pedani, M.; Molinari, E.; Morales, J. C.; Herrero, E.; Lafarga, M.

    2017-06-01

    The star GJ 625 is part of the Bonfils et al. (2013, Cat. J/A+A/549/A109) sample and has been extensively monitored since mid-2004. We have used 140 HARPS-N spectra taken over 3 yr and more than 100 nights of EXORAP photometry. HARPS-N (Cosentino et al. 2012, in Ground-based and Airborne Instrumentation for Astronomy IV, SPIE,8446, 84461) is a fibre-fed high-resolution echelle spectrograph installed at the Telescopio Nazionale Galileo in the Roque de los Muchachos Observatory (Spain). Along with the HARPS-N spectra we have 2.6yr of B, V, R, and I-band photometric data collected at the INAF-Catania Astrophysical Observatory with an 80cm f/8 Ritchey-Chretien robotic telescope (APT2) located at Serra la Nave on the Mt. Etna . (5 data files).

  14. VizieR Online Data Catalog: K2-30 b and K2-34 b K2 light curves (Lillo-Box+, 2016)

    NASA Astrophysics Data System (ADS)

    Lillo-Box, J.; Demangeon, O.; Santerne, A.; Barros, S. C. C.; Barrado, D.; Hebrard, G.; Osborn, H. P.; Armstrong, D. J.; Almenara, J.-M.; Boisse, I.; Bouchy, F.; Brown, D. J. A.; Courcol, B.; Deleuil, M.; Delgado Mena, E.; Diaz, R. F.; Kirk, J.; Lam, K. W. F.; McCormac, J.; Pollacco, D.; Rajpurohit, A.; Rey, J.; Santos, N. C.; Sousa, S. G.; Tsantaki, M.; Wilson, P. A.

    2016-10-01

    The star K2-30 (EPIC210957318, 03:29:22.07 +22:17:57.9) was observed by K2 during its campaign 4, between February 7th and April 23rd, 2015. K2-34 (EPIC212110888, 08:30:18.91 +22:14:09.3) belongs to field-of-view 5, photometrically monitored by K2 between April 27th and July 10th, 2015. The data was reduced using both the Warwick (Armstrong et al. 2015A&A...579A..19A, Cat. J/A+A/579/A19) and the LAM- K2 (Barros et al., 2015MNRAS.454.4267B) pipelines. The detrended data (see Tables 1 and 2) show 1.9% and 0.8% dimmings every 4.099 and 2.996 days for K2-30 and K2-34, respectively (see Figs. 1 and 2). (2 data files).

  15. 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

  16. VizieR Online Data Catalog: HARPS timeseries data for HD41248 (Jenkins+, 2014)

    NASA Astrophysics Data System (ADS)

    Jenkins, J. S.; Tuomi, M.

    2017-05-01

    We modeled the HARPS radial velocities of HD 42148 by adopting the analysis techniques and the statistical model applied in Tuomi et al. (2014, arXiv:1405.2016). This model contains Keplerian signals, a linear trend, a moving average component with exponential smoothing, and linear correlations with activity indices, namely, BIS, FWHM, and chromospheric activity S index. We applied our statistical model outlined above to the full data set of radial velocities for HD 41248, combining the previously published data in Jenkins et al. (2013ApJ...771...41J) with the newly published data in Santos et al. (2014, J/A+A/566/A35), giving rise to a total time series of 223 HARPS (Mayor et al. 2003Msngr.114...20M) velocities. (1 data file).

  17. 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.

  18. VizieR Online Data Catalog: CALIFA galaxies observational hints (Ruiz-Lara+, 2017)

    NASA Astrophysics Data System (ADS)

    Ruiz-Lara, T.; Perez, I.; Florido, E.; Sanchez-Blazquez, P.; Mendez-Abreu, J.; Sanchez-Menguiano, L.; Sanchez, S. F.; Lyubenova, M.; Falcon-Barroso, J.; van de Ven, G.; Marino, R. A.; de Lorenzo-Caceres, A.; Catalan-Torrecilla, C.; Costantin, L.; Bland-Hawthorn, J.; Galbany, L.; Garcia-Benito, R.; Husemann, B.; Kehrig, C.; Marquez, I.; Mast, D.; Walcher, C. J.; Zibetti, S.; Ziegle, B.; Califa Team

    2017-05-01

    Characterisation of the sample of galaxies under analysis in the paper. The sample comprises 214 galaxies from the CALIFA survey. For each galaxy the name, equatorial coordinates, morphological type, presence of a bar, surface brightness profile type, inner disc scale length (kpc), outer disc scale length (kpc), and break radius in units of the inner disc scale length are given. Columns (1), (2), (3), and (4) from the CALIFA general sample characterisation (Walcher et al., 2014A&A...569A...1W). Columns (5), (6), (7), (8), (9), and (10) from the 2D decomposition performed in Mendez-Abreu et al. (2017, Cat. J/A+A/598/A32). (1 data file).

  19. 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).

  20. VizieR Online Data Catalog: NGC 6302 CO emission SHAPE model (Santander-Garcia+, 2017)

    NASA Astrophysics Data System (ADS)

    Santander-Garcia, M.; Bujarrabal, V.; Alcolea, J.; Castro-Carrizo, A.; Sanchez Contreras, C.; Quintana-Lacaci, G.; Corradi, R. L. M.; Neri, R.

    2016-08-01

    SHAPE model of the 12CO and 13CO J=3-2 emission o nebula NGC 6302, to be matched to ALMA observations as described in the paper. The file is intended to be loaded with SHAPE v5 (http://www.astrosen.unam.mx/shape/) and makes use of the SHAPEMOL plugin to achieve the radiative transfer in CO species (i.e. The CO data tables in http://www.astrosen.unam.mx/shape/v5/Downloads/SHAPE_INSTALLERS/index. html must be downloaded and pointed at within SHAPE). For additional details on how to work with SHAPE+SHAPEMOL, see Santander-Garcia et al. (2015, Cat. J/A+A/573/A56). (1 data file).

  1. VizieR Online Data Catalog: Tully-Fisher relation in disk galaxies from SPARC (Lelli+, 2016)

    NASA Astrophysics Data System (ADS)

    Lelli, F.; McGaugh, S. S.; Schombert, J. M.

    2017-02-01

    This work is based on the Spitzer Photometry and Accurate Rotation Curves (SPARC) data set, presented in detail in Lelli et al. 2016 (Cat. J/AJ/152/157). In short, we collected more than 200 high-quality HI rotation curves of disk galaxies from previous compilations, large surveys, and individual studies. Subsequently, we searched the Spitzer archive for 3.6μm images of these galaxies. We found 173 objects with useful [3.6] data. For the sake of this study, we exclude starburst dwarf galaxies (eight objects from Lelli et al. 2014, Cat. J/A+A/566/A71, and Holmberg II from Swaters et al. 2009A&A...493..871S) because they have complex HI kinematics and are likely involved in recent interactions (Lelli et al. 2014MNRAS.445.1694L). This reduces our starting sample to 164 objects. (1 data file).

  2. 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.

  3. VizieR Online Data Catalog: NGC 6121 turnoff and subgiant stars abundances (Spite+, 2016)

    NASA Astrophysics Data System (ADS)

    Spite, M.; Spite, F.; Gallagher, A. J.; Monaco, L.; Bonifacio, P.; Caffau, E.; Villanova, S.

    2016-08-01

    Observations were conducted at the Very Large Telescope (VLT) (Paranal, Chile) between April and July 2010 using the LR2 setting from 400 to 456nm with a resolving power R=6000, the HR12 setting from 583 to 614nm, and the HR15N setting from 666 to 679nm, both with a resolving power of about R=20000. The frames were processed using the FLAMES-GIRAFFE reduction pipeline. More information can be found in Monaco et al. (2012A&A...539A.157M, Cat. J/A+A/539/A157). The spectroscopic data are available through the Giraffe archive at Paris Observatory (http://giraffe-archive.obspm.fr/). (2 data files).

  4. 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).

  5. 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).

  6. VizieR Online Data Catalog: YSOs in LDN 1641 with Hectochelle spectra (Fang+, 2013)

    NASA Astrophysics Data System (ADS)

    Fang, M.; Kim, J. S.; van Boekel, R.; Sicilia-Aguilar, A.; Henning, T.; Flaherty, K.

    2013-08-01

    We combine newly obtained spectroscopic data from Hectospec and Hectochelle with photometric data from Paper I (Fang et al., 2009, Cat. J/A+A/504/461). The intermediate-resolution spectra of sources were taken with the Hectospec multi-object spectrograph in the range 3700-9000Å with a resolution of ~5Å. The observational data were taken on the nights of 2011 January 23, 24, and 25. The high-resolution Hα spectroscopy of sources was obtained with the Hectochelle multi-object spectrograph which can take a maximum of 240 spectra simultaneously with a spectral resolution of 34000. We used the OB 26 filter which simultaneously covers Hα emission line and the Li I(6708) absorption line. The observational data were taken on the night of 2010 February 5 with two pointings. (5 data files).

  7. VizieR Online Data Catalog: Hamburg/RASS Cat. of optical ident. V3.0 (Zickgraf+, 2003)

    NASA Astrophysics Data System (ADS)

    Zickgraf, F.-J.; Engels, D.; Hagen, H.-J.; Reimers, D.; Voges, W.

    2003-09-01

    This is the Version 3.0, issued May 6, 2003, 5341 X-ray sources from the ROSAT-BSC Version 2.0, issued January 5, 1998 now 4665 positions, (Bade et al., 1998, Cat. <J/A+AS/127/145>) Version 1.1, issued December 5, 1996 additional entries in the X-ray rows (flags and date of last change) Version 1.0, issued November 1, 1996 The catalogue can be used for scientific purposes if the above mentioned paper is referenced. For more detailed information about the identification code and the classification scheme for objective prism spectra the catalogue user is also referred to this paper. (2 data files).

  8. VizieR Online Data Catalog: LMC post-AGB, post-RGB star and YSOs (Kamath+, 2015)

    NASA Astrophysics Data System (ADS)

    Kamath, D.; Wood, P. R.; van Winckel, H.

    2015-06-01

    To obtain an initial sample selection for our spectroscopic survey, we adopted the sample selected by van Aarle et al. (2011A&A...530A..90V, Cat. J/A+A/530/A90), who identified optically visible post-AGB star candidates in the LMC based on photometry. We obtained low-resolution spectra of stars selected from the initial sample of objects. The spectra were taken using the AAOmega double-beam multi-fibre spectrograph mounted on the 3.9m Anglo Australian Telescope (AAT) at Siding Spring Observatory (SSO). AAOmega allows for the simultaneous observation of 392 targets (including science objects, sky-positions, and fiducial guide stars) over a 2 degree field using the 2dF fibre positioner. (11 data files).

  9. VizieR Online Data Catalog: Classification of 2XMM variable sources (Lo+, 2014)

    NASA Astrophysics Data System (ADS)

    Lo, K. K.; Farrell, S.; Murphy, T.; Gaensler, B. M.

    2017-06-01

    The 2XMMi-DR2 catalog (Cat. IX/40) consists of observations made with the XMM-Newton satellite between 2000 and 2008 and covers a sky area of about 420 deg2. The observations were made using the European Photon Imaging Camera (EPIC) that consists of three CCD cameras - pn, MOS1, and MOS2 - and covers the energy range from 0.2 keV to 12 keV. There are 221012 unique sources in 2XMM-DR2, of which 2267 were flagged as variable by the XMM processing pipeline (Watson et al. 2009, J/A+A/493/339). The variability test used by the pipeline is a {Chi}2 test against the null hypothesis that the source flux is constant, with the probability threshold set at 10-5. (1 data file).

  10. VizieR Online Data Catalog: Merging galaxies with tidal tails in COSMOS to z=1 (Wen+, 2016)

    NASA Astrophysics Data System (ADS)

    Wen, Z. Z.; Zheng, X. Z.

    2017-02-01

    Our study utilizes the public data and catalogs from multi-band deep surveys of the COSMOS field. The UltraVISTA survey (McCracken+ 2012, J/A+A/544/A156) provides ultra-deep near-IR imaging observations of this field in the Y,J,H, and Ks-band, as well as a narrow band (NB118). The HST/ACS I-band imaging data are publicly available, allowing us to measure morphologies in the rest-frame optical for galaxies at z<=1. The HST/ACS I-band images reach a 5σ depth of 27.2 magnitude for point sources. (1 data file).

  11. 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).

  12. 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).

  13. VizieR Online Data Catalog: GAPS V: Global analysis of the XO-2 system (Damasso+, 2015)

    NASA Astrophysics Data System (ADS)

    Damasso, M.; Biazzo, K.; Bonomo, A. S.; Desidera, S.; Lanza, A. F.; Nascimbeni, V.; Esposito, M.; Scandariato, G.; Sozzetti, A.; Cosentino, R.; Gratton, R.; Malavolta, L.; Rainer, M.; Gandolfi, D.; Poretti, E.; Zanmar Sanchez, R.; Ribas, I.; Santos, N.; Affer, L.; Andreuzzi, G.; Barbieri, M.; Bedin, L. R.; Benatti, S.; Bernagozzi, A.; Bertolini, E.; Bonavita, M.; Borsa, F.; Borsato, L.; Boschin, W.; Calcidese, P.; Carbognani, A.; Cenadelli, D.; Christille, J. M.; Claudi, R. U.; Covino, E.; Cunial, A.; Giacobbe, P.; Granata, V.; Harutyunyan, A.; Lattanzi, M. G.; Leto, G.; Libralato, M.; Lodato, G.; Lorenzi, V.; Mancini, L.; Martinez Fiorenzano, A. F.; Marzari, F.; Masiero, S.; Micela, G.; Molinari, E.; Molinaro, M.; Munari, U.; Murabito, S.; Pagano, I.; Pedani, M.; Piotto, G.; Rosenberg, A.; Silvotti, R.; Southworth, J.

    2015-01-01

    Photometric data of the two companion stars in the XO-2 binary system, and radial velocities of XO-2N used in our analysis. Transit light curves of XO-2N and related to its hot Jupiter XO-2Nb come from the TASTE project (Nasimbeni et al., 2011A&A...527A..85N, Cat. J/A+A/527/A85). Light curves of both XO-2N and XO-2S were collected by the APACHE survey (e.g. Sozzetti et al., Hot Planets and Cool Stars, EPJ Web of Conferences, Volume 47, id.03006, 2013) and were used in particular to determine the rotation period of the two binary components. Radial velocities of XO-2N were measured with the HARPS-N spectrograph at the Telescopio Nazionale Galileo (TNG), based at La Palma, Canary islands. (4 data files).

  14. Thin Film Optical Waveguides in 3-5 Semiconductors

    DTIC Science & Technology

    1975-01-01

    Waveguide 64 23 Attenuation Rate of the GaAs/n+GaAs Waveguides 66 24 Contour Map of 8 for Graded Refractive Index Waveguide 68 25 Attenuation...34 44 2.24x 10" New AsH3 and PH3 43 2.04 s 1014 New AsH3 49 5.30x 10" 68 1.47 x 10" New AsH3 79 l.lOx 10" 44 2.39 x 10" 23 jj-iaj»*.,^ -juJaa-tt«a...pM w thickness j_ 10 12 2 4 6 8 d(ym) Figure 24. Contour Map of f> for Graded Refractive Index Waveguide 68 .ii

  15. VizieR Online Data Catalog: COSMOS/UltraVISTA Ks-selected catalogs v4.1 (Muzzin+, 2013)

    NASA Astrophysics Data System (ADS)

    Muzzin, A.; Marchesini, D.; Stefanon, M.; Franx, M.; Milvang-Jensen, B.; Dunlop, J. S.; Fynbo, J. P. U.; Brammer, G.; Labbe, I.; van Dokkum, P.

    2016-07-01

    The current catalog release, v4.1 is a Ks-selected catalog of the COSMOS field based on the imaging from the DR1 UltraVISTA release (see McCracken+, 2012, J/A+A/544/A156). The catalog covers a total area of 1.62deg2, and has photometry in 30 bands including the GALEX, Subaru, CFHT, UltraVISTA, and Spitzer imaging. The 90% completeness limit of the survey is Ks,tot=23.4 AB. Photometry has been determined in a color aperture by PSF matching all bands, including additional source-fitting for the large-PSF space-based imaging such as GALEX and IRAC/MIPS. (6 data files).

  16. Defense Energy Support Center Fact Book: Providing Energy Solutions Worldwide

    DTIC Science & Technology

    2010-04-20

    JP-5 11,469 10,906 10,799 JP-8, JPTS 82,055 80,452 78,952 Lube Oils 25 24 25 Mobility Gasoline, Leaded & Unleaded (MOGAS) 1,863 1,955 1,963...Gasohol 51 41 96 JP-4, JAB, JAA & JA1 19,380 23,105 25,825 JP-5 13,625 12,121 13,615 JP-8, JPTS 68,239 62,469 57,616 Lube Oils 26 23 26...Contract Start Date Contract End Date Projected Savings Over Contract Period (NPV, $M) Fort.Jackson,.SC.(Retail) USA COCO Jun.99 2019 -.8* 29. Palms ,.CA

  17. VizieR Online Data Catalog: Infrared colors in HII region Sh2-173 (Cichowolski+, 2009)

    NASA Astrophysics Data System (ADS)

    Cichowolski, S.; Romero, G. A.; Ortega, M. E.; Cappa, C. E.; Vasquez, J.

    2009-10-01

    Radio continuum data at 408 and 1420MHz, as well as 21cm spectral line data, were obtained using the Dominion Radio Astrophysical Observatory (DRAO) interferometer as part of the Canadian Galactic Plane Survey (CGPS) (Taylor et al. 2003, Cat. ). Radio continuum surveys at 325MHz (WENSS) (Rengelink et al., 1997, Cat. <J/A+AS/124/259>), 2695MHz (Fuerst et al., 1990A&AS...85..691F) and 4850MHz (Condon et al., 1994AJ....107.1829C) were also used in this work. Mid-IR data were taken from the Midcourse Space Experiment (MSX) Galactic Plane Survey (Price et al., 2001AJ....121.2819P), and near-IR data were obtained from the 2MASS All-Sky Point Source Catalog (Skrutskie et al. 2006, Cat. ). (1 data file).

  18. VizieR Online Data Catalog: GJ 536 HARPS and HARPS-N data (Suarez Mascareno+, 2017)

    NASA Astrophysics Data System (ADS)

    Suarez Mascareno, A.; Gonzalez Hernandez, J. I.; Rebolo, R.; Astudillo-Defru, N.; Bonfils, X.; Bouchy, F.; Delfosse, X.; Forveille, T.; Lovis, C.; Mayor, M.; Murgas, F.; Pepe, F.; Santos, N. C.; Udry, S.; Wunsche, A.; Velasco, S.

    2016-11-01

    The star GJ 536 is part of the Bonfils et al. (2013, Cat. J/A+A/549/A109) sample and has been extensively monitored since mid-2004. We have used 146 HARPS spectra taken over 11.7 yr along with 12 HARPS-N spectra taken during April and May 2016. HARPS (Mayor et al., 2003Msngr.114...20M) and HARPS-N (Cosentino et al. 2012, in Ground-based and Airborne Instrumentation for Astronomy IV, SPIE, 8446, 84461) are two fibre-fed high-resolution echelle spectrographs installed at the 3.6m ESO telescope in La Silla Observatory (Chile) and at the Telescopio Nazionale Galileo in the Roque de los Muchachos Observatory (Spain), respectively. (1 data file).

  19. 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).

  20. 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.

  1. VizieR Online Data Catalog: Geneva stellar evolution tracks and isochrones (Lejeune+, 2001)

    NASA Astrophysics Data System (ADS)

    Lejeune, T.; Schaerer, D.

    2001-02-01

    This database was created from an updated version of the empirically and semi-empirically calibrated BaSeL library of synthetic stellar spectra of Lejeune et al. (1997, Cat. <J/A+AS/125/229>, 1998, Cat. <J/A+AS/130/65>) and Westera et al. (1999, ASP Conference Series 192, 203-206) to calculate synthetic photometry in the (UBV)J(RI)C JHKLL'M, HST-WFPC2, Geneva, and Washington systems for the entire set of non-rotating Geneva stellar evolution models covering masses from 0.4-0.8 to 120-150M⊙ and metallicities Z=0.0004 (1/50Z⊙) to 0.1 (5Z⊙). The results are provided in a database which includes all individual stellar tracks and the corresponding isochrones covering ages from 103yr to 16-20Gyr in time steps of Δlogt=0.05dex. The database also includes a new grid of stellar tracks of very metal-poor stars (Z=0.0004) from 0.8-150M⊙ calculated with the Geneva stellar evolution code. The complete stellar grids are tabulated in the files table1.dat (summary), evol.dat (evolutionary models), and in the files ubv.dat, hst.dat, gen.dat and cmt.dat (synthetic colors in the different photometric systems). These grids are also available as mod* files in subdirectories evol, ubv, hst, gen and cmt. The isochrones for the different photometric systems are summarized in the file table2.dat; the parameters of the isochrones are tabulated in the file iso.dat, the detailed isochrones being available as files iso* in the subdirectories ubv, hst, gen and cmt. (8 data files).

  2. 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).

  3. Fire Protection of Weapon Storage and Water Mist Redundancy Philosophies

    DTIC Science & Technology

    2012-11-01

    dans un espace moins bien aéré avec deux (2) fois moins d’eau. De plus, si le système est alimenté en eau à une pression moindre, par exemple la...deuxième objectif des mises à l’essai était d’étudier la pertinence des exigences en matière d’alimentation en eau pour protection incendie des...résistante ont été analysées. Le deuxième objectif des mises à l’essai était d’étudier la pertinence des exigences en matière d’alimentation en eau pour

  4. Photoelectron spectroscopy of molecular clusters

    NASA Astrophysics Data System (ADS)

    Zhang, Xu; Pitts, Jonathan; Zheng, Chaowen; Knee, Joseph L.

    1995-09-01

    High resolution photoelectron spectroscopy is applied to the study of molecular clusters. The primary species studied are fluorene-Arn complexes. Spectroscopy of the neutral S1 state has been performed on clusters as large as n equals 30. In order to study the photoelectron spectra of the clusters size selectively mass analyzed threshold ionization (MATI) is used which is a mass resolved version of the ZEKE technique. MATI spectroscopy has been applied to clusters up to n equals 5. The spectral shifts in the S1 origin and ion threshold are used as a measure of the relative stability of the different clusters. Using previous experimental and theoretical work on related clusters the structures of the clusters are inferred from the observed spectral shifts. In some cases multiple conformations of a particular cluster size are identified.

  5. Determination of precise pyrimidine cationic structure by vacuum ultraviolet mass-analyzed threshold ionization spectroscopy.

    PubMed

    Kim, Jae Han; Lee, Ji Hye; Hwang, Hyonseok; Kim, Hong Lae; Kwon, Chan Ho

    2014-01-28

    The vibrational spectrum of a pyrimidine cation in the ground electronic state was obtained using vacuum ultraviolet mass-analyzed threshold ionization (VUV-MATI) spectroscopy. Accurate ionization energy of pyrimidine was determined from the 0-0 band position in the VUV-MATI spectrum and was measured by varying the PFI field to the zero field limit, which is 75,258 ± 7 cm(-1) (9.3308 eV). The spectrum displayed a large number of vibrational peaks, which could be nearly completely assigned through Franck-Condon analysis performed with variations of geometrical parameters at the B3LYP/cc-pVTZ level. Based on the excellent agreement between experimental and calculated results, the definite geometry of the pyrimidine cation in the ground electronic state was determined to be a planar structure with C2v symmetry with a decreased N-N distance in the ring.

  6. Mass analyzed threshold ionization spectroscopy of 7-azaindole cation

    NASA Astrophysics Data System (ADS)

    Lee Lin, Jung; Tzeng, Wen Bih

    2003-10-01

    The vibrationally resolved mass analyzed threshold ionization (MATI) spectra of jet-cooled 7-azaindole have been recorded by ionizing via four different intermediate levels. The adiabatic ionization energy of this molecule is determined to be 65 462±5 cm -1, which is greater than that of indole by 2871 cm -1. The vibrational spectra of 7-azaindole in the S 1 and D 0 states have been successfully assigned by comparing the measured frequencies with those of indole as well as the predicted values from the ab initio calculations. Detailed analysis on the MATI spectra shows that the structure of the cation is somewhat different from that of this species in the neutral S 1 state.

  7. Mass-Analyzed Threshold Ionization of LaO2

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Zhang, Changhua; Krasnokutski, Sergiy; Yang, Dong-Sheng

    2010-06-01

    Lanthanum oxide, LaO2, is produced in a pulsed laser-vaporization metal-cluster source and studied by mass-analyzed threshold ionization (MATI) spectroscopy. From the MATI spectrum, the adiabatic ionization energy of LaO2 is determined to be 40134 (5) Cm-1 or 4.976 (6) eV, and La+-O stretching and O-La+-O bending frequencies are measured as 656 and 120 Cm-1. The measured ionization energy is about 3.0 eV lower than the value predicted by recent high-level ab initio calculations. In this talk, we will discuss the discrepancy between the experiment and theory and the electronic transition observed in our experiment. T. K. Todorova, I. Infante, L. Gagliardi, and J. M. Dyke, J. Phys. Chem. A 112, 7825 (2008).

  8. Observation of mass analyzed threshold ionization using synchrotron radiation on a new-style time of flight mass spectrometer

    NASA Astrophysics Data System (ADS)

    Zhang, Song; Wang, Yanmei; Cao, Zhenzhou; Zhang, Bing; Wang, Sisheng; Kong, Ruihong; Zhao, Yujie; Shan, Xiaobing; Sheng, Liusi

    2007-04-01

    We have developed an efficient and applicable apparatus that combines mass-analyzed threshold ionization (MATI) with continuous molecular-beam mass spectrometry using tunable vacuum ultraviolet synchrotron radiation at National Synchrotron Radiation Laboratory. The new design, in which the spoiling field and the pulsed ionization field are perpendicular to each other, can obtain efficiently the ionic spectra of molecule. The MATI spectra of Ar and N2 have been recorded in the energy region between 15.5 and 17.5eV to illustrate the feasibility of this scheme. With its unique features, the important experiment considerations are potentially a powerful tool for study of information of ionization energies and ionic states of complex organic compounds.

  9. One-color two-photon mass-analyzed threshold ionization spectroscopy of ethyl bromide through a dissociative intermediate state

    NASA Astrophysics Data System (ADS)

    Tang, Bifeng; Zhang, Song; Wang, Yanmei; Tang, Ying; Zhang, Bing

    2005-10-01

    Mass-analyzed threshold ionization (MATI) spectra of ethyl bromide were obtained using one-color two-photon ionization through a dissociative intermediate state. Accurate values for the adiabatic ionization energy have been obtained, 83099±5 and 85454±5cm-1 for the X˜1E2 and X˜2E2 states of the ethyl bromide cation, respectively, giving a splitting of 2355±10cm-1. Compared with conventional photoelectron data, the two-photon MATI spectrum exhibited a more extensive vibrational structure with a higher resolution, mainly containing the modes involving the dissociation coordinate. The observed modes were analyzed and discussed in terms of wave packet evolving on the potential-energy surface of the dissociative state.

  10. Mass-analyzed Threshold Ionization Spectroscopy of Rotamers of p-ethoxyphenol Cations and Configuration Effect

    NASA Astrophysics Data System (ADS)

    Zheng, Qiu-sha; Fang, Teng I.; Zhang, Bing; Bih Tzeng, Wen

    2009-12-01

    Two-color resonant two-photon mass-analyzed threshold ionization (MATI) spectroscopy was used to record the vibrationally resolved cation spectra of the selected rotamers of p-ethoxyphenol. The adiabatic ionization energies of the trans and cis rotamers are determined to be 61565 ± 5 and 61670 ± 5 cm-1, which are less than that of p-methoxyphenol by 645 and 643 cm-1, respectively. Analysis on the MATI spectra of the selected rotamers of p-ethoxyphenol cation shows that the relative orientation of the ethoxy group has little effect on the in-plane ring vibrations. The low-frequency OC2H5 bending vibrations appear to be active for both forms of the cation.

  11. Photodissociation yield spectroscopy of vinyl bromide cation generated by mass-analyzed threshold ionization: Vibrational spectroscopy and decay dynamics in the B ˜ state

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Myung Soo

    2007-04-01

    A new technique [mass-analyzed threshold ionization (MATI)-photodissociation yield spectroscopy] to probe bound excited states of a cation was developed, which measures photodissociation yield of the cation generated by mass-analyzed threshold ionization. A vibrational spectrum of vinyl bromide cation in the B ˜ state was obtained using this technique. Optical resolution in the low vibrational energy range of the spectrum was far better than in conventional MATI spectra. The origin of the B ˜ state was found at 2.2578±0.0003eV above the first ionization onset. Almost complete vibrational assignment was possible for peaks appearing in the spectrum. Analysis of time-of-flight profiles of C2H3+ product ion obtained with different laser polarization angles suggested that photoexcited vinyl bromide cation remained in the B ˜ state for several hundred picoseconds prior to internal conversion to the ground state and dissociation therein.

  12. Mass-analyzed threshold ionization spectroscopy of 1-bromopropane through dissociative intermediate states

    NASA Astrophysics Data System (ADS)

    Zhang, Song; Wang, Yanmei; Tang, Bifeng; Zheng, Qiusha; Zhang, Bing

    2006-02-01

    One-color two-photon ionization of 1-bromopropane, resulting in the 1-C 3H 7Br + ions in the X2E and X2E electronic states, is investigated using mass-analyzed threshold ionization (MATI) spectroscopy. The adiabatic ionization energies of two spin states are found to be 82 257 ± 5 and 84 823 ± 5 cm -1, respectively. The two-photon MATI spectrum exhibits an extensive vibrational structure. The active modes, including the C-Br stretching, the CH 2-Br wagging, the CH 2 and the CH 3 rocking modes, are observed and reliable values for these vibrational frequencies are obtained. We have also performed ab initio and density functional calculations, which provide interpretation for our experimental finding.

  13. Ionization energy and active cation vibrations of trans-2-fluorostyrene

    NASA Astrophysics Data System (ADS)

    Wu, Pei Ying; Tzeng, Sheng Yuan; Hsu, Ya Chu; Tzeng, Wen Bih

    2017-02-01

    We applied the two-color resonant two-photon mass-analyzed threshold ionization (MATI) technique to record the cation spectra of trans-2-fluorostyrene by ionizing via six intermediate vibronic levels. The adiabatic ionization energy was determined to be 69 304 ± 5 cm-1. The distinct MATI bands at 67, 124, 242, 355, 737, 806, 833, and 993 cm-1 were assigned to the active cation vibrations related to out-of-plane substituent-sensitive bending vibrations and in-plane ring deformation and bending motions. Many combination vibrations were also observed. Our experimental results suggest that the molecular geometry and vibrational coordinates of the trans-2-fluorostyrene cation in the D0 state resemble those of the neutral species in the S1 state.

  14. The effect of conformation on the ionization energetics of n-butylbenzene. I. A threshold ionization study

    NASA Astrophysics Data System (ADS)

    Tong, Xin; Ford, Mark S.; Dessent, Caroline E. H.; Müller-Dethlefs, Klaus

    2003-12-01

    Conformational isomers of the aromatic hydrocarbon n-butylbenzene have been studied using two-color REMPI (resonance enhanced multiphoton ionization) and MATI (mass analyzed threshold ionization) spectroscopy to explore the effect of conformation on ionization dynamics. Gauche- and anti-cationic conformers were selectively produced by two-color excitation via the respective S1 origins. Adiabatic ionization potentials of the gauche- and anti-conformations were determined to be 70 148 and 69 955±5 cm-1, respectively. Analysis of the REMPI and MATI spectra allowed the determination of the S0 (38 cm-1), S1 (100 cm-1), and D0 (-155 cm-1) gauche- and anti-conformer energy differences. 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 discussed.

  15. Directory of Aircraft Survivability Specialists and Their Affiliations

    DTIC Science & Technology

    1980-12-01

    39 Army Mobility Equipment R & D Command ............................. 40 Army Research & Technology Laboratory NASA Ames Research...Dr. George R. AV 955-3349 Composites, plastics, DRXMR-R (617) 923-3349 adhesive elastomeric mati ARMY MOBILITY EOUIPMENT R and D Command Ft. Belvoir...System, DRDME-RT Dept 662 Army Mobility Equipment Grumman Aerospace Corporation R and D Command South Oyster Bay Road Ft. Belvoir, VA 22060 Bethpage

  16. Exploring the Structure of Nitrogen-Rich Ionic Liquids and Their Binding to the Surface of Oxide-Free Boron Nanoparticles

    DTIC Science & Technology

    2013-01-29

    liquid (IL) capping layer. I. INTRODUCTION Hydrazine and its derivatives are widely employed as propellants in rocket engines for spacecraft station...keeping, orbit maneuvering, and orientation control applications. A typical bipropellant rocket engine might use a hydrazine compound as fuel and nitrogen...from C.R. Supply Co. (West Hills, CA) was used as starting material in the milling process. The [MAT][DCA] and [MAT]I ILs used were synthesized at the

  17. 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).

  18. Biocompatible, Biodegradable Polymers for Use in Bone Repair,

    DTIC Science & Technology

    1987-01-01

    acid (PLA) (also referred to as poly( lactide )) is soluble in common organic solvents because steric hindrance does not allow the chains to pack as...experiment, Hollinger added a protein- acidic phospholipid (diphosphoinositie-ivsozyme) to 50:50 polv (D,L- lactide co-glycolide). 9 5 rhis composite was...chemical degradation.9 The biodegradable polyesters have a 25 year history of Hollinger Ibav Mark page b satetv as sutuit mat.i ial. PolvgIvcoiic acid

  19. Building GIS on Top of the Open DBMS ’Postgres’ (Het Bouwen van een GIS op Basis van het Open DBMS ’Postgres’)

    DTIC Science & Technology

    1991-08-01

    solution based on the extendable database management system Postgres, in which thematic and spatial data are stored together. The contents of this report...EXTENDABLE DATABASE MANAGEMENT SYSTEM "POSTGRES. IN WHICH THEMATIC AND SPATIAL DATA ARE STORED TOGETHER. THE CONTENTS OF THIS REPORT WAS PRESENTED AT THE...hebben en duale architectwr: de themnatisdie informatie is opgeslagen in een relationeel database management systeem en de ruimtekike infor- matie is

  20. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2006-03-01

    Des Troyens de glace; Plus grande que Pluton; Deux méga-systèmes solaires; C'est parti; Un accélérateur de particules au centre de notre Galaxie; Surprenant champ magnétique d'une naine rouge; Fuyards; Décimation de l'amas globulaire M12; Silicates et galaxies lointaines; Matière noire; GRB060218; L'autre plan d'Andromède

  1. Laser Production of Soft X-Rays by Multiquantum Processes and the Excitation of Atomic Inner-Shell States

    DTIC Science & Technology

    1989-07-06

    34Interaction des Electrons avec un Champ Intense de Rayonnement Optique ," In Polarisation, Mati~re et Rayonnement, 6dit4 par La Societe Franpaise de Physique...reflecting microscope objective (Ealing 25-0506) onto either a CCD camera or a linear photodiode array (Reticon 512G), the latter having a 25 Pm square...pixel size. The beam profile at the image plane of the microscope objective is shown in Fig. (2). An understanding of two important instrumental

  2. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2005-03-01

    Trou noir glouton, Matière noire, Integral et le centre de notre Galaxie, Essaim de trous noirs, Carrousel autour de trous noirs, Érosion de trous noirs, Un quasar dans NGC 7319?, Distance de T Tauri, Chai non manquant, Des planètes autour d'une naine brune?, Titan, Une quatrième planète pour le pulsar PSR B1257+12, Smart 1, Aurores de Saturne

  3. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2002-06-01

    Loi tchèque sur la pollution lumineuse; XTE J0929-314; Futurs amas de galaxies; Palomar 5; La météo des naines brunes; Trous noirs et galaxies elliptiques; Europe; 2MASS; Mars; Io; Matière sombre; Un objet très froid; Les oscillations stellaires; Un système lanétaire en formation; Binaire serrée; Satellites de Jupiter; Mars sous la loupe; Le Hubble nouveau

  4. A Triservice Comparison of Dental Scaling Devices: Sonic and Ultrasonic

    DTIC Science & Technology

    1989-05-01

    USAFSAM-TR-89-4 AD- A2 10 413 A TRISERVICE COMPARISON OF DENTAL SCALING DEVICES: SONIC AND ULTRASONIC Joe B. Drane III, Lieutenant Colonel, USAF, DC...TX 78235-5301 \\ NOTICES This final report was submitted by personnel of the Dental Investigation Service, Clinical Sciences Division, USAF School cf...Classification) A Triservice Compariscn of Dental Scaling Devices: Sonic and Ultrasonic 12. PERSONAL AUTHOR(S) Drane, Joe B. III; Matis, Bruce A.; Sexson

  5. Hypersonic-Flow Governing Equations with Electromagnetic Files

    DTIC Science & Technology

    2009-09-01

    Amsterdam, 1950. [5] P. Mazur, I. Prigogine, Contribution à la thermodynamique de la matière dans un champ électromagnétique, Memoires de l’Academie...Ferrohydrodynamics, Dover Publications, New York NY, 1997, first published in 1985 by Cambridge University Press. [39] L. Napolitano, Thermodynamique ...Sons, New York NY, 1985. [69] I. Prigogine, Introduction à la Thermodynamique des Processus Irréversibles, Éditions Jacques Gabay, Paris, 1996. [70

  6. Assessment of Copper Pollution in Overbank Sediments by In-situ Measurements Using a Field Portable EDXRF Instrument

    NASA Astrophysics Data System (ADS)

    Civici, Nikolla; Tashko, Artan

    2007-04-01

    The application of a field portable EDXRF instrument for the assessment of Mati River overbank sediments pollution is presented. The portable EDXRF spectrometer is based on a Peltier-cooled Si-PIN X-ray detector and a 740 MBq Cd-109 disc radioactive source. The comparison of the laboratory results with the average results of replicate in-situ measurements showed a rather good agreement. This allowed us to assess the pollution level and localize the contaminated `hot spots'.

  7. 3-D Soviet Style: A Presentation on Lessons Learned from the Soviet Experience in Afghanistan

    DTIC Science & Technology

    2007-10-01

    veut une analyse des efforts soviétiques en matière de défense, de développement et de diplomatie au cours du conflit russo-afghan (1979 à 1989). Les...publiée en russe et en anglais . Les données statistiques sur le conflit ont également été prises en compte. Les auteurs, MM. Anton Minkov et

  8. All Hazards Risk Assessment Transition Project: Report on Capability Assessment Management System (CAMS) Automation

    DTIC Science & Technology

    2014-04-01

    utilisés pour rassembler les exigences nécessaires à la mise au point du système de gestion de l’évaluation des capacités (Capability Assessment...comparaison et l’analyse des écarts et des exigences en matière de capacité à l’échelle du spectre de la gestion des urgences. 1 2 Table of...30 7.1.1.4 User Access Controls

  9. Neutral and cation spectroscopy of fluorene-Arn clusters

    NASA Astrophysics Data System (ADS)

    Zhang, Xu; Pitts, Jonathan D.; Nadarajah, Ravindrakumar; Knee, J. L.

    1997-11-01

    Fluorene-Arn complexes formed in a pulsed supersonic jet have been studied in their S1 state using two color REMPI spectroscopy with mass resolved detection. The appearance and shifts of the S1 origins relative to the fluorene monomer are measured for cluster sizes up to n = 30. The shifts and appearance of these bands are used to identify multiple conformations at low n and have indicated a shift from two sided clustering by Ar at low n to primarily one sided clustering at large n. The ionic ground state of the smaller clusters (n⩽6) are studied using mass analyzed threshold ionization (MATI) spectroscopy. The change of the ionization potentials as a function of cluster size has been determined. In the case of the fluorene-Ar4 cluster, the MATI spectrum of two separate cluster conformations was measured, revealing significantly different ionization potentials. Vibrational dynamics has been studied in several smaller clusters (n⩽3) by measuring MATI and ZEKE spectra when pumping vibronic transitions in the fluorene chromophore. Significantly enhanced coupling of the chromophore to van der Waals modes is observed in going from n = 1 to n = 3.

  10. Rotational state selection of a CH3I+ ion beam using vacuum ultraviolet-mass-analyzed threshold ionization spectroscopy: Characterization using photodissociation spectroscopy

    NASA Astrophysics Data System (ADS)

    Bae, Yong Jin; Kim, Myung Soo

    2008-03-01

    The ÃA12←X˜E3/22 transition of CH3I + was investigated by photodissociation (PD) of the cation generated by one-photon mass-analyzed threshold ionization (MATI). Compared to the PD spectrum obtained by excitation of the cation in the main 0-0 band in the MATI spectrum, those obtained by excitation of the cations in the satellite structures showed substantially simplified rotational structures for nondegenerate vibronic bands. Spectral simplification occurred because each satellite consisted mostly of cations with one K quantum number. Spectroscopic constants in the ground vibronic state and in the 2135, 2138, 39, and 313 nondegenerate vibrational states in ÃA12 were determined via spectral fitting. Also, those in the 213n61 (n=1?) degenerate state, which had been reported previously, was improved. The K quantum number in each satellite determined by the present high resolution study was compatible with the prediction by the symmetry selection rule for photoionization. That is, the K quantum number of the ion core in high Rydberg states accessed by one-photon excitation was found to be conserved upon pulsed field ionization. This work demonstrates generation of mass-selected, vibronically selected, and K-selected ion beam by one-photon MATI.

  11. Vibrations and theoretical calculations of p-methylanisole in the first electronically excited S 1 and ionic ground D 0 states

    NASA Astrophysics Data System (ADS)

    Huang, Jiangou; Tzeng, Wenbih

    2007-07-01

    One-color (1C), two-color (2C) resonant two-photon ionization (R2PI), and mass analyzed threshold ionization (MATI) methods have been applied to study the S 1 ← S 0 transition and threshold ionization of p-methylanisole. The excitation energy of the S 1 ← S 0 transition is determined to be 35,401 ± 2 cm -1, the adiabatic ionization energy of this molecule is measured to be 63,965 ± 15 and 63,972 ± 5 cm -1 by the 2C-R2PI and MATI methods. Most of the observed R2PI and MATI bands result from the in-plane ring vibrations. The frequencies of vibrations 9b, 1 and 7a are measured to be 393, 800 and 1168 cm -1 in the S 1 state, and 412, 811 and 1220 cm -1 in the D 0 state, respectively. This indicates the molecular structure in the D 0 state is more rigid than that in the S 1 state.

  12. Rotamers of m-chloroanisole studied by two-color resonant two-photon mass-analyzed threshold ionization spectroscopy

    NASA Astrophysics Data System (ADS)

    Huang, Hsin Chang; Shiung, Kui Shiu; Jin, Bih Yaw; Tzeng, Wen Bih

    2013-11-01

    We apply the resonant two-photon ionization (R2PI) and mass-analyzed threshold ionization (MATI) techniques to record the vibronic and cation spectra of m-chloroanisole. The vibronic features appear in two series, built on 35,822 ± 2 and 35,868 ± 2 cm-1, corresponding to the origins of the S1 ← S0 electronic transition (E1's) of the two rotamers. Analysis of the MATI spectra gives the adiabatic ionization energies (IEs) of 67,645 ± 5 and 68,008 ± 5 cm-1 for these two isomeric species. Comparing these data with those of anisole, we find that the chlorine substitution at the meta position leads to a red shift in the E1 and a blue shift in the IE. The observed R2PI and MATI bands mainly result from the in-plane ring deformation and substituent-sensitive bending vibrations of these species in the electronically excited S1 and cationic ground D0 states.

  13. 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.

  14. 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

  15. 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.

  16. 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.

  17. Core formation conditons in planetesimals: constraints from isotope fractionation experiments.

    NASA Astrophysics Data System (ADS)

    Guignard, J.; Quitté, G.; Toplis, M. J.; Poitrasson, F.

    2016-12-01

    F., JAAS, 21, 1249-1255 (2006) [3] Breton T., and Quitté G., JAAS, 29, 2284-2293 (2014) [4] Roskosz M., et al., EPSL, 248, 851-867 (2006)

  18. VizieR Online Data Catalog: Catalog of 316 K giant candidates (Rebull+, 2015)

    NASA Astrophysics Data System (ADS)

    Rebull, L. M.; Carlberg, J. K.; Gibbs, J. C.; Deeb, J. E.; Larsen, E.; Black, D. V.; Altepeter, S.; Bucksbee, E.; Cashen, S.; Clarke, M.; Datta, A.; Hodgson, E.; Lince, M.

    2015-11-01

    There are 82 targets published in de la Reza et al. (1997ApJ...482L..77D). There are 86 K giants reported in Carlberg et al. 2012 (cat. J/ApJ/757/109). We compiled 149 additional targets that have been identified either consistently or at one time as confirmed or possible Li-rich K giants, but not included in either the de la Reza et al. (1997ApJ...482L..77D) or the Carlberg et al. 2012 (cat. J/ApJ/757/109) samples. They include targets from Adamow et al. 2014 (cat. J/A+A/569/A55), Anthony-Twarog et al. (2013ApJ...767L..19A), Carney et al. (1998AJ....116.2984C), Carlberg et al. (2015ApJ...802....7C), Castilho et al. 2000 (cat. J/A+A/364/674), Drake et al. (2002AJ....123.2703D), Fekel & Watson (1998AJ....116.2466F), Hill & Pasquini (1999A&A...348L..21H), Jasniewicz et al. (1999A&A...342..831J), Kirby et al. (2012ApJ...752L..16K), Kraft et al. (1999ApJ...518L..53K), Kumar et al. (2011ApJ...730L..12K) and references therein, Liu et al. (2014ApJ...785...94L), Luck & Heiter 2007 (cat. J/AJ/133/2464), Martell & Shetrone (2013MNRAS.430..611M), Monaco et al. (2014A&A...564L...6M), Pilachowski et al. (2003AJ....125..794P), Ruchti et al. (2011ApJ...743..107R), Silva Aguirre et al. (2014ApJ...784L..16A), Smith et al. (1999ApJ...516L..73S), and Torres et al. (2000IAUS..198..320T). Our complete list of 316 targets with position, photometric, and abundance data appears in Table1. We obtained positions for these targets, most of which are quite bright in the optical, primarily from SIMBAD, though literature was consulted for fainter sources as required. Detailed notes on the sources we suspect are subject to source confusion appear in Table4. Table6 contains notes on the entire set of sources. (3 data files).

  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: JMMC Stellar Diameters Catalogue - JSDC. Version 2 (Bourges+, 2017)

    NASA Astrophysics Data System (ADS)

    Bourges, L.; Mella, G.; Lafrasse, S.; Duvert, G.; Chelli, A.; Le Bouquin, J.-B.; Delfosse, X.; Chesneau, O.

    2017-01-01

    The JMMC (Jean-Marie Mariotti Center) Calibrator Workgroup has long developed methods to estimate the angular diameter of stars, and provides this expertise in the SearchCal tool (http://www.jmmc.fr/searchcal). SearchCal creates a dynamical catalogue of stars suitable to calibrate Optical Long-Baseline Interferometry (OLBI) observations from on-line queries of CDS catalogues, according to observational parameters. In essence, SearchCal is limited only by the completeness of the stellar catalogues it uses, and in particular is not limited in magnitude. SearchCal being an application centered on the somewhat restricted OLBI observational purposes, it appeared useful to make our angular diameter estimates available for other purposes through a CDS-based catalog, the JMMC Stellar Diameters Catalogue (JSDC, II/300). This second version of the catalog represents a tenfold improvement both in terms of the number of objects and on the precision of the estimates. This is due to a new algorithm using reddening-free quantities -- the pseudomagnitudes, allied to a new database of all the measured stellar angular diameters -- the JMDC (II/345/jmdc), and a rigorous error propagation at all steps of the processing. All this is described in the associated publication by Chelli et al. (2016A&A...589A.112C). The catalog reports the Limb-Darkened Diameter (LDD) and error for 465877 stars, as well as their BVRIJHKLMN magnitudes, Uniform Disk Diameters (UDD) in these same photometric bands, Spectral Type, and two supplementary quality indicators: - the mean-diameter chi-square (see Appendix A.2 of Chelli et al., 2016A&A...589A.112C). - a flag indicating some degree of caution in choosing this star as an OLBI calibrator: known spectroscopic binaries, Algol type stars, etc, see Note (1). The conversion from LDD to UDD in each spectral band is made using mainly the coefficients from J/A+A/556/A86/table16 and J/A+A/554/A98/table16 when possible (compatible spectral types) and following the

  1. 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).

  2. Suitability of two commercial preparations for disinfections against methicillin-resistant Staphylococcus aureus in veterinary medicine.

    PubMed

    Yilmaz, Ayhan; Kaleta, Erhard Franz

    2009-05-01

    Two commercially available preparations from the disinfectants list of the German Veterinary Association (Deutsche Veterinärmedizinische Gesellschaft e. V. (DVG)) were tested against a methicillin-resistant Staphylococcus aureus (MRSA) field isolate in a concentration as recommended in the list for disinfection of bacteria. The "Guidelines of DVG for testing of disinfection methods and chemical disinfectants" were used as methodical base. Initially, the examinations for determination of the minimal inhibitory concentrations (MIC) and suitable inactivation substances were carried out. The bactericidal effect of both commercial preparations--a formic acid preparation (55 g per 100 g) and a preparation containing 21 g glutaraldhyde plus 17 g per 100 g formaldehyde--as well as reference disinfectants (37% formaldehyde and 99.5% phenol) were examined in suspension and carrier tests. The suspension tests were performed without and with protein load (20% FBS). Pieces of linden wood were used as carriers. The recommendation of DVG for both Venno Vet 1 super and M&enno Veterinär B neu as bactericide (except of bacterial spores) is 30 min (for preventive disinfections) as well as 120 min contact (for specific disinfections) of 1% concentration. The results show that the disinfection of MRSA do not require higher concentrations and longer contact times as recommended in the disinfectant list of DVG for both commercial disinfectants. Both products were effective in suspension tests in a 1% concentration and within five minutes independent of protein load. In contrast, 1% phenol (reference disinfectant for suspension tests) needed 30 min reaction time without protein load as well as 60 min with protein load for complete inactivation of the MRSA field strain. In carrier tests, a 30 min contact of 1% concentration of both commercial disinfectants and 3% concentration of formalin (reference disinfectant for carrier tests) was sufficient for complete disinfection.

  3. 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.

  4. 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.

  5. Preparing transition-metal clusters in known structural forms: The mass-analyzed threshold ionization spectrum of V3

    NASA Astrophysics Data System (ADS)

    Ford, Mark S.; Mackenzie, Stuart R.

    2005-08-01

    The first results are presented of a new experiment designed both to generate and characterize spectroscopically individual isomers of transition-metal cluster cations. As a proof of concept the one-photon mass-analyzed threshold ionization (MATI) spectrum of V3 has been recorded in the region of 44000-45000cm-1. This study extends the range of a previous zero-kinetic-energy (ZEKE) photoelectron study of Yang et al. [Chem. Phys. Lett. 231, 177 (1994)] with which the current results are compared. The MATI spectra reported here exhibit surprisingly high resolution (0.2cm-1) for this technique despite the use of large discrimination and extraction fields. Analysis of the rotational profile of the origin band allows assignment of the V3 ground state as A1'2 and the V3+ ground state as A2'3, both with D3h geometry, in agreement with the density-functional theory study of the V3 ZEKE spectrum by Calaminici et al. [J. Chem. Phys. 114, 4036 (2001)]. There is also some evidence in the spectrum of transitions to the low-lying A1'1 excited state of the ion. The vibrational structure observed in the MATI spectrum is, however, significantly different to and less extensive than that predicted in the density-functional theory study. Possible reasons for the discrepancies are discussed and an alternative assignment is proposed which results in revised values for the vibrational wave numbers of both the neutral and ionic states. These studies demonstrate the efficient generation of cluster ions in known structural (isomeric) forms and pave the way for the study of cluster reactivity as a function of geometrical structure.

  6. Mass-Analyzed Threshold Ionization of M_2O_2 ( M = ce and Pr)

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Dangi, Beni; Rounjane, Mourad; Yang, Dong-Sheng

    2012-06-01

    M_2O_2 ( M = Ce and Pr) is produced in a pulsed laser-vaporization metal-cluster source and studied by mass-analyzed threshold ionization (MATI) spectroscopy. From the MATI spectra, the adiabatic ionization energy is determined to be 37300(5) cm-1 for Ce2O2, and 37885 (5) cm-1 for Pr2O2. Like group 3 transition metal M2O2 (M=Sc, Y, and La) clusters we reported previously, these lanthanide clusters have a D2h planer structure and the vibrational modes observed are from the in-plane motions. However, the ground and other low-energy electronic states of the lanthanide oxides have a much higher electron spin multiplicity due to the existence of 4f electrons in the Ce and Pr atoms. The 4f electron of Ce atom has significantly lower energies than the 5d or 6s electrons and remain uncoupled in Ce2O2. On the other hand, the energy differences between the 4f and 5d/6s electrons of Pr atom are relatively small, and a 4f → 5d electron promotion is required in the formation of Pr2O2. The electronic transitions responsible for the observed MATI spectra are tentatively determined to be ^4B1u ← ^5Ag for Ce2O2 and ^6B1u ← ^7B2g and ^6B1u ← ^5B1u for Pr2O2.

  7. 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.

  8. Advanced Authoring Technologies, Capabilities and Opportunities (Technologies avancees d’authoring, possibilites et opportunites)

    DTIC Science & Technology

    2011-02-01

    en matière d’ « authoring », de conception, de développement, et de maintenance des environnements pédagogiques informatisés, de façon rapide...des caractéristiques fonctionnelles d’un environnement d’étude de telle façon que des systèmes informatisés puissent l’interpréter correctement et...measurements and its own internal mathematical model of the circuit. SOPHIE could thereby determine which hypotheses the student or problem solver was

  9. Pleiotropic effects of methionine adenosyltransferases deregulation as determinants of liver cancer progression and prognosis.

    PubMed

    Frau, Maddalena; Feo, Francesco; Pascale, Rosa M

    2013-10-01

    Downregulation of liver-specific MAT1A gene, encoding S-adenosylmethionine (SAM) synthesizing isozymes MATI/III, and upregulation of widely expressed MAT2A, encoding MATII isozyme, known as MAT1A:MAT2A switch, occurs in hepatocellular carcinoma (HCC). Being inhibited by its reaction product, MATII isoform upregulation cannot compensate for MATI/III decrease. Therefore, MAT1A:MAT2A switch contributes to decrease in SAM level in rodent and human hepatocarcinogenesis. SAM administration to carcinogen-treated rats prevents hepatocarcinogenesis, whereas MAT1A-KO mice, characterized by chronic SAM deficiency, exhibit macrovesicular steatosis, mononuclear cell infiltration in periportal areas, and HCC development. This review focuses upon the pleiotropic changes, induced by MAT1A/MAT2A switch, associated with HCC development. Epigenetic control of MATs expression occurs at transcriptional and post-transcriptional levels. In HCC cells, MAT1A/MAT2A switch is associated with global DNA hypomethylation, decrease in DNA repair, genomic instability, and signaling deregulation including c-MYC overexpression, rise in polyamine synthesis, upregulation of RAS/ERK, IKK/NF-kB, PI3K/AKT, and LKB1/AMPK axis. Furthermore, decrease in MAT1A expression and SAM levels results in increased HCC cell proliferation, cell survival, and microvascularization. All of these changes are reversed by SAM treatment in vivo or forced MAT1A overexpression or MAT2A inhibition in cultured HCC cells. In human HCC, MAT1A:MAT2A and MATI/III:MATII ratios correlate negatively with cell proliferation and genomic instability, and positively with apoptosis and global DNA methylation. This suggests that SAM decrease and MATs deregulation represent potential therapeutic targets for HCC. Finally, MATI/III:MATII ratio strongly predicts patients' survival length suggesting that MAT1A:MAT2A expression ratio is a putative prognostic marker for human HCC. Copyright © 2013 European Association for the Study of the Liver

  10. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2002-09-01

    Jeunes étoiles et vieilles galaxies; Chiens de Chasse; Des images en partie belges; Détection chimique de planètes?; Amas cannibale; Le pulsar œil de bœuf; Supernova 2002 DJ; Centaurus A; Et de cent; Près du trou noir; Un cratère sous la Merdu Nord; Des astéroï des frôlent la Terre; Photons fatigués; Taches solaires; Un grand lac martien; Les naines brunes en infrarouge; Bourrelet équatorial; Fusion de trous noirs; Le hamburger de Gomez; Matière sombre; Non aux étoiles à quarks

  11. 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

  12. Conceiving an Army for the 21st Century

    DTIC Science & Technology

    2010-12-01

    social et politique dont il a besoin pour atteindre cet objectif. À cet égard, la période de la guerre froide est un exemple révélateur. En effet...TM 2010-264 v et politiques . Il introduit ensuite douze tendances convergentes qui découlent de cette analyse et classe ces dernières par...matière de politique et de défense pour répondre plus efficacement aux défis de demain. En présentant un exemple d’application, étape par étape, de

  13. STS-70 Flight: Day 3

    NASA Technical Reports Server (NTRS)

    1995-01-01

    The third day of the STS-70 mission of Space Shuttle Discovery is contained on this video. Astronauts Kregel and Thomas begin the day by working with the Hercules camera, which will record pinpoint data on the surface location of Earth observation imagery. Other work includes operations with an experiment that gauges astronauts' reflexes and hand-eye coordination. During the day, the crew spoke with World War 2 veteran, Harland Claussen, and ABC's Mike and Maty Show and the Toledo Blade newspaper (Toledo, Ohio) interviewed the astronauts via satellite link.

  14. Recoupment of Unfunded Military Labor Costs from Foreign Military Sales.

    DTIC Science & Technology

    1982-09-01

    1343964 64111 $6 3.61 SEN ESUIsP SNERATONS 13330094 376116 ass 0.90 MATiWAND E t60&? 163 .4 oil .6R10E to 367733 744 .7 3.15 PoTs/EPRoo 449407 a137? all...10 C43 :2 W~o Wa" a4m wo1-14 F 33 j k. f e 0 tv a4 j C03 a Qj~ ~ ~ W W-V 1.%5 o CDC % QPa C c t g ~z z z 24 V P.. IA. ~ ~ ~ E MV tut9606916061000W9

  15. Finite Element Analysis of ASTOVL Fighter Structure

    DTIC Science & Technology

    1991-12-01

    QUASI ISO APPROX FOR IM7-PEEK $ $MATI 150 7.30+6 .3 .148-3 2.-6 70. +M150 MA1 MAT 150 7.30+6 200. .3 .225-3 2. -6 70. +MI50 +M150 42000. 31000...P50 +P50 133 .050 45. YES $ PCOMP 1002 .040 MEM +P1002A +PI02A 133 050 45. YES $ --- FUSELAGE TOP & BOTTOM SKINS, BHDS, FRAMES, FLOORS - QUASI ISO ...SEQGP 3103 1021-3 3104 10214 3095 10215 3105 10216 $SEQGP 3141 10217 3142 10218 3143 10219 3144 10220 $SEQGP 3018 10221 3019 10222 3020 10223 3022

  16. Vagabonds de l'espace

    NASA Astrophysics Data System (ADS)

    Lang, Kenneth R.; Whitney, Charles A.; Heidmann, J.; Heidmann, M.-A.

    Les astronomes Lang et Whitney pr sentent ici sur notre syst me plan taire un livre compr hensible pour tous sans demander de connaissances pr alable en la mati re. L'ouvrage, o alternent judicieusement une criture limpide et de nombreuses photographies en partie in dites, traite une quantit poustouflante de connaissances scientifiques, tenant compte des r sultats fournis par les toute derni res missions de sondes spatiales et de satellites (1992). R f rences historiques, tableaux et bibliographie d taill e viennent le compl ter pour en faire un ouvrage qui s'adresse aussi tout fait l'astronome amateur actif. '

  17. Technical Description of Urban Microscale Modeling System: Component 1 of CRTI Project 02-0093RD

    DTIC Science & Technology

    2007-03-01

    de la dispersion concomitante des mati res lib6r6es dans ces courants est tr6s importante. Les modMles de pr6diction des courants ur- bains et de...Suffield TR 2007-067 Res u m e Ce rapport fournit une description technique des mod6les compris dans la Cornposante I d’un projet de 4 ans appel6 Initiative...principal de ce projet consiste h d6vel- opper un systbme de mod6lisation, h la pointe de la recherche scientifique et totalement valid6, de pr6diction du

  18. Modelling the Sea King Helicopter in the Integrated Performance Modelling Environment (IPME)

    DTIC Science & Technology

    2004-03-01

    scientifique (AS), des experts de Humansystems en matikre d’IPME et de facteurs humains ainsi que des experts en la mati ~ re (EM) de TopAces ayant une certaine...nmoddle de performance humaine pour les activit&s des pilotes li~es A l’hdlicopt& re Sea King. Plus particulikrement, RDDC Toronto voulait que le moddle de...moddle servirait A contr6ler un h6licopt& re Sea King simul6. L’application de mod6lisation de la performance humaine utilis6e pour ce projet 6tait

  19. Mass analyzed threshold ionization spectroscopy of p-methylanisole cation and the substitution effect

    NASA Astrophysics Data System (ADS)

    Huang, Jiangou; Li, Changyong; Tzeng, Wen Bih

    2005-10-01

    The adiabatic ionization energy of p-methylanisole is measured to be 63 972 ± 5 cm -1, which is red-shifted with respect to those of anisole and toluene. This indicates that the interaction of either CH 3 or OCH 3 group with the ring is stronger in the cationic D 0 state than that in the neutral S 0 state. Most of the observed MATI bands result from in-plane ring vibrations. The frequencies of vibrations 9b, 6a, and 1 of the p-methylanisole cation are found to be 407, 515, and 811 cm -1, respectively.

  20. Investigation of hydrogen bonding in 3-methylindole · H 2O cluster by mass analyzed threshold ionization

    NASA Astrophysics Data System (ADS)

    Georgiev, S.; Neusser, H. J.

    2004-05-01

    The adiabatic ionization energies and the threshold ion vibrational spectra of 3-methylindole and the 3-methylindole · H 2O cluster and the hydrogen bonding energy of the latter have been measured with mass analyzed threshold ionization (MATI) technique. Dissociation of the cluster has been detected as a breakdown of the threshold ion signal at the parent mass channel and the simultaneous increase of the signal at the fragment mass channel. Comparison with our previous work on indole · H 2O shows that there is only a small influence of the methyl group on the ionization energy and the hydrogen bonding strength.

  1. 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.

  2. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2008-06-01

    Les Antennes se rapprochent; Matière manquante; Galaxies trapues; Fusion de trous noirs; Thermomètre moléculaire; Supernova récente dans la Voie Lactée; Naine blanche particulière; L'étoile à neutrons 4U 1636-53; Pulsar étrange; Hubble; Fin du monde; Lunes; Extinction KT; L'axe changeant d'Europe; Ondes dans la haute atmosphère de Saturne; Anneau de Mars; Mars plus froid;

  3. Pit and Fissure Sealants in Young Adults: An Evaluation of Placement Time and Retention Rate Using Two Isolation Techniques.

    DTIC Science & Technology

    1983-01-01

    L AD-A139 429 PI AND FSSJR SEAANTS IN YOUNG ADULTS AN EVAUAON I7 D-AUN L OFPLACEMENT ME.U) AIR FORCE INST OF TECHWRIOHT-PATTERSON AFB OH B A MATIS...I ll l l ....1 , , .. .. . ... i TABLE XIV Sealant retention by tooth surface at twelve months ........................ 44 TABLE XV Sealant...cotton - 12- roll isolation and the placement time of an occIusal amalgam restoration using rubber dam isolation in contralater.. l teeth. Fifty-five

  4. DRDC Support to Exercise Cyber Storm III

    DTIC Science & Technology

    2011-10-01

    canadien de réponse aux incidents cybernétiques (CCRIC) de Sécurité publique Canada, le Centre des opérations du gouvernement (COG), le Centre...d’intervention en cas d’incident cybernétique, y compris plusieurs plans d’intervention du gouvernement fédéral. CSIII a été le premier exercice...cybernétique important à mettre à l’épreuve le Plan de gestion des incidents en matière de technologie de l’information du gouvernement du Canada (PGI TI

  5. VizieR Online Data Catalog: WASP 95-101 transits (Hellier+, 2014)

    NASA Astrophysics Data System (ADS)

    Hellier, C.; Anderson, D. R.; Cameron, A. C.; Delrez, L.; Gillon, M.; Jehin, E.; Lendl, M.; Maxted, P. F. L.; Pepe, F.; Pollacco, D.; Queloz, D.; Segransan, D.; Smalley, B.; Smith, A. M. S.; Southworth, J.; Triaud, A. H. M. J.; Udry, S.; West, R. G.

    2015-07-01

    The observational and analysis techniques used here are the same as in recent WASP discovery papers (e.g. Hellier et al., 2012MNRAS.426..739H, Cat. J/MNRAS/426/739). In outline, WASP-South surveys the visible sky each clear night using an array of 200 mm f/1.8 lenses and a cadence of ~10-min. Transit searching of accumulated light curves leads to candidates that are passed to TRAPPIST (a robotic 0.6-m photometric telescope, which can resolve blends and check that the candidate transits are planet-like), and to the 1.2-m Euler/CORALIE spectrograph [for radial-velocity (RV) observations]. About 1 in 12 candidates turns out to be a planet. Higher quality transit light curves are then obtained with TRAPPIST and with EulerCAM (Lendl et al., 2012A&A...544A..72L, Cat. J/A+A/544/A72). (2 data files).

  6. VizieR Online Data Catalog: Observation of 148 young stars toward NGC 1980 (Kounkel+, 2017)

    NASA Astrophysics Data System (ADS)

    Kounkel, M.; Hartmann, L.; Calvet, N.; Megeath, T.

    2017-09-01

    We conducted observations using the Inamori-Magellan Areal Camera and Spectrograph (IMACS) on the Magellan Baade telescope. Observations were done using the f/2 camera with the 300 line grism at a blaze angle of 17.5° and slit width of 0.6". In this configuration, the typical resolution is 4Å, and the spectral coverage is approximately 4000-9000Å. We observed four fields toward NGC1980 using the multi-slit mode on 2016 January 7. We targeted 280 sources identified by Bouy et al. 2014 (Cat. J/A+A/564/A29) with r<21mag, of which 212 sources had probabilities of membership (P) greater than 50%. The exposure time was 5*10 minutes per field for the first three fields, and the last field had the exposure time of 8*10 minutes. The weather conditions deteriorated rapidly over the course of the night, therefore, while the first field had the full sensitivity, the last field, even with the increased exposure time, yielded little in terms of the number of sources detected. Partially because of this, we have detected only 148 sources (see Table1). (1 data file).

  7. VizieR Online Data Catalog: HARPS and HARPS-N 55 Cnc radial velocities (Lopez-Morales+, 2014)

    NASA Astrophysics Data System (ADS)

    Lopez-Morales, M.; Triaud, A. H. M. J.; Rodler, F.; Dumusque, X.; Buchhave, L. A.; Harutyunyan, A.; Hoyer, S.; Alonso, R.; Gillon, M.; Kaib, N. A.; Latham, D. W.; Lovis, C.; Pepe, F.; Queloz, D.; Raymond, S. N.; Segransan, D.; Waldmann, I. P.; Udry, S.

    2017-04-01

    Shortly after the detection of 55 Cnc e's transit was announced, we requested four spectroscopic time series on HARPS (Prog. ID 288.C-5010; PI: Triaud) as Director Discretionary Time. HARPS is installed on the 3.6 m telescope at the European Southern Observatory on La Silla, Chile (Mayor et al. 2003Msngr.114...20M). The position of 55 Cnc in the sky-RA(J2000)=08:52:35.81, DE(J2000)=+28:10:50.95-is low as seen from La Silla. The target remains at a zenith distance of z<2 for only ~2.5 hr per night, with a transit duration of about 1.5 hr having to fit within this tight window. This constraint on the airmass, essential to obtain precise radial velocities (RVs), is set by the instrumental atmospheric dispersion corrector. We used the ephemeris by Gillon et al. (2012, J/A+A/539/A28), then at an advanced stage of preparation, to schedule our observations. In total, we gathered 179 spectra on the nights starting on 2012 January 27, 2012 February 13, 2012 February 27, and 2012 March 15 UT. (1 data file).

  8. VizieR Online Data Catalog: Sample SNRs for M31 and M33 (Jennings+, 2014)

    NASA Astrophysics Data System (ADS)

    Jennings, Z. G.; Williams, B. F.; Murphy, J. W.; Dalcanton, J. J.; Gilbert, K. M.; Dolphin, A. E.; Weisz, D. R.; Fouesneau, M.

    2017-05-01

    First, we select SNRs from catalogs which overlap with HST fields in M31 and M33. We limited our search to fields observed with the ACS and WFPC-2 instruments, as the optical CMDs tend to be deeper and offer the best SFH constraints. For M31, we combine three SNR catalogs to select targets from: Braun & Walterbos (1993A&AS...98..327B); Magnier et al. (1995, J/A+AS/114/215); Williams et al. (1995BAAS...27..883W). All three catalogs make use of [S II]-to-Hα ratios to identify SNR. Our M33 SNR catalog comes from Long et al. (2010, J/ApJS/187/495), who selected SNRs using both [S II]-to-Hα ratios and X-ray observations. Long et al. (2010, J/ApJS/187/495) incorporated all previous SNR catalogs from the literature in their analysis. As mentioned in Section 1, all new M31 data analyzed in this work come from newly available PHAT data sets and therefore have uniform filters and exposure times, while the M33 data comes from various archival data sets coincident with SNR. (1 data file).

  9. Effects of the virus satellite gene βC1 on host plant defense signaling and volatile emission.

    PubMed

    Salvaudon, Lucie; De Moraes, Consuelo M; Yang, Jun-Yi; Chua, Nam-Hai; Mescher, Mark C

    2013-03-01

    Tomato Yellow Leaf Curl China virus spreads together with its invasive vector, the silverleaf whitefly B biotype, which exhibits higher growth rates on infected plants. Previous studies indicate that the virus satellite gene βC1 accounts for the visible symptoms of infection and inhibits the constitutive expression of jasmonic acid (JA)--a phytohormone involved in plant defense against whiteflies--and of some JA-regulated genes. Here we present new details of the effects of on plant signaling and defense, obtained with (non-host) transgenic Arabidopsis thaliana and Nicotiana benthamiana plants. We found that JA induction in response to wounding was reduced in plants expressing βC1. This result implies that βC1 acts on conserved plant regulation mechanisms and might impair the entire JA defense pathway. Furthermore, transformed N. benthamiana plants exhibited elevated emissions of the volatile compound linalool, suggesting that βC1 also influences plant-derived olfactory cues available to vector and non-vector insects.

  10. 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).

  11. VizieR Online Data Catalog: Post-merger cluster A2255 membership (Tyler+, 2014)

    NASA Astrophysics Data System (ADS)

    Tyler, K. D.; Bai, L.; Rieke, G. H.

    2017-04-01

    A2255 was initially chosen from the Popesso et al. (2007, J/A+A/461/397) sample because it is a large cluster with complete SDSS photometric and spectroscopic coverage out to ~3 r200. It has incomplete areal spectroscopic coverage from 3 r200<~rproj<~5 r200 - about half of this region is covered. The SDSS photometric survey provides a uniform data set to study galaxy properties in the cluster. The model magnitudes are the linear combinations of best-fit exponential and de Vaucouleurs profiles and are recommended as the best estimates of magnitude by SDSS. As such, we use the model magnitudes (except where explicitly stated otherwise) and correct them for Galactic extinction (O'Donnell, 1994ApJ...422..158O). We used these photometric data to estimate galactic stellar masses with the SDSS_KCORRECT routine within KCORRECT (v. 4.2; Blanton & Roweis 2007AJ....133..734B). KCORRECT uses different cosmological values and initial mass function, so we corrected the original stellar mass output to the cosmology and initial mass function (Kroupa, 2001MNRAS.322..231K) adopted in this paper. (1 data file).

  12. Future aeromedical assessment in general aviation: a contribution to the actual discussion

    PubMed Central

    Siedenburg, J

    2008-01-01

    The past years saw a transition of competencies from the Joint Aviation Authorities (JAA) to the European Aviation Safety Agency (EASA), which was founded in 2003, based on EU Regulation 1592/02. EASA started its work in the fields of Airworthiness and will soon its competencies inter alia to Flight Operations and Flight Crew Licensing, the latter including the requirements for aeromedical assessment. The appropriate new EU Regulation will most probably be published in April. It includes the Essential Requirements for Licensing and aeromedical certification. A proposal for a new Commission Regulation promulgates the Implementing Rules for Personnel Licensing, detailing – inter alia – the Medical Requirements (Annex II to the Regulation). The specific rules, numeric standards are published as Acceptable Means of Compliance (AMC) and Guidance Material (GM). The provisions are based on JAR-FCL 3 and have been transposed to the format choosen by EASA by a small working group of aeromedical experts (FCL.001). Comments received by the European Aviation Safety Agency (EASA) prompted the agencys statement that the JAR-FCL 3 requirements for private pilots were excessive and too demanding and that a better regulation in General Aviation had to be developed. Another working group (MDM.032), including one aeromedical specialist, was tasked to draft a set of lighter requirements for non-complex aircraft used in non-commercial operations. In this context a much lighter form of aeromedical assessment - involving self-declaration by the pilot and general practitioners as asessors – has been proposed. PMID:19048096

  13. 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).

  14. VizieR Online Data Catalog: Structural parameters of true edge-on galaxies (Bizyaev+, 2014)

    NASA Astrophysics Data System (ADS)

    Bizyaev, D. V.; Kautsch, S. J.; Mosenkov, A. V.; Reshetnikov, V. P.; Sotnikova, N. Ya.; Yablokova, N. V.; Hillyer, R. W.

    2017-06-01

    The initial sample of candidates to edge-on galaxies was automatically selected from the SDSS Seventh Data Release (DR7; Abazajian et al. 2009ApJS..182..543A, Cat. II/294) using its Catalog Access Server query tools. The selection criteria are discussed in detail by Kautsch et al. (2006, J/A+A/445/765; 2006A&A...451.1171K) and Kautsch (2009AN....330..100K). This selection was based on the axial ratio, angular diameter, magnitude, and color limits. Flagged galaxies and objects with extreme magnitude errors were not included. The SDSS query was tailored to select relatively bright galaxies with apparent Petrosian magnitudes in the g band less than 20 mag using the Petrosian flux; galaxies with angular major-axis diameters larger than 30 arcsec based upon isoA_g, the isophotal major axis given in SDSS in g band; and "flat" galaxies with an axis ratio >3 in the g band, which is defined by the isophotal axes isoAg divided by isoBg. The objects are also selected in certain (-0.5<=g-r<=2) and (-0.5<=r-i<=2) color ranges. The use of the color ranges in reddening-corrected Petrosian magnitudes allows to prevent the inclusion of galaxies with unusual colors caused by active galactic nuclei, instrument flaws, or ghost images. (2 data files).

  15. 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.

  16. 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.

  17. VizieR Online Data Catalog: NGC 5548 43 year-long monitoring in Hβ (Bon+, 2016)

    NASA Astrophysics Data System (ADS)

    Bon, E.; Zucker, S.; Netzer, H.; Marziani, P.; Bon, N.; Jovanovic, P.; Shapovalova, A. I.; Komossa, S.; Gaskell, C. M.; Popovic, L. C.; Britzen, S.; Chavushyan, V. H.; Burenkov, A. N.; Sergeev, S.; La Mura, G.; Valdes, J. R.; Stalevski, M.

    2016-10-01

    We analyzed 1600 spectra of NGC 5548 in the Hβ spectral interval, covering 43 years. We used: (a) archival spectra obtained by K.K. Chuvaev from 1972-1988 (Sergeev+ 2007ApJ...668..708S) prior to the International AGN Watch (IAW) campaigns. These early spectra were recorded on photographic plates acquired with an image tube at the 2.6m Shajn Telescope of the Crimean Astrophysical Observatory. (b) The 13 year study (from 1988 to 2002) of the IAW program (Peterson+ 2002ApJ...581..197P), which provided 1530 optical continuum measurements and 1248 Hβ measurements. (c) A spectral monitoring program with the 6 and 1m telescopes of the Special Astrophysical Observatory (SAO) in Russia from 1996 to 2002, and the 2.1m telescope of Guillermo Haro Observatory (GHO) in Cananea, Mexico, from 1996 to 2003 (S04; Shapovalova+ 2004, J/A+A/422/925). (d) More recent, unpublished observations of the same program covering 2003-2013 observed at SAO (see Table 1), and a continuation of the monitoring campaign presented in S04. (e) Spectra from the new IAW campaign obtained at Asiago observatory in 2012, 2013, and 2015. (f) New unpublished observations from 2013 from the Asiago observatory (also given in Table 1). See section 2 for further details. (2 data files).

  18. 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.

  19. 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).

  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: Dynamics of A3266. I. An Optical View. (Dehghan+, 2017)

    NASA Astrophysics Data System (ADS)

    Dehghan, S.; Johnston-Hollitt, M.; Colless, M.; Miller, R.

    2017-03-01

    Spectroscopic redshifts for 1303 galaxies within a 2-degree field around Abell 3266. Redshifts are listed for 880 galaxies observed with the 2dF instrument on the Anglo-Australian Telescope (Dehghan et al., 2017, this paper), 391 objects from the compilation of Quintana et al. (1996, Cat. J/AJ/112/36), 264 objects from the WIde-field Nearby Galaxy-cluster Survey (WINGS; Cava et al., 2009, Cat. J/A+A/495/707), and an additional 39 objects from various works in the literature within one degree of the nominal centre of A3266. The 880 galaxies from the 2dF sample were observed on 29 December 1997 and 5 October 1999. Four fibre configurations were observed, all covering a single 2-degree-diameter field around the nominal cluster centre of RA=04:31:09.7, DE=-61:28:40 (J2000). The data were reduced with the 2dfdr pipeline reduction software for 2dF, and redshifts were measured using a modified version of the program used for the 2dF Galaxy Redshift Survey (Colless et al., 2001MNRAS.328.1039C, Cat. VII/226). The positions of the AAO catalogue come from the UK Schmidt Telescope southern sky survey plate for field F118, scanned with the Automated Plate Measuring machine (Maddox et al., 1990MNRAS.243..692M). Full details can be found in the paper. (1 data file).

  2. 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).

  3. Air - Net of Polish Permanent Station Rtk Dgps In Programme Eur Rvsm

    NASA Astrophysics Data System (ADS)

    Fellner, A.

    All aircraft intending to operate in the EUR RVSM Airspace, except State aircraft, shall require an Reduced Vertical Separation Minimum approval issued by the responsible authority. To obtain such an approval, aircraft operators will have to satisfy the requirements set out in Joint Aviation Authorities (JAA) Temporary Guidance Leaflet No6 (TGL6), which require: · that aircraft for which RVSM Approval is sought have the vertical navigation performance capability required for RVSM operations through compliance with the criteria of the RVSM Minimum Aircraft System Performance Specification (MASPS); · that, they have instituted procedures for continued airworthiness (maintenance and repair) practices; · that they have instituted flight crew procedures for operations in the EUR RVSM Airspace. A comprehensive means of monitoring the height ­ keeping performance of aircraft has been developed utilising two types of equipment: · Height Monitoring Units ­ static height monitoring facilities; · GPS Monitoring Units ­ portable monitoring units on board aircraft. Poster present select problems connected of Polish Air - System RTK DGPS in EUR RVSM Programme. Reached results became during air - tests in years 1995 ­ 2001.

  4. VizieR Online Data Catalog: NGC1068 interferometric mid-IR measurements (Lopez-Gonzaga+, 2017)

    NASA Astrophysics Data System (ADS)

    Lopez-Gonzaga, N.; Asmus, D.; Bauer, F. E.; Tristram, K. R. W.; Burtscher, L.; Marinucci, A.; Matt, G.; Harrison, F. A.

    2017-06-01

    Single-aperture mid-infrared images and spectra were taken with the VLT spectrometer and imager for the mid-infrared (VISIR). Interferometric measurements were obtained with the instrument MIDI at the ESO's VLTI facility. Observations with intermediate AT baselines were requested and observed during the nights of January, 10, 20, and 23, 2015 using Director's discretionary time (DDT). We additionally included published and unpublished interferometric data from our previous campaigns with the requirement that they were observed (nearly) contemporaneously to the period of X-ray variation or observed a few years before. These include observations taken on the nights of September, 21, 26, and 30, 2014, and November, 17, 2014, using Guaranteed Time Observations (GTO). For our observations we used the low-resolution NaCl prism with spectral resolution R=λ/Δλ~30 to disperse the light of the beams. A log of the observations and instrument setup can be found in Appendix A. The published data were taken from Lopez-Gonzaga et al. (2014A&A...565A..71L, Cat. J/A+A/565/A71). (2 data files).

  5. VizieR Online Data Catalog: M33 molecular clouds and young stellar clusters (Corbelli+, 2017)

    NASA Astrophysics Data System (ADS)

    Corbelli, E.; Braine, J.; Bandiera, R.; Brouillet, N.; Combes, F.; Druard, C.; Gratier, P.; Mata, J.; Schuster, K.; Xilouris, M.; Palla, F.

    2017-04-01

    Table 5 : Physical parameters for the 566 molecular clouds identified through the IRAM 30m CO J=2-1 survey of the star forming disk of M33. For each cloud the cloud type and the following properties are listed: celestial coordinates, galactocentric radius, cloud deconvolved effective radius and its uncertainty, CO(2-1) line velocity dispersion from CPROPS and its uncertainty, line velocity dispersion from a Gaussian fit, CO luminous mass and its uncertainty, and virial mass from a Gaussian fit. In the last column the identification number of the young stellar cluster candidates associated with the molecular cloud are listed. Notes: We identify up to four young stellar cluster candidates (YSCCs) associated with each molecular cloud and we list them according to the identification number of Sharma et al. (2011, Cat. J/A+A/545/A96) given also in Table 6. Table 6 : Physical parameters for the 630 young stellar cluster candidates identified via their mid-infrared emission in the star forming disk of M33. For each YSCC we list the type of source, the identified number of the molecular clouds associated with it (if any) and the corresponding cloud classes. In addition, for each YSCC we give the celestial coordinates, the bolometric, total infrared, FUV and Halpha luminosities, the estimated mass and age, the visual extinction, the galactocentric radius, the source size, and its flux at 24μm. (2 data files).

  6. 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).

  7. 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).

  8. VizieR Online Data Catalog: Abundances in the Galactic disk (Bensby+, 2003)

    NASA Astrophysics Data System (ADS)

    Bensby, T.; Feltzing, S.; Lundstrom, I.

    2003-08-01

    In table 3 we list all spectral lines that have been used in the determination of abundances. Column 1 gives the wavelength (in Angstrom), column 2 the lower excitation potential (in eV), column 3 the correction factor to the classical Unsoeld damping constant, and column 5 the radiation damping constant. An "S" in column 4 indicates that the broadening by collisions have been taken from Anstee & O'Mara (1995MNRAS.276..859A), Barklem & O'Mara (1997MNRAS.290..102B, 1998MNRAS.300..863B), and Barklem et al. (1998MNRAS.296.1057B, 2000, Cat. <J/A+AS/142/467>), instead of the classical Unsoeld broadening (indicated by a "U"). The solar abundance that is given for each element is the photospheric value from Grevesse & Sauval (1998SSRv...85..161G ). Column 6 gives our adopted log gf - values and column 7 the references. In table 6 we give the derived abundances for all individual elements (atoms and ions). The results for each star consist of three rows. The top row gives the mean abundance, the middle row gives the (1 sigma) standard deviation around the mean, and the third row gives the number of spectral lines that was used in computing the mean. All abundances are given relatively our solar values, which in turn is normalized to the standard photospheric values in Grevesse & Sauval (1998SSRv...85..161G ). (3 data files).

  9. VizieR Online Data Catalog: Global properties of z=1~2 GMASS galaxies (Tang+, 2014)

    NASA Astrophysics Data System (ADS)

    Tang, Y.; Giavalisco, M.; Guo, Y.; Kurk, J.

    2017-04-01

    The sample of galaxies discussed here is extracted from the Galaxy Mass Assembly Spectroscopic Survey (GMASS) described by Kurk et al. (2013, J/A+A/549/A63), a program of spectroscopic observations of a mid-IR magnitude-limited (mAB of IRAC 4.5<23.0) sample selected from a 6.8'x6.8' field in the GOODS-S field (Giavalisco et al. 2004ApJ...600L..93G). The main scientific motivation of GMASS was to investigate the mass assembly and evolution of galaxies within the redshift range 1.310 hr for the blue masks and 20-30 hr for the red masks. (1 data file).

  10. VizieR Online Data Catalog: Star formation in early-type galaxies (Longhetti+ 1999)

    NASA Astrophysics Data System (ADS)

    Longhetti, M.; Bressan, A.; Chiosi, C.; Rampazzo, R.

    1999-04-01

    We analyze the star formation properties of a sample of 21 shell galaxies and 30 early-type galaxies members of interacting pairs, located in low density environments (Longhetti et al., 1998, Cat. <J/A+AS/130/251>, 1998A&AS..130..267L). The study is based on new models developed to interpret the information coming from `blue' HδFeI, H+K(CaII) and D4000 line-strength indices proposed by Rose (1984AJ.....89.1238R; 1985AJ.....90.1927R) and Hamilton (1985ApJ...297..371H). We find that the last star forming event that occurred in the nuclear region of shell galaxies is statistically old (from 0.1 up to several Gyr) with respect to the corresponding one in the sub-sample of pair galaxies (<0.1Gyr or even ongoing star formation). If the stellar activity is somehow related to the formation of shells, as predicted by several dynamical models of galaxy interaction, shells have to be considered long lasting structures. Since pair members show evidence of very recent star formation, we suggest that either large reservoirs of gas have to be present to maintain active star formation, if these galaxies are on periodic orbits, or most of the pair members in the present sample are experiencing unbound encounters. (1 data file).

  11. VizieR Online Data Catalog: Variable sources detected by INTEGRAL (Telezhinsky+, 2010)

    NASA Astrophysics Data System (ADS)

    Telezhinsky, I.; Eckert, D.; Savchenko, V.; Neronov, A.; Produit, N.; Courvoisier, T. J.-L.

    2010-08-01

    The catalog gives the values of fractional variability, the flux, and the corresponding 2σ errors of the sources from the INTEGRAL Reference Catalog (Cat. J/A+A/411/L59) version 30. The data is given for 3 energy bands: 20-40, 40-100, and 100-200keV. The exposure times of the sources are given for each energy band only if the source was detected in the given band. The last column gives the source type according to the reference catalog. If the source is localized in more then one map then the weighted mean values of the flux and variability are given. The sources active during specific time periods and not detected at the total variability map are indicated with "b" letter in the Flag column. The sources detected only at the total variability map are indicated with "i" letter respectively. Letter "g" indicates that the source was affected by the "ghost". The numbers after the variability columns show the time period map where the source is visible and asterix means that the source is not detected at the respective significance map. Lower limit for fractional variability is given in such a case. (1 data file).

  12. 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).

  13. VizieR Online Data Catalog: Polarization and photometry for blazar W Comae (Sorcia+, 2014)

    NASA Astrophysics Data System (ADS)

    Sorcia, M.; Benitez, E.; Hiriart, D.; Lopez, J. M.; Cabrera, J. I.; Mujica, R.

    2017-04-01

    The observations were carried out with the 0.84 m f/15 Ritchey-Chretien telescope at the Observatorio Astronomico Nacional of San Pedro Martir (OAN-SPM) in Baja California, Mexico and the instrument POLIMA. The differential R-band magnitudes of W Comae were calculated using the standard star A distant about ~1.2 arcminutes to the southeast from the studied object. The magnitude of the comparison star A in the R band is (11.72+/-0.04) mag (Fiorucci & Tosti 1996, J/A+AS/116/403). Because of the narrow field of view of the instrument, ~4 arcminutes, this was the only standard star available for calibration with a reasonable flux level. The exposure time was 80 s per image for W Comae. Polarimetric calibrations were made using the polarized standard stars ViCyg12 and HD 155197 and the unpolarized standard stars GD319 and BD+332642 (Schmidt et al. 1992AJ....104.1563S). W Comae was observed between 2008 February 28 and 2013 May 17. During this period, 32 observing runs of 7 nights per run were carried out around the new moon phase; in total, we collected 141 data points. (1 data file).

  14. VizieR Online Data Catalog: ESO Slice Project. VI. Groups of Galaxies. (Ramella+ 1999)

    NASA Astrophysics Data System (ADS)

    Ramella, M.; Zamorani, G.; Zucca, E.; Stirpe, G. M.; Vettolani, G.; Balkowski, C.; Blanchard, A.; Cappi, A.; Cayatte, V.; Chincarini, G.; Collins, C.; Guzzo, L.; MacGillivray, H.; Maccagni, D.; Maurogordato, S.; Merighi, R.; Mignoli, M.; Pisani, A.; Proust, D.; Scaramella, R.

    1998-11-01

    In Table 1 we present our group catalog. For each group we list the ID number (column 1), the number of members (column 2), the coordinates α(1950) and δ(1950) (columns 3 and 4 respectively), the mean radial velocity cz in km/s corrected for Virgo infall and galactic rotation (column 5), and the velocity dispersion σcz (column 6). We compute the velocity dispersion following the prescription of Ledermann (1984) for an unbiased estimator of the dispersion (see previous section). We also take into account the cosmological expansion of the universe and the measurement errors according to the prescriptions of Danese et al. (1980A&A....82..322D). The errors we associate to the redshifts are those output by the RVSAO cross-correlation procedure multiplied by a factor 1.6. This factor brings the cross-correlation error in rough agreement with the external error estimated from repeated observations (Vettolani et al., 1998, Cat. <J/A+AS/130/323> -- here we do not distinguish between emission and absorption line redshifts). (1 data file).

  15. 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).

  16. VizieR Online Data Catalog: WASP-22 and WASP-26 photometry and velocities (Anderson+, 2011)

    NASA Astrophysics Data System (ADS)

    Anderson, D. R.; Collier, Cameron A.; Gillon, M.; Hellier, C.; Jehin, E.; Lendl, M.; Queloz, D.; Smalley, B.; Triaud, A. H. M. J.; Vanhuysse, M.

    2011-09-01

    Using the HARPS spectrograph on the ESO 3.6-m telescope (La Silla, Chile), spectra of the planet host stars WASP-22 and WASP-26 were obtained through transits of their close-in planets, as well as across their orbits. The radial-velocity (RV) measurements extracted from the spectra are presented here. RVs were re-extracted from the six HARPS spectra of WASP-22 obtained by Maxted et al. (2010AJ....140.2007M) after removal of the instrumental blaze function (Triaud et al. 2010, Cat. J/A+A/524/A25) and are presented here. Photometric transit observations of WASP-22 were obtained by the 0.6-m TRAPPIST and 1.2-m Euler telescopes (both at La Silla). A transit of WASP-26b was observed by the 0.35-m telescope at Oversky Observatory, La Palma. The Oversky data were originally made available at the Exoplanet Transit Database (http://var2.astro.cz/ETD/). The data are plotted in Figures 1 and 2. (2 data files).

  17. Threshold Ionization and Spin-Orbit Coupling of Cerium Monoxide

    NASA Astrophysics Data System (ADS)

    Cao, Wenjin; Zhang, Yuchen; Wu, Lu; Yang, Dong-Sheng

    2017-06-01

    Cerium oxides are widely used in heterogeneous catalysis due to their ability to switch between different oxidation states. We report here the mass-analyzed threshold ionization (MATI) spectroscopy of cerium monoxide (CeO) produced by laser ablating a Ce rod in a molecular beam source. The MATI spectrum in the range of 40000-45000 \\wn exhibits several band systems with similar vibrational progressions. The strongest band is at 43015 (5) \\wn, which can be assigned as the adiabatic ionization energy of the neutral species. The spectrum also shows Ce-O stretching frequencies of 817 and 890 \\wn in the neutral and ion states, respectively. By comparing with spin-orbit coupled multireference quasi-degenerate perturbation theory (SO-MCQDPT) calculations, the observed band systems are assigned to transitions from various low-energy spin-orbit levels of the neutral oxide to the two lowest spin-orbit levels of the corresponding ion. The current work will also be compared with previous experimental and computational studies on the neutral species.

  18. 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.

  19. Spectral shifts and structures of phenol...Ar(n) clusters.

    PubMed

    Armentano, Antonio; Cerný, Jiří; Riese, Mikko; Taherkhani, Mehran; Ben Yezzar, Med; Müller-Dethlefs, Klaus

    2011-04-07

    A laser spectroscopic investigation of phenol...Ar(n) (n = 1-6) clusters in the first electronically excited state (S(1)) and the cationic ground state (D(0)) is reported. Resonance enhanced two-photon ionisation (R2PI) spectra have been recorded for the investigation of the S(1) state. The origins of S(1)← S(0) (S(1)0(0)) transition of phenol...Ar(n) (n = 1, 2,4-6) are all red shifted compared to the S(1)0(0) state of the monomer by 33 cm(-1), 67 cm(-1), 10 cm(-1), 20 cm(-1), 44 cm(-1), respectively. However, the origin of the phenolAr(3) cluster is blue shifted by 25 cm(-1). For the investigation of the ionic ground state photoionization efficiency (PIE) and mass-analyzed-threshold ionization (MATI) spectroscopy have been applied. The spectra of phenol...Ar(3) and phenol...Ar(4) yield values for the ionization energy (IE) of 68,077 ± 15 cm(-1) and 67,948 ± 15 cm(-1). With the combination of theoretical methods and R2PI, PIE and MATI spectroscopy, the major species present have been positively identified.

  20. Appel pour une allocation intelligente dans le financement du système de santé au Cameroun

    PubMed Central

    Sieleunou, Isidore

    2011-01-01

    Le Cameroun utilise un système de budgétisation historique et une approche «top-down» pour allouer ses ressources de santé publique. Cependant, le pays compte 175 districts de santé dont les fortes disparités de nature épidémiologique, économique, géographique et culturelle, devraient être prises en compte pour réduire les iniquités en matière de sante publique. Comment comprendre alors que dans ces conditions, le budget des administrations publiques alloué aux différents districts de santé au Cameroun soit quasi identique alors que les défis sont si différents? L'inefficience allocative (mauvaise attribution du budget) générée par un tel système conduit vraisemblablement à une inefficience technique (mauvaise utilisation du budget). Pour la marche vers l'atteinte des objectifs du millénaire en matière de sante, il est impératif et urgent que les décideurs du secteur de la santé allouent de manière intelligente les ressources dans le système de santé. PMID:22355420

  1. DFT-Supported Threshold Ionization Study of Chromium Biphenyl Complexes: Unveiling the Mechanisms of Substituent Influence on Redox Properties of Sandwich Compounds.

    PubMed

    Ketkov, Sergey Yu; Tzeng, Sheng-Yuan; Wu, Pei-Ying; Markin, Gennady V; Tzeng, Wen-Bih

    2017-07-05

    High-resolution mass-analyzed threshold ionization (MATI) spectra of (η(6) -Ph2 )2 Cr and (η(6) -Ph2 )(η(6) -PhMe)Cr demonstrate that the Ph groups work as electron donors, decreasing the ionization energy of the gas-phase bisarene complexes. In contrast to electrochemical data, a close similarity of the Ph and Me group effects on the oxidation of free sandwich molecules has been revealed. However, DFT calculations testify for the opposite shifts of the electron density caused by the Me and Ph substituents in the neutral complexes, the latter behaving as an electron-accepting fragment. On the contrary, in the bisarene cations, the Ph group becomes a stronger donor than methyl. This change provides the similar substituent effects observed with the MATI experiment. On the other hand, the well-documented opposite influence of the Me and Ph fragments on the redox potential of the (η(6) -arene)2 Cr(+/0) couple in solution appears to be a result of solvation effects but not intramolecular interactions as shown for the first time in this work. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  2. Threshold Ionization Spectroscopy of La(CH_{3}CN) and La(C_{4}H_{9}CN) Radicals Formed by la Reactions with Alkane Nitriles

    NASA Astrophysics Data System (ADS)

    Ullah, Ahamed; Kim, Jong Hyun; Cao, Wenjin; Yang, Dong-Sheng

    2017-06-01

    La atom reactions with acetonitrile (CH_{3}CN) and pentanenitrile (C_{4}H_{9}CN) are carried out in a laser-vaporization supersonic molecular beam source. Metal-containing species are observed using time-of-flight mass spectrometry. In this talk, we report the mass-analyzed threshold ionization (MATI) spectroscopic characterization of two metal-containing radicals, La(CH_{3}CN) and La(C_{4}H_{9}CN), formed by La associations with acetonitrile and pentanenitrile, respectively. Adiabatic ionization energies of the two La-alkane nitrile species and their vibrational frequencies are measured from the MATI spectra. Metal-ligand binding modes and molecular structures are investigated by comparing the spectroscopic measurements with density functional theory calculations and spectral simulations. For both alkane nitriles, the preferred La binding site is identified to be the nitrile group with a π-bind mode, the resultant metal complexes are three-membered metallacycles. While a single isomer is observed for La(CH_{3}CN), two rotational conformers are identified for La(C_{4}H_{9}CN). The binding and structures of these metal-alkane nitrile radicals are different from those formed by metal ion reactions, where metal ions were reported to favor σ binding with the nitrogen atom. K. Eller, W. Zummack, H. Schwarz, L. M. Roth, B. S. Freiser, J. Am. Chem. Soc., 1991, 113, 833-839

  3. L’utilisation du prémélange de monensin chez les vaches laitières : un suivi simple et essentiel pour s’assurer d’une utilisation adéquate

    PubMed Central

    Dubuc, Jocelyn; Baril, Jean; DesCôteaux, Luc

    2009-01-01

    Le prémélange de monensin est utilisé fréquemment sur les fermes laitières canadiennes. L’ingrédient actif de ce produit est le monensin sodique. Bien que son utilisation chez les vaches laitières soit sécuritaire, des cas de surdose ont été rapportés à la suite de consommation de niveaux de monensin plus élevés que ceux recommandés. Un suivi hebdomadaire du pourcentage de matières grasses du réservoir de lait de la ferme devrait être fait de routine suite à la livraison d’aliment médicamenteux contenant du monensin pour détecter rapidement les situations de surdose. L’observation d’une baisse soudaine de la consommation volontaire de matière sèche et l’apparition de diarrhée dans un troupeau sont d’autres signes cliniques de surdose de monensin. Une détection rapide de ces cas permettra de corriger la situation. PMID:19721781

  4. One-photon mass-analyzed threshold ionization spectroscopy of 2-bromopropene (2-C3H5Br): Analysis of vibration and internal rotation in the cation

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Myung Soo

    2003-12-01

    Vibrational spectrum of 2-C3H5Br cation in the ground electronic state was obtained by one-photon mass-analyzed threshold ionization (MATI) spectroscopy using coherent vacuum ultraviolet radiation generated by four-wave difference frequency mixing in Kr. From the MATI spectra, ionization energy of 2-C3H5Br to the ionic ground state has been determined to be 9.4377±0.0006 eV. Vibrational assignments have been made by comparing with the vibrational frequencies and Franck-Condon factors calculated at the B3LYP and BP86 levels with the 6-311++G(3df,3pd) basis set. Several low-frequency bands have been assigned to the torsional motion of the methyl group in the cation. Energies of the torsional states and relative transition intensities to these states have been reproduced well by a one-dimensional rotor model. The torsional barrier and internal rotational constant have been determined to be 80.0 and 5.13 cm-1, respectively.

  5. Nanosecond multiphoton ionization spectroscopy of transition-metal sandwich compounds: a comparative study of nickelocene, ferrocene and bis(η-benzene)chromium

    NASA Astrophysics Data System (ADS)

    Ketkov, Sergey Yu.; Selzle, Heinrich L.; Schlag, Edward W.

    Efficient multiphoton ionization of nickelocene, ferrocene and bis(η6-benzene)chromium was achieved on excitation of jet-cooled sandwich molecules with nanosecond pulses of dye lasers via an intermediate low-lying Rydberg 4px,y level. One-colour photoionization mass spectra revealing solely molecular ion signals were obtained. The signal intensity increases significantly when an intense pulse of a second dye laser is used for ionization of the Rydberg-state molecules. Two-colour resonance-enhanced multiphoton ionization spectra of Cp2Fe (Cp = η5-C5H5) and Bz2Cr (Bz = η6-C6H6) show vibronic structures of the a1g(3dz2) → e1u(R4px,y) transition. The metal-ligand symmetric stretch ν4 wavenumbers for the Rydberg-state molecules are 310 and 263 cm-1, respectively. Multiphoton mass-analysed threshold ionization (MATI) signals appear for Bz2Cr when the TMPH1749math001 ν4 wavenumber for the ground-state Bz2Cr+ cation is 262 cm-1 as determined from the MATI spectrum. The influence of electronic structure on the photoionization behaviour of the sandwich molecules is discussed.

  6. One-photon mass-analyzed threshold ionization spectroscopy of 2-chloropropene (2-C3H5Cl) and its vibrational assignment based on the density-functional theory calculations

    NASA Astrophysics Data System (ADS)

    Bae, Yong Jin; Lee, Mina; Kim, Myung Soo

    2005-07-01

    A high-quality mass-analyzed threshold ionization (MATI) spectrum of 2-chloropropene, 2-C3H5Cl, is reported. Its ionization energy determined for the first time from the 0-0 band position was 9.5395±0.0006eV. Almost all the peaks in the MATI spectrum could be vibrationally assigned utilizing the frequencies calculated at the B3LYP /6-311++G(3df,3pd) level and the Franck-Condon factors calculated with the molecular parameters obtained at the same level. In particular, the observed methyl torsional progression could be reproduced very well through quantum-mechanical calculations using the molecular parameters obtained at this level. Dramatic lowering of the torsional barrier inferred from the experimental data was entirely compatible with the B3LYP /6-311++G(3df,3pd) results. The torsional barrier and the internal rotational constant determined by fits to six torsional peaks were 53.6 and 5.20cm-1, respectively. A brief discussion at the level of molecular orbital is presented to account for the dramatic lowering of the torsional barrier upon ionization.

  7. Multiple Isomers of La(C4H6) Formed in Reactions of la Atom with Small Hydrocarbons

    NASA Astrophysics Data System (ADS)

    Cao, Wenjin; Hewage, Dilrukshi; Yang, Dong-Sheng

    2014-06-01

    La(C_4H_6) was observed from the reactions of laser-vaporized La atom with propene (CH_2CHCH_3),isobutene [CH_2C(CH_3)2],1-butyne (CHCC_2H_5), and 2-butyne (CH_3CCCH_3) in a metal cluster beam source and investigated by mass-analyzed threshold ionization (MATI) spectroscopy in combination with quantum chemical calculations and spectral simulations. La(cyclobutene) [La(CH_2CHCHCH_2)] and La(trimethylenemethane) [LaC(CH_2)_3] were identified from the La + propene reaction. The formation of the two isomers involves two steps: the first step is the reaction of La+ CH_2CHCH_3 with the products of La(CH_2) + C_2H_4, and the second step is the reaction of LaCH_2 + CH_2CHCH_3 which preduces La(C_4H_6) + H_2. For the La + isobutene reaction, La(trimethylenemethane) was formed by dehydrogenation. For the reaction of La + 1- and 2-butynes, preliminary data analysis suggested that La(C_4H_6) was formed by simple association. All these structural isomers have similar geometries in the neutral and singly charged ion states, as evidenced by the very strong origin bands and short Franck-Condon profiles in the MATI spectra.

  8. Mass-analyzed threshold ionization of an excited state of lanthanum dioxide

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Liu, Yang; Zhang, Changhua; Li, Shenggang; Dixon, David A.; Yang, Dong-Sheng

    2012-07-01

    LaO2 was produced in a pulsed laser-vaporization molecular beam source and studied by mass-analyzed threshold ionization (MATI) spectroscopy and ab initio electronic structure calculations. The calculations included density functional theory, second-order perturbation theory, coupled cluster theory, and complete active space self-consistent field methods. The adiabatic ionization energy of the molecule and vibrational frequencies of the molecule and its cation were measured accurately for the first time from the MATI spectrum. Numerous ionization processes of lanthanum dioxide, peroxide, and superoxide were considered; the 3B2 ← 4B2 electronic transition of the dioxide was assigned upon comparison with the observed spectrum. The ionization energy and O-La-O bending frequency of the 4B2 neutral state are 4.9760 (6) eV and 92 cm-1, respectively. The La-O stretching and O-La-O bending frequencies of the 3B2 cationic state are 656 and 122 cm-1, respectively. The 4B2 state is formed by two electron transfer from lanthanum to oxygen atoms, and the 3B2 state is produced by the further removal of a lanthanum 6s-based electron.

  9. C-C Bond Activation and Coupling of Propene Induced by la Atom

    NASA Astrophysics Data System (ADS)

    Hewage, Dilrukshi; Tao, Hong; Silva, Ruchira; Kumari, Sudesh; Yang, Dong-Sheng

    2013-06-01

    A series of La(C_nH_m) complexes with n ≤ 6 and m ≤ 12 were produced by the reactions between propene and La in a supersonic molecular beam source. Their formation and structures were investigated using mass-analyzed threshold ionization (MATI) spectroscopy in combination with theoretical calculations. Previously, we identified the formation of La(C_3H_4) and H-La(C_3H_5) through dehydrogenation and metal insertion mechanisms. In this work, we will discuss the formation of La(CH_2) and La(C_4H_6) by La induced C-C bond activation and coupling. La(CH_2) is formed by the C-C bond breakage and 1,2-hydride shift of propene and is a Schrock-type carbene complex. This complex is then coupled with the C=C bond of a second propene molecule to form La(C_4H_6) by removing two hydrogen atoms. The resultant La(C_4H_6) complex was idetified in two low-energy isomeric forms: one was a metallacycle (isomer A) and the other was lanthanum trimethylenemethane (isomer B). Both La(C_4H_6) isomers are in a doublet ground state, with isomer A in C_s point group and isomer B in C_3_v. Adiabatic ionization energies and several vibrational frequencies of the two complexes were obtained from the sharp MATI spectra.

  10. Threshold ionization spectroscopy of H2O, HDO and D2O and low-lying vibrational levels of HDO+ and D2O+

    NASA Astrophysics Data System (ADS)

    Lauzin, Clément; Jacovella, Ugo; Merkt, Frédéric

    2015-12-01

    Rotationally resolved photoelectron spectra of jet-cooled H2O, HDO and D2O have been recorded near the origin of the ? photoionising transition following single-photon ionization using the complementary techniques of mass-analysed threshold-ionization (MATI) and pulsed-field-ionization zero-kinetic-energy (PFI-ZEKE) photoelectron spectroscopy. A gas mixture of H2O, HDO and D2O with Ar was obtained by mixing H2O (ℓ) and D2O (ℓ) in a reservoir and bubbling Ar gas through the mixture. To unambiguously assign the photoelectron bands to H2O, HDO or D2O, the PFI-ZEKE photoelectron spectra of the mixture were compared to MATI spectra and to spectra of H2O. Analysis of the rotational structure of the origin bands (v+1 = 0, v2+ = 0, v+3 = 0) ← (v1 = 0, v2 = 0, v3 = 0) of H2O, HDO and D2O and of the transitions to the (010), (020) and (100) levels of D2O+ and the first excited level of the O-D stretching mode of HDO+ provided new information on the photoionization dynamics of water and the energy level structure of HDO+ and D2O+.

  11. 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.

  12. Photoelectron angular distributions in molecular above threshold ionization by two colour circularly polarized ultrashort UV laser pulses

    NASA Astrophysics Data System (ADS)

    Yuan, Kai-Jun; Bandrauk, André D.

    2013-10-01

    Photoionization of an aligned molecular ion H? has been investigated with two colour circularly polarized ultrashort UV laser pulses by numerically solving the corresponding time dependent Schrödinger equation. Photoelectron angular distributions (PADs) in molecular above threshold ionization (MATI) exhibit: (i) asymmetry resulting from interference of coherent electron wave packets from multiple pathway ionization, which depends critically on the relative carrier envelope phase (CEP) ? between the two colour laser pulses and photoelectron kinetic energies; (ii) rotation with respect to the molecular symmetry axes due to effects of the nonspherical two center Coulomb potential. Such features are described by multi-photon perturbative theoretical ionization models. The ionization probability is functions of both the CEP ? and the angle ? between the electron emission and the molecular axis. The influence of pulse intensity and ellipticity on PADs in MATI is also investigated. It is found that the asymmetry depends on the pulse intensity whereas the rotation angle is shown to be sensitive to the pulse ellipticity, both reflecting the orientation dependence of molecular ionization probabilities.

  13. Ce-PROMOTED Bond Activation of Ethylene Probed by Mass-Analyzed Threshold Ionization Spectroscopy

    NASA Astrophysics Data System (ADS)

    Zhang, Yuchen; Kumari, Sudesh; Cao, Wenjin; Yang, Dong-Sheng

    2015-06-01

    Ce(C_2H_2) and Ce(C_4H_6) complexes were observed in the reaction of Ce atom with ethylene in a supersonic molecular beam source and investigated by mass-analyzed threshold ionization spectroscopy (MATI) and theoretical calculations. Preliminary data analysis shows that Ce(C_2H_2) has a triangle structure (C2v) with Ce binding to C_2H_2 in a two-fold mode and Ce(C_4H_6) has a five-membered metallacyclic structure (Cs) with Ce binding to the two terminal carbon atoms of butadiene. The ground states of both species are triplets with a 4f16s1 Ce-based electron configuration and those of the corresponding ions are doublets from the removal of the 6s1 electron. The Ce(C_2H_2) complex is formed by ethylene dehydrogenation, whereas Ce(C_4H_6) by ethylene dehydrogenation and carbon-carbon bond coupling. The MATI spectra of Ce(C_2H_2) and Ce(C_4H_6) are rather similar to those of the corresponding La complexes previously observed by our group, except that the spectra of the Ce complexes exhibit two electronic transitions with almost identical vibrational intervals. This observation suggests that the existence of a 4f electron results in an increased complexity of the electronic spectra and states of the lanthanide hydrocarbons.

  14. Threshold Ionization of La(C_5H_8) Formed by La-MEDIATED Dehydrogenation of 1-PENTENE

    NASA Astrophysics Data System (ADS)

    Cao, Wenjin; Zhang, Yuchen; Yang, Dong-Sheng

    2016-06-01

    La(C_5H_8) was formed by La reaction with 1-pentene (CH2=CH-CH2-CH3) in a laser-vaporization supersonic molecular beam source and characterized with mass-analyzed threshold ionization (MATI) spectroscopy. The MATI spectrum displays an origin band at 38988 (5) wn and three vibrational intervals of 130, 294, and 415 wn. The La(C_5H_8) complex is identified as a five-membered metallacycle in C1 point group, with the doublet and singlet being the lowest energy states of the neutral and cation, respectively. The energy at 38998 wn corresponds to the adiabatic ionization energy of the complex, and the three vibration intervals in the order of the frequency increase are assigned to the terminal CH_3 torsion, asymmetric La-ligand stretch, and symmetric La-ligand stretch excitation of the ion. The La + 1-penetene reaction will also be compared with La reactions with other five-carbon hydrocarbon molecules, such as isoprene, 1-pentyne, and 1,4-pentadiene.

  15. Mass-analyzed threshold ionization spectroscopy of the rotamers of p-n-propylphenol cations and configuration effect

    NASA Astrophysics Data System (ADS)

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

    2005-01-01

    Two-color resonant two-photon mass-analyzed threshold ionization (MATI) spectroscopy was used to record the vibrationally resolved cation spectra of the selected rotamers of p-n-propylphenol. The adiabatic ionization energies of the trans, gauche-A, and gauche-B rotamers are determined to be 65 283±5, 65 385±5, and 65 369±5 cm-1, which are less than that of phenol by 3342, 3240, and 3256 cm-1, respectively. This suggests that the n-propyl substitution causes a greater degree in lowering the energy level in the cationic than the neutral ground state. Analysis on the MATI spectra of the selected rotamers of p-n-propylphenol cation shows that the relative orientation of the p-n-alkyl group has little effect on the in-plane ring vibrations. However, the low-frequency C3H7 bending vibrations appear to be active only for the two gauche forms of the cation.

  16. Mass-analyzed threshold ionization and structural isomers of M3O4 (M = Sc, Y, and La)

    NASA Astrophysics Data System (ADS)

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

    2012-08-01

    M3O4 (M = Sc, Y, and La) were produced in a pulsed laser-vaporization molecular beam source and studied by mass-analyzed threshold ionization (MATI) spectroscopy and electronic structure calculations. Adiabatic ionization energies (AIEs) of the neutral clusters and vibrational frequencies of the cations were measured accurately for the first time from the MATI spectra. Five possible structural isomers of M3O4 were considered in the calculations and spectral analysis. A cage-like structure in C3v point group was identified as the most stable one. The structure is formed by fusing three M2O2 fragments together, each sharing two O-M bonds with others. The ground electronic state of the neutral clusters is 2A1 with the unpaired electron being largely a metal-based s character. Ionization of the 2A1 state yields a 1A1 ion state in a similar geometry to the neutral cluster. The AIEs of the clusters are 4.4556 (6), 4.0586(6), and 3.4750(6) eV for M = Sc, Y, and La, respectively. The observed vibrational modes of the cations include metal-oxygen stretching, metal triangle breathing, and oxygen-metal-oxygen rocking in the frequency range of 200-800 cm-1.

  17. Electronic Transitions and Spin-Orbit Splitting of Lanthanum Dimer

    NASA Astrophysics Data System (ADS)

    Liu, Yang; Wu, Lu; Zhang, Changhua; Yang, Dong-Sheng

    2011-06-01

    Lanthanum dimer (La_2) was studied by mass-analyzed threshold ionization (MATI) spectroscopy and a series of high-level multi-configuration ab initio calculations (CASSCF, CASPT2, and MRCI). The MATI spectrum exhibits three band systems originating at 39044, 40312, and 40862 Cm-1, respectively. Above the band origin, the first band system displays a vibrational progression of ˜232 Cm-1, and the other two show vibrational progression with the same interval of ˜240 Cm-1. Below the band origin, the three systems exhibit the same vibrational interval of ˜207 Cm-1. These band systems are assigned to three electronic transitions from the ground state of La_2 to the low-lying electronic states of La_2^+: ^2Σ^+_g ← ^1Σ^+_g, ^2Πu,1/2 ← ^1Σ^+_g, and ^2Πu,3/2 ← ^1Σ^+_g. The spin-orbit splitting in the ^2ΠU ion state is 550 Cm-1. In addition, the electronic states and bonding of La_2 will be compared with those of Sc_2 and Y_2.

  18. Mass-Analyzed Threshold Ionization and Structures of M_3C_2(M=Sc, La)

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Mourad, Roudjane; Yang, D. S.

    2011-06-01

    M_3C_2 (M=Sc, La) clusters are produced by laser vaporization in a pulsed metal-cluster source and identified by photoionization mass spectrometry. Vibrationally resolved ion spectra are obtained with mass-analyzed threshold ionization (MATI) spectroscopy. The MATI spectra of M_3C_2 (M=Sc, La) exhibit a weak 0-0 transition, indicating a significant geometry difference between the neutral and ionized clusters. The ionization energies of Sc_2C_2 and La_3C_2 are measured to be 36398 (5) and 30051(5) Cm-1, respectively. In addition, the spectra of the two clusters display a number of vibrational intervals that are associated with M_3 deformations. Preliminary data analysis shows that both clusters have a C2v bi-pyramid structure in the neutral state and a D3h bi-pyramid structure in the ion state, and the spectra may be assigned to the ^1A'_1 (D3h)← ^2B_2 (C2v) transitions.

  19. Pulsed-field ionization spectroscopy of high Rydberg states (n=50-200) of bis(ɛ6-benzene)chromium

    NASA Astrophysics Data System (ADS)

    Choi, Kyo-Won; Choi, Sunyoung; Baek, Sun Jong; Kim, Sang Kyu

    2007-01-01

    The ionization behavior of the high Rydberg states of bis(η6-benzene)chromium in the presence of ac and/or dc fields has been explored. The application of an ac scrambling field at the time of laser excitation lengthens the lifetime of the Rydberg state by almost two orders of magnitude. The lifetime enhancement by the scrambling field is much more effective for n <100 than it is for n >100 Rydberg states. The pulsed-field ionization of Rydberg states of n <100 shows the typical diabatic ionization behavior for low n. The two distinct ionization behaviors observed for the relatively low (n=50-100) and high (n=100-200) Rydberg states suggest that the former originate from the optically accessed nf Rydberg series, whereas the latter are due to np Rydberg series. Based on the understanding of the ionization behavior of bis(η6-benzene)chromium, the accurate ionization potential is deduced to give IP =5.4665±0.0003eV. Optimization of the various electric field conditions greatly enhances the spectral sensitivity of the mass-analyzed threshold ionization (MATI) spectroscopy. The high-resolution MATI spectrum of the title molecule obtained here provides precise cationic vibrational frequencies for many skeletal and benzene ring modes. A number of vibrational modes are newly identified, and the ambiguity regarding to some mode assignments is now clearly resolved through the Frank-Condon analysis based on ab initio calculations.

  20. Vibrational and Geometric Structures of La{_3}C{_2}O and La{_3}C{_2}O^+ from Masse-Analyzed Threshold Ionization

    NASA Astrophysics Data System (ADS)

    Mourad, Roudjane; Wu, Lu; Yang, D. S.

    2011-06-01

    La{_3}C{_2}O is produced for the first time by laser vaporization in a pulsed cluster source and identified by photoionization time-of-flight mass spectrometry. Vibrationally-resolved ion spectra are obtained with mass-analyzed threshold ionization (MATI) spectroscopy. The adiabatic ionization energy of La{_3}C{_2}O is measured to be 30891(5) Cm-1. The spectra display several short vibrational progressions, and these progressions are associated mainly with La-La, La-C and La{_3}C{_2}O stretching excitations. The electron-spin multiplicities and molecular symmetries of La{_3}C{_2}O and La{_3}C{_2}O^+ are determined by combining the experimental measurements with ab initio calculations at MP2 level. Preliminary data analysis shows that the ^1A_1 ← ^2A_1 transition is responsible for the observed MATI spectra. The cluster has C2v symmetry with La{_3}C{_2}O in a bi-pyramid structure and oxygen being attached to the La_3 plane.

  1. Mass-Analyzed Threshold Ionization of Lanthanum Oxide Clusters: La_2O_2 and La_3O_4

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Zhang, Changhua; Krasnokutski, Sergiy; Yang, Dong-Sheng

    2009-06-01

    Lanthanum oxide clusters are produced by laser vaporization in a pulsed cluster source and identified by photoionization mass spectrometry. Vibrationally resolved ion spectra are obtained with mass-analyzed threshold ionization (MATI) spectroscopy. The MATI spectra of La_2O_2 and La_3O_4 exhibit a very strong 0-0 transition, indicating similar geometries for the neutral and ionized clusters and a very weakly bonding or non-bonding electron ejected from an outmost molecular orbital. The ionization energies of La_2O_2 and La_3O_4 are measured to be 36937(5) and 28028(5) cm^{-1}, respectively. In addition, the spectra of both clusters display a number of vibrational intervals that are associated with metal-metal, metal-oxygen, and oxygen-oxygen vibrations. Preliminary data analysis shows that the La_2O_2 cluster has a D_{2h} planar structure and La_3O_4 has a C_{3v} cage-like structure, both with alternating La-O-La bonds. The spectra may be assigned to the ^2Ag←^1Ag transition in the case of La_2O_2 and ^1A_1←^2A_1 in La_3O_4 .

  2. Resonant two-photon ionization and mass-analyzed threshold ionization spectroscopy of the selected rotamers of m-methoxyaniline and o-methoxyaniline

    NASA Astrophysics Data System (ADS)

    Lin, Jung Lee; Huang, Chen-Jso; Lin, Cheng-Huang; Tzeng, Wen Bih

    2007-07-01

    We report the resonant two-photon ionization and mass-analyzed threshold ionization (MATI) spectra of m-methoxyaniline and o-methoxyaniline. The vibronic features of m-methoxyaniline are built on 34308 ± 2 and 34495 ± 2 cm -1 corresponding to the origins of the S 1 ← S 0 electronic transition ( E1's) of the cis and trans rotamers. Analysis of the MATI spectra gives the adiabatic ionization energies (IEs) of 59983 ± 5 and 60879 ± 5 cm -1 for these two species. o-Methoxyaniline is found to have only one stable structure whose E1 and IE are 33875 ± 2 and 58678 ± 5 cm -1, respectively. Most of the active vibrations of m- and o-methoxyaniline in the electronically excited S 1 and cationic ground D 0 states result from the in-plane ring vibrations. Comparing these data with those of p-methoxyaniline allows us to learn about the vicinal substitution effects resulting from the relative locations of the NH 2 and OCH 3 substituents.

  3. K selection in one-photon mass-analyzed threshold ionization of CH3I and CD3I to the X~ 2E3/2 state cations

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Bae, Yong Jin; Kim, Myung Soo

    2008-01-01

    One-photon mass-analyzed threshold ionization (MATI) spectra for the X˜E3/22 states of CH3I+ and CD3I + were measured using vacuum ultraviolet radiation generated by four-wave mixing in Kr. Spin-orbit density functional theory calculations at the B3LYP/aug-cc-pVTZ level and spin-orbit/Jahn-Teller calculations were made to aid vibrational assignment. Each vibrational band consisted of several peaks due to different ΔK transitions, which could be assigned by using molecular parameters determined in the previous high resolution photodissociation spectroscopic study. Possibility of generating mass-selected, vibronically selected and K-selected ion beam with decent intensity by one-photon MATI was demonstrated. The ionization energies to the X˜E3/22 states of CH3I + and CD3I+ corrected for the rotational contribution were 9.5386±0.0006 and 9.5415±0.0006eV, respectively.

  4. Resonant two-photon mass-analyzed threshold ionization spectroscopy of 1-fluoronaphthalene and 2-fluoronaphthalene

    NASA Astrophysics Data System (ADS)

    Tzeng, Sheng Yuan; Wu, Jui Yang; Zhang, Shudong; Tzeng, Wen Bih

    2012-11-01

    We applied the resonant two-photon mass-analyzed threshold ionization (MATI) technique to record the cation spectra of 1-fluoronaphthalene (1FN) and 2-fluoronaphthalene (2FN) by ionizing via several intermediate vibronic states. The adiabatic ionization energies of 1FN and 2FN are found to be 66 194 and 66 771 ± 5 cm-1, respectively. Distinct MATI bands resulting from in-plane ring deformation are found at 437, 517, 703, and 779 cm-1 for 1FN; and 286, 455, 494, 764, and 1031 cm-1 for 2FN. Frequencies of these modes are slightly greater than the corresponding ones in the vibronic spectra. This indicates that the molecular geometry in the cationic D0 state is slightly more rigid than that in the neutral S1 state. Comparing the present experimental data with those of naphthalene suggests that the frequency difference of each mode depends on the vibrational pattern, location of the F atom, and degree of the F atom involved in the overall vibration.

  5. One-photon mass-analyzed threshold ionization spectroscopy of CH2BrI: Extensive bending progression, reduced steric effect, and spin-orbit effect in the cation

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Hyoseok; Lee, Yoon Sup; Kim, Myung Soo

    2005-07-01

    One-photon mass-analyzed threshold ionization (MATI) spectrum of CH2BrI was obtained using coherent vacuum-ultraviolet radiation generated by four-wave difference-frequency mixing in Kr. Unlike CH2ClI investigated previously, a very extensive bending (Br-C-I) progression was observed. Vibrational frequencies of CH2BrI+ were measured from the spectra and the vibrational assignments were made by utilizing frequencies calculated by the density-functional-theory (DFT) method using relativistic effective core potentials with and without the spin-orbit terms. A noticeable spin-orbit effect on the vibrational frequencies was observed from the DFT calculations, even though its influence was not so dramatic as in CH2ClI+. A simple explanation based on the bonding characteristics of the molecular orbitals involved in the ionization is presented to account for the above differences between the MATI spectra of CH2BrI and CH2ClI. The 0-0 band of the CH2BrI spectrum could be identified through the use of combined data from calculations and experiments. The adiabatic ionization energy determined from the position of this band was 9.5944±0.0006eV, which was significantly smaller than the vertical ionization energy reported previously.

  6. Mass-Analyzed Threshold Ionization Spectroscopy and Spin-Orbit Coupling of Cerium-Hydrocarbon Complexes

    NASA Astrophysics Data System (ADS)

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

    2017-06-01

    Ce(C_{2}H_{2}) and Ce(C_{4}H_{6}) are produced by the Ce-mediated ethylene activation and investigated by mass-analyzed threshold ionization (MATI) spectroscopy, isotopic substitutions, and relativistic quantum chemical computations. The MATI spectrum of Ce(C_{2}H_{2}) exhibits two nearly identical band systems separated by 128 \\wn, and that of Ce(C_{4}H_{6}) shows three similar band systems separated by 55 and 105 \\wn. These separations are not affected by deuteration. The observed band systems for the two Ce-hydrocarbon species are attributed to the spin-orbit splitting arising from interactions of triplet and singlet states. Ce(C_{2}H_{2}) is a metallacyclopropene in C_{2v} symmetry, and Ce(C_{4}H_{6}) is a metallacyclopentene in C_{s} symmetry. The low-energy valence electron configurations of the neutral and ionic states of each 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 Ce 5d orbital and a hydrocarbon π* antibonding orbital.

  7. CP violation and the matter-antimatter asymmetry of the Universe

    NASA Astrophysics Data System (ADS)

    Hambye, Thomas

    2012-03-01

    In our everyday environment one observes only matter. That's quite a fortunate situation! Any sizeable presence of antimatter on Earth, from the enormous energy it would release through annihilation with matter, would prevent us talking about it! For the physicist this fact, at first sight obvious, is nevertheless a kind of surprise: antimatter, which is observed in cosmic rays, in radioactive decays of nuclei, which has been copiously produced and extensively studied in accelerators and which is nowadays currently used in hospitals, turns out to have pretty much the same properties as matter. Moreover, the fact that matter dominates appears to be a general property of our Universe: no evidence of large quantities of antimatter has been observed at any distance from us. Why would matter have taken the advantage on antimatter? In this short review we explain how, through a limited number of basic elements, one can find answers to this question. Matter and antimatter have, in fact, not exactly the same properties: from laboratory experiments CP conservation is known not to be a fundamental law of nature. Dans notre vie de tous les jours nous n'appréhendons que de la matière et rien ne nous indique à première vue qu'il puisse exister de l'antimatière. Bienheureux sommes nous ! La présence d'une quelconque quantité macroscopique d'antimatière autour de nous, par l'énergie qu'elle dégagerait en s'annihilant avec la matière, nous empêcherait d'être là pour en parler ! Cet état de chose est cependant une surprise pour le physicien : l'antimatière qui est aujourd'hui bien connue — étant observée et utilisée tous les jours dans les rayons cosmiques, les processus radioactifs, les accélérateurs de particules et les hôpitaux — a des propriétés très similaires à celles de la matière. De plus le fait que la matière domine apparaît être une caractéristique générale de notre univers : aucune trace d'une grande quantité d'antimatière n'a

  8. Diffusion, diffraction des neutrons en temps réel et études réalisées in situ

    NASA Astrophysics Data System (ADS)

    Isnard, O.

    2003-02-01

    La diffusion des neutrons est une technique particulièrement efficace pour l'analyse en temps réel des processus réactionnels dans la matière. La diffraction de neutrons in situ a été développée très tôt sur les sources à haut flux tel que l'Institut Laue Langevin. Ces études nécessitent un flux de neutrons important et un détecteur couvrant un domaine angulaire le plus grand possible. Les neutrons offrent la spécificité d'être très peu absorbés par nombre de matériaux, cette faible absorption fait de la diffusion neutronique un excellent outil pour sonder la matière en volume et de manière non destructive. Cela permet en particulier d'utiliser des environnements d'échantillons complexes tout en conservant un flux raisonnable. La diffusion de neutrons en temps réel est donc très largement utilisée par diverses communautés scientifiques : sciences des matériaux, physiciens, chimistes... L'objet de ce cours est de donner les paramètres importants pour ce type d'étude et d'illustrer le propos à l'aide d'exemples pris dans des domaines scientifiques divers : électrochimie, magnétisme, métallurgie, chimie du solide. Après avoir présenté quelques repères méthodologiques sur les méthodes d'acquisition de données, des exemples montreront le fort potentiel de la diffusion neutronique en temps réel pour l'étude de la matière dans des conditions dynamiques. Enfin, nous donnerons aussi quelques conseils pour la visualisation, le dépouillement et l'analyse de ce type d'expérience. La diffusion des neutrons sur poudre est actuellement très bien adaptée aux études réalisées in situ. Cependant, nous verrons que la faisabilité d'études in situ s'étend à d'autres techniques expérimentales telles que la diffusion des neutrons aux petits angles et même la diffusion sur monocristal qui est en plein renouveau.

  9. Physical Activity Participation and Preferences: Developmental and Oncology-Related Transitions in Adolescents Treated for Cancer.

    PubMed

    Wright, Marilyn

    2015-08-01

    Objet: Décrire la fonction motrice, la participation, les obstacles et les préférences en matière d'activité physique chez les adolescents avant et après un traitement du cancer et discuter de la promotion de l'activité physique dans le contexte des transitions du développement et du cancer. Méthode: Une étude transversale a utilisé les échelles d'autodéclaration et de déclaration par les parents du questionnaire Pediatric Outcomes Data Collection Instrument (PODCI) et des questions sur la participation et les préférences en matière d'activité physique afin de recueillir des données sur la mobilité des transferts, la mobilité de base, le fonctionnement dans les sports et le fonctionnement physique auprès de 80 adolescents et de 63 parents. Résultats: Les résultats du questionnaire PODCI pour les adolescents recevant un traitement étaient plus variables et considérablement plus bas que pour les adolescents qui avaient terminé leur traitement il y a plus de deux ans. La fatigue, la douleur, la santé en général et les recommandations du médecin étaient fréquemment désignées comme étant des obstacles à l'activité physique chez les adolescents qui reçoivent un traitement. Bon nombre d'entre eux n'atteignaient pas les niveaux d'activité physique recommandés. Les adolescents ont exprimé des préférences pour l'activité physique pratiquée avec des amis ou en famille, à la maison ou à l'école, dans l'après-midi ou le soir et dans des loisirs et des sports que les adolescents choisissent habituellement. Conclusions: Les capacités physiques, la participation et les obstacles en matière d'activité physique varient au cours du parcours du cancer. Les interventions devraient tenir compte de la variabilité ainsi que des préférences et des environnements des individus au cours des trajectoires et des transitions du traitement du cancer et du développement du jeune pour que ce dernier puisse adopter de saines habitudes de vie

  10. Facteurs d’ambiance dans l’industrie textile en République Démocratique du Congo: état de lieu

    PubMed Central

    Kitronza, Panda Lukongo; Philippe, Mairiaux

    2016-01-01

    Introduction Ce travail vise à faire une évaluation des nuisances dans le milieu de travail du secteur textile en République Démocratique du Congo. Méthodes Nous avons effectué une étude transversale et analytique. Sur 257 travailleurs sélectionnés par échantillonnage systématique, 229 travailleurs ont été retenus. 223 postes de travail ont fait l'objet de mesures pour le bruit, l'éclairage, et la chaleur. Les informations recueillies l'ont été à partir de la consultation des documents de l'entreprise, de l'interrogatoire mené par questionnaire dirigé portant essentiellement sur les renseignements socio professionnels et par des mesurages. L'analyse descriptive a été faite pour les données sociodémographiques et professionnelles et l'approche analytique pour les mesurages. Résultats Dans cette entreprise 88% des travailleurs sont des ouvriers. Le département de tissage englobe presque 68% des travailleurs. La plupart travaillent en trois pauses (85%). La population d'étude est majoritairement masculine à 85%, vieillissante avec 52% de plus de 40 ans et instruite (80%). Dans l'entreprise, seuls 12,1 % des postes de travail respectent les normes en matière de bruit et 18 % des postes en matière d'éclairage. 94% des postes ne respectent pas les normes en matière de chaleur pour un travail lourd. Conclusion Notre étude a permis de mettre en évidence les nuisances au sein de l'industrie, montrant un écart important par rapport aux normes prescrites pour les nuisances mesurées. Ces résultats est un plaidoyer pour développer des mesures de prévention appropriées. Ils sont à confronter à ceux d'autres études plus approfondies dans ce milieu. PMID:28154733

  11. Conduite automobile et démence

    PubMed Central

    Lee, Linda; Molnar, Frank

    2017-01-01

    Résumé Objectif Fournir aux médecins de première ligne une approche relative aux préoccupations de sécurité au volant lorsque les personnes âgées présentent des troubles de mémoire. Sources d’information L’approche est fondée sur un programme de formation agréé des cliniques de la mémoire, élaboré par la clinique de la mémoire du Centre for Family Medicine. Message principal L’un des aspects les plus difficiles des soins aux personnes atteintes de démence est l’évaluation de la sécurité au volant. Les conducteurs atteints de démence présentent un risque plus élevé de collisions, quoique de nombreux conducteurs dont l’atteinte est légère soient aptes à conduire pendant encore plusieurs années. Puisque l’aptitude à conduire dépend de multiples compétences cognitives et fonctionnelles, de nombreux facteurs entrent en jeu lorsque les cliniciens déterminent si les sujets de préoccupation en matière de cognition se répercutent sur l’aptitude à conduire. Les observations spécifiques tirées de l’anamnèse corroborée et des tests cognitifs effectués en cabinet pourraient aider le médecin à décider s’il doit recommander le patient à un examen pratique complet et aviser les autorités provinciales du transport, conformément aux exigences en matière de déclarations. La communication doit être axée sur le patient et menée avec tact. Conclusion Les médecins de première ligne doivent tenir compte de plusieurs facteurs lorsqu’ils déterminent si les sujets de leurs préoccupations en matière de cognition pourraient se répercuter sur l’aptitude des conducteurs âgés à prendre le volant. PMID:28115452

  12. 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).

  13. VizieR Online Data Catalog: rho Oph proper motions and photometry (Ducourant+, 2017)

    NASA Astrophysics Data System (ADS)

    Ducourant, C.; Teixeira, R.; Krone-Martins, A.; Bontemps, S.; Despois, D.; Galli, P. A. B.; Bouy, H.; Le Campion, J. F.; Rapaport, M.; Cuillandre, J. C.

    2016-09-01

    Tables 6 lists the J,H,Ks photometry for the 68 kinematic members and 14 candidate members of the Rho Ophiuchi core from 2MASS or derived in this work together with the AllWISE (W1,W2,W3,W4) photometry. Column (1) provides identifications of the objects. Columns (2,4,6) presents the J,H,Ks photometry from 2MASS and columns (3,5,7) their associated standard errors; if predeceded by an asterisk the photometry was derived in this work. Columns (8, 10, 12) list AllWISE (w1,w2,w3,w4) photometry unless predeceded by an asterisk (WISE) and columns (9, 11, 13) the associated standard errors. Tables 7 Lists the 68 members and 14 candidate members, their astrometric solution and their membership probability. Column (1) provides identifications of the objects. Columns (2,3) present the J2000 Right ascension and Declination for the mean epochs given in columns (7,8) (in years) and column (4) the mean standard error on position (in mas). Columns (5,6) list the proper motions and internal standard errors (in mas/yr). Column (9) presents the 2MASS Ks photometry (*= this work), column (10) lists the number of different epochs of observations used for the derivation of proper motions, column (11) the time base of these observations and column (12) the membership probability. Tables 8 lists the evolutionary status of the 68 kinematic members and 14 candidate members. Columns (1) and (2) provide identifications of the objects. Column (3) list the (RA,DE) positions extracted from table 7, column (4) (status) lists the young stellar object status as given by CDS-Simbad and Column (5) (Class) the SED class of the object (classes preceded by an asterisk were assigned in this work). The corresponding references are given in Column (6) . In Column (7) we list the spectral type found in the litterature and in Col. (8) the references. Note . a: this object is classified as class II by Bontemps et al. (2001, Cat. J/A+A/372/173) but was classified as class III by our algorithm. b: this object

  14. 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

  15. Magnetic properties of weakly exchange-coupled high spin Co(II) ions in pseudooctahedral coordination evaluated by single crystal X-band EPR spectroscopy and magnetic measurements.

    PubMed

    Neuman, Nicolás I; Winkler, Elín; Peña, Octavio; Passeggi, Mario C G; Rizzi, Alberto C; Brondino, Carlos D

    2014-03-03

    We report single-crystal X-band EPR and magnetic measurements of the coordination polymer catena-(trans-(μ2-fumarato)tetraaquacobalt(II)), 1, and the Co(II)-doped Zn(II) analogue, 2, in different Zn:Co ratios. 1 presents two magnetically inequivalent high spin S = 3/2 Co(II) ions per unit cell, named A and B, in a distorted octahedral environment coordinated to four water oxygen atoms and trans coordinated to two carboxylic oxygen atoms from the fumarate anions, in which the Co(II) ions are linked by hydrogen bonds and fumarate molecules. Magnetic susceptibility and magnetization measurements of 1 indicate weak antiferromagnetic exchange interactions between the S = 3/2 spins of the Co(II) ions in the crystal lattice. Oriented single crystal EPR experiments of 1 and 2 were used to evaluate the molecular g-tensor and the different exchange coupling constants between the Co(II) ions, assuming an effective spin S′= 1/2. Unexpectedly, the eigenvectors of the molecular g-tensor were not lying along any preferential bond direction, indicating that, in high spin Co(II) ions in roughly octahedral geometry with approximately axial EPR signals, the presence of molecular pseudo axes in the metal site does not determine preferential directions for the molecular g-tensor. The EPR experiment and magnetic measurements, together with a theoretical analysis relating the coupling constants obtained from both techniques, allowed us to evaluate selectively the exchange coupling constant associated with hydrogen bonds that connect magnetically inequivalent Co(II) ions (|JAB(1/2)| = 0.055(2) cm(–1)) and the exchange coupling constant associated with a fumarate bridge connecting equivalent Co(II) ions (|JAA(1/2)| ≈ 0.25 (1) cm(–1)), in good agreement with the average J(3/2) value determined from magnetic measurements.

  16. The actual development of European aviation safety requirements in aviation medicine: prospects of future EASA requirements.

    PubMed

    Siedenburg, J

    2009-04-01

    Common Rules for Aviation Safety had been developed under the aegis of the Joint Aviation Authorities in the 1990s. 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 Aviation 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.

  17. 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

  18. 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

  19. VizieR Online Data Catalog: Red giant star sample from SDSS (Chen+, 2014)

    NASA Astrophysics Data System (ADS)

    Chen, Y. Q.; Zhao, G.; Carrell, K.; Zhao, J. K.; Tan, K. F.; Nissen, P. E.; Wei, P.

    2017-05-01

    Based on the SDSS DR9 database, we selected stars with (g-r)0 color in the range of 0.1 to 1.0 mag, and log g less than 3.5 dex for each metallicity bin ranging from [Fe/H]<-3.0 to [Fe/H]=0.0 with a step of 0.2 dex, and obtained their spectra. In the selection and subsequent analysis, stellar parameters (temperature, gravity, and [Fe/H]) are based on the most recent update of the SEGUE Stellar Parameter Pipeline (SSPP; Lee et al. 2008AJ....136.2022L, 2008, J/AJ/136/2050, 2011, J/AJ/141/90; Allende Prieto et al. 2008AJ....136.2070A; Smolinski et al. 2011, J/AJ/141/89). As described in Ahn et al. (2012ApJS..203...21A), the updated SSPP adopts a much-improved color-temperature relation from the InfraRed Flux Method Casagrande et al. (2010, J/A+A/512/A54), and the estimates of surface gravity and metallicity have been thoroughly recalibrated based on results from high-resolution observations. An estimate of the internal uncertainties of the SSPP is ~50 K for Teff, ~0.12 dex for log g, and ~0.10 dex for [Fe/H]. In order to avoid early-type stars, we limit the stars to have SSPP temperatures from 3000 K to 10000 K and a signal-to-noise ratio larger than 10. (1 data file).

  20. Aircraft crew radiation workplaces: comparison of measured and calculated ambient dose equivalent rate data using the EURADOS in-flight radiation data base.

    PubMed

    Beck, Peter; Bartlett, David; Lindborg, Lennart; McAulay, Ian; Schnuer, Klaus; Schraube, Hans; Spurny, Frantisek

    2006-01-01

    In May 2000, the chairman of the European Radiation Dosimetry Group (EURADOS) invited a number of experts with experience of cosmic radiation dosimetry to form a working group (WG 5) on aircraft crew dosimetry. Three observers from the Article 31 Group of Experts as well as one observer from the Joint Aviation Authorities (JAA) were also appointed. The European Commission funded the meetings. Full meetings were organised in January 2001 and in November 2001. An editorial group, who are the authors of this publication, started late in 2002 to finalise a draft report, which was submitted to the Article 31 Group of Experts in June 2003. The methods and data reported are the product of the work of 26 research institutes from the EU, USA and Canada. Some of the work was supported by contracts with the European Commission, Directorate General XII, Science, Research and Development. A first overview of the EC report was published late in 2004. In this publication we focus on a comparison of measured and calculated ambient dose rate data using the EURADOS In-Flight Data Base. The evaluation of results obtained by different methods and groups, and comparison of measurement results and the results of calculations were performed in terms of the operational quantity ambient dose equivalent, H*(10). Aspects of measurement uncertainty are reported also. The paper discusses the estimation of annual doses for given flight hours and gives an outline of further research needed in the field of aircraft crew dosimetry, such as the influence of solar particle events.

  1. VizieR Online Data Catalog: Galaxy clusters in the 4 CFHTLS Wide fields (Durret+, 2011)

    NASA Astrophysics Data System (ADS)

    Durret, F.; Adami, C.; Cappi, A.; Maurogordato, S.; Marquez, I.; Ilbert, O.; Coupon, J.; Arnouts, S.; Benoist, C.; Blaizot, J.; Edorh, T. M.; Garilli, B.; Guennou, L.; Le Brun, V.; Le Fevre, O.; Mazure, A.; McCracken, H. J.; Mellier, Y.; Mezrag, C.; Slezak, E.; Tresse, L.; Ulmer, M. P.

    2011-09-01

    We have developed a method for detecting clusters in large imaging surveys, based on the detection of structures in galaxy density maps made in slices of photometric redshifts. This method was first applied to the Canada France Hawaii Telescope Legacy Survey (CFHTLS) Deep 1 field by Mazure et al. (2007A&A...467...49M), then to all the Deep and Wide CFHTLS fields available in the T0004 data release by Adami et al. (2010, Cat. J/A+A/509/81). The validity of the cluster detection rate was estimated by applying the same procedure to galaxies from the Millennium simulation. Here we analyse with the same method the full CFHTLS Wide survey, based on the T0006 data release. In a total area of 154deg2, we have detected 4061 candidate clusters at 3sigma or above (6802 at 2sigma and above), in the redshift range 0.1<=z<=1.15, with estimated mean masses between 1.3x1014 and 12.6x1014M⊙. We compare our detections with those made in various CFHTLS analyses with other methods. By stacking a subsample of clusters, we show that this subsample has typical cluster characteristics (colour-magnitude relation, galaxy luminosity function). We also confirm that the cluster-cluster correlation function is comparable to that obtained for other cluster surveys and analyze large scale filamentary galaxy distributions. We have increased the number of known optical high redshift cluster candidates by a large factor, an important step towards obtaining reliable cluster counts to measure cosmological parameters. The clusters that we detect behave as expected for a sample of clusters fed by filaments at the intersection of which they are located. (4 data files).

  2. VizieR Online Data Catalog: MOJAVE. XI. Spectral distributions (Hovatta+, 2014)

    NASA Astrophysics Data System (ADS)

    Hovatta, T.; Aller, M. F.; Aller, H. D.; Clausen-Brown, E.; Homan, D. C.; Kovalev, Yu. Y.; Lister, M. L.; Pushkarev, A. B.; Savolainen, T.

    2014-10-01

    MOJAVE (Monitoring of Jets in Active galactic nuclei with VLBA Experiments) is an observing program to monitor the changes in a large sample of parsec-scale AGN jets in total intensity and polarization at 15.4GHz with the VLBA (Paper V, Lister et al. 2009, cat. J/AJ/137/3718). In 2006, the monitoring was expanded to include multifrequency observations at 8.1, 8.4, 12.1, and 15.4GHz. Altogether 191 sources were observed (twenty of them twice) in batches distributed over 12 epochs. Our sample includes 133 flat-spectrum radio quasars (hereafter quasars), 33 BL Lac objects, 21 radio galaxies, and 4 optically unidentified objects. In addition to studying the spectral index distribution, these data were used to study Faraday rotation in these sources (Paper VIII, Hovatta et al. 2012, cat. J/AJ/144/105) and the frequency-dependent shift of the optically thick base of the jet, the "core-shift" effect (Paper IX, Pushkarev et al. 2012, cat. J/A+A/545/A113). The observations were made in dual polarization mode using frequencies centered at 8.104, 8.424, 12.119, and 15.369GHz. The bandwidths were 16 and 32MHz for the X and U bands, respectively. The observations were recorded with a bit rate of 128Mbits/s. In the 8GHz bands the observations consist of 2 sub-bands in both frequencies and 4 sub-bands in the 12 and 15GHz bands. All ten VLBA antennas were observing except at epoch 2006 August 9 when Pie Town was not included. The sources and their observing epochs are listed in Table1. (2 data files).

  3. 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).

  4. 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

  5. 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

  6. 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).

  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. VizieR Online Data Catalog: ROSAT detected quasars. II. (Yuan+ 1998)

    NASA Astrophysics Data System (ADS)

    Yuan, W.; Brinkmann, W.; Siebert, J.; Voges, W.

    1997-11-01

    We have compiled a sample of all radio-quiet quasars or quasars without radio detection from the Veron-Cetty - Veron catalogue (1993, VV93, Cat. ) detected by ROSAT in the ALL-SKY SURVEY (RASS, Voges 1992, in Proc. of the ISY Conference `Space Science', ESA ISY-3, ESA Publications, p.9, See Cat. ), as targets of pointed observations, or as serendipitous sources from pointed observations publicly available from the ROSAT point source catalogue (ROSAT-SRC, Voges et al. 1995, Cat. ). For all sources we used the results of the Standard Analysis Software System (SASS, Voges et al. 1992, in Proc. of the ISY Conference `Space Science', ESA ISY-3, ESA Publications, p.223), employing the most recent processing for the Survey data (RASS-II, Voges et al. 1996, Cat. ). The total number of quasars is 846. 69 of the radio-quiet objects with radio detections have already been presented in a previous paper (Brinkmann, Yuan, & Siebert 1997, Cat. <J/A+A/319/413>) using the RASS-I results. 17 objects were found to be radio-loud from recent radio surveys and were marked in the table. When available, the power law photon indices and the corresponding absorption column densities (NH) were estimated from the two hardness ratios given by the SASS, both with free fitted NH and for Galactic absorption. The unabsorbed X-ray flux densities in the ROSAT band (0.1-2.4keV) were calculated from the count rates using the energy to counts conversion factor for power law spectra and Galactic absorption. As the photon index we used the value obtained for the individual source if the estimated 1-σ error is smaller than 0.5, otherwise we used the redshift-dependent mean value (see the paper for details). (1 data file).

  9. Size-dependent structural, magnetic, and optical properties of MnCo2O4 nanocrystallites

    NASA Astrophysics Data System (ADS)

    Singh, S.; Pramanik, P.; Sangaraju, S.; Mallick, A.; Giebeler, L.; Thota, S.

    2017-05-01

    Finite-size (d = 5.4-112 nm) and surface effects on the structural, optical, and magnetic properties of ferrimagnetic inverse-spinel MnCo2O4 are reported. For d ≥ 87 nm, partial tetragonal distortion of the inverse spinel-lattice was observed. The Curie temperature TC of MnCo2O4 nanostructures, as determined by dc-magnetic susceptibility (χ) measurements, follows a finite-size scaling relation TC(d) = TC(∞)[1-(ξ0/d)λ] with a shift exponent λ = 0.75 ± 0.15 and microscopic correlation length ξ0 = 1.4 ± 0.3 nm, which is consistent with the mean field theory. For T > TC, χ(T) fits Néel's expression for the two-sublattice model with antiferromagnetic molecular field (exchange) constants NBB ˜ 85.16 (JBB ˜ 2.94 × 10-22 J), NAB ˜ 110.96 (JAB ˜ 1.91 × 10-22 J), and NAA ˜ 43.8 (JAA ˜ 1.13 × 10-22 J) and asymptotic Curie temperature Ta ˜ 717.63 K. The optical energy bandgap Eg, evaluated from the Kubelka-Munk function ( [ F ( R ∞ ) ℏ ω ] 2 = C2( ℏ ω - Eg)) is blueshifted to 2.4 eV (d ˜ 5.4 nm) from 1.73 eV (d ˜ 112 nm) due to the quantum confinement and non-stoichiometry. The role of tetragonal distortion and grain-size-effects in the intensity of crystal field transitions and variation in the magnetic ordering are further discussed and compared with Co3O4 nanostructures.

  10. VizieR Online Data Catalog: Unidentified γ-ray sources. III. Radio (Massaro+, 2013)

    NASA Astrophysics Data System (ADS)

    Massaro, F.; D'Abrusco, R.; Giroletti, M.; Paggi, A.; Masetti, N.; Tosti, G.; Nori, M.; Funk, S.

    2013-08-01

    About one-third of the γ-ray sources listed in the second Fermi Large Area Telescope catalog (2FGL) have no firmly established counterpart at lower energies and so are classified as unidentified γ-ray sources (UGSs). Here, we propose a new approach to find candidate counterparts for the UGSs based on the 325 MHz radio survey performed with the Westerbork Synthesis Radio Telescope in the northern hemisphere. First, we investigate the low-frequency radio properties of blazars, the largest known population of γ-ray sources; then we search for sources with similar radio properties combining the information derived from the Westerbork Northern Sky Survey (WENSS, Rengelink et al. 1997, Cat. J/A+AS/124/259; superseded by Cat. VIII/62) with those of the NRAO Very Large Array Sky Survey (NVSS, Condon et al. 1998, Cat. VIII/65). We present a list of candidate counterparts for 32 UGSs with at least one counterpart in the WENSS. We also performed an extensive research in the literature to look for infrared and optical counterparts of the γ-ray blazar candidates selected using the low-frequency radio observations to confirm their nature. On the basis of our multifrequency research, we identify 23 new γ-ray blazar candidates out of the 32 UGSs investigated. Comparison with previous results on the UGSs is also presented. Finally, we speculate on the advantages of using low-frequency radio observations to associate UGSs and to search for γ-ray pulsar candidates. (1 data file).

  11. 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).

  12. 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).

  13. VizieR Online Data Catalog: WISE photometry of dust-free stellar systems (Norris+, 2014)

    NASA Astrophysics Data System (ADS)

    Norris, M. A.; Meidt, S.; van de Ven, G.; Schinnerer, E.; Groves, B.; Querejeta, M.

    2016-06-01

    We selected an initial sample of Milky Way (MW) Globular Clusters (GCs) drawn from the Harris catalog (1996AJ....112.1487H, 2010 edition) supplemented with a sample of Large and Small Magellanic Cloud GCs drawn from McLaughlin & van der Marel (2005, Cat. J/ApJS/161/304). To augment the MW GC sample we also make use of WISE photometry of spectroscopically confirmed M31 GCs drawn from the Revised Bologna Catalog of M31 GCs (RBC; Galleti et al. 2004A&A...416..917G). To the RBC we add additional age and metallicity measurements from the literature (Ma et al. 2009AJ....137.4884M; Wang et al. 2010, J/AJ/139/1438; Caldwell et al. 2011, J/AJ/141/61 ; Cezario et al. 2013, J/A+A/549/A60) to produce the largest possible catalog of spectroscopically confirmed M31 GCs with stellar population measurements. In addition to the GC samples we also examine the WISE colors of early-type galaxies (ETGs). Our main ETG sample is that of the SAURON survey (de Zeeuw et al. 2002MNRAS.329..513D). We also added additional dwarf and giant ETGs using derived properties provided in the papers of Michielsen et al. (2008MNRAS.385.1374M), Koleva et al. (2011MNRAS.417.1643K), and Forbes et al. (2011MNRAS.413.2665F). Finally, we added higher-mass ETGs from the study of Denicolo et al. (2005MNRAS.358..813D). (1 data file).

  14. VizieR Online Data Catalog: JMDC : JMMC Measured Stellar Diameters Catalogue (Duvert, 2016)

    NASA Astrophysics Data System (ADS)

    Duvert, G.

    2016-11-01

    Several star diameter compilations exist that contain a fair amount of stellar angular diameter measurements. The CADARS (2011, Cat. II/224) has entries for 6888 stars and claims completeness up to 1997. CHARM2 (2005, Cat. J/A+A/431/773) lists 8231 measurements of 3243 stars, up to 2005. However all these catalogs mix results from very direct methods, such as intensity interferometry, with indirect methods, or spectrophotometric estimates of various kind (always including some model of the star), or linear diameters from eclipsing binaries (1600 entries in CADARS), which need some modelling of the two stars, as well as a good estimate of the distance to be converted into an angular diameter. In contrary, the present catalogue, called JMDC (for JMMC Measured stellar Diameters Catalog) is focussed on direct methods only, and selects only one value of the uniform-disk diameter (UDD) and limb-darkened diameter (LDD) for each historical measurement. It should be regularly updated via a specialized submission tool that will be made available on the JMMC website (www.jmmc.fr). The current version gathers 1239 measurements that have been published since the first experiments by Michelson. Prior to 1997, our bibliography relies only on the reference list of CADARS, carefully reviewed. After this date we used NASA's ADS hosted at CDS. We retained only the measurements obtained from visible/IR interferometry, intensity interferometry and lunar occultation in the database. We always retrieved the values in the original text and used SIMBAD to properly and uniquely identify the stars. The three techniques retained share the same method of converting the measurements (squared visibilities for optical interferometry, correlation of photon-counts for intensity interferometry, fast photometry for lunar occultations) into an angular diameter: fitting a geometrical function into the values, in many cases a uniform disk, which provides a uniform disk diameter (UDD) value. This UDD is

  15. 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).

  16. The Science of and Advanced Technology for Cost-Effective Manufacture of High Precision Engineering Products. Volume 6. Accuracy Improvement of a CNC Machining Center by Using a Touch Probe and a Metrology Pallet.

    DTIC Science & Technology

    1986-11-01

    xo,yo, zo,errorxo,erroryo,errorzo real mat, transmat , fainv,errorx,errory,errorz ,c real cerrorx,cerrory,cerrorz integer np,ia,m,n, iainv,ier,nl...34 dimension s(IO0),wk(100) dimension mat(100,50) , transmat (50,100),fainv(50,100) ,c(50) double precision a(13,13), ainv(13,13) o pen( uni t=3 , f ile...a t(i+ 2 ,12) =x(j) - xo mat(i+2,13) =0. 200 continue c calculate the transposition of a matrix mat(np*3,np2) do 210 i1l,np*3 do 210 j1l,np2 transmat

  17. 25th Birthday Cern- Restaurant

    SciTech Connect

    2006-05-05

    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.

  18. Determination of tributyltin (TBT) in marine sediment using pressurised liquid extraction-gas chromatography-isotope dilution mass spectrometry (PLE-GC-IDMS) with a hexane-tropolone mixture.

    PubMed

    Konieczka, Piotr; Sejerøe-Olsen, Berit; Linsinger, Thomas P J; Schimmel, Heinz

    2007-06-01

    Extraction conditions for the determination of tributyltin (TBT) in sediment samples have been developed further. The analytical procedure is based on spiking with isotopically labelled analyte, pressurised liquid extraction (PLE) with a hexane/tropolone mixture, Grignard derivatization and quantification by GC-MS. It was applied to two unknown sediment samples as part of an intercomparison exercise of the Comité Consultatif pour la Quantité de Matière (CCQM). The detection limit was approximately 1.5 ng/g TBT as Sn, while the repeatability and intermediate precision (as the coefficient of variation) were 1.9% and 3.2%, respectively. The expanded uncertainty was 6.2% (coverage factor k = 2), and the accuracy was confirmed by measurement of a certified reference material.

  19. High accuracy determination of malachite green and leucomalachite green in salmon tissue by exact matching isotope dilution mass spectrometry.

    PubMed

    Hall, Zoe; Hopley, Chris; O'Connor, Gavin

    2008-10-15

    A high accuracy method for the quantification of malachite green (MG) and leucomalachite green (LMG) in salmon is described. Analytical challenges including the effects of analyte instability and matrix suppression were minimised by the use of exact matching isotope dilution mass spectrometry. The developed method included overnight extraction in acidified acetonitrile/ammonium acetate buffer and analysis by LC-MS/MS utilising isotopic internal standards. This method was used to determine the level of MG and LMG in a sample of salmon used in an international inter-comparison organised by the Comité Consultatif pour la Quantité de Matière (CCQM). The sum of MG and LMG was found to be 9.32+/-0.98ngg(-1) at the 95% confidence interval (relative expanded uncertainty 10.5% (k=2)). This encompassed the mean and median of the CCQM inter-comparison.

  20. 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.

  1. Aromatic pi-pi interaction mediated by a metal atom: structure and ionization of the bis(eta(6)-benzene)chromium-benzene cluster.

    PubMed

    Han, Songhee; Singh, N Jiten; Kang, Tae Yeon; Choi, Kyo-Won; Choi, Sunyoung; Baek, Sun Jong; Kim, Kwang S; Kim, Sang Kyu

    2010-07-21

    Aromatic pi-pi interaction in the presence of a metal atom has been investigated experimentally and theoretically with the model system of bis(eta(6)-benzene)chromium-benzene cluster (Cr(Bz)(2)-Bz) in which a free solvating benzene is non-covalently attached to the benzene moiety of Cr(Bz)(2). One-photon mass-analyzed threshold ionization (MATI) spectroscopy and first principles calculations are employed to identify the structure of Cr(Bz)(2)-Bz which adopts the parallel-displaced configuration. The decrease in ionization potential for Cr(Bz)(2)-Bz compared with Cr(Bz)(2), resulting from the increase of the cation-pi stabilization energy upon ionization, is consistent with the parallel-displaced structure of the cluster. Theoretical calculations give the detailed cluster structures with associated energetics, thus revealing the nature of pi-pi-metal or pi-pi-cation interactions at the molecular level.

  2. L'astronomie dans le monde

    NASA Astrophysics Data System (ADS)

    Manfroid, J.

    2003-09-01

    Système solaire poussiéreux; Combien d'étoiles dans le ciel?; Distance d'un pulsar; Planètes poussières et métaux; Un amateur belge bat les professionnels; Matière sombre; Supernova asymétrique; Anneau liégeois; Amas globulaires; Amas globulaires vagabonds; Baptême de satellites; Champ de gravité terrestre; Début de l'univers; XMM et Geminga; Carte neutrinos du ciel; Galaxies et trous noirs; Univers X; SMART-1: signal de départ pour l'aventure lunaire; Les saisons de Pluton; Planète dans M4; Rotation des pulsars; Un jumeau de Jupiter?; Le satellite ISO; Mars Express~:dernier clin d'oeil à la Terre; Waterworld: une réalité?

  3. Signature spectrale des grains interstellaires.

    NASA Astrophysics Data System (ADS)

    Léger, A.

    Notre connaissance de la nature des grains interstellaires reposait sur un nombre très restreint de signatures spectrales dans la courbe d'extinction du milieu interstellaire. Une information considérable est contenue dans les 40 bandes interstellaires diffuses dans le visible, mais reste inexploitée. L'interprétation récente des cinq bandes IR en émission, en terme de molécules d'hydrocarbures aromatiques polycycliques, est développée. Elle permet l'utilisation d'une information spectroscopique comparable, à elle seule, à ce sur quoi était basée jusqu'alors notre connaissance de la matière interstellaire condensée. Différentes implications de cette mise en évidence sont proposées.

  4. Si vous pensez que c'est juste un mal de jambe… détrompez-vous: ce que les leaders en santé doivent savoir sur la maladie artérielle périphérique.

    PubMed

    Papia, Giuseppe; Mayer, Perry; Kelton, David; Queen, Douglas; Elliott, James A; Kuhnke, Janet L

    2015-11-01

    Environ 800 000 Canadiens ont une maladie artérielle périphérique (MAP), une cause majeure d'amputation. Pourtant, le public et les cliniciens connaissent très peu cette maladie. Le présent article traite de la campagne de sensibilisation Si vous pensez que c'est juste un mal de jambe… détrompez-vous que l'Association canadienne du soin des plaies a lancée pour contrer cette tendance. Il porte également sur les facteurs de risque et le dépistage de la MAP, son lien avec le diabète, son traitement et ses soins, ses innovations en matière de soins de la MAP et la nécessité de faire preuve de leadership sur le plan des politiques. © 2015 Collège canadien des leaders en santé

  5. Penetration Performance of Tungsten Alloy Penetrators with L/D Ratios of 1 to 1/32

    DTIC Science & Technology

    1991-06-01

    mati -1 mat2 -2 aneos -1 iron rhug=-I thug=-1 aneosi 1 -1 7.86 0. 0. 4.5e5 1.69 0. aneosi 3.1416 0. -1, -7.36e10 0. 0. 0. aneosi 0. 0. 0. 0. 0. 0. 0...1.27 y2 0.0 endinsert endpackage endblock endinsertion edit blor,k 1 63 expanded endblock endedit eos numn 2 mat! -1 mat2 -2 aneos -1 iron rhUg=-1...endinsertion edit block 1 expanded 69 endbldck endedit eos num 2 mat1 -1 mat2 -2 aneos -1 iron rhug=-I thug=-1 aneosi 1 -1 7.86 0. 0. 4.5e5 1.69 0. aneosi

  6. 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.

  7. Study of the upper spin--orbit state of the chloroiodomethane cation by mass-analyzed threshold ionization

    NASA Astrophysics Data System (ADS)

    Lee, Mina; Kim, Myung Soo

    2006-11-01

    The vibrational spectrum of CH 2ClI + in the upper spin-orbit state was obtained by one-photon mass-analyzed threshold ionization (MATI) spectrometry. The accurate ionization energy of the upper spin-orbit state was determined to be 10.3045 ± 0.0006 eV. The energy gap between the upper and lower spin-orbit states was 0.5539 ± 0.0012 eV. The frequency of the Cl-C-I bending mode was found to be most affected by the spin-orbit interaction. This suggests that the avoided crossing between the lower and upper spin-orbit states occurs along a direction close to the Cl-C-I bending coordinate.

  8. ION PAIR DISSOCIATION: Spectroscopy and Dynamics

    NASA Astrophysics Data System (ADS)

    Suits, Arthur G.; Hepburn, John W.

    2006-05-01

    Ion pair dissociation processes may be studied using coherent vacuum ultraviolet laser sources in a manner entirely analogous to photoelectron spectroscopy, albeit with the anion playing the role of a heavy electron. If the excitation energy is above the dissociation energy and the kinetic energy of the fragment is measured using ion imaging, this approach is termed ion pair imaging spectroscopy (IPIS) and is related to conventional photoelectron spectroscopy. If the excitation energy is just below the dissociation energy and pulsed-field dissociation is employed, this approach is analogous to mass analyzed threshold ionization (MATI) spectroscopy and is termed threshold ion pair production spectroscopy (TIPPS). These approaches provide a novel means of investigating ion thermochemistry and spectroscopy and superexcited state decay dynamics at high resolution.

  9. 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.

  10. Mass analyzed threshold ionization spectroscopy of p -aminophenol cation and the substitution effect

    NASA Astrophysics Data System (ADS)

    Xie, Yan; Lin, Jung Lee; Tzeng, Wen Bih

    2004-10-01

    The mass analyzed threshold ionization (MATI) spectra of p-aminophenol have been recorded by ionizing via the vibrationless 0 0 and vibrational 6a 1, 12 1, and 1 1 levels in the S 1 state. The adiabatic ionization energy (IE) of this molecule is determined to be 58,822 ± 5 cm -1. The frequencies of ring vibrational modes 6a, 12, 1, and 18b of the cation are measured to be 458, 768, 835, and 1181 cm -1, respectively. Comparing these new data of p-aminophenol with those of several p-substituted anilines and p-substituted phenols leads to a better understanding about the substitution effects on the IE as well as the cation vibration.

  11. Mass analyzed threshold ionization spectroscopy of p-fluorostyrene

    NASA Astrophysics Data System (ADS)

    Georgiev, S.; Neusser, H. J.; Chakraborty, Tapas

    2004-05-01

    Adiabatic ionization energy (AIE) and two-color threshold ion vibrational spectra of p-fluorostyrene have been measured by mass analyzed threshold ionization (MATI) method via three different intermediate levels in the first excited state, vibrationless S1 origin, 421411, and 231 vibronic levels. Features of the ion vibrational spectra indicates that the geometry of the molecular ion including the conformation of the vinyl chain in the ionic ground state (D0) is almost identical to that of its neutral ground state (S0), and ionization has very little effect on the vibrational potentials of the aromatic ring modes. Comparison of the AIE with the reported value of styrene shows that fluorination at the para position of the aromatic ring has little effect on energy of the electron ejected in ionization process from the styrene chromophore.

  12. Vacuum ultraviolet mass-analyzed threshold ionization spectroscopy of hexafluorobenzene: The Jahn-Teller effect and vibrational analysis

    NASA Astrophysics Data System (ADS)

    Kwon, Chan Ho; Kim, Myung Soo

    2004-06-01

    One-photon mass-analyzed threshold ionization (MATI) spectrum of hexafluorobenzene was obtained by using vacuum ultraviolet radiation generated by four-wave difference frequency mixing in Kr. The ionization energy of hexafluorobenzene determined from the position of the 0-0 band was 9.9108±0.0006 eV. To aid the spectral analysis, the Jahn-Teller coupling parameters for four e2g modes of C6F6+ in the ground electronic state were calculated from the topographical data of the potential energy surface obtained at the density functional theory (DFT) level. These were used in the initial calculation of the energies of the Jahn-Teller states and upgraded through the multimode fit to the experimental data. Excellent agreement between the experimental and calculated frequencies was achieved. The vibrations which are not linear Jahn-Teller active were observed and could be assigned by referring to the frequencies obtained at the DFT level.

  13. 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.

  14. 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.

  15. Mass Analyzed Threshold Ionization of Lutetium Dimer

    NASA Astrophysics Data System (ADS)

    Wu, Lu; Roudjane, Mourad; Liu, Yang; Yang, Dong-Sheng

    2013-06-01

    Lu_2 is produced in a pulsed laser-vaporization metal-cluster source and studied by mass-analyzed threshold ionization (MATI) spectroscopy. The MATI spectrum displays several long progressions from the transitions between various vibrational levels of the neutral and ion electronic states. From the spectrum, the upper limit of the ionization energy of the dimer is determined to be 43996 cm^{-1}, and the vibrational frequencies are measured to be 121 cm^{-1} in the neutral state and 90 cm^{-1} in the ion state. By combining with ab initio calculations at CASPT2 level, the ground state of Lu_2 is identified as ^3Σ_g^-. The ^3Σ_g^- state has an electron configuration of 6sσ_g^25dπ_u^15dπ_u^16sσ_u^2, which is formed by the interactions of two Lu atoms in the ^2D(5d6s^2) ground state. Ionization of the neutral state removes a 5dπ_u bonding electron and yields a ion state with a considerably longer bond distance. Lu_2 has a very different bonding feature from La_2, for which a ^1Σ_g^+ ground state was previously identified with an electron configuration of 5dπ_u^46sσ_g^2 formed by the interactions of two La atoms in the ^4F(5d^26s) excited state. Yang Liu, Lu Wu, Chang-Hua Zhang, Serge A. Krasnokutski, and Dong-Sheng Yang, J. Chem. Phys. 135, 034309 (2011).

  16. Ce-PROMOTED Bond Activation of Propene Probed by Mass-Analyzed Threshold Ionization Spectroscopy

    NASA Astrophysics Data System (ADS)

    Zhang, Yuchen; Kumari, Sudesh; Yang, Dong-Sheng

    2016-06-01

    The reaction of Ce + propene (CH2=CH-CH3) was carried out in a laser-ablation supersonic molecular beam source. CeC_2H_2, CeC_3H_4, CeC_3H_6, CeC_4H_6, CeC_6H10, and CeC_6H12 were identified by photoionization time-of-flight mass spectrometric measurements, and their structures and electronic states were investigated with mass-analyzed threshold ionization (MATI) spectroscopy and theoretical calculations. The metal complexes containing two or three carbon atoms were formed by the C-C bond breakage (CeC_2H_2), dehydrogenation (CeC_3H_4), or metal insertion into a C-H bond (CeC_3H_6) of a propene molecule. The larger complexes with four to six carbons are formed through secondary reactions involving C-C bond coupling and dehydrogenation. The ground electronic states of the neutral CeC_2H_2, CeC_3H_4, CeC_3H_6, and CeC_4H_6 complexes are triplets with a 4f16s1 electron configuration on the Ce center, and those of the corresponding ions are doublet with a 4f1 configuration. Their MATI spectra are much more complex than those of the corresponding La species formed in the La + propene reaction previously observed by our group. The spectral complexity arises from possibly multiple electronic transitions due to the existence of a 4f electron of the Ce atom which could be located in any one of the seven f-atomic orbitals or involved in considerable spin-orbit interactions.

  17. 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.

  18. 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}.

  19. 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.

  20. 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.

  1. Anthropic influences on the sedimentation rates of lakes situated in different geographic areas.

    PubMed

    Simon, Hedvig; Kelemen, Szabolcs; Begy, Róbert-Csaba

    2017-07-01

    The aim of this study is to determine the effects of natural and anthropic events occurring in the last 30 years in the catchment areas of four Romanian lakes (St. Anna Lake, Red Lake, Vârşolţ Lake and Matiţa Lake) originating from four different geomorphologic areas. A total of eleven sediment cores have been processed for age and sedimentation rate determination using the (210)Pb dating method. Total (210)Pb was measured via alpha spectrometry by (210)Po using PIPS detectors, while supported (210)Pb was measured by (226)Ra using HPGe detectors. Ages and sedimentation rates were calculated using the CRS model. The values of the sedimentation rates have grown multiply in the last three decades: 2.66 times in case of the St. Anna Lake (from 0.06 ± 0.01 g/cm(2)y to 0.16 ± 0.02 g/cm(2)y), up to 6.72 times in case of Red Lake (0.36 ± 0.04 g/cm(2)y to 2.42 ± 0.36 g/cm(2)y), 4.02 times in case of Vârşolţ Lake (04 g/cm(2)y to 1.53 ± 0.18 g/cm(2)y) and up to 16.18 times in case of Matiţa Lake (0.27 ± 0.03 g/cm(2)y to 4.37 ± 0.32). Copyright © 2016 Elsevier Ltd. All rights reserved.

  2. Lanthanum-mediated dehydrogenation of 1- and 2-butynes: Spectroscopy and formation of La(C4H4) isomers

    NASA Astrophysics Data System (ADS)

    Cao, Wenjin; Hewage, Dilrukshi; Yang, Dong-Sheng

    2017-08-01

    La atom reactions with 1-butyne and 2-butyne are carried out in a laser-vaporization molecular beam source. Both reactions yield the same La-hydrocarbon products from the dehydrogenation and carbon-carbon bond cleavage and coupling of the butynes. The dehydrogenated species La(C4H4) is characterized with mass-analyzed threshold ionization (MATI) spectroscopy and quantum chemical computations. The MATI spectra of La(C4H4) produced from the two reactions exhibit two identical transitions, each consisting of a strong origin band and several vibrational intervals. The two transitions are assigned to the ionization of two isomers: La(η4-CH2CCCH2) (Iso A) and La(η4-CH2CHCCH) (Iso B). The ground electronic states are 2A1 (C2v) for Iso A and 2A (C1) for Iso B. The ionization of the doublet state of each isomer removes a La 6s-based electron and results in a 1A1 ion of Iso A and a 1A ion of Iso B. The formation of Iso A from 2-butyne and Iso B from 1-butyne involves the addition of La to the C≡C triple bond, the activation of two C(sp3)-H bonds, and concerted elimination of a H2 molecule. The formation of Iso A from 1-butyne and Iso B from 2-butyne involves the isomerization of the two butynes to 1,2-butadiene in addition to the concerted H2 elimination.

  3. Electronic states and spin-orbit splitting of lanthanum dimer

    NASA Astrophysics Data System (ADS)

    Liu, Yang; Wu, Lu; Zhang, Chang-Hua; Krasnokutski, Serge A.; Yang, Dong-Sheng

    2011-07-01

    Lanthanum dimer (La2) was studied by mass-analyzed threshold ionization (MATI) spectroscopy and a series of multi-configuration ab initio calculations. The MATI spectrum exhibits three band systems originating from ionization of the neutral ground electronic state, and each system shows vibrational frequencies of the neutral molecule and singly charged cation. The three ionization processes are La2+ (a2∑g+) ← La2 (X1∑g+), La2+ (b2Π3/2, u) ← La2 (X1∑g+), and La2+ (b2Π1/2, u) ← La2 (X1∑g+), with the ionization energies of 39 046, 40 314, and 40 864 cm-1, respectively. The vibrational frequency of the X1Σg+ state is 207 cm-1, and those of the a2Σg+, b2Π3/2, u and b2Π1/2, u are 235.7, 242.2, and 240 cm-1. While X1Σg+ is the ground state of the neutral molecule, a2Σg+ and b2Πu are calculated to be the excited states of the cation. The spin-orbit splitting in the b2Πu ion is 550 cm-1. An X4Σg- state of La2+ was predicted by theory, but not observed by the experiment. The determination of a singlet ground state of La2 shows that lanthanum behaves differently from scandium and yttrium.

  4. Threshold ionization, structural isomers, and electronic states of M2O2 (M = Sc, Y, and La)

    NASA Astrophysics Data System (ADS)

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

    2014-06-01

    M2O2 (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 M2O2 were considered in the calculations and the three converged structures were used in the spectral analysis. A planar cyclic structure in D2h 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 MO2 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 Sc2O2 is 1Ag, and those of Y2O2 and La2O2 are 3B1u. Ionization of both 1Ag and 3B1u neutral states yields the 2Ag 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-1.

  5. 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.

  6. Rotationally resolved spectroscopy of the A~ 2A1<--X~ 2B1 transition of H2S+ above the barrier to linearity using the mass-analyzed threshold ionization photofragment excitation technique

    NASA Astrophysics Data System (ADS)

    Han, Songhee; Kang, Tae Yeon; Kim, Sang Kyu

    2010-03-01

    The à A21←X˜ B21 transitions of H2S+ above the barrier to linearity have been investigated with the energy resolution high enough to identify individual rotational transition lines for the first time. The rotational cooling of the cation is achieved either by the direct ionization or mass-analyzed threshold ionization (MATI) technique employed in the vacuum-ultraviolet laser excitation of the jet-cooled H2S. Subsequent photoexcitation leads to the H2S+→H2+S+ dissociation and the S+ product yield taken as a function of the excitation energy gives the photofragment excitation (PHOFEX) spectra. The combined use of MATI and PHOFEX techniques greatly simplifies the spectrum allowing the accurate identification of the rotationally resolved bands which is otherwise a formidable task due to the intrinsic complexity of the à A21←X˜ B21 transition. Highly excited states of Ã(0,7,0), Ã(0,8,0), and Ã(0,9,0) vibronic levels with different K quantum numbers which are located above the barrier to linearity are thoroughly investigated. The bent-to-quasilinear transition of H2S+ above the barrier to linearity shows the characteristics of the Renner-Teller effect, showing the large A rotational constant and strong intensity borrowing of the highly vibrationally excited ground levels such as X˜(0,23,0) or X˜(0,24,0) in the dipole-allowed excitation. Spectroscopic parameters of term values, rotational, and spin-orbit coupling constants are precisely determined in this work, providing the most quantitative spectroscopic structure of the H2S+ to date. Quantum-state dependent photodissociation dynamics are also discussed from spectral features of PHOFEX.

  7. The Jahn-Teller effect in the lower electronic states of benzene cation. III. The ground-state vibrations of C6H6+ and C6D6+

    NASA Astrophysics Data System (ADS)

    Burrill, Andrew B.; Chung, You K.; Mann, Heather A.; Johnson, Philip M.

    2004-05-01

    New mass analyzed threshold ionization (MATI) spectra of the molecules C6H6+ and C6D6+ have been collected using tunable vacuum ultraviolet (VUV) single photon excitation from the neutral ground state and also using two-photon excitation through the 61 vibration of the 1B2u S1 state. Emphasis was placed on obtaining accurate relative intensities of the vibrational lines in order to use this information in the vibronic analysis. The MATI spectra collected from VUV (S0 originating state), triplet (T1), and resonant two photon (S1) excitation schemes were compared with Jahn-Teller calculations employing the classical model of Longuet-Higgins and Moffitt to obtain the Jahn-Teller coupling parameters of 3 of the 4 linearly active modes (e2g modes 6-9 in Wilson's notation). Franck-Condon factors, including the effects of geometry changes, were calculated from the vibronic wave functions and used to identify the lines in the various spectra. It is found that most of the lines with substantial intensity can be understood using only the modes 1, 6, 8, and 9. Weaker peaks are due to various non-e2g modes, but these do not derive intensity through Jahn-Teller coupling. When the effects of geometry change were included, simulations of the spectra from the calculated vibrational energies and intensities were close to the experimental spectra. This verifies the applicability of the model to the understanding of the vibrational structure of this type of molecule, but some variations indicate directions for further improvement of the model.

  8. Yttrium-Assisted C-H and C-C Bond Activation of Ethylene Probed by Mass-Analyzed Threshold Ionization Spectroscopy

    NASA Astrophysics Data System (ADS)

    Kim, Jong Hyun; Yang, Dong-Sheng

    2016-06-01

    The reaction between Y atom and ethylene (CH2=CH2) was performed in a laser-ablation supersonic molecular beam source. Y(C2H2), Y(C2H4), and Y(C4H6) were observed by time-of-flight mass spectrometry and investigated with mass-analyzed threshold ionization (MATI) spectroscopy and theoretical calculations. Y(C2H2) is formed by hydrogen elimination, Y(C2H4) by simple association, and La(C4H6) by C-C bond coupling and dehydrogenation. Both Y(C2H2) and Y(C2H4) have a C2v triangular structure with a C=C double bond in Y(C2H2) and a C-C single bond in Y(C2H4). Y(C4H6) has a five-membered metallacyclic structure (Cs) with Y binding to the two terminal carbon atoms of butene, which is the exactly same as that of Y(C4H6) formed in the Y + 1-butene reaction. For all three complexes, ionization has a small effect on the metal-carbon bond lengths because the rejected electron has basically a Y 5s character. The adiabatic ionization energies are measured to be 45679(5) wn for Y(C2H2), 45603(5) wn for Y(C2H4) and 43475(5) wn for Y(C4H6). The metal-ligand stretching frequencies of the three complexes are also measured from the MATI spectra.

  9. Medical students' intentions to seek abortion training and to provide abortion services in future practice.

    PubMed

    Myran, Daniel T; Carew, Caitlin L; Tang, Jingyang; Whyte, Helena; Fisher, William A

    2015-03-01

    Objectifs : Au Canada, l’accès à des services d’avortement est entravé par le manque de fournisseurs de soins étant en mesure d’offrir de tels services. Les facteurs qui influencent le nombre de fournisseurs de services d’avortement sont mal compris. Dans le cadre de cette étude, nous avons évalué les attitudes et les intentions des étudiants de médecine en ce qui concerne la formation en matière d’avortement et l’offre de tels services dans le cadre de leur future pratique, et ce, pour en connaître davantage au sujet de nos futurs effectifs dans ce domaine. Méthodes : Nous avons sondé les étudiants de médecine de première, de deuxième et de troisième année d’une université ontarienne, à différents stades de leur formation (et en leur demandant de remplir un questionnaire traitant de la future pratique qu’ils envisageaient), en vue de déterminer leurs intentions en ce qui concerne l’obtention d’une formation en matière d’avortement et l’offre de services d’avortement. Nous avons évalué les attitudes et les intentions de ces étudiants en ce qui concerne l’obtention d’une formation en matière d’avortement et l’offre de services d’avortement, leurs perceptions en ce qui a trait au soutien social, leur capacité subjective de recevoir une formation en matière d’avortement et d’offrir des services d’avortement, et leurs attitudes envers la légalité de l’avortement. Résultats : Trois cent trente-sept des 508 répondants potentiels (66,7 %) ont répondu aux questionnaires. Les réponses indiquent que les répondants adoptaient des attitudes relativement positives envers la légalité et la disponibilité de l’avortement au Canada. Les répondants adoptaient des attitudes considérablement plus positives envers les avortements médicaux au premier trimestre (et un plus grand nombre d’entre eux avaient l’intention d’offrir de tels services) qu’envers les avortements chirurgicaux men

  10. Optimal Trajectories and Control Strategies for the Helicopter in One-Engine-Inoperative Terminal-Area Operations

    NASA Technical Reports Server (NTRS)

    Chen, Robert T. N.; Zhao, Yi-Yuan; Aiken, Edwin W. (Technical Monitor)

    1995-01-01

    Engine failure represents a major safety concern to helicopter operations, especially in the critical flight phases of takeoff and landing from/to small, confined areas. As a result, the JAA and FAA both certificate a transport helicopter as either Category-A or Category-B according to the ability to continue its operations following engine failures. A Category-B helicopter must be able to land safely in the event of one or all engine failures. There is no requirement, however, for continued flight capability. In contrast, Category-A certification, which applies to multi-engine transport helicopters with independent engine systems, requires that they continue the flight with one engine inoperative (OEI). These stringent requirements, while permitting its operations from rooftops and oil rigs and flight to areas where no emergency landing sites are available, restrict the payload of a Category-A transport helicopter to a value safe for continued flight as well as for landing with one engine inoperative. The current certification process involves extensive flight tests, which are potentially dangerous, costly, and time consuming. These tests require the pilot to simulate engine failures at increasingly critical conditions, Flight manuals based on these tests tend to provide very conservative recommendations with regard to maximum takeoff weight or required runway length. There are very few theoretical studies on this subject to identify the fundamental parameters and tradeoff factors involved. Furthermore, a capability for real-time generation of OEI optimal trajectories is very desirable for providing timely cockpit display guidance to assist the pilot in reducing his workload and to increase safety in a consistent and reliable manner. A joint research program involving NASA Ames Research Center, the FAA, and the University of Minnesota is being conducted to determine OEI optimal control strategies and the associated optimal,trajectories for continued takeoff (CTO

  11. 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

  12. Optimal Trajectories and Control Strategies for the Helicopter in One-Engine-Inoperative Terminal-Area Operations

    NASA Technical Reports Server (NTRS)

    Chen, Robert T. N.; Zhao, Yi-Yuan; Aiken, Edwin W. (Technical Monitor)

    1995-01-01

    Engine failure represents a major safety concern to helicopter operations, especially in the critical flight phases of takeoff and landing from/to small, confined areas. As a result, the JAA and FAA both certificate a transport helicopter as either Category-A or Category-B according to the ability to continue its operations following engine failures. A Category-B helicopter must be able to land safely in the event of one or all engine failures. There is no requirement, however, for continued flight capability. In contrast, Category-A certification, which applies to multi-engine transport helicopters with independent engine systems, requires that they continue the flight with one engine inoperative (OEI). These stringent requirements, while permitting its operations from rooftops and oil rigs and flight to areas where no emergency landing sites are available, restrict the payload of a Category-A transport helicopter to a value safe for continued flight as well as for landing with one engine inoperative. The current certification process involves extensive flight tests, which are potentially dangerous, costly, and time consuming. These tests require the pilot to simulate engine failures at increasingly critical conditions, Flight manuals based on these tests tend to provide very conservative recommendations with regard to maximum takeoff weight or required runway length. There are very few theoretical studies on this subject to identify the fundamental parameters and tradeoff factors involved. Furthermore, a capability for real-time generation of OEI optimal trajectories is very desirable for providing timely cockpit display guidance to assist the pilot in reducing his workload and to increase safety in a consistent and reliable manner. A joint research program involving NASA Ames Research Center, the FAA, and the University of Minnesota is being conducted to determine OEI optimal control strategies and the associated optimal,trajectories for continued takeoff (CTO

  13. VizieR Online Data Catalog: GJ 3998 RVs, S and Halpha indexes (Affer+, 2016)

    NASA Astrophysics Data System (ADS)

    Affer, L.; Micela, G.; Damasso, M.; Perger, M.; Ribas, I.; Suarez Mascareno, A.; Gonzalez Hernandez, J. I.; Rebolo, R.; Poretti, E.; Maldonado, J.; Leto, G.; Pagano, I.; Scandariato, G.; Zanmar Sanchez, R.; Sozzetti, A.; Bonomo, A. S.; Malavolta, L.; Morales, J. C.; Rosich, A.; Bignamini, A.; Gratton, R.; Velasco, S.; Cenadelli, D.; Claudi, R.; Cosentino, R.; Desidera, S.; Giacobbe, P.; Herrero, E.; Lafarga, M.; Lanza, A. F.; Molinari, E.; Piotto, G.

    2016-08-01

    In this table we report the observing log for the GJ3998 spectra and the radial velocities, S, and Hα indexes. The star GJ3998 has been monitored from BJD=2456439.6 (26 May 2013) to BJD=2457307.8 (12 October 2015). We obtained a total of 136 data points spanning 869-days. The spectra were obtained at high resolution (R=115000) with the optical echelle spectrograph HARPS-N with exposure times of 15 minutes and an average signal-to-noise ratio (S/N) of 45 at 5500Å. Of the 136 epochs, 76 were obtained within the GAPS time and 60 within the Spanish time. Observations were gathered without the simultaneous Th-Ar calibration, which is commonly used to correct for instrumental drifts during the night. The M-type stars of the HADES program were observed by the Italian team in conjunction with other GAPS targets, which used the Th-Ar simultaneous calibration, therefore we estimated the drift data between the two fibers (star and reference calibration) for each night from these observations and evaluated the interpolated drift for GJ3998 (0.7m/s). Data reduction and spectral extraction were performed using the Data Reduction Software (DRS, Lovis & Pepe, 2007A&A...468.1115L, Cat. J/A+A/468/1115). RVs were measured by means of a weighted cross-correlation function (CCF) with the M2 binary mask provided with the DRS. The RVs were also measured by matching the spectra with a high S/N template obtained by coadding the spectra of the target, as implemented in the TERRA pipeline (Anglada-Escude & Butler, 2012ApJS..200...15A, Cat. J/ApJS/200/15), which provides a better RV accuracy when applied to M dwarfs. We list the observation dates (barycentric Julian date or BJD), the signal-to-noise ratios (S/Ns), the radial velocities (RVs) from the DRS and TERRA pipelines (indicated with a T) and the Hα and S indexes, calculated both by the TERRA pipeline and by an independent method described in the text. The RV errors reported are the formal ones and do not include the jitter term. The

  14. 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.

  15. VizieR Online Data Catalog: Bubble HII region Sh2-39 (N5) (Duronea+, 2017)

    NASA Astrophysics Data System (ADS)

    Duronea, N. U.; Cappa, C. E.; Bronfman, L.; Borissova, J.; Gromadzki, M.; Kuhn, M. A.

    2017-06-01

    The molecular observations were carried out in August 2015 with the 10m Atacama Submillimeter Telescope Experiment (ASTE). We used DASH345, a two sideband single-polarization heterodyne receiver, tunable in LO frequency range from 327GHz to 370GHz at observable frequency range from 321GHz to 376GHz. The XF digital spectrometer was set to a bandwidth and spectral resolution of 128MHz and 125KHz, respectively. The spectral velocity resolution was 0.11km/s, the half power beamwidth (HPBW) is ~22", and the main beam efficiency (mb) is 0.65. Observations were made using the on-the-fly (OTF) mode with two orthogonal scan directions along RA and Dec. (J2000) centered on RA, Dec.(J2000)= (18:17:02.1, -18:40:19). We observed simultaneously the lines CO(3-2) (345.796GHz) and HCO+(4-3) (356.734) in a region of ~17'x17' (see Fig. 1). The spectra were reduced with NOSTAR2 using the standard procedure. The brightest star projected at the center of [BDS2003] 6 (2MASS J18165113-1841488) was observed on August 2016 with Astronomy Research using the Cornell Infra Red Imaging Spectrograph (ARCoIRIS), a cross-dispersed, single-object, longslit, infrared imaging spectrograph,mounted on Blanco 4-m Telescope, CTIO. The spectra cover a simultaneous wavelength range of 0.80 to 2.47um, at a spectral resolution of about 3500 λ{δλ, encompassing the entire zYJHK photometric range. The spectrum was taken with 480 sec integration time, at 1.03 average airmass. The HD163336 telluric A0 V standard is observed immediately after target. The basic steps of the reduction procedure are described in Chene et al. (2012A&A...545A..54C, Cat. J/A+A/545/A54, 2013A&A...549A..98C). We used the corresponding pipeline. (3 data files).

  16. VizieR Online Data Catalog: Physical parameters from JHK flux (Gonzalez-Hernandez+, 2009)

    NASA Astrophysics Data System (ADS)

    Gonzalez Hernandez, J. I.; Bonifacio, P.

    2009-01-01

    395k2odfnew.dat) and assumes parameters Teff=9550, logg=3.95, vturb=2km/s and metallicity -0.5 (see Castelli & Kurucz 1994, Cat. <J/A+A/281/817>). (18 data files).

  17. VizieR Online Data Catalog: NORAS II. I. First results (Bohringer+, 2017)

    NASA Astrophysics Data System (ADS)

    Bohringer, H.; Chon, G.; Retzlaff, J.; Trumper, J.; Meisenheimer, K.; Schartel, N.

    2017-08-01

    The NOrthern ROSAT All-Sky (NORAS) galaxy cluster survey project is based on the ROSAT All-Sky Survey (RASS; Trumper 1993Sci...260.1769T), which is the only full-sky survey conducted with an imaging X-ray telescope. We have already used RASS for the construction of the cluster catalogs of the NORAS I project. While NORAS I was as a first step focused on the identification of galaxy clusters among the RASS X-ray sources showing a significant extent, the complementary REFLEX I sample in the southern sky was strictly constructed as a flux-limited cluster sample. A major extension of the REFLEX I sample, which roughly doubles the number of clusters, REFLEX II (Bohringer et al. 2013, Cat. J/A+A/555/A30), was recently completed. It is by far the largest high-quality sample of X-ray-selected galaxy clusters. The NORAS II survey now reaches a flux limit of 1.8*10-12erg/s/cm2 in the 0.1-2.4keV band. Redshifts have been obtained for all of the 860 clusters in the NORAS II catalog, except for 25 clusters for which observing campaigns are scheduled. Thus with 3% missing redshifts we can already obtain a very good view of the properties of the NORAS II cluster sample and obtain some first results. The NORAS II survey covers the sky region north of the equator outside the band of the Milky Way (|bII|>=20°). We also excise a region around the nearby Virgo cluster of galaxies that extends over several degrees on the sky, where the detection of background clusters is hampered by bright X-ray emission. This region is bounded in right ascension by R.A.=185°-191.25° and in declination by decl.=6°-15° (an area of ~53deg2). With this excision, the survey area covers 4.18 steradian (13519deg2, a fraction of 32.7% of the sky). NORAS II is based on the RASS product RASS III (Voges et al. 1999, Cat. IX/10), which was also used for REFLEX II. The NORAS II survey was constructed in a way identical to REFLEX II with a nominal flux limit of 1.8*10-12erg/s/cm2. (3 data files).

  18. Application of the Generalised Power Law To Double-Spike Measurements by MC-ICP-MS

    NASA Astrophysics Data System (ADS)

    Parkinson, I. J.; Bonnand, P.; Pearce, C. R.; Fehr, M.

    2010-12-01

    It is now well established that instrumental mass fractionation on MC-ICP-MS instruments does not always adhere to the exponential mass fractionation law and can be better described by the generalised power law (GPL)[1-3]. However, existing double-spike equations assume exponential mass fractionation behaviour[4,5]. Therefore, deviations from the exponential law become important because of the large amount of fractionation in the MC-ICP-MS. We have collected Cr and Mo double-spike standard data over a number of years. These data plot with small but measurable mass dependent differences from zero per mil, which vary between analytical sessions. We interpret that these deviations are due to small variations in the mass fractionation behaviour of the MC-ICP-MS and are related to differences in the type of nebuliser and cone geometry. The GPL relies on deriving a value for the exponent term, n, and its value can be derived from the slope of the natural logarithms of the measured isotope ratios[2]. However, the instrumental mass fractionation on modern MC-ICP-MS is very stable within an analytical session, so the spread in the isotope ratios of a standard is not very large, making it difficult to derive any statistically valid information on the value of the slope. For Cr, which only has four isotopes, we adopt a numerical technique for deriving the value of n. Offsets in the δ53Cr values can be reproduced by varying n between 0.058 and 0.090. Molybdenum has seven isotopes and is therefore possible to incorporate the GPL into the double-spike equations and solve directly for n, using four isotope ratios. The advantage of this technique is that allows the correct mass fractionation behavior to be applied to standards and samples within and between analytical sessions. This provides a means to generating high-precision data without recourse to ad hoc daily corrections. [1]Vance & Thirlwall, 2002, Chem. Geol. 185, 227-240. [2]Wombacher & Rehkamper, 2003, JAAS 18, 1371

  19. Lithium Isotopes; a Potential aid to Understanding Granite Petrogenesis

    NASA Astrophysics Data System (ADS)

    Bryant, C.; Chappell, B.; Bennett, V.

    2002-12-01

    , 10530-10544. 2Landenberger, B. and Collins, W.J. 1995. In Brown, M. & Piccoli, P (eds), The origin of granites and related rocks. p86.3Bryant et al. (sub.) JAAS.

  20. VizieR Online Data Catalog: Abundances in 23 open clusters. I. (Overbeek+, 2016)

    NASA Astrophysics Data System (ADS)

    Overbeek, J. C.; Friel, E. D.; Jacobson, H. R.

    2016-08-01

    Our open cluster (OC) data set is comprised mainly of KPNO 4m, CTIO, and HET spectra taken in past observing runs (described in Friel et al. 2003AJ....126.2372F, 2005, J/AJ/129/2725; Jacobson et al. 2008AJ....135.2341J, 2009, J/AJ/137/4753; Friel et al. 2010, J/AJ/139/1942; Jacobson & Friel 2013, J/AJ/145/107). These are observations of red giants in Be17, Be39, Cr261, M67, NGC188, NGC1193, NGC1245, NGC1817, NGC1883, NGC2141, NGC2158, NGC2194, NGC2355, NGC6939, and NGC7142. We have also obtained Keck spectra of five clusters, Be18, Be21, Be22, Be32, and PWM4, and CTIO spectra for Be31, courtesy of D. Yong (see Yong et al. 2005AJ....130..597Y, 2012, J/AJ/144/95 for details). We have McDonald 2.7m spectra of five stars in NGC 7789 courtesy of M. Briley (2013, private communication), and VLT UVES spectra of four stars in NGC 6192 from L. Magrini (see Magrini et al. 2010, J/A+A/523/A11, for details). We have 23 OCs total in our sample, which are summarized in Table 1. The signal-to-noise ratio (S/N) of these data range from 60 to 180 per pixel, and the resolution ranges from R~25000 (older KPNO data) to R~47000 (UVES, Keck, and McDonald data). We have recently taken additional spectra of two stars each in NGC1817, NGC2141, and NGC6939 with the Apache Point Observatory (APO) 3.5m telescope. Our APO data were taken on the nights of 2014 November 16 (NGC 1817 and NGC 6939), 2015 January 6, 15, 26, and 28 (NGC 2141). We used the ARC Echelle Spectrograph on standard settings (3200-10000Å, R~32000). (8 data files).

  1. 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

  2. How Well Do Functional Assessments of Mobility and Balance Discriminate Fallers and Recurrent Fallers from Non-Fallers among Ambulatory Older Adults in the Community?

    PubMed

    Balasubramanian, Chitralakshmi K; Boyette, Amber; Wludyka, Peter

    2015-01-01

    Objet : Comparer la capacité qu'ont les évaluations de la mobilité fonctionnelle et de l'équilibre d'établir une distinction entre les personnes qui chutent et les personnes qui ne chutent pas, et entre celles qui chutent fréquemment et celles qui chutent peu ou jamais; comparer la précision en matière de distinction des points de coupure propres à l'échantillon de cette étude par rapport à ceux proposés dans la littérature concernant les personnes âgées qui résident dans la collectivité. Méthodes : Dans un échantillon de 39 personnes âgées mobiles qui vivent en autonomie dans la collectivité, les personnes qui chutent ont été déterminées selon le nombre de chutes faites au cours de l'année précédente. Sept tests fonctionnels concernant la mobilité et l'équilibre ont été utilisés pour déterminer les personnes qui chutent et les personnes qui chutent fréquemment selon leurs antécédents en matière de chutes. Résultats : La distinction des personnes qui chutent des personnes qui ne chutent pas était faible: seule une évaluation avancée de l'équilibre a établi une distinction importante entre ces groupes (p=0,0498, AUC=0,68). Quatre évaluations ont établi une distinction importante entre les personnes qui chutent fréquemment par rapport à celles qui chutent peu souvent ou jamais (p=0,006 à 0,009), mais leurs puissances de distinction n'étaient pas assez différentes les unes des autres (AUC=0,77 à 0.80, p>0,05). Dans le cadre de deux évaluations, les points de coupure fondés sur l'échantillon de l'étude ont amélioré la précision en matière de distinction des points de coupure établis selon la littérature. Conclusions : Pour améliorer la prédiction des chutes chez les personnes âgées qui résident dans la collectivité, les prochaines études prospectives doivent prendre en considération l'inclusion d'évaluations avancées de la mobilité et de l'équilibre et cibler les points de coupure au niveau

  3. Physiotherapy needs assessment of people with stroke following discharge from hospital, stratified by acute functional independence measure score.

    PubMed

    Depaul, Vincent G; Moreland, Julie D; Dehueck, Amy L

    2013-01-01

    Objectif : Établir les besoins en physiothérapie des personnes ayant subi un accident vasculaire cérébrale (AVC) lors de leur congé de l'hôpital, 6 mois après leur congé et 1 an après leur congé, et examiner les résultats stratifiés en fonction des pointages de mesure de l'autonomie fonctionnelle aigüe (Functional Independence Measure, FIM). Méthodologie : On a recruté en tout 241 adultes ayant récemment subi un ACV pour cette étude longitudinale de cohorte. En plus de participer à une entrevue semi-structurée comprenant des questions sur leurs besoins et sur les obstacles en matière de mobilité, les participants ont dû remplir et retourner un sondage d'évaluation des besoins avec questions fermées. Résultats : Au cours de l'entrevue, les participants ont fait part de besoins et d'obstacles liés au contrôle de leur motricité, à la marche, aux escaliers, à la fatigue, à la prévention des chutes et à l'accès à des services de physiothérapie. Le sondage a permis d'établir de nombreux autres besoins, dont la nécessité de transferts, l'utilisation d'un fauteuil roulant, un plus grand équilibre et de plus grandes habiletés motrices ainsi que l'accès à la physiothérapie et à des installations adaptées à leurs besoins en exercice. La fréquence des besoins et des obstacles avait tendance à diminuer chez les participants qui avaient obtenu des pointages plus élevés à l'échelle FIM. On n'a observé aucune tendance constante de diminution des besoins et des obstacles au fil du temps. Conclusions : Au cours de la première année suivant le congé de l'hôpital, les personnes qui ont subi un AVC font état d'un grand nombre de besoins variés et persistants en matière de mobilité. Les physiothérapeutes doivent faire pression pour des services de suivi adéquat et doivent contribuer à l'inclusion des besoins des patients qui ont subi un AVC dans les politiques en matière de santé.

  4. Setting priorities for a research agenda to combat drug-resistant tuberculosis in children.

    PubMed

    Velayutham, B; Nair, D; Ramalingam, S; Perez-Velez, C M; Becerra, M C; Swaminathan, S

    2015-12-21

    Contexte : De nombreuses lacunes en matière de connaissances entravent la prévention et le traitement de la tuberculose (TB) pharmacorésistante. L'identification des priorités de recherche est vitale pour informer et développer des stratégies afin de répondre à ce problème négligé.Objectif : Tenter d'identifier systématiquement et de classer par ordre les priorités en matière de recherche sur la TB pharmacorésistante de l'enfant.Schéma: Ayant adapté la méthode de Child Health and Nutrition Research Initiative (CHNRI) (Initiative de recherche en santé et en nutrition de l'enfant), nous avons compilé 53 questions de recherche dans quatre domaines, puis les avons classées en trois types de recherche différents. Nous avons invité des experts en TB pharmacorésistante de l'enfant à classer ces questions grâce à une enquête en ligne.Résultats : Un total de 81 personnes ont participé à l'enquête. La question de recherche qui a été classée première était l'identification des meilleures associations d'outils de diagnostic existants pour permettre un diagnostic précoce. Les questions considérées comme prioritaires en matière de traitement étaient centrées sur des interventions visant à améliorer les résultats du traitement, à réduire les effets secondaires des médicaments et à déterminer la durée idéale du traitement. La prévalence de la TB pharmacorésistante était la priorité dans le domaine de l'épidémiologie. Les questions relatives au développement ont été considérées comme hautement prioritaires et se sont focalisées sur des interventions d'amélioration du diagnostic, du traitement et des modalités de délivrance du traitement.Conclusion : Cette enquête est la première qui vise à identifier et à hiérarchiser les priorités de recherche relatives à la TB pharmacorésistante de l'enfant. Son résultat constitue une ressource pour guider la recherche afin d'améliorer la prévention et le traitement de

  5. Etude critique de la prise en charge de 159 personnes âgées en consultation de psychiatrie

    PubMed Central

    Ben Thabet, Jihène; Ammar, Yousra; Charfi, Nada; Zouari, Lobna; Zouari, Nasreddine; Gaha, Lotfi; Maalej, Mohamed

    2014-01-01

    Introduction Le phénomène de vieillissement des populations est associé à une augmentation de la prévalence de la morbidité liée à l’âge. La prescription des psychotropes chez le sujet âgé est de plus en plus fréquente dans les institutions, les doses sont de plus en plus élevées, avec un recours fréquent à une poly pharmacothérapie. Nous nous sommes proposé de décrire les conduites thérapeutiques chez le sujet âgé consultant en psychiatrie, en vue de les confronter aux dernières recommandations en la matière. Méthodes L’étude était de type rétrospectif et descriptif. Elle a concerné les sujets âgés d'au moins 60 ans ayant consulté pour la première fois en psychiatrie, au CHU Hédi Chaker à Sfax, en 2010 ou 2011. Résultats Nous avons colligé 159 dossiers. L’âge moyen était de 73 ans. La démence et les troubles de l'humeur étaient les diagnostics les plus fréquents. Sur le plan thérapeutique, une poly thérapie faite d'au moins deux psychotropes de familles différentes a été prescrite pour 55,9%. Chez 60.3% des sujets, le traitement a été prescrit d'emblée à dose complète. Aucun dossier ne faisait état d'une prise en charge psychothérapeutique. Conclusion La prise en charge des malades de notre étude n’était pas conforme aux recommandations, notamment en matière d'association médicamenteuse, de progression des doses et d'association de la psychothérapie à la pharmacothérapie. L'information des médecins et leur sensibilisation aux particularités du sujet âgé contribuerait à optimiser les soins qui leur sont prodigués, y compris en psychiatrie. PMID:25120873

  6. Ionization spectroscopies and theoretical calculations of cis and trans 3-fluoro-N-methylaniline-Arn(n = 1,2) van der Waals clusters: Structures and binding energies

    NASA Astrophysics Data System (ADS)

    Zhang, Lijuan; Li, Dazhi; Cheng, Min; Du, Yikui; Zhu, Qihe

    2017-08-01

    The ab initio and dispersion-corrected density functional theory (DFT) calculations of the van der Waals (vdW) clusters of cis and trans 3-fluoro-N-methylaniline-Arn (3FNMA-Arn) (n = 1,2) predict that, for cis and trans 3FNMA-Ar1 clusters, the π-bound geometry with the Ar atom sitting over the ring is the global minimum in both neutral and cationic states, while for cis and trans 3FNMA-Ar2 clusters, the [π | π]-bound sandwich structure with two Ar ligands occupying nearly equivalent π-bound positions above and below the ring plane is the global minimum. The vibronic spectra of cis and trans 3FNMA-Ar1 clusters in the S1 state were recorded by using one-color and two-color resonant two-photon ionization (R2PI) techniques, the comparison of which yields an estimate of the binding energy of cluster in the S1 state. It is found that the linear correlation between the redshift of the S1 ← S0 electronic transition energy (E1) of cluster and the E1 of the monomer also holds for the Ar clusters of hetero-di-substituted aromatics. By recording the photoionization efficiency (PIE) curves and mass-analyzed threshold ionization (MATI) dissociation spectra of cis and trans 3FNMA-Ar1 clusters, the ionization energies (IE) and binding energies of clusters in the D0 state are obtained. The MATI spectra of the cis and trans 3FNMA-Ar1 cations exhibit significant progressions of the vdW bending mode (bx), indicating the structural changes of the clusters in the bending coordinate upon ionization. The combination of the three kinds of spectroscopic methods provides the binding energies of cis and trans 3FNMA-Ar1 clusters in the S0, S1 and D0 states with good accuracy, and the values estimated by dispersion-corrected DFT calculations compare well with the experimental results. From our studies, the ωB97X-D and TD-ωB97X-D methods using high quality basis set are recommended for studying the intermolecular interaction of such vdW clusters in the ground and excited states.

  7. Ionization spectroscopies and theoretical calculations of cis and trans 3-fluoro-N-methylaniline-Arn(n=1,2) van der Waals clusters: Structures and binding energies.

    PubMed

    Zhang, Lijuan; Li, Dazhi; Cheng, Min; Du, Yikui; Zhu, Qihe

    2017-08-05

    The ab initio and dispersion-corrected density functional theory (DFT) calculations of the van der Waals (vdW) clusters of cis and trans 3-fluoro-N-methylaniline-Arn (3FNMA-Arn) (n=1,2) predict that, for cis and trans 3FNMA-Ar1 clusters, the π-bound geometry with the Ar atom sitting over the ring is the global minimum in both neutral and cationic states, while for cis and trans 3FNMA-Ar2 clusters, the [π|π]-bound sandwich structure with two Ar ligands occupying nearly equivalent π-bound positions above and below the ring plane is the global minimum. The vibronic spectra of cis and trans 3FNMA-Ar1 clusters in the S1 state were recorded by using one-color and two-color resonant two-photon ionization (R2PI) techniques, the comparison of which yields an estimate of the binding energy of cluster in the S1 state. It is found that the linear correlation between the redshift of the S1←S0 electronic transition energy (E1) of cluster and the E1 of the monomer also holds for the Ar clusters of hetero-di-substituted aromatics. By recording the photoionization efficiency (PIE) curves and mass-analyzed threshold ionization (MATI) dissociation spectra of cis and trans 3FNMA-Ar1 clusters, the ionization energies (IE) and binding energies of clusters in the D0 state are obtained. The MATI spectra of the cis and trans 3FNMA-Ar1 cations exhibit significant progressions of the vdW bending mode (bx), indicating the structural changes of the clusters in the bending coordinate upon ionization. The combination of the three kinds of spectroscopic methods provides the binding energies of cis and trans 3FNMA-Ar1 clusters in the S0, S1 and D0 states with good accuracy, and the values estimated by dispersion-corrected DFT calculations compare well with the experimental results. From our studies, the ωB97X-D and TD-ωB97X-D methods using high quality basis set are recommended for studying the intermolecular interaction of such vdW clusters in the ground and excited states. Copyright

  8. Ending neglect: providing effective childhood tuberculosis training for health care workers in Tanzania.

    PubMed

    Adams, L V; Olotu, R; Talbot, E A; Cronin, B J; Christopher, R; Mkomwa, Z

    2014-12-21

    Contexte : Structures de soins de santé à Dar es Salam, Pwani et Arusha, Tanzanie.Objectif : Evaluer les connaissances et pratiques du personnel de santé (HCW) un an après une formation spécifique à la tuberculose de l'enfant (TB).Schéma : Grâce à une enquête standardisée, nous avons interviewé un échantillon de complaisance de HCW offrant des soins à la fois généraux et spécialisés à des enfants.Résultats : Nous avons interviewé 117 HCW dans des dispensaires de TB, des centres de santé maternelle et infantile, des dispensaires pour le virus de l'immunodéficience humaine (VIH), des consultations externes et des services de pédiatrie dans 12 établissements. Un total de 81 HCW (62% d'infirmières, 74% de cliniciens) a affirmé avoir bénéficié de la formation nationale relative à la TB de l'enfant. La majorité a répondu correctement aux questions relatives au diagnostic de la TB de l'enfant, à son traitement et à la prise en charge conjointe de la TB et du VIH, quels que soient les antécédents de formation. La plupart ont dit demander en routine des radiographies pulmonaires, un test VIH et une recherche de contacts tuberculeux lors de l'évaluation des enfants. Moins de la moitié des HCW a affirmé recueillir des crachats en routine pour une culture mycobactérienne ou réaliser un test cutané à la tuberculine. La prescription de thérapie préventive par isoniazide (IPT) a été faite trois fois plus souvent par des HCW formés que par ceux qui ne l'avaient pas été (P < 0,05).Conclusion : En général, les connaissances en matière de TB de l'enfant étaient élevées et les pratiques conformes aux directives nationales. L'étude a identifié des lacunes spécifiques en matière de diagnostic, de traitement et d'utilisation de l'IPT afin de mieux cibler les futures formations.

  9. Maternal mortality and its correlates: practical implications of data analysis across multiple countries.

    PubMed

    Sagynbekov, Ken Imanak

    2013-07-01

    Objectif : Les études portant sur la mortalité maternelle qui utilisent des données issues de multiples pays en viennent souvent à repérer des corrélats significatifs sur le plan statistique et à les interpréter comme étant des facteurs pertinents en matière de politique. Cette étude a été conçue pour traiter de la fragilité d’une association statistique entre le taux de mortalité maternelle et ses principaux corrélats, ainsi que pour évaluer la pertinence de l’analyse de données issues de multiples pays à des fins d’élaboration de politiques. Méthodes : Les tendances de la variation du taux de mortalité maternelle associées au taux de fertilité, au revenu par habitant, à l’inscription aux écoles primaires et secondaires, à la qualité institutionnelle, à la participation des femmes à la politique et aux indicateurs des systèmes de santé dans 111 pays en 2000 et dans 128 pays en 2005 ont été explorées au moyen d’une approche de modélisation linéaire à niveaux multiples. Résultats : Le taux de fertilité et le revenu par habitant ont été les seuls facteurs prédictifs robustes du taux de mortalité maternelle. À la suite de la neutralisation des effets du taux de fertilité, du revenu par habitant et des facteurs contextuels propres à chacune des régions, nous avons constaté que les indicateurs des systèmes de santé et l’inscription scolaire étaient des facteurs prédictifs directs instables du taux de mortalité maternelle. Conclusion : Bien que les études comparatives multipays puissent identifier des corrélats clés en ce qui concerne le taux de mortalité maternelle, les recommandations en matière de politique visant la réduction de ce taux devraient être fondées sur des modèles causaux qui tiennent compte des facteurs contextuels.

  10. Holocene groundwater turnover in an coastal aquifer in Albania - mirrored by isotopes

    NASA Astrophysics Data System (ADS)

    Jacks, G.; Kumanova, Xh; Marku, S.

    2012-04-01

    Holocene groundwater turnover in a coastal aquifer in Albania - mirrored by isotopes Jacks G 1, Kumanova Xh 2 and Marku S 2 1) Dept. of Land and Water Resources Engineering, KTH, SE-114 29 Stockholm, Sweden 2) Albanian Geological Survey, Tirana, Albania Mati River has formed a coastal aquifer in N. Albania serving as a water source for 220 000 people. The near shore portions of the aquifer have a brackish groundwater. A crucial question is to what extent the aquifer is recharged from the alluvial cone at the entrance of the river into the coastal plain and to what extent the brackish water is drawn into a large well-field supplying Durres, the second largest town in Albania. The brackish water was dated by 14C, resulting in ages between 4-7000 years BP. ^18O data showed that the brackish water was not a mixture between sea water and fresh water but had freshwater signature of -5 to -10 o/oo. The low values are caused by the oxidation of sulphides in a copper mining area upstream in the Mati River catchment (Demi 2003). Most likely the salinity is derived from diffusion from saline pore water in intercalated clay layers. A similar condition is found in the coastal Kerala aquifers in Southern India (Jacks et al., 2007). The water extracted in the large well-field has low salinity. ^34S data show that the pumped groundwater has a typical river signature with ^34S = 4-5 o/oo while the brackish near shore water has a sea water signature around 20-21 o/oo. Thus the extracted water is almost entirely supplied by current recharge from the alluvial cone. The salinity now restricted to pore water in the intercalated clay layers might be derived from the Flandrian transgression. A shore line has been observed close to the foothills in the plane by Fouache (2006). The paleo-levels of the sea is very variable along the Adriatic coast as this is a tectonic active areas along the seam between the African and the European plates (Allaj et al. 2001; Fouache 2006; Mathers et al

  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. 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.

  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. Mécanisme du transfert pervaporatif des mélanges aqueux d'acétate d'éthyle à travers des membranes en PDMS

    NASA Astrophysics Data System (ADS)

    Bendjama, Z.; Ait-Amar, H.; Schaetzel, P.; Nguyen, Q. T.

    1999-09-01

    This study concerns the transfer of the “water-ethylacetate" system, through a polymer material, the polydimethylsiloxane, at various degrees of reticulation. From these experimental results, the transfer of matter can be expressed for small contents of ester, using the Fick law in which the diffusion coefficient is constant. The absence of flux coupling is demonstrated by the fact that the water diffusion coefficient in the silicon giving account of the global transfer in pervaporation, is identical to its measured value in pure water. L'étude porte sur le transfert du système “eau - acétate d'éthyle" à travers un matériau polymère, la polydiméthylsiloxane, réticulé à différents degrés. À partir des résultats expérimentaux, le transfert de matière a pu être exprimé pour les faibles teneurs en ester, en utilisant la loi de Fick dans laquelle le coefficient de diffusion est constant. L'absence de couplage des flux est démontrée par le fait que le coefficient de diffusion de l'eau dans le silicone rendant compte du transfert global en pervaporation est identique à sa valeur mesurée à l'état pur.

  15. 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.

  16. 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.

  17. 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.

  18. The esef instrument: a european facility for exposing active and passive particle detectors in low earth orbits

    NASA Astrophysics Data System (ADS)

    Bibring, J.-P.; Borg, J.; Bunch, T.; Chardin, A.; Deshpande, S.; Jolly, H.; Maag, C.; Mandeville, J.-C.; McDonnell, J. A. M.; Nishioka, K.; Sálvetat, P.; Stevenson, T.; Vassent, B.

    In the context of dust collections in space, the COMET experiment (Collecte en Orbite de Matière ExtraTerrestre) was proposed in 1982 and has been accepted in 1985 in the framework of the Soviet-French space cooperation program. The idea of such an experiment was to install collectors inside hermetic boxes, to have these boxes mounted outside a space station, orbiting the Earth and to have the capability of chosing the date and duration of the collection. In February 94, it has been proposed to fly an improved version of this instrument, as part of the payload of the EUROMIR 95 mission. Renamed as the European Space Exposure Facility (ESEF), it carries experiments from several principal investigators (PIs). These experiments have been designed to analyse in real time some parameters of the encountered particles and to collect material, both of terrestrial and extraterrestrial origin, to be brought back to the Earth at the end of the mission. Three types of collecting material are used: high purity metals, foams and silica aerogels. All grains down to submicron sizes can be possibly identified by such a variety of collectors; the presence of very low density collectors, like the foams and silica aerogels, should permit the collection of grains least modified, one of the primary goals of this investigation. This paper refers to the description of the instrument and of the various experiments.

  19. 25th Birthday Cern- Restaurant

    ScienceCinema

    None

    2016-07-12

    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.

  20. Sécurité au-delà des mythes et des croyances

    ScienceCinema

    None

    2016-07-12

    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 ?

  1. 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.

  2. Evaluation des connaissances des parents sur les bronchiolites aiguës

    PubMed Central

    Gueddari, Widad; Tazi, Abderrahmane; Ouardi, Amine; Nani, Samira; Zineddine, Abdelhadi

    2014-01-01

    Les infections respiratoires (IR) constituent la deuxième cause de mortalité infantile au Maroc, dû en partie à l'absence d'information et de sensibilisation. Le but de ce travail était d’évaluer les connaissances des parents sur la bronchiolite aiguë, infection respiratoire très fréquente. Nous avons réalisé une enquête basée sur un questionnaire, auprès de parents de nourrissons consultants pour toux, avec ou sans gêne respiratoire. 180 parents ont été inclus dans l’étude. Les parents pensaient que l'infection respiratoire était secondaire au climat froid (96%); seuls 4% ont évoqué une origine infectieuse. Aucun des parents ne savait que le lavage des mains était un moyen de prévention de la transmission. Les parents ont majoritairement répondu que la kinésithérapie respiratoire ne servait à rien (65%), et qu'elle était nocive (24.5%). Ce manque de connaissances fondamentales en matière d'IR et de bronchiolite en particulier, devrait inciter à entreprendre un programme de sensibilisation PMID:25328606

  3. A dynamic energy budget (DEB) model for the energy usage and reproduction of the Icelandic capelin (Mallotus villosus).

    PubMed

    Einarsson, Baldvin; Birnir, Björn; Sigurðsson, Sven

    2011-07-21

    We apply a dynamic energy budget (DEB) model to the Icelandic capelin (Mallotus villosus) and introduce a new state variable to capture the roe production of individual fish. Species-specific coefficients are found for the capelin such as the shape coefficient and the Arrhenius temperature. We show how to link the DEB model to measurable quantities such as weight, length, fat, and roe content. We use data on measured 3-year old female capelin from 1999 to 2000 season from the Marine Research Institute of Iceland (MRI) and Matis, an Icelandic Food and Biotech R&D. We then find plausible parameter values for the DEB model by fitting the output of the model to these data. We obtain good fits between theory and observations, and the DEB model successfully reproduces weight, length, fat percentage and roe percentage of capelin. We discuss the effect of maturity on the spawning route of capelin, and describe how we intend to incorporate these results with an interacting particle model for the spawning migration of capelin.

  4. Ablation d'un film d'or par laser à excimère

    NASA Astrophysics Data System (ADS)

    Sentis, M.; Hermann, J.; Pereira, A.; Delaporte, Ph.; Marine, W.; Perrière, J.; Bianchi, L.; Galli, R.

    2003-06-01

    Ces travaux de recherche ont été réalisés dans le cadre du projet de développement du Laser MégaJoule (LMJ). Parmi les expériences d'interaction laser - matière à très haut flux, certaines conduiront à un dépôt de particules d'or sur les éléments internes de la chambre d'interaction. Pour nettoyer ce dépôt de particules, la possibilité d'utiliser un procédé automatisé basé sur l'ablation laser a été étudiée. Un modèle numérique simplifié a été développé et une étude expérimentale réalisée sur des échantillons d'acier inoxydable ou de B4C recouverts d'un film d'or d'une épaisseur de ~20 nm déposés par PVD. Ces travaux montrent que plus de 95 % du film d'or peuvent être enlevés avec quelques tirs d'un laser XeCI dès que la densité d'énergie dépasse 3 J/cm^2.

  5. 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.

  6. Identification and characterization of vinylpyrrolidone-vinylimidazolium chloride copolymers in cosmetic products by pyrolysis-gas chromatography-mass spectrometry method.

    PubMed

    Gmahl, E; Ruess, W

    1993-04-01

    Synopsis Commercially available copolymers of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium chloride, known as 'Luviquat' types in the cosmetic industry, were analysed for their composition using a combination of pyrolysis-gas chromatography-mass spectrometry method. This is a report on the determined pyrolytic products and the fast identification of the analysed polymers both in raw materials and cosmetic products. Calibration with defined material ensures the determination of monomer ratios with good reproducibility. Résumé Les copolymères de chlorure de 1-vinyle-2-pyrolidone et de 1-vinyle-3-methylimidazolium disponibles dans le commerce, connus dans l'industrie cosmétique sous la dénomination de copolymères de vinyle, ont été analysés à laide d'une méthode combinant la pyrolyse, la spectrométrie de mass et la chromatographie en phase gazeuse. Cet article constitue un rapport sur les produits déterminés par pyrolyse et sur la rapidité d'identification des polymères analysés à la fois dans des matières premières et dans des produits cosmétiques. Le calibrage avec un matériel défini assure une bonne détermination des taux de monomères dotés d'une reproductibilité.

  7. Proteomic analysis of human hepatoma cells expressing methionine adenosyltransferase I/III☆

    PubMed Central

    Schröder, Paul C.; Fernández-Irigoyen, Joaquín; Bigaud, Emilie; Serna, Antonio; Renández-Alcoceba, Rubén; Lu, Shelly C.; Mato, José M.; Prieto, Jesús; Corrales, Fernando J.

    2015-01-01

    Methionine adenosyltransferase I/III (MATI/III) synthesizes S-adenosylmethionine (SAM) in quiescent hepatocytes. Its activity is compromised in most liver diseases including liver cancer. Since SAM is a driver of hepatocytes fate we have studied the effect of re-expressing MAT1A in hepatoma Huh7 cells using proteomics. MAT1A expression leads to SAM levels close to those found in quiescent hepatocytes and induced apoptosis. Normalization of intracellular SAM induced alteration of 128 proteins identified by 2D-DIGE and gel-free methods, accounting for deregulation of central cellular functions including apoptosis, cell proliferation and survival. Human Dead-box protein 3 (DDX3X), a RNA helicase regulating RNA splicing, export, transcription and translation was down-regulated upon MAT1A expression. Our data support the regulation of DDX3X levels by SAM in a concentration and time dependent manner. Consistently, DDX3X arises as a primary target of SAM and a principal intermediate of its antitumoral effect. Based on the parallelism between SAM and DDX3X along the progression of liver disorders, and the results reported here, it is tempting to suggest that reduced SAM in the liver may lead to DDX3X up-regulation contributing to the pathogenic process and that replenishment of SAM might prove to have beneficial effects, at least in part by reducing DDX3X levels. This article is part of a Special Issue entitled: Proteomics: The clinical link. PMID:22270009

  8. KEY COMPARISON: CCQM-K61: Quantitation of a linearised plasmid DNA, based on a matched standard in a matrix of non-target DNA

    NASA Astrophysics Data System (ADS)

    Ellison, Stephen L. R.; Holden, Marcia J.; Woolford, Alison; Haynes, Ross J.; Salit, Marc L.; Burns, Malcolm; Parkes, Helen; Cherdchu, Chainarong; Corbisier, Philippe; Emslie, Kerry R.; Gao, Yunhua; Gioria, Sabrina; Griffiths, Kate R.; Kawaharasaki, Mamoru; Konopelko, Leonid A.; Kustikov, Yury A.; Park, Sang-Ryoul; Phunbua, Nittaya; Vonsky, Maxim S.; Wang, Jing; Yang, Inchul

    2009-01-01

    Key comparison CCQM-K61 was performed to demonstrate and document the capability of interested national metrology institutes in the determination of the quantity of specific DNA target in an aqueous solution. The study provides support for the following measurement claim: "Quantitation of a linearised plasmid DNA, based on a matched standard in a matrix of non-target DNA". The comparison was an activity of the Bioanalysis Working Group (BAWG) of the Comité Consultatif pour la Quantité de Matière and was coordinated by NIST (Gaithersburg, USA) and LGC (Teddington, UK). The following laboratories (in alphabetical order) participated in this key comparison. DMSC (Thailand); IRMM (European Union); KRISS (Republic of Korea); LGC (UK); NIM (China); NIST (USA); NMIA (Australia); NMIJ (Japan); VNIIM (Russian Federation) Good agreement was observed between the reported results of all nine of the participants. Uncertainty estimates did not account fully for the dispersion of results even after allowance for possible inhomogeneity in calibration materials. Preliminary studies suggest that the effects of fluorescence threshold setting might contribute to the excess dispersion, and further study of this topic is suggested 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).

  9. Application de codes Monte Carlo en neutronthérapie

    NASA Astrophysics Data System (ADS)

    Paquis, P.; Pignol, J. P.; Cuendet, P.; Fares, G.; Diop, C.; Iborra, N.; Hachem, A.; Mokhtari, F.; Karamanoukian, D.

    1998-04-01

    Monte Carlo calculation codes allow to study accurately all the parameters relevant to radiation effects, like the dose deposition or the type of microscopic interactions, through one by one particle transport simulation. These features are very useful for neutron irradiations, from device development up to dosimetry. This paper illustrates some applications of these codes in Neutron Capture Therapy and Neutron Capture Enhancement of fast neutrons irradiations. Les codes de calculs Monte Carlo permettent au travers de la simulation des trajectoires de particules dans la matière d',étudier finement tous les paramètres d'une irradiation comme la dose ou les interactions avec les atomes du milieu. Ces caractéristiques sont particulièrement utiles pour les irradiations par neutrons, depuis le développement des machines jusqu'à? la dosimétrie. Les applications de ces codes sont illustrées pour la Thérapie par Captures de neutrons, les Irradiations par Neutrons Rapides, et la Potentialisation par Capture de Neutrons.

  10. 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.

  11. 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.

  12. [The oldest German textbook on internal medicine of horses, edited at the Kayserlich-Köngliche Pferd-Cur und Operations Schul in Vienna in 1770].

    PubMed

    Greiner, S

    1996-06-01

    The manuscript has the title: "Erkandtnus deren innerlichen Krankheiten des Pferds überhaupt". Through two take downs of the lectures of Ludwig Scotti, the founder of the first school for veterinarians in the German speaking part of Europe and its first teacher, the manuscript is identified as another take down. The first part of the manuscript, which is about internal medicine, in large passages is a literally translation of Lafosse's "Guide de Maréchal". In most passages the second part, which is about pharmacology, is a copy of the German translation of Claude Bourgelat's "Matière médicale" published in 1766. Nevertheless Scotti brings in his own experiences by inserting in or rewriting of some chapters or by adding other theories, likewise his prescriptions cannot be found in Bourgelat's book. The manuscript is an example for the highest level in veterinary science in the second half of the 18th century. This is emphasized through the comparison with contemporary literature in German language, for example the books of von Sind and Deigendesch.

  13. 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).

  14. ÉTUDE de la Capture ÉLECTRONIQUE dans la DÉSINTÉGRATION du Nuclide 23Na

    NASA Astrophysics Data System (ADS)

    Charpak, G.

    L'étude de 22Na est faite avec un compteur Geiger 4π. On met en évidence l'émission d'un rayonnement de très basse énergle, indépendant des rayons β+, complètement absorbé dans un film de quelques microgrammes par centimètre carré d'aluminium on de matière plastique LC 600 et attribué aux électrons Auger d'énergie maximum 0,85 keV, qui suivent la capture électronique. En raison du très faible parcours de ces électrons , nous sommes amené à discuter particulièrement une méthode simple de préparation de sources radloactives minces et uniformes. Nous obtenons la valeta du rapport [ Capture Λ/Emission β+ = (6,5±0,9) pour 100.

  15. Binaires semi-détachées : taxonomie

    NASA Astrophysics Data System (ADS)

    Hameury, Jean-Marie

    2001-01-01

    We discuss here compact binaries in which the orbital separation is small enough that mass is transferred from one star to the other. These systems are classified according to the nature of the primary: algols for ordinary stars, cataclysmic variables for white dwarfs, and X-ray binaries for black holes and neutron stars. These classes are often studied separately, even though the same physical processes occur in all objects; a global approach is most useful for understanding these objects and the physical processes. On discutera ici des binaires serrées dans lesquelles la séparation est suffisamment faible pour qu'il y ait échange de matière entre les deux étoiles. La classification de ces systèmes est liée à la nature de l'étoile accrétante: algols pour la séquence principale, variables cataclysmiques pour les naines blanches, et binaires X pour les étoiles à neutrons ou les trous noirs. Ces classes sont souvent étudiées de façon séparée, mais elles révèlent des processus physiques communs; la compréhension des objets et de la physique sous-jacente bénéficie d'une approche globale.

  16. La santé des Premières nations, des Inuits et des Métis: les facteurs que doivent envisager les leaders en santé canadiens dans la foulée du rapport de la Commission de vérité et réconciliation du Canada.

    PubMed

    McNally, Mary; Martin, Debbie

    2017-03-01

    Les peuples des Premières nations, inuits et métis qui habitent au Canada sont aux prises avec de profondes disparités en matière de santé par rapport aux Canadiens non autochtones, et ce, dans presque toutes les mesures liées à la santé et au bien-être. Pour faire progresser les services de santé auprès des peuples autochtones, il faut passer à l'action dans tous les ordres de prestation des soins et des politiques en santé. Il est donc essentiel que les leaders et les prestataires des établissements, des systèmes et des installations de santé du Canada comprennent et prennent en main les déterminants de la santé propres aux peuples autochtones, y compris l'héritage du colonialisme et le racisme ancien et actuel. La Commission de vérité et réconciliation du Canada est le point de départ pour réagir de manière positive aux injustices.

  17. 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

  18. Applications of molecular Rydberg states in chemical dynamics and spectroscopy

    NASA Astrophysics Data System (ADS)

    Softley, T. P.

    Molecules in high Rydberg states, in which one electron has been excited into a hydrogenic orbital of large mean radius, have many unusual properties compared to ground state molecules. These properties, which are reviewed in this article, make them suitable for a diverse and growing number of applications in chemical dynamics. The most recent methods for studying molecular Rydberg states using high-resolution spectroscopy and theory, including effects of electric fields, are described here. An important feature is the high susceptibility of Rydberg states to external field perturbation which not only has a profound effect on the observable energy levels, spectroscopic intensities and lifetimes, but is also useful for state-selective detection through field ionization. The large dipole moment that can be created in a field is also useful for controlling the motion of molecules in Rydberg states. The applications reviewed here include: ZEKE (zero kinetic energy), MATI (mass-analyzed threshold ionization) and PIRI (photo-induced Rydberg ionization) spectroscopy; pulsed-field recombination of ions and electrons; the state selection and reaction of molecular ions; collisions of Rydberg states with neutrals, ions and metallic surfaces; Rydberg tagging and imaging of products of photodissociation; and the control of translational motion and orientation via the use of inhomogeneous fields.

  19. Infrared Spectroscopy of Ions in Selected Rotational and Spin-Orbit States

    NASA Astrophysics Data System (ADS)

    Jacovella, Ugo; Agner, Josef A.; Schmutz, Hansjürg; Merkt, Frederic

    2016-06-01

    First results are presented obtained using an experimental setup developed to record IR spectra of rotationally state-selected ions. The method we use is a state-selective version of a method developed by Schlemmer et al. to record IR spectra of ions. Ions are produced in specific rotational levels using mass-analysed threshold ionisation (MATI) spectroscopy combined with single-photon excitation of neutral molecules in supersonic expansions with a vacuum-ultraviolet laser. The ions generated by pulsed-field ionisation of Rydberg states of high principal quantum number (n ≈ 200) are extracted toward an octupole ion guide containing a neutral target gas. Prior to entering the octupole the ions are excited by an IR laser. The target gas is chosen so that only excited ions react to form product ions. These product ions are detected mass selectively as function of the IR laser wavenumber. To illustrate this method, we present IR spectra of C_2H_2^+ in selected rotational levels of the ^2Π3/2 and ^2Π1/2 spin-orbit components of the electronic ground state. Schlemmer et al., J. Chem. Phys. 117, 2068 (2002)

  20. 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).

  1. Multi-mode vibronic interactions in the five lowest electronic states of the fluorobenzene radical cation

    NASA Astrophysics Data System (ADS)

    Bâldea, Ioan; Franz, Jan; Szalay, Péter G.; Köppel, Horst

    2006-10-01

    The multi-mode vibronic interactions between the five lowest electronic states of the fluorobenzene radical cation are investigated theoretically, based on ab initio electronic structure data, and employing the linear vibronic coupling model. Low-energy conical intersections, and strong vibronic couplings are found to prevail within the set of X˜-A˜ and B˜-C˜-D˜ cationic states, while the interactions between these two sets of states are found to be rather weak (owing to high-energy conical intersections). The overall intensity distribution of the experimental photoelectron spectrum, as well as the line positions observed in the MATI spectrum, are well reproduced. The vibronic interactions in the X˜-A˜ states are found to be a replica of the multi-mode dynamical Jahn-Teller effect in the parent system, the XE ground state of the benzene radical cation. Ultrafast internal conversion processes within the electronic manifolds in question demonstrate the strength of the nonadiabatic coupling effects and complement the analogous findings for the electronic spectra. The implications for the fluorescence dynamics of the fluorobenzene radical cation are discussed.

  2. Mass analyzed threshold ionization spectroscopy of deuterium substituted N-methylaniline and N-ethylaniline cations: isotope effect on transition energy and large amplitude vibrations

    NASA Astrophysics Data System (ADS)

    Lin, Jieli; Lin, Jung Lee; Tzeng, Wen Bih

    2003-12-01

    We have recorded the resonant two-photon ionization (R2PI) and mass analyzed threshold ionization (MATI) spectra of deuterium substituted N-methylaniline (NMA-d1) and N-ethylaniline (NEA-d1) to investigate the influence of the N-deuteration on the transition energy and the large amplitude alkyl vibration. The origin of the S 1←S 0 electronic transition (EE) and the adiabatic ionization energy (IE) of NMA-d1 are determined to be 33,294 ± 1 and 59,801 ± 5 cm -1, whereas those of NEA-d1 are 33,301 ± 1 and 59,185 ± 5 cm -1, respectively. Comparing these data with those of NMA and NEA suggests that N-deuteration give rise to a blue shift of 2-4 cm -1 in the EE and a red shift of 19-21 cm -1 in the IE. These isotope shifts are little affected by the length of the alkyl group attached to the nitrogen atom. The present results also show that the N-deuteration influences more on the large amplitude motions of the CH 3 torsion, the C 2H 5 bending, and the N-inversion than the localized benzene ring vibrations.

  3. 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.

  4. Le lymphœdème congénital primaire: la maladie de Milroy: à propos du premier cas observé dans le Département de Pédiatrie du Centre Hospitalier Universitaire Yalgado Ouédraogo, Ouagadougou

    PubMed Central

    Ouattara, Chantal Zoungrana; Kalmogho, Angèle; Yonaba, Caroline; Bouda, Chantal Gabrielle; Yaméogo, Ghislaine; Kam, Ludovic

    2017-01-01

    Le lymphœdème est l'accumulation de liquide lymphatique dans les espaces interstitiels, celui de l’enfant, la maladie de Milroy, est rare, héréditaire, autosomique dominante à pénétrance partielle. Nous rapportons un cas de maladie de Milroy chez une fillette de 7 ans vue, pour érysipèle sur grosse jambe droite congénitale. Des antécédents de gros membre congénital existent dans la famille maternelle. L’examen retrouvait une grosse jambe droite oedématiée et douloureuse à la palpation, avec une lichenification de la peau en regard et un érysipèle cutané. Le bilan paraclinique objectivait un lymphœdème cutané avec atteinte vasculaire à type d’ectasie de la saphène droite. Le caryotype de type féminin, était sans anomalie, n’excluant pas des remaniements chromosomiques de petite taille. Le traitement a constitué en une kinésithérapie, des bandages, le port de bas de compression et une psychothérapie. Ce premier cas décrit au Burkina Faso témoigne de la rareté de la pathologie mais surtout des difficultés diagnostiques liées à l’insuffisance des investigations paracliniques. PMID:28748022

  5. 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

  6. 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).

  7. La prévention des blessures chez les enfants et les adolescents : une démarche de santé publique

    PubMed Central

    Yanchar, Natalie L; Warda, Lynne J; Fuselli, Pamela

    2012-01-01

    RÉSUMÉ La majorité des blessures dont sont victimes les enfants et les adolescents sont évitables. Le présent document de principes contient des renseignements généraux, des conseils et une déclaration d’engagement à l’égard de la prévention des blessures au Canada. Il sert de base sur laquelle construire en s’attardant d’abord aux définitions, à l’étendue et aux priorités en matière de prévention des blessures. Il contient également une description du fardeau et du profil des blessures non intentionnelles, de même que les principes d’interventions de prévention efficaces. La version intégrale renferme une liste de ressources en vue d’obtenir des données et de l’information probante (www.cps.ca). Enfin, le présent document de principes peut être utilisé pour la défense généralisée de la prévention des blessures.

  8. 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).

  9. Ethanol-induced liver injury and changes in sulfur amino acid metabolomics in glutathione peroxidase and catalase double knockout mice.

    PubMed

    Kim, Sun J; Lee, Joo W; Jung, Young S; Kwon, Do Y; Park, Hee K; Ryu, Chang S; Kim, Sang K; Oh, Goo T; Kim, Young C

    2009-06-01

    Oxidative stress via generation of reactive oxygen species is suggested to be the major mechanism of alcohol-induced liver injury. We investigated the effects of glutathione peroxidase-1 and catalase double deficiency (Gpx-1(-/-)/Cat(-/-)) on liver injury and changes in the sulfur amino acid metabolism induced by binge ethanol administration. Ethanol (5 g/kg) was administered orally to the wild-type and the Gpx-1(-/-)/Cat(-/-) mice every 12 h for a total of three doses. Mice were sacrificed 6 h after the final dose. The Gpx-1/Cat deficiency alone increased malondialdehyde levels in liver significantly. Hepatic methionine adenosyltransferase (MAT) activity and S-adenosylmethionine levels were decreased, however, glutathione contents were not changed. Ethanol administration to the Gpx-1(-/-)/Cat(-/-) mice increased the elevation of serum alanine aminotransferase activity, plasma homocysteine levels, hepatic fat accumulation and lipid peroxidation compared with the wild-type animals challenged with ethanol. Also the reduction of MAT activity and S-adenosylmethionine levels was enhanced, but MATI/III expression was increased significantly. The results indicate that Gpx-1 and Cat have critical roles in the protection of liver against binge ethanol exposure. Augmentation of ethanol-induced oxidative stress may be responsible for the impairment of the transsulfuration reactions and the aggravation of acute liver injury in the Gpx-1(-/-)/Cat(-/-) mice.

  10. 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

  11. Canadian Contraception Consensus (Part 1 of 4).

    PubMed

    Black, Amanda; Guilbert, Edith; Costescu, Dustin; Dunn, Sheila; Fisher, William; Kives, Sari; Mirosh, Melissa; Norman, Wendy V; Pymar, Helen; Reid, Robert; Roy, Geneviève; Varto, Hannah; Waddington, Ashley; Wagner, Marie-Soleil; Whelan, Anne Marie; Ferguson, Carrie; Fortin, Claude; Kielly, Maria; Mansouri, Shireen; Todd, Nicole

    2015-10-01

    Objectif : Fournir des lignes directrices aux fournisseurs de soins quant à l’utilisation de modes de contraception pour la prévention de la grossesse et quant à la promotion d’une sexualité saine. Issues : Orientation des praticiens canadiens en ce qui concerne l’efficacité globale, le mécanisme d’action, les indications, les contre-indications, les avantages n’étant pas liés à la contraception, les effets indésirables, les risques et le protocole de mise en œuvre des modes de contraception abordés; planification familiale dans le contexte de la santé sexuelle et du bien-être général; méthodes de counseling en matière de contraception; et accessibilité et disponibilité des modes de contraception abordés au Canada. Résultats : La littérature publiée a été récupérée par l’intermédiaire de recherches menées dans MEDLINE et The Cochrane Library entre janvier 1994 et janvier 2015 au moyen d’un vocabulaire contrôlé (p. ex. contraception, sexuality, sexual health) et de mots clés (p. ex. contraception, family planning, hormonal contraception, emergency contraception) appropriés. Les résultats ont été restreints aux analyses systématiques, aux études observationnelles et aux essais comparatifs randomisés / essais cliniques comparatifs publiés en anglais entre janvier 1994 et janvier 2015. Les recherches ont été mises à jour de façon régulière et intégrées à la directive clinique jusqu’en juin 2015. La littérature grise (non publiée) a été identifiée par l’intermédiaire de recherches menées dans les sites Web d’organismes s’intéressant à l’évaluation des technologies dans le domaine de la santé et d’organismes connexes, dans des collections de directives cliniques, dans des registres d’essais cliniques et auprès de sociétés de spécialité médicale nationales et internationales. Valeurs : La qualité des résultats a été évaluée au moyen des critères décrits dans

  12. Canadian Contraception Consensus (Part 2 of 4).

    PubMed

    Black, Amanda; Guilbert, Edith; Costescu, Dustin; Dunn, Sheila; Fisher, William; Kives, Sari; Mirosh, Melissa; Norman, Wendy V; Pymar, Helen; Reid, Robert; Roy, Geneviève; Varto, Hannah; Waddington, Ashley; Wagner, Marie-Soleil; Whelan, Anne Marie; Ferguson, Carrie; Fortin, Claude; Kielly, Maria; Mansouri, Shireen; Todd, Nicole

    2015-11-01

    Objectif : Fournir des lignes directrices aux fournisseurs de soins quant à l’utilisation de modes de contraception pour la prévention de la grossesse et quant à la promotion d’une sexualité saine. Issues : Orientation des praticiens canadiens en ce qui concerne l’efficacité globale, le mécanisme d’action, les indications, les contre-indications, les avantages n’étant pas liés à la contraception, les effets indésirables, les risques et le protocole de mise en œuvre des modes de contraception abordés; planification familiale dans le contexte de la santé sexuelle et du bien-être général; méthodes de counseling en matière de contraception; et accessibilité et disponibilité des modes de contraception abordés au Canada. Résultats : La littérature publiée a été récupérée par l’intermédiaire de recherches menées dans MEDLINE et The Cochrane Library entre janvier 1994 et janvier 2015 au moyen d’un vocabulaire contrôlé (p. ex. contraception, sexuality, sexual health) et de mots clés (p. ex. contraception, family planning, hormonal contraception, emergency contraception) appropriés. Les résultats ont été restreints aux analyses systématiques, aux études observationnelles et aux essais comparatifs randomisés / essais cliniques comparatifs publiés en anglais entre janvier 1994 et janvier 2015. Les recherches ont été mises à jour de façon régulière et intégrées à la directive clinique jusqu’en juin 2015. La littérature grise (non publiée) a été identifiée par l’intermédiaire de recherches menées dans les sites Web d’organismes s’intéressant à l’évaluation des technologies dans le domaine de la santé et d’organismes connexes, dans des collections de directives cliniques, dans des registres d’essais cliniques et auprès de sociétés de spécialité médicale nationales et internationales. Valeurs : La qualité des résultats a été évaluée au moyen des critères décrits dans

  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: Radial velocity curve of 51 Peg (Birkby+, 2017)

    NASA Astrophysics Data System (ADS)

    Birkby, J. L.; de Kok, R. J.; Brogi, M.; Schwarz, H.; Snellen, I. A. G.

    2017-07-01

    Table 1 and span observing dates from 1994 September 15 to 2014 July 9, resulting in 639 radial velocity measurements over 20 years. The table includes the discovery measurements from the ELODIE spectrograph at Observatoire Haute Provence and subsequent additional monitoring. We took these radial velocity measurements from the Naef et al. 2004 (Cat. J/A+A/414/351) compilation. We also included the legacy data set from Lick Observatory observed with the Hamilton spectrograph, taking measurements from the self-consistent reprocessing of all the Lick spectra presented by Fischer et al. 2014 (Cat. J/ApJS/210/5). Finally, we included more recent additional monitoring from the High Resolution Echelle Spectrometer (HIRES) at the Keck Observatory, and extracted RVs from observations with the High Accuracy Radial velocity Planet Searcher (HARPS) at the ESO-3.6m telescope in 2013 (ESO program ID 091.C-0271, PI: Santos). The reduced HARPS spectra were obtained from the ESO Science Archive (http://archive.eso.org/wdb/wdb/adp/phase3_spectral/query). (1 data file).

  15. 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.

  16. Effects of Cu doping on the electronic structure and magnetic properties of MnCo2O4 nanostructures

    NASA Astrophysics Data System (ADS)

    Pramanik, Prativa; Thota, Subhash; Singh, Sobhit; Joshi, Deep Chandra; Weise, Bruno; Waske, Anja; Seehra, M. S.

    2017-10-01

    Reported here are the results and their analysis from our detailed investigations of the effects of Cu doping (x ≤slant 0.2 ) on the electronic structure and magnetic properties of the spinel MnCo2 O4. A detailed comparison is given for the x = 0 and x = 0.2 cases for both the bulk-like samples and nanoparticles. The electronic structure determined from x-ray photoelectron spectroscopy and Rietveld analysis of x-ray diffraction patterns shows the structure to be: (Co3+ )A [Mn3+ Co2+(1-x) Cu2+x ]B O4 i.e. Cu2+ substitutes for Co2+ on the octahedral B-sites. For the bulk samples, the ferrimagnetic T_C= 184 K for x = 0 is lowered to TC = 167 K for the x = 0.2 sample, this decrease being due to the effect of Cu doping. For the nanosize x = 0 (x = 0.2 ) sample, the lower TC = 165 K (TC = 155 K) is observed using \\partial (χdcT)/\\partial T analysis, this lowering being due to finite size effects. For T > TC , fits of dc paramagnetic susceptibility data of χ-1 versus T in nanosize samples to the Néel expression are used to determine the exchange interactions between the A and B sites with exchange constants: JAA / kB ∼ 8.4 K (4.1 K), JBB/kB ∼21.2 K (16.3 K) and JAB / kB ∼ 13.9 K (13.8 K) for x = 0 (0.2) . The temperature dependence of ac susceptibilities χ\\prime(T) and χ\\prime\\prime(T) at different frequencies shows that in bulk samples of x = 0 and x=0.2 , the transition at T C is the normal second order transition. But for the nanosize x = 0 and 0.2 samples, analysis of the ac susceptibilities shows that the ferrimagnetic transition at T C is followed by a re-entrant spin-glass transition at lower temperatures T_SG ∼ 162 K (138 K) for x = 0 (x = 0.20 ). Analysis of the ac susceptibilities, χ\\prime(T) and χ\\prime\\prime(T) , versus T data is done in terms of two scaling laws: (i) Vogel–Fulcher law [τ = τo \\exp(Ea/(kB(T-To)))] ; and (ii) power law of critical slowing-down τ / τo = [(TP/TSG)-1]-zν . These fits confirm the existence

  17. 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.

  18. 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

  19. VizieR Online Data Catalog: ALMA survey of protoplanetary disks in sigma Ori (Ansdell+, 2017)

    NASA Astrophysics Data System (ADS)

    Ansdell, M.; Williams, J. P.; Manara, C. F.; Miotello, A.; Facchini, S.; van der Marel, N.; Testi, L.; van Dishoeck, E. F.

    2017-08-01

    Our sample consists of the 92 Young Stellar Objects (YSOs) in σ Orionis with infrared excesses consistent with the presence of a protoplanetary disk. hese sources are identified by cross-matching the Class II and transition disk (TD) candidates from the Spitzer survey of Hernandez et al. 2007 (Cat. J/ApJ/662/1067) with the Mayrit catalog (Caballero 2008, Cat. J/A+A/478/667). Both catalogs are expected to be complete down to the brown dwarf limit. Disk classifications are based on the Spitzer/Infrared Array Camera (IRAC) Spectral Energy Distribution (SED) slope, as described in Hernandez et al. 2007 (Cat. J/ApJ/662/1067). We also include in our sample a Class I disk (source 1153), as it is located near the Spitzer/IRAC color cutoff for Class II disks. Our Band 6 Atacama Large Millimeter/sub-millimeter Array (ALMA) observations were obtained on 2016 July 30 and 31 during Cycle 3 (Project ID: 2015.1.00089.S; PI: Williams). The array configuration used 36 and 37 12m antennas on July 30 and 31, respectively, with baselines of 15-1124m on both runs. The correlator setup included two broadband continuum windows centered on 234.293 and 216.484GHz with bandwidths of 2.000 and 1.875GHz and channel widths of 15.625 and 0.976MHz, respectively. The bandwidth-weighted mean continuum frequency was 225.676GHz (1.33mm). The spectral windows covered the 12CO (230.538GHz), 13CO (220.399GHz), and C18O (219.560GHz) J=2-1 transitions at velocity resolutions of 0.16-0.17km/s. These spectral windows were centered on 230.531, 220.392, and 219.554GHz with bandwidths of 11.719MHz and channel widths of 0.122MHz. On-source integration times were 1.2 minutes per object for an average continuum rms of 0.15mJy/beam (Table1). This sensitivity was based on the James Clerk Maxwell Telescope (JCMT)/Submillimeter Common User Bolometer Array (SCUBA)-2 survey of σ Orionis disks by Williams et al. 2013 (Cat. J/MNRAS/435/1671), who found that stacking their individual non-detections revealed a mean 850

  20. VizieR Online Data Catalog: Solar neighborhood. XXXVII. RVs for M dwarfs (Benedict+, 2016)

    NASA Astrophysics Data System (ADS)

    Benedict, G. F.; Henry, T. J.; Franz, O. G.; McArthur, B. E.; Wasserman, L. H.; Jao, W.-C.; Cargile, P. A.; Dieterich, S. B.; Bradley, A. J.; Nelan, E. P.; Whipple, A. L.

    2017-05-01

    During this project we observed with two Fine Guidance Sensor (FGS) units: FGS 3 from 1992 to 2000, and FGS 1r from 2000 to 2009. FGS 1r replaced the original FGS 1 during Hubble Space Telescope (HST) Servicing Mission 3A in late 1999. We included visual, photographic, and CCD observations of separations and position angles from Geyer et al. 1988AJ.....95.1841G for our analysis of GJ 65 AB. We include a single observation of G 193-027 AB from Beuzit et al. 2004A&A...425..997B, who used the Adaptive Optics Bonnette system on the Canada-France-Hawaii Telescope (CFHT). For GJ 65 AB we include five Very Large Telescope/NAos-COnica (VLT/NACO) measures of position angle and separation (Kervella et al. 2016A&A...593A.127K). For our analysis of GJ 623 AB, we included astrometric observations (Martinache et al. 2007ApJ...661..496M) performed with the Palomar High Angular Resolution Observer (PHARO) instrument on the Palomar 200in (5m) telescope and with the Near InfraRed Camera 2 (NIRC2) instrument on the Keck II telescope. Separations have typical errors of 2mas. Position angle errors average 0.5°. Measurements are included for GJ 22 AC from McCarthy et al. 1991AJ....101..214M and for GJ 473 AB from Henry et al. 1992AJ....103.1369H and Torres et al. 1999AJ....117..562T, who used a two-dimensional infrared speckle camera containing a 58*62 pixel InSb array on the Steward Observatory 90in telescope. We also include infrared speckle observations by Woitas et al. 2003A&A...406..293W, who obtained fourteen separation and position angle measurements for GJ 22 AC with the near-infrared cameras MAGIC and OMEGA Cass at the 3.5m telescope on Calar Alto. We also include a few speckle observations at optical wavelengths from the Special Astrophysical Observatory 6m Bolshoi Azimuth Telescope (BTA) and 1m Zeiss (Balega et al. 1994, Cat. J/A+AS/105/503), from the CFHT (Blazit et al. 1987) and from the Differential Speckle Survey Instrument (DSSI) on the Wisconsin, Indiana, Yale

  1. 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

  2. Obstetrical and neonatal outcomes of methadone-maintained pregnant women: a canadian multisite cohort study.

    PubMed

    Ordean, Alice; Kahan, Meldon; Graves, Lisa; Abrahams, Ron; Kim, Theresa

    2015-03-01

    Objectif : Décrire les issues obstétricales et néonatales, y compris le syndrome d’abstinence néonatal (SAN), au sein d’une cohorte canadienne de femmes enceintes recevant un traitement de substitution à la méthadone. Méthodes : Nous avons mené une analyse de dossiers rétrospective au sein de trois programmes de soins intégrés à Vancouver, à Toronto et à Montréal. Les femmes enceintes recevant un traitement de substitution à la méthadone (TSM) qui ont sollicité les services de ces programmes entre 1997 et 2009 ont été admises à cette étude multisite. Les issues maternelles et néonatales constatées au sein de chacun des centres participants ont été comparées. Résultats : En tout, 94 femmes enceintes recevant un traitement de substitution à la méthadone ont été admises à l’analyse finale : 36 de Toronto, 36 de Vancouver et 22 de Montréal. Les caractéristiques démographiques maternelles ont révélé la présence de différences entre les programmes en matière d’ethnicité et d’état matrimonial. Les complications obstétricales n’ont pas été fréquentes : la plus fréquente a été l’hémorragie prénatale, laquelle a été constatée chez 14 % des femmes de la cohorte entière. L’incidence du travail prématuré était considérablement plus élevée à Vancouver et à Montréal qu’à Toronto. Pour l’ensemble de la cohorte, l’âge gestationnel moyen au moment de l’accouchement a été de 38 semaines; le poids denaissance moyen a été de 2 856 grammes. La durée moyenne de l’hospitalisation des nouveau-nés présentant un SAN a été de 19 jours, 27 % d’entre eux ayant nécessité une pharmacothérapie pour contrer le SAN. Environ 60 % des nouveau-nés ont été remis à leur mère à la suite de l’obtention de leur congé de l’hôpital. Conclusion : Les programmes de soins intégrés ont permis l’obtention d’issues obstétricales et néonatales satisfaisantes chez les femmes

  3. Magnetostratigraphy of the Miocene sediments at Háj u Duchcova and Sokolov (West Bohemia)

    NASA Astrophysics Data System (ADS)

    Schnabl, Petr; Man, Otakar; Matys Grygar, Tomáš; Mach, Karel; Kdýr, Šimon; Čížková, Kristýna; Pruner, Petr; Martínek, Karel; Rojík, Petr

    2017-04-01

    normal polarity (69 - 80 m) was found. Above that, after a small gap of magnetically disturbed sediments, there are 60 meters of sediments with reverse polarity (62 - 2 m) with short normal excursion at the upper half (24 - 17 m). According to the detailed analysis of drill core HK591 (Matys Grygar et al. 2014), we suppose, that the succession begins in C5En (only JP-585-10), then C5Dr. Validity of subzone C5Dr.1n in the drills JP-585-10 and DP-333-09 is still under discussion. The zone C5Cr could be found only in the HD-50 core. In comparison of the interpreted polarities with ATNTS2012 the time span in the studied cores is approximately 17.5 to 17.9 Ma for DP-333-09, 17.8 to 18.1 for JP-585-[2]10 and 17.1 to 17.7 Ma for HD-50. Additional investigation should be done. The research was supported by Czech Science Foundation GAČR, project n. 16-00800S. Matys Grygar, T., Mach, K., Pruner, P., Schnabl, P., Laurin, J., Martinez, M., 2014. A lacustrine record of the early stage of the Miocene Climatic Optimum in Central Europe from the Most Basin, Ohře (Eger) Graben, Czech Republic, Geol. Mag. 151 (6), 1013-1033.

  4. Evaluation of tuberculin skin testing in tuberculosis contacts in Victoria, Australia, 2005-2013.

    PubMed

    Moyo, N; Tay, E L; Denholm, J T

    2015-09-21

    Objectif : Revoir l'utilisation par les programmes du test cutané à la tuberculine (TST) après exposition à la tuberculose (TB) dans l'état de Victoria, en Australie.Méthode : Une revue rétrospective des données recueillies pour la surveillance en matière de santé publique a été réalisée afin d'identifier les caractéristiques démographiques des contacts, notamment le statut en matière du vaccin bacille Calmette-Guérin et l'âge et le résultat du TST.Résultats : La recherche des contacts a été réalisée auprès de 15 094 personnes dont 13 427 (89.0%) ont eu un TST. Le TST a été positif chez 31,4% (95%IC 30,6–32,2) de tous les contacts et chez 48,8% des contacts nés hors d'Australie. Parmi les contacts qui ont été TST négatifs au départ, le taux de conversion après exposition a été de 14,8%. La conversion a été plus fréquente chez les personnes âgées de 45–54 ans, avec <12% de positivité à la fois dans les tranches d'âge les plus jeunes (<5 ans) et les plus âgées (⩾65 ans). Une TB active s'est développée chez 1,1% de tous les contacts. Cependant, les contacts âgés de <5 ans ont eu le risque le plus élevé de développer une TB active après exposition (3,8%), tandis que le risque a été le plus faible chez les personnes âgées de ⩾65 ans (0,3%).Conclusion : Dans l'ensemble, la recherche de contacts et le TST réalisés dans ce contexte semblent aboutir à une proportion élevée de personnes à risque de développer une TB active. Le rendement du dépistage dans certains groupes, en particulier ceux âgés de ⩾65 ans, a été faible, et il faudrait envisager des stratégies alternatives d'investigation.

  5. 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

  6. The role of serum testosterone in early pregnancy outcome: a comparison in women with and without polycystic ovary syndrome.

    PubMed

    Lathi, Ruth B; Dahan, Michael H; Reynolds-May, Margaret F; Milki, Amin A; Behr, Barry; Westphal, Lynn M

    2014-09-01

    Objectif : Chez les femmes, les troubles liés à l’hyperandrogénie sont associés à des taux accrus de fausse couche. Toutefois, le rôle particulier que joue la testostérone maternelle aux débuts de la grossesse et l’influence qu’elle exerce sur l’issue de la grossesse restent inconnus. L’objectif de la présente étude était de comparer les taux sériques de testostérone aux débuts de la grossesse chez des femmes qui, en présence ou non d’un syndrome d’ovaires polykystiques (SOPK), avaient connu soit une grossesse réussie, soit une fausse couche. Méthode : Nous avons prélevé des échantillons sériques chez des femmes qui fréquentaient un centre de fertilité universitaire, au moment de l’obtention de leur premier résultat positif au test de grossesse fondé sur le taux sérique de bêta-gonadotropine chorionique humaine. Les échantillons ont ensuite été analysés en vue d’établir le taux total de testostérone. Nous avons utilisé un modèle de régression logistique pour neutraliser l’effet du diagnostic de SOPK, de l’IMC et de l’âge. Résultats : Des taux totaux de testostérone étaient disponibles pour 346 grossesses (286 grossesses réussies et 78 fausses couches au premier trimestre). Nous n’avons constaté aucune différence en matière de taux total de testostérone entre les femmes qui ont été en mesure de poursuivre leur grossesse (concentration moyenne de 3,6 ± 2,6 nmol/l) et les femmes qui ont connu une fausse couche (moyenne de 3,6 ± 2,4 nmol/l). En ayant recours aux critères de Rotterdam pour identifier les femmes présentant un SOPK, nous avons constaté qu’il n’existait également aucune différence en matière de taux sérique de testostérone entre les femmes qui ont pu poursuivre leur grossesse et celles qui ont connu une fausse couche, qu’il y ait eu présence d’un SOPK (P = 0,176) ou non (P = 0,561). Conclusions : Les résultats que nous avons obtenus démontrent que les taux de

  7. Decision makers' allocation of home-care therapy services: a process map.

    PubMed

    Mohammed, Rakib; Poss, Jeff; Egan, Mary; Rappolt, Susan; Berg, Katherine

    2013-01-01

    Objectif : Explorer les mécanismes actuels de prise de décision en matière de répartition des services de physiothérapie et d'ergothérapie dans les soins à domicile pour les clients aux besoins complexes nécessitant des soins à domicile à long terme en Ontario. Méthode : Une étude exploratoire à l'aide d'entrevues auprès d'intervenants clés et de vignettes a été réalisée auprès des décideurs en matière de soins à domicile (gestionnaires de cas et personnel de direction) dans quatre régions de soins à domicile de l'Ontario. Les données des entrevues ont été analysées à l'aide d'une méthode dite de « l'analyse des structures ». Résultats : La prise de décision pour la répartition des services de thérapie comporte quatre étapes: admission, évaluation, acheminement vers le fournisseur de services et réévaluation. Certaines disparités dans les processus de gestion ont toutefois été observées à chacune des étapes. La principale variation se situait dans le processus visant à établir la quantité de services de thérapie dans les diverses régions, en raison principalement des contraintes financières touchant les programmes de soins à domicile. La méthode de financement du gouvernement et les modes de partage de l'information ont aussi des effets considérables sur la répartition des soins à domicile. Conclusion : Les contraintes financières des soins à domicile constituent le principal facteur contextuel affectant la répartition des services de thérapie dans les divers secteurs de soins à domicile. Compte tenu de l'inflation dans les coûts des soins de santé, de nouveaux modèles de financement et de prestation des services devront être créés afin de s'assurer que la bonne personne reçoit les bons soins avant que son état ne se détériore et qu'il ne nécessite des soins à long terme encore plus coûteux.

  8. 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

  9. 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

  10. Cardiovascular risk reduction and weight management at a hospital-based postpartum preeclampsia clinic.

    PubMed

    Janmohamed, Rahim; Montgomery-Fajic, Erin; Sia, Winnie; Germaine, Debbie; Wilkie, Jodi; Khurana, Rshmi; Nerenberg, Kara A

    2015-04-01

    Objectif : Les femmes qui en viennent à connaître une prééclampsie pendant la grossesse sont exposées à un risque élevé d’en venir par la suite à présenter des maladies chroniques, dont la maladie cardiovasculaire prématurée. Nous avons mis sur pied une clinique interdisciplinaire qui vise à prévenir la maladie cardiovasculaire par l’offre de services de counseling pédagogique axés sur les modifications à apporter au mode de vie aux débuts de la période postpartum. Cette étude avait pour objectif d’évaluer les modifications du poids et des facteurs de risque cardiovasculaire chez les participantes, après six mois de consultations à la clinique. Méthodes : Nous avons mené une analyse rétrospective des dossiers des femmes dont la grossesse avait été compliquée par la prééclampsie et qui avaient par la suite fréquenté la Postpartum Preeclampsia Clinic. Pour déterminer les paramètres de départ, les participantes à l’étude ont été soumises à des évaluations du mode de vie, à des examens physiques et à des analyses de laboratoire. Des objectifs personnalisés en matière de réduction du risque cardiovasculaire et de modification du mode de vie ont été établis, le tout étant axé sur l’activité physique et les modifications du régime alimentaire. La modification du poids constituait le critère d’évaluation principal. Résultats : Au cours de la période d’étude, 21 femmes ont fait l’objet d’un suivi d’une durée minimale de six mois. À 4,4 ± 1,4 mois postpartum en moyenne (± σ), les participantes présentaient une amélioration non significative en matière de poids (perte pondérale moyenne de 0,4 ± 4,5 kg) et d’IMC (diminution moyenne de l’IMC de 0,1 ± 1,7 kg/m2). Le niveau d’activité physique a connu une amélioration significative, passant de 14 % des participantes pratiquant des activités physiques avant la grossesse à 76 % après 4,4 mois postpartum en moyenne

  11. VizieR Online Data Catalog: Deep Objective-Prism Survey for LMC Members (Sanduleak 1970)

    NASA Astrophysics Data System (ADS)

    Sanduleak, N.

    2008-02-01

    The catalog contains 1273 proven or probable Large Magellanic Cloud (LMC) members, identified on plates taken with the Curtis-Schmidt telescope at Cerro Tololo Inter-American Observatory in Chile. The stars are generally brighter than photographic magnitude 14 and are identified on charts published by Hodge and Wright (1967) and reproduced in the source publication (1970CoTol..89....1S). Approximate spectral types were determined by examination of the 580 Angstroms/mm (at H{gamma}) objective-prism spectra; approximate 1975 positions were obtained by measuring relative to the 1975 coordinate grids on the Uppsala-Mount Stromlo Atlas of the LMC (Gascoigne and Westerlund 1961), and approximate photographic magnitudes were determined by averaging image density measures from the plates and image-diameter measures on the "B" charts of Hodge and Wright (1967SAOP.4699....1H). The catalog includes an identification number (Sk), HD(E) number, Cape Photographic Durchmusterung number, right ascension and declination (equinox B1975), spectral type, photographic magnitude, and alternate identifications. The machine version, updated in September 1986, includes corrections supplied by the author in 1985; thus, it differs somewhat from the published version. Accurate positions, and cross-identifications with the modern surveys, were determined by Brian Skiff in 2008, and make up the "sk_pos.dat" file. This work is based on a file prepared through great effort by Mati Morel in 1999. Brian Skiff examined every object on DSS cut-outs to make sure the star chosen matched the Sanduleak charts. The Goddard SkyView utility was used, looking at an 0.07{deg} (4'x4') field from the DSS1 (short-V plate), DSS2 far-red, and 2MASS J-band images. These three have the shallowest effective exposure (these are bright stars!), and usually the best image quality to check for companions etc as well as star colors. Precise coordinates were then obtained via VizieR mainly from UCAC2, but occasionally

  12. GIS-based Identification of Urban Residential Hotspots to Flooding and the Quantification of the Uncertainties for two African Cities

    NASA Astrophysics Data System (ADS)

    Jalayer, Fatemeh; De Risi, Raffaele; De Paola, Francesco; Iervolino, Iunio; Giugni, Maurizio; Topa, Maria Elena; Yonas, Nebyou; Nebebe, Alemu; Kibassa, Deusdedit; Cavan, Gina; Renner, Florian; Lindley, Sarah

    2013-04-01

    . 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., Nebebe, A., Woldegerima, T., Shemdoe, R., Kibassa, D., Pauleit, S., Renner, R., Printz, A., Buchta, K., Coly, A., Sall, F., Ndour, N. M., Ouédraogo, Y., Samari, B. S., Sankara, B. T., Feumba, R. A., Ngapgue, J. N., Ngoumo, M. T., Tsalefac, M., Tonye, E. (2012) Green infrastructure maps for selected case studies and a report with an urban green infrastructure mapping methodology adapted to African cities CLUVA project deliverable D2.7. Available at http://www.cluva.eu/deliverables/CLUVA_D2.7.pdf. Date last accessed, Dec. 18th 2012

  13. 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

  14. CCQM-K104 key comparison (avermectin B1a) on the characterization of organic substances for chemical purity

    NASA Astrophysics Data System (ADS)

    Dai, Xinhua; Zhang, Wei; Li, Hongmei; Huang, Ting; Li, Mengwan; Quan, Can; Zhang, Qinghe; Davies, Stephen R.; Warren, John; Lo, Man-fung; Kakoulides, Elias; Ceyhan Gören, Ahmet; Marbumrung, Sornkrit; Pfeifer, Dietmar; Ün, İlker; Gündüz, Simay; Yilmaz, Hasibe; Kankaew, Pornhatai; Sudsiri, Nittaya; Shearman, Kittiya; Pookrod, Preeyaporn; Polzer, Joachim; Radeck, Wolfgang

    2017-01-01

    Under the Comité Consultatif pour la Quantité de Matière (CCQM), a key comparison, CCQM-K104, was coordinated by the National Institute of Metrology (NIM). The comparison was designed to demonstrate a laboratory's performance in determining the mass fraction of the main component in a complex high purity organic material. Nine NMIs or DIs participated in the comparison. Eight participants reported their results. An additional impurity was resolved from the avermectin B1a peak and was tentatively identified as an unknown impurity by NMIA (National Measurement Institute (Australia)). It was subsequently identified by NIM as a diastereoisomer of avermectin B1a at the C-26 position. Final reference value (KCRV) = 924.63 mg/g, with uncertainty (k=1) = 3.89 mg/g, and expanded uncertainty = 8.97 mg/g. The degrees of equivalence with the avermectin B1a KCRV for each participant were reported. The measurement results and degrees of equivalence should be indicative of the performance of a laboratory's measurement capability for the purity assignment of organic compounds of high structural complexity (relative molecular mass range of 500 Da -1000 Da and low polarity (-log KOW <= -2). 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 (CIPM MRA).

  15. Standardissimo. Les limitations théoriques du Modèle Standard. Quelles réponses y apporter?

    NASA Astrophysics Data System (ADS)

    Renard, F. M.

    Nous présentons I 'état du Modèle Standard des interactions fortes, faibles et électromagnétiques. Après une description rapide de ses 3 secteurs, secteur de jauge (radiation), secteur fermionique (matière) et secteur scalaire (génération des masses), nous insistons sur le grand nombre de paramètres libres et sur les choix arbitraires qu'il a fallu faire dans l'élaboration du modèle. Nous faisons ressortir les problèmes techniques non résolus et nous dressons la liste des questions fondamentales restées sans réponses. Nous passons ensuite en revue les idées et méthodes proposées pour répondre à ces questions. Elles utilisent essentiellement 3 voies différentes. La première consiste à requérir plus de symétrie (extension du modèle, symétrie Gauche-Droite, Grandes Unifications, Supersymétrie,...). La seconde contient les diverses alternatives au Modèle Standard impliquant des modifications dans certains secteurs (par exemple le secteur scalaire avec le modèle de la Technicouleur) ou de façon plus violente l'hypothèse d'une sous-structure des leptons, des quarks et des bosons W et Z eux-mêmes. Une dernière voie cherche à justifier les particularités du Modèle Standard et relier ses paramètres libres en se basant sur des principes de cohérence interne du modèle. Les conséquences observables de ces diverses approches sont dans chaque cas mentionnées.

  16. Considérations nosographiques sur le délire d'infestation parasitaire à travers trois observations cliniques

    PubMed Central

    Berhili, Nabil; Bout, Amine; Hlal, Hayat; Aarab, Chadya; Aalouane, Rachid; Rammouz, Ismail

    2016-01-01

    Le syndrome d'Ekbom, ou délire d'infestation parasitaire, est une pathologie rare, caractérisée par la conviction inébranlable d'avoir une peau infestée d'insectes ou de parasites. Il s'agit d'un délire monothématique à mécanisme hallucinatoire qui touche typiquement les femmes d’âge avancé. Nous rapportons les cas de trois patients qui présentent un délire d'infestation parasitaire dans des contextes cliniques différents. Le premier patient souffre d'un délire d'infestation isolé correspondant à la forme décrite par Karl Ekbom. Le deuxième cas présente un délire d'infestation secondaire, s'inscrivant dans le cadre d'une leuco-encéphalopathie de type CADASIL. Enfin, le troisième patient se présente dans un tableau évocateur d'un épisode dépressif avec une caractéristique psychotique qui intègre le délire d'infestation. Ces trois vignettes cliniques illustrent parfaitement le caractère trans-nosographique de ce syndrome ainsi que les difficultés de prise en charge de ces patients, tant au niveau de l'alliance thérapeutique que sur le plan des choix en matière de traitement pharmacologiques. PMID:27642468

  17. 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).

  18. Evaluation of the combined measurement uncertainty in isotope dilution by MC-ICP-MS.

    PubMed

    Fortunato, G; Wunderli, S

    2003-09-01

    The combination of metrological weighing, the measurement of isotope amount ratios by a multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS) and the use of high-purity reference materials are the cornerstones to achieve improved results for the amount content of lead in wine by the reversed isotope dilution technique. Isotope dilution mass spectrometry (IDMS) and reversed IDMS have the potential to be a so-called primary method, with which close comparability and well-stated combined measurement uncertainties can be obtained. This work describes the detailed uncertainty budget determination using the ISO-GUM approach. The traces of lead in wine were separated from the matrix by ion exchange chromatography after HNO(3)/H(2)O(2) microwave digestion. The thallium isotope amount ratio ( n((205)Tl)/ n((203)Tl)) was used to correct for mass discrimination using an exponential model approach. The corrected lead isotope amount ratio n((206)Pb)/ n((208)Pb) for the isotopic standard SRM 981 measured in our laboratory was compared with ratio values considered to be the least uncertain. The result has been compared in a so-called pilot study "lead in wine" organised by the CCQM (Comité Consultatif pour la Quantité de Matière, BIPM, Paris; the highest measurement authority for analytical chemical measurements). The result for the lead amount content k(Pb) and the corresponding expanded uncertainty U given by our laboratory was:k(Pb)=1.329 x 10-10mol g-1 (amount content of lead in wine)U[k(Pb)]=1.0 x 10-12mol g-1 (expanded uncertainty U=kxuc, k=2)The uncertainty of the main influence parameter of the combined measurement uncertainty was determined to be the isotope amount ratio R(206,B) of the blend between the enriched spike and the sample.

  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. Outburst of the recurrent nova V745 Sco

    NASA Astrophysics Data System (ADS)

    Waagen, Elizabeth O.

    2014-02-01

    The outburst of the recurrent nova V745 Sco (Nova Sco 1937) by Rod Stubbings (Tetoora Road, VIC, Australia) at visual magnitude 9.0 on 2014 February 6.694 UT is reported. This recurrent nova is fading quickly. Follow-up observations of all types (visual, CCD, DSLR) are strongly encouraged, as is spectroscopy; fast time-series of this nova may be useful to detect possible flaring activity as was observed during the outburst of U Scorpii in 2010. Coincident time-series by multiple observers would be most useful for such a study, with a V-filter being preferred. Observations reported to the AAVSO International Database show V745 Sco at visual mag. 10.2 on 2014 Feb. 07.85833 UT (A. Pearce, Nedlands, W. Australia). 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. Previous outbursts occurred in 1937 and 1989. The 1937 outburst was detected in 1958 (in decline at magnitude 11.0 on 1937 May 11.1 UT; outburst had occurred within the previous 19 days) by Lukas Plaut on plates taken by Hendrik van Gent at the Leiden Observatory; the object was announced as Nova Sco 1937 and later assigned the GCVS name V745 Sco. The 1989 outburst was detected on 1989 August 1.55 UT by Mati Morel (MMAT, Thornton, NSW, Australia) at visual magnitude 10.4 and in decline. Dr. Bradley Schaefer (Louisiana State University) reports (2010ApJS..187..275S) in his comprehensive analysis of the 10 known galactic recurrent novae (including V745 Sco) that the median interval between recurrent novae outbursts is 24 years. The interval since the 1989 outburst of V745 Sco is 24.10 years. See the Alert Notice for additional visual and multicolor photometry and for more details.

  1. 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.

  2. 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

  3. Volvulus du mesentere sur lipome mesenterique: à propos d’un cas

    PubMed Central

    Dème, Hamidou; Badji, Nfally; Akpo, Léra Géraud; Touré, Mouhamed Hamine; Draha, Ronald; Niang, Fallou Gallas; Diop, Abdoulaye Dione; Niang, El Hadj

    2016-01-01

    Nous rapportons le cas d'une patiente de 7 ans qui a consulté pour une douleur abdominale aigue paroxystique siégeant au niveau de l'épigastre associée à des vomissements sans arrêt des matières et des gaz. L'examen clinique ainsi que le bilan biologique étaient sans particularité. L'échographie abdominale demandée en première intention a montré une masse du flanc et de la fosse iliaque droite échogène, homogène à contours réguliers sans signal vasculaire au Doppler associée à un signe du tourbillon des vaisseaux mésentériques. A la tomodensitométrie cette masse correspondait à une formation lipomateuse, bien limitée, exerçant un effet de masse sur le cœcum avec volvulus du mésentère au contact. La disposition des vaisseaux mésentériques à leur origine était normale. Le diagnostic de volvulus du mésentère sur lipome a été retenu. La prise en charge chirurgicale et l'analyse anatomopathologique de la pièce opératoire a confirmé le diagnostic. Nous allons à travers ce cas clinique revoir l'apport de l'échographie et du scanner dans le diagnostic de volvulus du mésentère. PMID:28250879

  4. Analyse des hydrocarbures et des acides gras dans les sédiments superficiels prélevés à proximité du rejet des eaux usées de la zone industrielle de la ville d'El Jadida (Côte Atlantique Marocaine)

    NASA Astrophysics Data System (ADS)

    Lançar, I. T.; Bouchry, N.; Tabyaoui, B.; Mille, G.; Doumenq, P.

    1999-03-01

    Marine sediments collected near the El Jadida industrial sewage (Moroccan Atlantic Coastal) have been analysed in order to determine and to compare the amounts of : extractable organic matter, saturated and aromatic hydrocarbons and fatty acids. The quantitative and qualitative analysis of hydrocarbons (saturated and aromatics) is useful to know the origine of these compounds. Generally, petroleum hydrocarbons are predominant, but biogenic hydrocarbons are also present. The analysis are conducted by capillary gas chromatography, capillary gas chromatography/mass spectrometry and U.V. fluorescence (synchronous excitation) methods. Des sédiments marins prélevés sur le littoral d'El Jadida, à proximité d'une zone de rejet industriel, ont été analysés afin de déterminer et de comparer le taux de matière organique extractible, d'hydrocarbures saturés et aromatiques et d'acides gras. Les résultats des études qualitatives et quantitatives des hydrocarbures (saturés et aromatiques) permettent de déterminer l'origine des hydrocarbures présents dans les sédiments. Les hydrocarbures d'origine pétrolière sont généralement prédominants. Les analyses sont réalisées par chromatographie en phase gazeuse, par couplage chromatographie en phase gazeuse-spectrométrie de masse et par fluorescence U.V. (technique d'excitation -émission synchrones).

  5. Mental Health and Service Issues Faced by Older Immigrants in Canada: A Scoping Review.

    PubMed

    Guruge, Sepali; Thomson, Mary Susan; Seifi, Sadaf Grace

    2015-12-01

    RÉSUMÉ Une population vieillissante et la croissance de la population sur la base de l'immigration nécessitent que la recherche, la pratique et la politique doivent se concentrer sur la santé mentale des immigrants âgés, surtout parce que leur santé mentale semble se détériorer au fil du temps. Cette revue se concentre sur: Qu'est-ce que l'on sait sur les déterminants sociaux de la santé mentale chez les immigrants âgés, et quels sont les obstacles à l'accès aux services de santé mentale confrontés par les immigrants âgés? Les résultats révèlent que (1) les déterminants sociaux décisifs de la santé mentale sont la culture, le sexe et les services de santé; (2) que les immigrants plus âgés utilisent les services de santé mentale de moins que leurs homologues nés au Canada à cause des obstacles tels que, par exemple, les croyances et les valeurs culturelles, un manque de services culturellement et linguistiquement appropriées, des difficultés financières, et l'âgisme; et (3) quelles que soient les sous-catégories dans cette population, les immigrants âgés éprouvent des inégalités en matière de la santé mentale. La preuve des recherches disponibles indique que de combler les lacunes des service de santé mentale devrait devenir une priorité pour la politique et la pratique du système de soins de santé au Canada.

  6. Preface

    NASA Astrophysics Data System (ADS)

    Organizing Committee of the 4th EWPM

    2005-06-01

    necessary facilities. Special acknowledgements are due to the technical and administrative staff of the "Laboratoire de Physicochimie de la Matière Condensée" (LPMC UMR CNRS 5617) for their efficient help during this meeting.

  7. CCQM-K103 key comparison melanine in milk powder

    NASA Astrophysics Data System (ADS)

    Li, Xiuqin; Zhang, Qinghe; Li, Hongmei; Li, Mengwan; Wong, Siu-kay; Lee, Foo-Wing; Kakoulides, Elias; Naujaus, Evaldas; Fernandes-Whaley, Maria; Prevoo-Franzsen, Des; Quinn, Laura; Pookrod, Preeyaporn; Konopelko, Leonid

    2017-01-01

    Under the Comité Consultatif pour la Quantité de Matière (CCQM), a key comparison, CCQM-K103, was coordinated by the National Institute of Metrology (NIM) and Government Laboratory, Hong Kong, China (GLHK). The comparison was designed to demonstrate NMIs/DIs ability to analyze traces of melamine in milk and milk powder at concentration levels resulting from requirements for food safety. Seven NMIs or DIs participated in the comparison. Final reference value (KCRV) is 0.286 mg/kg, with standard uncertainty of the median as 0.011 mg/kg (3.8 %). The k-factor for the estimation of the expanded uncertainty was chosen as k = 2.57 ( t (0.05;5) ), thus the expanded uncertainty is 0.028 mg/kg (9.8%). The degrees of equivalence with melamine in milk powder KCRV for each participant were reported. The measurement results and degrees of equivalence should be indicative of the performance of a laboratory's measurement capability for IDMS in determining mass fractions in the range from 0.1 to 5.0 mg/kg of analytes with low molar mass (range 50-300 Da) with high polarity (pKow > -2.0) in milk and milk products. Extension to other analytes and matrices should be applied with care since there is a close linkage to other relevant parameters as e.g. sample preparation procedures (liquid/liquid extraction, SPE clean-up) and analytical separation techniques (e.g., GC-MS, LC-MS/MS etc). 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 (CIPM MRA).

  8. 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.

  9. Astronomie Flammarion, Vols. 1+2.

    NASA Astrophysics Data System (ADS)

    Rösch, J.; Wlérick, G.; Guibert, J.; Bonnet, R.; Vedrenne, G.; Celnikier, L.; Morando, B.; Boischot, A.; Brahic, A.; Kandel, R.; Dumont, S.; Praderie, F.; Magnan, C.; Gerbaldi, M.; Zahn, J.-P.; Gouguenheim, L.; Bottinelli, L.; Heidmann, N.; Heidmann, J.; Véron, P.; Nottale, L.; Pecker, J.-C.; Golay, M.

    Contents: L'astronomie à l'œil nu (J. Rösch). L'astronomie optique; de Galilée à la fin du XXe siècle (G. Wlérick). Télescopes et lunettes du XXe siècle (G. Wlérick). La radioastronomie (J. Guibert). L'astronomie spatiale (R. Bonnet). L'astronomie des hautes énergies (G. Vedrenne). L'exploration in situ dumilieu astronomique (L. Celnikier). Le système solaire: généralités (B. Morando). Les planètes telluriques (L. Celnikier). Astéroïdes, comètes et météorites (L. Celnikier). Jupiter (A. Boischot). Le monde de Saturne (A. Brahic). Les confins du système solaire (Uranus, Neptune et Pluton) (A. Brahic). Le Soleil, les planètes, la Terre (R. Kandel). Le Soleil, étoile typique (S. Dumont). Les spectres stellaires: la connaissance des étoiles (F. Praderie). L'interaction des étoiles et du milieu environnant (C. Magnan). La Galaxie: étoiles et matière interstellaire (M. Gerbaldi). L'évolution des étoiles (J.-P. Zahn). Les facteurs de l'évolution galactique (L. Gouguenheim). Forme et classification des galaxies (L. Bottinelli, N. Heidmann). Amas et superamas de galaxies (J. Heidmann). Les quasars (P. Véron). Évolution des galaxies (L. Gouguenheim). Les faits cosmologiques (L. Bottinelli). La cosmologie de la grandeexplosion (L. Nottale). Le débat cosmologique (L. Nottale).

  10. 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.

  11. Le défi de la recherche sur les médicaments et du traitement des enfants au Canada

    PubMed Central

    Rieder, Michael J

    2011-01-01

    RÉSUMÉ Les enfants ont toujours été des « orphelins thérapeutiques ». De nombreux médicaments n’ont pas fait l’objet d’études auprès des enfants et des adolescents ou leur utilisation n’est pas autorisée officiellement auprès d’eux, ce qui crée un défi constant en matière d’élaboration et de définition de pharmacothérapies à la sécurité et l’efficacité optimales au sein du groupe d’âge pédiatrique. Depuis dix ans, des réseaux ont germé aux États-Unis et en Europe afin d’accroître la recherche sur les médicaments dans ce groupe, mais aucune évolution comparable ne s’observe au Canada. Le présent document de principes expose le contexte de la situation canadienne et contient des recommandations qui tiennent compte de deux besoins pressants : plus de recherches sur les médicaments axées sur les enfants et les adolescents canadiens, y compris un financement dédié à de telles recherches, et plus d’effectifs pour mener des études ciblées. Ces initiatives devraient être entreprises en collaboration, sur les scènes nationale et internationale, et inclure des démarches stratégiques et novatrices afin de régler les problèmes et enjeux éthiques uniques que présente la recherche sur les médicaments au sein de cette population.

  12. 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

  13. KEY COMPARISON: Key comparison CCQM-K45: Sn in tomato paste: final report

    NASA Astrophysics Data System (ADS)

    Wolff Briche, Céline S. J.; Holcombe, Gill; Sargent, Mike

    2006-01-01

    Key comparison CCQM-K45 was performed to demonstrate and document the capability of interested national metrology institutes in the mass fraction of Sn in a food matrix. This comparison was an activity of the Inorganic Analysis Working Group of the Comité Consultatif pour la Qualité de la Matière and was coordinated by LGC (Teddington, UK). The following laboratories participated in this key comparison (alphabetical order). KRISS (Republic of South Korea) LGC (UK) LNE (France) PTB (Germany) UME (Turkey) Good agreement was observed between the reported results of four of the participants. The other participant did not use any HCl during the sample preparation, which can affect the stability of the tin in solution, and its reported value was lower than for the other participants. It was not included in the calculation of the key comparison reference value with the agreement of the NMI concerned. The reference value was calculated as the arithmetic mean of the reported participants' results (excluding one), and is equal to 227.1 mg kg-1, with an expanded uncertainty of 2.4 mg kg-1 (1.1%). The equivalence statements were calculated on this basis. 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).

  14. L'analyse par activation de neutrons de réacteur

    NASA Astrophysics Data System (ADS)

    Meyer, G.

    2003-02-01

    Quand les neutrons traversent la matière, certains sont transmis sans interaction, les autres interagissent avec le milieu traversé par diffusion et par absorption. Ce phénomène d'absorption est utilisé pour se protéger des neutrons, mais aussi pour les détecter; il peut également être utilisé pour identifier les noyaux “absorbants" et ainsi analyser le milieu traversé. En effet par différentes réactions nucléaires (n,γ), (n,p), (n,α), (n,fission), on obtient des noyaux résiduels qui sont souvent radioactifs; on dit que l'échantillon est “activé". Si l'on connaît le rendement d'activation et donc le pourcentage de noyaux ainsi “transmutés", les mesures de radioactivité induite vont permettre de déterminer la composition de l'échantillon irradié. Cette méthode dite d'analyse par activation neutronique est pratiquée depuis la découverte du neutron. Elle a permis grâce à sa sélectivité et à sa sensibilité d'avoir accès au domaine des traces et des ultra-traces dans des champs d'application très divers comme la métallurgie, l'archéologie, la biologie, la géochimie etc...

  15. 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

  16. 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

  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. Volvulus du grêle sur lipome du mésentère

    PubMed Central

    Mbaye, Papa Alassane; Faye, Aime Lakh; Sagna, Aloise; Ndoye, Ndeye Aby; Seck, Ndeye Fatou; Ndour, Oumar; Ngom, Gabriel

    2017-01-01

    Nous rapportons l'observation d'une fillette âgée de 7ans qui reçue dans un tableau de syndrome sub-occlusif avec une douleur abdominale aigue paroxystique siégeant au niveau de l'épigastre associée à des vomissements et un arrêt des matières. L'examen physique mettait en évidence une sensibilité à la palpation de l'épigastre. L'échographie abdominale a montré une formation tissulaire intra péritonéale mal limitée sans caractère vasculaire au doppler, exerçant un effet de masse sur les structures de voisinage ; les vaisseaux mésentériques étaient en position normale. A la tomodensitométrie cette masse correspondait à une formation lipomateuse bien limitée exerçant un effet de masse sur le caecum avec un volvulus du grêle. Le diagnostic de volvulus du grêle sur lipome mésentérique a été retenu. L'exploration chirurgicale confirmait ce diagnostic. Une détorsion grélique et une énucléation lipomateuse étaient réalisées. Les suites opératoires étaient simples après un recul de 6 mois. L'examen anatomopathologique confirmait la nature lipomateuse de la masse. PMID:28819497

  19. 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

  20. La membrane ancestrale : barrière asymétrique à l'origine de l'activité optique dans les milieux vivants ?

    NASA Astrophysics Data System (ADS)

    Spach, Gérard; Merle, Liliane

    Since the discovery of the optical activity of the biomolecules, the early origin of the biopolymer asymmetry (Nucleic acids and proteins) of the living cells is the subject of many speculations. In some simple instances, asymmetric amplification has been shown experimentally to occur at the molecular level. Following some authors, its origins can be found at the subatomatic level. In this article, the early asymmetric enclosing of prebiotic moieties is stressed, by refering especially to the presence of chiral compounds of lipidic nature in the vesicle membranes and to ancestral pores or channels able to select optically active constituents of the "primordial soup", a few billion years ago. L'origine ancestrale de l'asymétrie des biopolymères, acides nucléiques et protéines, de la cellule vivante suscite depuis la découverte de l'activité optique des biomolécules une vive discussion et la recherche d'une explication rationnelle. Dans des cas relativement simples, une amplification certaine de l'asymétrie a été montrée expérimentalement au niveau moléculaire, et selon certains, elle pourait trouver sa source au niveau subatomique. Dans cet article, le rôle précoce du confinement asymétrique de la matière prébiotique est souligné, notamment en se référant à la présence de pores ou de cannaux capables de sélectionner des constituants optiquements actifs de la "soupe primordiale", il y a quelques milliards d'années.

  1. Avant Propos

    NASA Astrophysics Data System (ADS)

    Cornet, Alain; Broll, Norbert; Denier, Philippe

    2002-07-01

    Le quatrième colloque Rayons X et Matière (RX 2001) s'est tenu à Strasbourg du 4 au 7 décembre 2001. Comme lors des colloques précédents (1995, 1997 et 1999) nous avons pu réunir de nombreux chercheurs, industriels et constructeurs concernés par la caractérisation des matériaux. Cette manifestation qui se déroule tous les deux ans a pour objectifs de rendre compte périodiquement des avancées faites dans le domaine des techniques X et plus particulièrement de l'ingénierie des surfaces. Cette année nous avons ajouté deux nouveaux thèmes : étude des nanomatériaux et techniques des microfaisceaux. André GUINIER était avec nous lors du premier colloque (colloque 1995, consacré à la commémoration du centenaire de la découverte des rayons X). Nous sommes attristés par son décès et nous lui dédions le Colloque RX 2001. Les premiers articles de cet ouvrage rappellent sa vie de scientifique et ses principaux travaux. En même temps que nous écrivons ces quelques lignes, nous nous préparons à lancer le colloque RX 2003. Ces colloques ont lieu grâce à la participation constante des chercheurs et l'engagement des constructeurs et distributeurs de matériels ; nous les en remercions vivement et nous leur donnons rendez-vous à Strasbourg, en décembre 2003.

  2. Evaluation of the NovaSure endometrial ablation procedure in women with uterine cavity length over 10 cm.

    PubMed

    Thiel, John A; Briggs, M Martha; Pohlman, Scott; Rattray, Darrien

    2014-06-01

    Objectif : Comparer, chez des femmes ayant subi une ablation de l’endomètre au moyen de la technique NovaSure et présentant une longueur utérine déterminée par hystérométrie de plus de 10 cm ou de 10 cm ou moins, les événements indésirables associés à l’intervention, l’état des saignements menstruels à la suite de l’intervention et la nécessité de procéder à une nouvelle intervention chirurgicale. Méthodes : Nous avons mené une étude de cohorte rétrospective qui portait sur 188 femmes ayant fréquenté une pratique gynécologique communautaire au Canada. Quatre-vingt-sept de ces femmes présentaient une longueur utérine déterminée par hystérométrie de plus de 10 cm, tandis que les 101 autres présentaient une longueur utérine déterminée par hystérométrie de 10 cm ou moins. Les événements indésirables associés à l’intervention, l’état des saignements menstruels à la suite de l’intervention et la nécessité de procéder à une nouvelle intervention chirurgicale sont les paramètres qui ont été comparés chez ces deux groupes de femmes. Résultats : Les longueurs utérines moyennes déterminées par hystérométrie ont été de 11,0 ± 0,6 cm et de 8,9 ± 0,8 cm au sein des groupes « > 10 cm » et « ≤ 10 cm », respectivement. Aucune différence n’a été constatée entre les groupes en matière de caractéristiques démographiques ou d’antécédents gynécologiques, exception faite d’un IMC accru au sein du groupe « > 10 cm » et d’une prévalence accrue de dysménorrhée au sein du groupe « ≤ 10 cm ». De façon globale, 44,1 % de toutes les participantes avaient connu l’échec de l’hormonothérapie et 20,7 % avaient connu l’échec d’un traitement non hormonal avant la tenue de l’ablation. Les participantes composant les autres 35,2 % avaient refusé d’avoir recours à un traitement de rechange et décidé de subir directement une ablation de l

  3. VizieR Online Data Catalog: Kepler follow-up observation program. I. Imaging (Furlan+, 2017)

    NASA Astrophysics Data System (ADS)

    Furlan, E.; Ciardi, D. R.; Everett, M. E.; Saylors, M.; Teske, J. K.; Horch, E. P.; Howell, S. B.; van Belle, G. T.; Hirsch, L. A.; Gautier, T. N.; Adams, E. R.; Barrado, D.; Cartier, K. M. S.; Dressing, C. D.; Dupree, A. K.; Gilliland, R. L.; Lillo-Box, J.; Lucas, P. W.; Wang, J.

    2017-07-01

    ) used the adaptive optics systems at Keck and Palomar with NIRC2 and PHARO, respectively, and typically observed each target with the J-, H-, and K-band filters. Adams et al. 2012 (Cat. J/AJ/144/42), Adams et al. (2013AJ....146....9A) and Dressing et al. (2014AJ....148...78D) mainly used the Ks filter in their AO observations at the MMT; in addition, they often used the J-band filter when a companion was detected in the Ks image. The field of view of the ARIES instrument on the MMT was 20''*20'', somewhat smaller than that of PHARO at Palomar, and the FWHM of the stellar images varied between about 0.1'' and 0.6''. Kraus et al. 2016 (Cat. J/AJ/152/8) employed adaptive optics imaging and also non-redundant aperture-mask interferometry at Keck with the NIRC2 instrument; the latter technique is limited only by the diffraction limit of the 10m Keck telescope. They used the K' filter for their observations. Baranec et al. 2016 (Cat. J/AJ/152/18) and Ziegler et al. 2016 (AJ accepted, arXiv:1605.03584) observed a sample of KOI host stars at Keck using mostly the K' filter on NIRC2. With the Robo-AO imaging at the Palomar 1.5m telescope, Law et al. 2014 (Cat. J/ApJ/791/35), Baranec et al. 2016 (Cat. J/AJ/152/18), and Ziegler et al. 2016 (AJ accepted, arXiv:1605.03584) covered a total of 3320 KOI host stars. For most observations, they used a long-pass filter whose window starts at 600nm (LP600), which is similar to the Kepler bandpass; they also took data for some stars in the Sloan i-band filter and, more rarely, Sloan r and z filters. The typical FWHM of the observed stellar PSF amounted to 0.12''-0.15''; the images covered a field of view of 44''*44''. Lillo-Box et al. (2012, Cat. J/A+A/546/A10; 2014, Cat. J/A+A/566/A103) used the 2.2m Calar Alto telescope with the AstraLux instrument to obtain diffraction-limited imaging with the lucky imaging technique, typically observing in the i- and z-band filters. This technique involves taking a very large number of short exposures

  4. 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

  5. Intérêt des prothèses métalliques expansives dans la prise en charge de l’occlusion tumorale colique: expérience d’un service hospitalier Marocain

    PubMed Central

    Rouibaa, Fedoua; Bakkar, Meriem; Seddik, Hassan; Addioui, Tarik; Filali, Fatima Zahra; Akka, Rachid; Desla, Hanane; Aourarh, Aourarh

    2013-01-01

    Le traitement de l’obstruction colique d’origine tumorale s’est modifié ces dernières années grâce à l’apport des endoprothèses coliques. Elles constituent une alternative thérapeutique reconnue au traitement chirurgical dans 2 indications: la levée en urgence de l’occlusion colique aigue avant une chirurgie curatrice ou pour le traitement palliatif de l’obstruction colique chez les patients inopérables ou ayant une maladie localement avancée ou métastatique. Il s’agit de 12 observations de syndrome occlusif colique d’origine tumorale traitées par endoprothèses coliques au sein du service de Gastro-entérologie 1 de l’hôpital militaire d’instruction Mohammed V. L’âge moyen était de 53 ans. Il existait une prédominance masculine (9 hommes - 3 femmes). Tous les patients présentaient un syndrome occlusif avec arrêt des matières et des gaz. L’abdomen sans préparation montrait des niveaux hydro-aériques chez tous les patients. La tomodensitométrie objectivait un processus colique sténosant avec dilatation des anses en amont. Tous les patients ont bénéficié de la mise en place d’une endoprothèse par colonoscopie sous anesthésie générale. Le succès technique immédiat et clinique était noté dans 95% des cas. La migration de la prothèse a été notée dans un cas. Les endoprothèses coliques constituent une alternative de choix au traitement chirurgical des sténoses tumorales coliques symptomatiques, soit pour permettre de préparer au traitement curatif chirurgical “à froid”, soit dans un but palliatif avant de débuter une éventuelle chimiothérapie. PMID:23565315

  6. 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

  7. On the ionization and dissociative photoionization of iodomethane: a definitive experimental enthalpy of formation of CH3I.

    PubMed

    Bodi, Andras; Shuman, Nicholas S; Baer, Tomas

    2009-12-14

    The dissociative photoionization onset energy of the CH(3)I --> CH(3)(+) + I reaction was studied at the vacuum ultraviolet (VUV) beamline of the Swiss Light Source (SLS) using a new imaging photoelectron photoion coincidence (iPEPICO) apparatus operating with a photon resolution of 2 meV and a threshold electron kinetic energy resolution of about 1 meV. Three previous attempts at establishing this value accurately, namely a pulsed field ionization (PFI)-PEPICO measurement, ab initio calculations and a mass-analyzed threshold ionization (MATI) experiment, in which the onset energy was bracketed by state-selected excitation to vibrationally excited (2)A(1) A states of the parent ion, have yielded contradictory results. It is shown that dimers and adducts formed in the supersonic molecular beam affected the PFI-PEPICO onset energy. The room temperature iPEPICO experiment yields an accurate 0 K onset of 12.248 +/- 0.003 eV, from which we derive a Delta(f)H(o)(298 K)(CH(3)I) = 15.23 +/- 0.3 kJ mol(-1), and the C-I bond energy in CH(3)I is 232.4 +/- 0.4 kJ mol(-1). The room temperature breakdown diagram shows a fine structure that corresponds to the threshold photoelectron spectrum (TPES) of the A state. Low internal energy neutrals seem to be preferentially ionized in the A state when compared with the X state, and A state peaks in the TPES are Stark-shifted as a function of the DC field, whereas the dissociative photoionization of X state ions is not affected. This suggests that there are different competing mechanisms at play to produce ions in the A state vs. ions in the X state. The competition between field ionization and autoionization in CH(3)I is compared with that in Ar, N(2) and in the H-atom loss energy region in CH(4)(+). The binding energies of the neutral and ionic Ar-CH(3)I clusters were found to be 26 and 66 meV, respectively.

  8. How does poverty beget poverty?

    PubMed

    Pagani, Linda S

    2007-10-01

    un développement favorisant un faible rendement scolaire, des comportements et des attitudes néfastes en matière de santé et une dépression à l'âge adulte. Ces caractéristiques deviennent plus décourageantes lorsque les enfants non résilients deviennent les parents de la génération suivante.

  9. How does poverty beget poverty?

    PubMed Central

    Pagani, Linda S

    2007-01-01

    ouvrir la voie à un développement favorisant un faible rendement scolaire, des comportements et des attitudes néfastes en matière de santé et une dépression à l’âge adulte. Ces caractéristiques deviennent plus décourageantes lorsque les enfants non résilients deviennent les parents de la génération suivante. PMID:19030448

  10. 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

  11. Comparison of tuberculosis treatment outcomes by method of treatment supervision in the Fiji Islands.

    PubMed

    Narayan, N; Viney, K; Varman, S

    2014-09-21

    Contexte: Le Programme National de lutte contre la Tuberculose (TB) (PNT) aux Fidji.Objectif: Déterminer les résultats du traitement anti-tuberculeux stratifiés par méthode de supervision de ce traitement (soit une auto supervision [SAT] par les patients euxmêmes, soit la supervision par un membre de la famille).Schéma: Etude rétrospective descriptive de tous les patients tuberculeux enregistrés par le PNT aux Fidji entre janvier 2011 et juin 2013.Résultats: Un total de 563 patients tuberculeux ont été enregistrés et pour 470 (83%) d'entre eux, on disposait d'informations sur le type de supervision. Parmi ces derniers, la majorité (n = 401 ; 85%) bénéficiait de la supervision de leur traitement par un membre de la famille ; 69 (15%) ont reçu SAT. Ces derniers ont eu un taux de succès du traitement anti tuberculeux de 79,4% comparé à 88,5% chez les patients supervisés par un membre de la famille ; ce résultat était statistiquement significatif (P = 0,0374).Conclusion: Les résultats du traitement anti-tuberculeux étaient plus souvent meilleurs chez les patients supervisés par un membre de la famille par rapport à ceux recevant SAT. Cette méthode de supervision du traitement n'exige pas beaucoup de ressources, c'est pourquoi nous recommandons qu'elle soit poursuivie aux Fidji. On pourrait réaliser une recherche opérationnelle prospective afin de déterminer les préférences des patients en matière de supervision de leur traitement anti-tuberculeux aux Fidji dans le cadre d'une approche centrée sur le patient.

  12. Compliance with infection control practices in sputum microscopy centres: a study from Kerala, India.

    PubMed

    Aslesh, O P; Ubaid, N P; Nagaraja, S B; Shewade, H D; Padmanabhan, K V; Naik, B R; Satpati, M; Blesson, S; Jayasree, A K

    2015-12-21

    Contexte : Une des stratégies du Programme national révisé de lutte contre la tuberculose (RNTCP) en Inde consiste à lutter contre la tuberculose en augmentant la détection des cas à travers un réseau national de Centres de Diagnostic par Microscopie (DMC). La mise en oeuvre des précautions standard de lutte contre les infections dans ces DMC est très importante pour prévenir la transmission des infections, non seulement vis-à-vis du personnel de laboratoire, mais également vis-à-vis de la population générale. Cependant, en Inde, ceci n'a pas été évalué par une agence externe.Méthode : Une étude transversale a été réalisée pour évaluer les connaissances, la structure et l'adhésion aux pratiques de lutte contre l'infection (ICP) dans les 38 DMC du district de Kannur, état du Kerala, Inde en 2015. Grâce à des observations et à des entretiens, les investigateurs ont recueilli des données dans un format structuré.Résultats : Les connaissances d'ensemble relatives à la lutte contre l'infection ont été jugées satisfaisantes pour 29% des techniciens de laboratoire. Le niveau d'ensemble des centres en matière de lutte contre l'infection a été satisfaisant dans 61% des DMC. L'adhésion aux pratiques de lutte contre l'infection a été satisfaisante dans 45% des DMC. Les connaissances relatives aux pratiques d'ICP ont été meilleures dans les DMC du gouvernement tandis que les installations et l'adhésion aux directives de gestion des déchets biomédicaux ont été meilleures dans les DMC privés.Conclusion : Connaissant le risque très élevé d'infection parmi les techniciens de laboratoire, il y a un besoin urgent de corriger les déficiences des pratiques de lutte contre l'infection.

  13. Follow-up examinations: are multidrug-resistant tuberculosis patients in Uttar Pradesh, India, on track?

    PubMed

    Tripathi, U C; Nagaraja, S B; Tripathy, J P; Sahu, S K; Parmar, M; Rade, K; Bhatnagar, S; Ranjan, A; Sachdeva, K S

    2015-03-21

    Contexte : Tous les patients atteints de tuberculose multirésistante (TB-MDR) qui avaient achevé 6 mois de traitement dans le cadre du Programme National Révisé de Lutte contre la Tuberculose (RNTCP) dans l’Uttar Pradesh, le plus grand état dans le nord de l’Inde.Objectif : Déterminer la proportion de patients TB-MDR bénéficiant d’examens de suivi régulier et la vision des prestataires et des patients sur ces services de suivi.Méthodes : Une étude rétrospective de cohorte a été réalisée grâce à la revue des dossiers de 64 patients TB-MDR éligibles enregistrés entre avril et juin 2013 dans 11 districts de l’état. Les patients et le personnel du RNTCP des districts sélectionnés ont également été interviewés grâce à un questionnaire semi-structuré.Résultats : Au total, 34 (53,1%) patients ont bénéficié d’examens de culture de crachats au 3(e) mois, 43 (67,2%) au 4(e) mois, 36 (56,3%) au 5(e) mois et 37 (57,8%) au 6(e) mois. Les principaux facteurs associés à un suivi irrégulier émanant des entretiens étaient le nombre élevé de consultations, la distance à parcourir, les ruptures de stock dans les structures et le manque de connaissances des patients vis-à-vis du programme de suivi.Conclusion : La majorité des patients TB-MDR ont eu un suivi irrégulier. Les facteurs liés aux prestataires dépassent ceux liés aux patients en matière d’examens de suivi médiocres. Le RNTCP devrait se concentrer sur la décentralisation des services de suivi, assurer la logistique et le conseil centré sur le patient afin d’accroitre la régularité du suivi.

  14. 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

  15. A Canadian survey of postgraduate education in Aboriginal women's health in obstetrics and gynaecology.

    PubMed

    Jumah, Naana Afua; Wilson, Don; Shah, Rajiv

    2013-07-01

    Objectif : Évaluer les connaissances des résidents canadiens en obstétrique-gynécologie en matière de santé des femmes autochtones (SFA) et leur expérience dans ce domaine (y compris une auto-évaluation de la compétence), et déterminer la capacité des directeurs de programme de résidence d’offrir un curriculum en SFA et d’évaluer les ressources disponibles en vue de soutenir cette initiative. Méthodes : Des sondages destinés aux résidents et aux directeurs de programme ont été distribués dans tous les programmes de résidence agréés en obstétrique-gynécologie du Canada. Le sondage destiné aux résidents comptait 20 questions à choix multiple couvrant quatre domaines clés : connaissances générales au sujet des peuples autochtones du Canada; les effets du système de pensionnat; l’expérience clinique en SFA; et une auto-évaluation de la compétence en SFA. Le sondage destiné aux directeurs de programme comptait une évaluation du contenu du curriculum en SFA et des ressources disponibles en vue de soutenir ce curriculum. Résultats : Les résidents détiennent peu de connaissances préalables au sujet de la SFA et des déterminants de la santé, et sont conscients de ces lacunes. Ils s’intéressent à la SFA et reconnaissent l’importance de pouvoir disposer d’une formation dans ce domaine pour leurs activités professionnelles à venir. Les directeurs de programme soutiennent l’élaboration d’un curriculum en SFA, mais ne détiennent pas les ressources nécessaires pour offrir un curriculum exhaustif dans ce domaine et tireraient avantage de la disponibilité d’un curriculum standardisé. Conclusion : La mise sur pied d’une initiative nationale en ce qui concerne l’élaboration d’un curriculum pourrait constituer une façon efficace de faciliter l’offre d’une formation en SFA, tout en atténuant la nécessité pour chacun des programmes de chercher à obtenir des ressources à cette fin.

  16. Le LHC, un tunnel cosmique

    ScienceCinema

    None

    2016-07-12

    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

  17. Development of a liquid chromatography-mass spectrometry method for the high-accuracy determination of creatinine in serum.

    PubMed

    Stokes, Peter; O'Connor, Gavin

    2003-08-25

    An LC-MS method for the high-accuracy determination of creatinine in serum has been developed and used to provide results for an international measurement evaluation programme (IMEP) and the Comité Consultatif pour la Quantité de Matière (CCQM) international inter-laboratory studies. An assessment of different sample preparation methods, including ion-exchange chromatography, solid-phase extraction, plasma ultrafiltration and ethanol protein precipitation, revealed that no bias or reduced precision was associated with the quicker less extensive clean-up methods, when using liquid chromatography-isotope dilution mass spectrometry (LC-IDMS) for quantitation. A number of different calibration regimes were also investigated. External calibration was shown to provide adequate calibration for most routine analysis with a relative associated expanded uncertainty (k=2) of 6% at the 95% confidence level. The use of a non-isotopically labelled internal standard was shown to improve the relative expanded uncertainty (k=2) to 4%. However, the difference in retention time between the internal standard and the creatinine was such that a matrix interferent produced an observed bias of over 16%. The use of an isotopically labelled internal standard was shown to reduce any bias to less than 0.2% with an expanded uncertainty (k=2) of less than 0.3%. The developed method was then used, in a blind trial organised jointly by IMEP and CCQM, to determine the amount of creatinine in human serum. The method performed well against the established reference method of ion-exchange chromatography followed by derivatisation gas chromatography (GC)-IDMS. The observed difference between the values determined by LC-IDMS and the key comparison reference value (average of all the submitted results) was less than 0.3%. The biggest advantage of the described method is in the speed of analysis. With a chromatographic run time of less than 10 min and sample preparation consisting of a simple protein

  18. Comparison of GC-ICP-MS and HPLC-ICP-MS for species-specific isotope dilution analysis of tributyltin in sediment after accelerated solvent extraction.

    PubMed

    Wahlen, Raimund; Wolff-Briche, Céline

    2003-09-01

    This study describes a direct comparison of GC and HPLC hyphenated to ICP-MS determination of tributyltin (TBT) in sediment by species-specific isotope dilution analysis (SS-IDMS). The certified reference sediment PACS-2 (NRC, Canada) and a candidate reference sediment (P-18/HIPA-1) were extracted using an accelerated solvent extraction (ASE) procedure. For comparison of GC and LC methods an older bottle of PACS-2 was used, whilst a fresh bottle was taken for demonstration of the accuracy of the methods. The data obtained show good agreement between both methods for both the PACS-2 sediment (LC-ICP-IDMS 828+/-87 ng g(-1) TBT as Sn, GC-ICP-IDMS 848+/-39 ng g(-1) TBT as Sn) and the P-18/ HIPA-1 sediment (LC-ICP-IDMS 78.0+/-9.7 ng g(-1) TBT as Sn, GC-ICP-IDMS 79.2+/-3.8 ng g(-1) TBT as Sn). The analysis by GC-ICP-IDMS offers a greater signal-to-noise ratio and hence a superior detection limit of 0.03 pg TBT as Sn, in the sediment extracts compared to HPLC-ICP-IDMS (3 pg TBT as Sn). A comparison of the uncertainties associated with both methods indicates superior precision of the GC approach. This is related to the better reproducibility of the peak integration, which affects the isotope ratio measurements used for IDMS. The accuracy of the ASE method combined with HPLC-ICP-IDMS was demonstrated during the international interlaboratory comparison P-18 organised by the Comité Consultatif pour la Quantité de Matière (CCQM). The results obtained by GC-ICP-IDMS for a newly opened bottle of PACS-2 were 1087+/-77 ng g(-1) Sn for DBT and 876+/-51 ng g(-1) Sn for TBT (expanded uncertainties with a coverage factor of 2), which are in good agreement with the certified values of 1090+/-150 ng g(-1) Sn and 980+/-130 ng g(-1) Sn, respectively.

  19. L’expérience d’une patiente qui reçoit des soins pour la démence

    PubMed Central

    Frank, Christopher; Forbes, Rev Faye

    2017-01-01

    Résumé Objectif Permettre aux médecins de famille de comprendre « l’expérience vécue » de la démence de la bouche d’une personne atteinte de démence—Faye Forbes, ministre anglicane de 64 ans atteinte de la maladie d’Alzheimer, qui donne son point de vue sur comment vivre avec la démence—et utiliser cette information pour améliorer les soins et les résultats. Sources d’information Une recherche a été effectuée dans MEDLINE sur Ovid entre janvier 2005 et février 2015, à l’aide des mots-clés anglais suivants : dementia, caregiver, perspectives et quality of health care. Les articles qui s’adressaient aux médecins de famille ont été sélectionnés. Des revues pertinentes et des articles de recherche originaux ont été utilisés, le cas échéant, s’ils s’appliquaient aux personnes atteintes de démence et à leurs soignants. Message principal Plusieurs cadres de référence organisent les principales expériences décrites par les patients et leurs soignants. Nous avons utilisé une revue de la littérature qualitative pour fournir un cadre de référence résumant l’expérience de Faye, en fonction des thèmes suivants : tenter d’obtenir un diagnostic, accéder au soutien et aux services, besoins en matière d’information, prise en charge de la maladie, et communication et attitudes. Conclusion Les médecins doivent tenir compte de ces thèmes lorsqu’ils planifient la prise en charge des personnes atteintes de démence. Il importe de tenter de comprendre l’expérience et le point de vue des personnes atteintes de démence et de leurs soignants afin de pouvoir dispenser des soins optimaux. PMID:28115451

  20. Incorporating research technology into the clinical assessment of balance and mobility: perspectives of physiotherapists and people with stroke.

    PubMed

    Pak, Patricia; Jawed, Hina; Tirone, Christina; Lamb, Bethany; Cott, Cheryl; Brunton, Karen; Mansfield, Avril; Inness, Elizabeth L

    2015-01-01

    Objectif : Décrire les vues des gens ayant subi une attaque et de leurs physiothérapeutes au sujet du recours à la biomécanique pour l'évaluation de l'équilibre et de la mobilité. Méthodes : Dans cette étude qualitative, on a mené des interviews semi-structurées auprès de patients ayant subi un accident vasculaire cérébral et organisé un groupe de discussion avec leurs physiothérapeutes. Pour coder les données de ces interviews et de ce groupe, on a procédé par induction ligne à ligne en se servant d'un logiciel qualitatif pour convertir les codes en thèmes. Résultats : On a jugé que les données quantitatives de cette évaluation pouvaient éclairer les patients sur les problèmes d'équilibre et de mobilité. Les physiothérapeutes ont constaté que l'évaluation confirmait le raisonnement clinique et contribuait à une appréciation précise des progrès, mais leurs opinions étaient partagées en matière d'incidence sur le choix de traitement. Les patients auraient voulu plus de communication sur le but de l'évaluation. Ils ont aussi dit que la confiance dans leurs physiothérapeutes les aidait à vaincre leurs anxiétés et que cette confiance s'acquérait par une exposition à des évaluations d'équilibre plus exigeantes. Les physiothérapeutes préconisaient l'emploi d'un système de harnais pour une intégration en toute sécurité à leur pratique de l'évaluation et de la formation en maîtrise réactive de l'équilibre. Conclusion : Et les patients et les thérapeutes attachaient de la valeur aux données quantitatives issues de l'évaluation. Quelle que soit la technologie utilisée, les patients apprécient une étroite relation physiothérapeute-patient. Une constante collaboration entre les cliniciens et les chercheurs devrait nous guider dans la conversion de la technologie en outils d'intérêt clinique.