cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Validité du modèle macroscopique de saut du flux de chaleur conductif à la paroi pour un écoulement de gaz dans une micro-conduite
Creators: name: Chibouti, Dahia
name: Trouette, Benoît
name: Chénier, Eric
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: trasferts thermiques
micro-conduites
gaz raréfié

description: L'utilisation de systèmes micro-électromécaniques (MEMS) a de nombreux avantages (réduction de la taille et du poids, amélioration des transferts de masse et de chaleur, …) et se rencontre de plus en plus fréquemment dans le monde de l'ingénierie. Une partie de ces MEMS fonctionnent avec des gaz qui circulent dans des micro-conduites, comme par exemple les micro-échangeurs gazeux, les micro-pompes, les micro-turbines, ... Dans ces systèmes de taille micrométrique dans lesquels le libre parcours moyen des molécules du fluide (distance moyenne entre deux collisions) est de l'ordre de 10 à 100 fois l'échelle caractéristique de longueur de l'écoulement, les modèles standard de la mécanique des milieux continus doivent être adaptés. En effet au voisinage des parois, l'équilibre thermodynamique local n'est plus vérifié : des discontinuités de certaines grandeurs thermodynamiques apparaissent à l'interface. Bien que certaines de ces discontinuités soient très largement documentées dans la littérature et fassent preuve d'un consensus pour les variables de vitesse et de température, une controverse persiste sur l'existence d'un saut portant sur le flux de chaleur de conduction à la paroi (loi de Fourier). En s'appuyant sur les travaux de [1, 2], une étude récente basée sur la mécanique des milieux continus [3] a montré qu'une contribution visqueuse, liée au glissement du fluide à la paroi, devait intervenir pour assurer la continuité du flux de chaleur total à l'interface. Ce résultat semble confirmer l'existence d'un saut du flux conductif à l'interface fluide/solide. La présente contribution vise à vérifier si le modèle présenté récemment par Nicolas et al. [3] dans le cadre des milieux continus est correct. Afin de s'affranchir d'une modélisation continue au voisinage des parois, pour laquelle l'équilibre thermodynamique n'est plus vérifié, des simulations à l'échelle moléculaire ont été effectuées. Nos travaux montrent qu'il existe un saut du flux de conduction transmis de la phase gazeuse à la paroi solide. Ce saut correspond exactement au flux de chaleur produit par la dissipation visqueuse qui est engendrée par le glissement du fluide à la paroi. \footnotesize{ \noindent ~[1] S.H.Maslen,On heat transfer in slip flow, J. Aeronaut. Sci. 25 (1958) 400–401. \noindent ~[2] C. Hong,Y. Asako, Some considerations on thermal boundary condition of slip flow, Int. J. Heat Mass Tran. 53 (15–16) (2010) 3075–3079, https://doi.org/10.1016/j.ijheatmasstransfer.2010.03.020. \noindent ~[3] X. Nicolas, E. Chénier, and G. Lauriat. Thermal boundary conditions for convective heat transfer of dilute gases in slip flow regime. International Journal of Thermal Sciences,135:298 – 301, 2019. https://doi.org/10.1016/j.ijthermalsci.2018.09.016}
Charge Trapping Dynamics in PbS Colloidal Quantum Dot Photovoltaic Devices
Creators: name: Bakulin, Artem A.
name: Neutzner, Stefanie
name: Bakker, Huib J.
name: Ottaviani, Laurent
name: Barakel, Damien
name: Chen, Zhuoying
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The efficiency of solution-processed colloidal quantum dot (QD) based solar cells is limited by poor charge transport in the active layer of the device, which originates from multiple trapping sites provided by QD surface defects. We apply a recently developed ultrafast electro-optical technique, pump-push photocurrent spectroscopy, to elucidate the charge trapping dynamics in PbS colloidal-QD photovoltaic devices at working conditions. We show that IR photo-induced absorption of QD in the 0.2-0.5 eV region is partly associated with immobile charges, which can be optically de-trapped in our experiment. Using this absorption as a probe, we observe that the early trapping dynamics strongly depend on the nature of the ligands used for QD passivation while it depends only slightly on the nature of the electron-accepting layer. We find that weakly bound states, with a photon-activation energy of 0.2 eV, are populated instantaneously upon photoexcitation. This indicates that the photogenerated states show an intrinsically bound-state character, arguably similar to charge-transfer states formation in organic photovoltaic materials. Sequential population of deeper traps (activation energy 0.3-0.5 eV) is observed on the ~0.1-10 ns time scales, indicating that most of carrier trapping occurs only after substantial charge relaxation/transport. The reported study disentangles fundamentally different contributions to charge trapping dynamics in the nanocrystal-based optoelectronic devices and can serve as a useful tool for QD solar cell development.
Additional file 4 of Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia
Creators: name: Molina - de la Fuente, Irene
name: Yimar, Mulat
name: García, Luz
name: González, Vicenta
name: Amor, Arancha
name: Anegagrie, Melaku
name: Benito, Agustín
name: Martínez, Javier
name: Moreno, Marta
name: Berzosa, Pedro
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Table S3. Haplotypes frequency of not—unique samples in pfhrp2 and pfhrp3 by sampling located in Ahmara region. Figure S1. Haplotype networks of pfhpr2 (a) and pfhrp3 (b). Colour represents different sample The size of the circles are proportional to the number of sequences include in each haplotype.
Estimating inelastic sediment deformation from local site response simulations
Creators: name: Borja, Ronaldo I.
name: Sun, WaiChing
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Engineering
subject: Civil engineering
subject: FOS: Civil engineering
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Significant insight into the dynamic local site response of a horizontally layered sediment deposit to seismic excitation can be gained from numerical simulations. In this paper we use a nonlinear local site response analysis code SPECTRA to estimate the coseismic sediment deformation at a seismically active site in Lotung, Taiwan. We address some basic issues relevant for interpreting the simulation results, including the impact of noise and baseline offsets present in the input ground motion. We also consider the sensitivity of the predicted deformation responses to statistical variations of sediment constitutive properties. Finally, we apply a suite of hypothetical strong ground motions to the base of the sediment deposit to better understand the pattern of inelastic deformation likely to result from strong seismic shaking.
An Indoor Fingerprinting Localization Approach for ZigBee Wireless Sensor Networks
Creators: name: Alhmiedat, Tareq
name: Samara, Ghassan
name: Salem, Amer O. Abu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Location tracking systems are increasingly becoming the focus of research in the field of Wireless Sensor Network (WSN). Received Signal Strength (RSS)-based localization systems are at the forefront of tracking research applications. Radio location fingerprinting is one of the most promising indoor positioning approaches due to its powerful in terms of accuracy and cost. However, fingerprinting systems require the collection of a large number of reference points in the tracking area to achieve reasonable localization accuracy. In this paper, we propose a fingerprinting localization approach based on a RSS technique. The proposed system does not require gathering a large number of reference points and offers good localization accuracy indoors. The implemented approach is based on dividing the tracking area into subareas and assigning a unique feature to each subarea through ranging the RSS values from different reference points. In order to test the proposed system's efficiency, a number of real experiments have been conducted using Jennic sensor nodes.
description: 13 pages
Effet de courant de charge et décharge sur l'augmentation de la température d'une batterie lithium-ion
Creators: name: Ziat, Khalid
name: Louahlia, Hasna
name: Gualous, Hamid
name: Schaetzel, Pierre
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: Batterie lithium
Cycle charge/décharge.

description: La croissance de demande des véhicules électriques a exigé l'amélioration des systèmes de stockage d'énergie d'un point de vu efficacité et durabilité. Les batteries sont utilisées comme un des systèmes de stockage d'énergie électrique dans les véhicules électriques en assurant ainsi une autonomie totale ou partielle. L'électrification des véhicules a pour objectif essentiel de réduire les émissions des $\unit{CO_2}$ qui sont approximativement 27\% dans le secteur de transport. Les batteries lithium-ion sont largement employées dans l'industrie automobile. La maîtrise de comportement thermique des batteries est donc un facteur important pour le dimensionnement de systèmes de refroidissement convenables. Ce travail porte sur la caractérisation thermique d'une batterie lithium-ion de capacité de 60 Ah soumise à des cycles de charge et de décharge à courant constant. Un dispositif expérimental est mis en place au laboratoire pour tester la batterie dans des conditions d'usage réel. Une présentation détaillée de ce banc sera réalisée. Une instrumentation de la batterie par des micro thermocouples et des fluxmètres est effectuée. Un modèle numérique est mis en place pour prédire les températures de fonctionnement de la batterie. Les résultats montrent que la température à la surface de la batterie augmente pour des courant de charge/décharge croissants. Pour un courant de charge égale au courant de décharge le profil de température durant un cycle charge/décharge à un forme ‘V'.
Non-Literary Items in Literary Texts: Why contemporary authors are changing the standard form of literature
Creators: name: Blake, Danielle J.
Publisher: name: Columbia University
Year: 2014
Subjects: Comparative literature

description: This paper analyzes the use of non-literary elements (pictures, erasure method, and jumbled word formatting) in three texts. It argues that the intention of using unconventional writing styles is a method of responding to modern politics and warfare. The paper explores how non-literary elements capture abstract contemporary concepts.
Additional file 5 of Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia
Creators: name: Molina - de la Fuente, Irene
name: Yimar, Mulat
name: García, Luz
name: González, Vicenta
name: Amor, Arancha
name: Anegagrie, Melaku
name: Benito, Agustín
name: Martínez, Javier
name: Moreno, Marta
name: Berzosa, Pedro
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 5: Table S4. Occurrence and number of variations of Baker’s amino acid repeats types in pfhrp2 and pfhrp3 sequences. *Amino acid repeats types described by Nderu et al. [61]. ^New amino acid repeats types
Simulation numérique des échanges convectifs locaux entre un jet d'air cylindrique isotherme et un cylindre chauffé
Creators: name: Brest, Keryann
name: Dehorter, Aymeric
name: Francoise, Ulrich
name: Lannes, Guillaume
name: Messaouden, Thya
name: Pellé, Julien
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: convection
jets
cylindre
simulation
CFD

description: Ce travail porte sur l'étude numérique des transferts de chaleur par convection entre un jet d'air isotherme en impact et un cylindre chauffé. Le modèle développé sous STARCCM+ est validé par rapport à des résultats issus de la littérature scientifique, dans laquelle seuls des nombres de Nusselt moyens, des valeurs du nombre de Nusselt au point d'impact ou encore la répartition tangentielle du nombre de Nusselt sur l'axe du jet sont étudiés. Pourtant, dans de nombreuses applications, la connaissance de la répartition des transferts convectifs sur l'ensemble de la surface est d'un grand intérêt. Cette étude permet donc de compléter les connaissances déjà établies par des cartographies complètes du nombre de Nusselt et par l'analyse des évolutions en fonction de différents paramètres tels que la distance d'impact et différents rapports de diamètres.
MPEC 2023-P46 : DAILY ORBIT UPDATE (2023 August 9)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Electromagnetic excitation of nuclei and neutron evaporation in ultrarelativistic ultraperipheral heavy ion collisions
Creators: name: Klusek-Gawenda, Mariola
name: Ciemala, Michal
name: Schafer, Wolfgang
name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a new approach for calculating electromagnetic excitation of nuclei as well as probabilities of emission and distributions of neutrons from decays of excited nuclear systems for ultrarelativistic, ultraperipheral heavy ion collisions. Excitation functions for $γ$ + Pb $\to$ Pb$^*$ are parametrized using physics-motivated components: excitation of giant resonances, quasi-deuteron absorption mechanism, excitation of nucleon resonances as well as high-energy dissociation of protons and neutrons. Neutron emission (up to 10 neutrons) from low-energy excitations of $^{208}$Pb is modelled in terms of the Hauser-Feshbach formalism. The probabilities of a given number of neutrons are calculated as a function of excitation energy in a Monte-Carlo code GEMINI. These functions are parametrized by smooth analytical functions. The results are compared to appropriate data for the $γ$ Pb $\to$ Pb$^*$ $\to$ k n reaction. As an example the approach is used for calculating electromagnetic excitation in UPC processes. Both single photon and double photon excitations are included and discussed. Topological cross sections with a given number of neutrons in forward and backward directions are calculated in the calculation at the LHC energies. Excitation functions are presented. The results of calculation are compared with SPS and more recent ALICE experimental data and good agreement is achieved.
description: 17 pages, 11 figures, 5 tables
From novel to criticism: narrative knowing in the nineteenth century
Creators: name: Sater, Maxwell
Publisher: name: No Publisher Supplied
Year: 2020

description: This dissertation argues that cross-disciplinary discord between literary, philosophical, and scientific writers was central to the formal and aesthetic developments of the British and American novel in the nineteenth century and to the evolution of modern literary criticism. While most scholars of nineteenth-century literature and science work within the “one culture” thesis, emphasizing the shared questions, themes, and techniques among different genres of intellectual writing, my project deviates from these accounts by emphasizing the claims to intellectual priority made, in particular, by novelists. I argue that the realist novels of Elizabeth Gaskell, George Eliot, Thomas Hardy, and Henry James advance a nonscientific epistemology I call, following Stanley Cavell, “ordinary.” These novels resist the scientific imperatives of definition and generalization and instead focus on the ways that knowledge is created and shared in ordinary life. I suggest that literary realism obviates the potential violence of knowledge relations by shifting the criteria for what it means to know someone or something away from conceptual certainty and towards social responsiveness. Ultimately, I argue that this epistemological framework, which originates in nineteenth-century realism, comes to define modern literary criticism.
Supplementary document for A linearized wavefront sensing model for aberration retrieval from low-frequency Fourier coefficients - 7047203.pdf
Creators: name: Zhou, Zhisheng
name: Zhang, Jingang
name: Fu, Qiang
name: Nie, Yunfeng
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplemental Document 1
Thermal metrology of water sensitive materials: experimental and theoretical approaches
Creators: name: Aghahadi, Mohammad
name: Padayodi, Essolé
name: Abboudi, Saïd
name: Bahrani, Seyed Amir
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: Thermal metrology
thermal conductivity
coupled transfer
hot plate method

description: In France, the thermal insulation of buildings is part of the main recommendations of Grenelle Environment Forum for the energy transition. Bio-based insulators are part of solutions implemented in building insulation. As bio-sourced insulators are hydrophilic, the classical non-water sensitive models of thermal metrology require being adapted when applied to these materials in wet atmospheres. To understand the influence of the humidity on thermal characterization of bio-based insulators, this study focuses on thermal metrology of hydrophilic and hydrophobic materials by an experimental approach based on the asymmetric hot plate method and a theoretical approach of coupled heat and humidity transfers. The antagonistic distinction between hydrophilic and hydrophobic character of studied media highlights the absolute need of coupled heat-humidity transfer models when characterizing water sensitive materials. In this study, the experimental approach shows that the thermal conductivity of a bio-based hydrophilic material increases with rising humidity. Results show for example that, at 20 $^{\circ}$C, the thermal conductivity of hydrophilic insulator increases up to 20\% when the relative humidity RH increases from 30\% to 90\%, i.e. from $0.028 \pm 10^{-3}$ to $0.033 \pm 10^{-3}\ \unit{W.m^{-1}.K^{-1}}$. However, in the case of a hydrophobic materials, such as a phase-change polymer, the measured thermal conductivity is almost constant ($0.218 \pm 10^{-3}\ \unit{W.m^{-1}.K^{-1}}$) for the RH between 30\% and 90\%. Furthermore, we develop a theoretical model that coupled equations of moisture and heat transfer and solved by the COMSOL Multiphysics® software. The results show a good agreement between the theoretical and the experimental approaches in both cases of the hydrophilic and the hydrophobic materials.
Characterization of the monotone polar of subdifferentials
Creators: name: Lassonde, Marc
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J52, 49K27, 26D10, 26B25

description: We show that a point is solution of the Minty variational inequality of subdifferential type for a given function if and only if the function is increasing along rays starting from that point. This provides a characterization of the monotone polar of subdifferentials of lower semicontinuous functions, which happens to be a common subset of their graphs depending only on the function.
description: 4 pages
Higgs Boson in the 4DCHM: LHC phenomenology
Creators: name: Barducci, D.
name: Belyaev, A.
name: Brown, M. S.
name: De Curtis, S.
name: Moretti, S.
name: Pruna, G. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Composite Higgs models provide an elegant solution to the hierarchy problem present in the Standard Model (SM) and give an alternative pattern leading to the mechanism of Electro-Weak Symmetry Breaking (EWSB). We present an analysis of the Higgs boson production and decay within a recently proposed realistic realization of this general idea: the 4D Composite Higgs Model (4DCHM). Comparing our results with the latest Large Hadron Collider (LHC) data we show that the 4DCHM could provide an alternative explanation with respect to the SM of the LHC results pointing to the discovery of a Higgs-like particle at 125 GeV.
description: Conference proceeding, EPS-HEP 2013, 18-24 July 2013, Stockholm. 3 pages, 2 figures, typo corrected
Modélisation individu centré de la condensation en goutte
Creators: name: Lethuillier, Jérémie
name: Miscevic, Marc
name: Lavieille, Pascal
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: Condensation en goutte
modélisation

description: La condensation en goutte est un régime particulièrement intéressant dans l'optique de gérer d'importants flux de chaleur. La modélisation des transferts passe par la connaissance de la distribution de la taille des gouttes. Celle-ci est communément déterminée à l'aide d'une approche statistique. Afin de valider cette approche, un modèle numérique de suivi d'individu a été développé. Cette nouvelle approche permet de prédire la distribution des gouttes de "grandes" tailles (gouttes observables expérimentalement). En revanche, la distribution des gouttes de "petites" tailles n'est pas en accord avec celle obtenue par le modèle statistique, or celui-ci fait des hypothèses fortes afin de déterminer cette distribution. Dans cette communication, une modification du modèle statistique est proposée à partir des résultats du modèle d'individu.
Additional file 6 of Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia
Creators: name: Molina - de la Fuente, Irene
name: Yimar, Mulat
name: García, Luz
name: González, Vicenta
name: Amor, Arancha
name: Anegagrie, Melaku
name: Benito, Agustín
name: Martínez, Javier
name: Moreno, Marta
name: Berzosa, Pedro
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Figure S2. Structural organisation of pfhrp2 amino acid repeats types. Type 1, when is present, appeared always at the beginning of the sequence with 1 to 5 consecutives repeats following by various consecutive type 2 repeats. In the middle of the sequences, there were different numbers of consecutive type 2 repeats usually mixed with type 4, type 5, type 6, type 7 and type 8, but there was not any clear pattern. At the end of the sequence, usually appeared a unique type 12 repeat, preceded by type 10 repeat.
Pulsar Timing Techniques
Creators: name: Lommen, Andrea N.
name: Demorest, Paul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We describe the procedure, nuances, issues, and choices involved in creating times-of-arrival (TOAs), residuals and error bars from a set of radio pulsar timing data. We discuss the issue of mis-matched templates, the problem that wide- bandwidth backends introduce, possible solutions to that problem, and correcting for offsets introduced by various observing systems.
description: 15 pages, 3 figures, accepted for publication in a Focus Issue of Classical Quantum Gravity devoted to Pulsar Timing Arrays
Supplementary document for A linearized wavefront sensing model for aberration retrieval from low-frequency Fourier coefficients - 7164685.pdf
Creators: name: Zhou, Zhisheng
name: Zhang, Jingang
name: Fu, Qiang
name: Nie, Yunfeng
Publisher: name: Optica Publishing Group
Year: 2024
Subjects: Uncategorized

description: Supplemental document.
A New Halpha Emission-Line Survey in the Orion Nebula Cluster
Creators: name: Szegedi-Elek, Elza
name: Kun, Mária
name: Pal, Bo Reipurth András
name: Balázs, Lajos G.
name: Willman, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present results from an Halpha emission-line survey in a one square degree area centered on the Orion Nebula Cluster, obtained with the Wide Field Grism Spectrograph-2 on the 2.2-meter telescope of the University of Hawaii. We identified 587 stars with Halpha emission, 99 of which, located mainly in the outer regions of the observed area, have not appeared in previous Halpha surveys. We determined the equivalent width (EW) of the line, and based on it classified 372 stars as classical T Tauri stars (CTTS) and 187 as weak line T Tauri stars (WTTS). Simultaneous r', i' photometry indicates a limiting magnitude of r' ~ 20 mag, but the sample is incomplete at r' > 17 mag. The surface distribution of the Halpha emission stars reveals a clustered and a dispersed population, the former consisting of younger and more massive young stars than the latter. Comparison of the derived EWs with those found in the literature indicates variability of the Halpha line. We found that the typical amplitudes of the variability are not greater than a factor 2-3 in the most cases. We identified a subgroup of low-EW stars with infrared signatures indicative of optically thick accretion disks. We studied the correlations between the equivalent width and other properties of the stars. Based on literature data we examined several properties of our CTTS and WTTS subsamples and found significant differences in mid-infrared color indices, average rotational periods, and spectral energy distribution characteristics of the subsamples.
description: accepted for ApJS
Role of Gas6 Receptors in Platelet Signaling during Thrombus Stabilization and Implications for Antithrombotic Therapy
Creators: name: Angelillo-Scherrer, Anne
name: Burnier, Laurent
name: Flores, Nathalie
name: Savi, Pierre
name: DeMol, Maria
name: Schaeffer, Paul
name: Herbert, Jean-Marc
name: Lemke, Greg
name: Goff, Stephen P.
name: Matsushima, Glenn K.
name: Earp, H. Shelton
name: Vesin, Christian
name: Hoylaerts, Marc F.
name: Plaisance, Stéphane
name: Collen, Désiré
name: Conway, Edward M.
name: Wehrle-Haller, Bernhard
name: Carmeliet, Peter
Publisher: name: Columbia University
Year: 2005
Subjects: Cytology
Medicine

description: Mechanisms regulating thrombus stabilization remain largely unknown. Here, we report that loss of any 1 of the Gas6 receptors (Gas6-Rs), i.e., Tyro3, Axl, or Mer, or delivery of a soluble extracellular domain of Axl that traps Gas6 protects mice against life-threatening thrombosis. Loss of a Gas6-R does not prevent initial platelet aggregation but impairs subsequent stabilization of platelet aggregates, at least in part by reducing “outside-in” signaling and platelet granule secretion. Gas6, through its receptors, activates PI3K and Akt and stimulates tyrosine phosphorylation of the β3 integrin, thereby amplifying outside-in signaling via αIIbβ3. Blocking the Gas6-R–αIIbβ3 integrin cross-talk might be a novel approach to the reduction of thrombosis.
Somatic Cell Mutants Resistant to Retrovirus Replication: Intracellular Blocks during the Early Stages of Infection
Creators: name: Gao, Guangxia
name: Goff, Stephen P.
Publisher: name: Columbia University
Year: 1999
Subjects: Molecular biology
Virology
Cytology

description: To identify cellular functions involved in the early phase of the retroviral life cycle, somatic cell mutants were isolated after selection for resistance to infection. Rat2 fibroblasts were treated with chemical mutagens, and individual virus-resistant clones were recovered after selection for resistance to infection. Two clones were characterized in detail. Both mutant lines were resistant to infection by both ecotropic and amphotropic murine viruses, as well as by human immunodeficiency virus type 1 pseudotypes. One clone showed a strong block to reverse transcription of the retroviral RNA, including formation of the earliest DNA products. The second clone showed normal levels of viral DNA synthesis but did not allow formation of the circular DNAs normally found in the nucleus. Cell fractionation showed that the viral preintegration complex was present in a form that could not be extracted under conditions that readily extracted the complex from wild-type cells. The results suggest that the DNA was trapped in a nonproductive state and excluded from the nucleus of the infected cell. The properties of these two mutant lines suggest that host gene products play important roles both before and after reverse transcription.
Additional file 7 of Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia
Creators: name: Molina - de la Fuente, Irene
name: Yimar, Mulat
name: García, Luz
name: González, Vicenta
name: Amor, Arancha
name: Anegagrie, Melaku
name: Benito, Agustín
name: Martínez, Javier
name: Moreno, Marta
name: Berzosa, Pedro
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S3. Structural organisation of pfhrp3 amino acid repeats types. The most common organisation of repeats started with one repeat type 1 followed by one repeat type 15 and around 10 consecutive repeats of type 16 ending with one repeat of type 7. Then, after a space of 33 aa without classified repeats, there were interspersed repeats of type 17, more abundant, and type 18. It ends with two repeats of type 4.
ERK Phosphorylates p66shcA on Ser36 and Subsequently Regulates p27^kip1 Expression via the Akt-FOXO3a Pathway: Implication of p27^kip1 in Cell Response to Oxidative Stress
Creators: name: Hu, Yuanyu
name: Wang, Xueying
name: Zeng, Li
name: Cai, De-Yu
name: Sabapathy, Kanaga
name: Goff, Stephen P.
name: Firpo, Eduardo J.
name: Li, Baojie
Publisher: name: Columbia University
Year: 2005
Subjects: Molecular biology
Cytology

description: Mice deficient for p66shcA represent an animal model to link oxidative stress and aging. p66shcA is implicated in oxidative stress response and mitogenic signaling. Phosphorylation of p66shcA on Ser36 is critical for its function in oxidative stress response. Here we report the identification of ERK as the kinase phosphorylating p66shcA on Ser36. Activation of ERKs was necessary and sufficient for Ser36 phosphorylation. p66shcA interacted with ERK and was demonstrated to be a substrate for ERK, with Ser36 being the major phosphorylation site. Furthermore, in response to H2O2, inhibition of ERK activation repressed p66shcA-dependent phosphorylation of FOXO3a and the down-regulation of its target gene p27kip1. Down-regulation of p27 might promote cell survival, as p27 played a proapoptotic role in oxidative stress response. As a feedback regulation, Ser36 phosphorylated p66shcA attenuated H2O2-induced ERK activation, whereas p52/46shcA facilitated ERK activation, which required tyrosine phosphorylation of CH1 domain. p66shcA formed a complex with p52/46ShcA, which may provide a platform for efficient signal propagation. Taken together, the data suggest there exists an interplay between ERK and ShcA proteins, which modulates the expression of p27 and cell response to oxidative stress.
Spectropolarimetric study of the classical Cepheid $η$ Aql: pulsation and magnetic field
Creators: name: Butkovskaya, V.
name: Plachinda, S.
name: Baklanova, D.
name: Butkovskyi, V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the results of spectropolarimetric study of the classical Cepheid $η$ Aql. We found that the longitudinal magnetic field of $η$ Aql sinusoidally varies with the radial pulsation period, while the amplitude $B$, mean field $B_0$, and phases of maximum and minimum field change from year to year. We hypothesize that possible reasons of those variations are stellar axial rotation or dynamo mechanisms.
description: 2 pages, 1 figure, 1 table. To be published in conference proceedings of IAU Symposium 301: Precision Asteroseismology, August 2013, Wroclaw, Poland
Endophilins Interact with Moloney Murine Leukemia Virus Gag and Modulate Virion Production.
Creators: name: Wang, Margaret Q.
name: Kim, Wankee
name: Gao, Guangxia
name: Morse, Herbert C.
name: De Camilli, Pietro
name: Goff, Stephen P.
name: Torrey, Ted A.
Publisher: name: Columbia University
Year: 2003
Subjects: Molecular biology
Oncology
Virology

description: Background
The retroviral Gag protein is the central player in the process of virion assembly at the plasma membrane, and is sufficient to induce the formation and release of virus-like particles. Recent evidence suggests that Gag may co-opt the host cell's endocytic machinery to facilitate retroviral assembly and release.

Results
A search for novel partners interacting with the Gag protein of the Moloney murine leukemia virus (Mo-MuLV) via the yeast two-hybrid protein-protein interaction assay resulted in the identification of endophilin 2, a component of the machinery involved in clathrin-mediated endocytosis. We demonstrate that endophilin interacts with the matrix or MA domain of the Gag protein of Mo-MuLV, but not of human immunodeficiency virus, HIV. Both exogenously expressed and endogenous endophilin are incorporated into Mo-MuLV viral particles. Titration experiments suggest that the binding sites for inclusion of endophilin into viral particles are limited and saturable. Knock-down of endophilin with small interfering RNA (siRNA) had no effect on virion production, but overexpression of endophilin and, to a lesser extent, of several fragments of the protein, result in inhibition of Mo-MuLV virion production, but not of HIV virion production.

Conclusions
This study shows that endophilins interact with Mo-MuLV Gag and affect virion production. The findings imply that endophilin is another component of the large complex that is hijacked by retroviruses to promote virion production.
Etude expérimentale d'une machine Stirling destinée à une application automobile
Creators: name: Nguyen, Philippe
name: Bégot, Sylvie
name: Lanzetta, François
name: Djetel, Steve
name: Bou Nader, Wissam
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: Machines thermiques
Expérimentation

description: Les machines Stirling font partie des technologies qui sont à nouveau étudiées en remplacement de technologies peu compatibles avec la vision actuelle du développement durable. Fonctionnant en mode moteur, ces machines convertissent une énergie thermique en énergie mécanique donc potentiellement en électricité. L'apport de chaleur est externe à la machine ce qui les rend très polyvalentes vis-à-vis des sources thermiques : biocarburants, carburants solides, récupération de chaleur, sources solaires. Elles permettent donc d'utiliser des sources à faible impact carbone. Des études sont menées en collaboration avec la société PSA pour développer une machine pour une application automobile. La machine Stirling est alors utilisée pour charger la batterie d'un véhicule hybride et la source thermique peut être un biocarburant ou un carburant solide. Un prototype de puissance théorique 10 kW a été développé. Ses principaux paramètres sont un volume balayé par le piston de $45\cdot10^{-4}\ \unit{m^3}$, une pression nominale de 40 bar, des températures nominales chaudes et froides de 650$^{\circ}$C et 65$^{\circ}$C respectivement. Le gaz de travail est de l'azote. Les matériaux utilisés sont l'acier inoxydable sauf pour l'échangeur froid qui est en aluminium. Le régénérateur est constitué par des grilles métalliques. Le banc d'essai utilisé pour valider le prototype est décrit. La source chaude est constituée par un four électrique thermiquement isolé qui est placé sur l'échangeur chaud de la machine. Le four est alimenté par un alternostat. La puissance du four est réduite par rapport à la puissance nominale de la machine car il ne délivre que 7 kW. Le refroidissement est assuré par la circulation d'eau dans l'échangeur froid de la machine. Le démarrage de la machine est effectué par l'intermédiaire d'un variateur de fréquence de 11 kW qui alimente une machine asynchrone de 11 kW également. La liaison entre l'arbre de la machine électrique et le vilebrequin de la machine Stirling est assurée par un accouplement magnétique. L'instrumentation du banc comporte un capteur de pression dans le volume de compression de la machine, des capteurs de température sur la surface intérieure du four électrique, dans les volumes de détente et de compression de la machine, et en entrée et sortie des circuits de refroidissement (volume de compression, volume de rebond, accouplement magnétique), des débitmètres sur les circuits de refroidissement. Les résultats présentés montrent le fonctionnement de la machine lorsqu'elle est entraînée à plusieurs vitesses et plusieurs pressions de charge (pression sur cycle, températures moyennes, couple et vitesse instantanés, pertes dans les circuits de refroidissement). Des résultats sont également présentés en marche moteur à vide.
Spatial distribution and temporal evolution of crustal melt distribution beneath the East Pacific Rise at 9°–10°N inferred from 3-D seafloor compliance modeling
Creators: name: Zha, Yang
name: Webb, Spahr C.
name: Nooner, Scott L.
name: Crawford, Wayne C.
Publisher: name: Columbia University
Year: 2014
Subjects: subject: Plate tectonics
subject: Geophysics
subject: FOS: Earth and related environmental sciences

description: Determining the melt distribution in oceanic crust at mid-ocean ridges is critical to understanding how magma is transported and emplaced in the crust. Seafloor compliance—deformation under ocean wave forcing—is primarily sensitive to regions of low shear velocity in the crust, making it a useful tool to probe melt distribution. Analysis of compliance data collected at East Pacific Rise between 9° and 10°N through 3-D numerical modeling reveals strong along-axis variations in the lower crustal shear velocities, as well as temporal variation of crustal shear velocity near 9°48′N between measurements spanning 8 years. Compliance measured across the rise axis at 9°48′N and 9°33′N suggest a deep crustal low-velocity zone beneath the ridge axis, with a low Vs/Vp ratio consistent with melt in low aspect ratio cracks or sills. Changes in compliance measured at 9°48′N between years 1999 and 2007 suggest that the melt fraction in the axial crust decreased during this interval, perhaps following the 2005–2006 seafloor eruption. This temporal variability provides direct evidence for short-term variations of the magmatic system at a fast spreading ridge.
Magnetic imaging of topological antiferromagnets
Creators: name: Sass, Paul
Publisher: name: No Publisher Supplied
Year: 2020

description: Antiferromagnetic order in topological materials has recently become incredibly important in the quest for exotic phenomena such as high temperature quantum anomalous Hall effect, quantized magnetoelectric effect, chiral edge modes, and Weyl and Dirac semimetal states. However, there is a lack of understanding of the antiferromagnetic domains and domain walls in these materials. The control of these domain walls or spin textures is not only important for controlling these states, but also crucial for spintronic applications of antiferromagnets. Despite many efforts, it has been challenging to directly visualize antiferromagnetic domains or domain walls with nanoscale resolution, especially in magnetic field.In this thesis, we show magnetic imaging of domain walls in several uniaxial antiferromagnets including the topological insulator MnBi$_2$Te$_4$ family and the Dirac semimetal EuMnBi$_2$, using cryogenic magnetic force microscopy (MFM). Our MFM results reveal higher magnetic susceptibility inside the domain walls than in domains. Domain walls in these antiferromagnets form randomly with strong thermal and magnetic field dependence.Through this application, we also present microscopic evidence of the persistence of uniaxial A-type antiferromagnetic order to the surface layers of MnBi$_2$Te$_4$ single crystals using magnetic force microscopy. Our results reveal termination-dependent magnetic contrast across both surface step edges and domain walls, which can be screened by thin layers of soft magnetism. The robust surface A-type order is further corroborated by the observation of termination-dependent surface spin-flop transitions, which have been theoretically proposed decades ago and not observed in natural antiferromagnets until now.The direct visualization of these domain walls and domain structures in magnetic field not only provides key ingredients for understanding the electronic properties of the antiferromagnetic topological insulator MnBi$_2$Te$_4$, but also opens both a new way of exploring intrinsic surface metamagnetic transitions in natural antiferromagnets and a new path toward control and manipulation of domain walls or spin textures in functional antiferromagnets.
Stockage thermique latent pour la récupération de chaleur fatale (120 - 160$^{\circ}$C) : stabilité des matériaux
Creators: name: Lalau, Yasmine
name: Haillot, Didier
name: Rigal, Sacha
name: Bédécarrats, Jean-Pierre
Publisher: name: Société Française de Thermique
Year: 2020
Subjects: Stockage thermique
Matériaux à changement de phase
Vieillissement
Chaleur fatale
Efficacité énergétique

description: L'industrie européenne consomme plus de la moitié de son énergie sous forme de chaleur ($\approx1800~\unit{TWH.an^{-1}}$) dont une partie est perdue lors du fonctionnement des procédés, majoritairement entre 100 et 200$^{\circ}$C. La récupération et la valorisation de cette chaleur dite fatale permet de fournir une chaleur à empreinte $\unit{CO_2}$eq nulle et de réduire les coûts de production. L'industrie manque de solutions rentables et robustes pour valoriser la chaleur fatale entre 100 et 200$^{\circ}$C, en adéquation aux besoins de consommations. Dans cet objectif, un système de stockage d'énergie par chaleur latente est envisagé entre 120 et 160$^{\circ}$C, nécessitant des matériaux présentant des performances thermiques élevées et stables dans le temps ainsi qu'un coût abordable. Cette communication expose les critères de sélection d'un panel de matériaux ayant abouti à la caractérisation et à l'étude du vieillissement de deux candidats prometteurs.
A Parallel Algorithm for Calculation of Large Determinants with High Accuracy for GPUs and MPI clusters
Creators: name: Beliakov, Gleb
name: Matiyasevich, Yuri
Publisher: name: arXiv
Year: 2013
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Mathematical Software (cs.MS)
subject: Numerical Analysis (math.NA)
subject: Number Theory (math.NT)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: D.1.3; G.1.0; G.1.3
subject: 65F40, 68W10, 11M26

description: We present a parallel algorithm for calculating very large determinants with arbitrary precision on computer clusters. This algorithm minimises data movements between the nodes and computes not only the determinant but also all minors corresponding to a particular row or column at a little extra cost, and also the determinants and minors of all submatrices in the top left corner at no extra cost. We implemented the algorithm in arbitrary precision arithmetic, suitable for very ill conditioned matrices, and empirically estimated the loss of precision. The algorithm was applied to studies of Riemann's zeta function.
Additional file 8 of Deletion patterns, genetic variability and protein structure of pfhrp2 and pfhrp3: implications for malaria rapid diagnostic test in Amhara region, Ethiopia
Creators: name: Molina - de la Fuente, Irene
name: Yimar, Mulat
name: García, Luz
name: González, Vicenta
name: Amor, Arancha
name: Anegagrie, Melaku
name: Benito, Agustín
name: Martínez, Javier
name: Moreno, Marta
name: Berzosa, Pedro
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Figure S4. Tertiary protein structure models according to template-based prediction.
Impact of Long-Term Filter Cigarette Usage on Lung and Larynx Cancer Risk: A Case-Control Study
Creators: name: Stellman, Steven D.
name: Wynder, Ernst L.
Publisher: name: Columbia University
Year: 1979
Subjects: Epidemiology
Oncology
Public health

description: A case-control study was conducted among 1,034 white male and female hospital patients with histologically proved lung cancer (Kreyberg type I) or larynx cancer. After adjustment for duration of the smoking habit, inhalation, and butt length, relative risks of developing lung or larynx cancer were consistently lower among long-term smokers of filter cigarettes than among smokers of nonfilter cigarettes, irrespective of quantity smoked. Relative risks in all groups declined with increased years of smoking cessation. The observed risk reduction among current smokers of filter cigarettes was consistent with that expected, considering that these persons had smoked the older high-tar nonfilter cigarettes for a large proportion of their Iives.
Quantum Monte Carlo study of the dynamic structure factor in the gas and crystal phase of hard-sphere bosons
Creators: name: Rota, Riccardo
name: Tramonto, Filippo
name: Galli, Davide Emilio
name: Giorgini, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the dynamic structure factor of a system of Bose particles at zero temperature using quantum Monte Carlo methods. Interactions are modeled using a hard-sphere potential of size $a$ and simulations are performed for values of the gas parameter $na^3$ ranging from the dilute regime up to densities $n$ where the thermodynamically stable phase is a solid. With increasing density we observe a crossover of the dispersion of elementary excitations from a Bogoliubov-like spectrum to a phonon--maxon--roton curve and the emergence of a broad multiphonon contribution accompanying the single-quasiparticle peak. In particular, for $na^3=0.2138$, which corresponds to superfluid $^4$He at equilibrium density, the extracted spectrum turns out to be in good agreement with the experimental energy--momentum dispersion relation in the roton region and for higher momenta. The behavior of the spectral function at the same density in the stable solid and metastable gas phase above the freezing point is also discussed.
MPEC 2023-V88 : 2023 VQ2
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 VQ2

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.