cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Infections associées aux soins : prise en compte de la complexité des populations bactériennes dans l’environnement hospitalier
Creators: name: Jumas-Bilak, Estelle
Publisher: name: Health & Co
Year: 2019

description: Malgré des publications récentes très significatives, les démarches pour établir des recommandations basées sur la preuve et les méta-analyses dans le domaine du risque environnemental hospitalier se heurtent à la faiblesse des liens de causalité. Dans cet article, nous posons et discutons l’hypothèse qu’une microbiologie de l’environnement hospitalier intégrant peu à peu la complexité de l’écologie microbienne pourrait permettre une meilleure compréhension des mécanismes de transmission des infections associées aux soins (IAS) impliquant l’environnement, et donc une meilleure argumentation sur les mesures à mettre en œuvre. Cette mise au point, non exhaustive, pose les questions 1) de l’existence, au sein des espèces de bactéries responsables d’IAS, d’écotypes bactériens spécialisés dans l’écosystème hospitalier incluant le patient ; 2) du rôle de la variabilité et de la biodiversité des pathogènes hospitaliers dans leur succès épidémique et leur succès d’implantation grâce à une « assurance collective » ; 3) d’un changement de paradigme, en considérant comme unité de transmission nosocomiale non pas la souche pathogène isolée mais l’ensemble des génotypes à risque chez le patient et dans son environnement hospitalier ; 4) par conséquent, de la pertinence de la surveillance microbiologique de l’environnement telle qu’elle est réalisée aujourd’hui. Le challenge est aujourd’hui la confrontation des données microbiologiques aux situations clinico-épidémiques, afin de déterminer des indicateurs clinico-environnementaux permettant d’évaluer précisément le risque infectieux.
Isolated versus Condensed Anion Structure IV: An NQR Study and X-ray Structure Analysis of [H3N(CH2)3NH3]CdI4 * 2H2O, [H3CNH2(CH2)3NH3]CdBr4, [(CH3)4N]2CdBr 4, and [(CH3)3S]2CdBr4*
Creators: name: Ishihara, Hideta
name: Horiuchi, Keizo
name: Dou, Shi-Qi
name: Gesing, Thorsten M.
name: Buhl, Josef-Christian
name: Paulus, Helmut
name: Fuess, Hartmut
Publisher: name: Berlin, Boston : De Gruyter
Year: 1998
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The phase I of [H3N(CH2)3NH3]CdI4 • 2H2O (1) crystallizes with isolated [CdI4]2-tetrahedra; monoclinic, C2/c, Z = 8, a = 1702.6(3), b= 1459.3(3), c= 1555.5(3) pm, and ß= 120.32(3)° at 299 K. (1) shows a first-order phase transition at T1↔II = 245 K. The eight 127I(v1) NQR lines in phase II change discontinuously into four lines in phase I. The transition entropy from DSC measurements, ∆S = 5.0 J K1- mol-1 , shows that this transition is probably due to order-disorder of cations. [H3CNH2(CH2)3NH3]CdBr4 (2) crystallizes with isolated [CdBr4]2- tetrahedra; orthorhombic P212121, Z = 4,a= 1447.8(5), b = 1280.3 (4), c = 709.7(3) pm at 299 K. (2) shows four 81Br NQR lines between II and around 325 K, above which temperature the lines disappear. [(CH3)4N]2CdBr4 (3) shows a second-order phase transition at T1↔II = 271 K. Three of four 81Br NQR lines in phase II disappear below this transition point, the other line can be observed up to 315 K. The transition entropy, ∆S = 9.01 J KT-1 mol-1 , indicates that the transition is an order-disorder type of the cations. [(CH3)3S]2CdBr4 (4) shows a first-order type phase transition at T1↔II = 304 K. The four lines spectrum of 81Br NQR is observed in phase II and disappears above the transition point. The transition entropy, ∆S = 46.8 J K- 1 mol-1 is abnormally large. The role of the hydrogen bond and the bridging power between the halogen and cadmium atoms upon the formation of the condensed anion structure is discussed.
title: Évaluation de la prise en charge des cas d’infection à Clostridium difficile dans les Ehpad de Bourgogne Franche-Comté
Creators: name: Benoît, Hélène
Publisher: name: Health & Co
Year: 2019

description: L’objectif de cette étude était d’évaluer la gestion des cas d’infection à Clostridium difficile (ICD) dans les établissements d’hébergement pour personnes âgées dépendantes (Ehpad) de Bourgogne Franche-Comté. Méthode. Une étude transversale à visée descriptive a été réalisée en juin 2017 au travers d’un questionnaire d’évaluation envoyé à 40 Ehpad tirés au sort. Résultats. Trente-neuf ont retourné le questionnaire dont 19 établissements publics. La capacité d’accueil médiane des Ehpad participants était de 68 lits. Concernant l’évaluation des précautions complémentaires contact (PCC), 13% des Ehpad placent ou laissent les résidents infectés par C. difficile en chambre double ; 49% réalisent un lavage simple suivi d’une friction hydro-alcoolique ; 95% recommandent le port de gants et 74% le port de la surblouse ou du tablier plastique à usage unique ; le nettoyage des bassins et des seaux de chaise percée est dans 26% des cas non conforme avec l’utilisation de douchette ; l’entretien quotidien de la chambre est réalisé avec de l’hypochlorite de sodium dans 69% des cas et les 3 temps du bionettoyage ne sont pas systématiques. Concernant le diagnostic biologique, les Ehpad semblent avoir des difficultés vis-à-vis des tests effectués et dans leur interprétation. Conclusion. Cette étude montre qu’il persiste une inadéquation entre les recommandations en cas d’ICD et les pratiques au sein des Ehpad pour la mise en place des PCC et des modalités de diagnostic. Des actions de sensibilisation et d’information restent nécessaires.
Isolated versus Condensed Anion Structure V: X-ray Structure Analysis and 81Br NQR of t-butylammonium tribromocadmate(II)-1/2 water, i-propylammonium tribromocadmate(II), and tris-trimethylammonium heptabromodicadmate(II)
Creators: name: Ishihara, Hideta
name: Horiuchi, Keizo
name: Dou, Shi-Qi
name: Gesing, Thorsten M.
name: Buhl, Josef-Christian
name: Paulus, Helmut
name: Svoboda, Ingrid
Publisher: name: Berlin, Boston : De Gruyter
Year: 1999
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The crystal structures of the condensed bromocadmate anions with chains built of [CdBr3]∞ were de-termined by X-ray structure analysis at 300 K. In addition, the temperature dependence of the 81Br NQR frequencies was observed. [(t-C4H9NH3)CdBr3]2-H2O (1) tallizes with a double Br bridged chain (monoclinic, P2/c, Z = 4, a = 1963.4(8), b 87.7(4), c 1432.1(6) pm, and ß= 110.66(2)°). Six 81Br NQR lines are observed at temperatures between 77 and 330 K. (i-C3H7NH-3)CdBr3 (2) crystalliz-es with a triple Br bridged chain (orthrhombic, Pbca, Z= 8, a = 1975.4(6), b = 1415.8(4), c = 690.1(2) pm). (2) shows three 81Br NQR lines at temperatures between 77 and 193 K. A phase transition occurs at 224 K. The structure of [(CH3)3 NH]3Cd2Br7] (3) was redetermined. (3) consists of a triple Br bridged chain and a discrete [CdBr4] tetrahedron (hexagonal, P63mc, Z= 8, a = 1483.5(2), c = 685.7(5) pm). The structure of (3) is identical to the one reported by Daoud, Perret, and Dusausoy, Acta Crystallogr., B35, 2718 (1979). Three 81Br NQR lines are observed at temperatures between 77 and 243 K.
title: Objectif zéro bijou : une campagne efficace au centre hospitalier Métropole Savoie
Creators: name: Forget, Virginie
Publisher: name: Health & Co
Year: 2019

description: Objectif. L’objectif de la campagne était de réduire le port des bijoux (sur les mains et les poignets), de faux ongles, et de vernis à ongles par les soignants. Méthode. Une étude avant/après a été réalisée auprès du personnel du centre hospitalier Métropole Savoie (CHMS), sur le site de Chambéry (1 167 lits). La prévalence du port de bijoux, de vernis à ongles, et de faux ongles a été auditée (T0). Une campagne de sensibilisation utilisant différents outils a été menée. La prévalence a été ré-auditée à 3 mois (T1) et à 1 an (T2) post-campagne. Résultats. À T0, 512 (41,5%) membres du personnel portaient des bijoux, dont l’alliance majoritairement (25,6%). À T1, 213 (16,9%) membres du personnel portaient des bijoux (-59,3%, p<0,05), à T2, 171 en portaient (14,7%). En 2016, dans le pôle hébergement, 9 membres du personnel portaient des bijoux (6,5%), en 2017, dans le pôle chirurgie, 44 membres du personnel en portaient (15,6%). Conclusion. La reproductibilité de cette campagne efficace a été évaluée sur l’autre site du CHMS. Celle-ci pourrait être utilisée dans d’autres établissements, afin que l’absence de bijou soit respectée, pour une bonne hygiène des mains.
Influence of the magnetic material on tunneling magnetoresistance and spin-transfer torque in tunnel junctions: Ab initio studies
Creators: name: Franz, Christian
name: Czerner, Michael
name: Heiliger, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The dependence of tunneling magnetoresistance and spin-transfer torque in FeCo/MgO/FeCo tunnel junctions on the Co concentration and the bias voltage are investigated ab initio. We find that the tunneling magnetoresistance decreases with the Co concentration in contradiction with previous calculations but in agreement with recent experiments. This dependence is explained from bulk properties of the alloys. By using a realistic description of the disorder in the alloys we can show that even small amounts of disorder lead to a drastic drop in the tunneling magnetoresistance. This provides a quantitative explanation of the difference between calculated and measured values. The spin-transfer torque shows a linear voltage dependence for the in-plane component and a quadratic for the out-of-plane component for all concentrations at small bias voltages. In particular, the linear slope of the in-plane torque is independent of the concentration. For high bias voltages the in-plane torque shows a strong nonlinear deviation from the linear slope for high Co concentrations. This is explained from the same effects which govern the tunneling magnetoresistance.
description: 11 pages, 14 figures
The SWITCH test for discriminating quantum evolutions
Creators: name: Chamorro-Posada, Pedro
name: Garcia-Escartin, Juan Carlos
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a quantum circuit to discriminate between two arbitrary quantum evolution operators. It permits to test the equality of two quantum operators and to estimate a fidelity measure of them. The relation of the proposal to the SWAP test for discriminating two quantum states is analyzed. We also discuss potential applications for the discrimination of quantum communication channels and possible laboratory implementations with light along the same lines of recent experimental realizations of quantum superpositions of causal orders exploiting the different degrees of freedom of photons. We also discuss hardware efficient realizations for noisy intermediate scale quantum computers.
description: 7 pages, 8 figures. Comments welcome. Reviewed version. Added comments for efficient implementation on noisy intermediate scale quantum computers and an analysis of the average behaviour for Haar random unitaries
Dihedral Sieving Phenomena
Creators: name: Rao, Sujit
name: Suk, Joe
Publisher: name: arXiv
Year: 2017
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Cyclic sieving is a well-known phenomenon where certain interesting polynomials, especially $q$-analogues, have useful interpretations related to actions and representations of the cyclic group. We propose a definition of sieving for an arbitrary group $G$ and study it for the dihedral group $I_2(n)$ of order $2n$. This requires understanding the generators of the representation ring of the dihedral group. For $n$ odd, we exhibit several instances of dihedral sieving which involve the generalized Fibonomial coefficients, recently studied by Amdeberhan, Chen, Moll, and Sagan. We also exhibit an instance of dihedral sieving involving Garsia and Haiman's $(q,t)$-Catalan numbers.
description: 10 pages
title: Gestion d’une épidémie à bactérie hautement résistante émergente dans un service de médecine
Creators: name: Lizon, Julie
Publisher: name: Health & Co
Year: 2019

description: Un service de médecine de 20 lits du centre hospitalier régional universitaire (CHRU) a été confronté à une épidémie d’Enterococcus faecium Van A (ERV). L’épidémie s’est étalée sur cinq semaines durant l’été 2017. Le premier cas d’ERV a été découvert sur un prélèvement rectal datant du 1er septembre 2017. Nous avons recherché les patients contacts (PC) depuis la date d’admission du cas index au CHRU. Les mesures spécifiques sont mises en place pour ce patient et les PC. Après lancement des dépistages, neuf cas secondaires sont détectés. Une cellule de crise décide de maintenir le « cohorting » initialement mis en place dans le secteur conventionnel, de fermer les lits dans les chambres doubles et de renforcer la formation des soignants aux précautions standard. Après investigations, le patient index était le premier cas découvert. Il a été hospitalisé en Algérie trois mois avant son admission et cela n’avait pas été pris en compte lors de sa prise en charge initiale. Les neuf cas secondaires ont été générés avant la mise en place des mesures spécifiques. Suite à cet épisode, une sensibilisation des soignants à la politique locale de dépistage est réalisée, concernant notamment la recherche systématique à l’admission des antécédents d’hospitalisation à l’étranger dans l’année. Cette mesure est désormais rappelée tous les six mois auprès des internes et des nouveaux arrivants (assistants, praticiens hospitaliers). Cette expérience rappelle que la détection des patients à risque de portage d’une BHRe est un élément primordial pour maîtriser la diffusion de ces dernières au sein d’un établissement, en complément des autres mesures.
Anisotropic flow: A case for Bottomonia
Creators: name: Das, Debasish
name: Dutta, Nirupam
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Studies of $J/$$ψ$ $v_2$ at RHIC and LHC energies have provided important elements towards the understanding on the production mechanisms and on the thermalization of charm quarks. Bottomonia has an advantage since it is a cleaner probe. A brief discussion has been provided for $Υ(1S)$ $v_2$, which can become the new probe for QGP, including the necessity of studies for small systems.
description: 15 pages (This version is most updated)
Light-Induced Reactions of Chlorpromazine in the Presence of a Heterogeneous Photocatalyst
Creators: name: Arimi, Arsou
name: Dillert, Ralf
name: Dräger, Gerald
name: Bahnemann, Detlef W.
Publisher: name: Basel : MDPI
Year: 2019
Subjects: subject: chlorpromazine
subject: chlorpromazine sulfoxide
subject: KRONOClean 7000
subject: visible light-driven photocatalysis
subject: HPLC-MS
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: A commercial carbon-modified titanium dioxide, KRONOClean 7000, was applied as a UV(A) and visible-light active photocatalyst to investigate the conversion of the antipsychotic pharmaceutical chlorpromazine in aqueous phase employing two monochromatic light sources emitting at wavelengths of 365 and 455 nm. Photocatalytic and photolytic conversion of chlorpromazine under both anaerobic and aerobic conditions was analyzed using a HPLC-MS technique. Depending on the irradiation wavelength and presence of oxygen, varying conversion rates and intermediates revealing different reaction pathways were observed. Upon visible light irradiation under aerobic conditions, chlorpromazine was only converted in the presence of the photocatalyst. No photocatalytic conversion of this compound under anaerobic conditions upon visible light irradiation was observed. Upon UV(A) irradiation, chlorpromazine was successfully converted into its metabolites in both presence and absence of the photocatalyst. Most importantly, chlorpromazine sulfoxide, a very persistent metabolite of chlorpromazine, was produced throughout the photolytic and photocatalytic conversions of chlorpromazine under aerobic conditions. Chlorpromazine sulfoxide was found to be highly stable under visible light irradiation even in the presence of the photocatalyst. Heterogeneous photocatalysis under UV(A) irradiation resulted in a slow decrease of the sulfoxide concentration, however, the required irradiation time for its complete removal was found to be much longer compared to the removal of chlorpromazine at the same initial concentration.
Chow Rings of Vector Space Matroids
Creators: name: Hameister, Thomas
name: Rao, Sujit
name: Simpson, Connor
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The Chow ring of a matroid (or more generally, atomic latice) is an invariant whose importance was demonstrated by Adiprasito, Huh and Katz, who used it to resolve the long-standing Heron-Rota-Welsh conjecture. Here, we make a detailed study of the Chow rings of uniform matroids and of matroids of finite vector spaces. In particular, we express the Hilbert series of such matroids in terms of permutation statistics; in the full rank case, our formula yields the maj-exc $q$-Eulerian polynomials of Shareshian and Wachs. We also provide a formula for the Charney-Davis quantities of such matroids, which can be expressed in terms of either determinants or $q$-secant numbers.
Additional file 1 of Core components of a Community of Practice to improve community health worker performance: a qualitative study
Creators: name: Hennein, Rachel
name: Ggita, Joseph M.
name: Turimumahoro, Patricia
name: Ochom, Emmanuel
name: Gupta, Amanda J.
name: Katamba, Achilles
name: Armstrong-Hough, Mari
name: Davis, J. Lucian
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Science Policy

description: Additional file 1. Interview guide.
Limited Potential or Unfavorable Manipulations? Strategies Toward Efficient Mesenchymal Stem/Stromal Cell Applications
Creators: name: Lavrentieva, Antonina
name: Hoffmann, Andrea
name: Lee-Thedieck, Cornelia
Publisher: name: Lausanne : Frontiers Media
Year: 2020
Subjects: subject: mesenchymal stem/stromal cell
subject: donor variability
subject: expansion protocols
subject: bioreactor
subject: potency
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Despite almost 50 years of research and over 20 years of preclinical and clinical studies, the question of curative potential of mesenchymal stem/stromal cells (MSCs) is still widely discussed in the scientific community. Non-reproducible treatment outcomes or even absence of treatment effects in comparison to control groups challenges the potential of these cells for routine application both in tissue engineering and in regenerative medicine. One of the reasons of such outcomes is non-standardized and often disadvantageous ex vivo manipulation of MSCs prior therapy. In most cases, clinically relevant cell numbers for MSC-based therapies can be only obtained by in vitro expansion of isolated cells. In this mini review, we will discuss point by point possible pitfalls in the production of human MSCs for cell therapies, without consideration of material-based applications. Starting with cell source, choice of donor and recipient, as well as isolation methods, we will then discuss existing expansion protocols (two-/three-dimensional cultivation, basal medium, medium supplements, static/dynamic conditions, and hypoxic/normoxic conditions) and influence of these strategies on the cell functionality after implantation. The role of potency assays will also be addressed. The final aim of this mini review is to illustrate the heterogeneity of current strategies for gaining MSCs for clinical applications with their strengths and weaknesses. Only a careful consideration and standardization of all pretreatment processes/methods for the different applications of MSCs will ensure robust and reproducible performance of these cell populations in the different experimental and clinical settings.
Linear localization of zero modes in weakly coupled non-Hermitian reservoirs
Creators: name: Qi, Bingkun
name: Ge, Li
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Topological and symmetry-protected non-Hermitian zero modes have attracted considerable interest in the past few years. Here we reveal that they can exhibit an unusual behavior when transitioning between the extended and localized regimes: When weakly coupled to a non-Hermitian reservoir, such a zero mode displays a linearly decreasing amplitude as a function of space, which is not caused by an EP of a Hamiltonian, either of the entire system or the reservoir itself. Instead, we attribute it to the non-Bloch solution of a linear homogeneous recurrence relation, together with the underlying non-Hermitian particle-hole symmetry and the zeroness of its energy.
description: 11 pages, 10 figures
Impact of antenna phase center models: From observation to parameter domain
Creators: name: Kersten, Tobias
name: Hiemer, Leonard
name: Schön, Steffen
Publisher: name: Prague : IUGG
Year: 2015
Subjects: subject: GPS/GNSS antennas
subject: GNSS receiver antenna calibration
subject: Carrier phase centre variation (PCV)
subject: uncertainty
subject: GPS/GNSS-Antennen
subject: Trägerphasen-Variationen (PCV)
subject: Unischerheiten
subject: GPS/GNSS-Empfänger
subject: GPS/GNSS-Antennenkalibrierung
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: For precise GNSS applications like positioning, navigation and timing (PNT) as well as for troposphere studies, stable and accurate calibrations of the carrier phase center variations (PCV) for individual antennas have to be provided by calibration institutions. Beside an anechoic chamber calibration, the Institut für Erdmessung (IfE) uses a field approach with a precisely calibrated robot. Ring analyses between different calibration institutions determined with geodetic graded antennas show comparability at the level of 1mm which is a threshold accepted by the International GNSS Service (IGS). Several contributions and papers discuss the impact of the variability of calibration models on the coordinate or parameter domain, respectively. This can only be a first approximation since complex interactions depending on the processing philosophy, propagates PCVs differently to the parameters, so that unexpected discrepancies on the parameter domain can occur and have to be analysed consequently. This contribution presents a concept to study the impact of PCVs on the observation and parameter domain. In this concept the PCVs will be formulated not as classical tabulated PCV models but with their corresponding spherical harmonic (SH) coefficients. Finding a transfer function to analytically study the impact of the PCVs on the individual parameter like i.e. coordinates, time and troposphere as well as ambiguities is one of the three main goals in this concept. Exemplarily we will show first results and will study error functions between type and individual calibration models based on the proposed concept.
On the Measure of Maximal Entropy for Finite Horizon Sinai Billiard Maps
Creators: name: Baladi, Viviane
name: Demers, Mark
Publisher: name: arXiv
Year: 2018
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37D50 (Primary) 37C30, 37B40, 37A25, 46E35, 47B38 (Secondary)

description: The Sinai billiard map $T$ on the two-torus, i.e., the periodic Lorentz gas, is a discontinuous map. Assuming finite horizon, we propose a definition $h_*$ for the topological entropy of $T$. We prove that $h_*$ is not smaller than the value given by the variational principle, and that it is equal to the definitions of Bowen using spanning or separating sets. Under a mild condition of sparse recurrence to the singularities, we get more: First, using a transfer operator acting on a space of anisotropic distributions, we construct an invariant probability measure $μ_*$ of maximal entropy for $T$ (i.e., $h_{μ_*}(T)=h_*$), we show that $μ_*$ has full support and is Bernoulli, and we prove that $μ_*$ is the unique measure of maximal entropy, and that it is different from the smooth invariant measure except if all non grazing periodic orbits have multiplier equal to $h_*$. Second, $h_*$ is equal to the Bowen--Pesin--Pitskel topological entropy of the restriction of $T$ to a non-compact domain of continuity. Last, applying results of Lima and Matheus, as upgraded by Buzzi, the map $T$ has at least $C e^{nh_*}$ periodic points of period $n$ for all large enough $n \in \mathbb{N}$.
description: 69 +1 pages, 3 Figures. Version v3 is the electronic copy of the published version. v4 contains a supplement describing minor typos
title: Bactéries hautement résistantes émergentes : les traquer au fond des toilettes !
Creators: name: Lier, Marie-Laure
Publisher: name: Health & Co
Year: 2019

description: Huit patients du même service ont été identifiés porteurs de la même souche de Klebsiella pneumoniae NDM entre janvier 2016 et janvier 2018. Nous décrivons l’investigation de cette épidémie. Matériel et méthodes. Une courbe épidémique et un tableau synoptique ont permis de décrire l’épisode. L’investigation a été réalisée à partir de prélèvements microbiologiques cliniques et de dépistage, des dossiers patients, de prélèvements environnementaux ainsi que d’un audit des organisations et des pratiques. Résultats. Entre le 5 septembre et le 31 décembre 2017, 7 cas de colonisation ou d’infection à K. pneumoniae NDM ont été signalés par le même service ; une souche identique a déjà été isolée en 2016. Les patients ont tous séjourné dans la même chambre du service. Les principaux résultats de l’investigation montrent des locaux extrêmement vétustes, une insuffisance de leur entretien et des défauts de respect des précautions standard. La souche de K. pneumoniae NDM est finalement retrouvée dans le tartre de la cuvette des toilettes. Conclusion. Dans ce type d’épisode, l’enquêteur doit avoir à l’esprit les nombreux aléas susceptibles de compliquer ses investigations. L’origine de la contamination du cas index n’a pas été identifiée. Tout patient peut-être porteur de BMR voire de BHRe, ce qui justifie pleinement d’un haut niveau d’application des précautions standard.
Nonlinear Spectral Singularities and Lasing Threshold Condition
Creators: name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A spectral singularity is a mathematical notion with an intriguing physical realization in terms of certain zero-width resonances. In optics it manifests as lasing at the threshold gain. We explore the application of their recently-developed nonlinear generalization in the study of the effect of a nonlinearity on the lasing threshold condition for an infinite planar slab of gain medium. In particular, for a Kerr nonlinearity, we derive an explicit expression for the intensity of the emitted waves from the slab and discuss the implications of our results for the time-reversed system that acts as a coherent perfect absorber.
description: 4 pages
IfE monthly gravity field solutions using the variational equations
Creators: name: Naeimi, Majid
name: Koch, Igor
name: Khami, Arman
name: Flury, Jakob
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: LUH-GRACE2018
subject: GRACE Satellite
subject: Time-Variable Earth's Gravity Field
subject: GRACE Satellit
subject: Schwerkraftfeld
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie

description: In this contribution, we present the LUH-GRACE2018 monthly gravity field solutions from GRACE-KBR measurements, which produced at Institut für Erdmessung (IfE) at Leibniz University of Hannover. Our solutions, based on the classical variational approach, are obtained in two processing steps. In the first step, the orbits of both satellites are dynamically integrated and the initial state vectors together with accelerometer bias parameters of both satellites are adjusted using GRACE L1B reduced dynamic orbit. In the second step the 6-hourly-arc normal equations are accumulated and the monthly gravity field spherical coefficients up to degree and order 80 are estimated along with the unknown parameters of step 1. The geoid degree standard deviations of our solutions show a very good agreement with the official solutions of CSR, GFZ and JPL. The differences are well below 0.1 of an order of magnitude indicating the success of our implementation. Details of processing steps and the mass variations derived from our solutions are presented.
Goldstone mode singularities in O(n) models
Creators: name: Kaupuzs, J.
name: Melnik, R. V. N.
name: Rimsans, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Monte Carlo (MC) analysis of the Goldstone mode singularities for the transverse and the longitudinal correlation functions, behaving as G_{\perp}(k) \simeq ak^{-λ_{\perp}} and G_{\parallel}(k) \simeq bk^{-λ_{\parallel}} in the ordered phase at k -> 0, is performed in the three-dimensional O(n) models with n=2, 4, 10. Our aim is to test some challenging theoretical predictions, according to which the exponents λ_{\perp} and λ_{\parallel} are non-trivial (3/2 \infty. We have also verified and confirmed the expected universality of bM^2/a^2 for the O(4) model, where simulations at two different temperatures (couplings) have been performed.
description: 8 pages, 5 figures
Kinematical LEO Orbit Determination with sequential time differenced GPS SST carrier phase observations
Creators: name: Shabanloui, Akbar
Publisher: name: Leibniz Universität Hannover
Year: 2007
Subjects: subject: Kinematical LEO Orbit Determination
subject: GPS Satellite-to-Satellite-Tracking (SST) carrier phase observations
subject: Kinematische LEO Bahnbestimmung
subject: GPS SST carrier phase Beobachtungen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::520 | Astronomie, Kartographie
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::629,1 | Luft- und Raumfahrttechnik

description: SST (Satellite to Satellite Tracking) observations between GPS and LEO (Low Earth Orbiter) play an important role for the determination of precise orbits of LEO satel- lites. These precise orbits are indispensable within the in-situ gravity field recovery procedure based on the in-situ analysis of the satellite’s dynamics. In this article a special technique to determine precise semi-analytical continuous orbits of short arcs of LEO is proposed. The method is based on the solution of Newton’s equation of motion solved as a boundary value problem, constituting the physical model, and zero difference LEO GPS SST carrier phase observations as measured quantities. The procedure allows to determine the orbits in the dynamical and the kinematical mode and everything in-between, considered as so-called reduced dynamic mode of varying level, depending on how much dynamic information is introduced into the orbit determination procedure. In this work, only the kinematical orbit determination mode is investigated. The satellite arcs are represented in the spectral domain. Special polynomials (i.e. Euler-Bernoulli polynomial) have to be used to avoid Gibbs’ effects at the boundaries of the arcs. The precisely kinematically determined short arcs can be used for regional as well as for global gravity field recovery based on the POD (Precise Orbit Determination) in-situ technique.
Long-Term Monitoring of Comet 103P/Hartley 2
Creators: name: Lin, Zhong-Yi
name: Lara, Luisa M.
name: Ip, Wing-Huen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We reported the monitoring results on spectrophotometry, photometry and imaging of comet 103P/Hartley 2 obtained at Lulin (1m), Calar Alto (2.2m) and Beijing Astronomical (2.16m) Observatory from April to December 2010. We found that a dust feature at sunward direction was detected starting from the end of September until the beginning of December (our last observation from the Lulin and Calar Alto observatory). Two distinct sunward jet features in the processed images were observed on October 11 and after October 29 until November 2. In parallel, the CN images reveal two asymmetrical jet features which are nearly perpendicular to the Sun-nucleus direction and this asymmetrical features implies that the comet was in a nearly side-on view in late-October and early-November. Additional to the jet features, the average result of the C2-to-CN production rate ratio ranges from 0.7 to 1.5 which places 103P/Hartley 2 as being of typical cometary chemistry. We found that the $r_h$ dependence for the dust production rate, Afrho (5,000 km), is -3.75+-0.45 before perihelion and is -3.44 +-1.20 during post-perihelion period. We detected the higher dust reddening is around the optocenter and getting bluer outward along the sunward jet feature and concluded that the former one, higher dust reddening, could be associated with strong jet activity and the latter one, the lowering of the reddening, might imply the optical properties changed or could be associated with outburst. The average dust color did not appear to vary significantly as the comet passed through perihelion.
Partial Torelli groups and homological stability
Creators: name: Putman, Andrew
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove a homological stability theorem for the subgroup of the mapping class group acting as the identity on some fixed portion of the first homology group of the surface. We also prove a similar theorem for the subgroup of the mapping class group preserving a fixed map from the fundamental group to a finite group, which can be viewed as a mapping class group version of a theorem of Ellenberg-Venkatesh-Westerland about braid groups. These results require studying various simplicial complexes formed by subsurfaces of the surface, generalizing work of Hatcher-Vogtmann.
description: 65 pages, 71 figures; major revision; to appear in Algebr. Geom. Topol
title: Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Southport Bulkhead Repair and Float Installation Project, King County, Washington, COE Number: NWS-2016-552
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-00108
Extending Kolmogorov's axioms for a generalized probability theory on collections of contexts
Creators: name: Svozil, Karl
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Kolmogorov's axioms of probability theory are extended to conditional probabilities among distinct (and sometimes intertwining) contexts. Formally, this amounts to row stochastic matrices whose entries characterize the conditional probability to find some observable (postselection) in one context, given an observable (preselection) in another context. As the respective probabilities need not (but, depending on the physical/model realization, can) be of the Born rule type, this generalizes approaches to quantum probabilities by Aufféves and Grangier, which in turn are inspired by Gleason's theorem.
description: 18 pages, 3 figures, greatly revised
Additional file 2 of Core components of a Community of Practice to improve community health worker performance: a qualitative study
Creators: name: Hennein, Rachel
name: Ggita, Joseph M.
name: Turimumahoro, Patricia
name: Ochom, Emmanuel
name: Gupta, Amanda J.
name: Katamba, Achilles
name: Armstrong-Hough, Mari
name: Davis, J. Lucian
Publisher: name: figshare
Year: 2022
Subjects: Medicine
Science Policy

description: Additional File 2. Contextual factors that facilitated Community of Practice activities.
Joining TWIP-Steel Simulation Models
Creators: name: Folgar Ribadas, H.
name: Böddeker, T.
name: Chergui, A.
name: Ivanjko, M.
name: Gili, F.
name: Behrens, S.
Publisher: name: Amsterdam : Elsevier
Year: 2017
Subjects: subject: TWIP-steel
subject: joining technologies
subject: numerical modelling
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: JoiningTWIP project aims to support the introduction of TWIP-steels for automotive applications (in cars, trucks and buses) by identifying possible applications and further developing mechanical and low-heat joining technologies to be able to implement multi-material design with TWIP-steels. To guarantee a full view of the project team members from steel industry, car manufacturers, joining technology suppliers and universities are working together. This work describes the simulation stage of the different technologies. During the project, the materials described in the scope of the project were tested in order to obtain material characterization. Also, the different multi-material joints were tested to describe the joining process and the joining quality. These results will be used to build complex simulation models and prototypes, which show the performance and the behavior of the joining processes of TWIP-steels. Five different technologies were analyzed in the scope of the project: clinching, high-speed bolt setting, resistance element welding (REW), friction element welding (FEW) and flow drill screwing (FDS). To guarantee the performance of the simulation models, the results were compared to the sampled joint and processes. An optimization process of the different technologies was applied to improve the quality and the performance of the different joints.
On symplectic fillings of small Seifert $3$-manifolds
Creators: name: Choi, Hakho
name: Park, Jongil
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics

description: In this paper, we investigate the minimal symplectic fillings of small Seifert 3-manifolds with a canonical contact structure. As a result, we classify all minimal symplectic fillings of small Seifert 3-manifolds satisfying certain conditions. Furthermore, we also demonstrate that every such a minimal symplectic filling is obtained by a sequence of rational blowdowns from the minimal resolution of the corresponding weighted homogeneous complex surface singularity.
description: 28 pages, 32 figures; Section 3 is added, Revised argument in Section 4
Towards independent control of polar and azimuthal anchoring
Creators: name: Anquetil-Deck, Candy
name: Cleaver, Douglas J.
name: Bramble, Jonathan P.
name: Atherton, Timothy J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Monte Carlo simulation, experiment and continuum theory are used to examine the anchoring exhibited by a nematic liquid crystal at a patterned substrate comprising a periodic array of rectangles that, respectively, promote vertical and planar alignment. It is shown that the easy axis and effective anchoring energy promoted by such surfaces can be readily controlled by adjusting the design of the pattern. The calculations reveal rich behavior: for strong anchoring, as exhibited by the simulated system, for rectangle ratios $\geq 2$ the nematic aligns in the direction of the long edge of the rectangles, the azimuthal anchoring coefficient changing with pattern shape. In weak anchoring scenarios, however, including our experimental systems, preferential anchoring is degenerate between the two rectangle diagonals. Bistability between diagonally-aligned and edge-aligned arrangement is predicted for intermediate combinations of anchoring coefficient and system length-scale.
description: 12 pages, 12 figures
Asymptotic Dimension of Graphs of Groups and One Relator Groups
Creators: name: Tselekidis, Panagiotis
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove a new inequality for the asymptotic dimension of HNN-extensions. We deduce that the asymptotic dimension of every finitely generated one relator group is at most two, confirming a conjecture of A.Dranishnikov. As further corollaries we calculate the exact asymptotic dimension of Right-angled Artin groups and we give a new upper bound for the asymptotic dimension of fundamental groups of graphs of groups.
description: 31 pages, 7 figures
title: Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for the Boeing Company’s Apron R Infrastructure Maintenance and Repair Project, King County, Washington, COE Number: NWS-2017-37
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-00109
In-situ microscopy and 2D fluorescence spectroscopy as online methods for monitoring CHO cells during cultivation
Creators: name: Bonk, Sophia
name: Sandor, Marko
name: Rüdinger, Ferdinand
name: Tscheschke, Bernd
name: Prediger, Andreas
name: Babitzky, Alexander
name: Solle, Dørte
name: Beutel, Sascha
name: Scheper, Thomas
Publisher: name: London : BioMed Central Ltd.
Year: 2011
Subjects: subject: Cell Density
subject: Calibration Model
subject: Cultivation Process
subject: Glutamate Concentration
subject: Online Monitoring
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Typical methods for monitoring cultivation processes are offline analyses like cell counting, measurement of various substrates and products (e. g. glucose or lactate) as well as the online monitoring of several physical process parameters (temperature, pH-value or the concentration of dissolved oxygen). To improve cell cultivations detailed information about important analytes should be available online. Therefore new monitoring methods need to be established, preferably as in-situ methods to minimize the risk of contamination. Two different in-situ online-methods were used to monitor cultivations: In-situ microscopy and 2D fluorescence spectroscopy. Therefore CHO-K1 cells (provided by University of Bielefeld) were cultivated in a complex culture medium (TC 42, TeutoCell, Bielefeld, Germany) using a 2.5 L stainless steel reactor with a work volume of 2 L. A total of three cultivation runs were conducted.
Some effectivity results for primitive divisors of elliptic divisibility sequences
Creators: name: Verzobio, Matteo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11B39, 11G05, 11G50

description: Let $P$ be a non-torsion point on an elliptic curve defined over a number field $K$ and consider the sequence $\{B_n\}_{n\in \mathbb{N}}$ of the denominators of $x(nP)$. We prove that every term of the sequence of the $B_n$ has a primitive divisor for $n$ greater than an effectively computable constant that we will explicitly compute. This constant will depend only on the model defining the curve.
description: Improved exposition and fixed minor issues. Final version of the paper
Luminescence-based characterization of crystalline silicon solar cells
Creators: name: Hinken, David
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Solar cell characterization
subject: luminescence imaging
subject: two-dimensional equivalent circuits
subject: Charakterisierung von Solarzellen
subject: ortsaufgelöste Lumineszenz
subject: zweidimensionale Ersatzschaltbilder
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Primitive divisors of elliptic divisibility sequences for elliptic curves with j=1728
Creators: name: Verzobio, Matteo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11G05, 11B39

description: Take a rational elliptic curve defined by the equation $y^2=x^3+ax$ in minimal form and consider the sequence $B_n$ of the denominators of the abscissas of the iterate of a non-torsion point; we show that $B_{5m}$ has a primitive divisor for every $m$. Then, we show how to generalize this method to the terms in the form $B_{mp}$ with $p$ a prime congruent to $1$ modulo $4$.
description: Final version of the paper. Published in Acta Arithmetica
Mathematical modelling and analysis of temperature effects in MEMS
Creators: name: Würth, Tim Oliver
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: temperature
subject: partial differential equations
subject: Micro-Electro-Mechanical Systems (MEMS)
subject: Temperatur
subject: partielle Differentialgleichungen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This thesis is concerned with the mathematical analysis of models for Micro-Electro-Mechanical Systems (MEMS). These models arise in the form of coupled partial differential equations with a moving boundary. Although MEMS devices are often operated in non-isothermal environments, temperature is usually neglected in the mathematical investigations. Therefore the focus of our modelling is to incorporate temperature and the related material properties. We derive two models, both of which focus on different aspects of the underlying physics. Afterwards we prove local well-posedness in time and also global well-posedness under additional assumptions on the model's parameters. Lastly, we provide some numerical results which exemplify how temperature and the model's material constants change the qualitative behaviour of the system.
Luminex xTAG detection of Cucumber mosaic virus (CMV) and different tospoviruses as well as further characterization of CMV with infectious full-length clones and pseudorecombinants
Creators: name: Bald-Blume, Niklas
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Luminex xTAG technology
subject: Cucumber mosaic virus
subject: tospoviruses
subject: Luminex xTAG Technologie
subject: Tospoviren
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]