gebhart/patrepeval huggingface dataset:
Formation postdoctorale en médecined’urgence : analyse des résultats d’une enquêtenationale auprès des apprenants (2003)

Contexte : L’évaluation des compétences professionnelles des futurs médecins appelés à exercer la médecine d’urgence en France est une exigence et un enjeu pédagogique. But : L’objectif de la recherche est de recueillir l’opinion des médecins sur leurs performances à l’issue de la capacité de médecine d’urgence : enseignement national d’une durée de deux ans. Méthode : L’avis des médecins titulaires du diplôme est recueilli à partir d’une enquête nationale de satisfaction, portant sur cinq années d’enseignement entre 1994 et 1999. Résultats : 520 médecins ont répondu au questionnaire. Les résultats mettent en évidence la nécessité et l’intérêt d’une formation postdoctorale en médecine d’urgence, les faiblesses de l’apprentissage et les contraintes organisationnelles. Conclusion : Les résultats plaident pour la création d’un nouveau curriculum en formation initiale et la création d’une spécialité de médecine d’urgence.
Ni0.5Cu0.5Co2O4 Nanocomposites, Morphology, Controlled Synthesis, and Catalytic Performance in the Hydrolysis of Ammonia Borane for Hydrogen Production (2019)

The catalytic hydrolysis of ammonia borane (AB) is a promising route to produce hydrogen for mobile hydrogen‒oxygen fuel cells. In this study, we have successfully synthesized a variety of Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> nanocomposites with different morphology, including nanoplatelets, nanoparticles, and urchin-like microspheres. The catalytic performance of those Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> composites in AB hydrolysis is investigated. The Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> nanoplatelets show the best catalytic performance despite having the smallest specific surface area, with a turnover frequency (TOF) of 80.2 mol<sub>hydrogen</sub>·min<sup>-1</sup>·mol<sup>-1</sup><sub>cat</sub>. The results reveal that, in contrast to the Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> nanoparticles and microspheres, the Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> nanoplatelets are more readily reduced, leading to the fast formation of active species for AB hydrolysis. These findings provide some insight into the design of high-performance oxide-based catalysts for AB hydrolysis. Considering their low cost and high catalytic activity, Ni<sub>0.5</sub>Cu<sub>0.5</sub>Co<sub>2</sub>O<sub>4</sub> nanoplatelets are a strong candidate catalyst for the production of hydrogen through AB hydrolysis in practical applications.
Purification and Characterization of OmcZ, an Outer-Surface, Octaheme c -Type Cytochrome Essential for Optimal Current Production by Geobacter sulfurreducens (2010)

Previous studies have demonstrated that Geobacter sulfurreducens requires the c-type cytochrome OmcZ, which is present in large (OmcZ(L); 50-kDa) and small (OmcZ(S); 30-kDa) forms, for optimal current production in microbial fuel cells. This protein was further characterized to aid in understanding its role in current production. Subcellular-localization studies suggested that OmcZ(S) was the predominant extracellular form of OmcZ. N- and C-terminal amino acid sequence analysis of purified OmcZ(S) and molecular weight measurements indicated that OmcZ(S) is a cleaved product of OmcZ(L) retaining all 8 hemes, including 1 heme with the unusual c-type heme-binding motif CX(14)CH. The purified OmcZ(S) was remarkably thermally stable (thermal-denaturing temperature, 94.2 degrees C). Redox titration analysis revealed that the midpoint reduction potential of OmcZ(S) is approximately -220 mV (versus the standard hydrogen electrode [SHE]) with nonequivalent heme groups that cover a large reduction potential range (-420 to -60 mV). OmcZ(S) transferred electrons in vitro to a diversity of potential extracellular electron acceptors, such as Fe(III) citrate, U(VI), Cr(VI), Au(III), Mn(IV) oxide, and the humic substance analogue anthraquinone-2,6-disulfonate, but not Fe(III) oxide. The biochemical properties and extracellular localization of OmcZ suggest that it is well suited for promoting electron transfer in current-producing biofilms of G. sulfurreducens.
Pittsburgh research center program of research. A summary of research in progress during fiscal years 1995-1996 (1996)

Contents: Advanced Mining Systems; Control of Mine Drainage and Liquid Wastes; Solid Waste Management and Subsidence; Abandoned Mined Land Reclamation Research; and Publications.
Circuit models for mode conversion in clock signal distribution (2005)

Clock signal paths are often routed near other signal strips over a ground plane. These situations generate configurations of strips involving coupled microstrip sections interacting with non coupled microstrip sections, and generating transitions between coupled and uncoupled microstrip sections that heavily modify the propagations of both clock and information signals. These transitions usually cause a degradation of the signal integrity. The transitions generated by typical configurations of strips are: a microstrip-coupled microstrip tee and a coupled microstrip-microstrip cross. In this paper, rigorous circuit models for these transitions are presented and applied to the prediction of the behavior of a clock distribution near a signal path. The models presented are multimodal: they split the contribution of even (common) and odd (differential) signals (modes) into different ports, and allow the analysis of circuits that present different responses to either mode. The good agreement between circuit simulation and measurements validates the models
Enhancement of the piezoelectric coefficient in PVDF-TrFe/CoFe 2 O 4 nanocomposites through DC magnetic poling (2021)

In the last years flexible, low-cost, wearable, and innovative piezoelectric nanomaterials have attracted considerable interest regarding the development of energy harvesters and sensors. Among the piezoelectric materials, special attention has been paid to electroactive polymers such as poly(vinylidene fluoride) (PVDF) and its copolymer poly(vinylidene fluoride- co -trifluoroethylene) (PVDF-TrFe), which is one of the most extensively investigated piezoelectric polymers, due to the high β phase content resulting from specific curing or processing conditions. However, to obtain a high piezoelectric coefficient ( d 33 ) alignment of the β phase domains is needed, which is usually reached through applying a high electric field at moderate temperatures. This process, usually referred to as electrical poling, requires the deposition of contact electrodes on the sample surface and the use of high-voltage apparatus. In the present work, in order to overcome these constraints, we have produced, characterized, and studied a polymer nanocomposite consisting of CoFe 2 O 4 nanoparticles dispersed in PVDF-TrFe with enhancement of the β phase alignment through an applied DC magnetic field. The magnetic poling was demonstrated to be particularly effective, leading to a piezoelectric coefficient d 33 with values up to 39 pm/V. This type of poling does not need the use of a top electrode or of high magnetic fields (the maximum value of d 33 was obtained at 50 mT, using a current of 0.4 A) making the PVDF-TrFE/CoFe 2 O 4 nanocomposite suitable for the fabrication of highly efficient devices for energy harvesting and wearable sensors.
Real-world experience of pediatric patients treated with peanut (Arachis hypogaea) allergen powder-dnfp (2023)

PTAH was prescribed in demographically diverse patients with a wide range of peanut-specific immunoglobulin E levels. Treatment persistence with PTAH was high in this study population, with a small number of patients experiencing treatment modification.
Smart Sensor for Autonomous Noise Monitoring (SSAM) (2009)

This project involved the development of a cost-effective sensor for long-range wireless, autonomous traffic noise monitoring. The device is called the Smart Sensor For Autonomous noise Monitoring (SSAM). The SSAM system developed under this project includes ten prototype sensors that measure and report noise levels periodically (e.g., once per minute) to a prototype base station that may be located up to 1.2 miles away. The data reported by SSAM includes flat-weighted and A-weighted sound pressure levels as well as octave band measurements over the frequency range of 22 to 5657 Hz. The system performance is similar to a Type 1 microphone as demonstrated in laboratory calibration tests reported here. The SSAM system developed in this project has been used to measure highway noise barrier insertion loss. The low-cost design of SSAM as well as the ability to perform autonomous measurements provides a new cost-effective approach to noise monitoring.
L-carnitine ameliorates gentamicin-induced renal injury in rats (2002)

In rats receiving gentamicin, daily L-carnitine injections, particularly at 200 mg/kg/day, ameliorate the severity of renal cortical proximal tubular necrosis and maintain greater renal function.
Design and growth of multi-functional InAsP metamorphic buffers for mid-infrared quantum well lasers on InP (2019)

We present InAsP multi-functional metamorphic buffers (MFMBs) designed to enable mid-infrared Type-I InAs quantum well (QW) lasers on InP substrates. InAsxP1-x/InP MFMBs with x = 0.5–0.7 provide a versatile platform for Type-I InAs QW laser diodes in the mid-infrared regime by bridging the lattice mismatch between InAs and InP while simultaneously functioning as the bottom cladding layer for laser structures. Cross-sectional transmission electron microscopy shows that InAs multi-QWs can be grown as thick as 15 nm without forming misfit dislocations on an InAs0.7P0.3 buffer, enabling room-temperature photoluminescence at wavelengths &amp;gt;3 μm. We then compare the performance of lasers grown on InAsP MFMBs and show that the temperature dependence strongly depends on the energy band offset between the QW and the metamorphic InAsP waveguides. Future work could improve performance at longer wavelengths by investigating the use of electron blocking layers and adjusting the device design to minimize parasitic heating.
Is the host range ofAlternaria daucirestricted to carrot? (2017)

International audience
Using preformed nitrate to infer decadal changes in DOM remineralization in the subtropical North Pacific (2005)

The preformed nitrate distribution throughout the subtropical North Pacific is characterized by a negative anomaly between 100 m and the 25.4 σ θ surface. Its presence indicates that nitrogen remineralization in the upper thermocline deviates significantly from Redfield stoichiometry. It has been previously suggested that this feature is created during the degradation of nitrogen‐poor dissolved organic matter (DOM) ( Emerson and Hayward , 1995 ). Here we present evidence from two transects in the eastern subtropical North Pacific that degradation of DOM with a high C:N ratio is quantitatively responsible for negative preformed nitrate. We develop a simple isopycnal mass balance to determine preformed nitrate using apparent oxygen utilization (AOU), dissolved organic carbon (DOC), and dissolved organic nitrogen (DON) data. These results agree well with the traditional preformed nitrate calculation and indicate that the intensity of the anomaly is proportional to the magnitude of DOM remineralization and its C:N remineralization ratio. An analysis of preformed nitrate distributions in the eastern subtropical North Pacific between 1980 and 1997 reveals a significant increase in the negative anomaly. While a portion of this change may be attributable to a reduction in ventilation of the gyre, the majority of the signal is due to an increase in the magnitude and/or C:N ratio of DOM remineralization. This conclusion supports recent hypotheses that DOM production and cycling may have increased in this region in the past 2 decades as a result of changes in the phytoplankton community structure.
Subpopulations of Slowly Cycling Cells In S and G2 Phase In Mouse Epidermis (1984)

Evidence has been presented supporting the existence of heterogeneity in cell-cycle progression in mouse epidermis, The present study was undertaken to characterize this heterogeneity in more detail. Hairless mice were continuously labelled with tritiated thymidine every 4 hr for 4 days. Basal cell suspensions were prepared from slices of mouse skin at intervals during the experiment and subjected to DNA flow cytometry. Cell-cycle analysis was combined with sorting of cells from windows in G1, S and G2 phase, and the proportion of labelled cells within each window was determined in autoradiographs. Reanalysis and resorting to control the purity of of sorted fractions were performed. Computer simulations of the data were made using a mathematical model assuming different S and G2 phase characteristics. A good fit to the data was only obtained when heterogeneity in mouse epidermal cell-cycle progression was assumed, indicating the existence of slowly traversing, distinct subpopulations of cells in G2 and S phase. These cells are assumed to contribute to about 40% of all cells in S phase and to about 70% of all in G2 phase. The estimated residence times in the resting states were 38 and 32 hr in S and G2 phase, respectively. Two-parameter sorting based on DNA and light scatter indicated that slowly cycling cells were larger than the average. There is no evidence of significant subpopulations of permanently non-proliferating keratinocytes in any of the cell-cycle phases.
Optical channel waveguides in silicon diffused from GeSi alloy (1989)

A technique for fabricating low-loss and polarisationindependent channel waveguides in silicon is reported. The waveguides are obtained by Ge-indiffusion using either a GeSi alloy or a system of alternating Ge and Si layers. Typical fabrication parameters for single-mode waveguides are given.
Compressive rheology of colloidal gels of anisotropic caly particles (2005)

The mechanisms whereby Laponite, a synthetic clay of the hectorite type, is consolidated, have been identified. This relatively monodisperse clay consists of disc-like anisotropic particles of nanometric size which have strongly anisotropic surface charges as the edges have a positive charge and the faces a negative one. These colloidal particles aggregate to form, depending on the physicochemical parameters, an isotropic gel. In this study, the inter-particle interactions may be modified by adding a peptizer, tetrasodium diphosphate. This peptizer consists of anions that attach themselves to the edges of the clay particles and tend to give them a negative surface charge. A large amount of literature is available on this clay, concerning restricted ranges of volume fractions in the dilute to semi-dilute domains, i.e., less than 3%. These studies was concerned by the influence of inter-particles interactions via the aqueous media on the physicochemical properties, on the structure of the dispersions and at larger length scales on their macroscopic behaviour. Other scarcer studies have considered consolidation as a way to concentrate the dispersions because they cannot be concentrated further using normal mixing techniques. These studies do not try to rely the structure and the macroscopic behaviour of the dispersions during and after consolidation.
The type I rat fatty acid synthase ACP shows structural homology and analogous biochemical properties to type II ACPs (2003)

While X-ray and NMR structures are now available for most components of the Type II fatty acid synthase (FAS), there are no structures for Type I FAS domains. A region from the mammalian (rat) FAS, including the putative acyl carrier protein (ACP), has been cloned and over-expressed. Here we report multinuclear, multidimensional NMR studies which show that this isolated ACP domain contains four alpha-helices (residues 8-16 [1]; 41-51 [2]; 58-63 [3] and 66-74 [4]) and an overall global fold characteristic of ACPs from both Type II FAS and polyketide synthases (PKSs). The overall length of the structured ACP domain (67 residues) is smaller than the structured regions of the Eschericia coli FAS ACP (75 residues), the actinorhodin PKS ACP (78 residues) and the Bacillus subtilis FAS ACP (76 residues). We further show that the rat FAS ACP is recognised as an efficient substrate by enzymes known to modify Type II ACPs including phosphopantetheinyl and malonyl transferases, but not by the heterologous S. coelicolor minimal polyketide synthase.
Chirality of the gamma lactones produced by Sporidiobolus salmonicolor grow in two different media (1997)

International audience
Vinylidene Cyanide. II. The Synthesis from 4,4-Dicyanocyclohexene (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTVinylidene Cyanide. II. The Synthesis from 4,4-DicyanocyclohexeneA. E. Ardis, S. J. Averill, H. Gilbert, F. F. Miller, R. F. Schmidt, F. D. Stewart, and H. L. TrumbullCite this: J. Am. Chem. Soc. 1950, 72, 7, 3127–3128Publication Date (Print):July 1, 1950Publication History Published online1 May 2002Published inissue 1 July 1950https://pubs.acs.org/doi/10.1021/ja01163a088https://doi.org/10.1021/ja01163a088research-articleACS PublicationsRequest reuse permissionsArticle Views92Altmetric-Citations5LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Numerical simulation of ultrasonic waves in cavitating fluids with special consideration of ultrasonic cleaning (2006)

In ultrasonic cleaning one of the main cleaning mechanisms is the cavitation which is induced by high-intensity sound fields. To further develop ultrasonic cleaning and to be able to make predictions about the results one has to consider the propagation of the ultrasound waves as well as the cavitation. In this paper a numerical model is presented to calculate the ultrasound propagation in a cavitating fluid. The model is based on a two-phase continuum approach. Contrary to most cavitation models, a finite element approach is used to solve these equations. The extensive computational effort of simulating the whole transient response of the standing waves forming in ultrasonic cleaning systems is circumvent by a two-step procedure combining a harmonic and a transient computation. Numerical simulations will be compared with experiments, which investigated, in addition to the pressure, the erosion and cleaning activity of cavitating water. The correlation between the simulated cavitation activity and the cleaning results will be discussed.
Noninvasive Carotid Imaging (2004)

The management of carotid stenosis has been based on major prospective trials that have used arteriography. However, noninvasive methods of evaluation have been sought because angiography has a significant risk of major complications and a high cost. Availability, low cost, and high diagnostic accuracy make duplex ultrasound the first line of investigation when carotid disease is suspected. Duplex ultrasound is limited by operator and machine variability. Magnetic resonance angiography in coordination with duplex ultrasound has increased accuracy and should be done after an equivocal or inadequate duplex ultrasound exam. Magnetic resonance angiography accuracy has improved with the use of contrast and three-dimensional time-of-flight techniques over a two-dimensional time-of-flight method. Computed tomographic angiography can also validate the duplex ultrasound exam and give additional information for the arch and intracranial vessels. Axial reconstruction has shown the greatest accuracy. Future studies defining the prognosis of area stenosis, plaque volume, and composition will further improve treatment that is based on noninvasive imaging.
Next generation biomarkers for brain injury (2013)

In perinatal medicine, there is an emerging interest on the potential usefulness of non-invasive brain biochemical monitoring in infants at risk for brain injury. To date, several biomarkers such as neuro-proteins, calcium binding proteins, oxidative stress markers, vasoactive agents, inflammatory mediators, have been investigated. Results showed that hypoxia insult, under different conditions, triggers a biochemical pathophysiological cascade of events leading to brain damage. In this setting, increased biomarkers concentrations in different biological fluids have been found to correlate with the occurrence of brain damage at short-long term both in preterm and term fetuses/newborns. However, before inclusion of any biomarker in guidelines, USA and European institutions have recently stated a panel of criteria that have to be fulfilled. Therefore, the present review offers an overview of the main biomarkers currently studied in perinatal medicine and their progresses according to institutions' criteria.
Recording the time of day. (1985)

The recording of the time-of-day (TOD) information (e.g., hours, minutes, and seconds) is an important part of a prolonged EEG and video study. The transcribing techniques for this information on paper (chart recorders), video tape, analog tape, and by digital computers are reviewed.
Indoor Localization Using 802.11 Time Differences of Arrival (2015)

This paper proposes a novel time-based method for determining the position of an IEEE 802.11g transmitter using multiple mutually synchronized 802.11g receivers. By means of baseband signal processing, the proposed algorithm obtains a high-resolution estimate of the time of arrival (TOA) of the long training sequence symbol at each receiver. An estimate of the position of the transmitter is obtained based on the estimation of the time differences of arrival (TDOA) of the symbols and the known fixed locations of the receivers. This paper investigates the effects of carrier and sampling clock offsets, in both frequency and phase, between nodes on the TOA and TDOA estimation error. In real-world experiments in a line of sight, low multipath indoor environment, the method was found to achieve mean errors of 42 cm per symbol for 1-D and 1.39 m per symbol for 2-D position estimation, for ranges of up to 25 m.
Novel Biohybrid Materials by Electrospinning: Nanofibers of Poly(ethylene oxide) and Living Bacteria (2007)

Poly(ethylene oxide) (PEO) fibers with living bacteria were obtained by electrospinning of aqueous dispersions of E. coli and Microccus luteus bacteria with PEO. E. coli as well as Micrococcus luteus bacteria survived electrospinning process. However, E. coli did not survive dry storage in PEO nonwovens at 20 °C for more than one hour. In contrast, Micrococcus luteus survived at least 250 h dry storage at 20 °C in eletrospun PEO nonwovens.