gebhart/patrepeval huggingface dataset:
Genomic insights into the virulence and salt tolerance of Staphylococcus equorum (2017)

To shed light on the genetic background behind the virulence and salt tolerance of Staphylococcus equorum, we performed comparative genome analysis of six S. equorum strains. Data on four previously published genome sequences were obtained from the NCBI database, while those on strain KM1031 displaying resistance to multiple antibiotics and strain C2014 causing haemolysis were determined in this study. Examination of the pan-genome of five of the six S. equorum strains showed that the conserved core genome retained the genes for general physiological processes and survival of the species. In this comparative genomic analysis, the factors that distinguish the strains from each other, including acquired genomic factors in mobile elements, were identified. Additionally, the high salt tolerance of strains enabling growth at a NaCl concentration of 25% (w/v) was attributed to the genes encoding potassium voltage-gated channels. Among the six strains, KS1039 does not possess any of the functional virulence determinants expressed in the other strains.
Performance Analysis of TLS for Quantum Robust Cryptography on a Constrained Device (2019)

Advances in quantum computing make Shor's algorithm for factorising numbers ever more tractable. This threatens the security of any cryptographic system which often relies on the difficulty of factorisation. It also threatens methods based on discrete logarithms, such as with the Diffie-Hellman key exchange method. For a cryptographic system to remain secure against a quantum adversary, we need to build methods based on a hard mathematical problem, which are not susceptible to Shor's algorithm and which create Post Quantum Cryptography (PQC). While high-powered computing devices may be able to run these new methods, we need to investigate how well these methods run on limited powered devices. This paper outlines an evaluation framework for PQC within constrained devices, and contributes to the area by providing benchmarks of the front-running algorithms on a popular single-board low-power device.
Synthese von Aminosäure‐alkenylestern (1974)

Abstract Synthese und Eigenschaften der Aminosäure‐alkenylester 1 – 7 werden beschrieben. Die Darstellung der Vinylester 1 – 6 erfolgt durch Austausch mit Vinylacetat unter Natriumtetrachloropalladat(II)‐Katalyse. Allylester werden durch Veresterung der N ‐geschützten Aminosäure mit Allylakohol dargestellt. Die Ausbeuten liegen zwischen 60 und 90%.
Diphosphine-Protected Au22 Nanoclusters on Oxide Supports Are Active for Gas-Phase Catalysis without Ligand Removal (2016)

Investigation of atomically precise Au nanoclusters provides a route to understand the roles of coordination, size, and ligand effects on Au catalysis. Herein, we explored the catalytic behavior of a newly synthesized Au<sub>22</sub>(L<sup>8</sup>)<sub>6</sub> nanocluster (L = 1,8-bis(diphenylphosphino) octane) with in situ uncoordinated Au sites supported on TiO<sub>2</sub>, CeO<sub>2</sub>, and Al<sub>2</sub>O<sub>3</sub>. Stability of the supported Au<sub>22</sub> nanoclusters was probed structurally by in situ extended X-ray absorption fine structure (EXAFS) and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and their ability to adsorb and oxidize CO was investigated by IR absorption spectroscopy and a temperature-programmed flow reaction. Low-temperature CO oxidation activity was observed for the supported pristine Au<sub>22</sub>(L<sup>8</sup>)<sub>6</sub> nanoclusters without ligand removal. Density functional theory (DFT) calculations confirmed that the eight uncoordinated Au sites in the intact Au<sub>22</sub>(L<sup>8</sup>)<sub>6</sub> nanoclusters can chemisorb both CO and O<sub>2</sub>. Use of isotopically labeled O<sub>2</sub> demonstrated that the reaction pathway occurs mainly through a redox mechanism, consistent with the observed support-dependent activity trend of CeO<sub>2</sub> > TiO<sub>2</sub> > Al<sub>2</sub>O<sub>3</sub>. We conclude that the uncoordinated Au sites in the intact Au<sub>22</sub>(L<sup>8</sup>)<sub>6</sub> nanoclusters are capable of adsorbing CO, activating O<sub>2</sub>, and catalyzing CO oxidation reaction. This work is the first clear demonstration of a ligand-protected intact Au nanocluster that is active for gas-phase catalysis without the need of ligand removal.
Méthodologie de conception d'un simulateur vidéo laparoscopique. De l'analyse des connaissances á la création des parcours d'apprentissage : Le cas de la chirurgie aortique (2009)

International audience
Active heat exchange system development for latent heat thermal energy storage (1979)

The report describes active heat exchange concepts for use with thermal energy storage systems in the temperature range of 250/sup 0/C to 350/sup 0/C, using the heat of fusion of molten salts for storing thermal energy. It identifies over 25 novel techniques for active heat exchange thermal energy storage systems. Salt mixtures that freeze and melt in appropriate ranges are identified and are evaluated for physico-chemical, economic, corrosive and safety characteristics. Eight active heat exchange concepts for heat transfer during solidification are conceived and conceptually designed for use with selected storage media. The concepts are analyzed for their scalability, maintenance, safety, technological development and costs. A model for estimating and scaling storage system costs is developed and is used for economic evaluation of salt mixtures and heat exchange concepts for a large scale application. The importance of comparing salts and heat exchange concepts on a total system cost basis, rather than the component cost basis alone, is pointed out. Comparison of these costs with current state-of-the-art systems should be avoided due to significant differences in developmental status. The heat exchange concepts were sized and compared for 6.5 MPa/281/sup 0/C steam conditions and a 1000 MW(t) heat rate for six hours. A cost sensitivity analysis for other design conditions is also carried out. The study resulted in the selection of a shell and coated-tube heat exchanger concept and a direct contact-reflux boiler heat exchange concept. For the storage medium, a dilute eutectic mixture of 99 wt % NaNO/sub 3/ and 1 wt % NaOH is selected for use in experimenting with the selected heat exchanger concepts in subsequent tasks.
Light and color in the open air: Introduction to the feature issue (2015)

This is a feature issue devoted to optical phenomena in nature. Many of the papers published in this feature issue are based on presentations given at the "Light & Color in Nature" conference held in August 2013 at the University of Alaska-Fairbanks.
The Economic Value of Wetland Conservation and Creation: A Meta-Analysis (2008)

The rationale for conservation and creation of wetlands stems from the recognition of both their ecological and economic values. This paper examines the welfare impacts of goods and services provided by wetlands. We collected 385 estimates of the economic value of 181 natural and man-made wetlands from 167 studies worldwide. The resulting database is less biased towards North America than previous reviews of the literature. The relative importance of characteristics of the valuation study, of the wetland site, and of the socio-economic and geographical context is estimated by means of a meta-regression analysis of wetland values. Provision of amenities, flood control and storm buffering, and water quality improvement are the most highly valued wetland services. The relevance of the socio-economic and geographical context clearly emerges from the analysis and, in particular, the proximity to other wetland sites is negatively correlated with valuations. An analysis of the effect of environmental stress on wetland value shows that the latter increases with stress from human development activities and uses. In addition to the basic meta-regression model, the influence of authorship effects and of the geographic regions is examined by means of a multi-level approach. A second extended meta-regression model including cross-effects shows that the valuations of specific services vary according to the type of wetland producing them.
Experimental and numerical investigation of composite conical shells' stability subjected to dynamic loading (2014)

In this article, stability of composite conical shells subjected to dynamic external pressure is investigated by numerical and experimental methods. In experimental tests, cross-ply glass woven fabrics were selected for manufacturing of specimens. Hand-layup method was employed for fabricating the glass-epoxy composite shells. A test-setup that includes pressure vessel and data acquisition system was designed. Also, numerical analyses are performed. In these analyses, effect of actual geometrical imperfections of experimental specimens on the numerical results is investigated. For introducing the imperfections to the numerical models, linear eigen-value buckling analyses were employed. The buckling modes are multiplied by very small numbers that are derived from measurement of actual specimens. Finally, results are compared together while a good agreement between results of imperfect numerical analyses and experimental tests is observed.
Low frequency attenuation of acoustic waves in a perforated pipe (2023)

This paper presents new experimental and numerical evidence that perforations in a pipe wall result in a low-frequency bandgap within which sound waves rapidly attenuate. These perforations are modelled as an acoustically soft boundary condition on the pipe wall and show that a low frequency bandgap is created from 0 Hz. The upper bound of this bandgap is determined by the dimensions and separation of the perforations. An analytical model based on the transfer matrix method is proposed. This model is validated against numerical predictions for the pipe with varying perforation geometries. A numerical study is undertaken to model the effect of perforations with ideal acoustically soft boundary conditions and surrounded with an air gap. Close agreement is found between the numerical and analytical models. Experimental evidence shows that the width of the bandgap is accurately predicted with the numerical and analytical models.
Lattice dynamics of LaSb and PrSb (1978)

The acoustical-phonon dispersion relations of LaSb and PrSb have been measured along [$00\ensuremath{\zeta}$] and [$\ensuremath{\zeta}\ensuremath{\zeta}0$], and they are compared with those of NdSb. No evidence for exciton-phonon interactions is found.
Effects of etching time on the bottom surface morphology of ultrathin porous alumina membranes for use as masks (2012)

We investigated the effect of etching time on the bottom surface morphologies of ultrathin porous alumina membranes (UT-PAMs) anodized in oxalic and phosphoric acid. The morphology of the bottom surface clearly changed and a unique surface undulation was observed during the etching process. Such an undulation regarding the bottom surface is attributed to the different etching rates between the dome-shaped barrier layer and the hexagonal cell walls. The results suggest that the bottom morphology of UT-PAMs formed after the barrier layer is opened significantly affects the contact area of the bottom side with the substrate. During the initial stage of the opening process for the barrier layer, the porous section will contact the substrate rather than the walls. However, as the etching time increases, the height of the porous section becomes considerably lower than that of the walls, which means that the walls will contact the substrate with a gap between the pores and the substrate. Based on our experimental results, we propose a possible schematic diagram describing the effects of UT-PAMs with differently-shaped bottom surfaces on the shapes of fabricated nanodots when the UT-PAMs are used as masks.
The upper consolute boundary in zwitterionic surfactant-water systems (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe upper consolute boundary in zwitterionic surfactant-water systemsPer Gunnar Nilsson, Bjoern Lindman, and Robert G. LaughlinCite this: J. Phys. Chem. 1984, 88, 25, 6357–6362Publication Date (Print):December 1, 1984Publication History Published online1 May 2002Published inissue 1 December 1984https://pubs.acs.org/doi/10.1021/j150669a061https://doi.org/10.1021/j150669a061research-articleACS PublicationsRequest reuse permissionsArticle Views288Altmetric-Citations34LEARN 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 options Get e-Alerts
Portable Gas Analyzer Based on Fourier Transform Infrared Spectrometer for Patrolling and Examining Gas Exhaust (2015)

Aimed at monitoring emission of organic gases such as CH 4 , C 2 H 6 , C 3 H 8 , iso-C 4 H 10 , n-C 4 H 10 , C 2 H 4 , C 3 H 6 , C 2 H 2 , CO, and CO 2 , from coal mines, petroleum refineries, and other plants, a Fourier Transform Infrared (FT-IR) spectrometer was used to develop a portable gas analyzer for patrolling and examining gas exhaust. Firstly, structure of the instrument was introduced. Then, a spectral analysis approach was presented. Finally, instrument was tested with standard gases and with actual gases emitted from a petroleum refinery. For the latter test, a gas chromatograph (GC) was used as a reference instrument. The test results showed that the detection limit of every component of analyte was less than 10 × 10 −6 . The maximum test error of every analyte was less than 15 × 10 −6 when its practical concentration was no more than 500 × 10 −6 . A final comparison showed that the result curves of analytes obtained with FT-IR spectrometer almost overlapped with those obtained with GC, and their resulting noise was less than 6.4% when the practical gas concentration was above 100 × 10 −6 . As a result, our instrument was suitable to be used as a portable instrument for monitoring exhaust gases.
Correlations of radiographic analysis of healing fractures with strength: A statistical analysis of experimental osteotomies (1985)

The assessment of fracture healing strength using routine roentgenograms is difficult and controversial. There are few experimental data that correlate radiographic appearance with the actual quantitative strength of healing fractures. However, this method is widely used in clinical practice. A study is presented in which transversely osteotomized rabbit tibiae were allowed to heal for 3 to 8 weeks. A pair of orthogonal roentgenograms was taken of each bone and the bones were tested for strength in a dynamic torsion testing machine. Statistical analyses were done to study the correlations between the roentgenographic and strength parameters. Cortical continuity was found to be the best single predictor of strength of a healing fracture (correlation coefficient r = 0.80). The least important predictor was the callus area (r = 0.17). Fracture displacement, callus thickness, and callus diameter had negative correlations. From these experimental findings in an animal model, we conclude that even under laboratory conditions the information gained from plain radiographs is not sufficient to accurately predict the strength of a healing fracture.
Low cost lab-on-a-chip prototyping with a consumer grade 3D printer (2014)

Versatile prototyping of 3D printed lab-on-a-chip devices, supporting different forms of sample delivery, transport, functionalization and readout, is demonstrated with a consumer grade printer, which centralizes all critical fabrication tasks. Devices cost 0.57US$ and are demonstrated in chemical sensing and micromixing examples, which exploit established principles from reference technologies.
Remeron Tablet Strengths Easy to Confuse Safety Alert: Versed Syrup Reducing Errors with IV Insulin (1999)

These medication errors have occurred in health care facilities at least once. They will happen again–perhaps where you work. Through education and alertness of personnel and procedural safeguards, they can be avoided. You should consider publishing accounts of errors in your newsletters and/or presenting them in your inservice training programs. Your assistance is required to continue this feature. The reports described here were received through the USP Medication Errors Reporting Program, which is presented in cooperation with the Institute of Safe Medication Practices. If you have encountered medication errors and would like to report them, you may call USP tool-free, 24 hours a day, at 1-800-233-7767 (1-800-23-ERROR). Any reports published by ISMP will be anonymous. Comments are also invited; the writer's names will be published if desired. ISMP may be contacted at the address shown below.
Synovial T lymphocyte recognition of organisms that trigger reactive arthritis. (1989)

Reactive arthritis (ReA) is believed to be "triggered' by infection with certain bacteria. When the proliferative responses of mononuclear cells (MC) obtained from the synovial fluid (SF) of ReA patients were examined, it was found that they responded maximally to the specific organism responsible for the preceding infection. The response was shown to be due to Class II MHC-restricted T cells by inhibition experiments using cyclosporin A and monoclonal antibodies. Significant SFMC responses to additional organisms associated with ReA were also recorded; since there was no serological evidence of preceding infection by these organisms, this finding suggests that these bacteria share common T cell-recognized antigenic epitopes. The corresponding responses by peripheral blood mononuclear cells (PBMC) were much lower and often barely detectable, whereas their responses to PHA were consistently higher than those of SFMC. These results, combined with evidence that bacterial antigens localize in the joint, indicate that a bacteria-specific, T-cell-mediated response may play a central role in the pathogenesis of ReA.
A Comparison of Decision Analysis and Expert Rules for Sequential Diagnosis (2013)

There has long been debate about the relative merits of decision theoretic methods and heuristic rule-based approaches for reasoning under uncertainty. We report an experimental comparison of the performance of the two approaches to troubleshooting, specifically to test selection for fault diagnosis. We use as experimental testbed the problem of diagnosing motorcycle engines. The first approach employs heuristic test selection rules obtained from expert mechanics. We compare it with the optimal decision analytic algorithm for test selection which employs estimated component failure probabilities and test costs. The decision analytic algorithm was found to reduce the expected cost (i.e. time) to arrive at a diagnosis by an average of 14% relative to the expert rules. Sensitivity analysis shows the results are quite robust to inaccuracy in the probability and cost estimates. This difference suggests some interesting implications for knowledge acquisition.
Rauhigkeit und Durchmischung der Grenzflächen in laserdeponierten Cu-Ag- und Fe-Ag-Schichtsystemen (2002)

Due to the high kinetic energy of the ions that are produced during pulsed laser deposition, thin films prepared by this method show a number of marked differences when compared to films prepared by more traditional techniques. This thesis deals mainly with the influence of implantation and resputtering of the surface by the impinging fast ions on film growth as well as the roughness and intermixing of the interfaces in the de-mixing systems Cu-Ag and Fe-Ag. In-situ Auger electron spectroscopy was utilized to study the evolution of the surface concentration during growth, which yields information on the mixing of the interfaces when compared to a numerical model of film growth through implantation. A strongly asymmetrical variation of the concentration across the interface is found. The width of the interface is on the order of a few nanometers and depends on the deposited element, as is shown by small angle x-ray scattering. In the Cu-Ag system, the contribution of roughness and intermixing to the interface width could be distinguished by this technique, while in the case of Fe-Ag, conversion electron Moessbauer spectroscopy was used to study the intermixed zone directly. It is shown that when Fe is deposited on Ag, a sharp interface is formed, whereas in the case of Ag deposition on Fe, an intermixed layer of up to 1.5nm thickness develops. The mechanisms underlying these differences are discussed on the basis of implantation of the fast ions and their resputtering of the surface.
Increased renal endothelin production in rats with reduced renal mass (1991)

Renal endothelin (ET) production was investigated in rats after renal mass ablation, a model of progressive renal disease characterized by glomerular hemodynamic alterations and capillary thrombosis, and in sham-operated animals. Thrombin stimulation of renal cortical tissue from rats with renal mass reduction, 45 but not 7 days after surgery, generated significantly (P less than 0.01) more ET than tissue from sham-operated animals. Exposure to thrombin of isolated glomeruli from remnant but not sham kidneys also significantly (P less than 0.01) increased ET production compared with unstimulated glomeruli. At day 45, in rats with renal mass ablation ET plasma levels were numerically lower, whereas urinary excretion rate of ET was significantly (P less than 0.01) increased compared with sham-operated animals. After a 50-min intravenous infusion of 125I-ET to normal rats and animals with renal mass ablation, less than 0.3% and 0.03%, respectively, of total infused radioactivity was recovered in urine. These results indicate that thrombin-stimulated ET production by renal cortical tissues is increased in rats with renal mass reduction. Despite normal or low-normal plasma ET levels, urinary excretion of the peptide is markedly increased in this model. The exogenously labeled ET added to circulation is not excreted by the kidney, suggesting that enhanced urinary excretion rate would reflect an increased renal production of the peptide in rats with remnant kidney.
ChemInform Abstract: “Pictet‐Spengler‐like” Synthesis of Tetrahydro‐β‐carbolines under Hydrolytic Conditions. Direct Use of Azalactones as Phenylacetaldehyde Equivalents. (1997)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.