gebhart/patrepeval huggingface dataset:
Recommended standards for biochemical markers of myocardial damage: All Wales Clinical Biochemistry Audit Group (2005)

The effective use of cardiac-specific troponin estimations in the diagnosis of acute myocardial infarction (AMI) is clouded by the imprecise definition surrounding the decision limits. This has led to a wide variation of criteria for the diagnosis of myocardial infarction. A survey of troponin measurements in Welsh laboratories, undertaken in 2003 under the auspices of the All Wales Clinical Biochemistry Audit Group, revealed significant variations in laboratory and clinical practice. Extensive discussion and consultation led by a working group of clinical biochemists and cardiologists in Wales culminated in recommendations concerning the use of troponin assays to establish myocardial damage. The key recommendations are: Cardiac troponin (T or I) should be the first-line test for myocardial damage; Two samples should be collected, at admission and 12-24 h later. The first sample is used for 'rule in' purposes, but not to 'rule out' myocardial damage; Only one threshold (cut-off) value for troponin should be quoted on laboratory reports, values above which are indicative of myocardial damage. A study by the Wales External Quality Assurance Scheme (WEQAS) enabled the derivation of the recommended cut-off concentrations of troponin for defining myocardial damage, defined for each assay as the concentration that can be reliably distinguished, with a confidence interval of 99%, from the 99th percentile reference limit. These recommended standards provide a rationale for a uniform approach for troponin assays for patients with chest pain, working towards a standardized approach to the diagnosis and management of patients presenting with acute coronary syndromes.
Evaluation of a trademark image retrieval system (1997)

This paper describes the evaluation of ARTISAN, a system designed to provide automatic retrieval of abstract trademark images by shape feature. The system depends for its operation on analyzing each image to characterize key shape components, grouping image regions into families which potentially mirror human image perception, and then deriving characteristic indexing features from these families. A variety of run-time search options is provided, allowing the user to select alternative sets of shape features and similarity matching paradigms. The system’s retrieval effectiveness has been evaluated by measuring its retrieval effectiveness using a set of 12 real queries with known results put to a collection of over 10 000 abstract geometric shapes from the UK Trade Marks Registry. Normalized recall and precision scores averaged 0.93 and 0.65 respectively. The results suggest strongly that the basic ARTISAN approach is valid, though the present version has significant limitations, particularly when handling badly-scanned images or images with implied shape features. Possible ways of overcoming these limitations are discussed.
Using Statistical Techniques to Predict Dynamic Arterial P <sub> CO <sub>2</sub> </sub> in Patients With COPD During Maximum Exercise (2012)

A validated mixed-model regression derived equation yields a predicted P(aCO(2)) trend during exercise that can be helpful when interpreting exercise testing to determine P(aCO(2)) - P(ETCO(2)) and exercise-induced hypercapnia.
Research and Development of Ceramic Turbine Wheels (1993)

The bending strength of specimens of various sizes, some of which were cut from a turbine wheel, was compared with predictions using Weibull statistical theory. The stress distribution of a ceramic turbine wheel in spin testing was determined with finite elements and the results were used to analyze a wheel that was spun until it burst. The cause of the burst of the ceramic radial turbine wheel at elevated temperature is discussed and based on the tensile rupture data. A design methodology using the Larson-Miller parameter was found to be applicable to the ceramic components at elevated temperatures.
Dynamics and rheology of wormlike micelles emerging from particulate computer simulations (2008)

We perform coarse-grained computer simulations of solutions of semidilute wormlike micelles and study their dynamic and rheological properties, both in equilibrium and under shear flow. The simulation model is tailored to the study of relatively large time and length scales (micrometers and several milliseconds), while it still retains the specific mechanical properties of the individual wormlike micelles. The majority of the mechanical properties (persistence length, diameter, and elastic modulus of a single worm) is determined from more detailed atomistic molecular dynamics simulations, providing the link with the chemistry of the surfactants. The method is applied to the case of a solution containing 8% (by weight) erucyl bis(hydroxymethyl)methylammonium chloride (EHAC). Different scission energies ranging from 15.5k(b)T to 19.1k(B)T are studied, leading to both unentangled and entangled wormlike micelles. We find a decrease in the average contour length and an increase in the average breaking rate with increasing shear rate. In equilibrium, the decay of the shear relaxation modulus of the unentangled samples agrees with predictions based on a theory of breakable Rouse chains. Under shear flow, transient over- and undershoots are measured in the stress tensor components. At high shear rates we observe a steady-state shear stress proportional to gamma(1/3), where gamma is the shear rate. This is confirmed by our high shear rate experiments of real EHAC in a parallel-plate geometry.
Accuracy in wrist-worn, sensor-based measurements of heart rate and energy expenditure in a diverse cohort (2016)

Abstract Background The ability to measure activity and physiology through wrist-worn devices provides an opportunity for cardiovascular medicine. However, the accuracy of commercial devices is largely unknown. Objective To assess the accuracy of seven commercially available wrist-worn devices in estimating heart rate (HR) and energy expenditure (EE) and to propose a wearable sensor evaluation framework. Methods We evaluated the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn, and Samsung Gear S2. Participants wore devices while being simultaneously assessed with continuous telemetry and indirect calorimetry while sitting, walking, running, and cycling. Sixty volunteers (29 male, 31 female, age 38 ± 11 years) of diverse age, height, weight, skin tone, and fitness level were selected. Error in HR and EE was computed for each subject/device/activity combination. Results Devices reported the lowest error for cycling and the highest for walking. Device error was higher for males,greater body mass index, darker skin tone, and walking. Six of the devices achieved a median error for HR below 5% during cycling. No device achieved an error in EE below 20 percent. The Apple Watch achieved the lowest overall error in both HR and EE, while the Samsung Gear S2 reported the highest. Conclusions Most wrist-worn devices adequately measure HR in laboratory-based activities, but poorly estimate EE, suggesting caution in the use of EE measurements as part of health improvement programs. We propose reference standards for the validation of consumer health devices ( http://precision.stanford.edu/ ). Abbreviations (EE) Energy expenditure (HR) Heart rate (GEE) General estimating equation
Managers' Perceived Benefits of Using Electronic Procurement in Taiwan (2015)

Facing the competitive pressure from new hospitals and new regulations from the Bureau of National Health Insurance, hospital managers in Taiwan are concentrating on reducing the hospital operation costs and improving the healthcare quality. Practitioners and academic researchers agree that reducing the pharmacy cost is one of the best solutions to sustain competitive advantage. As electronic commerce becomes popular in many industry sectors, e- procurement is growing rapidly in the healthcare industry. The purpose of this paper is to investigate the managers' perceptions of benefits of using electronic procurement system. After surveying 152 hospitals in Taiwan, we find that hospital size and adoption status have significant influence on many perceived benefits. Managers in large hospitals show stronger confidence in the perceived benefits of using e-procurement than their counterparts of small hospitals.
(Arylsulfonyl)acetones and -acetonitriles: New Activated Methylenic Building Blocks for Synthesis of 1,2,3-Triazoles (2009)

β-Keto sulfones and β-nitrile sulfones were used as building blocks for 1,2,3-triazole synthesis in the Dimroth cyclization. It was shown, that sulfone reagents undergo base-catalyzed cyclization under mild conditions (at room temperature) to give 1,2,3-triazoles in moderate to excellent yields. This fact has confirmed the high nucleophilicity of sulfonylmethylenic compounds and allows new synthetic applications.
A New Broadband Quasi Yagi–Uda Antenna With an EBG-Truncated Ground Plane (2013)

The design of a new broadband quasi Yagi-Uda antenna is presented. The antenna is composed of an electromagnetic band-gap (EBG)-truncated ground plane and a feeding network formed by a Marchand balun and a coupling network. The quasi Yagi-antenna was designed to work at a central frequency of 3.5 GHz using a 30-mil FR4 substrate. The simulated and measured results show a relative bandwidth better than 53%, a cross polarization lower than -19 dB in the main lobe, and a front-to-back ratio better than 12 dB in the entire bandwidth.
Shock wave compression of the ferroelectric ceramic Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3: Depoling currents (2004)

Shock wave compression of poled Pb0.99(Zr0.95Ti0.05)0.98Nb0.02O3 (PZT 95/5-2Nb) results in rapid depoling and release of bound charge. In the current study, planar-impact experiments with this material were conducted on a gas-gun facility to determine Hugoniot states, to examine constitutive mechanical properties during shock propagation, and to investigate shock-induced depoling characteristics. A previous article summarized results from the first two of these areas, and this article summarizes the depoling studies. A baseline material, similar to materials used in previous studies, was examined in detail. More limited experiments were conducted with other materials to investigate the effects of different porous microstructures. Experiments were conducted over a wide range of conditions in order to examine the effects of varying shock strength, poling orientation, input wave shape, electric field strength, porous microstructure at a fixed density, and initial density. Depoling currents were recorded in an external circuit under either short-circuit or high-field conditions, and provide a convenient means of examining the kinetics associated with the ferroelectric–to–antiferroelectric phase transition. For sufficiently strong shock waves, the measured short-circuit currents indicate that the phase transition is very rapid and essentially complete. As shock strengths are reduced, short-circuit currents show increasing rise times and decreasing final levels at the end of shock transit. These features indicate that the transition kinetics can be characterized in terms of both a transition rate and a limiting degree of transition achieved in a given shock experiment. The presence of a strong electric field does not appear to have a significant effect on transition kinetics at high shock stresses, but has a strong effect at low stresses. As was found for constitutive mechanical properties, only small effects on measured currents resulted from differences in the porous microstructure of common-density materials, but large effects were observed when initial density was varied. To examine transition kinetics in more detail, short-circuit currents obtained with the baseline material and several approximate methods were used to estimate values for the rate and degree of transition as functions of shock properties. Differences between these currents and currents measured in high-field experiments using the same impact conditions were used to examine field effects on transition kinetics and corresponding dielectric properties.
Prevention by Methionine of Dichloroacetic Acid-Induced Liver Cancer and DNA Hypomethylation in Mice (2003)

Dichloroacetic acid (DCA) is a liver carcinogen that induces DNA hypomethylation in mouse liver. To test the involvement of DNA hypomethylation in the carcinogenic activity of DCA, we determined the effect of methionine on both activities. Female B6C3F1 mice were administered 3.2 g/l DCA in their drinking water and 0, 4.0, and 8.0 g/kg methionine in their diet. Mice were sacrificed after 8 and 44 weeks of exposure. After 8 weeks of exposure, DCA increased the liver/body weight ratio and caused DNA hypomethylation, glycogen accumulation, and peroxisome proliferation. Methionine prevented completely the DNA hypomethylation, reduced by only 25% the glycogen accumulation, and did not alter the increased liver/body weight ratio and the proliferation of peroxisomes induced by DCA. After 44 weeks of exposure, DCA induced foci of altered hepatocytes and hepatocellular adenomas. The multiplicity of foci of altered hepatocytes/mouse was increased from 2.41 +/- 0.38 to 3.40 +/- 0.46 by 4.0 g/kg methionine and decreased to 0.94 +/- 0.24 by 8.0 g/kg methionine, suggesting that methionine slowed the progression of foci to tumors. The low and high concentrations of methionine reduced the multiplicity of liver tumors/mouse from 1.28 +/- 0.31 to 0.167 +/- 0.093 and 0.028 +/- 0.028 (i.e., by 87 and 98%, respectively). Thus, the prevention of liver tumors by methionine was associated with its prevention of DNA hypomethylation, indicating that DNA hypomethylation was critical for the carcinogenic activity of DCA.
The Structure of Flavocytochrome c Sulfide Dehydrogenase from a Purple Phototrophic Bacterium (1994)

The structure of the heterodimeric flavocytochrome c sulfide dehydrogenase from Chromatium vinosum was determined at a resolution of 2.53 angstroms. It contains a glutathione reductase-like flavin-binding subunit and a diheme cytochrome subunit. The diheme cytochrome folds as two domains, each resembling mitochondrial cytochrome c, and has an unusual interpropionic acid linkage joining the two heme groups in the interior of the subunit. The active site of the flavoprotein subunit contains a catalytically important disulfide bridge located above the pyrimidine portion of the flavin ring. A tryptophan, threonine, or tyrosine side chain may provide a partial conduit for electron transfer to one of the heme groups located 10 angstroms from the flavin.
Experiment on searching for electromagnetic wave sources by using a synthetic aperture technique (1987)

Abstract To control unwanted electromagnetic waves, it is important to estimate accurately the location of the electromagnetic source nearby. Based on the synthetic aperture technique and the signal processing algorithm of the spatial Fourier transform, the location of the source within a planar space of 10 wavelength square has been performed with an electromagnetic source model. It is confirmed experimentally that a satisfactory search of the source is possible using Mills' cross method. A parallel twin wire is used as the electromagnetic source model. Different types of discontinuities are placed along the transmission line and the electromagnetic wave is forced to radiate to create a source. In practice, 300 or 400 MHz is selected and 21 measurement points are selected along the x and y axes with each half‐wavelength spacing. The error of locating the measurement points is the cause of the wave source estimation error. It is demonstrated that the algorithm used here is rather insensitive to these errors.
Jitter and shimmer measurements for speaker recognition (2007)

Comunicacio presentada a: 8th Annual Conference of the International Speech Communication Association a Antwerp (Belgium) celebrada del 27 al 31 d'agost de 2007.
11-W single-frequency 532-nm radiation by second-harmonic generation of a miniature Nd:YAG ring laser (1996)

A compact and efficient source of cw single-frequency radiation at 532 nm with excellent long-term stability has been realized by external frequency doubling of a diode-pumped miniature Nd:YAG ring laser. With a semimonolithic MgO:LiNbO(3) resonator an optical-to-optical conversion efficiency of 89% from 1064 to 532 nm at an output power of 1.1 W was achieved, with a wall plug efficiency of 9%. This system represents an ideal pump source for narrow-linewidth cw optical parametric oscillators with good frequency stability.
Purification and structural properties of an extracellular (1-4)-.beta.-D-mannuronan-specific alginate lyase from a marine bacterium (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPurification and structural properties of an extracellular (1-4)-.beta.-D-mannuronan-specific alginate lyase from a marine bacteriumTony Romeo and James F. Preston, IIICite this: Biochemistry 1986, 25, 26, 8385–8391Publication Date (Print):December 1, 1986Publication History Published online1 May 2002Published inissue 1 December 1986https://pubs.acs.org/doi/10.1021/bi00374a009https://doi.org/10.1021/bi00374a009research-articleACS PublicationsRequest reuse permissionsArticle Views163Altmetric-Citations29LEARN 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
Analysis of spherical aberration of a water immersion objective: application to specimens with refractive indices 1.33–1.40 (2000)

The method of using immersion medium to correct spherical aberration for water immersion objectives when the samples are not water is investigated. Spherical aberration is measured by an interferometer converted from a confocal microscope for samples with different refractive indices. When the proper refractive index of the immersion medium and thickness of cover slip are selected, the measured spherical aberration approaches zero. A theoretical model can be used for prediction of the immersion medium to correct spherical aberration for various samples. Using the thinnest available cover slip (100 microm), the zero spherical aberration condition can be applied to samples with refractive index as high as 1.40. Confocal images in the condition of almost no spherical aberration are included to demonstrate the improvement of axial resolution due to this correction.
Implementing a Test Foundation Framework in LabVIEW (2002)

This paper describes an implementation of a Test Foundation Framework (TFF) as described in the draft IEEE-Std-1226-1993, A Broad Based Environment for Test (ABBET). The ABBET Object Model schema described in IS010303-11, EXPRESS-G language diagrams is compared to a TFF implementation expressed as LabVIEW G diagrams.
Produktgestaltung über mechanisches Agglomerieren von Pulvern (2015)

Abstract Feine Pulver stauben stark, weisen niedrige Schüttdichten auf und lassen sich schlecht handhaben. Daher sind Press‐ und Aufbauagglomeration zur Überführung trockener Pulver in besser handhabbare Agglomerate industriell breit genutzte Verfahren. Ein Agglomerat besteht aus vielen, über kurze Materialbrücken miteinander verbundenen Partikeln. In der Pressagglomeration bilden die hochviskosen, plastischen Phasen den Kit zwischen den Partikeln, während in der Aufbauagglomeration die Materialbrücken durch das gelöste Bindemittel während der Trocknung entstehen. Die Auswahl geeigneter Bindemittel, die Durchführung von Scale‐up‐fähigen Pilotversuchen sowie die industrielle Ausführung von Anlagen der Pressagglomeration und der Granulation werden erläutert.
Dynamical matter-parity breaking and gravitino dark matter (2010)

Scenarios where gravitinos with GeV masses makeup dark matter are known to be in tension with high reheating temperatures, as required by e.g. thermal leptogenesis. This tension comes from the longevity of the NLSPs (next-to-lightest supersymmetric particle), which can destroy the successful predictions of the standard primordial nucleosynthesis. However, a small violation of matter parity can open new decay channels for the NLSP, avoiding the BBN (standard primordial nucleosynthesis) problems, while being compatible with experimental cosmic-ray constraints. In this paper, we propose a model where matter parity, which we assume to be embedded in the $\mathrm{U}(1{)}_{B\ensuremath{-}L}$ gauge symmetry, is broken dynamically in a hidden sector at low-scales. This can naturally explain the smallness of the matter parity breaking in the visible sector. We discuss the dynamics of the corresponding pseudo Nambu-Goldstone modes of $B\ensuremath{-}L$ breaking in the hidden sector, and we comment on typical cosmic-ray and collider signatures in our model.
Hybrid volume beamforming for 3-D ultrasound imaging using 2-D CMUT arrays (2012)

In real-time 3-D (4-D) ultrasound imaging using 2-D array transducers, manipulating massive ultrasound data acquired from a large number of system channels is a challenge as is interconnecting thousands of elements of 2-D array with the imaging system's front-end electronics. Minimizing the number of transmitting and receiving channels and the firing events without degrading the image quality is one of solutions to reduce the overall system complexity and improve the frame rate. This paper introduces a hybrid volume beam-forming and scanning method for a medical ultrasound imaging system. We also present an efficient volume image-forming architecture using 2-D arrays for miniaturized volumetric ultrasound imaging scanners. To evaluate our works, computer simulations are performed. From the simulation results, we have shown that the presented method provides the comparable image quality to the fully-sampled array (FSA) beam-formation, and is feasible for realtime volumetric ultrasound scanners with miniature devices.
Optimal Synthesis of Arbitrary Switching Functions with Regular Arrays of 2-Input 1-Output Switching Elements (1969)

Most switching functions are not realizable by a single cascade of 2-input 1-output switching elements, even if repeated inputs are allowed. However, arrays of such cascades feeding a single collector cascade of AND or OR cells can be used to synthesize any function. This paper is concerned with optimal array realizations of this form.
Single-Walled Carbon Nanotube Network based Biosensors using Aptamers and its Characteristics (2008)

We have successfully demonstrated the single-walled carbon nanotube (SWNT) network based biosensor using aptamers as a protein recognition site. Aluminum was first patterned on the substrate with CVD-grown oxide. Then, gold was electrolessly plated on the Al electrodes and SWNTs were dip-coated on the substrate. Electrical pulses were applied through the electrodes to reduce a contact resistance. Finally, aptamers were attached on the surface of SWNTs and were used as a recognition site of human serum albumin (HSA). Carbon nanotube shows that it can be a powerful candidate for the next-generation sensor element for the biological/chemical detection.