gebhart/patrepeval huggingface dataset:
Possible femoral "steal" syndrome following femoral-femoral bypass. (1977)

1. The results of a clinical study of two patients who exhibited transitory donor limb ischemia without angiographic evidence of donor limb occlusive arterial disease following femoral-femoral bypass has been reported. 2. Although the circulation seemed to have been diminished in the donor limb following creation of a femoral-femoral bypass, the acute development of ischemia, there may have been other causes for the donor limb ischemia.
Silica xerogels from rice hull ash: structure, density and mechanical strength as affected by gelation pH and silica concentration (2000)

Silica xerogels were produced from rice hull ash (RHA), and the structure, density and mechanical strength of the gels were investigated. Silica was extracted as sodium silicate from RHA using 1M NaOH. This silicate solution was concentrated by volume reduction and used to obtain silica concentrations of 0.04, 0.06, 0.08, 0.10, and 0.12 g cm−3. The pH values of these silicate solutions were adjusted to 9.0, 10.0, 10.5, or 11.0 to produce silica gels. The silica gels produced were then dried at 80 °C for 24 h. X-ray diffraction demonstrated the amorphous nature of silica gels. Diffuse reflectance Fourier Transform Infrared (FTIR) spectroscopy was used to investigate the effect of gelation pH, and silica concentration on the chemical structure of the xerogel and concomitant effect on density and mechanical strength of the xerogel. The FTIR spectra demonstrated that at higher pH of gelation, siloxane bonding was the primary network in the xerogel. As the pH of gelation decreased, the structural silica gel network became the major interaction in the silica xerogel. At each gelation pH, the silica gel network increased with increase in silica concentration. The higher pH led to condensed glassy solids, while higher silica concentration produced highly porous silica xerogel. Hence, gelation pH and silica concentration of gel-forming solution had significant effects on the density and the mechanical strength of xerogels produced from rice hull silica. © 2000 Society of Chemical Industry
The study of three-dimensional measurement from an endoscopic images with stereo matching method (2006)

In these days, an endoscope is applied to therapy as well as a diagnosis. Especially, the early gastric cancer can be treated by ether endoscopic mucosa resection (EMR) or endoscopic submucosal dissection (ESD). So a pathological information of a depth direction of mucosal tissue is important. For a precise endoscopic diagnosis of a depth direction of mucosal tissue is used by ultrasound endoscope. And optical coherence tomography (OCT) and confocal endoscope will be used in the future. However the development of an image sensor is very fast, it could measure the depths of mucosa with a conventional endoscope to some extent. We studied that a probability of three dimensional measurement with a conventional endoscope.
Trace detection of methane using continuous wave cavity ring-down spectroscopy at 1.65 μm (2002)

The use of continuous wave cavity ring-down spectroscopy (cw CRDS) is demonstrated for the detection of tropospheric methane. Spectra of the 2ν3 overtone band of methane at wavelengths near 1.65 μm have been recorded in both laboratory air and under reduced pressures, and show quantitative agreement with absorption intensities and pressure-broadened line widths reported in the HITRAN 96 database. Experiments demonstrate a minimum detectable absorption coefficient that is currently αmin = 1.5 × 10−8 cm−1, equivalent to a number density of CH4 at ambient temperature of 2.9 × 1011 molecules cm−3 in a low pressure environment where Doppler broadening dominates the spectral lineshapes. The effects of pressure broadening reduce the detection limit of CH4 in 1 atm of air to 1.3 × 1012 molecules cm−3, corresponding to 52 parts per billion by volume. This is well below the 1.72 parts per million by volume average methane concentration in the lower troposphere.
A power antenna for deep space missions (1996)

Solar power becomes too weak to power spacecraft missions to the outer planets. However, by using a large antenna also as a solar concentrator, useful power levels can be obtained in deep space. This paper presents the results of a design study that determines the effectiveness and size of such a multiple-use reflector. Solar ray tracing defined the size and shape of the solar energy pattern on the power system. The concentrator can also be used to maintain spacecraft temperatures near 390 K throughout its flight. The weights of such a power antenna is competitive with RTG`s for the closer missions, but is heavier for the far planets. Further design trades are needed to reduce system weights, and some candidate approaches have been identified to accomplish that.
Robust probabilistic projections (2006)

Principal components and canonical correlations are at the root of many exploratory data mining techniques and provide standard pre-processing tools in machine learning. Lately, probabilistic reformulations of these methods have been proposed (Roweis, 1998; Tipping & Bishop, 1999b; Bach & Jordan, 2005). They are based on a Gaussian density model and are therefore, like their non-probabilistic counterpart, very sensitive to atypical observations. In this paper, we introduce robust probabilistic principal component analysis and robust probabilistic canonical correlation analysis. Both are based on a Student-t density model. The resulting probabilistic reformulations are more suitable in practice as they handle outliers in a natural way. We compute maximum likelihood estimates of the parameters by means of the EM algorithm.
Extrahippocampal gray matter atrophy and memory impairment in patients with medial temporal lobe epilepsy (2007)

Memory impairment observed in patients with medial temporal lobe epilepsy (MTLE) is classically attributed to hippocampal atrophy. The contribution of extrahippocampal structures in shaping memory impairment in patients with MTLE is not yet completely understood, even though atrophy in MTLE extends beyond the hippocampus. We aimed to evaluate the neuropsychological profile of patients with MTLE focusing on memory, and to investigate whether gray matter concentration (GMC) distribution within and outside the medial portion of the temporal lobes would be associated with their neuropsychological performance. We performed a voxel based morphometry study of 36 consecutive patients with MTLE and unilateral hippocampal atrophy. We observed a significant simple regression between general and verbal memory performance based on Wechsler Memory Scale-Revised and the GMC of medial temporal and extratemporal structures in patients with left MTLE. We also performed a "regions of interest analysis" of the medial temporal lobe, and we observed that the GMC of the hippocampus, entorhinal, and perirhinal cortices were consistently associated with general and verbal memory performance in patients with MTLE. We also observed that the GMC of the cingulate and orbito-frontal cortex are independently associated with verbal and general memory performances. Our results suggest that general and verbal memory impairments in patients with left MTLE are associated with atrophy of the hippocampus, the entorhinal, and the perirhinal cortex. We also suggest that atrophy and dysfunction of limbic and frontal structures such as the cingulate and the orbito-frontal cortex contribute to memory impairment in MTLE.
Peripheral T-cell lymphoma (1989)

Peripheral T-cell lymphoma is the most common type of T-cell lymphoma seen in adults in the United States. Clinical data were reviewed from 134 cases of peripheral T-cell lymphoma diagnosed in three centers. The median age of the patients was 57 years (range, 4-97 years), 59% were male, and 36 patients (27%) had a history of a preceding disorder of the immune system. The tumors were grouped histologically into large cell (43%), mixed large and small cell (40%), and small cell (17%). The stage at diagnosis was I (7%), II (21%), III (22%), and IV (50%). B symptoms were present in 57%. The most frequent sites of extranodal involvement were bone marrow (35%), skin (13%), and lung (11%). Eighty patients were treated with a multiagent chemotherapy regimen with proven curative potential in aggressive non-Hodgkin's lymphomas and the remainder of the patients received less intensive chemotherapy (36 patients), radiotherapy (nine patients), or no treatment (nine patients). Fifty percent of the intensively treated patients achieved complete remission and the actuarial 4-year survival was 45%. However, the 4-year, disease-free survival in patients with Stage IV disease was only 10%. Although peripheral T-cell lymphomas appeared similar in many ways to their B-cell counterparts, disease-free survival by stage was low and patients with Stage IV disease had an especially poor outlook.
Development and clinical trial results of a prototype device for trans-cutaneous monitoring of kidney function (2017)

A prototype medical device for trans-cutaneous monitoring of kidney function has been developed, validated, and used in a clinical trial on 16 healthy subjects having a wide range of skin color types. The fluorescent tracer agent MB-102 was administered intravenously as a bolus that was varied between 0.5 and 4 μmole/kg subject weight. The tracer agent was tracked as a function of time in plasma by blood sampling and trans-cutaneously at four body sites (sternum, forehead, arm, and side) simultaneously. Excitation was performed with a very low level of amplitude-modulated LED light at 450 nm (<50 μW/cm<sup>2</sup>), and fluorescence emission was synchronously detected at 570 nm. With adjustment of detection gain between subjects, no skin color dependence was observed of the signal-to-noise ratio (SNR) of the transcutaneous measurements. The primary source of measurement noise appeared to be subject motion, likely due to variations in blood content at the skin measurement site. A typical two-compartment pharmacokinetic dependence was observed with equilibration of the fluorescent agent between the vascular space into which it was injected and the extracellular space into which it subsequently diffused. Variation of this equilibration time was observed across body sites, with the sternum providing the shortest and most consistent equilibration. After equilibration, the terminal fluorescence time dependence at the sternum site was found to be highly correlated with tracer agent concentration time dependence sampled from the blood plasma.
Comparative bioequivalence study between a novel matrix transdermal delivery system of fentanyl and a commercially available reservoir formulation (2006)

The two formulations are expected to result in similar efficacy for the management of severe pain.
Segment-Based Proxy Caching for Internet Streaming Media Delivery (2005)

The proliferation of multimedia content on the Internet poses challenges to existing content delivery networks. While proxy caching can successfully deliver traditional text-based static objects, it faces difficulty delivering streaming media objects because of the objects' sizes as well as clients' rigorous continuous delivery demands. We present two techniques supporting segment based proxy caching of streaming media. We evaluated these techniques in simulations and real systems.
Automated detection of microcalcifications in mammograms through application of image pixel remapping and statistical filter (2002)

Mammography and finding of suspicious masses during self-examinations and clinical breast examinations form the primary screening tools for early detection of breast cancer. Mammography is essential for early detection of cancer, prior to any other means. Many abnormalities other than cancer are shown by screening mammography, leading to biopsy of the suspicious defect. Any enhancement that reduces the number of unnecessary biopsies is welcomed. Digital enhancement may aid in early detection of some patterns, such as microcalcification clusters, indicating the onset of DCIS (ductal carcinoma in situ) that accounts for 20% of all mammographically detected breast cancers, and early detection may enable a complete cure. The individual calcifications are hard to detect, due to their size and shape variability and the inhomogeneous background structure. Our study addresses only early detection of microcalcifications. We present an algorithm which locates microcalcifications based on local gray-scale variability, tissue structures and image statistics. The mammographs are digitally enhanced to accent textures and a previously developed threshold filter creates a binary mask of the calcification's spatial location.
An adaptive lattice algorithm for recursive filters (1980)

The purpose of this correspondence is to introduce an adaptive algorithm for recursive filters, which are implemented via a lattice structure. The motivation for doing so is that stability can be achieved during the adaptation process. For convenience, the corresponding algorithm is referred to as an "adaptive lattice algorithm" for recursive filters. Results pertaining to using this algorithm in a system-identification experiment are also included.
Effects of Nigella sativa supplementation for one month on cardiac reserve in rats. (2009)

Nigella sativa (N. sativa) has a long history of use in folk medicine. In a current study performed in this laboratory, two-month dietary supplementation with N. sativa extract to normal rats has shown a homogenous cardiac hypertrophy and enhanced cardiac contractility at baseline conditions. In the present study, shorter (one-month) duration of oral N. sativa administration was adopted to detect possible earlier cardiac responses. In addition, in vitro cardiac stress by the beta adrenoceptor agonist isoproterenol was used to assess the intrinsic cardiac reserve mechanisms. The hearts of Nigella-treated rats developed a moderate but significant hypertrophy that was evident by an increase in the heart weight to body weight ratio. The observed Nigella-induced cardiac hypertrophy was associated with an increase in the baseline cardiac inotropic properties as well as the maximal peak tension generation upon progressive cardiac stress by isoproterenol infusion. The demonstrated selective enhancement of the inotropic reserve favours the physiological nature of Nigella-induced cardiac hypertrophy, similar to that provoked by exercise training.
Synthesis and Electrochemical Properties of LiCo[sub 2]O[sub 4] Spinel Cathodes (2002)

The formation of spinel oxide has been investigated by chemically extracting lithium with the oxidizing agent from three samples of that were synthesized at 400, 600, and 800°C to obtain followed by heat-treatment at 200°C. The samples have been characterized by X-ray diffraction, atomic absorption spectroscopy, and a redox titration to determine the oxygen content. While the sample obtained from the crystallizes in the normal cubic spinel structure with a cation distribution of that obtained from the maintains the layer structure even after heating at moderate temperatures. The voltage profile of the spinel has been investigated experimentally. While the extraction of lithium from the 8a sites occurs at around 3.8-4 V, the insertion of lithium into the 16c sites occurs at around 3.5-3.6 V. The experimentally observed voltage difference of 0.3 V between the two processes is much smaller than that predicted from theoretical calculations (1.3 V) in the literature and observed for the system (1 V). © 2002 The Electrochemical Society. All rights reserved.
Detection of Gravitational Radiation (1974)

The claims by J. Weber must be examined in the context of system time-response and signal-to-noise ratio. After briefly discussing the sources and spectral distribution of system noise, we discuss optimal time-domain filtering. Although five independent groups have searched for two-antenna coincidences, only Weber has claimed any excess at zero time lag. We present preliminary results of a high sensitivity two-antenna coincidence search.
Nucleoside phosphorothioates as probes of the nucleotide binding site of brain pyridoxal kinase. (1982)

N-Dansyl-2-oxopyrrolidine, a competitive inhibitor with respect to ATP, was used as a probe of the nucleotide binding site of pyridoxal kinase. It binds to an hydrophobic region of the catalytic site with a KD = 6 microM. Time emission anisotropy measurements yielded a rotational correlation time of 38 ns for the bound inhibitor. N-Dansyl-2-oxopyrrolidine is immobilized by strong interactions with the nucleotide binding site. Protein fluorescence quenching was used to determine the dissociation constants of the diastereomers of ATP beta S. Both diastereomers bind with a dissociation constant KD = 25 microM. The kinetic parameters Km and Vmax for the pyridoxal kinase reaction were determined for ATP and the diastereomers of ATP beta S in the presence of Mg(II), Co(II), Zn(II), and Cd(II). With Mg(II), pyridoxal kinase exhibits stereoselectivity for the A diastereomer of ATP beta S, Vmax ratio, A/B = 30. In the presence of Cd(II), the stereoselectivity is reversed and the B diastereomer of ATP beta S is the preferred substrate. As the divalent cations were varied in the series Mg(II), Co(II), Zn(II), and Cd(II), the A/B ratio was progressively lowered to the value of 0.2 found for Cd(II). These data indicate that the divalent cations coordinate to the beta-phosphate group of the nucleoside triphosphate substrates. The results obtained with the diastereomers of ATP alpha S suggest that pyridoxal kinase uses the divalent cation, delta,beta,gamma-bidentate nucleotide chelate as substrate.
Beam‐space CMA adaptive array antennas (1995)

Abstract In the communication system using a constant modulus signal, a constant modulus algorithm (CMA) adaptive array antenna is effective for elimination of the frequency‐selective fading generated in multiple propagation paths. On the other hand, in the system in which CMA adaptive loops are installed for each antenna element in an array with more than 10 elements used for mobile satellite communication, the computing time and the amount of hardware become excessive. In this paper, a beam‐space CMA adaptive array antenna (BSCMA) is proposed in which a portion of the multibeam output is selected to form a CMA adaptive array. In the BSCMA, first, a multibeam is formed by means of a fast Fourier transform (FFT) and only the beams whose output power exceeds a threshold level are selected. an adaptive process is carried out with the CMA as a guiding principle only for the selected beam outputs. the BSCMA has an advantage of carrying out the capture of the desired wave and the elimination of the interference wave effectively with degrees of freedom corresponding to the number of arriving waves. the method is effective for an adaptive antenna system applied to an array antenna constructed with many antenna elements. In this paper, the configuration of the BSCMA is shown and its characteristics are investigated by the numerical simulation.
A Guide to Uncertainty Quantification for Experimental Engine Research and Heat Release Analysis (2019)

<div>Performing an uncertainty analysis for complex measurement tasks, such as those found in engine research, presents unique challenges. Also, because of the excessive computational costs, modeling-based approaches, such as a Monte Carlo approach, may not be practical. This work provides a traditional statistical approach to uncertainty analysis that incorporates the uncertainty tree, which is a graphical tool for complex uncertainty analysis. Approaches to calculate the required sensitivities are discussed, including issues associated with numerical differentiation, numerical integration, and post-processing. Trimming of the uncertainty tree to remove insignificant contributions is discussed. The article concludes with a best practices guide in the Appendix to uncertainty propagation in experimental engine combustion post-processing, which includes suggested post-processing techniques and down-selected functional relationships for uncertainty propagation.</div>
Plasmonic Color Filter and its Fabrication for Large‐Area Applications (2013)

A large plasmonic color filter (PCF) is fabricated via a simple and cost-effective method. The aluminum surfaces are surrounded by lithium fluoride with the penetration depth scaled to match the surface plasmon modes efficiently, resulting in high transmittance. All filters of primary colors show peak transmittance at the wavelength regions corresponding to those determined in calculations. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
The metabolism of ellagic acid in the rat (1980)

1. Following oral administration of ellagic acid to the rat, 10% of the dose was excreted as 3,8-dihydroxy-6H-dibenzo[b,d]pyran-6-one in urine and faeces. A second metabolite was detected in urine and faeces but not identified. Both metabolites were of microfloral origin, as their formation was not observed in germ-free rats but was demonstrated when ellagic acid was incubated in vitro with micro-organisms from rat gastro-intestinal tract. 2. Following intraperitoneal, but not oral, administration of ellagic acid, a third metabolite was detected in urine. 3. Unchanged ellagic acid was not detected in faeces or urine of any normal rat examined, but small amounts were detected in the faeces of germ-free animals. 4. Following oral administration of ellagic acid, two conjugates of 3,8-dihydroxy-6H-dibenzo[b,d]pyran-6-one were detected in bile, whereas intraperitoneal administration resulted in the biliary excretion of three conjugates of an unidentified metabolite.
High performance vector processing in reservoir simulation (1991)

Article Free Access Share on High performance vector processing in reservoir simulation Authors: L. C. Young Reservoir Simulation Research Corp., 2525 E. 21st Street, Tulsa, OK Reservoir Simulation Research Corp., 2525 E. 21st Street, Tulsa, OKView Profile , S. E. Zarantonello Computational Research Division, Fujitsu America, Inc., San Jose, CA Computational Research Division, Fujitsu America, Inc., San Jose, CAView Profile Authors Info & Claims Supercomputing '91: Proceedings of the 1991 ACM/IEEE conference on SupercomputingAugust 1991 Pages 304–315https://doi.org/10.1145/125826.126000Published:01 August 1991Publication History 1citation300DownloadsMetricsTotal Citations1Total Downloads300Last 12 Months38Last 6 weeks8 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteeReaderPDF
Band structure of Mg2Si and Mg2Ge semiconducting compounds with a strained crystal lattice (2002)

The effect of isotropic and uniaxial deformation of a lattice on the electronic band structure of the indirect band gap Mg2Si and Mg2Ge semiconductors was investigated using the method of linear augmented plane waves. The reduction of the lattice constant down to 95% results in a linear increase in the energy gap for the direct transition in magnesium silicide by 48%. In contrast, the indirect band gap decreases and tends to overlap with the valence band, which is typical of the zero-gar semiconductors. The stresses arising under uniaxial deformation not only shift the bands but also split the degenerate states. The changes in the interband transitions under the uniaxial deformation are found to be nonlinear.