gebhart/patrepeval huggingface dataset:
Signal enhancement of wearable ECG monitoring sensors based on Ensemble Empirical Mode Decomposition (2011)

The use of electrocardiogram (ECG) signals is an important standard for the diagnosis of heart diseases and other pathological phenomena. The ECG signal, however, is always contaminated by different types of noise, especially when the sensor is worn by patients during their normal activities, where the muscle and motion artefact are the dominant noise. This paper proposes a novel ECG enhancement method, which is based on Ensemble Empirical Mode Decomposition, to eliminate the contact noise in the signals. The performance of the proposed method is validated by using real data from the MIT-BIH database. Simulation results show that ECG signals from wearable monitoring sensors can be significantly enhanced by filtering out the contact noise while keeping all of the ECG features. The EEMD-based method exhibits obvious advantages over other similar ones in terms of de-noising.
Prevalence, Clinicopathological Characteristics, and Outcome of Human Papillomavirus–Associated Oropharyngeal Cancer in Southern Chinese Patients (2015)

This study has provided the most comprehensive clinical and pathologic information to date about this newly recognized disease in southern Chinese. In view of the global trend, we should anticipate and prepare for an increase in HPV-related OPSCC in southern China.
Red storm IO performance analysis (2007)

This paper will summarize an IO <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> performance analysis effort performed on Sandia National Laboratories Red Storm platform. Our goal was to examine the IO system performance and identify problems or bottle-necks in any aspect of the IO sub-system. Our process examined the entire IO path from application to disk both in segments and as a whole. Our final analysis was performed at scale employing parallel IO access methods typically used in High Performance Computing applications.
Drainage Estimation and Proppant Placement Evaluation from Microseismic Data (2014)

Abstract In this case study we outline how microseismic analysis can be used to optimize treatment design and determine the portion of the stimulated rock volume that should be productive. To begin, microseismic data was acquired with a permanently installed shallow buried array of geophones during the hydraulic fracturing of 17 wells in the Marcellus Shale. The processed results were used to conduct a multi-disciplinary study integrating geology, geomechanics, reservoir and completion engineering, and ultimately, production data. A stress inversion from focal mechanisms was performed, and correlations were made between hydrocarbon production and microseismic results. That work, in conjunction with the variability in the stimulation approach, was used to optimize the treatment design on an individual wellbore and on a field development scale. Treatment design analysis indicated optimum wellbore spacing, stage spacing and length as well as evaluated the vertical coverage of the treatment within the Marcellus. Incorporating information from source mechanisms, an event magnitude calibrated discrete fracture network (DFN) was modeled taking into account the seismic energy of the events, rock properties, the injected fluid volume and efficiency. Evaluating the placement of proppant inside the DFN enables distinction between the part of the stimulated rock volume (SRV) that contributes to production in the long term, and the part of the reservoir that was affected by the treatment but may not be hydraulically connected over a longer period of time. Finally, the permeability of the stimulated fracture system was calculated from the microseismic results. This allows for the evaluation of the drainage volume and estimation of production.
Isolation and Taxonomie Characterization of Acid Urease-producing Bacteria (1989)

About 16,000 isolates from animal feces and intestines were assayed for the production of acid urease, and the 700 strains selected as producers were examined as to their taxonomic properties. Of these 700 strains, 370 belonged to the genus Streptococcus, 312 to the genus Lactobacillus, 9 to the genus Escherichia, 6 to the genus Staphylococcus, 2 to the genus Morganella and 1 to the genus Bifidobacterium. The majority of the streptococci were identified as Streptococcus mitior, the remainder being Streptococcus salivarius, Streptococcus faecalis, Streptococcus faecium, Streptococcus avium and Streptococcus gallinarum. The majority of the lactobacilli were considered to be Lactobacillus reuteri or Lactobacillus fermentum and Lactobacillus animalis or Lactobacillus salivarius, the remainder being Lactobacillus ruminis, Lactobacillus viridescens, Lactobacillus vac- cinostercus and strains considered to be Lactobacillus acidophilus, Lactobacillus amylovorus, Lactobacillus crispatus or Lactobacillus gasseri.
Phase II AIDS Malignancy Consortium (AMC) trial of topical halofuginone in AIDS-associated Kaposi’s sarcoma (KS): clinical and biological effects using a novel intra-patient control design (2010)

Background KS is a disease of multifocal vascular proliferation. Matrix metalloproteinases (MMPs) and type I collagen play critical roles in angiogenesis and are potential targets. Halofuginone (Tempostatin™), a synthetic quinazolinone alkaloid derivative, induced anti-angiogenic, anti-metastatic and anti-proliferative effects in preclinical studies. It inhibits several essential stages of angiogenesis: endothelial cell proliferation, MMP2 expression, BM invasion, ECM deposition by newly formed vessels, synthesis of type I collagen during angiogenic sprouting, and bFGF-induced neovascularization. These data suggested that halofuginone might have activity in KS. Methods
Implementation of Triple P‐Positive Parenting Program in Hong Kong: predictors of programme completion and clinical outcomes (2006)

This study examined the effectiveness of the Triple P‐Positive Parenting Program in a government child health service delivery context with Chinese parents in Hong Kong. Specifically, the study sought to identify pre‐intervention variables that might predict programme outcomes such as level of clinical improvement and programme completion. Participants were 661 parents of pre‐school and primary aged children participating in a group version of the Triple P‐Positive Parenting Program. There were significant decreases in disruptive child behaviours, levels of parenting stress, general stress and anxiety and an increase in parenting sense of competence. Greater change in reports of child behaviour problems was related to lower levels of family income, new immigrant family status, and higher pre‐intervention levels of parenting stress. The present study provides a profile of parents who are most likely to benefit from parent training programmes.
An aperture-coupled small microstrip antenna with enhanced bandwidth (2003)

There has been considerable interest in the development of small microstrip antennas for personal communication. Common techniques for reducing the size of a microstrip antenna is to employ a substrate with high dielectric constant and/or to incorporate a shorting pin in a microstrip patch. It is well-known, however, that the bandwidth of the microstrip antenna becomes narrower as the size of the antenna becomes smaller. Consequently, it is difficult to achieve an impedance bandwidth of more than 3% for small microstrip antennas. It is also possible to enhance the bandwidth without enlarging the size of the antenna structure by designing a matching network in the feedline. We have applied this technique to the aperture-coupled small antenna-specifically, an open-circuited stub connected in shunt with the microstrip feedline. To further enhance the bandwidth of the antenna, an additional shunt stub and multiple shorting pins an incorporated. In this paper, the design of the aperture-coupled antenna with shunt stubs and shorting pins is described, and experimental data for the return loss and radiation pattern of the antenna are presented.
Linear and Non-Linear Response of Liquid and Solid Particles to Energetic Radiation (1991)

The principal purpose of the research is to investigate the linear and non-linear laser interaction with small aerosols and solid particles. Experimental work is devoted to excimer laser beam interaction with small droplets of water, methanol, and fog oil at irradiances up to 200 GWatts/cm2. Also of interest in this research is the interactions with solid particles including A12O3, SiC, glass spheres, A1 spheres, CaF2 and W particles at both atmospheric and reduced pressures. Special attention is given to understanding the dynamics of the interaction processes by using a fast streak camera and excimer laser imaging. Jointly with the experimental work is the problem of understanding the electromagnetic interaction of focused laser beams with matter. Emphasis is given to developing computer codes to calculate internal and near electromagnetic fields for plane/focused laser beams incident upon spheres. Another phase of this investigation is devoted to theoretical modeling the laser imaging system used to obtain nanosecond time scale shadow images of exploding droplets. In addition, theoretical models for both polarized and unpolarized particle thermometry are developed.
DIDECALINO-14-CROWN-4. HIGHLY LITHIUM ION SELECTIVE EXTRACTANT (1986)

Abstract Didecalino-14-crown-4 has been synthesized and found to have the conspicuous extractability as well as selectivity for lithium ion.
Détection et culture des archaea associées aux muqueuses intestinale et orale humaines (2013)

Les archaea constituent l'un des quatre domaines connus du vivant. Contrairement à ce que leur nom laisse supposer, elles ont colonisé tous les écosystèmes et les microbiotes de certains hôtes dont l'Homme. Chez l'homme, certaines espèces d'archaea méthanogènes ont été associées aux muqueuses orale, intestinale et vaginale. Ces archaea méthanogènes sont des procaryotes anaérobies stricts et leurs conditions de culture restent fastidieuses et très mal connues. Quatre archaea methanogènes seulement ont été isolées à partir de prélèvements humains y compris dans le microbiote digestif Methanobrevibacter smithii détectée dans 95,7% des individus, Methanosphaera stadtmanae retrouvée chez environ un tiers des individus et plus récemment dans notre laboratoire Methanomassilicoccus luminyensis détectée en moyenne chez 4% des individus avec une prévalence liée à l'âge ; et dans le microbiote orale Methanobrevibacter oralis isolée à partir de la plaque dentaire.
Analysis of polymorphism based on SSCP markers in gamma-irradiated (Co60) grape (Vitis vinifera) varieties (2010)

The effects of induced mutation produced by five different doses of gamma irradiation (20, 25, 30, 40, and 45 Gy) were determined using molecular approaches in Vitis vinifera cultivars, namely Thompson Seedless (Sultani Çekirdeksiz) (progenitor of seedless vinifera variety) and Kalecik Karasi (one of the best quality wine grape variety of Turkey). Mutant candidates were selected through morphological observations of mutation-induced phenotypic changes during the first, second and third vegetation periods after radiation applications. Amplification studies started with 50 primers (expressed sequence tags) applied to the mutated individuals. Only 15 of these primers revealed polymorphic profiles. Twenty-two candidate mutants of Thompson Seedless and Kalecik Karasi, selected based on morphological observations, were analyzed with 15 single-strand conformation polymorphism (SSCP) markers, together with 46 control plants. Polymorphic bands were rarely obtained in the SSCP analysis, and they were not reproducible.
On the Feasibility of few-THz Bipolar Transistors (2007)

We review the limits faced in seating of InP-based bipolar transistors for increased device bandwidth. Emitter and base contact resistivities and IC thermal resistance are the major limits to increased device bandwidth. Devices with 1-1.5 THz simultaneous f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">tau</sub> , and f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">max</sub> are feasible; these will enable 750 GHz monolithic amplifiers and medium-scale digital ICs at ~400-500 GHz clock rate.
Investigation of image nonlinearities in a photon counting image tube (1994)

The image linearity of a charge division position readout anode, for instance, a Wedge and Strip Anode (WSA), is controlled by several factors. In addition to the drift field uniformity and pattern geometry requirements, linearity can be affected by the surface characteristics of the anode itself. We have undertaken experiments to establish the mechanisms which lead to non-linear response and suggest ways to avoid it. We present measured image non linearity of image intensifier tubes using two different types of charge division position readout anode; the Wedge and Strip anode (WSA) and the Spiral Anode (SPAN) devices. Both intensifier tubes were manufactured by DEP bv., Holland and utilize S20 or Caesium Telluride semi- transparent photocathodes on Magnesium Fluoride, Fused Silica or Calcium fluoride windows, proximity focused to a microchannel plate (MCP) stack. All detector variants built thus far use a stack of three MCPs in a Z configuration. We have undertaken experiments using a de- mountable detector of similar design but without window or photocathode. The role of secondary electrons produced on the anode in charge redistribution was investigated by using an intermediate conductive grid of high open area between the MCP and anode. The grid was used to define the electric field in a region just above the anode in order to either suppress the range of the anode secondary electrons, or prevent them from returning to the anode by collecting them on the grid. We present some preliminary results from these experiments and suggest modifications to the intensifier design to maximize the detector performance.
The Compact, Four Barrel High Speed Pellet Injector For The Ignitor Experiment (2007)

Ignitor is a compact, high field tokamak ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">R<sub>0</sub></i> = 1.32 m, <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">B<sub>T</sub></i> = 13 T) designed to attain ignition in high density, relatively low temperature plasmas <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">(n<sub>e0</sub> ≅ n<sub>i0</sub> ≅ 10<sup>21</sup> m<sup>-3</sup>, T<sub>e0</sub> ≅ T<sub>i0</sub> ≅ 11keV)</i> , by Ohmic heating (or with small amounts of additional ICRF heating). Tailoring of the density profile peaking during the initial plasma current rise is important to optimize Ohmic and fusion heating rates. Therefore, a pellet injector has always been included in the Ignitor design. Simulations performed with the NGS ablation model, for the reference ignition plasma parameters in Ignitor, indicate that deuterium pellet of a few mm sizes (≤ 4 mm) injected at 3-4 km/s from the low field side should achieve sufficient penetration, particularly during the current ramp up. A four barrel, two-stage pneumatic injector for the Ignitor experiment has been built in collaboration between ENEA and Oak Ridge National Laboratory, featuring two innovative concepts: (i) the proper shaping of the propellant pressure pulse to improve pellet acceleration, and (ii) the use of fast closing (~ 10 ms) valves to drastically reduce the expansion volumes of the propellant-gas removal system. The ENEA sub-system, including four independent two-stage guns and pulse- shaping valves, the gas removal system, and the associated controls and diagnostics, has been extensively tested at CRIOTEC. The ORNL sub-system consists of the cryostat and pellet diagnostics, with related control and data acquisition system. Initial testing with D <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> pellets at speeds of ~1 km/s, using ORNL single-stage propellant valves, are scheduled to be completed by June 2007. The ENEA two-stage drivers will then replace the ORNL propellant valves, and integrated testing at high speeds (>3km/s) will be finally carried out. The NGS model was also used to assess the maximum ablation depth of D <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> pellets, of the sizes and speeds produced by the Ignitor Pellet Injector, inside JET plasmas. A similar analysis is now extended to the Large Helical Device (LHD), which has recently obtained high density plasma discharges (up to 5×10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">20</sup> m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-3</sup> ). Deep pellet penetrations can be achieved over a wide range of plasma parameters in LHD, even at its highest temperature, thanks to the high speed of the IPI pellets.
Specific AHNAK expression in brain endothelial cells with barrier properties (2004)

The blood-brain barrier (BBB) is essential for maintaining brain homeostasis and low permeability. Because disruption of the BBB may contribute to many brain disorders, they are of considerable interests in the identification of the molecular mechanisms of BBB development and integrity. We here report that the giant protein AHNAK is expressed at the plasma membrane of endothelial cells (ECs) forming specific blood-tissue barriers, but is absent from the endothelium of capillaries characterized by extensive molecular exchanges between blood and extracellular fluid. In the brain, AHNAK is widely distributed in ECs with BBB properties, where it co-localizes with the tight junction protein ZO-1. AHNAK is absent from the permeable brain ECs of the choroid plexus and is down-regulated in permeable angiogenic ECs of brain tumors. In the choroid plexus, AHNAK accumulates at the tight junctions of the choroid epithelial cells that form the blood-cerebrospinal fluid (CSF) barrier. In EC cultures, the regulation of AHNAK expression and its localization corresponds to general criteria of a protein involved in barrier organization. AHNAK is up-regulated by angiopoietin-1 (Ang-1), a morphogenic factor that regulates brain EC permeability. In bovine cerebral ECs co-cultured with glial cells, AHNAK relocates from the cytosol to the plasma membrane when endothelial cells acquire BBB properties. Our results identify AHNAK as a protein marker of endothelial cells with barrier properties.
Modeling on Evaporation Characteristics of a Reprocessing Plant High-Level Liquid Waste Concentrator (1990)

Modeling was carried out on vapor-liquid equilibria of nitric acid containing highly concentrated fission product nitrates to simulate the evaporation characteristics of a reprocessing plant high-level liquid waste (HLLW) concentrator. Results obtained with the model verified its reliability for prediction of vaporliquid equilibria of nitric acid containing highly concentrated nitrates. The results compared well with experimental data obtained with a pilot plant for HLLW concentration (capacity of 40 dm3).
Vorhersage von magnetischen Kopplungen in Filterschaltungen. (2006)

Ziel bei der Entwicklung eines EMV-Filters ist es mit einer minimalen Anzahl von Bauteilen eine gewünschte Filterperformance zu erreichen. Dem entgegen stehen dem Designer zwei Arten von parasitären Effekten. Die erste Art beinhaltet die parasitären Elemente der Bauteile, wie z.B. die ESL und ESR der Kondensatoren oder die parasitären Windungskapazitäten der Drossel. Diese Effekte sind bekannt und leicht durch eine Impedanzmessung der Bauteile handhabbar. Trotzdem ist diese Art der Nachbildung zu ungenau, wie die starke Abweichung des gemessenen vom erwarteten Ergebnis zeigt. Diese Abweichung hat ihre Ursache in der zweiten Art der parasitären Effekte, der induktiven Verkopplung der Bauteile untereinander und ist abhängig von der Anordnung der Bauteile auf dem Schaltungsträger. So können sich Filterschaltungen mit den gleichen Topologien und verwendeten Bauteilen unterschiedlich verhalten, wenn das Filterlayout unterschiedlich ist. Zur Berücksichtigung müssten die elektromagnetischen Felder berechnet und in die Filtersimulation eingebunden werden, diese Vorgehensweise scheiterte jedoch bisher an der Komplexität des Problems. In dieser Abhandlung wird gezeigt, wie durch den Einsatz der PEEC-Methode die Komplexität der Berechnung elektromagnetischer Felder stark reduziert und für den Anwender zur Filtersimulation einsetzbar wird. Die PEEC-Methode überführt hierbei die elektromagnetischen Eigenschaften der leitenden Strukturen des Aufbaus in ein elektrisches Ersatzschaltbild aus Eigen- und Gegenparametern, welche das bisherige Filtermodell erweitern. Problematisch ist bei dieser Methode die Nachbildung permeabler Materialien, da dieses prinzipbedingt ausgeschlossen ist. Es wird dazu eine Lösung vorgestellt, welche die einfache Nachbildung von inhomogenen Permeabilitäten ermöglicht. So wird es mit dieser Methode möglich auch ferritbehaftete Bauelemente nachzubilden. Es werden die PEEC-Modelle der Bauteile passiver Filter vorgestellt und anhand von Feldmessungen verifiziert. Anhand eines Netzfilters wird die Vorgehensweise der Berechnung sowie die Einbindung der induktiven Verkopplungen in das bisherige Filtermodell demonstriert und die sehr gute Übereinstimmung von Simulation und Messung präsentiert. Dabei wird der Einfluss auch sehr geringer Verkopplungen eindringlich dargestellt. Aus den Ergebnissen werden Hinweise für den Filterdesigner abgeleitet, wie die induktiven Verkopplungen minimiert und so die gewünschte Filterperformance sichergestellt werden kann. So können im Vorfeld der Entwicklung Aussagen über die optimale Bauteilanordnung getroffen und dadurch das zeitaufwendige 'trial and error'-Verfahren des Filterentwurfs überwunden werden.
Behavior of concentrated polymer solutions under periodic stresses (1947)

Abstract Experimental methods for measuring the mechanical properties of concentrated polymer solutions and other viscoelastic systems under periodically varying stresses are reviewed. These include direct measurements of stress and strain, measurements of response at resonance frequencies determined by the inertia of the apparatus, propagation of waves in extended media, and measurements of resonance vibrations. The conditions for the suitability of each method are discussed, and equations for the interrelation of the various quantities measured are given. Examples are shown to illustrate the fitting of experimental data to the calculated behavior of mechanical models, in order to obtain frequency‐independent mechanical constants which can be interpreted in terms of molecular behavior.
Bridging N-Aminoisocyanate Ligands in Heterobimetallic Complexes: Coupling of Zirconium Hydrazinediides and Transition-Metal Carbonyls (2009)

Reaction of the zirconium complex [Zr(N2TBSNpy)(═NNPh2)(py)] with metal carbonyl complexes yielded the heteronuclear complexes [(N2TBSNpy)(py)Zr{μ-OCNNPh2-1κC:2κ2NO}Mm(CO)n] (M = Cr, Mo, W (m = 1, n = 5), Fe (m = 1, n = 4), Mn (m = 2, n = 9)). The bridging N-aminoisocyanato ligands in the dinuclear complexes were formed by [2 + 2] cycloaddition of the Zr═NNR2 unit and coordinated CO.
Dicarboxylic Acid<i>bis</i>(<scp>l</scp>-Prolyl-pyrrolidine) Amides as Prolyl Oligopeptidase Inhibitors (2002)

New dicarboxylic acid bis(L-prolyl-pyrrolidine) amides were synthesized, and their inhibitory activity against prolyl oligopeptidase from pig brain was tested in vitro. As compared with earlier described prolyl oligopeptidase inhibitors, these new compounds have in common an L-prolyl-pyrrolidine moiety, but the typical lipophilic acyl end group is replaced by another L-prolyl-pyrrolidine moiety connected symmetrically with a short dicarboxylic acid linker. These compounds are a new type of peptidomimetic prolyl oligopeptidase inhibitor.