gebhart/patrepeval huggingface dataset:
CM noise containment in a DC-fed motor drive system using DM filter (2012)

This work proposes an improved filter topology based on conventional filter design for dc-fed motor drive system with long cable connections where EMI filters are required for both AC and DC side. This paper investigates the interactions between AC and DC side filters based on the analysis of common mode (CM) and differential mode (DM) EMI noise equivalent circuits. With this consideration, a filter topology with connecting the AC and DC DM capacitor midpoint topology is proposed. This topology is similar with the conventional design, but it utilizes the existing large DM capacitors to confine the noise within the converter and attenuate both AC and DC CM noise. Detail frequency domain analysis is provides and the results show that this configuration provides much higher noise attenuation on both AC and DC CM noise and potential capability of reducing the conventional filter size. Simulation and experimental results verified the proposed method.
Advances in the treatment of cerebral venous sinus thrombosis (2016)

Cerebral venous and sinus thrombosis (CVST) is a special type of cerebrovascular disease characterized by cerebral venous return disturbance with increased intracranial pressure due to variety of causes. CVST accounts for 0.5%~1% in all the cerebrovascular diseases. The early diagnosis and treatment of CVST have a significant impact on the prognosis of the patients. This article reviews the advances in the treatment of CVST.


Key words: 
Intracranial Thrombosis; Venous Thrombosis; Sinus Thrombosis, Intracranial; Seizures; Anticoagulants; Thrombolytic Therapy; Thrombectomy; Anticonvulsants
A New Virus-tolerant Southernpea (1998)

Southernpea (cowpea), Vigna unguiculata L. Walp, is an important processing and fresh-market vegetable in the southern United States. Several varieties are available for growers, but there are very limited numbers that combine bush plant type, earliness, good processing quality and virus resistance. A single plant selection from the variety `Excel' offers this combination of traits. The breeding lines 87-435-68 is a singe plant selection from the variety `Excel' that was made on the basis of its reaction to blackeye cowpea mosaic virus (BLCMV). The resistance mechanism is somewhat different than the traditional varieties with single gene resistance to BLCMV. The reaction to BLCMV is manifested as tolerance rather than classical single gene immunity.
Symmetric Macrocycles by a Prins Dimerization and Macrocyclization Strategy (2009)

A tandem dimerization/macrocyclization reaction utilizing the Prins cyclization has been developed. This reaction develops molecular complexity through the formation of highly substituted dimeric tetrahydropyran macrocycles. Mild conditions utilizing rhenium(VII) catalysts were explored for aromatic substrates, while harsher Lewis acidic conditions were used for aliphatic substrates. Both aldehydes and acetals are shown to be viable substrates for this reaction.
A Special Report on the Chitosan-based Hemostatic Dressing: Experience in Current Combat Operations (2006)

This report on the field use of the HemCon dressing by medics suggests that it is a useful hemostatic dressing for prehospital combat casualties and supports further study to confirm efficacy.
Applications of automata theory to ray tracing (2002)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2002Applications of automata theory to ray tracingAuthors: Carlos PiedrahítaMartin TygelLúcio T. SantosCarlos PiedrahítaICP‐ECOPETROL, Martin TygelIMECC‐UNICAMP, and Lúcio T. SantosIMECC‐UNICAMPhttps://doi.org/10.1190/1.1817093 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1817093FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2002ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2002 Pages: 2478 publication data© 2002 Copyright © 2002 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 03 Jan 2005 CITATION INFORMATION Carlos Piedrahíta, Martin Tygel, and Lúcio T. Santos, (2002), "Applications of automata theory to ray tracing," SEG Technical Program Expanded Abstracts : 2011-2014. https://doi.org/10.1190/1.1817093 Plain-Language Summary PDF DownloadLoading ...
Evaluation of a lingual interface as a passive surgical guiding system (2006)

Under conventional "open-" surgery, the physician has to take care of the patient, interact with other clinicians and check several monitoring devices. Nowadays, the Computer Assisted Surgery proposes to integrate 3D cameras in the operating theatre in order to assist the surgeon in performing minimal-invasive surgical punctures. The cameras localize the needle and the computer guides the surgeon towards an intracorporeal clinically-defined target. A visualization system (screen) is employed to provide the surgeon with indirect visual spatial information about the intracorporeal positions of the needle. The present work proposes to use another sensory modality to guide the surgeon thus keeping the visual modality fully dedicated to the surgical gesture. For this, the sensory substitution paradigm using the Bach-y-Rita's "Tongue Display Unit" (TDU) is exploited to provide to the surgeon information of the position tool. The TDU device is composed of a 6x6 matrix of electrodes transmitting electrotactile information on the tongue surface. The underlying idea consists in transmitting information about the deviation of the needle movement with regard to a pre-planned "optimal" trajectory.
Cellular myc (c-myc) in fish (rainbow trout): its relationship to other vertebrate myc genes and to the transforming genes of the MC29 family of viruses. (1986)

We have isolated, cloned, and sequenced the rainbow trout (Salmo gairdneri) c-myc gene. The presumptive coding region of the trout c-myc gene shows extensive homology to the c-myc genes of chicken, mouse, and human. Comparison of nucleotide sequences reveals that human, mouse, chicken, and trout c-myc genes contain at least two coding exons, interrupted by introns of decreasing size of 1.38 kilobases (kb), 1.2 kb, 0.97 kb, and 0.33 kb, respectively. The exons are clearly delineated by donor-acceptor splice signals. The degree of nucleotide homology between trout, chicken, and human exon II is less than that observed for exon III. However, the greatest homology among these three genes is localized to two specific regions within exon II (myc boxes A and B). At the predicted amino acid level, fish c-myc shows considerable homology to vertebrate c-myc gene products. Trout c-myc is expressed in normal trout cells as a single 2.3-kb mRNA species, similar in size to other vertebrate transcripts.
Faculty Opinions recommendation of Protein storytelling through physics. (2020)

Every protein has a story-how it folds, what it binds, its biological actions, and how it misbehaves in aging or disease. Stories are often inferred from a protein's shape (i.e., its structure). But increasingly, stories are told using computational molecular physics (CMP). CMP is rooted in the principled physics of driving forces and reveals granular detail of conformational populations in space and time. Recent advances are accessing longer time scales, larger actions, and blind testing, enabling more of biology's stories to be told in the language of atomistic physics.Copyright © 2020, American Association for the Advancement of Science. PMID: 33243857 Funding information This work was supported by: NIGMS NIH HHS, United States Grant ID: RM1 GM135136 NIGMS NIH HHS, United States Grant ID: R01 GM125813 NIGMS NIH HHS, United States Grant ID: R01 GM107104
New Synthesis of Vaulted Biaryl Ligands via the Snieckus Phenol Synthesis (2005)

[reaction: see text] In an effort to develop a synthesis of the VAPOL ligand that avoids the use of a chromium carbene complex, a route was examined that involved the annulation of a naphthalene carboxamide via the method of Snieckus. The latter derivatives could be converted in a two-step sequence to 2-phenyl-4-phenanthrols in 60-72% overall yields. The utility of this method for the synthesis of VAPOL derivatives is demonstrated in the synthesis of (S)-7,7'-dimethyl-VAPOL.
Intraventricular Flow Velocity Vector Visualization Based on the Continuity Equation and Measurements of Vorticity and Wall Shear Stress (2013)

We have developed a system to estimate velocity vector fields inside the cardiac ventricle by echocardiography and to evaluate several flow dynamical parameters to assess the pathophysiology of cardiovascular diseases. A two-dimensional continuity equation was applied to color Doppler data using speckle tracking data as boundary conditions, and the velocity component perpendicular to the echo beam line was obtained. We determined the optimal smoothing method of the color Doppler data, and the 8-pixel standard deviation of the Gaussian filter provided vorticity without nonphysiological stripe shape noise. We also determined the weight function at the bilateral boundaries given by the speckle tracking data of the ventricle or vascular wall motion, and the weight function linear to the distance from the boundary provided accurate flow velocities not only inside the vortex flow but also around near-wall regions on the basis of the results of the validation of a digital phantom of a pipe flow model.
Development of Self-Healing Concrete with Heating Device (2005)

In this paper, a fundamental design concept and some experimental results are reported to develop a kind of intelligent concrete that has the self-healing function with heating device. Self-diagnosis composite is employed as the heating device that can heat up the damaged part in concrete. This heating device is embedded in concrete and it heats up the damaged part of concrete once a crack occurs to cross the device. In the meanwhile, a pipe protected by heat-plasticity film containing repair agent is embedded in concrete, too. Hence, selective heat around crack can melt the film to release the repair agent into crack and harden the repair agent in crack. Experimental results confirm the suggested method to be effective.
Single‐Solvent, Ligand‐Free, Gram‐Scale Synthesis of Cs4PbBr6 Perovskite Solids with Robust Green Photoluminescence (2019)

Abstract The preparation of luminescent Cs 4 PbBr 6 perovskite solids with current methods either needs a complex procedure, or needs a variety of ligands, and a combination of good solvents and anti‐solvents. The potential environmental risks are inevitable when they are produced in large scale. Herein, an environmentally friendly route for the mass production of luminescent Cs 4 PbBr 6 perovskite solids using a single solvent under ambient conditions is presented. Gram‐scale Cs 4 PbBr 6 perovskite solids are produced within tens of minutes using a small amount of DMF, specifically, 4 mL DMF solution can produce over 10 g products per batch. Because no ligands and anti‐solvents are utilized in the whole procedures, the ligand‐free Cs 4 PbBr 6 perovskite solids are facilely harvested after the evaporation of solvent. More importantly, the solvent vapor can be recovered and reutilized, which can eliminate the environmental pollution caused by organic solvent. The experimental results revealed that the solvent, reaction time, and PbBr 2 /CsBr molar ratios are crucial for the formation of Cs 4 PbBr 6 perovskite solids and their luminescent performances. Such Cs 4 PbBr 6 perovskite solids exhibit strong green PL emission, high PL quantum yield and reversible fluorescent response towards heat and light, which enable them to be suitable for applications in optoelectronic devices.
Starch Analysis Using Thermostable alpha‐Amylases (1982)

Abstract A new method is described for determining the starch content of cereal products. It involves the solubilization of starch with a thermostable α‐amylase followed by the complete hydrolysis with an amyloglucosidase. The glucose is then determined by the hexokinase/glucose‐6 phosphate dehydrogenase procedure. By using an α‐amylase at high temperature, an autoclave is not required to gelatinize and solubilize the starch prior to amyloglucosidase treatment. α‐Amylase is added to the sample before heating and degradation begins as soon as the gelatinization temperature is reached, before retrogradation can occur. The procedure was found to be superior to either treatment with acid or alkali, methods which also do not require an autoclave.
BS40 Hypoxia induces gene-specific epigenetic modifications in human cardiac fibroblasts (2019)

<h3>Introduction</h3> Ischemia caused by coronary artery disease and myocardial infarction leads to aberrant ventricular remodelling and cardiac fibrosis. This occurs partly through accumulation of gene expression changes in resident fibroblasts, resulting in an overactive fibrotic phenotype. We have recently shown that human myocardial tissue hypoxia is associated with an enhanced pro-fibrotic gene profile in the tissue and, more significantly, that hypoxia-induced pro-fibrotic changes in cardiac fibroblasts are associated with global DNA hypermethylation. <h3>Purpose</h3> Based on this epigenetics data, we have conducted a gene-specific methylation study to investigate methylation changes that occur in hypoxic ventricular fibroblasts and to gain novel insights into mechanisms that may contribute to post-ischemic cardiac remodelling. <h3>Methods</h3> Human ventricular cardiac fibroblasts were exposed to 1% oxygen for up to 8 days. Global methylation changes were assessed using anti-5-methylcytosine (5MeC) staining, flow cytometry, QPCR, and western blot. Gene-specific methylation changes associated with hypoxia and an increased fibrotic state were determined by 5MeC immunoprecipitation and GeneChip human promoter arrays (Affymetrix), and validated by bisulphite genomic sequencing (BGS). <h3>Results</h3> Hypoxia-induced pro-fibrotic changes in cardiac fibroblasts included increased cell proliferation and increased alpha smooth muscle actin, collagen 1, DNMT1 and DNMT3B expression which associated with global DNA hypermethylation. Array analysis revealed 37 gene-specific hypermethylation changes and 133-hypomethylation changes occurred in response to chronic hypoxia. <h3>Conclusion</h3> Epigenetic modifications and changes in the epigenetic machinery identified in cardiac fibroblasts during prolonged hypoxia may contribute to the pro-fibrotic nature of the ischemic milieu in the heart during disease. The application of epigenetic-based therapy, such as DNA methylation modifiers, as a treatment option for cardiac pathologies associated with fibrosis and ischemia may provide therapeutic benefit. <h3>Conflict of interest</h3> None
Abstract 13612: Association of Tracheobronchial Calcification With Cardiovascular Events and All-cause Mortality in Multi-Ethnic Study of Atherosclerosis (MESA); the MESArthritis Ancillary Study (2020)

Introduction: Tracheobronchial calcification (TBC), is a readily available potential biomarker in non-contrast chest CT scans, including cardiac calcium scan CTs. However, there is a paucity in literature investigating how this measure contributes to CVD risk prediction. Hypothesis: TBC is associated with CVD and mortality events independent from CAC score. Methods: Available non-contrast chest CT images from Johns Hopkins Hospital field center within the fifth exam of the MESA cohort (2010-2012) were re-analyzed as part of the MESArthritis ancillary study. The calcifications observed in the wall of tracheobronchial tree were measured from aortic arch to carina, by calcium scoring package (VScore, Vitrea 7.11, Vital Images). Outlier values were excluded using the Interquartile range-based outlier fence estimates. Association of TBC with cardiovascular risk factors was investigated by linear regression models. Cox proportional hazard models were applied for CVD and mortality event prediction by TBC with and without adjustment for age, gender, race, CAC, and Framingham global CVD risk score (FRS). Results: After exclusion of 39 outliers, a total of 382 participants (51.2% female) with a mean age of 69.9 (±8.82) were included. TBC was associated with age (β=3.26, p:.002), gender (β=96.30, p&lt;.001), race (β=-28.96, p:.002), and FRS (β=3.57, p&lt;.001). In time-to-event analysis, risk of CHD, CVD, and mortality increased by 1.34, 1.28, and 1.15-fold respectively, by every 100 increase in TBC score adjusted for age, gender, and race. Compared with CAC score (C-index: 0.78) and FRS (0.71) individually, the model with TBC addition to both scores had higher C-index (0.82) for CHD event prediction. Conclusions: Quantification of calcifications in tracheobronchial area can be used to predict CHD, CVD and all-cause mortality and augment the predictive power of the highly validated CAC and FRS for CHD events.
Keyword verification considering the correlation of succeeding feature vectors (2002)

The assumption of statistically independent feature vectors within the HMM approach is a well known problem. The aim of this study is to explore a simple and feasible method, that takes the correlation of adjacent feature vectors into account. A so called correlated HMM, that estimates the emission probability of a state with respect to correlated feature vectors, is built by combining two separate knowledge sources. On the one side, a traditional HMM provides an emission probability under the condition of a certain state, whereas on the other side a linear predictor delivers an emission probability considering the previous feature vectors. The efficiency of this method is shown with the help of the German SpeechDat(M) database. The application of the correlated HMM within the verification procedure of a keyword spotter provided an improvement of the figure-of-merit from 87.1% to 88.6%.
[Molecular forms of guanine aminohydrolase (author's transl)]. (1978)

Guanine aminohydrolase (E.C. 3.5.4.3) has been purified 11-fold from the supernatant fraction of guinea-pig liver homogenates in 0.25 M sucrose (centrifuged at 50,000 X g) through thermic denaturation at 60 degrees C and ammonium sulphate fractionation (30--60% saturation). The enzyme in the homogenates and purified preparations exhibited two Km values. In both preparations four enzymatic electrophoretic bands have been detected. Purified guanine aminohydrolase is chromatographically resolved on DEAE-sephadex in three components whose active forms appeared separately on their pherograms. The enzymatic form eluted at lower ionic strength has the least anodic mobility, is inhibited by guanine (4 X 10(-5) M) and presents only one Km value (1.5 X 10(-5) M). The enzymatic form eluted at greater ionic strength exhibits the highest anodic mobility, is also inhibited by guanine (7 X 10(-5) M) and its Km value seems to be 6.3 X 10(-6) M. Molecular weight of enzymatics forms determined by Sephadex G-200 chromatography, is 120,000 +/- 5,000. The preceding results, correlated with the chromatographic homogeneity of guanine aminohydrolase, purified in Sephadex G-100, suggests that the four molecular forms of the native enzyme may be considered as isozymes.
Mechanical impedance of a piano soundboard (1998)

An experimental study of the mechanical impedance Z of a piano soundboard in the frequency range ∼50–104 Hz is reported. The results differ significantly from the behavior reported by Wogram above a few kHz, but are consistent with the measurements of Conklin. The data presented here are also in good agreement with the predictions of our recent numerical calculations. Those calculations found that the soundboard ribs have an important effect on the frequency dependence of Z above a few kHz, and our measurements confirm that prediction.
Fast Determination of Arsenic Species and Total Arsenic in Urine by HPLC-ICP-MS: Concentration Ranges for Unexposed German Inhabitants and Clinical Case Studies (2008)

A fast and reliable high-pressure liquid chromatography (HPLC)-inductively coupled plasma-mass spectrometry (ICP-MS) routine method was developed for the determination of inorganic arsenic [As(III) and As(V)], organic monomethylarsonate [MMA(V)], dimethylarsinate [DMA(V)], and arsenobetaine (As-B) in human urine. The complete method validation is described, including internal and external quality assurance. Limits of quantification for the As species are 0.1 microg/L, which is sufficient to determine background concentrations of the arsenic species in human urine. Additionally, total As in all urine samples was determined by conventional ICP-MS. Mean concentrations for 82 non-exposed inhabitants from northern Germany are 12.7, 5.9, 4.0, 0.23, 0.52, and 0.17 microg/L for total As, As-B, DMA(V), As(III), MMA(V), and As(V), respectively. Approximately 15% of the total As was not identified by the anion exchange HPLC-ICP-MS method, and could be other As metabolites in urine. Two case studies underline the need for As speciation, especially when total urinary arsenic concentrations are elevated. In the first case, we investigated the effect of seafood consumption on the concentration of different arsenic species in urine for different persons. A maximum enhancement of total As from 1 up to 2,200 microg/L (2,000 microg/L for As-B) was observed after a normal fish meal. The second case describes the exposure of a 7-year-old child to As(III) by inhalation of calcium arsenite powder. Five hours after exposure, the concentrations in the child's urine for As-B, DMA(V), As(III), MMA(V), and As(V) were < 0.1, 189, 304, 229, and 27 microg/L, respectively, and these concentrations were reduced to normal background values after 4 days.
Efficient PbSe Colloidal Quantum Dot Solar Cells Using SnO2 as a Buffer Layer (2019)

PbSe colloidal quantum dots (CQDs) are widely used in solar cells because of their tunable band gap, solution processability, and efficient multiple exciton generation effect. The most efficient PbSe CQD solar cells use high-temperature-processed ZnO as the electron transport layer (ETL), limiting their applications in flexible photovoltaics. Currently, low-temperature solution-processed SnO<sub>2</sub> has been demonstrated as an efficient ETL for high-efficient PbS CQD and perovskite solar cells because of less parasitic light absorption and higher electron mobility. Herein, we introduce low-temperature solution-processed SnO<sub>2</sub> as ETL for PbSe CQD solar cells, and fabricate the PbSe CQD absorber layer with a one-step spin-coating method. The champion device with the structure of FTO (SnO<sub>2</sub>:F)/SnO<sub>2</sub>/PbSe-PbI<sub>2</sub>/PbS-EDT (1,2-ethanedithiol)/Au achieves a high open-circuit voltage of 577.1 mV, a short-circuit current density of 24.87 mA cm<sup>-2</sup>, a fill factor of 67%, and an impressive power conversion efficiency of 9.67%. Our results pave the way for the development of low-temperature flexible PbSe CQD solar cells.
Technical overview of VP8, an open source video codec for the web (2011)

VP8 is an open source video compression format supported by a consortium of technology companies. This paper provides a technical overview of the format, with an emphasis on its unique features. The paper also discusses how these features benefit VP8 in achieving high compression efficiency and low decoding complexity at the same time.
Insulin-releasing concentrations of D-fructose lower ATP, ADP and ATP/ADP ratio in rat pancreatic islets (2004)

info:eu-repo/semantics/published