gebhart/patrepeval huggingface dataset:
3D graphene supported MoO<sub>2</sub> for high performance binder-free lithium ion battery (2014)

In this work, we report the synthesis of MoO2 nanoparticles grown on three dimensional graphene (3DG) via the reduction of α-MoO3 nanobelts through a facile chemical vapor deposition (CVD) approach under argon protection gas environment. In this synthesis approach, the presence of hydrophobic 3DG promoted the Volmer-Weber growth of MoO2 nanoparticles (30-60 nm). The as-prepared MoO2-3DG nanocomposite was directly used as a binder-free anode electrode for lithium ion batteries (LIBs) without additives and exhibited excellent electrochemical performance. It delivered high reversible capacities of 975.4 mA h g(-1) and 537.3 mA h g(-1) at the current densities of 50 and 1000 mA g(-1), respectively. Moreover, the electrode also showed an increased capacity from 763.7 mA h g(-1) to 986.9 mA h g(-1) after 150 discharge and charge cycles at a current density of 200 mA g(-1). The enhanced electrochemical performance of MoO2-3DG nanocomposite electrode may be attributed to the synergistic effects of MoO2 nanoparticles and 3DG layers. This facile CVD synthesis process presents a feasible route for large-scale production of high performance, environmentally friendly electrode. In addition, this process also has the potential of being utilized in other materials for energy storage devices application.
Radiochemical separations by adsorption on manganese dioxide (1967)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRadiochemical separations by adsorption on manganese dioxideCarla. Bigliocca, Francesco. Girardi, Jules. Pauly, Enrico. Sabbioni, Sandro. Meloni, and Augusto. ProvasoliCite this: Anal. Chem. 1967, 39, 13, 1634–1639Publication Date (Print):November 1, 1967Publication History Published online1 May 2002Published inissue 1 November 1967https://doi.org/10.1021/ac50156a040Request reuse permissionsArticle Views136Altmetric-Citations70LEARN 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 InReddit PDF (646 KB) Get e-Alertsclose Get e-Alerts
Statement : 당뇨병성 족부질환의 과거와 현재 (2011)

Diabetic foot is one of the most serious complications of diabetes, and is associated with significant portions of admission, medical cost, disability and mortality in diabetic patients. According to a recent report from the Korean Diabetes Association Basic Statistics Research Task Force Team, 1.2% of Korean diabetic patients had diabetic foot, representing a decrease since 1980. The age at amputation increased since 1980, from 60 to 70 years of age, while the mortality rate decreased due to advances of therapeutic technology. Further epidemiologic studies are required to obtain current data regarding incidence, amputation rates, and mortality, and to identify risk factors and new therapeutic modalities in diabetic foot. (J Korean Diabetes 2011;12:69-71)
Identification of the domains required for direct interaction of the helicase-like and polymerase-like RNA replication proteins of brome mosaic virus (1992)

Brome mosaic virus is a positive-strand RNA virus whose RNA replication requires viral protein 1a, which has putative helicase and capping functions, and 2a, which has putative polymerase function. Since domains of related sequence are conserved in a wide range of plus-strand RNA viruses, analysis of 1a and 2a function should have applicability to many other viruses. We have recently demonstrated that 1a and 2a form a complex in vivo and in vitro. Using immune coprecipitation and mutant polypeptides made in reticulocyte lysates, we have now mapped both the 1a and 2a domains necessary for complex formation. The sequences needed to bind 2a map to the carboxy-terminal helicase-like domain of 1a. Truncated polypeptides containing this domain were able to bind to 2a, while several small insertions in the helicase-like domain disrupted binding. The sequence required for binding 1a lies within a 115-residue subset of the 2a N-terminal segment preceding the polymerase-like domain. Truncations or fusion polypeptides containing this segment can bind 1a. We also determined that highly purified 2a protein made in insect cells can form a complex with highly purified 1a helicase-like domain made in Escherichia coli, suggesting that no other factor is required to mediate 1a-2a interaction. Previous genetic analyses of 1a and 2a are consistent with this mapping and show that the newly defined 1a and 2a binding regions are required for RNA synthesis. The locations of these interacting regions are discussed with regard to models of viral replication and the evolution of positive-strand RNA virus genomes.
Balanced Dual Gate GaAs FET Frequency Doublers (2005)

A new technique for broadband microwave power generation is presented: The balanced dual gate MESFET frequency doubler. Design and results for 18-26.5 GHz and 4-23 GHz doublers are presented.
Concurrent Binding of Anti-EphA3 Antibody and Ephrin-A5 Amplifies EphA3 Signaling and Downstream Responses: Potential as EphA3-Specific Tumor-Targeting Reagents (2005)

The Eph receptor tyrosine kinases and their membrane-bound ephrin ligands form a unique cell-cell contact-mediated system for controlling cell localization and organization. Their high expression in a wide variety of human tumors indicates a role in tumor progression, and relatively low Eph and ephrin levels in normal tissues make these proteins potential targets for anticancer therapies. The monoclonal antibody IIIA4, previously used to isolate EphA3, binds with subnanomolar affinity to a conformation-specific epitope within the ephrin-binding domain that is closely adjacent to the "low-affinity" ephrin-A5 heterotetramerization site. We show that similar to ephrin-A5, preclustered IIIA4 effectively triggers EphA3 activation, contraction of the cytoskeleton, and cell rounding. BIAcore analysis, immunoblot, and confocal microscopy of wild-type and mutant EphA3 with compromised ephrin-A5 or IIIA4-binding capacities indicate that IIIA4 binding triggers an EphA3 conformation which is permissive for the assembly of EphA3/ephrin-A5-type signaling clusters. Furthermore, unclustered IIIA4 and ephrin-A5 Fc applied in combination initiate greatly enhanced EphA3 signaling. Radiometal conjugates of ephrin-A5 and IIIA4 retain their affinity, and in mouse xenografts localize to, and are internalized rapidly into EphA3-positive, human tumors. These findings show the biological importance of EphA3/ephrin-A5 interactions and that ephrin-A5 and IIIA4 have great potential as tumor targeting reagents.
Narrow Line Photoassociation in an Optical Lattice (2006)

With ultracold 88Sr in a 1D magic wavelength optical lattice, we performed narrow-line photoassociation spectroscopy near the 1S0 - 3P1 intercombination transition. Nine least-bound vibrational molecular levels associated with the long-range 0u and 1u potential energy surfaces were measured and identified. A simple theoretical model accurately describes the level positions and treats the effects of the lattice confinement on the line shapes. The measured resonance strengths show that optical tuning of the ground state scattering length should be possible without significant atom loss.
Software failure analysis in requirement phase (2012)

Software integrity is of prime concern in today's computerized world. Software failure makes the development of fault tolerant software system, a matter of concern. Failure Modes and Effects Analysis (FMEA) and Fault Tree Analysis (FTA) are traditional techniques that have been used to improve the reliability of mechanical systems. In this paper we propose a formalized approach to find vulnerable failure modes of software systems by synthesizing use case specifications with integrated technique of Software FMEA and Software FTA. We demonstrate the applicability of the approach further, using a case study.
Physicochemical Properties and Bioactivity of Fungal Chitin and Chitosan (2005)

Chitinous material was extracted from mycelia of Aspergillus niger and Mucor rouxii grown in yeast peptone dextrose broth for 15 and 21 days, respectively. The extracted material was characterized for purity, degree of acetylation, and crystallinity and tested for antibacterial and eliciting properties. The maximum glucosamine level determined in the mycelium of A. niger was 11.10% dw and in the mycelium of M. rouxii was 20.13% dw. On the basis of the stepwise extraction of freeze-dried mycelia, it appeared that M. rouxii mycelia contained both chitin and chitosan, whereas A. niger contained only chitin. The yields of crude chitin from A. niger and M. rouxii were 24.01 and 13.25%, respectively, and the yield of chitosan from M. rouxii was 12.49%. Significant amounts (7.42-39.81%) of glucan were associated with chitinous compounds from both species and could not be eliminated by the extraction method used. The degrees of acetylation were determined to be 76.53 and 50.07% for chitin from A. niger and M. rouxii, respectively, and 19.5% for M. rouxii chitosan. The crystallinity of fungal chitin and chitosan was estimated to be less intense than in corresponding materials from shrimp shells. The extracted chitin and chitosan in a concentration of 0.1% reduced Salmonella Typhimurium DT104 2576 counts by 0.5-1.5 logs during a 4 day incubation in tryptic soy broth at 25 degrees C. Furthermore, all tested chitinous materials from fungal sources significantly reduced lesions caused by Botrytis cinerea and Penicillium expansum in harvested apples.
A Convenient Algorithm for Drawing a Simple Random Sample (1983)

A convenient one‐pass algorithm for drawing a simple random sample without replacement of size n from a population of N members, when N is initially unknown, is presented. Moreover, even when N is known, this algorithm appears to be more efficient than previously suggested algorithms when the entire population is stored in the fast memory of the computer. Applications to sampling from a computer file and to linear programming are briefly indicated.
Finite element modelling of electromagnetic fields using different types of variables and boundary conditions (1992)

The authors calculate the precision of the determinations of the magnetic field and current in a finite-element method when varying the size of the mesh, with two different types of boundary conditions (given electric field or given magnetic field) and three types of unknowns (nodal variables, one or two variables per edge). Precision for the determination of the current is shown to depend little on the types of variables and boundary conditions. One variable per edge is the better one. On the contrary, the precision for the magnetic field is greatly dependent on the types of variables and boundary conditions. One variable per edge gives very bad results. Nodal variables with h boundary conditions give the smallest errors; with e boundary conditions, two variables per edge is the better choice.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A highly secreted sulphamidase engineered to cross the blood‐brain barrier corrects brain lesions of mice with mucopolysaccharidoses type IIIA (2013)

Mucopolysaccharidoses type IIIA (MPS-IIIA) is a neurodegenerative lysosomal storage disorder (LSD) caused by inherited defects of the sulphamidase gene. Here, we used a systemic gene transfer approach to demonstrate the therapeutic efficacy of a chimeric sulphamidase, which was engineered by adding the signal peptide (sp) from the highly secreted iduronate-2-sulphatase (IDS) and the blood-brain barrier (BBB)-binding domain (BD) from the Apolipoprotein B (ApoB-BD). A single intravascular administration of AAV2/8 carrying the modified sulphamidase was performed in adult MPS-IIIA mice in order to target the liver and convert it to a factory organ for sustained systemic release of the modified sulphamidase. We showed that while the IDS sp replacement results in increased enzyme secretion, the addition of the ApoB-BD allows efficient BBB transcytosis and restoration of sulphamidase activity in the brain of treated mice. This, in turn, resulted in an overall improvement of brain pathology and recovery of a normal behavioural phenotype. Our results provide a novel feasible strategy to develop minimally invasive therapies for the treatment of brain pathology in MPS-IIIA and other neurodegenerative LSDs.
Fast Setting Calcium Phosphate Cement-Chitosan Composite: Mechanical Properties and Dissolution Rates (2007)

Calcium phosphate cement (CPC) can self-harden in vivo to form hydroxyapatite (HA) with excellent osteoconductivity. In recent studies, CPC-chitosan composites are developed with high mechanical strength and washout resistance. The objectives of the present study are to optimize the setting time and mechanical properties of a CPC-chitosan composite by tailoring the chitosan content, and to evaluate the bioresorbability by using an in vitro dissolution model. Six chitosan mass fractions are tested: 0, 10, 15, 20, 25, and 30%. Specimens are immersed in solutions with pH ranging from 3.5 to 5 to simulate the acidic environments produced by osteoclasts in vivo. Dissolution is measured as the fraction of mass loss versus immersion time from 7d to 28d. The CPC-chitosan composite with 20% by mass chitosan has a setting time (mean+/-SD; n=4) of 13 1 min, significantly less than 87 7 min for CPC control without chitosan (p<0.05). The composite flexural strength (mean+/-SD; n 1/4 6) was 14 2 MPa, significantly higher than 4 1 MPa of CPC control (p<0.05). At an intermediate pH of 4.5, the fraction of mass loss for CPC with 20% chitosan and CPC control without chitosan are not significantly different (p>0.1). The dissolution rates (fraction of mass loss per day,%/d) were 1.05 for CPC control and 1.08 for CPC-chitosan. In summary, a CPC-chitosan composite is developed with fast-setting and a flexural strength three-fold of that of CPC control without chitosan. Both materials are soluble in acidic environments, indicating that adding chitosan did not compromise the bioresorbability of CPC. The strong and resorbable CPC-chitosan composite may be useful in moderate stress-bearing craniofacial and orthopedic repairs.
Reconstruction of discrete-time signals from a subset of weighted DFT outputs (2005)

An algorithm is presented for combining the output of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</tex> DFT bins to produce a single discrete-time signal, where <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r < n</tex> , the DFT size. The technique described compensates for the effect of any weighting function used in the original DFT, as well as any DFT overlap fraction. The output sampling rate can be selected appropriate to the bandwidth of the resulting signal. The procedure reconstructs the minimum-energy signal which would produce the observed <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</tex> DFT outputs, knowing the weighting function and overlap fraction. Implementation of the algorithm requires multiplication of a complex <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</tex> -vector (the bin outputs) by an rxr complex matrix, to produce <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</tex> discrete-time samples for a single input DFT. This multiplication is performed on successive DFT's to produce the output sequence, with sampling rate <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">r</tex> times that of each DFT bin.
Oscillation of delay difference equations (1994)

Consider the delay difference equation where {pn } is a sequence of nonnegative real numbers and k is a positive integer. We obtain respectively sufficient conditions for all solutions of Eq. (1) to oscillate and the existcnce of a nonoscillatory solution of Eq. (1). Our results improve the known results in [1,3] and also solve an open problem in [4]. The oscillation of a discrete delay logistic equation is also studied.
Passaging of a Newcastle disease virus pigeon variant in chickens results in selection of viruses with mutations in the polymerase complex enhancing virus replication and virulence (2010)

Some Newcastle disease virus (NDV) variants isolated from pigeons (pigeon paramyxovirus type 1; PPMV-1) do not show their full virulence potential for domestic chickens but may become virulent upon spread in these animals. In this study we examined the molecular changes responsible for this gain of virulence by passaging a low-pathogenic PPMV-1 isolate in chickens. Complete genome sequencing of virus obtained after 1, 3 and 5 passages showed the increase in virulence was not accompanied by changes in the fusion protein--a well known virulence determinant of NDV--but by mutations in the L and P replication proteins. The effect of these mutations on virulence was confirmed by means of reverse genetics using an infectious cDNA clone. Acquisition of three amino acid mutations, two in the L protein and one in the P protein, significantly increased virulence as determined by intracerebral pathogenicity index tests in day-old chickens. The mutations enhanced virus replication in vitro and in vivo and increased the plaque size in infected cell culture monolayers. Furthermore, they increased the activity of the viral replication complex as determined by an in vitro minigenome replication assay. Our data demonstrate that PPMV-1 replication in chickens results in mutations in the polymerase complex rather than the viral fusion protein, and that the virulence level of pigeon paramyxoviruses is directly related to the activity of the viral replication complex.
Evaluation of the Vulnerability of Speaker Verification to Synthetic Speech (2010)

In this paper, we evaluate the vulnerability of a speaker verification (SV) system to synthetic speech. Although this problem was first examined over a decade ago, dramatic improvements in both SV and speech synthesis have renewed interest in this problem. We use a HMM-based speech synthesizer, which creates synthetic speech for a targeted speaker through adaptation of a background model and a GMM-UBM-based SV system. Using 283 speakers from the Wall-Street Journal (WSJ) corpus, our SV system has a 0.4 % EER. When the system is tested with synthetic speech generated from speaker models derived from the WSJ journal corpus, 90 % of the matched claims are accepted. This result suggests a possible vulnerability in SV systems to synthetic speech. In order to detect synthetic speech prior to recognition, we investigate the use of an automatic speech recognizer (ASR), dynamic-timewarping (DTW) distance of mel-frequency cepstral coefficients (MFCC), and previously-proposed average inter-frame difference of log-likelihood (IFDLL). Overall, while SV systems have impressive accuracy, even with the proposed detector, high-quality synthetic speech can lead to an unacceptably high acceptance rate of synthetic speakers. 1.
Concomitant gradient field effects in balanced steady‐state free precession (2007)

Linear magnetic field gradients spatially encode the image information in MRI. Concomitant gradients are undesired magnetic fields that accompany the desired gradients and occur as an unavoidable consequence of Maxwell's equations. These concomitant gradients result in undesired phase accumulation during MRI scans. Balanced steady-state free precession (bSSFP) is a rapid imaging method that is known to suffer from signal dropout from off-resonance phase accrual. In this work it is shown that concomitant gradient phase accrual can induce signal dropout in bSSFP. The spatial variation of the concomitant phase is explored and shown to be a function of gradient strength, slice orientation, phase-encoding (PE) direction, distance from isocenter, and main field strength. The effect on the imaging signal level was simulated and then verified in phantom and in vivo experiments. The nearest signal-loss artifacts occurred in scans that were offset from isocenter along the z direction with a transverse readout. Methods for eliminating these artifacts, such as applying compensatory frequency or shim offsets, are demonstrated. Concomitant gradient artifacts can occur at 1.5T, particularly in high-resolution scans or with additional main field inhomogeneity. These artifacts will occur closer to isocenter at field strengths below 1.5T because concomitant gradients are inversely proportional to the main field strength.
Atypical Lymphocytosis in Babesiosis (1995)

Journal Article Atypical Lymphocytosis in Babesiosis Get access G. S. Rosenbaum, G. S. Rosenbaum Southampton Hospital, Southampton; Infectious Disease Division, Winthrop-University Hospital, Mineola; and SUNY School of Medicine, Stony Brook, New York Search for other works by this author on: Oxford Academic PubMed Google Scholar D. H. Johnson, D. H. Johnson Southampton Hospital, Southampton; Infectious Disease Division, Winthrop-University Hospital, Mineola; and SUNY School of Medicine, Stony Brook, New York Search for other works by this author on: Oxford Academic PubMed Google Scholar B. A. Cunha B. A. Cunha Southampton Hospital, Southampton; Infectious Disease Division, Winthrop-University Hospital, Mineola; and SUNY School of Medicine, Stony Brook, New York Reprints or correspondence: Dr. B. A. Cunha, Infectious Disease Division, Winthrop-University Hospital, 259 First Street, Mineola, New York 11501. Search for other works by this author on: Oxford Academic PubMed Google Scholar Clinical Infectious Diseases, Volume 20, Issue 1, January 1995, Pages 203–204, https://doi.org/10.1093/clinids/20.1.203 Published: 01 January 1995
Developmental Stage, Phenotype, and Migration Distinguish Naive- and Effector/Memory-like CD4+ Regulatory T Cells (2004)

Regulatory T cells (Tregs) fulfill a central role in immune regulation. We reported previously that the integrin alphaEbeta7 discriminates distinct subsets of murine CD4+ regulatory T cells. Use of this marker has now helped to unravel a fundamental dichotomy among regulatory T cells. alphaE-CD25+ cells expressed L-selectin and CCR7, enabling recirculation through lymphoid tissues. In contrast, alphaE -positive subsets (CD25+ and CD25-) displayed an effector/memory phenotype expressing high levels of E/P-selectin-binding ligands, multiple adhesion molecules as well as receptors for inflammatory chemokines, allowing efficient migration into inflamed sites. Accordingly, alphaE -expressing cells were found to be the most potent suppressors of inflammatory processes in disease models such as antigen-induced arthritis.