gebhart/patrepeval huggingface dataset:
Systematic Extraction Method for the Determination of HBT Temperature-Dependent DC Model Parameters (2007)

This paper presents a systematic parameter extraction method for an HBT temperature-dependant equivalent-circuit DC model. A reliable procedure was developed for determining the HBT thermal resistance, requiring only forward Gummel data at different temperatures and collector-emitter bias voltages. The extraction method was applied to predict the DC characteristics of a 2x25 μm 2 emitter-area
Platelet-derived growth factor (2013)

Platelet-derived growth factor (PDGF) constitutes a family of disulfide-linked dimeric growth factors that promote cell growth and migration by activation of tyrosine kinase PDGFα- and β-receptors (1). PDGFs act predominantly on mesenchymal cells, such as fibroblasts, pericytes, and smooth muscle cells, and are also potent regulators of glial cells. In the context of tumor biology, PDGF isoforms act as autocrine factors for malignant cells, and as stimulators of fibroblasts and pericytes in the tumor stroma. Clinical studies have validated PDGF receptors, expressed on malignant cells or on cells of the tumor stroma, as relevant cancer drug targets (2).
Predicting the performance of virtual reality video streaming in mobile networks (2018)

The demand of Virtual Reality (VR) video streaming to mobile devices is booming, as VR becomes accessible to the general public. However, the variability of conditions of mobile networks affects the perception of this type of high-bandwidth-demanding services in unexpected ways. In this situation, there is a need for novel performance assessment models fit to the new VR applications. In this paper, we present PERCEIVE, a two-stage method for predicting the perceived quality of adaptive VR videos when streamed through mobile networks. By means of machine learning techniques, our approach is able to first predict adaptive VR video playout performance, using network Quality of Service (QoS) indicators as predictors. In a second stage, it employs the predicted VR video playout performance metrics to model and estimate end-user perceived quality. The evaluation of PERCEIVE has been performed considering a real-world environment, in which VR videos are streamed while subjected to LTE/4G network condition. The accuracy of PERCEIVE has been assessed by means of the residual error between predicted and measured values. Our approach predicts the different performance metrics of the VR playout with an average prediction error lower than 3.7% and estimates the perceived quality with a prediction error lower than 4% for over 90% of all the tested cases. Moreover, it allows us to pinpoint the QoS conditions that affect adaptive VR streaming services the most.
Palladium‐Catalyzed Synthesis of Cyclic Amidines and Imidates. (2004)

Abstract For Abstract see ChemInform Abstract in Full Text.
Free energy coding (2002)

We introduce a new approach to the problem of optimal compression when a source code produces multiple codewords for a given symbol. It may seem that the most sensible codeword to use in this case is the shortest one. However, in the proposed free energy approach, random codeword selection yields an effective codeword length that can be less than the shortest codeword length. If the random choices are Boltzmann distributed, the effective length is optimal for the given source code. The expectation-maximization parameter estimation algorithms minimize this effective codeword length. We illustrate the performance of free energy coding on a simple problem where a compression factor of two is gained by using the new method.
ChemInform Abstract: SYNTHESIS, PHYSICAL PROPERTIES, AND CRYSTAL STRUCTURE OF THE CUBANE COMPOUND BIS(μ‐ACETATO)‐TETRA‐μ‐METHOXO‐BIS(μ‐(2,5‐DIMETHYL‐2,5‐DIISOCYANOHEXAN# E))‐TETRANICKEL(II) TETRAPHENYLBORATE (1981)

Abstract Die Reaktion von Ni(II)‐acetat mit 2,5‐Dimethyl‐2,5‐diisocyanohexan in MeOH und nachfolgende Zugabe von Na[BPh4] liefert mit 87% Ausb. den Tite1komplex, der mit Z=4 in der Raumgruppe C2/c kristallisiert.
Bananas Enough for Time Travel? (1997)

This paper argues that the most famous objection to backward time travel can carry no weight. In its classic form, the objection is that backward time travel entails the occurrence of impossible things, such as auto-infanticide—and hence is itself impossible. David Lewis has rebutted the classic version of the objection: auto-infanticide is prevented by coincidences, such as time travellers slipping on banana peels as they attempt to murder their younger selves. I focus on Paul Horwich‘s more recent version of the objection, according to which backward time travel entails not impossible things, but improbable ones—such as the string of slips on banana peels that would be required to stop a determined auto-infanticidal maniac from murdering her younger self—and hence is itself highly improbable. I argue that backward time travel does not entail unusual numbers of coincidences; and that, even if it did, that would not render its occurrence unlikely.
Use of Vaporizing Foil Actuator for Impact Welding of Aluminum Alloy Sheets with Steel and Magnesium Alloys (2015)

This chapter contains sections titled: Introduction Method Results Discussion Conclusions and Future Work Acknowledgement
Probing platelet activity before and after COVID-19 vaccinations by image-based profiling and temporal monitoring (2022)

A global concern has been raised about extremely rare, but serious cases of a thrombotic disorder, known as COVID-19 vaccine-induced immune thrombotic thrombocytopenia (VITT), associated with the Oxford-AstraZeneca and Johnson &amp; Johnson / Janssen COVID-19 vaccines. While the pathogenesis of VITT remains not fully understood, a currently accepted theory is that the adenoviral vector vaccines produce antibodies that recognize platelet factor 4 (PF4), leading to platelet activation and aggregation, followed by thromboembolic complications. Therefore, the recommended methods of evaluation for VITT include complete blood count, anti-PF4-heparin antibody enzyme-linked immunosorbent assay, coagulation tests, and medical imaging. However, none of these methods can directly probe platelet activity (i.e., platelet activation and aggregation) and study potential non-PF4 factors for increased platelet activity. Here we report a method for directly probing vaccine-induced platelet activity and hence assessing the risk of VITT at its early stage. Specifically, we used the method to demonstrate image-based single-cell profiling and temporal monitoring of platelet aggregates (thrombosis risk) in the blood of healthy human subjects before and after receiving multiple Pfizer-BioNTech vaccine shots in a time span of nearly a year. Results show that the average concentration of platelet aggregates in healthy subjects after the first, second, and third vaccinations is comparable to that before the first vaccination and is lower than that in COVID-19 patients, indicating that the vaccine-induced platelet activity and potential risk of VITT in the healthy subjects were found to be low.
AXIAL COORDINATION IN COBALT(II) COMPLEXES OF TWO SYNTHETIC MACROCYCLIC LIGANDS CONTAINING THE BIDENTATE α-DIIMINE GROUP (1980)

Abstract In order to elucidate the nature of axial coordination in synthetic macrocyclic complexes of cobalt(II), we have synthesized two new series of such complexes, containing the macrocycles Me4 [14] 1,3,8,10-tetraeneN4 and Me2 [14] 1,3-dieneN4, by direct isolation of the Co(II) complexes from the condensation reaction mixtures. The complexes are formally five-coordinate in the solid state, but exhibit a tendency toward six-coordination in the presence of potential axial ligands, as demonstrated by electronic spectral and electron paramagnetic resonance studies. The Co(tetraeneN4)+2 and Co(dieneN4)+2 species are compared with the previously studied Co(Me6 [14] 4, 11-dieneN4)+2 moiety with respect to axial coordination. It is concluded that the presence of methyl substituents on the six-membered chelate rings of the latter complex have a marked effect on its tendency to coordinate axial ligands.
A Field Test of the Induced Polarization Method in Aarhus County, Denmark (2000)

PreviousNext No AccessSymposium on the Application of Geophysics to Engineering and Environmental Problems 2000A Field Test of the Induced Polarization Method in Aarhus County, DenmarkAuthors: Stewart K. SandbergLee SlaterKurt SørensenEsben AukenStewart K. SandbergDepartment of Geosciences, University of Southern Maine, Gorham, ME 04038, USA, Lee SlaterDepartment of Geosciences, University of Missouri — Kansas City, 5100 Rockhill Road, Kansas City, MO 64110, USA, Kurt SørensenGeophysical Laboratory, Department of Earth Sciences, Aarhus University, Aarhus, Denmark, and Esben AukenGeophysical Laboratory, Department of Earth Sciences, Aarhus University, Aarhus, Denmarkhttps://doi.org/10.4133/1.2922713 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Introductory paragraph for this paper is available only in the PDF and GZipped PS filesPermalink: https://doi.org/10.4133/1.2922713FiguresReferencesRelatedDetails Symposium on the Application of Geophysics to Engineering and Environmental Problems 2000ISSN (online):1554-8015Copyright: 2000 Pages: 1255 publication data© 2000 Copyright © 2000 The Environmental and Engineering Geophysical SocietyPublisher:Environmental & Engineering Geophysical Society HistoryPublished: 30 Sep 2008 CITATION INFORMATION Stewart K. Sandberg, Lee Slater, Kurt Sørensen, and Esben Auken, (2000), "A Field Test of the Induced Polarization Method in Aarhus County, Denmark," Symposium on the Application of Geophysics to Engineering and Environmental Problems Proceedings : 1095-1104. https://doi.org/10.4133/1.2922713 Plain-Language Summary PDF DownloadLoading ...
Luminescent Quantum Dots Stabilized by N-Heterocyclic Carbene Polymer Ligands (2021)

We have tested the ability of N-heterocyclic carbene (NHC)-modified ligands to coordinate and stabilize luminescent CdSe-ZnS core-shell quantum dot (QD) dispersions in hydrophilic media. In particular, we probed the effects of ligand structure and coordination number on the coating affinity to the nanocrystals. We find that such NHC-based ligands rapidly coordinate onto the QDs (requiring ∼5-10 min of reaction time), which reflects the soft Lewis base nature of the NHC groups, with its two electrons sharing capacity. Removal of the hydrophobic cap and promotion of carbene-driven coordination on the nanocrystals have been verified by <sup>1</sup>H NMR spectroscopy, while <sup>13</sup>C NMR was used to identify the formation of carbene-Zn complexes. The newly coated QD dispersions exhibit great long-term colloidal stability over a wide range of conditions. Additionally, we find that coordination onto the QD surfaces affects the optical and spectroscopic properties of the nanocrystals. These include a size-dependent red-shift of the absorption and fluorescence spectra and a pronounced increase in the measured fluorescence intensity when the samples are stored under white light exposure compared to those stored in the dark.
Physician Estimations of the Risk of Gastrointestinal Stromal Tumor Recurrence—Not Accurate Enough? (2015)

Our website uses cookies to enhance your experience. By continuing to use our site, or clicking "Continue," you are agreeing to our Cookie Policy | Continue JAMA Oncology HomeNew OnlineCurrent IssueFor Authors Podcast Publications JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry (1919-1959) JN Learning / CMESubscribeJobsInstitutions / LibrariansReprints & Permissions Terms of Use | Privacy Policy | Accessibility Statement 2023 American Medical Association. All Rights Reserved Search All JAMA JAMA Network Open JAMA Cardiology JAMA Dermatology JAMA Forum Archive JAMA Health Forum JAMA Internal Medicine JAMA Neurology JAMA Oncology JAMA Ophthalmology JAMA Otolaryngology–Head & Neck Surgery JAMA Pediatrics JAMA Psychiatry JAMA Surgery Archives of Neurology & Psychiatry Input Search Term Sign In Individual Sign In Sign inCreate an Account Access through your institution Sign In Purchase Options: Buy this article Rent this article Subscribe to the JAMA Oncology journal
Learning in Memristive Neural Network Architectures Using Analog Backpropagation Circuits (2018)

The on-chip implementation of learning algorithms would speed up the training of neural networks in crossbar arrays. The circuit level design and implementation of a back-propagation algorithm using gradient descent operation for neural network architectures is an open problem. In this paper, we propose analog backpropagation learning circuits for various memristive learning architectures, such as deep neural network, binary neural network, multiple neural network, hierarchical temporal memory, and long short-term memory. The circuit design and verification are done using TSMC 180-nm CMOS process models and TiO2-based memristor models. The application level validations of the system are done using XOR problem, MNIST character, and Yale face image databases.
Effect of LEO Exposure on Aromatic Polymers Containing Phenylphosphine Oxide Groups (2007)

As part of the Materials on The International Space Station Experiment (MISSE), aromatic polymers containing phenylphosphine oxide groups were exposed to low Earth orbit (LEO) for approximately 4 years. All of the aromatic polymers containing phenylphosphine oxide groups survived the exposure despite the high fluence of atomic oxygen that completely eroded other polymer films such as Kapton and Mylar of comparable or greater thickness. The samples consisted of a colorless polyimide film and a poly(arylene ether benzimidazole) film and thread. The samples were characterized for changes in physical properties, thermal/optical properties (i.e. solar absorptivity and thermal emissivity), surface chemistry (X-ray photoelectron spectroscopy), and surface topography (atomic force microscopy). The data from the polymer samples on MISSE were compared to samples from the same batch of material stored under ambient conditions on Earth. In addition, comparisons were made between the MISSE samples and those subjected to shorter term space flight exposures. The results of these analyses will be presented.
In Situ Mechanochemical Modulation of Carbon Nanotube Forest Growth (2018)

Ordered synthesis of one-dimensional nanostructures, such as carbon nanotubes (CNTs), involves competition between the growth kinetics of individual structures, their physical entanglement, and intermolecular forces that cause coupling of structures in close proximity. Specifically, CNT synthesis by chemical vapor deposition can directly produce films and fibers by providing CNT growth sites in close proximity such that the CNTs self-align into macroscopic assemblies. Because CNTs are mechanically coupled during these processes, the question arises as to whether or not mechanical forces intrinsic to the formation of CNT ensembles influence the growth kinetics and quality of CNTs, as can be expected from fundamental theories of mechanochemistry. Here, we study how mechanical forces influence CNT growth by applying controlled compression to CNT forests in situ; and relate the outcomes quantitatively to the CNT morphology and lengthening rate. We find that applied forces inhibit the self-organization of CNTs into a forest and accelerate the termination of collective growth. By correlating in situ kinetics measurements with spatial mapping of CNT orientation and density by X-ray scattering, we find that the average growth rate of individual CNTs is also mechanically modulated; specifically, a 100-fold increase in force causes a 4-fold decrease in average CNT lengthening rate. We attribute the slower growth kinetics to a stress-dependent increase of 0.02–0.16 eV in the effective activation energy for CNT growth. Via finite element modeling, we conclude that the force magnitudes that cause remodeling of the growing CNT network are less than the average strengths of adhesive contacts between CNTs. Last, we find that CNT growth rate and orientation can respond dynamically to changes in applied force, further demonstrating the mechanochemical nature of CNT growth and suggesting new approaches to control CNT quality and morphology in situ, with general application to other one-dimensional nanostructures.
Abortive cell culture infections of nuclear polyhedrosis viruses as model systems for host specificity. (1992)

Descreve-se a proliferacao do virus e o efeito citopatico numa infeccao abortiva que envolve o virus de poliedrose nuclear de Autographa californica (AcMNPV) e uma linhagem de Bombyx mori. Os resultados indicam que o AcMNPV acarreta efeitos citopaticos (CPE) complexos e raros nas calulas do B. mori. Tal fato envolve a formacao de sacos e protrusoes, alem da hipertrofia e arredondamento do nucleo, normalmente observados em infeccoes produtivas. A infeccao de celulas de B. mori com AcMNPV inativado por raios ultravioleta induz a formacao somente de sacos, o que indica que a expressao genica virial nao e necessaria para este efeito. Nas celulas de B. mori nenhum virus infeccioso e produzido. A microscopia eletronica mostra que somente o estroma virogenico é formado nas celulas de B. mori e nao os virions ou PIBs (corpos de inclusao poliedricos). Detectam-se nucleocapsideos em 20% de celulas infectadas, porem estes sao defectivos. Os resultados sugerem que um componente virial de virus de poliedrose nuclear (NPV) causa efeito citopatico. Este principio tem importantes implicacoes na identificacao de genes virais visando a producao de plantas transgenicas resistentes a insetos-praga.
Processing of lignocellulosic polymer wastes using microwave irradiation (2022)

Lignin and mixed lignocellulosic natural polymer wastes have been accumulated in landfills over the past hundred years. These wastes should be processed to produce added- value chemicals and materials. This mini-review presents a brief literature survey related to state-of-the-art methods developed recently by the world research community to solve the problem of rational conversion of lignocellulosic polymer wastes, including production of hydrogen, synthesis gas, phenols, and monomers. The focus is made on microwave and plasma technologies used for lignocellulosic wastes processing.
Prolonged mitotic arrest triggers partial activation of apoptosis, resulting in DNA damage and p53 induction (2011)

Mitotic arrest induced by antimitotic drugs can cause apoptosis or p53-dependent cell cycle arrest. It can also cause DNA damage, but the relationship between these events has been unclear. Live, single-cell imaging in human cancer cells responding to an antimitotic kinesin-5 inhibitor and additional antimitotic drugs revealed strong induction of p53 after cells slipped from prolonged mitotic arrest into G1. We investigated the cause of this induction. We detected DNA damage late in mitotic arrest and also after slippage. This damage was inhibited by treatment with caspase inhibitors and by stable expression of mutant, noncleavable inhibitor of caspase-activated DNase, which prevents activation of the apoptosis-associated nuclease caspase-activated DNase (CAD). These treatments also inhibited induction of p53 after slippage from prolonged arrest. DNA damage was not due to full apoptosis, since most cytochrome C was still sequestered in mitochondria when damage occurred. We conclude that prolonged mitotic arrest partially activates the apoptotic pathway. This partly activates CAD, causing limited DNA damage and p53 induction after slippage. Increased DNA damage via caspases and CAD may be an important aspect of antimitotic drug action. More speculatively, partial activation of CAD may explain the DNA-damaging effects of diverse cellular stresses that do not immediately trigger apoptosis.
Circulating clonotypic B cells in multiple myeloma and monoclonal gammopathy of undetermined significance (2013)

The B-cell compartment in which multiple myeloma stem cells reside remains unclear. We investigated the potential presence of mature, surface-membrane immunoglobulin-positive B lymphocytes clonally related to the tumor bone marrow plasma cells among different subsets of peripheral blood B cells from ten patients (7 with multiple myeloma and 3 with monoclonal gammopathies of undetermined significance). The presence of clonotypic immunoglobulin heavy chain gene rearrangements was determined in multiple highly-purified fractions of peripheral blood B-lymphocytes including surface-membrane IgM(+) CD27(-) naïve B-lymphocytes, plus surface-membrane IgG(+), IgA(+) and IgM(+) memory CD27(+) B cells, and normal circulating plasma cells, in addition to (mono)clonal plasma cells, by a highly-specific and sensitive allele-specific oligonucleotide polymerase chain reaction directed to the CDR3 sequence of the rearranged IGH gene of tumor plasma cells from individual patients. Our results showed systematic absence of clonotypic rearrangements in all the different B-cell subsets analyzed, including M-component isotype-matched memory B-lymphocytes, at frequencies <0.03 cells/μL (range: 0.0003-0.08 cells/μL); the only exception were the myeloma plasma cells detected and purified from the peripheral blood of four of the seven myeloma patients. These results indicate that circulating B cells from patients with multiple myeloma and monoclonal gammopathies of undetermined significance are usually devoid of clonotypic B cells while the presence of immunophenotypically aberrant myeloma plasma cells in peripheral blood of myeloma patients is a relatively frequent finding.
N,N‐Diphenylpyridin‐4‐amine as a Bipolar Core Structure of High‐Triplet‐Energy Host Materials for Blue Phosphorescent Organic Light‐Emitting Diodes (2012)

Got the blues: High-triplet-energy bipolar host materials based on a bipolar N,N-diphenylpyridin-4-amine (DPPA) core structure were developed for blue phosphorescent organic light-emitting diodes (PHOLEDs). Two DPPA-based host materials (see picture) showed high triplet energy over 2.70 eV and a high quantum efficiency of 15.6 %. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by 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.
Bioresorbable Polylactide Interbody Implants in an Ovine Anterior Cervical Discectomy and Fusion Model (2008)

Interbody fusion was achieved using bioresorbable polylactide implants, with no evidence of implant collapse, extrusion, or adverse tissue response to the material. The use of polylactide as a cervical interbody device appears both safe and effective based on these ACDF animal model results.
Optimization of simultaneous multislice EPI for concurrent functional perfusion and BOLD signal measurements at 7T (2016)

The presented SMS EPI PASL at 7T overcomes current limitations in SNR, temporal resolution, and spatial coverage for functional perfusion and BOLD signal as well as baseline perfusion measurements. Magn Reson Med 78:121-129, 2017. © 2016 The Authors Magnetic Resonance in Medicine published by Wiley Periodicals, Inc. on behalf of International Society for Magnetic Resonance in Medicine. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.