gebhart/patrepeval huggingface dataset:
Role of surface chemistry on the nature of passive oxide film growth on Fe–Cr (low and high) steels at high temperatures (1999)

High temperature materials degradation or protection of Fe–Cr alloys are often related to the nature of their oxide scale formation. Breakdown of passive oxide films leads to localized corrosion. Various alloying elements are often incorporated in these alloys to prevent high temperature oxidation. The addition of selected alloying elements is cumbersome and not always cost effective. In this article, we investigate the role of rare earth oxide coatings on high temperature corrosion prevention of both low and high Cr steel. An in situ high temperature oxidation setup has been built to study the oxidation kinetics of both coated and uncoated low and high Cr steels under ambient pressure and dry air. Reduction in scale growth kinetics is observed in the presence of coating. While scanning electron microscopy and x-ray diffraction are employed to study the structure and morphology of the oxide films, x-ray photoelectron spectroscopy and Auger electron spectroscopy are used to study the surface chemistry of the oxide layer. This article relates some of these data to explain the nature of scale growth kinetics (linear or logarithmic or parabolic) observed in both low and high Cr steels.
Lysine as helix C-capping residue in a synthetic peptide (1997)

The structure of the synthetic peptide CH3CO(Leu-Ser-Leu-Leu-Leu-Ser-Leu)3Lys-NH2 in trifluoroethanol/water 60/40 (volume ratio) was characterized by two-dimensional nmr spectroscopy. The peptide, closely related to the amphiphilic helix models designed by W. F. De-Grado and co-workers to mimic protein ion channels [(1988) Science, Vol. 240, p. 1177-1181], folds into a regular helix spanning residues 1-20. Evidence for a helix C-terminal capping conformation, involving the terminal lysine residue, was observed from Overhauser effects and checked for consistency by restrained molecular dynamics simulations. The side-chain amino group of Lys22 forms a hydrogen bond with the carbonyl of Leu18, and the distorted helical geometry of the terminal dipeptide allows the inclusion of a water bridge between the backbone NH of the Lys22 residue and the carbonyls of Leu19 and Ser20.
Usefulness of recombinant γ-gliadin 1 for identifying patients with celiac disease and monitoring adherence to a gluten-free diet (2015)

rGG1 and its epitope might be useful for identifying patients with CD, monitoring treatment, and studying the pathomechanisms of CD and development of preventive and therapeutic strategies.
CD28 cross-linking augments TCR-mediated signals and costimulates superantigen responses. (1995)

The CD28 molecule expressed on the surface of T cells plays a pivotal role in transducing costimulatory signals necessary for cell activation. CD28 coligation enhances tyrosine phosphorylation and phosphoinositol 3-kinase association in responsive cells. CD28 cross-linking has also been reported to activate inositol phospholipid turnover and to cause release of intracellular calcium. Here we examine the effects of CD28 cross-linking on early activation of protein kinase C (PKC). We have reported recently that either PMA or CD28 cross-linking synergizes with signals delivered by superantigen and cytokines to induce the proliferation of APC-depleted T cells. Unlike PMA, CD28 cross-linking alone failed to induce an increase in membrane-associated PKC activity. However, PKC activation was seen in resting T cells when CD28 was cross-linked in the presence of superantigen plus APC-derived supernatant, which by themselves had no effect on PKC activity. Inhibition of PKC activity using calphostin C blocked the response of pure T cells to superantigen in the presence of either autologous APC, PMA, or CD28 cross-linking. This effect was specific; it was only seen when calphostin C was added within the first hour of stimulation. Assays of [Ca2+]i levels showed that CD28 cross-linking augmented and prolonged the rise in [Ca2+]i induced in T cells by superantigen and APC-derived cytokines. In the presence of superantigen, the proliferative response of T cells costimulated by CD28 cross-linking was cyclosporin A-sensitive, whereas in the presence of PMA, CD28 cross-linking conferred resistance to cyclosporin A. Both the phosphorylation of phospholipase C gamma 1 at tyrosine and the rise in [Ca2+]i induced by CD28 cross-linking in preactivated T cells were blocked by herbimycin A. Herbimycin A treatment also blocked the ability of CD28 cross-linking to induce a rise in [Ca2+]i in resting T cells. We conclude that CD28 costimulatory signals augment superantigen-induced TCR signals by converging onto common TCR effector pathways involving the activation of phospholipase C gamma 1 and PKC and by generating a cyclosporin A-sensitive pathway.
A Compact Dual-Band Antenna Enabled by a Complementary Split-Ring Resonator-Loaded Metasurface (2017)

In this paper, the design of a compact dual-band antenna with operational bands centered at 1.9 and 2.5 GHz is introduced and validated numerically as well as experimentally. The proposed antenna is comprised by placing a monopole feeding antenna above an engineered multilayer metasurface (MS) which functions as an artificial ground plane. Moreover, complementary split-ring resonator structures are incorporated into the multilayer MS design to realize the dual-band operation of the proposed monopole-MS integrated antenna system. Dispersive analysis of the MS unit cell reveals the underlying radiation mechanism of the antenna. It is observed that the designed MS resonates in both frequency bands with a resonance mode pattern resembling that of the TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode of a rectangular patch antenna, thereby yielding a broadside radiation pattern in both bands. The overall footprint of the antenna is only 0.062λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> , where λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> is the free space wavelength at 1.9 GHz. Importantly, by using the proposed artificial ground plane, even with a highly miniaturized form factor, the antenna still maintains a peak gain of above 5 dBi and a front-to-back ratio higher than 6 dB within the two operational bands.
Zooming SlowMo: An Efficient One-Stage Framework for Space-Time Video Super-Resolution (2021)

In this paper, we address the space-time video super-resolution, which aims at generating a high-resolution (HR) slow-motion video from a low-resolution (LR) and low frame rate (LFR) video sequence. A naïve method is to decompose it into two sub-tasks: video frame interpolation (VFI) and video super-resolution (VSR). Nevertheless, temporal interpolation and spatial upscaling are intra-related in this problem. Two-stage approaches cannot fully make use of this natural property. Besides, state-of-the-art VFI or VSR deep networks usually have a large frame reconstruction module in order to obtain high-quality photo-realistic video frames, which makes the two-stage approaches have large models and thus be relatively time-consuming. To overcome the issues, we present a one-stage space-time video super-resolution framework, which can directly reconstruct an HR slow-motion video sequence from an input LR and LFR video. Instead of reconstructing missing LR intermediate frames as VFI models do, we temporally interpolate LR frame features of the missing LR frames capturing local temporal contexts by a feature temporal interpolation module. Extensive experiments on widely used benchmarks demonstrate that the proposed framework not only achieves better qualitative and quantitative performance on both clean and noisy LR frames but also is several times faster than recent state-of-the-art two-stage networks. The source code is released in https://github.com/Mukosame/Zooming-Slow-Mo-CVPR-2020 .
Identificação de bovinos portadores sadios de Babesia spp através da técnica de PCR. (2007)

A Tristeza parasitária bovina (complexo babesiose-anaplasmose), enfermidade transmitida pelo carrapato Boophilus microplus, é responsável por alta morbidade e mortalidade nos rebanhos de corte e leite na região Sul do Brasil.
Vascular Endothelial Cell Growth Factor Receptor 3–Mediated Activation of Lymphatic Endothelium Is Crucial for Tumor Cell Entry and Spread via Lymphatic Vessels (2005)

Lymphangiogenic growth factors vascular endothelial growth factor (VEGF)-C and VEGF-D have been shown to promote lymphatic metastasis by inducing tumor-associated lymphangiogenesis. In this study, we have investigated how tumor cells gain access into lymphatic vessels and at what stage tumor cells initiate metastasis. We show that VEGF-C produced by tumor cells induced extensive lymphatic sprouting towards the tumor cells as well as dilation of the draining lymphatic vessels, suggesting an active role of lymphatic endothelial cells in lymphatic metastasis. A significant increase in lymphatic vessel growth occurred between 2 and 3 weeks after tumor xenotransplantation, and lymph node metastasis occurred at the same stage. These processes were blocked dose-dependently by inhibition of VEGF receptor 3 (VEGFR-3) signaling by systemic delivery of a soluble VEGFR-3-immunoglobulin (Ig) fusion protein via adenoviral or adeno-associated viral vectors. However, VEGFR-3-Ig did not suppress lymph node metastasis when the treatment was started at a later stage after the tumor cells had already spread out, suggesting that tumor cell entry into lymphatic vessels is a key step during tumor dissemination via the lymphatics. Whereas lymphangiogenesis and lymph node metastasis were significantly inhibited by VEGFR-3-Ig, some tumor cells were still detected in the lymph nodes in some of the treated mice. This indicates that complete blockade of lymphatic metastasis may require the targeting of both tumor lymphangiogenesis and tumor cell invasion.
Gas-phase synthesis of highly-specific nanoparticles on the pilot-plant scale (2010)

Highly-specific nanoparticles provide promising properties for current and future applications as the size dependence of their properties allows to tailor materials for specific applications [1-3]. The synthesis of particles in the size regime of a few nanometers follows two different routes, the wet-chemical synthesis route that usually yields materials grown by thermodynamic control and the gasphase synthesis processes, which allow a kinetic control of nanoparticle formation. The second route is favored for the formation of doped nanoparticles and nanocomposites. However, industrial nanoparticle production is frequently carried out by cost-effective flame processes with high throughput [4]. The quality of the resulting materials is limited and often agglomerates with a broad size distribution are formed. Highly specific nanomaterials are often available in minute quantities and therefore, subsequent processing steps to generate nanoparticulate composites cannot be studied.
Synthesis and structure of tetraethylammonium (Dithiocarbonato-S,S')-bis(ethylxanthato)colbaltate(III) (1978)

The title compound, (Et4N) [Co(S2CO)(S2COEt)2], and its chromium analogue have been prepared by nucleophilic attack of (Et4N)(S2COEt) on the parent tris(ethylxanthato)metal(III) complex in acetone solution, the structure of the cobalt derivative being confirmed by single-crystal X- ray structure determination; the structure was refined by least squares to a residual of 0.045 for 2306 'observed' reflections. Crystals are orthorhombic, P bca, a 17.303(8), b 16.970(6), c 16.052(6) ?, Z 8. &amp;lt;Co- S&amp;gt; for the ethylxanthate ligands is 2.286 ?, longer than in the parent tris(ethylxanthato)-cobalt(III) complex, while &amp;lt;Co-S&amp;gt; for the dithiocarbonate, chelated through the two sulphurs, is 2.251 ?.
GENERAL FRAMEWORK FOR CONSISTENT SAMPLING IN HILBERT SPACES (2005)

We introduce a general framework for consistent linear reconstruction in infinite-dimensional Hilbert spaces. We study stable reconstructions in terms of Riesz bases and frames, and generalize the notion of oblique dual frames to infinte-dimensional frames. As we show, the linear reconstruction scheme coincides with the so-called oblique projection, which turns into an ordinary orthogonal projection when adapting the inner product. The inner product of interest is, in general, not unique. We characterize the inner products and the corresponding positive operators for which this geometrical interpretation applies.
ChemInform Abstract: First Syntheses of Melophlins P (Ia), Q (Ib), and R (Ic) and Effects of Melophlins on the Growth of Microorganisms and Tumor Cells. (2009)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
MIG‐13 controls anteroposterior cell migration by interacting with UNC‐71/ADM‐1 and SRC‐1 in Caenorhabditis elegans (2012)

The transmembrane protein MIG‐13 is a key regulator required for anterior migration of neural cells in Caenorhabditis elegans , but the signaling mechanisms involved remain unknown. Here, we isolated a suppressor mutation in the unc‐71/adm‐1 gene, which rescued the AVM neuron migration defect in mig‐13 mutants. Genetic analyses revealed that UNC‐71 at least partly acts downstream of MIG‐13 and has an inhibitory effect on the anterior cell migration. The unc‐71 mutation also rescued the anterior migration defect of AVM neuron in src‐1 mutants. These findings suggest that MIG‐13 controls anteroposterior cell migration by interacting with UNC‐71 and SRC‐1 in C. elegans .
Capacity Analysis for Compact MIMO Systems (2005)

We analyze the impact of mutual coupling on the capacity of MIMO systems with compact antenna arrays. Existing studies present conflicting views on the effect of mutual coupling. This is, in part, due to their different scopes and underlying assumptions of the system setups. In this paper, we aim to give a comprehensive picture by first examining the impact of mutual coupling on three capacity-related performance measures: antenna correlation, efficiency and bandwidth. While the first two aspects have received significant attention, antenna bandwidth with mutual coupling is a relatively uncharted territory. We show that while implementing a good matching network can drastically improve the system capacity for narrowband systems in the presence of strong mutual coupling, the same conclusions may not necessarily apply to wideband cases. To exemplify this, we carry out capacity simulations for an end-to-end MIMO system where a recently proposed S-parameter approach is used in conjunction with the 3GPP-3GPP2 channel model to model realistic wideband channel and antenna effects at both transmit and receive ends.
Simulation of X-ray tubes for imaging applications (2000)

This work describes the simulation of X-ray tubes used in imaging applications. The cross section for the electron impact ionisation of the K-shell for selected materials, and given by different sources, is analysed. An enhanced version of the EGS4 code incorporating different models to deal with ionisation of the K-shell by electron impact is briefly described. The code is then used to simulate photon spectra produced in X-ray tubes operating at energies below 100 keV. The results obtained for Ag and Mo targets in transmission and reflection geometries, and for different tube voltages, are then benchmarked against experimental data. The results show an overall good agreement between simulated and experimental data. It is shown that the accuracy of the result depends on the model used to deal with the ionisation of the K-shell. When appropriate models are in use, simulated and experimental spectra agree within 15% at the K/sub /spl alpha// peak.
Comprehensive deletion landscape of CRISPR-Cas9 identifies minimal RNA-guided DNA-binding modules (2021)

Proteins evolve through the modular rearrangement of elements known as domains. Extant, multidomain proteins are hypothesized to be the result of domain accretion, but there has been limited experimental validation of this idea. Here, we introduce a technique for genetic minimization by iterative size-exclusion and recombination (MISER) for comprehensively making all possible deletions of a protein. Using MISER, we generate a deletion landscape for the CRISPR protein Cas9. We find that the catalytically-dead Streptococcus pyogenes Cas9 can tolerate large single deletions in the REC2, REC3, HNH, and RuvC domains, while still functioning in vitro and in vivo, and that these deletions can be stacked together to engineer minimal, DNA-binding effector proteins. In total, our results demonstrate that extant proteins retain significant modularity from the accretion process and, as genetic size is a major limitation for viral delivery systems, establish a general technique to improve genome editing and gene therapy-based therapeutics.
Linear viscoelastic properties of hyperbranched polyisobutylene (2001)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation C. G. Robertson, C. M. Roland, C. Paulo, J. E. Puskas; Linear viscoelastic properties of hyperbranched polyisobutylene. J. Rheol. 1 May 2001; 45 (3): 759–772. https://doi.org/10.1122/1.1357821 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentThe Society of RheologyJournal of Rheology Search Advanced Search |Citation Search
Correlation of the Reaction Front with Roughness in Chemically Amplified Photoresists (2004)

A model bilayer geometry is used to correlate the reaction front profile width with roughness after development in 0.26 N tetramethylammonium hydroxide aqueous base developer. The bilayer geometry utilizes a bottom layer of protected photoresist polymer with a top layer of deprotected photoresist loaded with photoacid generator. Neutron reflectivity measurements show that the reaction front profile broadens during post-exposure bake (PEB) times between 15 s and 90 s to a width approaching 150 Å. The subsequent development and atomic force microscopy experiments reveal an increase in nominal root-mean-squared (RMS) roughness as well as increased lateral length scale features with PEB time. While the form and size of the deprotection profile have been proposed as an important factor in line edge roughness (LER) formation, this study shows the connection of sidewall morphology to a measured deprotection profile.
Abstract 16294: Maladaptive Hemodynamic Responses to Sympathetic Activation Play a Pivotal Role in the Pathogenesis of Acute Decompensated Heart Failure (2019)

Introduction: Despite the recent progress in cardiovascular research, the mortality rate of acute decompensated heart failure (ADHF) remains high. Furthermore, the mechanism responsible for the hig...
Fluid Degradation Measurement Based on a Dual Coil Frequency Response Analysis (2020)

Electrical industry uses oils for cooling and insulation of several machines, such as power transformers. In addition, it uses water for cooling some synchronous generators. To avoid malfunctions in these assets, fluid quality should be preserved. To contribute to this aim, a sensor that detects changes in fluid composition is presented. The designed sensor is like a single-phase transformer whose magnetic core is the fluid whose properties will be measured. The response of this device to a frequency sweep is recorded. Through a comparison between any measurement and a reference one corresponding to a healthy state, pollutants presence, such as water in oil or salt in water, can be measured. The performance of the sensor was analyzed through simulation. In addition, a prototype was built and tested measuring water concentration in oil and salt content in water. The correlation between pollutant concentration measured with the sensor and known pollutant concentrations is good.
Self tuning pick-ups for inductive power transfer (2008)

Inductive power transfer systems are now commonly used in ultra clean or dirty industrial applications to deliver power to both moving and stationary loads without contact. Each load requires a power pick-up and regulator that is coupled to a track, which carries a resonant current at VLF frequencies (typically 10-50 kHz). Modern pick-ups are tuned for resonance at the track frequency and their power delivery increasingly depends on accurate tuning of the resonant circuit. In this paper a new self tuning power regulator for inductive power transfer systems is proposed and a control strategy described. The system uses a binary weighted series of capacitors that can be switched via simple relays across a parallel resonant pick-up circuit. There are no additional switching losses during tuning, detection and operation so that the technique is applicable to high power pick-ups. The tuning circuit is evaluated under simulation and then made to operate on a practical 500 W pick-up regulator used in materials handling applications. In both simulation and experiment it is shown to successfully detect the tuning state of the system and correct for it during operation.
On Measurements of the Basic Parameters of High-Current Relativistic Electron Beams (2002)

The possibilities of performing measurements such as electron energy on the basis of cyclotron absorption of electromagnetic fields by electrons, and current using a Rogowski coil accounting for dispersion, are considered for short pulse relativistic electron beams.
Study on the rigidity improvement of thin aerogel non-woven composite insulator according to the fiber orientation design (2017)

It is investigated the rigidity improvement about thin aerogel non-woven composite insulator by orientation design of the non-woven fabric in the insulator by structural analysis. As a result, it was found that orientation affects the rigidity of the insulator. In addition, it was confirmed using the models that orientation does not affect thermal conductivity of the insulator by heat transfer analysis.
Construction of Crystalline 2D Covalent Organic Frameworks with Remarkable Chemical (Acid/Base) Stability via a Combined Reversible and Irreversible Route (2012)

Two new chemically stable [acid and base] 2D crystalline covalent organic frameworks (COFs) (TpPa-1 and TpPa-2) were synthesized using combined reversible and irreversible organic reactions. Syntheses of these COFs were done by the Schiff base reactions of 1,3,5-triformylphloroglucinol (Tp) with p-phenylenediamine (Pa-1) and 2,5-dimethyl-p-phenylenediamine (Pa-2), respectively, in 1:1 mesitylene/dioxane. The expected enol-imine (OH) form underwent irreversible proton tautomerism, and only the keto-enamine form was observed. Because of the irreversible nature of the total reaction and the absence of an imine bond in the system, TpPa-1 and TpPa-2 showed strong resistance toward acid (9 N HCl) and boiling water. Moreover, TpPa-2 showed exceptional stability in base (9 N NaOH) as well.
Progress Of The Excel Program At The University Of Central Florida: An Nsf Step Funded Project (2020)

understanding, describing and conserving the World's biodiversity, both at the organismal and molecular levels. The foundation of his research lies in molecular phylogenetics thereby using genetic material (DNA) to hypothesize the evolutionary history of organisms or gene sequences. He then tries to infer which historical and/or current forces may have led to the organisms present day behavior, distribution, diversity, and ecology.