gebhart/patrepeval huggingface dataset:
ChemInform Abstract: CHROMIUM(III) COMPLEXES OF MULTIDENTATE PHOSPHINES, ARSINES, AND THIO ETHERS. CRYSTAL AND MOLECULAR STRUCTURE OF THE COMPLEX MER‐TRICHLORO(TRIS(2‐DIPHENYLPHOSPHINOETHYL)PHOSPHINE)CHROMIUM(III) (1984)

Abstract Die I : I‐molare Umsetzung der Trihalogeno‐TH F‐Cr(III)‐Komplexe (I) (X′: CI, Br, I) oder des mit AgF aus dem Trichloro‐Komplex (I) (X′ t" Cl) gebildeten Trifluoro‐Analogen mit den aufgeführten Liganden ergibt die I : I‐Komplexe mit mer‐ Konfiguration (IIa) und (IIc) oder fac‐Konfiguration (IIb) und (lld) sowie die Triiodo‐Komplexe (IIe) mit nicht identifizierter Ligandanordnung.
Efficacy of two different thiol-modified crosslinked hyaluronate formulations as vitreous replacement compared to silicone oil in a model of retinal detachment (2017)

The efficacy of two novel artificial vitreous body substitutes (VBS) consisting of highly biocompatible thiolated cross-linked hyaluronic acid (HA)-based hydrogels in comparison to silicone oil in a model of retinal detachment was investigated. Pars plana vitrectomy (23G) was performed in the right eye of 24 pigmented rabbits. Retinal detachment of two quadrants was induced by creating a small retinotomy near the vascular arcade and injecting balanced salt solution (BSS) subretinally. The retina was reattached by injecting air, which was followed by increasing the infusion pressure, and the retinal tear was treated by endolaser photocoagulation. At the end of the procedure, the eye was filled either with 5000-cs silicone oil (after fluid air exchange) or the respective hydrogel (with two different viscosities). Follow-up examination included slit lamp examination, funduscopy, intraocular pressure measurements (IOP), optical coherence tomography (OCT) and electroretinogram (ERG) measurements. After a maximum follow-up of four weeks both eyes were removed, examined macroscopically, photographed, and prepared for histology. Of the eight rabbits that received silicone oil, seven (87.5%) developed a recurrent retinal detachment with pronounced proliferative vitreoretinopathy within the first two weeks after surgery. In contrast, in the hydrogel treated eyes, the retina stayed attached in the majority of the cases (73.3%). IOP and retinal morphology were normal as long as the retina remained re-attached. In conclusions, this model of retinal detachment, both thiolated crosslinked hyaluronate hydrogels showed superior efficacy when compared to silicone oil. These hydrogels have a promising potential as novel vitreous body substitutes.
Optimization of Transparent and Reflecting Electrodes for Amorphous Silicon Solar Cells, Annual Subcontract Report, 1 May 1991 - 30 April 1992 (1993)

This report describes work to improve the performance of solar cells by improving the electrical and optical properties of their transparent conducting oxides (TCO) layers. Boron-doped zinc-oxide films were deposited by atmospheric pressure chemical vapor deposition in a laminar-flow reactor from diethyl zinc, tert-butanol, and diborane in the temperature range between 300[degrees]C and 420[degrees]C. When the deposition temperature was above 320[degrees]C, both doped and undoped films have highly oriented crystallites with their c-axes perpendicular to the substrate plane. Films deposited from 0.07% diethyl zinc and 2.4% tert-butanol have electron densities between 3.5 [times] 10[sup 20] cm[sup [minus]3] and 5.5 [times] 10[sup 20] cm[sup [minus]3], conductivities between 250 [Omega][sup [minus]1] and 2500 [Omega][sup [minus]1] and mobilities between 2.5 cm[sup 2]/V-s and 35.0 cm[sup 2]/V-s, depending on dopant concentration, film thickness, and deposition temperature. Optical measurements show that the maximum infrared reflectance of the doped films is close to 90%, compared to about 20% for undoped films. Film visible absorption and film conductivity were found to increase with film thickness. The ratio of conductivity to visible absorption coefficient for doped films was between 0.1 [Omega] and 1.1 [Omega][sup [minus]1]. The band gap of the film changes from 3.3 eV to 3.7 eV when the film is doped with 0.012% diborane.
A Short Overview of FLOWS: A First-Order Logic Ontology for Web Services. (2008)

FLOWS is a first-order logic ontology for Web services and a W3C Submission. In this article, we describe some of the motivation behind the development of FLOWS, together with its key features.
Evaluated Gas Phase Basicities and Proton Affinities of Molecules; Heats of Formation of Protonated Molecules (1984)

The available data on gas phase basicities and proton affinities of molecules are compiled and evaluated. Tables giving the molecules ordered (1) according to proton affinity and (2) according to empirical formula, sorted alphabetically are provided. The heats of formation of the molecules and the corresponding protonated species are also listed.
A Study on Blend Effect of Fuel in Flame Spread Along An One-Dimensional Droplet Array (1998)

Experimental investigation on flame spread of blended fuel droplet arrays has been conducted for droplet diameters of 1.0mm and 0.75mm using high-speed chemiluminescence images of OH radical. The flame spread rate is measured with blended fuel composition, droplet diameter, and droplet spacing. Flame spread is categorized into two: a continuous mode and an intermittent one. There exist a limit droplet spacing, above which flame does not spread, and a droplet spacing of maximum flame spread, which is closely related to flame diameter. It is seen that flame spread rate is mainly dependent upon the relative position of flame zone within a droplet spacing. In case of large droplet, the increase of % volume of Heptane induces the shift of limit droplet spacing to a larger spacing since volatile Heptane plays a role of an enhancer of flame spread rate. In case of small droplet, the increase of % volume of Heptane leads to the shift of limit droplet spacing to a smaller droplet spacing. This is so because of the delayed chemical reaction time by the rapid increase of mass flux of fuel vapor for small droplet.
Digital Audio for Multimedia (2000)

The paper covers key technologies in wideband audio coding including auditory masking, perceptual coding, frequency domain coding, and dynamic bit allocation. The MPEG standardization work is then described. MPEG algorithms have found a wide range of communications-based and storage-based applications. For example, the European digital audio broadcast (DAB) makes use of MPEG-1. It will then be shown that the MPEG-2 Advanced Audio Coding (AAC) standard offers a powerful collection of very flexible tools for stereo and multichannel coding, and that AAC outperforms many other coding algorithms (including MPEG-1 coders). Finally, we will address the current MPEG4 speech and audio coding standardization work which merges the whole range of audio from high fidelity audio coding and speech coding down to synthetic audio, synthetic speech and text-to-speech conversion. 1. Introduction Typical audio signal classes are telephone speech, wideband speech, and wideband audio, all of whi...
<i>Helicobacter pylori</i> and Antrum Erosion‐Specific Gene Expression Patterns: The Discriminative Role of CXCL13 and VCAM1 Transcripts (2008)

Whole genomic microarray analysis yielded new H. pylori infection and erosion-related gene expression changes. Discriminative genes can be used in mRNA-based diagnostic classification of gastric biopsies.
Estimating the spin of a table tennis ball using Inverse Compositional Image Alignment (2012)

In this paper, we propose a method for estimating the rotational velocity of a table tennis ball with Inverse Compositional Image Alignment, ICIA. Assuming orthogonal projection of the camera, we derive an update rule for the motion parameters. Because of the precomputation of the Hessian matrix in ICIA and the simplifying assumptions, the motion parameters estimation at each frame is very fast. We evaluate results for measuring the spins in a synthesized sequence, as well as in real image sequences of table tennis rallies.
Joint Channel Estimation and Beamforming for Millimeter Wave Cellular System (2015)

In this paper, we propose a joint channel estimation and beamforming (BF) scheme for the wide band millimeter wave (mmWave) cellular system. Specifically, low complexity compressive sensing (CS) based estimation algorithm is used to estimate the sparse mmWave channels. Based on the estimated channel, low complexity BF scheme is proposed to adapt to the channel for data communications. The algorithm is designed by considering the practical hardware and channel constraints. Furthermore, the complexity is very low without matrix inverse and singular value decomposition (SVD) compared with traditional algorithms, which is well suitable to practical realization. Finally, we show by simulations that the performance of proposed scheme is close to the optimal scheme with extremely less overhead.
Modeling drag reduction and meniscus stability of superhydrophobic surfaces comprised of random roughness (2011)

Previous studies dedicated to modeling drag reduction and stability of the air-water interface on superhydrophobic surfaces were conducted for microfabricated coatings produced by placing hydrophobic microposts/microridges arranged on a flat surface in aligned or staggered configurations. In this paper, we model the performance of superhydrophobic surfaces comprised of randomly distributed roughness (e.g., particles or microposts) that resembles natural superhydrophobic surfaces, or those produced via random deposition of hydrophobic particles. Such fabrication method is far less expensive than microfabrication, making the technology more practical for large submerged bodies such as submarines and ships. The present numerical simulations are aimed at improving our understanding of the drag reduction effect and the stability of the air-water interface in terms of the microstructure parameters. For comparison and validation, we have also simulated the flow over superhydrophobic surfaces made up of aligned or staggered microposts for channel flows as well as streamwise or spanwise ridges configurations for pipe flows. The present results are compared with theoretical and experimental studies reported in the literature. In particular, our simulation results are compared with work of Sbragaglia and Prosperetti, and good agreement has been observed for gas fractions up to about 0.9. The numerical simulations indicate that the random distribution of surface roughness has a favorable effect on drag reduction, as long as the gas fraction is kept the same. This effect peaks at about 30% as the gas fraction increases to 0.98. The stability of the meniscus, however, is strongly influenced by the average spacing between the roughness peaks, which needs to be carefully examined before a surface can be recommended for fabrication. It was found that at a given maximum allowable pressure, surfaces with random post distribution produce less drag reduction than those made up of staggered posts.
An audio card-based kit for educational purposes (2003)

This paper describes an inexpensive kit which is designed to allow users to get acquainted with modern instrumentation without the necessity to get to a laboratory where the instruments are available. The kit takes advantage of any low-cost audio card installed into a personal computer and is based on an open-source code, which interacts with the audio card, and on a simple test board, which allows the audio card to be calibrated. The kit is the base of the Instrumentation Training Project at the Politecnico di Torino, which is composed of a set of guided experiments based on the capabilities of the training kit.
In Vitro Antibacterial Activities of Platelet Microbicidal Protein and Neutrophil Defensin against <i>Staphylococcus aureus</i> Are Influenced by Antibiotics Differing in Mechanism of Action (1999)

Thrombin-induced platelet microbicidal protein-1 (tPMP-1) and human neutrophil defensin-1 (HNP-1) are small, cationic antimicrobial peptides. These peptides exert potent in vitro microbicidal activity against a broad spectrum of human pathogens, including Staphylococcus aureus. Evidence suggests that tPMP-1 and HNP-1 target and disrupt the bacterial membrane. However, it is not yet clear whether membrane disruption itself is sufficient to kill the bacterium or whether subsequent, presumably intracellular, events are also involved in killing. We investigated the staphylocidal activities of tPMP-1 and HNP-1 in the presence or absence of pretreatment with antibiotics that differ in their mechanisms of action. The staphylocidal effects of tPMP-1 and HNP-1 on control cells (no antibiotic pretreatment) were rapid and concentration dependent. Pretreatment of S. aureus with either penicillin or vancomycin (bacterial cell wall synthesis inhibitors) significantly enhanced the anti-S. aureus effects of tPMP-1 compared with the effects against the respective control cells over the entire tPMP-1 concentration range tested (P < 0.05). Similarly, S. aureus cells pretreated with these antibiotics were more susceptible to HNP-1 than control cells, although the difference in the effects against cells that received penicillin pretreatment did not reach statistical significance (P < 0.05 for cells that received vancomycin pretreatment versus effects against control cells). Studies with isogenic pairs of strains with normal or deficient autolytic enzyme activities demonstrated that enhancement of S. aureus killing by cationic peptides and cell wall-active agents could not be ascribed to a predominant role of autolytic enzyme activation. Pretreatment of S. aureus cells with tetracycline, a 30S ribosomal subunit inhibitor, significantly decreased the staphylocidal effect of tPMP-1 over a wide peptide concentration range (0.16 to 1.25 microgram/ml) (P < 0.05). Furthermore, pretreatment with novobiocin (an inhibitor of bacterial DNA gyrase subunit B) and with azithromycin, quinupristin, or dalfopristin (50S ribosomal subunit protein synthesis inhibitors) essentially blocked the S. aureus killing resulting from exposure to tPMP-1 or HNP-1 at most concentrations compared with the effects against the respective control cells (P < 0.05 for a tPMP-1 concentration range of 0.31 to 1.25 microgram/ml and for an HNP-1 concentration range of 6.25 to 50 microgram/ml). These findings suggest that tPMP-1 and HNP-1 exert anti-S. aureus activities through mechanisms involving both the cell membrane and intracellular targets.
A Novel Fast Skeletal Muscle Activator, CK‐2017357, Improves Muscle Function in a Rodent Model of Myasthenia Gravis (2011)

Myasthenia gravis is a chronic autoimmune disease wherein the body produces antibodies that inhibit transmission at the neuromuscular junction, causing skeletal muscle weakness and fatigue. CK‐2017357 (CK‐357) is a small molecule activator of fast skeletal muscle that sensitizes the sarcomere to calcium and increases sub‐maximal force production. The objective of this study was to determine if administration of CK‐357 could increase muscle strength and improve functional capacity in a rodent model of myasthenia gravis. Female, Sprague‐Dawley rats injected with a single intra‐peritoneal dose of inhibitory acetylcholine receptor antibody displayed decreased tension‐generating capacity of intact, fast twitch muscle in situ and decreased conscious functional capacity assessed by forelimb grip strength. Single doses of CK‐357 improved conscious grip function in a dose‐dependent manner. In addition, CK‐357 increased force‐generating capacity and decreased tension decline during repeated stimulation of intact muscle in situ . Together these data suggest CK‐357 may ameliorate muscle weakness and fatigue associated with myasthenia gravis to provide a novel therapeutic approach for treatment of these patients. Supported, in part, by NIH Award 1RC3NS070670. Content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH.
Sol‐gel based YAG:Ce<sup>3+</sup> powders for applications in LED devices (2007)

Abstract Luminescent Y 3(1‐x) Al 5 O 12 :Ce 3+ 3x (YAG: Ce 3+ ) (x = 0.001 to 0.05), Lu 2.97 Al 5 O 12 :Ce 3+ 0.03 (LuAG: Ce 3+ ) and Y 3‐0.03‐3y Al 5 O 12 :Ce 3+ 0.03 , Tb 3y (YAG: Ce 3+ ,Tb 3+ ) (y = 0.1 and 0.2 phosphor powders have been successfully prepared by the sol‐gel route from alkoxide precursors. Purity of derived materials was investigated by X‐ray diffraction (XRD): Pure YAG phase was obtained without any intermediate whatever the Ce 3+ doping rate between 0.1 and 5 mol% and LuAG phase was also effectively achieved. Luminescent properties of samples have been recorded. Excitation spectra of YAG:Ce 3+ crystallized powders have revealed a broad excitation band around 470 nm, which matches very well with GaN‐based blue LED. On the basis of the emission spectra study under blue excitation, the Ce 3+ optimal concentration of powders has been determined. Eventually, effects of codoping by Tb 3+ and substituting Y 3+ by Lu 3+ have been analysed. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Expression of caveolin-1 in peritumoral stroma is associated with histological grade in ovarian serous tumors (2015)

Our findings demonstrated a link between Caveolin-1 expression and the aggressiveness of ovarian cancer. Therefore, it seems safe to suggest that Cav-1 may act as a differential diagnostic biomarker in ovarian serous tumors.
Vascular stem cells in diabetic complications: evidence for a role in the pathogenesis and the therapeutic promise (2012)

Long standing diabetes leads to structural and functional alterations in both the micro- and the macro-vasculature. Vascular endothelial cells (ECs) are the primary target of the hyperglycemia-induced adverse effects. Vascular stem cells that give rise to endothelial progenitor cells (EPCs) and mesenchymal progenitor cells (MPCs) represent an attractive target for cell therapy for diabetic patients. A number of studies have reported EPC dysfunction as a novel participant in the culmination of the diabetic complications. The controversy behind the identity of EPCs and the similarity between these progenitor cells to hematopoietic cells has led to conflicting results. MPCs, on the other hand, have not been examined for a potential role in the pathogenesis of the complications. These multipotent cells, however, do show a therapeutic role. In this article, we summarize the vascular changes that occur in diabetic complications highlighting some of the common features, the key findings that illustrate an important role of vascular stem cells (VSCs) in the pathogenesis of chronic diabetic complications, and provide mechanisms by which these cells can be used for therapy.
Nitrosoanilines (1959)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNitrosoanilinesJohn J. D'Amico, Ching Chen Tung, and Lloyd A. WalkerCite this: J. Am. Chem. Soc. 1959, 81, 22, 5957–5963Publication Date (Print):November 1, 1959Publication History Published online1 May 2002Published inissue 1 November 1959https://pubs.acs.org/doi/10.1021/ja01531a029https://doi.org/10.1021/ja01531a029research-articleACS PublicationsRequest reuse permissionsArticle Views339Altmetric-Citations19LEARN 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 InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Thin film transistors fabricated by in situ doped unhydrogenated polysilicon films obtained by solid phase crystallization (2001)

High-mobility low-temperature (⩽600 °C) unhydrogenated in situ doped polysilicon thin film transistors (TFTs) are made. Polysilicon layers are grown by a low pressure chemical vapour deposition (LPCVD) technique and crystallized in a vacuum by thermal annealing. The source and drain regions are in situ doped. The gate insulator is made of an atmospheric pressure chemical vapour deposition (APCVD) silicon dioxide. Hydrogen passivation is not performed on the transistors. One type of transistor is made of two polysilicon layers, the other one is fabricated from a single polysilicon layer. The electrical properties are better for transistors made of a single polysilicon layer: a low threshold voltage (1.2 V), a subthreshold slope S = 0.7 V/dec, a high field effect mobility (≈100 cm2 V-1 s-1) and an on/off-state current ratio higher than 107 for a drain voltage Vds = 1 V. At low drain voltage, for both transistors, the off-state current results from a pure thermal emission of trapped carriers. However, at high drain voltage, the electrical behaviour is different: in the case of single polysilicon TFTs, the current obeys the field-assisted (Poole-Frenkel) thermal emission model of trapped carriers while for TFTs made of two polysilicon layers, the higher off-state current results from a field-enhanced thermal emission.
A GaAs phase shifter for electronically scanned antennae (1988)

The authors describe the design of a 4-bit phase shifter GaAs MMIC for operation over a 4-8 GHz bandwidth. Phase shifting is achieved by using GaAs MESFETs to switch the circuit transfer function from high pass to low pass and vice versa. In order to achieve small chip size and improved phase accuracy a novel component has been developed.
The carboxy-terminal fragment of α1A calcium channel preferentially aggregates in the cytoplasm of human spinocerebellar ataxia type 6 Purkinje cells (2009)

Spinocerebellar ataxia type 6 (SCA6) is an autosomal dominant neurodegenerative disease caused by a small polyglutamine (polyQ) expansion (control: 4-20Q; SCA6: 20-33Q) in the carboxyl(C)-terminal cytoplasmic domain of the alpha(1A) voltage-dependent calcium channel (Ca(v)2.1). Although a 75-85-kDa Ca(v)2.1 C-terminal fragment (CTF) is toxic in cultured cells, its existence in human brains and its role in SCA6 pathogenesis remains unknown. Here, we investigated whether the small polyQ expansion alters the expression pattern and intracellular distribution of Ca(v)2.1 in human SCA6 brains. New antibodies against the Ca(v)2.1 C-terminus were used in immunoblotting and immunohistochemistry. In the cerebella of six control individuals, the CTF was detected in sucrose- and SDS-soluble cytosolic fractions; in the cerebella of two SCA6 patients, it was additionally detected in SDS-insoluble cytosolic and sucrose-soluble nuclear fractions. In contrast, however, the CTF was not detected either in the nuclear fraction or in the SDS-insoluble cytosolic fraction of SCA6 extracerebellar tissues, indicating that the CTF being insoluble in the cytoplasm or mislocalized to the nucleus only in the SCA6 cerebellum. Immunohistochemistry revealed abundant aggregates in cell bodies and dendrites of SCA6 Purkinje cells (seven patients) but not in controls (n = 6). Recombinant CTF with a small polyQ expansion (rCTF-Q28) aggregated in cultured PC12 cells, but neither rCTF-Q13 (normal-length polyQ) nor full-length Ca(v)2.1 with Q28 did. We conclude that SCA6 pathogenesis may be associated with the CTF, normally found in the cytoplasm, being aggregated in the cytoplasm and additionally distributed in the nucleus.