gebhart/patrepeval huggingface dataset:
Crystalline Oxyfluorinated Open‐Framework Compounds: Silicates, Metal Phosphates, Metal Fluorides and Metal‐Organic Frameworks (MOF) (2007)

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, please click on HTML or PDF.
Signature of Atomic Structure in the Quantum Conductance of Gold Nanowires (2000)

We have used high resolution transmission electron microscopy to determine the structure of gold nanowires generated by mechanical stretching. Just before rupture, the contacts adopt only three possible atomic configurations, whose occurrence probabilities and quantized conductance were subsequently estimated. These predictions have shown a remarkable agreement with conductance measurements from a break junction operating in ultrahigh vacuum, corroborating the derived correlation between nanowire atomic structure and conductance behavior.
Sucrose synthase genes in barley (1993)

A cDNA of 2,708 bp encoding type 2 sucrose synthase (Ss2) from barley has been sequenced. Similarity of this cDNA with respect to that of type 1 (Ss1) is high in the coding region (75% identical positions), but low (41% identical residues) in the 3' non-coding region. Type-specific non cross-hybridizing probes for Northern blot analysis have been obtained from the 3' ends. The Ss1 type is highly expressed in developing endosperm and in roots and, at lower levels, in coleoptiles and aleurone. The Ss2 mRNA is abundant in endosperm, low in aleurone, and undetected in coleoptiles and roots.
Aristolochic acid nephropathy: variation in presentation and prognosis (2011)

AAN has variant phenotypes with distinct prognosis, which is determined by the variable AA medications. With better understanding of toxic and environmental causes for kidney injury, there would be a better chance to uncover the causal factors of cases of 'CKD without known causes' which is crucial for improving the disease outcomes.
RoboSTEAM Project – A brief review (2019)

General overview presentation of the RoboSTEAM Erasmus+ Project (Ref. 2018-1-ES01-KA201-050939)
Influences of ginsenosides Rb1 and Rg1 on reversible focal brain ischemia in rats. (1996)

Rb1 protected brain from ischemic and reperfusion injuries.
Myeloid sarcoma of the urinary bladder with cutaneous tumour seeding after percutaneous suprapubic catheterization. (2011)

Myeloid sarcoma (MS) is a rare extramedullary myeloid tumour. It has been reported in various sites, including lymph node, bone, skin, soft tissue, various organs and the CNS. It may precede or occur concurrently with acute myeloid leukemia. Urinary bladder involvement is extremely uncommon. We report a 70-year-old female who had MS of the urinary bladder, presented with frank and persistent hematuria associated with lower abdominal pain. She subsequently had tumour seeding in the abdominal skin via percutaneous suprapubic catheter. Tumours from both the urinary bladder and skin showed immature cells that were immunoreactive toward LCA (focal), MPO (strong), CD99 (weak) and CD117 (weak). Summary of cases in the literature is presented. The potential of its misdiagnosis and the useful markers for the diagnosis of MS are discussed.
Direct Manipulation of Isosurfaces and Cutting Planes in Virtual Environments (1993)

This paper presents some novel interface techniques for the visualization of scalar field data in virtual reality (VR) environments. In particular, we discuss the direct manipulation of isosurfaces and cutting planes and give general guidelines for design of user interfaces and algorithms for scientific visualization in virtual environments. This work was motivated by the need to visualize scalar field data from computational fluid dynamics (CFD) calculations interactively in the Virtual Wind Tunnel at NASA Ames, but the techniques are applicable to other problem areas, including medical imaging and geological and mathematical visualization. KEYWORDS: scientific visualization, virtual reality, direct-manipulation interfaces, scalar fields, isosurfaces, cutting planes INTRODUCTION Data sets in scientific visualization often take the form of 2D and 3D scalar fields. For example, height data on a 2D topographic map, temperatures in the fluid flow over a wing, and the density information ...
Whistle: Synchronization-Free TDOA for Localization (2011)

Localization is of great importance in mobile and wireless network applications. TDOA is one of the widely used localization schemes, in which a to-be-located object emits a signal and a number of receivers record the arriving time of the signal. By calculating the time difference of different receivers, the location of the object is estimated. In such a scheme, receivers must be precisely synchronized, even slight noises are completely unacceptable for centimeter-level localization. Previous studies have shown that existing time synchronization approaches for low-cost devices are insufficiently accurate and basically infeasible for high accuracy localization. In our scheme (called Whistle), several asynchronous receivers record a target signal and a successive signal that is generated artificially. By two-signal sensing and sample counting techniques, high time resolution can be achieved. This design fundamentally changes TDOA in the sense of releasing the synchronization requirement and avoiding many sources of inaccuracy. We implement Whistle on commercial off-the-shelf (COTS) cell phones. Through extensive real-world experiments in indoor and outdoor, quiet and noisy environments, the mean error is 10~20 centimeters in a 9m × 9m × 4m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> 3D space.
Preparation and properties of some filled poly(vinyl chloride) compositions (1999)

Different samples of filled poly(vinyl chloride) (PVC) compositions were formulated from PVC, a polar plasticizer mixture consisting of dioctylphthalate (DOP) and a chlorinated paraffin, and variable proportions of a white filler such as barite, calcium carbonate, kaoline, quartz, or talc; a conductive filler such as High Abrasion Furnace (HAF) carbon black; or a hydrated mineral filler such as aluminium hydroxide, magnesium hydroxide, or calcium hydroxide. Epoxidized soybean oil as a heat stabilizer and sandorin red (BRN) pigment were added. Electrical and mechanical studies show that the incorporation of white fillers produces a plasticized PVC of good electrical insulation character whereas the addition of HAF carbon black produces a sample with some electrical conductivity; both of them have good mechanical properties. Of the hydrated fillers studied aluminium hydroxide has been found to impart the best fire retardancy and good electrical properties for electric wires and cables. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 2657–2670, 1999
InP-based photonic integrated circuits (1991)

Semiconductor photonic integrated circuits (PICs) refer to that subset of optoelectronic integrated circuits (OEICs) which focus primarily on the monolithic integration of optically interconnected guided-wave optoelectronic devices. PIC research is driven primarily by the high cost of single-mode optical connections, but it has also been given new vitality from advances in MOVPE crystal growth and related processing techniques. Design issues and recent progress in the fabrication and performance of InP-based PICs is discussed.
A switched capacitor, inductorless DC to AC voltage step-up power converter (2003)

A technique for efficiently producing low-harmonic, 60 Hz sinusoidal 110 V AC from a 24 V DC source without inductors or transformers is presented. The novel circuit topology allows the same power MOSFETs that sequentially charge a bank of capacitors to synthesize the staircase sine wave approximation. A Fourier analysis of the effects of MOSFET on-resistance and switching time on a 1 kW prototype is presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Tamoxifen-loaded liposomal topical formulation arrests hair growth in mice (2010)

The hair growth-retarding effect of TAM observed in the current study clearly demonstrates its OR agonistic effect on hair growth. This work also provides a distinct lead towards the possible potential of TAM liposomal gel in the treatment of hirsutism.
Triacylglycerol Bioassembly in Microspore-Derived Embryos of <i>Brassica napus</i> L. cv Reston (1991)

Erucic acid (22:1) was chosen as a marker to study triacylglycerol (TAG) biosynthesis in a Brassica napus L. cv Reston microspore-derived (MD) embryo culture system. TAGs accumulating during embryo development exhibited changes in acyl composition similar to those observed in developing zygotic embryos of the same cv, particularly with respect to erucic and eicosenoic acids. However, MD embryos showed a much higher rate of incorporation of (14)C-erucoyl moieties into TAGs in vitro than zygotic embryos. Homogenates of early-late cotyledonary stage MD embryos (14-29 days in culture) were assessed for the ability to incorporate 22:1 and 18:1 (oleoyl) moieties into glycerolipids. In the presence of [1-(14)C]22:1-coenzyme A (CoA) and various acyl acceptors, including glycerol-3-phosphate (G-3-P), radiolabeled erucoyl moieties were rapidly incorporated into the TAG fraction, but virtually excluded from other Kennedy Pathway intermediates as well as complex polar lipids. This pattern of erucoyl incorporation was unchanged during time course experiments or upon incubation of homogenates with chemicals known to inhibit Kennedy Pathway enzymes. In marked contrast, parallel experiments conducted using [1-(14)C]18:1-CoA and G-3-P indicated that (14)C oleoyl moieties were incorporated into lyso-phosphatidic acids, phosphatidic acids, diacylglycerols, and TAGs of the Kennedy Pathway, as well as other complex polar lipids, such as phosphatidylcholines and phosphatidylethanolamines. When supplied with l-[2-(3)H(N)]G-3-P and [1-(14)C]22:1-CoA, the radiolabeled TAG pool contained both isotopes, indicating G-3-P to be a true acceptor of erucoyl moieties. Radio-high-performance liquid chromatography, argentation thin-layer chromatography/gas chromatography-mass spectrometry, and stereospecific analyses of radiolabeled TAGs indicated that 22:1 was selectively incorporated into the sn-3 position by a highly active diacylglycerol acyltransferase (DGAT; EC 2.3.1.20), while oleoyl moieties were inserted into the sn-1 and sn-2 positions. In the presence of sn-1,2-dierucin and [1-(14)C]22:1-CoA, homogenates and microsomal preparations were able to produce radiolabeled trierucin, a TAG not found endogenously in this species. A 105,000g pellet fraction contained 22:1-CoA:DGAT exhibiting the highest specific activity. The rate of 22:1-CoA:DGAT activity in vitro could more than account for the maximal rate of TAG biosynthesis observed in vivo during embryo development. In double label experiments, G-3-P was shown to stimulate the conversion of [(3)H]phosphatidylcholines to [(3)H]diacylglycerols, which subsequently acted as acceptors for (14)C erucoyl moieties. In vitro, 22:1 moieties did not enter the sn-1 position of TAGs by a postsynthetic modification or transacylation of preformed TAGs.
Why hybrid porous solids capture greenhouse gases? (2010)

Hybrid porous solids, with their tunable structures, their multifunctional properties and their numerous applications, are currently topical, particularly in the domain of adsorption and storage of greenhouse gases. Most of the data reported so far concern the performances of these solids in this domain, particularly in terms of adsorbed amounts of gas but do not explain at the atomic level why and how adsorption and storage occur. From a combination of structural, spectroscopic, thermodynamic experiments and of molecular simulations, this tutorial review proposes answers to these open questions with a special emphasis on CO2 and CH4 storage by some rigid and flexible hybrid porous materials.
A novel and easy-realizing initial rotor position detection method and speedup algorithm for sensorless BLDC motor drives (2008)

This paper presents a novel startup method of a brushless DC motor (BLDCM) without any reverse rotation and vibration. Using short pulse sensing method, the rotor position can be detected dynamically based on the saturation effect of the stator iron. After accelerating the motor to a certain speed at which the back-electromotive force (EMF) method is applied, all the power devices are turned off and the terminal voltage variation can be used to determine the switch moment and the corresponding commutation phases. The back-EMF zero-crossing point detection is conducted at the end of PWM on-state and the true zero-crossing point is extracted through the proposed algorithm. The experiment results have verified the feasibility and validity of the presented method.
[Expressions of pgaABC gene clusters and changes in biofilm phenotype of Acinetobacter baumannii in burn patients]. (2011)

The high expression of pgaB gene in AB strains isolated from burn patients can induce production of extracellular matrix, which may be related to increase in the ability and thickness of BF formation.
High performance digital-analog mixed device on an Si substrate with resistivity beyond 1 kΩ cm (2002)

High performance digital-analog mixed devices are fabricated on a high resistivity MCZ Si substrate with low oxygen in order to suppress substrate noise from digital to analog circuits. The low oxygen prevents substrate resistivity reduction due to thermal donor occurring during device fabrication process. Good characteristics of digital, analog and power amplifiers can be realized by optimizing the process of oxynitride, halo implantation and salicide. In 0.11 /spl mu/m CMOS, high drivability, that is, 770 /spl mu/A//spl mu/m for NMOS and 330 /spl mu/A//spl mu/m for PMOS was achieved at Ioff=10/sup -9/ A//spl mu/m. And fT value of 90 GHz for NMOS and 48 GHz for PMOS can be achieved. Additionally, high efficiency of 68% at 2 GHz operation can be realized in power amplifier with 0.30 /spl mu/m gate length.
Role of Inflammation in Diabetic Retinopathy (2018)

Diabetic retinopathy is a common complication of diabetes and remains the leading cause of blindness among the working-age population. For decades, diabetic retinopathy was considered only a microvascular complication, but the retinal microvasculature is intimately associated with and governed by neurons and glia, which are affected even prior to clinically detectable vascular lesions. While progress has been made to improve the vascular alterations, there is still no treatment to counteract the early neuro-glial perturbations in diabetic retinopathy. Diabetes is a complex metabolic disorder, characterized by chronic hyperglycemia along with dyslipidemia, hypoinsulinemia and hypertension. Increasing evidence points to inflammation as one key player in diabetes-associated retinal perturbations, however, the exact underlying molecular mechanisms are not yet fully understood. Interlinked molecular pathways, such as oxidative stress, formation of advanced glycation end-products and increased expression of vascular endothelial growth factor have received a lot of attention as they all contribute to the inflammatory response. In the current review, we focus on the involvement of inflammation in the pathophysiology of diabetic retinopathy with special emphasis on the functional relationships between glial cells and neurons. Finally, we summarize recent advances using novel targets to inhibit inflammation in diabetic retinopathy.
<b>Human Quiescin-Sulfhydryl Oxidase, QSOX1: Probing Internal Redox Steps by Mutagenesis</b> (2008)

The flavoprotein quiescin-sulfhydryl oxidase (QSOX) rapidly inserts disulfide bonds into unfolded, reduced proteins with the concomitant reduction of oxygen to hydrogen peroxide. This study reports the first heterologous expression and enzymological characterization of a human QSOX1 isoform. Like QSOX isolated from avian egg white, recombinant HsQSOX1 is highly active toward reduced ribonuclease A (RNase) and dithiothreitol but shows a >100-fold lower k cat/ K m for reduced glutathione. Previous studies on avian QSOX led to a model in which reducing equivalents were proposed to relay through the enzyme from the first thioredoxin domain (C70-C73) to a distal disulfide (C509-C512), then across the dimer interface to the FAD-proximal disulfide (C449-C452), and finally to the FAD. The present work shows that, unlike the native avian enzyme, HsQSOX1 is monomeric. The recombinant expression system enabled construction of the first cysteine mutants for mechanistic dissection of this enzyme family. Activity assays with mutant HsQSOX1 indicated that the conserved distal C509-C512 disulfide is dispensable for the oxidation of reduced RNase or dithiothreitol. The four other cysteine residues chosen for mutagenesis, C70, C73, C449, and C452, are all crucial for efficient oxidation of reduced RNase. C452, of the proximal disulfide, is shown to be the charge-transfer donor to the flavin ring of QSOX, and its partner, C449, is expected to be the interchange thiol, forming a mixed disulfide with C70 in the thioredoxin domain. These data demonstrate that all the internal redox steps occur within the same polypeptide chain of mammalian QSOX and commence with a direct interaction between the reduced thioredoxin domain and the proximal disulfide of the Erv/ALR domain.
An Object-Oriented Parallel Simulation Environment (1993)

This paper describes an approach to parallel object-oriented simulation. Parallel evaluation of simulation programs is accomplished by compiling objects into sets and production rules so that they can be evaluated with parallel, set-oriented operations which effectively utilize the capacity of parallel processors with minimal communications overhead.... Massive parallel processing, High performance computing
Antigen-Specific T-Lymphocyte Function After Cord Blood Transplantation (2006)

It has not been possible to determine the singular contribution of naive T lymphocytes to antigen-specific immunity after hematopoietic stem cell transplantation (HSCT), because of the confounding effects of donor-derived antigen-specific T lymphocytes present in most hematopoietic stem cell (HSC) products. Because umbilical cord blood contains only naive T lymphocytes, we longitudinally evaluated the recipients of unrelated cord blood transplantation (UCBT) for the presence of T lymphocytes with specificity for herpesviruses, to determine the contribution of the naive T lymphocytes to antigen-specific immune reconstitution after HSCT. Antigen-specific T lymphocytes were detected early after UCBT (herpes simplex virus on day 29; cytomegalovirus on day 44; varicella zoster virus on day 94). Overall, 66 of 153 UCBT recipients developed antigen-specific T lymphocytes to 1 or more herpesviruses during the evaluation period. The likelihood of developing antigen-specific T lymphocyte function was not associated with immunophenotypic T lymphocyte reconstitution, transplant cell dose, primary disease, or acute and chronic graft-versus-host disease. These results indicate that naive T lymphocytes present in the HSC inoculum can contribute to the generation of antigen-specific T-lymphocyte immunity early after transplantation.
Optical heterodyne detection and microwave rectification up to 26 GHz using quantum well infrared photodetectors (1995)

We have demonstrated heterodyne detection up to an intermediate frequency of 26.5 GHz using quantum well infrared photodetectors. A CO/sub 2/ laser and a lead-salt tunable diode laser were used as the infrared sources. Heterodyne detection experiments measure the high frequency behavior of photoexcited electrons and their transport properties. We have also carried out microwave rectification experiments which measure the high frequency behavior associated with the dark-current electron-transport processes.
Remixing playware (2014)

In this paper, we describe the concept of remixing playware, which allows sampling and remixing of both physical and functional (e.g. music content) aspects of a system. Such remixing playware has a number of distinguished features which are explained in the paper: user-configurable modularity, which allows the user to interact and manipulate with samples; user-guided behavior-based system, which allows music compositions to emerge from the way performer interacts with the instruments that provide the primitive behaviours; intelligent sampling as the ability of creating samples that allow anybody to remix with the samples ensuring an engaging outcome. The paper exemplifies remixing playware with a variety of implementations in RoboMusic concerts, the virtual MusicTiles app, the physical MagicCubes, the physical dices in Peter Gabriel concerts, and the S'n'S system. These examples focus on music creation and performance, based upon the concept of RoboMusic, and it is argued that the concept of remixing playware extends to many other application areas of playware.
Ceramic Plate Heat Exchanger for Heterogeneous Gas Phase Reactions (2005)

The catalytically coated ceramic plate heat exchanger represents a specialized microreactor offering a large surface‐to‐volume ratio and improved temperature control. Appropriate and economically viable manufacturing processes are presented together with the results of coating studies and thermal and reaction engineering investigations. The selective methanation of carbon monoxide, used as purification step for H 2 ‐rich gas streams in stationary fuel cell applications, was chosen as a suitable test reaction because of its strongly exothermic behavior and its need for tight temperature control.
Development of an Analytical System Based Around a Miniature Fast Analyzer (1973)

Abstract A modified version of a previously described miniature Fast Analyzer [Clin. Chem. 18, 753 (1972)] was used as the basis for developing a compact, potentially portable, analytical system. This system includes an automated and versatile sample-reagent loader, a miniature Fast Analyzer, several plastic rotors and their cleaning station, and a portable data system. The sample-reagent loader combines a unique turntable assembly and two "Micromedic" pipets to quickly (5 min per rotor), accurately, and precisely obtain, transfer, and dispense small volumes of sample (1 to 10 µl of sample, 50 µl of diluent) and reagent (20 µl of reagent, 50 µl of diluent) into their respective cavities in a 17-cuvet rotor. The loader uses separate sample and reagent carousels, which allows operation of the system in either the single-sample—multiple-chemistry, multiple-sample— single-chemistry, or multiple-sample—multiple-chemistry analytical modes. The miniature Fast Analyzer rotates a loaded 17-cuvet rotor through a stationary optical system at speeds up to 5000 rpm. The resulting centrifugal force is used to mix and to transfer the discrete aliquots of sample(s) and reagent(s) into their respective cuvets. The ensuing reactions are monitored photometrically, and the data are processed in real time by either a portable Data Processor [Clin Chem. 18, 762 (1972)] or an on-line computer. A major improvement to the analyzer has been the addition of a temperature-control system that allows the temperature of the spinning rotor to be monitored and controlled to within ±0.2°C. After completion of an analytical run, the rotor is automatically washed and dried in the rotor cleaning station. Many of the standard clinical analyses, including most of the NADH-linked enzymatic analyses, have been adapted for use with this system.