gebhart/patrepeval huggingface dataset:
Butyrate Transcriptionally Enhances Peptide Transporter (hPepT1) Expression and Activity (2007)

The intestinal epithelial apical membrane transporter, hPepT1, is expressed in the small intestine and in colonic tissue from inflammatory bowel disease, with little or no expression seen in the normal colon. The flora constituents of the colon are involved in inflammatory bowel disease, but no previous study has examined whether bacterial products can affect PepT1 expression and activity. To examine this issue, we stimulated Caco2‐BBE cells with sodium butyrate, a short‐chain fatty acid produced in large amounts by bacterial fermentation. Our results revealed that butyrate dose‐ and time‐dependently increased hPepT1 promoter and transport activities in Caco2‐BBE cells, with maximal activity observed in cells treated with 5 mM butyrate for 24 hours. Under these conditions, we observed a 22‐fold increase in reporter activity from the hPepT1 promoter; this stimulation could be blocked by actinomycin D, confirming transcriptional activation. Furthermore, we observed increased hPepT1 mRNA expression, protein expression and transport activity (measured by the uptake of *Gly‐Sar) in butyrate‐treated cells. Collectively, these data suggest that a bacterial product could induce or regulate hPepT1 expression.
Integrated FSK demodulator with very high sensitivity (2003)

This paper presents a fully integrated highly sensitive frequency-shift keying (FSK) demodulator functioning at a modulation factor of 0.5%-0.1% and below. A dual-feedback phase-locked loop approach provides both very high sensitivity and sufficiently large tuning range. Experimental results in TSMC 0.25-μm CMOS technology demonstrate that Gaussian FSK signals of a modulation factor down to 0.06% can safely be demodulated.
Field Enhancing Projections Produced by the Application of an Electric Field (1965)

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 R. P. Little, S. T. Smith; Field Enhancing Projections Produced by the Application of an Electric Field. Journal of Applied Physics 1 April 1965; 36 (4): 1502–1504. https://doi.org/10.1063/1.1714350 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 ContentAIP Publishing PortfolioJournal of Applied Physics Search Advanced Search |Citation Search
Channel estimation and tracking of an indoor orthogonal multicarrier DS-CDMA system using measured channel delay profiles (2002)

This paper analyzes the down-link channel estimation and tracking of the OM-DS-CDMA systems. The analysis is based on measured channel power delay profiles, in an indoor environment. The channel sounding technique and the equalization strategy are considered. A sounding technique, based on the periodic broadcasting of blocks of trains of pulses, is proposed. At the receiver side, in order to reduce the estimation errors the estimated channel response is linearly interpolated between successive sounding blocks. Finally, an equalization technique, based on the channel inversion, combined with carrier interleaving and adaptive suppression of noisy carriers, is proposed.
Use of Microbiocides in Barnett Shale Gas Well Fracturing Fluids to Control Bacteria Related Problems (2008)

Abstract Bacterial contamination of fracturing fluids leads to a number of serious problems in the oil field. If the fracturing fluids are poorly treated or untreated, sulfate-reducing bacteria (SRB) and acid-producing bacteria (APB) can become established downhole, in production lines, gas / fluid separation, storage equipment, and in the gas gathering and transportation systems. This may result in hydrogen sulfide production, iron sulfide production and microbially influenced corrosion (MIC). Many of these fracturing fluids contain polyacrylamide or sugar-based polymers and other organic compounds which serve as food sources for bacteria. As a consequence of the water volume required for the fracturing process, the water used for preparation of these fluids is obtained from rivers, lakes, or oil field wastewater and is heavily contaminated with bacteria. This paper presents a case history discussing the background survey of various fracturing water sources, the biocide selection process, bacterial mitigation program implementation, monitoring and optimization of a Barnett Shale fracturing biocide program. Various biocides were tested including glutaraldehyde, a glutaraldehyde/quaternary ammonium compound blend, isothiazolin, tetrakishydromethyl phosphonium sulfate (THPS), 2,2-dibromo-3-nitrilopropionamide, and bronopol. THPS consistently performed well providing both quick kill of aerobic, fermentative, and sulfate-reducing bacteria and long-term preservation of the produced fluid. The glutaraldehyde and glutaraldehyde blends did not perform well on the general aerobic and acid-producing bacteria.
Modeling & Simulation of Water Gas Shift Reaction (2012)

The water-gas shift reaction, CO + H2O ↔ CO2 + H2, provides a method for extracting the energy from the toxic CO by converting it into usable H2 along with CO2. For such an reaction depends on activity of catalyst so study of different metal based catalyst including Cu, Fe, Ni, Pd, Rh and Ru is in centre of interest. Generally all gas phase reaction is carried out in catalytic bed and all the reaction kinetics is based on some mechanism and also depends on catalyst property. Some of mechanism and kinetics of catalytic reaction is illustrated from researcher's literature and also from catalyst manufacturer. Mathematical model for such water gas shift reaction is beneficial for study of Concentration profile & Temperature profile. Thus we could get smooth curve for concentration profile by doing modeling and simulation of such catalytic reaction. The main aim of modeling and simulation of any reaction are to provide or compare appropriate kinetics for particular reaction and also sometimes it used to comparison among different catalysts.
Inhibition of Sulfate-Reducing Bacteria by Anthraquinone in a Laboratory Biofilm Column under Dynamic Conditions (2001)

Abstract A relatively simple biofilm column to study biogenic sulfide inhibition under dynamic (flow) conditions is described. Results of studies aimed at evaluating anthraquinone, a biostatic inhibitor of sulfate-reducing bacteria, in simulated oilfield water treatment conditions are presented. The study results have indicated that the biofilm columns are an excellent screening tool for assessing the effects of interactions between oilfield water treatment chemicals on biofilm activity. Anthraquinone was found to be a very effective inhibitor of sulfide production. Co-treatments or sequential treatments with specific oilfield chemicals were found to synergistically increase efficacy, while others were detrimental. Contact of anthraquinone-treated biofilms by crude oil was found to limit sulfide inhibition, although short-term efficacy was unaffected. Anthraquinone was found to biodegrade in the biofilm, apparently leading to the decrease in effectiveness with time.
The IRIDIUM communications system (2002)

The IRIDIUM communications system is to be a global, digital, satellite-based, personal communications system primarily intended to provide low-density, portable service via hand-held subscriber units, using low-profile antennas. Calls could be made and received anywhere in the world with a personal, pocket-size, portable unit. A constellation of small satellites are to be internetted to form the network's backbone. Small, battery-powered, cellular-telephone-like user units are to communicate directly with the satellites. Terrestrial gateways are to interface the satellite network with the Public Switched Telephone Network. The system is intended to complement the terrestrial telephone network in densely populated areas by providing a similar service everywhere else in the world. Brief descriptions are given of the components of IRIDIUM: the G6-satellite constellation, the system control facility, the gateways, the subscriber units, and the communication networks.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Sneakers: The Complete Collectors' Guide (2005)

The once secret world of the sneaker collector has exploded into popular culture, with a whole army of fans hungry for the rarest shoes, the latest designs or reissued classics in a never-ending myriad of colourways and materials. Sneakers is the indispensable and definitive guide to the very best and most collectible sneaker designs. It features: over 550 specially taken colour photographs; over 180 sneaker designs from eleven leading brands, chosen for the mark they have made on sneaker culture worldwide, and a selection of shoes from unforgettable and up-and-coming brands; comprehensive collectors information, with an invaluable introduction, brand histories and practical tips on how to create and care for your collection; a fully illustrated glossary and chronology; and, a directory for collectors shops, resources and websites. This encyclopaedic book will appeal to both the novice collector and the hardcore sneaker freak.
ChemInform Abstract: Stable and Metastable Phase Relations in the System Alumina‐Zirconia‐ Yttria. (1997)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 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.
On the Microstructures of Thermally Sprayed “Peek” Polymer (1998)

Abstract Polymer coatings find increasing interest for anticorrosion applications and others. Thanks to its extraordinary properties (high chemical stability, low creep rate and good electrical resistivity at relatively high temperature) PEEK (Polyetheretherketone) polymer is now considered as a challenging matierial. In this work, PEEK polymer powder was thermally sprayed with different processes. Particle impacts were observed and coating was analyzed by infrared spectrometry. The temperature of the substrate was shown to play an important role in the formation of dense and continuous coatings. Thermal degradation during spraying produces new carbonyl species due to chain scissions; but the amount of decomposition could be controlled from the choice of spraying conditions.
A programmer's view of the 80960 architecture (2003)

The 80960 processor integrates many architectural features normally found in RISC (reduced-instruction-set computer) processors with others found in more traditional architectures. The result is a processor providing high performance while presenting few difficulties for either applications or compiler writers. A discussion is presented of the programming model of the 960, including aspects of the instruction set and the register architecture. Techniques for effective use of the 960 from both assembly language and high-level languages are discussed, including the subroutine calling sequence designed for the architecture.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Automating ASIC design-for-testability-the VLSI Test Assistant (2003)

A description is given of the VLSI Test Assistant, an interactive CAD (computer-aided design) tool which automatically adds testability logic to application-specific integrated circuits. In order to give the designer complete control over the hardware modification process the Test Assistant allows the designer to override any of the decisions made by it. Furthermore, the schematics that are generated for the modified circuit allow the user to see the added hardware. The current version of the Test Assistant supports functional block isolation using multiplexers and built-in self-test for RAMs.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
The potential role of the HIV-1 immunogen (Remune®) as a therapeutic vaccine in the treatment of HIV infection (2003)

Immune-based therapies, such as therapeutic vaccination, that might preserve, restore, enhance and induce new HIV-specific immunologic responses are currently being explored. HIV-specific immunotherapy with Remune (The Immune Response Corp.) offers the opportunity to boost immune responses against HIV-1. The clinical trial program in a wide range of subjects has established the efficacy of Remune in stimulating an appropriate immune response in HIV-positive individuals. Furthermore, a recent unblinded study conducted in Europe has documented a significant effect of Remune on viral load. Evidence regarding clinical end points is more difficult to collect. The same studies have revealed no serious safety issues in a total of more than 2000 Remune-treated patients. It is therefore reasonable to suggest that the risk-benefit ratio of Remune could be positive.
Amberlite IRA900F as a Solid Fluoride Source for a Variety of Organic Transformations under Solvent‐Free Conditions (2008)

Abstract We have reported that Amberlite IRA900F (Amb‐F) is an efficient metal‐free catalyst for the activation of Si–N and Si–O bonds and a mild base in a variety of organic transformations under solvent‐free conditions, such as the addition of TMSN 3 to ( E )‐2‐aryl‐1‐cyano‐1‐nitroethenes, nitriles, α,β‐unsaturated acids and their esters, and the addition of dimethylsilylketene acetal and ethyl nitroacetate to β‐nitrostyrenes.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
DCNN Augmentation via Synthetic Data from Variational Autoencoders and Generative Adversarial Networks (2018)

Deep convolutional neural networks have recently demonstrated incredible capabilities in areas such as image classification and object detection, but they require large datasets of quality pre-labeled data to achieve high levels of performance. Almost all data is not properly labeled when it is captured, and the process of manually labeling large enough datasets for effective learning is impractical in many real-world applications. New studies have shown that synthetic data, generated from a simulated environment, can be effective training data for DCNNs. However, synthetic data is only as effective as the simulation from which it is gathered, and there is often a significant trade-off between designing a simulation that properly models real-world conditions and simply gathering better real-world data. Using generative network architectures, such as Generative Adversarial Networks (GANs) and Variational Autoencoders (VAEs), it is possible to produce new synthetic samples based on the features of real-world data. This data can be used to augment small datasets to increase DCNN performance, similar to traditional augmentation methods such as scaling, translation, rotation, and adding noise. In this paper, we compare the advantages of synthetic data from GANs and VAEs to traditional data augmentation techniques. Initial results are promising, indicating that using synthetic data for augmentation can improve the accuracy of DCNN classifiers.
Entry vocabulary (2001)

This paper describes a search technology which enables improved search across diverse genres of digital objects -- documents, patents, cross-language retrieval, numeric data and images. The technology leverages human indexing of objects in specialized domains to provide increased accessibility to non-expert searchers. Our approach is the reverse-engineer text categorization to supply mappings from ordinary language vocabulary to specialist vocabulary by constructing maximum likelihood mappings between words and phrases and classification schemes. This forms the training data or 'entry vocabulary'; subsequently user queries are matched against the entry vocabulary to expand the search universe. The technology has been applied to search of patent databases, numeric economic statistics, and foreign language document collections.
Assessment of MOCVD- and MBE-growth GaAs for high-efficiency solar cell applications (1990)

A critical assessment of the photovoltaic quality of epitaxial GaAs grown by metal-organic chemical vapor deposition (MOCVD) and by molecular-beam epitaxy (MBE) is reported. Epitaxial films of nominally identical structure were grown by the two techniques and were fabricated into p-n heteroface solar cells. The 0.5-cm by 0.5-cm cells were then characterized and compared. The MOCVD-grown films produced independently verified record efficiency cells of 24.8% under 1-sun AM1.5 global conditions while the MB-grown films produced similarly high efficiencies of 23.8%. The material qualities of the two films in terms of minority-carrier diffusion lengths and surface recombination velocities were quite comparable. These results demonstrate that the quality of MBE-grown films can be quite comparable to the best MOCVD-grown films and that they are suitable for high-efficiency solar cells.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Total Synthesis and Stereochemical Assignment of Baringolin (2013)

The thiopeptide antibiotic baringolin has been synthesized, and its structure and stereochemistry have been confirmed. The use of a strategy based on palladium-catalyzed cross-couplings permitted a modular construction of this natural product.
Coherent laser-beam addition: an application of binary-optics technology (1988)

Coherent laser-beam addition offers the potential for extremely bright optical sources by combining the power from many individual lasers. Binary-optical elements - surface - relief structures etched into optical substrates by integrated-circuit techniques - have been sucessfully employed in three optical beam addition systems. The techniques can produce diffraction-limited laser sources from large-scale two-dimensional laser arrays. Future electrooptic systems, ranging from communications to space surveillance, can benefit from the new high-power laser sources made possible by coherent laser-beam addition.
Joint Wheel-Slip and Vehicle-Motion Estimation Based on Inertial, GPS, and Wheel-Speed Sensors (2015)

Joint wheel-slip and vehicle-motion estimation is considered, based on measurements from wheel encoders, an inertial measurement unit, and a global positioning system (GPS). The proposed strategy effectively employs the Rao-Blackwellized particle-filtering framework using a kinematic model. Key variables in active safety systems, such as longitudinal velocity, roll angle, and wheel slip for all four wheels, are estimated. The results from a demanding field test show the efficacy of the approach; the wheel slip and velocity can be estimated with an absolute accuracy of 0.018 and 0.25 m/s, respectively, measured as time-averaged root-mean-square errors, in periods of simultaneous aggressive braking and cornering. The corresponding differences between best case and worst case performances are 0.005 and 0.1 m/s. The results from a double lane-change maneuver indicate reliable velocity and slip estimation in periods of GPS outage.
Reflex Suppression of Gastric Motility dúring Laparotomy and Gastroduodenal Nociceptive Stimulation (1979)

The effects on gastric motility of laparotomy or of nociceptive stimuli directed to the antro-duodenal area were studied in anaesthetized cats. A diathermic lesion of the duodenal or gastric antral wall induced pronounced gastric relaxation, which could either fade off within 0.5--1.5 h or persist for several hours. This gastric relaxatory response persisted after administration of antiadrenergic and anticholinergic drugs but was eliminated by vagotomy or cold blockade of the vagi. Vagotomy performed during the relaxed gastric state after diathermy immediately resulted in a more or less complete recovery of gastric tone. Blunt mechanical stimulation of the duodenum also caused a prompt gastric relaxation, which showed the same characteristics as the response to diathermy as regards the effects of nerve-blocking drugs and vagotomy. The laparotomy incision per se caused temporary inhibition of rhythmic gastric contraction, but this effect was largely abolished if atropine or guanethidine had been given. It is concluded that nociceptive stimuli against the gastric or duodenal wall induce, besides a sympathoadrenergic reflex inhibition of gastric motility, a profound long-lasting gastric relaxation via a reflex activation of the vagal nonadrenergic inhibitory fibres. This vagally mediated relaxation of the stomach is likely to contribute to the suppression of gastric motility seen in 'paralytic ileus'.
Evidence of Porphyrin‐Like Structures in Natural Melanin Pigments Using Electrochemical Fingerprinting (2016)

Eumelanins are extended heterogeneous biopolymers composed of molecular subunits with ambiguous macromolecular topology. Here, an electrochemical fingerprinting technique is described, which suggests that natural eumelanin pigments contain indole-based tetramers that are arranged into porphyrin-like domains. Spectroscopy and density functional theory calculations suggest that sodium ions undergo occupancy-dependent stepwise insertion into the core of porphyrin-like tetramers in natural eumelanins at discrete potentials.
RESEARCH (1955)

RETURN TO ISSUEPREVNewsNEXTRESEARCHUse of Radiation to Promote Chemical Reactions ...Not new, despite the flurry of interest in recent years; today's research emphasis is on beta and gamma rays. Look for a number of industrial chemical reactions utilizing gamma radiation because of its large potential supply and penetrating powerJOSEPH J. MARTINView Author Information University of Michigan Ann Arbor, Mich.Cite this: Chem. Eng. News 1955, 33, 14, 1424–1428Publication Date (Print):April 4, 1955Publication History Published online5 November 2010Published inissue 4 April 1955https://pubs.acs.org/doi/10.1021/cen-v033n014.p1424https://doi.org/10.1021/cen-v033n014.p1424newsACS PublicationsCopyright © 1955 AMERICAN CHEMICAL SOCIETYArticle Views7Altmetric-Citations3LEARN 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 options SUBJECTS:Radiation Get e-Alerts
Five-level T-type inverter based on multi-state switching cell (2012)

In this paper, a new T-type inverter topology based on multi-state switching cell is proposed. The topology presents five-levels voltage before of output LC filter, providing high order harmonics that are easily filtered. In this topology, the output filter ripple frequency is twice the switching frequency, therefore reducing the magnetic weight and volume. Other characteristics of the inverter are current sharing through the devices, facilitating its losses dissipation, due to increased contact area and few involved components in the current flow path. In order to verify its feasibility, a design example as well as experimental results for a 5kW prototype is presented in this work.