gebhart/patrepeval huggingface dataset:
Closure of Laparoscopic Trocar Site Wounds with Cyanoacrylate Tissue Glue: A Simple Technical Solution (2001)

Cyanoacrylate-based tissue glue has been widely used for many years around the world, and was recently approved for use in the United States, mainly for skin cuts and lacerations. Other applications were described, in different surgical situations. Although ideal for small, clean incisions, its use in laparoscopic surgery is currently limited. Over a year period, 100 patients with more 250 trocar site wounds had their wounds glued using histoacryl. Infection rate was extremely low (one case), and partial dehiscence of the wound happened in two patients, where wound edge approximation was not optimal. Cosmetic results were excellent and patient satisfaction was high, as no sutures had to be removed. Glue application is easy and quick, with no risk of needle sticks, and it is a viable option for laparoscopic wound closure.
Succinimide Formation from Aspartyl and Asparaginyl Peptides as a Model for the Spontaneous Degradation of Proteins (1989)

Nonenzymatic intramolecular reactions can result in the deamidation, isomerization, and racemization of protein and peptide asparaginyl and aspartyl residues via succinimide intermediates. To understand the sequence dependence of these reactions, we measured the rate of succinimide formation in a series of synthetic peptides at pH 7.4. These peptides (Val-Tyr-Pro-X-Y-Ala) contained an internal aspartyl, asparaginyl, aspartyl beta-methyl ester, or aspartyl alpha-methyl ester residue (X) followed by a glycyl, seryl, or alanyl residue (Y). The rates of succinimide formation of the asparaginyl peptides were found to be 13.1-35.6 times faster than those of the aspartyl peptides. The rates of succinimide formation for the glycyl peptides were 6.5-17.6 times faster than those of the alanyl peptides, while the rates for the seryl peptides were 1.6-4.5 times faster than those of the alanyl peptides. The overall 232-fold range in these reaction rates for aspartyl and asparaginyl residues suggests that sequence can be an important determinant in their stability in flexible peptides. In proteins, there may be a much larger range in the rates of succinimide formation because specific conformations may greatly enhance or inhibit this reaction.
Cyclic Phosphates. IV.<sup>1</sup> Ribonucleoside-3',5' Cyclic Phosphates. A General Method of Synthesis and Some Properties (1961)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCyclic Phosphates. IV.1 Ribonucleoside-3',5' Cyclic Phosphates. A General Method of Synthesis and Some PropertiesM. Smith, G. I. Drummond, and H. G. KhoranaCite this: J. Am. Chem. Soc. 1961, 83, 3, 698–706Publication Date (Print):February 1, 1961Publication History Published online1 May 2002Published inissue 1 February 1961https://pubs.acs.org/doi/10.1021/ja01464a039https://doi.org/10.1021/ja01464a039research-articleACS PublicationsRequest reuse permissionsArticle Views743Altmetric-Citations160LEARN 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
In Vivo Distribution of Human Adipose-Derived Mesenchymal Stem Cells in Novel Xenotransplantation Models (2006)

The potential for human adipose-derived mesenchymal stem cells (AMSC) to traffic into various tissue compartments was examined using three murine xenotransplantation models: nonobese diabetic/severe combined immunodeficient (NOD/SCID), nude/NOD/SCID, and NOD/SCID/MPSVII mice. Enhanced green fluorescent protein was introduced into purified AMSC via retroviral vectors to assist in identification of cells after transplantation. Transduced cells were administered to sublethally irradiated immune-deficient mice through i.v., intraperitoneal, or subcutaneous injection. Up to 75 days after transplantation, tissues were harvested and DNA polymerase chain reaction (PCR) was performed for specific vector sequences as well as for human Alu repeat sequences. Duplex quantitative PCR using human beta-globin and murine rapsyn primers assessed the contribution of human cells to each tissue. The use of the novel NOD/SCID/MPSVII mouse as a recipient allowed rapid identification of human cells in the murine tissues, using an enzyme reaction that was independent of surface protein expression or transduction with an exogenous transgene. For up to 75 days after transplantation, donor-derived cells were observed in multiple tissues, consistently across the various administration routes and independent of transduction parameters. Tissue localization studies showed that the primary MSC did not proliferate extensively at the sites of lodgement. We conclude that human AMSC represent a population of stem cells with a ubiquitous pattern of tissue distribution after administration. AMSC are easily obtained and highly amenable to current transduction protocols for retroviral transduction, making them an excellent avenue for cell-based therapies that involve a wide range of end tissue targets.
<title>Digital Slot Scan Mammography Using CCDs</title> (1987)

A desirable mammography imaging system should offer high spatial resolution, high sensitivity, a wide dynamic range and a means of limiting detected x-ray scatter. Significant scatter reduction can be obtained with a slot scan acquisition format with minimal attenuation of the primary beam. A potential receptor for digital mammography is comprised of a x-ray screen optically coupled directly to a CCD detector. The dynamic range of our current front-illuminated CCD is about 400 using factory supplied readout circuitry. The high spatial resolution of the CCD (22.4 1p/mm at Nyquist frequency) and the x-ray screen are reduced by poor optical contact at this time. X-rays which interact with the2CCD generate a moderate signal (25-30% of the optical signal) when a thin (22mg/cm<sup>2</sup>) Gd<sub>2</sub>O<sub>2</sub>S:Tb screen is used. Image segments of a Kodak breast phantom were acquired with both the screen-CCD detector and the CCD detector alone. Substantial improvements in detector performance could be achieved by utilizing a back-illuminated CCD with a slow scan, correlated double sampled readout and a structured x-ray screen. The concept of direct optical coupling with structured screens can be implemented in high energy digital scanning systems.
Development and analyse of Electronic Transformers (2010)

Electronic Transformers (ECT, EVT)are a sort of sensors of reactive agents in the reactive layer of the Strategic Power Infrastructure Defense system, are sense organs of the SPID in the Smart Grid, are a sort of key devices for the Smart Grid. The past Electromagnetic Transformers can not satisfy desire. With rapid development of the fiber and sensor technique, the technology based on fiber isolation and transmission is more mellow and perfect. This paper expounds development and sorts of Electronic Transformers, analyses the characteristic and engineering application instance between two kinds of Electronic Transformers, points out the problem in Electronic Transformers production, bring forward the development direction and regarded problem of Electronic Transformers research.
Vibration Response and Wave Propagation in Periodic Structures (1971)

The vibration response of periodic, beam-like structures has conventionally been studied either by transfer matrix or normal mode methods. The latter method becomes unwieldy if the damping and modal density are high, whereas the former method does not lend itself readily to giving physical understanding. It is shown in this paper that a special class of flexural wave groups can exist in periodic structures; an understanding of them permits a ready formulation of the response-calculation problem. The formulation can be applied to both infinite and finite structures, and the amount of damping present may have any value. The method is specially well adapted to studying response due to convected pressure fields and loadings and gives great physical insight. Illustrations are given relating to beams resting at regular intervals on flexible supports and to aeronautical rib-skin structures. Some calculated values of vibration response are presented and discussed and optimum structural configurations are considered.
The modeling of excimer laser particle removal from hydrophilic silicon surfaces (2000)

We summarize experimental results on the successful removal of submicron-sized polystyrene latex, carboxylate-modified latex, SiO2, and Al2O3 particles from hydrophilic silicon surfaces by excimer laser, using both dry and steam cleaning; the cleaning and damage thresholds have also been determined for these particles. Adhesion and removal models for an ideal sphere particle, that include van der Waals forces, hydrogen bonding, and thermoelastic effects, theoretically explain the laser cleaning results. Two models of the removal force due to the explosive evaporation of liquid film have been calculated and compared. The effects of both asperities on the particle surface and particle aggregation have also been considered. The results of the calculations show that even those surface asperities which are small compared with the particle dimension can cause a large reduction in both adhesion and thermoelastic removal forces. The theoretical predictions are consistent with the experimental observations.
Decoupling multivariable self-tuning controller for varying time delays (1989)

In the paper, an implicit MIMO self-tuning controller is proposed for processes with unknown or varying time delays. The algorithm presented is designed to cope with variations in the time delays associated with both the control input and the measurable disturbance signal. The controller combines the classical control strategy of pole assignment with the optimal approach of self-tuning control and realises the decoupling of the control loops dynamically as well as in the steady state. The advantages of the new MIMO algorithm are illustrated with two examples.
Separation of Ethylene from Ethane Using Perfluorosulfonic Acid Ion-Exchange Membranes (1996)

Facilitated transport of ethylene through Ag+-containing perfluorosulfonic acid ion-exchange membranes results in high separation factors for ethylene over ethane. Ethylene of higher than 99 percent purity was obtained from a 50:50 mixture of ethylene and ethane at 25 °C and feed and permeate pressures of 1 atmosphere. An ethylene permeability of over 2000 Barrer was obtained. Two different types of perfluorosulfonic acid membranes were studied to determine the importance of ionic site density and water content on membrane performance. The effect of temperature on the transport mechanism was also studied over the range of 5-35 °C. In addition, the transport data obtained at high pressure show carrier-saturation and membrane compaction phenomena.
Análisis de las asociaciones de ahorro y préstamo (1965-1973) (1973)

Inversiones en viviendas, instituciones promotoras del ahorro.
Unravelling the Mechanism of RNA-Polymerase Forward Motion by Using Mechanical Force (2005)

Polymerases form a class of enzymes that act as molecular motors as they move along their nucleic acid substrate during catalysis, incorporating nucleotide triphosphates at the end of the growing chain and consuming chemical energy. A debated issue is how the enzyme converts chemical energy into motion [J. Gelles and R. Landick, Cell 93, 13 (1998)]. In a single molecule assay, we studied how an opposing mechanical force affects the translocation rate of T7 RNA polymerase. Our measurements show that force acts as a competitive inhibitor of nucleotide binding. This result is interpreted in the context of possible models, and with respect to published crystal structures of T7 RNA polymerase. The transcribing complex appears to utilize only a small fraction of the energy of hydrolysis to perform mechanical work, with the remainder being converted to heat.
Studies on antigen-induced arthritis in mice. II. Immunologic correlates of arthritis susceptibility in mice. (1977)

Antigen-induced arthritis was developed in mice as a model of human rheumatoid arthritis by using methylated bovine serum albumin (mBSA) as antigen. It was found that most strains were susceptible, whereas CBA mice were resistant. We therefore investigated the humoral and cell-mediated immune responses to mBSA in resistant mice (CBA) and susceptible mice (exemplified by C57BL) to determine whether these were associated with susceptibility to arthritis. The resistant strain (CBA) differed from the suceptible strains in the following respects. First, there was a lower humoral immune response to mBSA as measured by passive hemagglutination, but this could be overcome by a larger immunogenic dose. Secondly, there were differences in response to low doses of DNP-mBSA after mBSA carrier preimmunization. Thirdly, there were striking differences in delayed-type hypersensitivity (DTH) to mBSA as determined by a radioisotopic assay in vivo; the response of CBA mice occurred early, at 5 days, declined quickly, and was weaker, whereas that of C57BL mice developed later and was long sustained. Genetic studies of the DTH response with hybrids and backcrosses showed an oligogenic control of immune responsiveness, with one gene being linked to the H-2b allele of the susceptible C57BL mice, and another being independent of the H-2 complex. Our findings indicate that in mice, susceptibility to antigen-induced arthritis with mBSA correlates with a higher responder state to this antigen, and that T cells are the major if not the only determinant of the high responder state.
Isolation and Properties of the Factor Responsible for Increased Capillary Permeability in Inflammation. (1937)

For the sake of convenience the name Leukotaxin is tentatively proposed for this active crystalline nitrogenous substance which is evidently released by injured tissue and is readily recovered in inflammatory exudates. “Leukotaxine”per se appears to be capable of rapidly initiating the usual sequences of the inflammatory reaction first by inducinw a prompt increase in capillary permeability and secondly by causing an extremely rapid aggregation and migration of leucocytes through the endothelial wall.
Effect of Ultrasonic Irradiation on Hydration of MgO Powder. (1993)

High-power ultrasound was applied during the hydration of MgO fine powders in order to see the effect of ultrasound in a heterogeneous fluid where the dissolution of MgO particles and the precipitation of Mg(OH)2 are included. The results obtained showed that the irradiation of ultrasound fairly promotes the dissolution of MgO, which is the rate-determining step in the reaction, and that it promotes the nucleation of Mg(OH)2, which has resulted in the reduction of crystallite sizes of the Mg(OH)2 precipitated.
Analog Matching of Colored Sources to Colored Channels (2006)

Uncoded transmission provides a simple, delay-less and robust scheme for communicating a Gaussian source over a filter channel under the mean squared error (MSE) distortion measure. Unfortunately, its performance is usually inferior to the all-digital solution, consisting of a rate-distortion code for the source followed by a capacity achieving code for the channel. The performance loss of uncoded transmission comes from the fact that except for very special cases, it is impossible to achieve simultaneous matching of source to channel and channel to source by linear means. We show that by combining prediction and modulo-lattice arithmetic, we can match any stationary Gaussian source to any inter-symbol interference, colored-noise Gaussian channel, hence we achieve Shannon's optimum attainable performance R(D) = C. This scheme is based upon a novel analog modulo-lattice solution to the joint source-channel coding problem for a Gaussian Wyner-Ziv source and a dirty-paper channel
Spontaneous course of ST-segment elevation in acute anterior myocardial infarction. (1979)

The spontaneous course of ST-segment elevation (sigmaST) in 24 patients with acute anterior myocardial infarction (AMI) was studied by precordial ST-segment mapping, which was recorded at 2-hour intervals during the first 48 hours after admission. Change of sigmaST between two registrations was expressed as mV/hr, and was compared with clinical and hemodynamic parameters, course of MB-CK curve, calculated infarct mass and arrhythmias. After an initial rapid increase, there was a decrease of sigmaST, which reaches a plateau-like curve approximately 12 hours after the onset of chest pain. A second new increase of sigmaST exceeding a value of 0.6 mV/hr correlates well with extension of necrosis, verified by re-elevation of MB-CK. During the first 2 days, extension of necrosis could be detected in 50% of our patients. As new ischemic episodes and extension of necrosis in AMI occur frequently and are promptly indicated by an increase of sigmaST, the physician should, while monitoring therapeutic interventions,...
Demonstration of output-port contention resolution in a WDM switching node based on all-optical wavelength shifting and subcarrier-multiplexed routing-control headers (1997)

We demonstrate near-error-free output-port contention resolution in a WDM switching node based on all optical wavelength shifting. Contention between incoming 1-Gb/s data packets is resolved in real-time by comparing subcarrier-multiplexed control headers on 2 input ports and then all-optically wavelength-shifting one input signal to a free wavelength if contention occurs. Additionally, the 50-Mb/s subcarrier header itself is replaced and updated with new routing information.
Ueber die Methylirung des Hydrazinhydrats (1898)

Von den drei friiherl) f5r
Study of Highly Efficient Algorithms for the Character Recognition System of Medicine Bottle Label (2014)

This paper studied character recognition on medicine bottle label containing batch number, production date and expiry date. It mainly consisted of character location, character segmentation and character recognition. Firstly, it preprocessed the image of medicine bottle label for the following procedures; secondly, it obtained the general character region by contour tracing and realized the precise location by horizontal projection algorithm; then it located character adhesion region by vertical projection algorithm and segmented the merged characters by drop fall algorithm; finally, it adopted Karhunen-Loeve transform to extract character features from the subclasses of coarse classification and accurately recognized characters by the improved BP algorithm. Experiments show that the system can recognize the bottle label characters quickly and accurately, it is of great practical value.
Research on Holographic Sensors and Novel Photopolymers at the Centre for Industrial and Engineering Optics (2013)

Research on Holographic Sensors and Novel Photopolymers at the Centre for Industrial and Engineering Optics
Proton radiation effects in 4H-SiC diodes and MOS capacitors (2004)

Proton irradiation is used to probe the physics of 4H-silicon carbide (SiC) Schottky barrier diodes (SBDs) and negative channel metal oxide semiconductor (nMOS) capacitors for the first time. Both 4H-SiC SBD diodes and SiC MOS structures show excellent radiation tolerance under high-energy, high-dose proton exposure. Unlike for SiC JBS diodes, which show a strong increase in series resistance after proton irradiation, these SiC SBDs show very little forward bias I--V degradation after exposure to 63.3 MeV protons up to a fluence of 5/spl times/10/sup 13/ p/cm/sup 2/. An improvement in reverse leakage current after irradiation is also observed, which could be due to a proton annealing effect. The small but observable increase in blocking voltage for these SiC SBDs is attributed to a negative surface charge increase, consistent with earlier gamma results. The resultant Q/sub eff/ change of 4H-SiC nMOS capacitors under proton irradiation was used to quantify the radiation induced changes to the blocking voltage in the SBD diodes in MEDICI simulations, and showed a good agreement with the experimental data. Characterization of these capacitors also suggests that 4H-SiC MOS structures are radiation hard.
Fast‐marching eikonal solver in the tetragonal coordinates (1998)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1998Fast‐marching eikonal solver in the tetragonal coordinatesAuthors: Yalei SunSergey FomelYalei SunStanford University and Sergey FomelStanford Universityhttps://doi.org/10.1190/1.1820321 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1820321FiguresReferencesRelatedDetailsCited ByThreshold-Based New Segmentation Model to Separate the Liver from CT Scan Images28 July 2020 | IETE Journal of Research, Vol. 8High-precision Joint 2D Traveltime Calculation for Seismic Processing1 October 2018 | Earth Sciences Research Journal, Vol. 22, No. 4Flow Simulation of Complex Fracture Systems With Unstructured Grids Using the Fast Marching MethodChangdong Yang, Xu Xue, Michael J. King, and Akhil Datta-Gupta12 September 2017Rapid Simulation of Naturally Fractured Unconventional Reservoirs with Unstructured Grids Using the Fast Marching Method20 February 2017Fast-Marching Methods for Complex Grids and Anisotropic Permeabilities: Application to Unconventional Reservoirs18 February 2013An expanding-wavefront method for solving the eikonal equations in general anisotropic mediaYue Wang, Tamas Nemeth, and Robert T. Langan28 August 2006 | GEOPHYSICS, Vol. 71, No. 5Eikonal solver in the celerity domainGeophysical Journal International, Vol. 162, No. 1On anelliptic approximations for qP velocities in VTI mediaGeophysical Prospecting, Vol. 52, No. 33‐D imaging using higher order fast marching traveltimesAlexander Mihai Popovici and James A. Sethian25 March 2002 | GEOPHYSICS, Vol. 67, No. 2 SEG Technical Program Expanded Abstracts 1998ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1998 Pages: 2092 publication data© 1998 Copyright © 1998 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 06 Jan 2005 CITATION INFORMATION Yalei Sun and Sergey Fomel, (1998), "Fast‐marching eikonal solver in the tetragonal coordinates," SEG Technical Program Expanded Abstracts : 1949-1952. https://doi.org/10.1190/1.1820321 Plain-Language Summary PDF DownloadLoading ...
Growth and properties of GaN and AlN layers on silver substrates (2005)

We report on the preparation and properties of GaN and AlN layers grown by molecular-beam epitaxy on silver metal substrates. X-ray diffraction rocking curves show polycrystalline character of GaN with high preferential GaN(11-22) orientation. An intermetallic phase of Ga3Ag is found at the GaN∕Ag interface. On the other hand, AlN layers exhibit a monocrystalline structure with a growth direction of (0002). Schottky diodes prepared on GaN layers show good rectifying behavior and relatively low leakage current (∼10−3A∕cm2). These results indicate that the III-nitride growth on metallic substrates might be used for low-cost and large-area electronic and photonic devices.