gebhart/patrepeval huggingface dataset:
Application of Rotary Forging to Consolidation of Metal Powders (1992)

The consolidation of metal powders using a nutation-spin rotary forging machine is a two stage process. An initial, uniaxial, compaction stage is followed by a rotary stage which introduces shear deformation into the compact. Fundamental appreciations have been gained of the geometric, mechanical, and materials aspects of each stage and the ways which they interact. Particle geometry plays an important role: optimum geometry seems to be needles with aspect ratios close to 60:1. Enforced adoption of split die techniques to cope with local compaction pressures of several gigapascals has opened a range of possibilities for part shapes which is wider than that normally limiting PM parts. Re-entrant features, lugs, and similar features can be produced. Flow of material to replicate such features is brought about by high local pressures and shear stresses. Differing combinations of side wall segments can be used in a bolster to generate a flexible manufacturing cell. Materials successfully consolidated range from aluminium to tool steels. When applied to Distaloy and Astaloy types of, powders, product properties after sintering have been shown to be comparable with those of hot powder forgings. PM/0563
Molecular packing and stability in the gel phase of curved phosphatidylcholine vesicles (1981)

Abstract The instability of small unilamellar phosphatidylcholine vesicles in the gel phase can be understood as the effect of gel phase structural parameters on the intrinsic packing asymmetry of the vesicles.
IBM's Experiences with GroupSystems (1990)

IBM has used GroupSystems, a collection of software tools that support group work developed at the University of Arizona, to conduct both intra- and inter-organizational sessions within IBM and among IBM associates and customers. Research conducted by the University of Arizona and IBM indicates that this information technology that supports parallel, anonymous, and collaborative group communication can aid tactical and strategic planning, human resource management, negotiation, and general meeting activities. Use of GroupSystems tools in these sessions enabled participants with widely varying backgrounds, motivations, and personal agendas to effectively and efficiently address complex problems. Problems addressed included quality improvement, customer account planning, opinion survey feedback, resource allocation, application implementation, contract performance reviews, and the establishment of standards.
Stability of recombinant plasmids carrying the threonine operon in Escherichia coli. (1984)

The stability of recombinant strains of Escherichia coli carrying hybrid plasmids comprised of pBR322 and the threonine operon (thrA, thrB and thrC) of E. coli was examined. (1) Recombinant strains were classified into two types according to the direction of the an inserted DNA fragment containing the threonine operon, which was cloned into the HindIII site of pBR322. Type I had a more stable pBR322-thr hybrid plasmid, and Type II had a less stable one and easily lost it. L- Threonine productivity of Type I strains was much higher than that of Type II, presumably depending on the stability of each plasmid. (2) Repeated transfer of the host cells carrying pAJ294, a pBR322-thr hybrid plasmid obtained from a Type I strain, without any selective pressure caused a serious loss of the plasmid. Culturing at high temperature or in a poor medium accelerated the loss, and it was prevented by the addition of ampicillin or tetracycline to the culture medium. (3) pAJ294 was stable under some storage conditions, stocking on an agar medium or after lyophilization. (4) pAJ294 was fairly stable in L-threonine production medium at 30°C during growth of up to approximately 17 generations without any antibiotic.
An implanted recombination hot spot stimulates recombination and enhances sister chromatid cohesion of heterologous YACs during yeast meiosis. (1994)

Heterologous yeast artificial chromosomes (YACs) do not recombine with each other and missegregate in 25% of meiosis I events. Recombination hot spots in the yeast Saccharomyces cerevisiae have previously been shown to be associated with sites of meiosis-induced double-strand breaks (DSBs). A 6-kb fragment containing a recombination hot spot/DSB site was implanted onto two heterologous human DNA YACs and was shown to cause the YACs to undergo meiotic recombination in 5-8% of tetrads. Reciprocal exchanges initiated and resolved within the 6-kb insert. Presence of the insert had no detectable effect on meiosis I nondisjunction. Surprisingly, the recombination hot spots acted in cis to significantly reduce precocious sister-chromatid segregation. This novel observation suggests that DSBs are instrumental in maintaining cohesion between sister chromatids in meiosis I. We propose that this previously unknown function of DSBs is mediated by the stimulation of sister-chromatid exchange and/or its intermediates.
HSOCLCUG (1988)

In 1975 the Heatlh Sciences OCLC Users Group (HSOCLCUG) was organized in order to establish a forum for communication, to provide information about following the National Library of Medicine cataloging practices in the OCLC Cataloging Subsystem, to maintain close relations with the National Library of Medcine and the Medical Library Association and to represent its constituency to OCLC. A newsletter is issued and an annual meeting is held to keep the membership informed. As new OCLC subsystems have been implemented, HSOCLCUG has studied their impact on health sciences libraries. Interests of the group have broadened to include interlibrary loan, serials control, retrospective conversion, and automation. There are now more than two hundred and fifty members.
NS1′ of Flaviviruses in the Japanese Encephalitis Virus Serogroup Is a Product of Ribosomal Frameshifting and Plays a Role in Viral Neuroinvasiveness (2009)

Flavivirus NS1 is a nonstructural protein involved in virus replication and regulation of the innate immune response. Interestingly, a larger NS1-related protein, NS1', is often detected during infection with the members of the Japanese encephalitis virus serogroup of flaviviruses. However, how NS1' is made and what role it performs in the viral life cycle have not been determined. Here we provide experimental evidence that NS1' is the product of a -1 ribosomal frameshift event that occurs at a conserved slippery heptanucleotide motif located near the beginning of the NS2A gene and is stimulated by a downstream RNA pseudoknot structure. Using site-directed mutagenesis of these sequence elements in an infectious clone of the Kunjin subtype of West Nile virus, we demonstrate that NS1' plays a role in viral neuroinvasiveness.
Constant-Beamwidth One-Octave Bandwidth End-Fire Line Array of Loudspeakers (1995)

Broad-band acoustic signals, such as voice and music, intended for entertainment require uniform coverage over an audience such that the spectral distribution in the area remains constant. Thus the effective beamwidth of the acoustic source needs to be constant with frequency. The ideal solution to array-beamwidth control would be to create a coverage pattem that has one main lobe with small or no sidelobes, with the entire pattern remaining constant with frequency. Such a method for two-dimensional beamwidth control over an octave is presented. The methodology is most flexible and useful when utilizing digital signal processing, since the element responses could be derived with loudspeaker response corrections as part of the synthesis task. The relatively simple algebra of line array superposition yields constant beamwidths very close to theory (when the driver size is accounted for). Considering the strong match with predicted beam pattern, with 20-dB sidelobe suppression for weightings designed for such, this case is presented as a compelling validation of the basic technique.
The <i>Escherichia coli relBE</i> genes belong to a new toxin–antitoxin gene family (1998)

Toxin-antitoxin systems are defined as a group of plasmid- and chromosome-encoded loci that specify a cell toxin and a protein antitoxin. Plasmid-encoded toxin-antitoxin systems stabilize their replicons by killing plasmid-free cells. Here, we show that the relBE genes of Escherichia coli K-12 have all the basic features previously connected with toxin-antitoxin systems: (i) relE encodes a cytotoxin lethal or inhibitory to host cells; (ii) relB encodes an antitoxin that prevents the lethal action of the relE-encoded toxin; (iii) the relBE genes stabilize a mini-R1 test plasmid; and (iv) the RelB antitoxin autoregulates the relBEF operon at the level of transcription. Using database searching, we found relBE homologues on the chromosomes of E. coli K-12, Haemophilus influenzae and Vibrio cholerae. A fifth relBE homologue was identified on the enterotoxin encoding E. coli plasmid P307. Indirect evidence suggests that the toxicity of RelE may be related to the inhibition of protein synthesis. Based on these observations, we propose a model that explains the delayed relaxed phenotype associated with mutations in relB.
Compagnie Francaçise des Pétroles. P. F. Burollet, R. Byramjee, & C. Couppey 1969. Contribution à l'étude sédimentologique des terrains dévoniens du Nord-Est de l'Écosse. <i>Notes et Mémoires</i> No. 9, 84 p., 27 figs., 35 pls. Paris. No price. (1969)

Compagnie Francaçise des Pétroles. P. F. Burollet, R. Byramjee, & C. Couppey 1969. Contribution à l'étude sédimentologique des terrains dévoniens du Nord-Est de l'Écosse. Notes et Mémoires No. 9, 84 p., 27 figs., 35 pls. Paris. No price. - Volume 106 Issue 6
<title>Video browsing system for personal video recorders</title> (2002)

We present a novel low-complexity content-based browsing system for personal video recorders. It provides convenient access to any part of the content with an integrated browser-player that uses unique rapid summarization and indexing with compressed domain color and motion features, as well as audio features. Our summarization is similar in accuracy to other competing techniques and is computationally much simpler.
Scanned electrostatic force microscope for noninvasive high frequency potential measurement (1994)

This letter presents a technique for performing localized noncontact measurements of high frequency signals on integrated circuits using a scanned force microscope. The technique extracts the amplitude and phase of the signal voltage at a point on the circuit by nulling the electrostatic force interaction between a small driven probe and the test point. A heterodyne approach is used to enable the measurement of high frequency signals, including frequencies which are much greater than the mechanical resonance of the probe mechanism. Accurate measurements can be performed without complex calibration requirements and are not sensitive to dc offset effects.
SYSTEM IDENTIFICATION OF ACOUSTIC CHARACTERISTICS OF ENCLOSURES WITH RESONANT SECOND ORDER DYNAMICS (2006)

This research concerns offline identification of acoustic characteristics of enclosures with second-order resonant dynamics and their modeling as linear dynamic systems. The applied models can be described by basis function expansions. The practical problem of acoustic echo in enclosures is used as the target problem to be addressed. It has been found out that the classical filters are ineffective filter structures for approximating an echo generating system, due to their many required parameters. In order to reduce the number of estimated parameters, alternative methods for modeling the room impulse response need to be investigated. Out of various available techniques impulse response identification is utilized. With the help of given experimental data, the enclosures' impulse response is modeled using special orthonormal basis functions called Kautz functions. As another improved approximation, hybrid multistage system identifiers have been used in which the simplicity of classical filter structures and fast convergence of orthonormal structures is utilized as an advantage.
A Framework for Large-Scale Measurement of Broadband Performance (LMAP) (2015)

Measuring broadband service on a large scale requires a description of the logical architecture and standardisation of the key protocols that coordinate interactions between the components.This document presents an overall framework for large-scale measurements.It also defines terminology for LMAP (Large-Scale Measurement of Broadband Performance).
Autonomous Collision Avoidance (2013)

A steering controlled, autonomous collision avoidance system has been developed by California Polytechnic State University. This system represents a step in the direction of fully autonomous driving, while allowing the driver to maintain control of the vehicle during normal driving conditions. In the case of an imminent collision, the system removes control of the vehicle from the user and autonomously steers around the obstacles. The final system is able to avoid two static obstacles with a 95% pass rate and one moving obstacle with a 50% pass rate. With full scale, fleet wide, implementation of this system it is expected that each year up to 7,222 lives could be saved and over 60,000 injuries prevented. This decrease in the number of injuries and fatalities would produce a net yearly savings of up to $132 Billion per year.
Development of Long-Term Specific Cellular Immunity after Acute Blastomyces dermatitidis Infection: Assessments following a Large Point-Source Outbreak in Wisconsin (1990)

Ninety-five persons exposed to a point-source of Blastomyces dermatitidis in Wisconsin in 1984 were evaluated 3 months after exposure for the development of specific cellular immunity, and the 48 infected persons were again evaluated 7 and 21 months after exposure. The immune response was assessed by an assay of [3H]thymidine uptake by lymphocytes proliferating in response to stimulation with Blastomyces alkali- and water-soluble antigen (B-ASWS) or blastomycin and by skin testing with blastomycin. At 3 months, 36 (84%) of 43 patients demonstrated a proliferative response to B-ASWS (mean value of experimental [E]-control [C] counts, 16,852 +/- 2664, and of E/C, 42.2 +/- 5.3). None of the patients demonstrated a proliferative response to blastomycin, and only 19 (41%) of 45 patients tested had a positive blastomycin skin test. By 21 months, 47 (98%) of the 48 patients demonstrated a proliferative response to B-ASWS on at least one testing date. Of those initially positive, 82% had a persistently positive proliferative response at 21 months; mean E-C and E/C values were comparable to those seen at 3 months. None of the 47 uninfected persons demonstrated a proliferative response to B-ASWS: 7 with positive histoplasmin skin tests had a mean E-C value of 1094 +/- 432, and the 40 others, a mean value of 1139 +/- 212. A proliferative response to B-ASWS in exposed individuals is a reliable marker of specific cellular immunity in blastomycosis and the response persists in most patients for up to at least 2 years.
Order-Disorder Transformation of Fe&ndash;Co Alloys in Fine Particles (1967)

The specific heat and the lattice constant of Fe–Co alloys in the bcc range have been measured. The specimens are prepared by the reduction of solid solution Fe1−xCoxC2O4·2H2O in hydrogen at 800°C. It has been confirmed that the FeCo (CsCl type) superlattice exists over a wide range (30∼75 at% Co), and the so-called “550°C anomaly” of the Fe0.5Co0.5 superlattice has also been observed in the alloys containing 21∼60 at% Co. This anomaly appears at almost the same temperature in the composition range of 21∼50 at% Co (555°∼560°C), and its transition temperature falls abruptly when the cobalt content is greater than 50 atomic per cent. There is a broad peak at about 550°C in specific heat curves of 21, 23, 25, 27 and 27.5 at% Co alloys. These peaks have hitherto been considered due to the transition of the Fe3Co superlattice. Judging from the composition dependence of its transition temperature and the shape of the specific heat curves, however, it is reasonable to consider that these peaks do not correspond to the Fe3Co superlattice but to the extension of the 550°C anomaly.The effect of ordering on the lattice constant causes an increase in cell size in the 40∼60 at% Co alloys and a decrease in the 23∼40 at% Co alloys.The results of measurements by means of a neutron diffraction technique and the Mössbauer effect on a slow-cooled 25 at% Co alloy have shown no evidence for the existence of the Fe3Co superlattice.
Electrochemiluminescence of Organometallics and Other Transition Metal Complexes (1987)

A variety of transition metal complexes including organometallics was subjected to an ac electrolysis in a simple undivided electrochemical cell, containing only two current-carrying platinum electrodes. The compounds (A) are reduced and oxidized at the same electrode. If the excitation energy of these compounds is smaller than the potential difference of the reduced (A-) and oxidized (A+) forms, back electron transfer may regenerate the complexes in an electronically excited state (A+ + A- → A* + A). Under favorable conditions an electrochemiluminescence (ecl) is then observed (A* → A + hυ ). A weak ecl appeared upon electrolysis of the following complexes: Ir(III)-(2-phenylpyridine-C2,N1)3; [cu(I) (pyridine)I]4, Pt(II) (8-quinolinolate)2, Tb(III) (TTFA)3(o-phen) with TTFA = thenoyltrifluoroacetonate and o-phen = 1.10-phenanthroline, Tb(III) (TTFA)-, and Eu(III) (TFFA)3-(o-phen). An ecl of Re(o-phen)4(CO)3Cl occured during the electrolysis of tetralin hydroperoxide in the presence of the rhenium compound. The mechanism of these electrochemical reactions is discussed.
Role of Reactive Oxygen Species and Antioxidants in Atopic Dermatitis (2013)

Antioxidants may possibly be beneficial in the treatment of Atopic dermatitis, which must be substantiated by further studies.
Performance of Electro-Thermally Driven ${\rm VO}_{2}$-Based MEMS Actuators (2013)

The integration of VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> thin films in a MEMS actuator device is presented. The structural phase transition of VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> was induced electro-thermally by resistive heaters monolithically integrated in the MEMS actuator. The drastic mechanical displacements generated by the large stress induced during the VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> thin film phase transition have been characterized for static and time-dependent current pulses to the resistive heater, for air and vacuum environments. A comprehensive and simplified finite element model is developed and validated with experimental data. It was found that the cut-off frequency of the 300 μm-long VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> -based MEMS actuator operated in vacuum (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3dB</sub> =29 Hz) was mostly limited by conductive heat loss through the anchor, whereas convection losses were more dominant in air (f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3dB</sub> =541 Hz). The cut-off frequency is found to be strongly dependent on the dimensions of the cantilever when operated in air but far less dependent when operated in vacuum. Total deflections of 68.7 and 28.5 μm were observed for 300 and 200 μm-long MEMS cantilevers, respectively. Full actuation in air required ~ 16 times more power than in vacuum.
Gaucher disease: pathological mechanisms and modern management (2005)

Gaucher disease, the most common lysosomal storage disorder, is caused by the defective activity of the lysosomal enzyme, acid-beta-glucosidase (GlcCerase), leading to accumulation of glucosylceramide (GlcCer), particularly in cells of the macrophage lineage. Nearly 200 mutations in GlcCerase have been described, but for the most part, genotype-phenotype correlations are weak, and little is known about the down-stream biochemical changes that occur upon GlcCer accumulation that result in cell and tissue dysfunction. In contrast, the clinical course of Gaucher disease has been well described, and at least one treatment is available, namely enzyme replacement therapy. One other treatment, substrate reduction therapy, has recently been marketed, and others are in early stages of development. This review, after discussing pathological mechanisms, evaluates the advantages and disadvantages of existing therapies.
<b>The Reaction between Deuterium and 1-Butyne, 1,2-Butadiene, and 1,3-Butadiene on Palladium-on-Alumina Catalyst</b> (1963)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Reaction between Deuterium and 1-Butyne, 1,2-Butadiene, and 1,3-Butadiene on Palladium-on-Alumina CatalystEdwin F. Meyer and Robert L. BurwellCite this: J. Am. Chem. Soc. 1963, 85, 19, 2881–2887Publication Date (Print):October 1, 1963Publication History Published online1 May 2002Published inissue 1 October 1963https://doi.org/10.1021/ja00902a002RIGHTS & PERMISSIONSArticle Views283Altmetric-Citations42LEARN 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 InReddit PDF (820 KB) Get e-Alerts Get e-Alerts
<title>Noncritically phase-matched frequency conversion in Gd<formula><inf><roman>x</roman></inf></formula>Y<formula><inf><roman>1-x</roman></inf></formula>Ca<formula><inf><roman>4</roman></inf></formula>O(BO<formula><inf><roman>3</roman></inf></formula>)<formula><inf><roman>3</roman></inf></formula> crystal</title> (1998)

A nonlinear optical crystal YCa<SUB>4</SUB>O(BO<SUB>3</SUB>)<SUB>3</SUB> (YCOB) is phase-matchable for third harmonic generation (THG) of a Nd:YAG laser by type-I mixing between 1.064 and 0.532 micrometer. By partial substitution of Gd for Y in YCOB, a solid solution Gd<SUB>x</SUB>Y<SUB>1-x</SUB>Ca<SUB>4</SUB>O(BO<SUB>3</SUB>)<SUB>3</SUB> gradually changes the phase-matching angles of THG to ((theta) , (phi) ) equals (90 degrees, 90 degrees). In this paper, we present the properties of noncritically phase-matched THG in Gd<SUB>x</SUB>Y<SUB>1- x</SUB>Ca<SUB>4</SUB>O(BO<SUB>3</SUB>)<SUB>3</SUB> (x equals 0.24).
A digital transmission system using quaternary partial response CPM: principle structure and measurement results (2002)

The traditional drawbacks of continuous phase modulation (CPM) a high complexity decoder and difficult synchronization have been overcome by state reduction techniques and a suitable representation of the CPM signal by time-limited base functions. An implementation of quaternary partial response CPM schemes using this approach together with an extended synchronization strategy to combat frequency offsets is reported. Measurement results confirm simulation results, especially the predicted negligible loss due to application of reduced state sequence estimation algorithms. The proposed implementation leads to CPM schemes with complexity and efficiency comparable or even superior to trellis-coded PSK schemes.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>