gebhart/patrepeval huggingface dataset:
What is the actual capacity of single-mode fibers in amplified lightwave systems? (1993)

The combination of amplifier noise and optical nonlinearities limits the maximum capacity of single-mode fibers in amplified lightwave systems. Using fundamental considerations, it is shown that the capacity of single-mode fibers in transcontinental amplified lightwave systems is not terabits/second but less than 100 Gb/s with ideal amplifiers, and significantly less in realistic systems.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
LLNL's Precision Compton Scattering Light Source (2010)

Abstract not provided
A compact proton synchrotron with combined-function lattice dedicated for cancer therapy (2003)

A compact proton synchrotron with combined function lattice has been designed as a dedicated machine for cancer therapy because of its merits of easy operation and low construction cost. The lattice has a six-fold symmetry and its radius of curvature and circumference are 1.9 m and 23.9 m, respectively. For the purpose of establishing a good reference design, we have constructed a model magnet based on the three-dimensional magnetic field calculation. A magnetic field measurement has been performed with use of a three-dimensional Hall-probe. In the present paper, the results of these developments is presented together with the outline of the reference design.
Erratum: Application of a general self-consistency scheme in the linear combination of atomic orbitals formalism to the electronic and structural properties of Si and W (1986)

The paper contained the following misprints:(1) After Eq. ( 14), k2= -a2E is the correct definition of k2.(2) (a/2) should be replaced by (2a) in Eqs. ( 23) and ( 24).(3) (2a/k) should be replaced by (a/k) in the definition of a in the line following Eq. ( 16).All calculations reported in the original paper were performed with the correct equations and all numerical results and con- clusions remain unchanged.
The absence of pre-melting anomalies in tin (1965)

Measurements of the volume coefficient of thermal expansion and of the self-diffusion coefficient of 99.999% pure tin in the solid phase at temperatures up to 0.05 °C below the melting point, and of the expansion coefficient of liquid tin supercooled through the melting point, show no evidence of the pre- and post-melting anomalies predicted by the Frenkel-Bartenev theory of melting and invoked by Khomyakov et al. and Boyle et al. to explain their experimental data. It is shown theoretically that impurities which do not form a solid solution should produce pre-melting effects with the same temperature dependence as that predicted by the Frenkel-Bartenev theory.
Small-angle neutron scattering from amorphous polymers (1988)

The application of small-angle neutron scattering (SANS) to the study of polymers has revolutionized the approach to investigating polymer chain statistics, thermodynamics and dynamics. Some of the significant developments in this field during the past 15 years are described, including the demonstration of Gaussian coil behavior in polymer melts, derivation and application of the scattering theories for homogeneous polymer mixtures, and the recently discovered polymer isotope effect. Specific examples have been selected from a vast literature for the purpose of demonstrating the unique advantages and potential complications associated with the combined use of deuterium labeling and SANS.
Improved common-mode voltage elimination modulation with dead-time compensation for three-level neutral-point-clamped three-phase inverters (2013)

This paper presents a detailed analysis of the impact of “dead time” (DT) on the EMI performance of three-level neutral-point-clamped (3L-NPC) converters using common-mode voltage elimination (CME) modulation, proposing an improved CME modulation method to compensate for this. The implementation method of CME modulation is presented and the benefits and drawbacks are discussed, showing that the benefit of CME modulation is highly related to the DT added to the system, which makes it less practical. The effect of DT on CM voltage generation is then quantified by analyzing the switching states of one phase-leg. This knowledge is used to develop an improved CME modulation method, which has as main feature the proper selection of space vector sequences taking into consideration the current direction of the three phases. This analysis is verified using simulation results and validated using experimental tests conducted with a 2.5 kW 3L-NPC inverter prototype.
Isolation and Characterization of Major Urinary Oligosaccharides Excreted by a Patient with Type 3 GM1 Gangliosidosis (1991)

Two major oligosaccharides were isolated from the urine of a patient with type 3 GM1 gangliosidosis. From structural studies including compositional sugar analysis, fast-atom bombardment mass spectrometry, direct-inlet chemical ionization mass spectrometry, methylation analysis, chromium trioxide oxidation, and proton magnetic resonance spectroscopy, their structures were deduced to be as follows: [formula: see text] Both oligosaccharides have beta-linked galactose at the non-reducing ends. Oligosaccharide 1 is one of the most common urinary oligosaccharides found in type 1 and type 2 GM1 gangliosidosis. Oligosaccharide 2, lacto-N-difucohexaose II, has not been described in the urine of GM1 gangliosidosis patients. Excretion of oligosaccharide 1 in the type 3 patient was much less than that of a type 2 patient. Thin-layer chromatographic analysis revealed that the excretion of oligosaccharides with higher molecular weight than that of oligosaccharide 1 (octasaccharide) in the type 3 patient was much less than that of a type 2 patient, raising the possibility that the mutant beta-galactosidase of type 3 GM1 gangliosidosis can still act to some extent on higher molecular weight oligosaccharides containing beta-linked galactose at the non-reducing end.
Safety and Nonsafety Communications and Interactions in International Nuclear Power Plants (2007)

Current industry and NRC guidance documents such as IEEE 7-4.3.2, Reg. Guide 1.152, and IEEE 603 do not sufficiently define a level of detail for evaluating interdivisional communications independence. The NRC seeks to establish criteria for safety systems communications that can be uniformly applied in evaluation of a variety of safety system designs. This report focuses strictly on communication issues related to data sent between safety systems and between safety and nonsafety systems. Further, the report does not provide design guidance for communication systems nor present detailed failure modes and effects analysis (FMEA) results for existing designs. This letter report describes communications between safety and nonsafety systems in nuclear power plants outside the United States. A limited study of international nuclear power plants was conducted to ascertain important communication implementations that might have bearing on systems proposed for licensing in the United States. This report provides that following information: 1.communications types and structures used in a representative set of international nuclear power reactors, and 2.communications issues derived from standards and other source documents relevant to safety and nonsafety communications. Topics that are discussed include the following: communication among redundant safety divisions, communications between safety divisions and nonsafety systems, control of safety equipment from a nonsafety workstation, and connection of nonsafety programming, maintenance, and test equipment to redundant safety divisions during operation. Information for this report was obtained through publicly available sources such as published papers and presentations. No proprietary information is represented.
Psychiatric Disorders: Are They an Absolute Contraindication to Living Donation? (2009)

Little information has been published about the suitability of candidates for living organ donation who have a past or current psychiatric diagnosis. A retrospective review of 445 living donor kidney transplants performed at Barnes-Jewish Hospital's transplant center from 1995 to 2005 disclosed 42 donor candidates with such a history, prompting detailed psychological evaluation. Although 41 candidates (10% of the donor pool) met criteria for 1 or more psychiatric diagnoses, none were considered psychologically unfit for donation. Of these, 22 candidates underwent kidney donation without medical or surgical complications and without development of subsequent active psychological problems. Several donors maintained long-term contact up to 12 years to report good health and a high degree of satisfaction with the decision to donate. This experience suggests that for donor candidates with a psychiatric diagnosis, formal psychiatric evaluation to evaluate current mental health stability is warranted. Stable individuals, on or off therapy, can be considered fit to donate with expected short- and long-term outcome prognoses similar to those for the general population.
Two-Dimensional Gel Analysis of Histones in Acid Extracts of Nuclei, Cells, and Tissues (1980)

Two-dimensional gel analysis of histones from extracts of nuclei, cells, and tissues is described. A discontinuous buffer system concentrates the sample was used to increase resolution in both dimensions and also to allow the direct loading of HCl extracts of chromatin, nuclei, cells, and tissues. Stained one-dimensional gels are used as sample gels for the second dimension, cetylltrimethylammonium bromide being used to solubilize the proteins in the dye-protein complex. These methods enable one to purify proteins through acetic acid/urea/Triton, acetic acid/urea, and sodium dodecyl sulfate gels without eluting them from the gels. The method is also compatible with the use of protamine to displace histones from nuclei and nucleosomes separated in chromatin gels.
EXSSTRA: Integrated knowledge‐based system for stratigraphic interpretation (1990)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1990EXSSTRA: Integrated knowledge‐based system for stratigraphic interpretationAuthors: Pietro BettazzoliMaria Teresa GalliPatricia RochhiniPietro BettazzoliAGIP S.p.A., Italy, Maria Teresa GalliAGIP S.p.A., Italy, and Patricia RochhiniAGIP S.p.A., Italyhttps://doi.org/10.1190/1.1890187 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1890187FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1990ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1990 Pages: 1779 publication data© 1990 Copyright © 1990 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 10 Feb 2005 CITATION INFORMATION Pietro Bettazzoli, Maria Teresa Galli, and Patricia Rochhini, (1990), "EXSSTRA: Integrated knowledge‐based system for stratigraphic interpretation," SEG Technical Program Expanded Abstracts : 328-331. https://doi.org/10.1190/1.1890187 Plain-Language Summary PDF DownloadLoading ...
A granular‐fluid model for steady intense bed‐load transport (1985)

The mechanics of collisional grain flows are applied to the intense bed‐load transport of sediment. The velocity distribution and grain transport are determined analytically without any freely adjustable parameters. The flow is modeled as two fluid regions with continuous stress, velocity, and granular concentration overlying a stationary bed: a collision‐dominated granular‐fluid region and a wall‐bounded turbulent‐fluid shear region with saltating grains. A simple kinematic model for the saltation of grains is developed to predict the grain transport in the saltation zone and to provide the upper boundary conditions for the granular‐fluid region. The velocity in the granular‐fluid region is found to be approximately proportional to the applied shear stress raised to the 3/2 power under the assumption of a linearly varying volume concentration. The grain flux and energy dissipation are proportional to the applied shear stress raised to the 5/2 power. When compared with observations and previous models, the present formulation predicts significantly greater transport at extremely high stresses. Calculations of the energy dissipation are consistent with previous transport models that are based on energetics arguments.
Le suivi des patients après l’implantation d’une prothèse articulaire (2015)

Le suivi postopératoire des patients après l’implantation d’une prothèse articulaire constitue une mission multidisciplinaire de longue ­haleine. Il nécessite une bonne collaboration du médecin en charge du suivi avec un chirurgien orthopédiste et un infectiologue, afin qu’un patient avec suspicion d’infection périprothétique puisse être rapidement adressé au médecin compétent et traité, si l’infection est confirmée.
ChemInform Abstract: Organoboranes. Part 54. Exploration of the Reactions of (α‐ Haloallyl)lithium with Organoborane Derivatives. Simple and Convenient Procedure for the Synthesis of Three‐Carbon Homologated Boronate Esters and Terminal Alkenes. (1992)

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.
Cyclooctapyrrole mit 8er-Konformation: Enantiomerentrennung und Bestimmung der absoluten Konfiguration eines zweikernigen Metallkomplexes (1999)

Die prognostizierte Racematspaltung von Cyclooctapyrrolen mit chiraler 8er-Konformation – und von Metallkomplexen, die von diesen Liganden abgeleitet sind – ist realisierbar. Das Hexadecaethylderivat des Cyclooctapyrrols 1, das laut NMR-Analyse eingeschränkt beweglich ist, konnte ebenso wie dessen zweikernige Palladium- und Kupferkomplexe mittels präparativer Chromatographie an einer chiralen stationären Phase in stabile Enantiomere getrennt werden. Im Falle des Palladiumkomplexes und des freien Liganden war es zudem möglich, die absolute Konfiguration der Enantiomere zu ermitteln.
New addition compounds of dialkylboranes and aluminum methoxide. New practical synthesis of dialkylboranes and of mixed trialkylboranes containing functional groups (1971)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNew addition compounds of dialkylboranes and aluminum methoxide. New practical synthesis of dialkylboranes and of mixed trialkylboranes containing functional groupsHerbert Charles Brown and Shyam Kirti GuptaCite this: J. Am. Chem. Soc. 1971, 93, 7, 1818–1819Publication Date (Print):April 1, 1971Publication History Published online1 May 2002Published inissue 1 April 1971https://doi.org/10.1021/ja00736a062Request reuse permissionsArticle Views161Altmetric-Citations23LEARN 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 (268 KB) Get e-Alertsclose Get e-Alerts
Phase Separation in Bimodal Dispersions of Sterically Stabilized Silica Particles (1993)

Binary mixtures of suspended, nearly hard-sphere, sterically stabilized colloidal silica particles of diameter ratio 6 were observed to phase-separate at comparable volume fractions of the two particle species. The occurrence of phase separation as a function of the particle concentrations was studied visually and by small-angle light scattering. The results support recent predictions by Biben and Hansen.
A corrosion and erosion protection coating for complex microchannel coolers used in high power laser diodes (2014)

With efficiencies in the range of 50-75%, significant amount of waste heat is generated during the operation of high power laser diodes. In order to maintain consistent optical performance, the temperature of the laser diode needs to be managed effectively. Single phase copper microchannel coolers (MCC) with high purity and low electrical conductivity de-ionized water (DIW) at high velocities are used to dissipate the heat. Though thermally beneficial, the high velocity, high purity DIW coolant exposes the copper MCC to erosion and corrosion damage [1]. This substantially decreases the thermal performance of MCC and requires costly replacement within a short duration. This paper presents the experimental validation of a new vapor deposition coating, developed by Advanced Cooling Technologies, Inc., (ACT) for enhanced protection of MCCs in high power laser diode systems. MCC samples with coating were exposed to accelerated erosion and corrosion testing in high velocity, high purity water that simulates laser diode operating conditions. Evaluation of thermal resistance, pressure drop, and optical properties of MCC stacks demonstrated significant improvements in erosion/corrosion protection provided by the coating without impeding the cooling performance of the MCCs. Hence, the coating will increase the lifetime of MCCs and reduce costly maintenance intervals.
Seismic Retrofit of Flexural Bridge Spandrel Columns Using Fiber Reinforced Polymer Composite Jackets (1999)

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Heinz Body Anemia and Methemoglobinemia in Ponies Given Red Maple (<i>Acer rubrum L.</i>) Leaves (1982)

Ponies given dried red maple (Acer rubrum L.) leaves at a dose of 3.0 gm/kg body weight became ill and died one to five days after administration of the leaves. Two clinical patterns of disease were seen. Ponies given dried leaves collected after September 15 died by 18 hours, while ponies given dried leaves collected before September 15 became ill with a hemolytic syndrome and died by three to five days. Freshly harvested leaves administered immediately after collection did not produce disease in ponies, but when dried, they became toxic and remained so for at least 30 days. Overnight freezing did not alter the toxicity of the leaves. Leaves were toxic when administered at doses of 1.5 gm/kg of body weight. The clinical signs of ponies with the hemolytic syndrome included polypnea, tachycardia, icterus, cyanosis, scleral petechiation, and brownish discoloration of the urine and blood. Blood changes of ponies with the hemolytic syndrome included anemia, hemoglobinemia, Heinz bodies, depletion of erythrocyte reduced glutathione, increased erythrocyte fragility, and increased serum levels of aspartate amino transferase, sorbitol dehydrogenase, plasma protein, and bilirubin. Lesions of ponies that died from the hemolytic syndrome included icterus, centrilobular hepatic degeneration, hemoglobinemic nephrosis, and erythrophagocytosis by splenic, adrenal, and hepatic phagocytes. Only brownish discoloration of the blood and mild centrilobular hepatic degeneration were observed in the four ponies that died peracutely.
Brain mapping of attention and neglect after stroke (2010)

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Measurement of gated field emitter failures (1993)

The emerging field of vacuum microelectronics has many promising applications including flat-panel displays, microwave devices, and ionization sources. The technology is based on arrays of microfabricated micrometer-scaled gated field emitters. Applications are currently limited by unacceptable reliability due primarily to failures of individual field emitters. The failure of an individual emitter produces a characteristic electrical pulse. A circuit is used to monitor and count these pulses. The technique provides a powerful tool for exploration of stable operating regimes for vacuum microelectronic devices and may be useful in other areas in which vacuum discharges must be monitored.
Holistic Day-Ahead Scheduling Approach for inhomogeneous Pools considering common German Compensation and Cost Structures (2018)

In this paper a mixed-integer linear programming optimization approach is introduced, which allows a detailed modelling of various Virtual Power Plants (VPP) consisting of different generation, storage and demand assets with specific operating costs, incentive tariffs, sales channels and usual operation restrictions such as minimum and maximum demand and generation power, load gradients, etc. The assets can thereby be considered as independent units with an own grid access, but can also be assigned to complex grid connection points (GCP) where the units are then utilized to meet local heat and electricity demand, maximize profit and comply to local restrictions. In addition to that it is possible to define soft and hard feed-in and acquisition constraints for the overall VPP energy schedule. To enable the VPP optimization and take into account these three different optimization levels, an accounting method which considers all internal and external usages of energy for each asset is introduced. The simulation results show that the optimization model can effectively find the economically best schedule by varying trading volumes, energy self-sufficiency of single users or exchange of energy within the VPP.
Optical determination of the Al<sub>x</sub>Ga<sub>1-x</sub>As energy gap variation versus the Al concentration in MBE-grown samples (1987)

The authors have determined the variation of the AlGaAs energy gap (Eg) versus the aluminium concentration x. The x-values are determined by precise X-ray measurements and the values of Eg are deduced from photoluminescence experiments. They find the law, Eg(x)=Eg(O)+1.34x eV, for x<0.45 at T=2 K.
Advances in Macular Dystrophies (1995)

International Ophthalmology Clinics is a valuable resource for any medical professional seeking to stay informed and up-to-date regarding developments in this dynamic specialty. Each issue of this quarterly publication presents a comprehensive review of a single topic in a new or changing area of ophthalmology. The timely, tightly focused review articles found in this publication give ophthalmologists the opportunity to benefit from the knowledge of leading experts in this rapidly changing field.
ChemInform Abstract: Scope and Stereochemistry of the Tandem Intramolecular Cyclopropanation/Cope Rearrangement Sequence. (1989)

Abstract The 2,4‐pentadienyl diazobutenoates (V), prepared as shown in the reaction scheme, are subjected to Rh(II)‐catalyzed denitrogenation and subsequent carbene cyclization, forming the cycloheptafuranones (VI).