gebhart/patrepeval huggingface dataset:
Effects of added metal ions on the interaction between polyvinylpyrrolidone and azo dyes carrying hydroxyl groups (1987)

Abstract The extent of binding of chrome violet, which is a monoazo dye and involves two hydroxyl groups in o and o ′ positions to azo group, by polyvinylpyrrolidone is markedly enhanced in the presence of Co 2+ ion. The amount of binding in the presence of 1 × 10 −4 mol/L of Co 2+ ion increases by a factor of about 10 compared to that in the absence of the metal ion. Ni 2+ and Zn 2+ ions do not perceptively influence the binding affinity of the dye. Cu 2+ ion, in contrast, suppresses the binding. To investigate further the action of added metal ions, a cobalt–complex dye was prepared and its binding property for the polymer was compared to that of chrome violet in the presence of metal ions. Some possible mechanisms for the enhancement of chrome violet binding by the addition of Co 2+ ion are described.
Structural approach to geophysical data access (1996)

PreviousNext No AccessSEG Technical Program Expanded Abstracts 1996Structural approach to geophysical data accessAuthors: Naum DerzhiEugene LichmanEric LanningNaum DerzhiThe Discovery Bay Co., Eugene LichmanThe Discovery Bay Co., and Eric LanningThe Discovery Bay Co.https://doi.org/10.1190/1.1826255 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Permalink: https://doi.org/10.1190/1.1826255FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 1996ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 1996 Pages: 2106 publication data© 1996 Copyright © 1996 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 10 Feb 2005 CITATION INFORMATION Naum Derzhi, Eugene Lichman, and Eric Lanning, (1996), "Structural approach to geophysical data access," SEG Technical Program Expanded Abstracts : 1017-1020. https://doi.org/10.1190/1.1826255 Plain-Language Summary PDF DownloadLoading ...
Influence of polyamines on membrane functions (1989)

Research Article| May 15 1989 Influence of polyamines on membrane functions F Schuber F Schuber 1Laboratoire de Chimie Enzymatique (CNRS UA 1182), Université Louis Pasteur, Institut de Botanique, 28 rue Goethe, 67000 Strasbourg, France. Search for other works by this author on: This Site PubMed Google Scholar Biochem J (1989) 260 (1): 1–10. https://doi.org/10.1042/bj2600001 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter LinkedIn Cite Icon Cite Get Permissions Citation F Schuber; Influence of polyamines on membrane functions. Biochem J 15 May 1989; 260 (1): 1–10. doi: https://doi.org/10.1042/bj2600001 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentAll JournalsBiochemical Journal Search Advanced Search This content is only available as a PDF. © 1989 London: The Biochemical Society1989 Article PDF first page preview Close Modal You do not currently have access to this content.
A new power system restoration framework by means of multi-agent approach (2003)

This paper proposes a multi-agent approach to power system restoration. The proposed system consists of a number of bus agents (BAGS). BAG is developed to decide a sub-optimal target network configuration after a fault occurrence by interacting with other BAGS based on only locally available information. The interaction of several simple agents leads to a dynamic system, allowing efficient approximation of a solution. Simulation results have demonstrated that this method is able to reach sub-optimal target network configurations.
High Power Density Design of 6-Slot–8-Pole Hybrid Excitation Flux Switching Machine for Hybrid Electric Vehicles (2011)

Over the last decade, many automotive companies have been commercializing hybrid electric vehicles (HEVs) as one of candidates for sustainable human life. Some of the recent HEVs employ electric propulsion systems using a combination of reduction gear and interior permanent magnet synchronous motors (IPMSM) operated by relatively high-speed more than 12 000 r/min, resulting in achieving high torque and power densities simultaneously. In the combination, since all rare-earth permanent magnets are embedded in its rotor core, a machine design of high-speed IPMSM tends to be difficult. This is due to a design confliction between keeping enough mechanical strength of the rotor core and bringing out better electromagnetic performances. To cope with this problem, this paper deals with a 6-slot-8-pole hybrid excitation flux switching machine, in which both permanent magnets and wound field excitation are employed as magnetomotive force sources. This machine has all active parts on the stator body and a rugged rotor structure similar to that of switched reluctance motor suitable for high-speed operation. Some design parameter refinements are conducted to the machine in order to elevate maximum torque capability and maximum power density as much as possible under given design requirements and constraints. As a result, it is demonstrated that the machine designed becomes a good candidate for the target HEV drive application.
Focused ultrasound in ophthalmology (2016)

The use of focused ultrasound to obtain diagnostically significant information about the eye goes back to the 1950s. This review describes the historical and technological development of ophthalmic ultrasound and its clinical application and impact. Ultrasound, like light, can be focused, which is crucial for formation of high-resolution, diagnostically useful images. Focused, single-element, mechanically scanned transducers are most common in ophthalmology. Specially designed transducers have been used to generate focused, high-intensity ultrasound that through thermal effects has been used to treat glaucoma (via ciliodestruction), tumors, and other pathologies. Linear and annular transducer arrays offer synthetic focusing in which precise timing of the excitation of independently addressable array elements allows formation of a converging wavefront to create a focus at one or more programmable depths. Most recently, linear array-based plane-wave ultrasound, in which the array emits an unfocused wavefront and focusing is performed solely on received data, has been demonstrated for imaging ocular anatomy and blood flow. While the history of ophthalmic ultrasound extends back over half-a-century, new and powerful technologic advances continue to be made, offering the prospect of novel diagnostic capabilities.
Electromagnetic penetration through apertures in conducting surfaces (1978)

In designing hardened systems, one must be able to characterize as well as quantitatively determine the penetration of EMP signals through apertures of general shapes in structures of varying configurations. In this paper a tutorial review of a number of methods for analyzing such aperture problems is presented with an emphasis on techniques. The discussion presented herein is reasonably self-contained and is supplemented by references to classical as well as current approaches to the aperture problem. An extensive set of representative numerical results is included.
Incorporation of chlorine during chlorine reactive ion beam etching of aluminum–copper alloys (1986)

Reactive ion etching of aluminum–copper thin films, used for interconnects on semiconductor devices, is complicated by implantation of reactive gases in the film during etching. Incorporation of chlorine in aluminum–copper thin films during reactive ion beam etching with chlorine ions was studied. Unannealed thin films of aluminum-4% copper alloys were etched with 500 and 1000 eV chlorine ions at current densities that ranged from 0.01 to 0.5 mA/cm2. Copper, oxygen, and chlorine concentrations as a function of position were determined using Auger sputter depth profiling, scanning electron microscopy with x-ray fluorescence spectroscopy and Rutherford backscattering spectroscopy. The amount of chlorine incorporated in the film was measured as a function of ion energy, current density, and angle of incidence. If chlorine was not removed from the near surface layer before exposure to air, numerous mounds formed on about 30% of the surface; these were composed primarily of aluminum, oxygen, and chlorine. The chlorine was observed to be completely confined to these mounds and the oxide layer that forms on the surface of the film after etching and upon contact to air. Implications for developing reactive ion etching techniques in which no chlorine remains in the near surface layer will be discussed.
Pseudo single crystal, direct-band-gap Ge0.89Sn0.11 on amorphous dielectric layers towards monolithic 3D photonic integration (2014)

We demonstrate pseudo single crystal, direct-band-gap Ge0.89Sn0.11 crystallized on amorphous layers at &lt;450 °C towards 3D Si photonic integration. We developed two approaches to seed the lateral single crystal growth: (1) utilize the Gibbs-Thomson eutectic temperature depression at the tip of an amorphous GeSn nanotaper for selective nucleation; (2) laser-induced nucleation at one end of a GeSn strip. Either way, the crystallized Ge0.89Sn0.11 is dominated by a single grain &gt;18 μm long that forms optoelectronically benign twin boundaries with others grains. These pseudo single crystal, direct-band-gap Ge0.89Sn0.11 patterns are suitable for monolithic 3D integration of active photonic devices on Si.
A quasi-optical amplifier (1993)

A quasi-optical amplifier suitable for Gaussian-beam applications is presented. The amplifier is based on the integrated horn antenna and uses polarization duplexing to isolate the output beam from the input beam. A prototype hybrid amplifier is reported with a measured gain of 10.5 dB at 5.92 GHz. The amplifier design is uniplanar, is compact, and is compatible with the fabrication process of high-electron-mobility transistors (HEMTs) at millimeter-wave frequencies.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
High-strain shape memory polymer networks crosslinked by SiO2 (2011)

We addressed a novel high-strain shape memory polymer network constructed from SiO2 microspheres core functionalized with polycaprolactone arms. Using abundant surface hydroxyl of silica, epsilon-caprolactone was initiated and uniform SiO2@PCL macroparticles were formed; after cross-linking of SiO2@PCL by MDI, a high-strain shape memory polymer network of SiO2–SMP was obtained. Compared to traditional SMP having similar composition, the SiO2–SMP exhibits excellent mechanical strength and good shape memory properties due to the introduction of SiO2 as a cross-linking point. The elastic moduli (E) and tensile strength (σm) of the SiO2–SMP were improved to 500 MPa and 90 MPa, respectively, at room temperature. It could be attributed to the enhancement of the combining force among polymer chains caused by the crosslinking networks, and the rigidity of the polymer owing to the addition of SiO2 as filler. High shape fixing ratios (∼100%) and recovery ratios (more than 95%) were also exhibited for SiO2–SMP from the second circle. The comparatively low recovery ratios were exhibited in the first circle; the obvious evidence of the existence of the irreversible bond breakage is attributed to it. Furthermore, the mechanical and shape memory properties could be adjusted by changing the size of silica microspheres and the molecular weight of the PCL.
Synthesis and Reactivity of the Imido Analogues of the Uranyl Ion (2006)

Addition of 1.5 equiv of I2 to a THF solution of UI3(THF)4, containing either 6 equiv of tBuNH2 or 2 equiv of RNH2 (R = Ph, 3,5-(CF3)2C6H3, 2,6-(iPr)2C6H3) and 4 equiv of NEt3, generates orange solutions containing U(NtBu)2I2(THF)2 (1) or U(NAr)2I2(THF)3 (Ar = Ph, 2; 3,5-(CF3)2C6H3, 3; 2,6-(iPr)2C6H3, 4), respectively, all of which can be isolated in good yields. Alternatively, 1 can be prepared by reaction of uranium metal with 3 equiv of I2 and 6 equiv of tBuNH2, also in good yield. Complexes 1-4 have been characterized by X-ray crystallography, and each of these complexes exhibits linear N-U-N linkages and short U-N bonds. Using density functional theory simulations of complexes 1 and 2, two triple bonds between the metal center and the nitrogen ligands were identified. Complexes 1 and 2 readily react with neutral Lewis bases such as pyridine or Ph3PO to form U(NR)2I2(L)2 (R = tBu, L = py, 5; Ph3PO, 7; R = Ph, L = py, 6; Ph3PO, 8), and with PMe3 to form U(NR)2I2(THF)(PMe3)2 (R = tBu, 9; Ph, 10). The solid-state molecular structures of 5, 7, and 9 have been determined by X-ray crystallography, and these complexes, like their parent compounds, exhibit linear N-U-N angles and short U-N bonds. Complexes 1 and 2 also react with AgOTf in CH2Cl2, forming U(NR)2(OTf)2(THF)3 (R = tBu, 11; Ph, 12) after recrystallization from THF. Crystals of 12 grown from CH2Cl2 were found to contain a dimer, [U(NPh)2(OTf)2(THF)2]2, a complex possessing bridging triflate groups.
A Lithic Industry at Ain Wif, Tripolitania (1979)

Ain Wif is well known to students of Roman Tripolitania as the settlement and military road-station of Thenadassa , studied and published by Goodchild and Ward-Perkins. The site lies on the summit of the eastern bank of the Wadi Wif prior to its confluence with the larger Wadi Hammam, and is some fifteen kilometres west of Sidi as Sid (Tazzoli) village. The ain (spring) is marked by a small oasis of palms and, as Goodchild and Ward-Perkins pointed out, the assured water-supply was presumably the determining factor in the establishment of the Roman settlement, sometime in the first century A.D. During a visit to the site in December 1978, as Research Assistant to Olwen Brogan for the Society of Libyan Studies, I discovered a dense concentration of struck flints immediately to the north-east of the oasis. (Plate ?. Map ref. UR 463 686 on sheet 1989. II, Qarat al Bayda, series P761 of the U.S. Army Map Service). With the help of Miss Tina Watson, 124 struck flints, mostly waste flakes, and a number of fire-crazed flints were picked up from the surface within the space of half an hour. The main concentration lies within an area of about five metres square on sand and gravel and, no doubt, represents a prehistoric knapping-floor. It is doubtful whether much, if any, stratigraphy will be found on the site.
Al<sup>3+</sup> intercalation/de-intercalation-enabled dual-band electrochromic smart windows with a high optical modulation, quick response and long cycle life (2018)

An Al<sup>3+</sup> intercalation/de-intercalation-enabled dual-band electrochromic smart window featuring simultaneously a high optical modulation, fast response and long cycle life.
A decision-theoretic approach to task assistance for persons with dementia (2005)

Heart failure (HF) is a common disease that causes significant limitations on the organism's capacity and, in extreme cases, leads to death. Clinically, iron deficiency (ID) plays an essential role in heart failure by deteriorating the patient's condition and is a prognostic marker indicating poor clinical outcomes. Therefore, in HF patients, supplementation of iron is recommended. However, iron treatment may cause adverse effects by increasing iron-related apoptosis and the production of oxygen radicals, which may cause additional heart damage. Furthermore, many knowledge gaps exist regarding the complex interplay between iron deficiency and heart failure. Here, we describe the current, comprehensive knowledge about the role of the proteins involved in iron metabolism. We will focus on the molecular and clinical aspects of iron deficiency in HF. We believe that summarizing the new advances in the translational and clinical research regarding iron deficiency in heart failure should broaden clinicians' awareness of this comorbidity.
The Good (1993)

Forster's ideas, examined here and in the next section, are sometimes personal and original, sometimes familiar, sometimes apparently banal but given a new spin. Other ideas are revealing of the time and place, Edwardian England. The fictional form combines, juxtaposes and diffuses these ideas.
Growth/Differentiation Factor-15/Macrophage Inhibitory Cytokine-1 Is a Novel Trophic Factor for Midbrain Dopaminergic Neurons<i>In Vivo</i> (2000)

Transforming growth factor-βs (TGF-βs) constitute an expanding family of multifunctional cytokines with prominent roles in development, cell proliferation, differentiation, and repair. We have cloned, expressed, and raised antibodies against a distant member of the TGF-βs, growth/differentiation factor-15 (GDF-15). GDF-15 is identical to macrophage inhibitory cytokine-1 (MIC-1). GDF-15/MIC-1 mRNA and protein are widely distributed in the developing and adult CNS and peripheral nervous systems, including choroid plexus and CSF. GDF-15/MIC-1 is a potent survival promoting and protective factor for cultured and iron-intoxicated dopaminergic (DAergic) neurons cultured from the embryonic rat midbrain floor. The trophic effect of GDF-15/MIC-1 was not accompanied by an increase in cell proliferation and astroglial maturation, suggesting that GDF-15/MIC-1 probably acts directly on neurons. GDF-15/MIC-1 also protects 6-hydroxydopamine (6-OHDA)-lesioned nigrostriatal DAergic neurons in vivo . Unilateral injections of GDF-15/MIC-1 into the medial forebrain bundle just above the substantia nigra (SN) and into the left ventricle (20 μg each) immediately before a 6-OHDA injection (8 μg) prevented 6-OHDA-induced rotational behavior and significantly reduced losses of DAergic neurons in the SN. This protection was evident for at least 1 month. Administration of 5 μg of GDF-15/MIC-1 in the same paradigm also provided significant neuroprotection. GDF-15/MIC-1 also promoted the serotonergic phenotype of cultured raphe neurons but did not support survival of rat motoneurons. Thus, GDF-15/MIC-1 is a novel neurotrophic factor with prominent effects on DAergic and serotonergic neurons. GDF-15/MIC-1 may therefore have a potential for the treatment of Parkinson's disease and disorders of the serotonergic system.
Lenograstim for the treatment of neutropenia in patients receiving ganciclovir for cytomegalovirus infection: a randomised, placebo‐controlled trial in AIDS patients (2000)

This phase IIa, randomised, single-blind, placebo-controlled study was conducted to determine the dose of recombinant human granulocyte colony-stimulating factor (lenograstim) suitable for use in AIDS patients. The study was conducted at 27 European AIDS/HIV centres, and recruited 69 AIDS patients with an initial episode or relapse of cytomegalovirus infection (neurological site excluded) and an absolute neutrophil count (ANC) < or = 1.0 x 10(9)/L upon diagnosis or between days 1 and 12 of ganciclovir (GCV) treatment. The patients were randomised to placebo (n = 14) or one of four lenograstim arms: 150 microg/m2/d (the standard onco-haematology dose, n = 13) or 100 (n = 13), 50 (n = 15), or 25 microg/m2/d (n = 14). In all groups, the planned dose of GCV was 10 mg/kg/d for 21 d. Median ANC at weeks 2 and 3 was significantly higher in each lenograstim group than in the placebo group (p = 0.05). At week 3, median ANC (x 10(9)/L) was 0.7 in the placebo group, compared with 6.0, 7.4, 4.5, and 2.0 in the 150, 100, 50, and 25 microg2/d lenograstim groups, respectively. Median ANC was not significantly different between the 150, 100, and 50 microg/m2/d lenograstim groups at any time point, but significantly higher in the 50 than in the 25 microg/m2/d group at weeks 2 (p = 0.05) and 3 (p = 0.02). Lenograstim was generally well tolerated, leading to no severe adverse events. In conclusion, lenograstim 50 microg/m2/d is suitable for the treatment of ganciclovir-induced neutropenia and is safe. These results should help the physician choose an optimal and cost-efficient regimen for patients with AIDS-related neutropenia when rHuG-CSF support is indicated.
Rotating-Mirror Streak and Framing Cameras (1997)

A large number of rotating mirror cameras have been manufactured in the last several decades to cover a range of recording demands often near the limits of the rotating mirror's burst speed. The demand for high recording rates often has been met by optoelectric devices. This monograph is intended for readers who are familiar with high-speed recording devices
Improved Miniature Penetrometer Cones for Determination of Lubricating Grease Consistency (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTImproved Miniature Penetrometer Cones for Determination of Lubricating Grease ConsistencyB. W. Hotten and G. M. KiblerCite this: Anal. Chem. 1950, 22, 12, 1574–1575Publication Date (Print):December 16, 1950Publication History Published online1 May 2002Published inissue 16 December 1950https://pubs.acs.org/doi/10.1021/ac60048a035https://doi.org/10.1021/ac60048a035research-articleACS PublicationsRequest reuse permissionsArticle Views35Altmetric-Citations1LEARN 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
Kinetics of Chronic Oxidation of NBG-17 Nuclear Graphite by Water Vapor (2015)

This report presents the results of kinetic measurements during accelerated oxidation tests of NBG-17 nuclear graphite by low concentration of water vapor and hydrogen in ultra-high purity helium. The objective is to determine the parameters in the Langmuir-Hinshelwood (L-H) equation describing the oxidation kinetics of nuclear graphite in the helium coolant of high temperature gas-cooled reactors (HTGR). Although the helium coolant chemistry is strictly controlled during normal operating conditions, trace amounts of moisture (predictably < 0.2 ppm) cannot be avoided. Prolonged exposure of graphite components to water vapor at high temperature will cause very slow (chronic) oxidation over the lifetime of graphite components. This behavior must be understood and predicted for the design and safe operation of gas-cooled nuclear reactors. The results reported here show that, in general, oxidation by water of graphite NBG-17 obeys the L-H mechanism, previously documented for other graphite grades. However, the characteristic kinetic parameters that best describe oxidation rates measured for graphite NBG-17 are different than those reported previously for grades H-451 (General Atomics, 1978) and PCEA (ORNL, 2013). In some specific conditions, certain deviations from the generally accepted L-H model were observed for graphite NBG-17. This graphite is manufactured in Germany by SGL Carbon Group and is a possible candidate for the fuel elements and reflector blocks of HTGR.
CAPTCHA smuggling (2010)

CAPTCHAs protect online resources and services from automated access. From an attacker's point of view, they are typically perceived as an annoyance that prevents the mass creation of accounts or the automated posting of messages. Hence, miscreants strive to effectively bypass these protection mechanisms, using techniques such as optical character recognition or machine learning. However, as CAPTCHA systems evolve, they become more resilient against automated analysis approaches.