gebhart/patrepeval huggingface dataset:
Algebraic decoding using special divisors (1993)

The basic algorithm for decoding of algebraic-geometric codes corrects up to (d/sub c/-1)2-g/2 errors, where d/sub c/ denotes the designed minimum distance of a code and g denotes the genus of a curve. The modified algorithm improves on this, but applies to a restricted class of codes. An extended modified algorithm that applies to all codes is formulated. It will correct up to (d/sub c/-1)/2-s errors, s is called the Clifford defect of a curve. For curves with g>or=1, this defect satisfies 0<or=s<or=(g-1)/2. The success of the algorithm depends highly on the curve that is used and the result is in the first place a theoretical result. To support the practical importance, two special cases are considered. All codes from hyperelliptic curves can be decoded up to the designed minimum distance. For plane curves that contain at least one rational point, it is shown that s<or=(g+1)/4.<<ETX>>
<i>In</i> <i>situ</i> deposition of superconducting YBa2Cu3O7−<i>x</i> and DyBa2Cu3O7−<i>x</i> thin films by organometallic molecular-beam epitaxy (1991)

Smooth, c-axis oriented, superconducting thin films of YBa2Cu3O7−x and DyBa2Cu3O7−x have been grown on (100) MgO by organometallic molecular-beam epitaxy. To our knowledge this is the first report of this technique for the fabrication of this class of high Tc superconductors. Y (or Dy) β-diketonate organometallic sources are utilized with Ba and Cu metallic sources. Films are grown in situ by codepositing from these sources in an ozone ambient with a substrate temperature of 700 °C. The use of an active oxygen source (ozone) is required for decomposition of the organometallic sources as well as for the attainment of superconducting films in situ. The films are characterized by Tc’s as high as 85 K and Jc’s of 1.2×106 A/cm2 at 12 K and 2.4×103 A/cm2 at 77 K. In addition to the four point Tc and Jc results, alternating-current susceptibility measurements are also reported. The composition of the films has been determined by Rutherford backscattering spectroscopy, Auger and secondary ion mass spectroscopy analysis, with the smoothness of the films characterized by scanning tunneling microscopy.
Theoretical investigation of a circular patch antenna in the presence of a left-handed medium (2005)

The influence of a left-handed medium (LHM) on the performances of a circular patch antenna is quantified numerically. For this, a homogenization procedure of the LHM is carried out in order to design the patch antenna at a suitable frequency where the losses of the LHM are low. From the first results obtained, it is noted that in the presence of the LHM, the antenna is more directive and has a higher gain.
Complexes of Nickel with N,N,N',N'-Tetrakis-(2-hydroxyethyl)-ethylenediamine and Sodium Hydroxide (1964)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComplexes of Nickel with N,N,N',N'-Tetrakis-(2-hydroxyethyl)-ethylenediamine and Sodium HydroxideKarl H. Pearson and Karl H. GayerCite this: Inorg. Chem. 1964, 3, 4, 476–479Publication Date (Print):April 1, 1964Publication History Published online1 May 2002Published inissue 1 April 1964https://pubs.acs.org/doi/10.1021/ic50014a003https://doi.org/10.1021/ic50014a003research-articleACS PublicationsRequest reuse permissionsArticle Views74Altmetric-Citations4LEARN 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
Silver-Catalyzed Carbon Dioxide Incorporation and Rearrangement on Propargylic Derivatives (2011)

Abstract A silver/DBU catalyst system was developed for the effective synthesis of cyclic carbonate and oxazolidinone from the reaction of CO2 with propargylic alcohols and propargylic amines, respectively, in high yields under mild conditions. It was found that the [3,3]-sigmatropic Meyer–Schuster-type rearrangement of the propargylic alcohol was mediated by CO2 in DMF to afford the corresponding α,β-unsaturated carbonyl compounds in high yields. The silver salt combined with the chiral Schiff base ligand could be applied to enantioselective chemical CO2 incorporation into various bispropargylic alcohols to produce the corresponding cyclic carbonate in high yields with high enantioselectivity. The absolute configuration was determined by VCD spectroscopy as well as by X-ray analysis. These products were found to be active for the aminolysis reaction to afford the corresponding carbamate derivatives in high yields without any loss of optical purity.
Nonstoichiometric fluorides—Solid electrolytes for electrochemical devices: A review (2007)

The solid electrolytes with fluorine-ion conductivity that were revealed during the analysis of the phase diagrams of the MF m -RF n systems within the program of search for new multicomponent fluoride crystalline materials carried out at the Shubnikov Institute of Crystallography, Russian Academy of Sciences, are described. The most widespread and promising materials are the nonstoichiometric phases with fluorite (CaF2) and tysonite (LaF3) structures, which are formed in the MF2-RF3 systems (M = Ca, Sr, Ba, Cd, or Pb; R = Sc, Y, or La-Lu). These phases have superionic fluorine conductivity due to the anion sublattice disorder. The ionic conductivity of crystals of both structure types has been studied and the limits of its change with composition and temperature are determined. Nonstoichiometric fluorides are used as solid electrolytes in chemical sensors, fluorine sources, and batteries. The prospects of the use of fluorine-ion conductors in solid-state electrochemical devices, principles of their operation, and the problems of optimization of their composition are discussed.
Searching with context (2006)

Contextual search refers to proactively capturing the information need of a user by automatically augmenting the user query with information extracted from the search context; for example, by using terms from the web page the user is currently browsing or a file the user is currently editing.We present three different algorithms to implement contextual search for the Web. The first, it query rewriting (QR), augments each query with appropriate terms from the search context and uses an off-the-shelf web search engine to answer this augmented query. The second, rank-biasing (RB), generates a representation of the context and answers queries using a custom-built search engine that exploits this representation. The third, iterative filtering meta-search (IFM), generates multiple subqueries based on the user query and appropriate terms from the search context, uses an off-the-shelf search engine to answer these subqueries, and re-ranks the results of the subqueries using rank aggregation methods.We extensively evaluate the three methods using 200 contexts and over 24,000 human relevance judgments of search results. We show that while QR works surprisingly well, the relevance and recall can be improved using RB and substantially more using IFM. Thus, QR, RB, and IFM represent a cost-effective design spectrum for contextual search.
Optimal material discrimination using spectral x-ray imaging (2011)

Spectral x-ray imaging using novel photon counting x-ray detectors (PCDs) with energy resolving abilities is capable of providing energy-selective images. PCDs have energy thresholds, enabling the classification of photons into multiple energy bins. The extra energy information provided may allow materials such as iodine and calcium, or water and fat to be distinguishable. The information content of spectral x-ray images, however, depends on how the photons are grouped together. In this work, we present a model to optimize energy windows for maximum material discrimination. Multivariate statistics allows the confidence region of the correlated uncertainties to be mapped in the thickness space. Minimization of the uncertainties enables optimization of energy windows. Applications related to small animal imaging and breast imaging are considered.
Impaired plasticity of macrophages in X-linked adrenoleukodystrophy (2018)

X-linked adrenoleukodystrophy is caused by ATP-binding cassette transporter D1 (ABCD1) mutations and manifests by default as slowly progressive spinal cord axonopathy with associated demyelination (adrenomyloneuropathy). In 60% of male cases, however, X-linked adrenoleukodystrophy converts to devastating cerebral inflammation and demyelination (cerebral adrenoleukodystrophy) with infiltrating blood-derived monocytes and macrophages and cytotoxic T cells that can only be stopped by allogeneic haematopoietic stem cell transplantation or gene therapy at an early stage of the disease. Recently, we identified monocytes/macrophages but not T cells to be severely affected metabolically by ABCD1 deficiency. Here we found by whole transcriptome analysis that, although monocytes of patients with X-linked adrenoleukodystrophy have normal capacity for macrophage differentiation and phagocytosis, they are pro-inflammatory skewed also in patients with adrenomyloneuropathy in the absence of cerebral inflammation. Following lipopolysaccharide activation, the ingestion of myelin debris, normally triggering anti-inflammatory polarization, did not fully reverse the pro-inflammatory status of X-linked adrenoleukodystrophy macrophages. Immunohistochemistry on post-mortem cerebral adrenoleukodystrophy lesions reflected the activation pattern by prominent presence of enlarged lipid-laden macrophages strongly positive for the pro-inflammatory marker co-stimulatory molecule CD86. Comparative analyses of lesions with matching macrophage density in cases of cerebral adrenoleukodystrophy and acute multiple sclerosis showed a similar extent of pro-inflammatory activation but a striking reduction of anti-inflammatory mannose receptor (CD206) and haemoglobin-haptoglobin receptor (CD163) expression on cerebral adrenoleukodystrophy macrophages. Accordingly, ABCD1-deficiency leads to an impaired plasticity of macrophages that is reflected in incomplete establishment of anti-inflammatory responses, thus possibly contributing to the devastating rapidly progressive demyelination in cerebral adrenoleukodystrophy that only in rare cases arrests spontaneously. These findings emphasize monocytes/macrophages as crucial therapeutic targets for preventing or stopping myelin destruction in patients with X-linked adrenoleukodystrophy.
Genetic and transcriptional analysis of flgB flagellar operon constituents in the oral spirochete Treponema denticola and their heterologous expression in enteric bacteria (1997)

Oral spirochetes possess many potential virulence factors, including the capacity for tissue invasion and persistence despite a vigorous host immune response. In an attempt to identify treponemal immunoreactive components, sera derived from individuals with advanced periodontal disease were used as a reagent to isolate recombinant bacteriophage lambda clones expressing antigens of the oral spirochete Treponema denticola ATCC 35405. Nucleotide sequence analysis of a clone expressing three immunoreactive products has revealed seven T. denticola genes which appear to encode homologs of flagellar basal body constituents, FlgB, FlgC, FliE, and FliF, a flagellar switch component, FliG, and the putative flagellar export proteins, FliH and FliI, initially characterized in Salmonella typhimurium. Also identified was a gene resembling fliJ. Primer extension analysis identified a transcriptional start site 5' to the treponemal flgB gene. Appropriately spaced with respect to this start site was a sigma28 binding motif. The absence of additional identifiable sigma factor binding motifs within the treponemal sequence and the proximity of adjacent genes suggested operonic arrangement, and reverse transcriptase PCR provided evidence of cotranscription. Supporting the identification of these genes as flagellar components, heterologous expression in enteric bacteria of the putative switch basal body genes from T. denticola interfered with motility. Specifically, the presence of a plasmid expressing treponemal fliG reduced swarming motility in S. typhimurium, while in Escherichia coli, this plasmid conferred a nonmotile phenotype and a reduction in flagellar number. Thus, while spirochetal flagella are subject to unique synthetic and functional constraints, the organization of flagellar genes and the presence of sigma28-like elements are reminiscent of the flagellar systems of other bacteria, and there appears to be sufficient conservation of constituent proteins to allow interaction between T. denticola switch-basal body proteins and the flagellar machinery of gram-negative bacteria.
Fabrication of MEMS ZnO dome-shaped-diaphragm transducers for high-frequency ultrasonic imaging (2005)

This paper presents the microfabrication technique for a dome-shaped-diaphragm transducer (DSDT) for 200 MHz cellular microstructure imaging. The DSDT uses piezoelectric ZnO film to generate acoustic waves, and is fabricated on a silicon substrate. The fabricated DSDTs have been tested with a pulse-echo method using a quartz target, and shown to produce an echo signal at 210 MHz with 20% bandwidth. The DSDT fabrication uses spherical balls to precisely shape wax molds, onto which parylene is deposited as a support layer for the DSDT. The wax molds are removed by toluene to release the parylene dome diaphragms. Piezoelectric ZnO film is sputter deposited on the parylene dome diaphragm. E-Solder silver epoxy is placed and cured on the back surface to function both as an acoustic backing and as structural support. Quarter wavelength thick parylene is deposited on the front side of the wafer for acoustic matching. The fabrication technique for the DSDTs is meant for low-cost mass production of the devices for high-frequency biomedical imaging. Moreover, the technique allows the precise control of the radius and curvature of the dome-shaped diaphragm through adjusting the size of the front-to-backside thru holes using different radii of the spherical balls.
A one-step enzyme immunoassay for the determination of total tissue-type plasminogen activator (t-PA) antigen in plasma (1992)

A reproducible and sensitive one-step enzyme immunoassay (EIA) was developed to determine total tissue-type plasminogen activator (t-PA) antigen in plasma. The EIA comprises two monoclonal catching antibodies and a polyclonal (goat) tagging antibody conjugated with horseradish peroxidase. There is an equal reactivity towards the several physiological t-PA forms, i.e., single-chain t-PA, two-chain t-PA and t-PA in complex with its naturally occurring inhibitor plasminogen activator inhibitor-type 1 (t-PA/PAI-1 complex). Additionally, the EIA does not discriminate between human melanoma t-PA and recombinant t-PA (Activase). The assay has a lower detection limit of approximately 0.5 ng t-PA per ml plasma, with a time-to-result of only 3.5 h.
DYNAMIC MODELING AND CONSISTENT INITIALIZATION OF SYSTEM OF DIFFERENTIAL-ALGEBRAIC EQUATIONS FOR CENTRIFUGAL CHILLERS (2010)

For simulation of centrifugal chiller system with differential algebraic equations (DAEs), consistent initial conditions are difficult to obtain due to the two- phase refrigerant cycle and the connections between several components. Existing rigorous initialization methods are generally not suitable for the particular problem of centrifugal chiller simulation. In this paper, the dynamic model of a water-cooled centrifugal chiller is developed in Modelica with Dymola and the TLK/IfT Library (TIL). A direct initialization method is proposed for the consistent initialization for centrifugal chiller. Simulation results have shown the effectiveness of the proposed modeling framework and the initialization method.
A facile chemical screening method for the detection of stress corrosion cracking in 9 carat gold alloys (2009)

Stress corrosion cracking (SCC) is a well known form of environmental attack in low carat gold jewellery. It is desirable to have a quick, easy and cost effective way to detect SCC in alloys and prevent them from being used and later failing in their application. A facile chemical method to investigate SCC of 9 carat gold alloys is demonstrated. It involves a simple application of tensile stress to a wire sample in a corrosive environment such as 1–10 % FeCl3 which induces failure in less than 5 minutes. In this study three quaternary (Au, Ag, Cu and Zn) 9 carat gold alloy compositions were investigated for their resistance to SCC and the relationship between time to failure and processing conditions is studied. It is envisaged that the use of such a rapid and facile screening procedure at the production stage may readily identify alloy treatments that produce jewellery that will be susceptible to SCC in its lifetime.
Moment method analysis of infinite stripline-fed tapered slot antenna arrays with a ground plane (1994)

A full-wave method of moments solution for infinite arrays of stripline-fed tapered slot antennas is described. The formulation of the problem is sufficiently general to permit performance evaluation of most of the geometries that have been proposed for stripline-fed antennas as well as of several other types of array antennas. Computed results for some well-known antenna arrays are presented to demonstrate the validity and accuracy of the method. Excellent agreement with published results has been obtained for scattering from corrugated surfaces and grounded dielectric slabs and for the input impedance of dipole and monopole arrays. Catastrophic effects such as scan blindness are accurately predicted. A sample result showing the measured and computed input impedance of a stripline-fed tapered slot antenna array is also presented.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Fibrinopeptide A binds Gly-Pro-Arg-Pro. (1984)

The tetrapeptide Gly-Pro-Arg-Pro inhibits fibrinogen aggregation, probably by binding to the same sites used during initiation of fibrin formation. The Gly-Pro-Arg-Pro binding sites have not yet been identified. However, their possible sequence and locations have been predicted on the basis of the amino acid pairing hypothesis. One of these predicted sites is on fibrinopeptide A. We report here that nuclear magnetic resonance studies indicate that Gly-Pro-Arg-Pro binds to fibrinopeptide A with a binding constant, K, of ca. 10(4) per mol. We also report results of 19 related peptide combinations used as controls.
The simulation of pantograph and Catenary: a PDAE approach (1998)

Recently, the coupled dynamical simulation of pantograph and catenary in high speed trains has found much interest. The equations of motion form a partial differentialalgebraic equation (PDAE) that combines a partial differential equation (PDE) for the catenary and a differential-algebraic equation (DAE) for the pantograph. In the present paper we discuss the relation of this PDAE model to current work on the analysis of PDAE&apos;s [3, 17, 18] and formulate a benchmark problem to stimulate further research on this topic. The benchmark problem is solved numerically using a semidiscretization in space (by finite elements or finite differences). For time discretization, typical DAE techniques are applied (index reduction, projection steps, handling of systems with varying structure). Key words: interaction pantograph/catenary, mechanical multibody system, partial differential-algebraic equation (PDAE). 1 INTRODUCTION The contact between pantograph and catenary is the most critical part in th...
Myeloid cell expansion elicited by the progression of spontaneous mammary carcinomas in c-erbB-2 transgenic BALB/c mice suppresses immune reactivity (2003)

Transgenic female mice expressing the transforming rat oncogene c-erbB-2 (HER-2/neu) under the mouse mammary tumor virus (MMTV) promoter (BALB-neuT) spontaneously develop mammary carcinomas with a progression resembling that of human breast cancer. In these mice, activating antitumor immunotherapy fails to induce T cell-mediated cytotoxicity, suggesting a suppression of the immune response. We found a direct correlation between tumor multiplicity and an increased proportion of Gr-1+ (Ly6G)/Mac-1+(CD11b)/ER-MP12+(CD31) immature myeloid cells in the peripheral blood (PB) and spleen, suggesting that tumor load profoundly affects overall BALB-neuT hematopoiesis. In fact, myeloid colony formation was increased in bone marrow (BM) and spleen. The immature myeloid cells displayed suppressive activity on host T lymphocytes, which progressively failed to respond to alloantigens and CD3 triggering, while maintaining the ability to proliferate in response to nonspecific mitogens. Transplantation of normal BM into BALB-neuT mice readily resulted in hypertrophic hematopoiesis with myeloid cell expansion. This persistent influence of the tumor was mediated through the release of vascular endothelial growth factor (VEGF) but not granulocyte-macrophage colony-stimulating factor (GM-CSF), and was down-modulated when tumor load was reduced but not when BM was transplanted. Together, the data obtained in the BALB-neuT model of naturally occurring carcinogenesis show that tumor-associated immune suppression is secondary to a more general alteration of host hematopoiesis, conditioned by tumor-secreted soluble factors.