gebhart/patrepeval huggingface dataset:
Correlation mechanism of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>f</mml:mi></mml:math>-electron delocalization (2000)

The mechanism of f-electron delocalization is investigated within the multiorbital Anderson lattice model by means of diagrammatic perturbation theory from the atomic limit. The derived equations couple the intra-atomic transition energies, their spectral weights, and the population numbers of the many-electron states. A self-consistent solution for praseodymium metal shows that the delocalization can be caused by external pressure via a resonant mixing of f and conduction electrons in the vicinity of the the Fermi surface. We also find the following. (1) An increase of mixing leads to a decrease of the physical values of the Hubbard interactions ${U}^{*};$ the reduction, however, is small. (2) The initial Hubbard U is split by renormalization into a set of different physical values of ${U}_{i,j}^{*}.$ (3) The gain in cohesive energy together with the f-sum rule cause a transfer of spectral weight, which is decisive for the delocalization of $f$ electrons. (4) The correlated fermionic quasiparticles have their bandwidth slightly reduced compared to those obtained using the Kohn-Sham equation.
Classification by Boosting Differences in Input Vectors: An application to datasets from Astronomy (2012)

There are many occasions when one does not have complete information in order to classify objects into different classes, and yet it is important to do the best one can since other decisions depend on that. In astronomy, especially time-domain astronomy, this situation is common when a transient is detected and one wishes to determine what it is in order to decide if one must follow it. We propose to use the Difference Boosting Neural Network (DBNN) which can boost differences between feature vectors of different objects in order to differentiate between them. We apply it to the publicly available data of the Catalina Real-Time Transient Survey (CRTS) and present preliminary results. We also describe another use with a stellar spectral library to identify spectra based on a few features. The technique itself is more general and can be applied to a varied class of problems.
MEMS-based systems for DNA sequencing and forensics (2003)

We outline some of the most important scientific problems that were overcome in this multiyear project. These include (a) the high-yield microfabrication of zero-defect bonded glass plates at sizes greatly exceeding semiconductor fabrication, (b) the integration of electrodes, reservoirs, and high-pressure seals into these plates, (c) detector optimization for the required very high rate data acquisition and (d) microfluidics issues and optimizations related to channel geometry.
Some New Pentavalent Salts of Triarylbismuth Compounds<sup>1</sup> (1951)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSome New Pentavalent Salts of Triarylbismuth Compounds1Henry Gilman and Harry L. YaleCite this: J. Am. Chem. Soc. 1951, 73, 9, 4470–4471Publication Date (Print):September 1, 1951Publication History Published online1 May 2002Published inissue 1 September 1951https://doi.org/10.1021/ja01153a518RIGHTS & PERMISSIONSArticle Views72Altmetric-Citations15LEARN 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 (284 KB) Get e-Alerts Get e-Alerts
Supply of reactants for Redox bulk energy storage systems (1978)

World resources, reserves, production, and costs of reactant materials, iron, chromium, titanium and bromine for proposed redox cell bulk energy storage systems are reviewed. Supplying required materials for multimegawatt hour systems appears to be feasible even at current production levels. Iron and chromium ores are the most abundant and lowest cost of four reactants. Chromium is not a domestic reserve, but redox system installations would represent a small fraction of U.S. imports. Vast quantities of bromine are available, but present production is low and therefore cost is high. Titanium is currently available at reasonable cost, with ample reserves available for the next fifty years.
On-Line Temperature Measurement In Hot Rolling Of Aluminum Using Infrared Imaging Systems (1989)

In this paper we report our experience using infrared imaging systems to monitor temperature variations in aluminum strip during hot rolling. Because of the low emissivity of aluminum surfaces infrared cameras are sensitive not only to temperature variations in the strip, but also to changes in surface characteristics caused by changes in alloy and surface roughness. In the system described in this paper, process information from the mill control computer is used to automatically select emissivity factors from a lookup table. A second technique for adjusting emissivity factors, using reference point temperatures measured by a separate sensor will also be described. Results from tests, comparing temperatures measured by infrared imaging systems with contact temperature probes indicate good agreement between the two techniques at later stages in the hot rolling process, when surface emissivity is uniform. Factors affecting the installation of a thermal imaging system on a production line, in particular the location of the camera and integration with other temperature measurement systems, are also discussed.
Physiological factors affecting production of extracellular lipase (LipA) in Acinetobacter calcoaceticus BD413: fatty acid repression of lipA expression and degradation of LipA (1996)

The extracellular lipase (LipA) produced by Acinetobacter calcoaceticus BD413 is required for growth of the organism on triolein, since mutant strains that lack an active lipase fail to grow with triolein as the sole carbon source. Surprisingly, extracellular lipase activity and expression of the structural lipase gene (lipA), the latter measured through lacZ as a transcriptional reporter, are extremely low in triolein cultures of LipA+ strains. The explanation for this interesting paradox lies in the effect of fatty acids on the expression of lipA. We found that long-chain fatty acids, especially, strongly repress the expression of lipA, thereby negatively influencing the production of lipase. We propose the involvement of a fatty acyl-responsive DNA-binding protein in regulation of expression of the A. calcoaceticus lipBA operon. The potential biological significance of the observed physiological competition between expression and repression of lipA in the triolein medium is discussed. Activity of the extracellular lipase is also negatively affected by proteolytic degradation, as shown in in vitro stability experiments and by Western blotting (immunoblotting) of concentrated supernatants of stationary-phase cultures. In fact, the relatively high levels of extracellular lipase produced in the early stationary phase in media which contain hexadecane are due only to enhanced stability of the extracellular enzyme under those conditions. The rapid extracellular degradation of LipA of A. calcoaceticus BD413 by an endogenous protease is remarkable and suggests that proteolytic degradation of the enzyme is another important factor in regulating the level of active extracellular lipase.
Expert system for vehicle body assembly conceptual design (2006)

The paper introduces the architecture of conceptual assembly expert system, which makes fuzzy and qualitative presentation of design knowledge in the conceptual assembly design stage. Qualitative simulation approach in the expert system is a new approach to designing assemblies' tolerance design and joint configuration in the conceptual design. Also, qualitative analysis assists designers to determine feasible assembly sequences. The system creates a rough draft of a set of promising design solutions that would be analyzed in more detail in the later design stages.
Epidermal Growth Factor Receptor-Dependent Regulation of Integrin-Mediated Signaling and Cell Cycle Entry in Epithelial Cells (2004)

Integrin-mediated adhesion of epithelial cells to extracellular matrix (ECM) proteins induces prolonged tyrosine phosphorylation and partial activation of epidermal growth factor receptor (EGFR) in an integrin-dependent and EGFR ligand-independent manner. Integrin-mediated activation of EGFR in epithelial cells is required for multiple signal transduction events previously shown to be induced by cell adhesion to matrix proteins, including tyrosine phosphorylation of Shc, Cbl, and phospholipase Cgamma, and activation of the Ras/Erk and phosphatidylinositol 3'-kinase/Akt signaling pathways. In contrast, activation of focal adhesion kinase, Src, and protein kinase C, adhesion to matrix proteins, cell spreading, migration, and actin cytoskeletal rearrangements are induced independently of EGFR kinase activity. The ability of integrins to induce the activation of EGFR and its subsequent regulation of Erk and Akt activation permitted adhesion-dependent induction of cyclin D1 and p21, Rb phosphorylation, and activation of cdk4 in epithelial cells in the absence of exogenous growth factors. Adhesion of epithelial cells to the ECM failed to efficiently induce degradation of p27, to induce cdk2 activity, or to induce Myc and cyclin A synthesis; subsequently, cells did not progress into S phase. Treatment of ECM-adherent cells with EGF, or overexpression of EGFR or Myc, resulted in restoration of late-G(1) cell cycle events and progression into S phase. These results indicate that partial activation of EGFR by integrin receptors plays an important role in mediating events triggered by epithelial cell attachment to ECM; EGFR is necessary for activation of multiple integrin-induced signaling enzymes and sufficient for early events in G(1) cell cycle progression. Furthermore, these findings suggest that EGFR or Myc overexpression may provoke ligand-independent proliferation in matrix-attached cells in vivo and could contribute to carcinoma development.
Composition and origins of aerosol at a forested mountain in Soviet Georgia (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComposition and origins of aerosol at a forested mountain in Soviet GeorgiaThomas G. Dzubay, Robert K. Stevens, and Phillip L. HaagensonCite this: Environ. Sci. Technol. 1984, 18, 11, 873–883Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November 1984https://pubs.acs.org/doi/10.1021/es00129a012https://doi.org/10.1021/es00129a012research-articleACS PublicationsRequest reuse permissionsArticle Views52Altmetric-Citations22LEARN 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
SAMOA: a cell based optical ATM system using TCM transmission mode for the user network interface (2003)

The SAMOA system (a TCM optical microcontrolled system for ATM) is described. It will be used for the UNI (user network interface) of the BISDN. This system transforms a 155.520-Mb/s cell based data flow in a burst cell based data flow. The first physical layer can be implemented in a set of hybrid modules, and the second physical layer uses two CMOS ASICs in accord with the cell based option of the CCITT 1432 recommendation. One of those hybrid modules is an opto hybrid device. The hybrid technique is the only one that works with the 622.08-Mb/s rate used in this system.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Future of atomic spectrometry for environmental analysis (1998)

Environmental analyses for trace metals are currently being driven by three major factors: the demand for more elements at lower concentration levels; the increasing interest in elemental speciation due to the issues of bioavailability and toxicity; and the greater need to minimize contamination and sample work-up as a consequence of enhanced instrumental limits of detection. These three ‘tenets’ are themselves tempered by the growing cost of analyses which requires reduced sample consumption and waste generation (disposal concerns). Multielemental optical and mass spectrometric techniques coupled to on-line sample preparation and direct solids analysis approaches will play a dominant role in future commercial environmental laboratories. Few, if any, cost effective alternatives are available to conduct inorganic environmental analyses, thereby assuring the continued reliance on atomic spectroscopic techniques. Prediction of specific sources and detection systems likely to be in use is less straight-forward, but it is not inconceivable that new approaches will be fostered by evolutionary rather than evolutionary processes; todays' ‘research’ prototypes will form the basis of tomorrows' work-horse instrumentation. The current state-of-the-art is reviewed and examples of future technologies presented.
Effects of Monensin on Posttranslational Processing of Myelin Proteins (1983)

Rat brain slices were incubated with [3H]palmitic acid and [14C]glycine to label the lipid and protein moieties, respectively, of myelin proteolipid protein (PLP). The effects of monensin on posttranslational processing of proteins were examined by measuring the appearance of [14C]glycine- and [3H]palmitate-labeled proteins in myelin and myelin-like fractions. At 0.01 and 0.10 microM, monensin did not appreciably affect total lipid or protein synthesis; higher concentrations caused increased inhibition. Monensin at 0.10 microM markedly decreased the appearance of [14C]glycine-labeled PLP in myelin, but had little effect on the 14C basic proteins or the incorporation of [3H]palmitic acid into total or myelin PLP. The same relative effect was apparent at higher monensin concentrations. In the myelin-like fraction, monensin at 0.10 microM also depressed entry of [14C]glycine into protein comigrating with PLP, and again had no effect on incorporation of [3H]palmitic acid. In addition, monensin increased the [3H]palmitate label associated with two high-molecular-weight proteins in the myelin-like fraction with no concomitant increase in [14C]glycine label.
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">N</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>+<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>Neutralization Cross-Section Measurements Using a Superimposed-Beam Technique (1968)

The two-body ${\mathrm{N}}^{+}$ + ${\mathrm{O}}^{\ensuremath{-}}$ neutralization cross section has been measured via a superimposed-beam technique. The energy range in the barycentric coordinate system is 0.1-86 eV with about 0.1-eV resolution. The measured value of the neutralization cross section, $Q$, times the relative speed, $v$, is approximately constant (9\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}8}$ ${\mathrm{cm}}^{3}$/sec), except below 0.5 eV, where $\mathrm{Qv}$ increases rapidly with decreasing energy.
Licensed receiver detection and authentication in simplex licensed networks (2011)

Cognitive radio (CR) technology enables the unlicensed user to access the spectrum holes left by the licensed user (LU), subjecting to a basic requirement of no interference on the active LUs. Nevertheless the LU protection can be misused by malicious CRs through emulating LUs. Observing that the real protection object is the licensed receiver (LR) rather than the licensed transmitter (LT), the research of licensed user emulation attack is dedicated to its genuine form, LR emulation (LRE) attack. Based on the analysis on all possible defense schemes, a digital signature based LRE defense system in the simplex licensed network (SLN) environment is proven practical. The defense mechanism is composed of signature design for LR authentication, as well as the design of public key infrastructure (PKI), used for the distribution of certificates for the LR signatures. With the aim to minimize the communication cost for maintaining the PKI, we propose a certification tree with LR ramification (CTLR) mechanism for certificate request and reply.
The characterization of the total stress of concentrated suspensions of noncolloidal spheres in Newtonian fluids (2000)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Isidro E. Zarraga, Davide A. Hill, David T. Leighton; The characterization of the total stress of concentrated suspensions of noncolloidal spheres in Newtonian fluids. Journal of Rheology 1 March 2000; 44 (2): 185–220. https://doi.org/10.1122/1.551083 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentThe Society of RheologyJournal of Rheology Search Advanced Search |Citation Search
ChemInform Abstract: SYNTHETIC MODEL APPROACH TO THE ACTIVE SITE STRUCTURE OF CYTOCHROME OXIDASE. NOVEL PORPHYRIN‐CONTAINING HETEROBINUCLEAR IRON(III)‐COPPER(II) COMPLEXES (1982)

Abstract Durch Kondensation von 3,3′,4,4′‐Tetramethyl‐2,2′‐dipyrromethan mit o‐Nitrobenzaldehyd wurde nach Aufarbeitung ein entsprechendes Porphyrinderivat erhalten, dessen oga‐Isomeres durch Kondensation mit 2,6‐Pyridyl‐bis‐[4′‐thia‐5′‐pentanoylchlorid] die Verbindung (I) liefert, aus der nach bekannter Methode der Fe(III)‐ Komplex (IIa) dargestellt wurde, der durch Behandeln mit NaOH in CHCl 3 ‐Lösung nach Chromatographie und Umkristallisation zu dem Hämatinhydrat (IIb) führt.
Experimental verification of the thermodynamic properties for a jet-A fuel (1988)

Thermodynamic properties for a Jet-A fuel were determined by Shell Development Company in 1970 under a contract for NASA Lewis Research Center. The polynomial fit necessary to include Jet-A fuel (liquid and gaseous phases) in the library of thermodynamic properties of the NASA Lewis Chemical Equilibrium Program is calculated. To verify the thermodynamic data, the temperatures of mixtures of liquid Jet-A injected into a hot nitrogen stream were experimentally measured and compared to those calculated by the program. Iso-octane, a fuel for which the thermodynamic properties are well known, was used as a standard to calibrate the apparatus. The measured temperatures for the iso-octane/nitrogen mixtures reproduced the calculated temperatures except for a small loss due to the non-adiabatic behavior of the apparatus. The measurements for Jet-A were corrected for this heat loss and showed excellent agreement with the calculated temperatures. These experiments show that this process can be adequately described by the thermodynamic properties fitted for the Chemical Equilibrium Program.
[A case of hypersensitivity pneumonitis presenting with copious sputum and marked obstructive impairment of lung function]. (1992)

A 44-year-old male was hospitalized due to dyspnea and persistent cough with copious sputum (about 100 ml/day). Chest radiograph on admission showed hyperinflation and fine nodular shadows throughout both lungs, as well as a tram line appearance in the right lower lung field which suggested thickening of bronchial walls. Pulmonary function tests demonstrated moderate to severe reduction of %VC, FEV1.0 and PaO2. Fiberoptic bronchoscopy revealed inflammatory change in the walls of proximal bronchi. Although his dyspnea resolved rapidly, productive cough and impaired lung function were persistent and improved very slowly over the one-month-period following admission. After resolution, similar symptoms were provoked again 5 to 6 hours after returning to his home, suggesting the recurrence of hypersensitivity pneumonitis. Open lung biopsy was performed for the differential diagnosis of hypersensitivity, diffuse panbronchiolitis, and bronchial asthma, because neither transbronchial lung biopsy nor broncho-alveolar lavage was diagnostic. Histopathology of the open lung biopsy specimens revealed marked desquamation of bronchiolar epithelium in addition to bronchiolo-alveolitis with epithelial granulomas, consistent with hypersensitivity pneumonitis. Copious sputum is a very uncommon clinical feature in hypersensitivity pneumonitis. We consider that the large volume of airway fluid was caused by epithelial ulceration of bronchioles and catarrhal bronchitis associated with hypersensitivity pneumonitis.
Energetic analysis of binding of progesterone and 5β-androstane-3,17-dione to anti-progesterone antibody DB3 using molecular dynamics and free energy calculations (2001)

Molecular dynamics simulations and molecular mechanics-Poisson-Boltzmann surface area (MM-PBSA) free energy calculations were used to study the energetics of the binding of progesterone (PRG) and 5 beta-androstane-3,17-dione (5AD) to anti-PRG antibody DB3. Although the two steroids bind to DB3 in different orientations, their binding affinities are of the same magnitude, 1 nM for PRG and 8 nM for 5AD. The calculated relative binding free energy of the steroids, 8.8 kJ/mol, is in fair agreement with the experimental energy, 5.4 kJ/mol. In addition, computational alanine scanning was applied to study the role of selected amino acid residues of the ligand-binding site on the steroid cross-reactivity. The electrostatic and van der Waals components of the total binding free energies were found to favour more the binding of PRG, whereas solvation energies were more favourable for the binding of 5AD. The differences in the free energy components are due to the binding of the A rings of the steroids to different binding pockets: PRG is bound to a pocket in which electrostatic antibody-steroid interactions are dominating, whereas 5AD is bound to a pocket in which van der Waals and hydrophobic interactions dominate.