gebhart/patrepeval huggingface dataset:
High Thermoelectric Performance in SnTe–AgSbTe2 Alloys from Lattice Softening, Giant Phonon–Vacancy Scattering, and Valence Band Convergence (2018)

We report on the underlying mechanism that enables the SnTe–AgSbTe2 system to exhibit superior thermoelectric figure of merit (ZT) compared to its parent compound SnTe. We show that AgSbTe2 alloying has a profound impact on the band structure of SnTe by converging the energies of its light and heavy valence bands, leading to significantly enhanced Seebeck coefficients. We have also unraveled a significant connection between alloying and defect stability in this system, wherein the Sn vacancy concentration increases significantly when Ag and Sb are alloyed on the Sn site. The increased Sn vacancy concentration dramatically reduces the lattice thermal conductivity through both lattice softening and phonon–vacancy scattering to ∼0.4 W m–1 K–1 at 800 K. Consequently, a ZT value of 1.2 at 800 K for AgSn5SbTe7 can be achieved by doping I on Te sites. This represents a 300% improvement over pristine SnTe, outperforming many reported SnTe-based thermoelectric materials.
Influence of dielectric substrate on the responsivity of microstrip dipole-antenna-coupled infrared microbolometers (2002)

We report on the influence of the dielectric substrate on the performance of microstrip dipole-antenna-coupled microbolometers. The location, the width, and the magnitude of the resonance of a printed dipole are altered when the dielectric substrate is backed by a ground plane. A thicker dielectric substrate shifts the antenna resonance toward shorter dipole lengths and leads to a stronger and slower detector response. The incorporation of an air layer into the antenna substrate further increases thermal impedance, leading to an even stronger response and shifting the antenna resonance toward longer dipole lengths.
Radar target detection and Doppler ambiguity resolution (2010)

A Continuous Wave (CW) radar with a linear Frequency Modulation (FM) and a very short chirp duration is considered in this paper. A single target range and Doppler frequency measurement consits of a sequence of L chirp signals with the same chirp duration. The maximum unambiguously measurable radial velocity in this case is limited by a minimum chirp duration. Therefore fast moving targets will cause ambiguous measurement results, that have to be resolved. The technique of resolving ambiguities on the basis of several subsequent measurements with different ambiguity interval lengths is well known as Chinese Remainder Theorem (CRT). It has been extensively described in literature [2]. Two different signal processing approaches to apply this technique for the resolution of ambiguities are compared in this paper. These do not differ in terms of the ambiguity resolution itself, because they are based on the same principle. The detection performance however is different.
Effect of Adhesive Nano-Additives on Static Load Transfer Capacity and Failure Mode of Bonded Steel-Magnesium Single Lap Joints (2015)

An experimental procedure and test setup is used for investigating effect of using nanoparticle additives to the adhesive on the load transfer capacity (LTC) of bonded magnesium (Mg)-steel (St) single lap joints (SLJ). Investigated variables include the nano-powder material (Alumina vs. Silica), particulate size (20 nm vs. 80 nm), and concentration in the adhesive (2.5% wt. vs 5.0 % wt.). Two different levels of surface roughness on the bonded area are used; namely, sanding the bond area with G60 or G180 sand paper. Test data and SEM failure mode analysis are provided.
Efficient access enforcement in distributed role-based access control (RBAC) deployments (2009)

We address the distributed setting for enforcement of a centralized Role-Based Access Control (RBAC) protection state. We present a new approach for time- and space-efficient access enforcement. Underlying our approach is a data structure that we call a cascade Bloom filter. We describe our approach, provide details about the cascade Bloom filter, its associated algorithms, soundness and completeness properties for those algorithms, and provide an empirical validation for distributed access enforcement of RBAC. We demonstrate that even in low-capability devices such as WiFi network access points, we can perform thousands of access checks in a second.
Esophagectomy Outcomes after Implementation of an Enhanced Recovery after Surgery Program (2019)

Haro, Greg J. MD; Sheu, Fang Yu MD; Rogers, Stanley J. MD; Jablons, David M. MD, FACS; Kratz, Johannes R. MD Author Information
Large-Scale Drug Screens Support Precision Medicine (2015)

The major challenge underlying the emerging precision medicine initiative is to make links between cancer subsets and drugs that can be used to guide treatment of individual patients, leading to improved outcomes and decreased toxicity. Seashore-Ludlow and colleagues support this effort by reporting measurements of responses of 664 adherent cancer cell lines to 70 FDA-approved drugs, 100 experimental compounds, and 311 small-molecule probes. They use a novel Annotated Cluster Multidimensional Enrichment algorithm to identify drug mechanisms of action, molecular markers of response, responsive cancer subtypes, and compounds that produce synergistic cell inhibition.
Overexpression of a serine hydroxymethyltransferase increases biomass production and reduces recalcitrance in the bioenergy crop Populus (2018)

Cell wall recalcitrance is the major obstacle for plant biomass conversion to biofuels.
Correction to: Barite–Micromax mixture, an enhanced weighting agent for the elimination of barite sag in invert emulsion drilling fluids (2020)

In the original publication of the article, the temperature indicating that all “K” (Kelvin) unit designations should be replaced by “F” (Fahrenheit) unit designations. The correct PDF has been attached.
<title>Switching characteristic of wideband MSM and PIN photodetectors for photonic phased-array antennas</title> (2000)

The switching characteristic of wide-band MSM and PIN photodetectors has been studied in theory and experiments. MSM detector has threshold bias voltage to activate its response and so has a better performance than PIN photodetectors when working as a photo-electronic switch. However, our study tells that through a suitable designed bias circuit, the PIN photodetector also can provide a switching operation with considerable performance. Especially for RF photonic signal, the extinction ratio can reach around 30dB. At different bias condition, the gain of PIN can be continually tuned and it has very important application in photonic phased-array antenna system.
Ejection System Design (2022)

No AccessInjection Mold Design EngineeringOct 2022Ejection System DesignDavid O. KazmerDavid O. KazmerSearch for more papers by this authorhttps://doi.org/10.3139/9781569908921.011SectionsAboutPDF ToolsAdd to FavoritesDownload CitationTrack CitationsCopy LTI LinkPDF key 'share (en)' returned an object instead of string.FacebookTwitterEmailLinkedIn previous chapternext chapter FiguresReferencesRelatedDetails 2022Pages: 395-447Print ISBN: 978-1-56990-891-4eISBN: 978-1-56990-892-1 Copyright & Permissions© 2022 Carl Hanser Verlag GmbH & Co. KGPDF downloadLoading ...
Intrarenal and subcellular localization of rat CLC5 (1998)

Dent's disease, an inherited disorder characterized by hypercalciuria, nephrolithiasis, nephrocalcinosis, rickets, low-molecular-weight proteinuria, Fanconi's syndrome, and renal failure, is caused by mutations in the renal chloride channel, CLC5. The normal role of CLC5 is unknown. We have investigated the intrarenal and subcellular localization of CLC5 in rat kidney by in situ hybridization and immunohistochemistry. By in situ hybridization, CLC5 mRNA was detected predominantly in cortical medullary ray and outer medullary tubule epithelial cells. Polyclonal antiserum was generated against a CLC5 fusion protein, affinity purified, and immunoadsorbed against CLC3 and CLC4 to yield a CLC5 isoform-specific antiserum. By immunohistochemistry, CLC5 protein was localized to the intracellular domain of tubular epithelial cells in the S3 segment of the proximal tubule and the medullary thick ascending limb. By subcellular membrane fractionation and flow cytometry, CLC5 expression was found in outer medullary endosomes. These findings are consistent with a model in which CLC5 encodes an endosomal chloride channel that facilitates acidification and trafficking of renal epithelial endosomes.
PREFACE (1981)

ADVERTISEMENT RETURN TO BOOKPREVPrefaceNEXTPREFACEJAMES E. MCGRATHJAMES E. MCGRATHChemistry Department and Polymer Materials and Interfaces Laboratory Virginia Polytechnic Institute and State University Blacksburg, VirginiaMore by JAMES E. MCGRATHDOI: 10.1021/bk-1981-0166.pr001 This publication is free to access through this site. Learn MorePublication Date (Print):November 30, 1981Publication History Published online23 July 2009Published inprint 30 November 1981Request reuse permissions Copyright © 1981 AMERICAN CHEMICAL SOCIETY. This publication is available under these Terms of Use. Anionic Polymerizationpp xi-xiiiACS Symposium SeriesVol. 166ISBN13: 9780841206434eISBN: 9780841208421Chapter Views154Citations-LEARN ABOUT THESE METRICSChapter 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. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail PDF (405 KB) Get e-Alerts
Antimony segregation in the oxidation of strained AlAsSb interlayers (2003)

Lateral wet oxidation of AlAs/sub 1-x/Sb/sub x/ compounds is of crucial importance to the fabrication of high-efficiency electronic devices on InP substrates. Lateral oxidation has proved essential in vertical-cavity surface emitting lasers (VCSELs). A combined optical and electrical aperture is created by partially oxidizing the epilayer, reducing losses at the surface and improving the lasing efficiency. Also, the oxidation of the underlying material below transistors enables oxide gate insulators and device isolation.
5-Methylcytidine is required for cooperative binding of magnesium(2+) and a conformational transition at the anticodon stem-loop of yeast phenylalanine tRNA (1993)

The role of modified nucleosides in tRNA structure and ion binding has been investigated with chemically synthesized RNAs corresponding to the yeast tRNA(Phe) anticodon stem and loop (tRNA(ACPhe). Incorporation of d(m5C) at position 14 of the stem of tRNA(ACPhe)-d(m5C14), CCAGACUGAAGAU-d(m5C14)-UGG, analogous to m5C40 in native tRNA(Phe), introduced a strong Mg2+ binding at a site distant from the m5C. A Mg(2+)-induced structural transition, detected by circular dichroism spectroscopy, was similar to that observed for the DNA analog of tRNA(ACPhe) (Guenther et al., 1992; Dao et al., 1992). In contrast, Mg2+ had little effect on unmodified tRNA(ACPhe)-rC14 or tRNA(ACPhe)-d(C14). Modified tRNA(ACPhe)-d(m5C14) bound two Mg2+ ions, and the binding was cooperative. The dissociation constant of the two Mg2+ ions from tRNA(ACPhe)-d(m5C14), 2.5 x 10(-9) M2, is the result of an RNA structure significantly stabilized by Mg2+ binding, delta G = -11.7 kcal/mol. The tRNA(ACPhe)-d(m5C14) structure, investigated by 1H NMR, had a double stranded stem of five base pairs and two additional base pairs across what was a seven membered loop in the unmodified tRNA(Phe)AC. Methylation of cytidine in the yeast tRNA(ACPhe) enables the molecule to form more than one conformation through a process regulated by Mg2+ concentration. Thus, the simplest of posttranscriptional modifications of tRNA, a methylation, is involved in a somewhat distant, internal-site Mg2+ binding and stabilization of tRNA structure, especially that of the anticodon stem and loop.
Acoustic pattern matching and beam searching (2005)

Dynamic programming (DP) has become a popular means of performing the necessary time warping in isolated word recognition. DP offers the advantage of always finding the optimal fit of a known reference pattern against an unknown input utterance. Unfortunately, DP has two major disadvantages: 1) The amount of data needed to store the known reference patterns can be very large and 2) the computation needed to do the full DP search is intensive. Because of these problems, DP has not yet become feasible for commercial low cost speaker dependent isolated word recognition systems. We present two means of reducing both the storage requirements and the computation needed for the DP search: 1) a segmentation scheme for the reduction of data (and thereby computation) which typically reduces the speech data by a factor of between 3 and 4 and 2) a modification of the Beam search used by the Harpy speech recognition system which provides a substantial speedup over conventional DP. Together, computation is reduced by an order of magnitude.
Nonlinear pH sensitivity of molecular modified transistors (2010)

The integration of organic self-assembled monolayers (SAMs) in electronic devices is very attractive since they offer high flexibility in design and applications. This paper models the operation of functionalized field effect transistor with a liquid gate. The model explains the nonlinear response to pH variations in SAM-field effect devices. The organic monolayers have low density of sites in comparison to inorganic layers; furthermore, the transistor sensitivity to pH is low and dramatically influenced by the Helmholtz capacitance. It was proven that the dissociation constants have a strong effect on the characteristics of organic field effect device.
Promoting Effect of CeO2 on the Catalytic Activity of Rhodium Supported on Y-Stabilized ZrO2 for NO–CO–C3H6–O2 Reactions (2012)

Abstract The catalytic activity of Rh supported on Y-stabilized ZrO2 for NO–CO–C3H6–O2 reactions under stoichiometric conditions was improved by the addition of 5 mol % CeO2, whereas an excess amount of CeO2 of more than 10 mol % caused a decrease in the NO reduction activity. The improvement was ascribed to the formation of easily reducible Rh species through interaction with a Ce–Zr solid solution.
Adaptive Routing in High-Radix Clos Network (2006)

Recent increases in the pin bandwidth of integratedcircuits has motivated an increase in the degree or radix of interconnection network routers. The folded-Clos network can take advantage of these high-radix routers and this paper investigates adaptive routing in such networks. We show that adaptive routing, if done properly, outperforms oblivious routing by providing lower latency, lower latency variance, and higher throughput with limited buffering. Adaptive routing is particularly useful in load balancing around nonuniformities caused by deterministically routed traffic or the presence of faults in the network. We evaluate alternative allocation algorithms used in adaptive routing and compare their performance. The use of randomization in the allocation algorithms can simplify the implementation while sacrificing minimal performance. The cost of adaptive routing, in terms of router latency and area, is increased in high-radix routers. We show that the use of imprecise queue information reduces the implementation complexity and precomputation of the allocations minimizes the impact of adaptive routing on router latency.
A comparison between FORE+NECOSEM and NECOSEM 3D for whole-body PET imaging (2004)

In this work we use the NEC transformation method in the OSEM reconstruction technique as a procedure to partially restore the Poisson characteristics of 3D whole-body PET precorrected data. We compare the use of FORE+NEC-OSEM with a fully 3D implementation of NEC-OSEM, in terms of lesion detectability, using a 3D version of the nonprewhitening matched filter numerical observer. In FORE+NEC-OSEM, only a multiplicative weight was applied (NEC-scaling) that accounts for the effects of both the quantitative corrections and FORE itself. For the fully 3D reconstruction, the generalized NEC-transformation was used (NECG-OSEM3D), with both multiplicative (NEC-scaling) and additive (NEC-shifting) factors to account for the effects of the corrections. In addition to NEC-OSEM, FORE+AW-OSEM (attenuation weighted) and ANW-OSEM3D (attenuation and normalization weighted) were also tested. We used simulated data of 3D whole-body PET exams with 1 cm diameter inserted lesions to perform the study. From the results we conclude: for the existence of an optimum postsmoothing filter with FWHM of 5.5 mm; for an overall better performance of both ANW-OSEM3D and FORE+NEC-OSEM over FORE+AW-OSEM. The comparison between NECG-OSEM3D and the other algorithms depends very much on the number of iterations. The NPWMF numerical observer seems not to be the best figure-of-merit to determine the optimum number of iterations the NPWMF.
Tissue stiffness from tactile imaging (2002)

Tactile imaging uses a passive pressure sensitive sensor to record the reaction pressure distribution on its surface. When pressed into and scanned over tissue of interest, it generates an image that is dependent on the mechanical properties and geometric distribution of the structures within the tissue. Since pathology is related to tissue stiffness, stiffness measurement would be of great use to provide insight into disease processes and an aid to diagnosis. We have developed an algorithm that inverts the tactile image and determines the salient features of the underlying tissue. The features of interest are the stiffness and depth of the background tissue and the stiffness and size of a round inclusion. A finite element model was constructed in order to simulate the tactile imaging process. The analysis was performed on models spanning an experimentally determined range of material properties. By analyzing each pressure frame and performing a least-squares fit between the pressure frames and the model features we were able to determine an inverse relationship to extract tissue stiffness from tactile frames.
Analysis, Modeling, and Validation for the Thermal Dynamics of a Polymer Electrolyte Membrane Fuel Cell System (2005)

A control-oriented mathematical model of a polymer electrolyte membrane (PEM) fuel cell stack is developed and experimentally verified. The model predicts the bulk fuel cell transient temperature and voltage as a function of the current drawn and the inlet coolant conditions. The model enables thermal control synthesis and optimization and can be used for estimating the system performance. Unlike other existing thermal models, it includes the gas supply system, which is assumed to be capable of controlling perfectly the excess air and hydrogen ratio. The fuel cell voltage is calculated quasi-statically. Measurement data of a 1.25 kW, 24-cell fuel cell stack with an integrated membrane-type humidification section is used to identify the system parameters and to validate the performance of the simulation model. The predicted thermal response is verified during typical variations in load, coolant flow, and coolant temperature. A first-law control volume analysis is performed to separate the relevant from the negligible contributions to the thermal dynamics and to determine the sensitivity of the energy balance to sensor errors and system parameter deviations.
Monolithic integration of epitaxial BaTiO3 on Si and SiGe for ferroelectric devices (2014)

November 9-14, 2014
Asymmetric Synthesis of Bicyclic Nitrocyclopropanes from Primary Nitro Compounds and Stereoselective Formation of Tetrahydro-2H-cyclopenta[b]furans via Ring Expansion/Cyclization Reaction (2016)

Optically active bicyclic nitrocyclopropanes are readily prepared from primary chiral nitro compounds, prepared by the conjugate addition of propionaldehyde to a nitro alkene in the presence of proline-derived organocatalysts. The one-step cyclopropanation took place smoothly in a highly stereoselective manner regardless of the stereogenic center adjacent to the allylic unit. Although the allylation reaction catalyzed by BF3·OEt2 provides a mixture of two possible diastereomers, subsequent oxidation of the alcoholic carbon after the formation of nitrocyclopropanes gave diastereomerically pure single products. As a result, separation of the diastereomers during the reaction sequence is unnecessary. Baeyer-Villiger oxidation of the bicyclic nitrocyclopropane ketones followed by enolization resulted in stereoselective formation of a novel cyclopenta[b]furan ring in good yield via ring expansion followed by transannular nucleophilic cyclization.
Generation of a Tryptophan Radical in High Quantum Yield from a Novel Amino Acid Analog Using Near-UV/Visible Light (1997)

Escherichia coli ribonucleotide reductase (RNR) catalyzes the conversion of nucleotides to deoxynucleotides. An initial step in this process has been postulated to be a coupled proton and electron transfer between the essential tyrosyl radical (•Y122) on the R2 subunit and a cysteine residue (C439) on the R1 subunit, the site of nucleotide reduction. One of our long-term goals is to generate the cysteinyl radical on R1 in the absence of R2 using a photoreactive peptide that binds to the R2 binding site of R1. Toward this end, the synthesis of an N-hydroxypyridine-2-thione derivative of tryptophan, designed to generate a tryptophan radical with a quantum of near-UV/visible light, is described. Laser flash photolysis (λexc = 355 nm) of this derivative gave rise to a transient absorption spectrum which showed a ground state depletion centered at its absorption maximum near 370 nm and a broad absorption band at 490 nm. The latter band partially decayed with a lifetime of ∼3 μs to leave an underlying band at 510 nm with a much longer lifetime. We have assigned the transient at 490 nm to the 2-pyridylthiyl radical and the transient at 510 nm to the neutral tryptophan radical. The addition of methyl methacrylate, a known thiyl radical quencher, suppressed the transient at 490 nm while the addition of trifluoroacetic acid caused a shift in the tryptophan radical absorbance to 560 nm consistent with protonation to form the corresponding cation radical. Using comparative actinometry, the quantum yields for N−O bond cleavage and tryptophan radical formation were found to be 1.0 ± 0.1. This selective method for generating tryptophan radical, when incorporated into the appropriate peptide, may make this a useful probe for the study of electron transfer between the R1 and R2 subunits of RNR and may be generally applicable to other systems.
Characterization of the p22 Subunit of Dynactin Reveals the Localization of Cytoplasmic Dynein and Dynactin to the Midbody of Dividing Cells (1998)

Dynactin, a multisubunit complex that binds to the microtubule motor cytoplasmic dynein, may provide a link between dynein and its cargo. Many subunits of dynactin have been characterized, elucidating the multifunctional nature of this complex. Using a dynein affinity column, p22, the smallest dynactin subunit, was isolated and microsequenced. The peptide sequences were used to clone a full-length human cDNA. Database searches with the predicted amino acid sequence of p22 indicate that this polypeptide is novel. We have characterized p22 as an integral component of dynactin by biochemical and immunocytochemical methods. Affinity chromatography experiments indicate that p22 binds directly to the p150(Glued) subunit of dynactin. Immunocytochemistry with antibodies to p22 demonstrates that this polypeptide localizes to punctate cytoplasmic structures and to the centrosome during interphase, and to kinetochores and to spindle poles throughout mitosis. Antibodies to p22, as well as to other dynactin subunits, also revealed a novel localization for dynactin to the cleavage furrow and to the midbodies of dividing cells; cytoplasmic dynein was also localized to these structures. We therefore propose that dynein/dynactin complexes may have a novel function during cytokinesis.