gebhart/patrepeval huggingface dataset:
Determination of the dynamic shear modulus and loss factor of rubber (1980)

We have recently developed a new resonance theory for the scattering of compressional waves by fluid-filled spherical cavities in viscoelastic materials, and have applied it to the study of the resonance frequencies and widths of peaks in the (monopole) f0pp scattering amplitude. Using this theory, which is the viscoelastodynamical counterpart of the Breit-Wigner formalism of nuclear scattering theory, we find that (i) the relative half-width of the peaks depends linearly on the resonance frequency, (ii) the shear-absorption parameter of the viscoelastic material containing the cavity can be determined from the slope of a straight line fit to the data. This determination is possible precisely because our theory realistically accounts for absorption in the material, and thus its predictions compare favorably with experimentally measured data. Finally, the theory gives a self-consistent way to verify the weak absorption assumption inherent in the prediction. [H. Überall is also at the Physics Department, Catholic University, Washington, DC 20064, additionally supported by Code 421 of ONR.]
The Performance of Vanadium Oxide Nanorolls as Cathode Material in a Rechargeable Lithium Battery (2001)

Vanadium oxide nanorolls have for the first time been successfully used as cathode material in a rechargeable lithium battery. The rolls consist of vanadium oxide sheets arranged in a scroll-like manner. The layers are separated by structure directing templates (e.g., primary amines) which can be readily exchanged by various metal cations without destroying the tubular structure. X-ray diffraction (XRD) and transmission electron microscopy were used to investigate the morphology and structure of the rolls. Performance as an electrode material was tested by galvanostatic cycling in the potential range 1.8-3.5 V (vs. The capacities were found to be closely dependent on the type of lithium salt used in the electrolyte. Three salts were tested, and The imide salt, proved to give the best result with initial capacities The material cycled reversibly for at least 100 cycles. XRD results indicate that the tubular structure is preserved, even after prolonged cycling. © 2001 The Electrochemical Society. All rights reserved.
Variable-length DQPSK optical packet switching and buffering using asynchronous buffer manager (2010)

We demonstrated variable-length optical packet switching and buffering by an asynchronous FPGA-based buffer manager. The optical packets with different payload length and DQPSK format could be optical-label switched and buffered through fiber delay lines with integral multiple unit length.
Antigen-specific tolerization approaches in multiple sclerosis (2013)

Despite difficulties in translation of antigen-specific therapies in MS, novel approaches have the potential to effectively induce immune tolerance and ameliorate the disease. To improve efficacy of treatments, future trials should include patients in the early phases of the disease, when the autoimmune response is predominant and immune reactivity still focused. The target antigens are not fully defined yet, and robust immunomonitoring assays should developed to provide mechanistic proof of concept in parallel to showing efficacy with respect to inhibiting inflammatory disease activity in the central nervous system (CNS).
<i>Lactococcus lactis</i> expressing HIV antigens on a Group A <i>Streptococcus</i> (GAS) pilus serves as potential dual mucosal vaccine against HIV and GAS (2016)

Abstract Due to the majority of HIV/SIV transmissions occurring via the mucosal route, a mucosal vaccine that generates immune responses along the genitorectal tract may provide the tools needed to combat HIV/SIV in its earliest stages of infection. We recently demonstrated that an orally delivered mucosal vaccine based around the probiotic bacterium Lactococcus lactis expressing HIV/SIV antigens fused to a cell wall anchored Group A Streptococcus (GAS) pilus induces a strong systemic and mucosal immunity in mice. To test the mechanisms behind immunogenicity, we gavaged mice and examined the activation level of various dendritic cells in the intestinal Peyer’s patches and found increased activation of CD11b+CD8− DC compared to wild-type L. lactis, indicating some inherent adjuvant activity of the GAS pilus. As there is evidence that GAS pilus specific antibodies may aid in the protection from GAS infection, we evaluated the ability of our L. lactis vectors to generate these pilus-targeting antibodies. We observed a strong induction of GAS-pilus specific antibodies in both mice and rhesus macaques orally immunized with our L. lactis vectors. We were unable to detect antibody responses generated against the backbone L. lactis bacterium, underlining the immunodominance of the GAS pilus in these vectors. These data suggest that these constructs may serve a dual role in generating protective immune responses against HIV and GAS infections.
Human papillomaviruses: their clinical significance in the management of cervical carcinoma. (1995)

Studies have shown a strong association between certain human papillomaviruses and the development of cervical carcinoma and its precursor lesions. The oncogenic potential of papillomaviruses has been clearly demonstrated in both laboratory animals and cultured cells. Recent advances in our understanding of viral pathogenesis have provided insights into the natural history of papillomavirus infection and subsequent development of neoplasia. A more thorough understanding of the molecular mechanisms responsible for viral oncogenesis will facilitate the development of novel preventive and therapeutic strategies to prevent and treat papillomavirus-associated cervical neoplasias. Strategies under current investigation are focusing on the induction of effective humoral and cell-mediated immunity, the expression of HPV gene products, and cofactors that interact with HPV gene products to affect cell transformation. As a result of these investigative efforts, prophylactic HPV capsid vaccines and other gene therapies may soon become clinically available.
Functionality and Digestibility of a Highly Phosphorylated Soybean Protein (1984)

Journal Article Functionality and Digestibility of a Highly Phosphorylated Soybean Protein Get access Motohiko Hirotsuka, Motohiko Hirotsuka Research Institute for Food Science, Kyoto University, Uji, Kyoto 611, Japan From Fuji Oil Company, Osaka, Japan. Search for other works by this author on: Oxford Academic Google Scholar Hitoshi Taniguchi, Hitoshi Taniguchi Research Institute for Food Science, Kyoto University, Uji, Kyoto 611, Japan From Fuji Oil Company, Osaka, Japan. Search for other works by this author on: Oxford Academic Google Scholar Hiroshi Narita, Hiroshi Narita Research Institute for Food Science, Kyoto University, Uji, Kyoto 611, Japan Search for other works by this author on: Oxford Academic Google Scholar Makoto Kito Makoto Kito Research Institute for Food Science, Kyoto University, Uji, Kyoto 611, Japan Search for other works by this author on: Oxford Academic Google Scholar Agricultural and Biological Chemistry, Volume 48, Issue 1, 1 January 1984, Pages 93–100, https://doi.org/10.1080/00021369.1984.10866103 Published: 01 January 1984 Article history Received: 25 May 1983 Published: 01 January 1984
Online Combustor Stability Margin Assessment Using Dynamic Pressure Data (2004)

This paper describes a strategy for determining a combustor’s dynamic stability margin. Currently, when turbines are being commissioned or simply going through day to day operation, the operator has no idea how the dynamic stability of the system is affected by changes to fuel splits/operating conditions unless, of course, pressure oscillations are actually present. We have developed a methodology for ascertaining stability margin from passive monitoring of the acoustic pressure. This method consists of signal processing and analysis that determines a real-time measure of combustor damping. When the calculated damping is positive, the combustor is stable. When the damping goes to zero, the combustor approaches its stability boundary. Changes in the stability margin of each of the combustor’s stable modes due to tuning, aging or environmental changes can then be monitored through online analysis of the pressure signal. This paper outlines the basic approach used to quantify acoustic damping and demonstrates the technique on combustor test data.
Cloning, Expression, and Characterization of <scp>l</scp>-Asparaginase from a Newly Isolated Bacillus subtilis B11–06 (2013)

This study focused on the cloning, overexpression, and characterization of the gene encoding L-asparaginase (ansZ) from a nonpathogenic strain of Bacillus subtilis B11-06. The recombinant enzyme showed high thermostability and low affinity to L-glutamine. The ansZ gene, encoding a putative L-asparaginase II, was amplified by PCR and expressed in B. subtilis 168 using the shuttle vector pMA5. The activity of the recombinant enzyme was 9.98 U/mL, which was significantly higher than that of B. subtilis B11-06. The recombinant enzyme was purified by a two-step procedure including ammonium sulfate fractionation and hydrophobic interaction chromatography. The optimum pH and temperature of the recombinant enzyme were 7.5 and 40 °C, respectively. The enzyme was quite stable at a pH range of 6.0-9.0 and exhibited about 14.7 and 9.0% retention of activity following 2 h incubation at 50 or 60 °C, respectively. The Km for L-asparagine was 0.43 mM, and the Vmax was 77.51 μM/min. Results of this study also revealed the potential industrial application of this enzyme in reducing acrylamide formation during the potato frying process.
Growth of .BETA.-Ga2O3 Single Crystal as a Transparent Conductive Substrate (2005)

Large size single crystals of β-Ga2O3 with 1 inch in diameter have been grown by the floating zone technique. Wafers have been cut and fine polished in the (100), (010) and (001) planes. These were highly transparent in the visible and near UV, as well as electrically conductive, indicating the potential use of β-Ga2O3 as a substrate for optoelectric devices operating in the visible/near UV and with vertical current flow. Epitaxial growth of nitride compounds by the metalorganic vapor phase epitaxy (MOVPE) technique is demonstrated on β-Ga2O3 single crystal substrates. High-quality (0001) GaN epi-layers with a narrow bandedge luminescence are obtained using a low temperature conductive buffer layer. InGaN multi-quantum well (MQW) structures were also successfully grown. The first blue light-emitting diode (LED) on β-Ga2O3 with vertical current injection is demonstrated.
Differentiation of Healthy Brain Tissue and Tumors Using Surface-Enhanced Raman Scattering (2009)

Surface-enhanced Raman scattering (SERS) is a powerful technique for characterization of biological samples. SERS spectra from healthy brain tissue and tumors are obtained by sudden freezing of tissue in liquid nitrogen and crashing and mixing it with a concentrated silver colloidal suspension. The acquired spectra from tissues show significant spectral differences that can be used to identify whether it is from a healthy region or tumor. The most significant change on SERS spectra from the healthy/peripheral brain tissue to tumor is the increase of the ratio of the peaks at around 723 to 655 cm(-1). In addition, the spectral changes indicate that the protein content in tumors increases compared to the peripheral/healthy tissue as observed with tumor invasion. The preliminary results show that SERS spectra can be used for a quick diagnosis due to the simplicity of the sample preparation and the speed of the spectral acquisition.
CRISPR Typing and Subtyping for Improved Laboratory Surveillance of Salmonella Infections (2012)

Laboratory surveillance systems for salmonellosis should ideally be based on the rapid serotyping and subtyping of isolates. However, current typing methods are limited in both speed and precision. Using 783 strains and isolates belonging to 130 serotypes, we show here that a new family of DNA repeats named CRISPR (clustered regularly interspaced short palindromic repeats) is highly polymorphic in Salmonella. We found that CRISPR polymorphism was strongly correlated with both serotype and multilocus sequence type. Furthermore, spacer microevolution discriminated between subtypes within prevalent serotypes, making it possible to carry out typing and subtyping in a single step. We developed a high-throughput subtyping assay for the most prevalent serotype, Typhimurium. An open web-accessible database was set up, providing a serotype/spacer dictionary and an international tool for strain tracking based on this innovative, powerful typing and subtyping tool.
Oxygenation of a new bis-fenced porphyrinato iron without amide groups: 5,10,15,20-tetrakis(2,6-bispivaloyloxyphenyl)porphyrinatoiron(II) (1990)

A new porphyrinatoiron complex, 5,10,15,20-tetrakis(2,6-bispivaloyloxyphenyl)porphyrinatoriron(II), has been synthesized; axial-base ligation was sterically depressed by the four ester groups on each side of the porphyrin plane and a stable dioxygen adduct formed reversibly at 25 °C in toluene.
High-speed multispectral confocal biomedical imaging (2014)

A new approach for generating high-speed multispectral confocal images has been developed. The central concept is that spectra can be acquired for each pixel in a confocal spatial scan by using a fast spectrometer based on optical fiber delay lines. This approach merges fast spectroscopy with standard spatial scanning to create datacubes in real time. The spectrometer is based on a serial array of reflecting spectral elements, delay lines between these elements, and a single element detector. The spatial, spectral, and temporal resolution of the instrument is described and illustrated by multispectral images of laser-induced autofluorescence in biological tissues.
Sputtered Pt/Co multilayers for magneto-optical recording (1990)

By sputtering Pt/Co multilayers with either Kr or Xe instead of Ar, a large magnetic coercivity of approximately 1000 Oe suitable for magnetooptical recording was achieved. Sputtering with a larger-mass gas reduced both the flux and the energy of backreflected gas neutrals, which can mix Pt and Co layers and compromise magnetic properties. Multilayer-related Pt-Co alloys with perpendicular magnetic anisotropy and coercivities of 1-3.5 kOe were made by sputtering them at high Ar pressures (20-50 mTorr).< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Optimization of 4D vessel‐selective arterial spin labeling angiography using balanced steady‐state free precession and vessel‐encoding (2016)

Vessel-selective dynamic angiograms provide a wealth of useful information about the anatomical and functional status of arteries, including information about collateral flow and blood supply to lesions. Conventional x-ray techniques are invasive and carry some risks to the patient, so non-invasive alternatives are desirable. Previously, non-contrast dynamic MRI angiograms based on arterial spin labeling (ASL) have been demonstrated using both spoiled gradient echo (SPGR) and balanced steady-state free precession (bSSFP) readout modules, but no direct comparison has been made, and bSSFP optimization over a long readout period has not been fully explored. In this study bSSFP and SPGR are theoretically and experimentally compared for dynamic ASL angiography. Unlike SPGR, bSSFP was found to have a very low ASL signal attenuation rate, even when a relatively large flip angle and short repetition time were used, leading to a threefold improvement in the measured signal-to-noise ratio (SNR) efficiency compared with SPGR. For vessel-selective applications, SNR efficiency can be further improved over single-artery labeling methods by using a vessel-encoded pseudo-continuous ASL (VEPCASL) approach. The combination of a VEPCASL preparation with a time-resolved bSSFP readout allowed the generation of four-dimensional (4D; time-resolved three-dimensional, 3D) vessel-selective cerebral angiograms in healthy volunteers with 59 ms temporal resolution. Good quality 4D angiograms were obtained in all subjects, providing comparable structural information to 3D time-of-flight images, as well as dynamic information and vessel selectivity, which was shown to be high. A rapid 1.5 min dynamic two-dimensional version of the sequence yielded similar image features and would be suitable for a busy clinical protocol. Preliminary experiments with bSSFP that included the extracranial vessels showed signal loss in regions of poor magnetic field homogeneity. However, for intracranial vessel-selective angiography, the proposed bSSFP VEPCASL sequence is highly SNR efficient and could provide useful information in a range of cerebrovascular diseases. © 2016 The Authors. NMR in Biomedicine published by John Wiley & Sons Ltd.
Cross-Axis Synchronous Flow-Through Coil Planet Centrifuge (Type XLL) III. Performance of Multilayer Coils in Preparative Separation of Dipeptides (1992)

Abstract Performance of the type-XLL cross-axis coil planet centrifuge with three different size of the multilayer coils was evaluated by separating dipeptide samples on a polar biphasic solvent composed of n-butanol/acetic acid/water (4:1:5, v/v/v). Best results were obtained from the large helical diameter coils with β values of 1.00-1.20 [1]| by eluting with the upper nonaqueous phase at 120 ml/h. The four dipeptides. L.-tryptophyl-L-tyrosine, L-leucyl-L-tyrosine, L-valyl-L-tyrosine and L-tyrosylglycine were completely rcsolved in 9 hours with high peak resolution (Rs > 1.5).
Combined successive cancellation and joint demodulation for the suppression of adjacent channel interference (2003)

The capacity and signal quality of wireless communication systems can be improved dramatically by enhancing the receiver performance in the presence of adjacent channel interference (ACI). The sequence error rate is minimized through joint demodulation of all signals, but with high implementation complexity. Complexity can be greatly reduced through the use of successive cancellation, in which signals are detected and subtracted in descending order of signal power. However, successive cancellation performs poorly when signals have similar power levels. In this paper, an improved successive cancellation receiver for adjacent channel signals is proposed. The conventional detector is replaced with a simple form of joint demodulation. As a result, the receiver combines the benefits of joint demodulation, which works well when signals have similar power levels, with the benefits of successive cancellation, which works well when signals have dissimilar power levels. Performance results for the Global System for Mobile (GSM) communication digital cellular system show an order of magnitude reduction in bit-error-rate when adjacent channel signals are closely spaced and have comparable power levels.
Chymopapain. Chromatographic purification and immunological characterization (1984)

Chymopapain (EC 3.4.22.6) was purified from commercially available spray-dried latex of papaya (Carica papaya) fruit by (NH4)2SO4 fractionation and fast protein chromatography on the Mono S cation-exchange column. Multiple forms of chymopapain separated chromatographically were shown to be immunologically identical. A major form was isolated and found to be homogeneous by several criteria, and fully active, and its N-terminal amino acid was identified as tyrosine. Latex from fresh unripe papaya fruit contained predominantly one form of chymopapain, and it is concluded that chymopapain is a single enzyme distinct from the other cysteine proteinases of C. papaya latex.
Polysilahydrocarbon synthetic fluids. 2. Synthesis and characterization of tetrasilahydrocarbons (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolysilahydrocarbon synthetic fluids. 2. Synthesis and characterization of tetrasilahydrocarbonsKazimiera J. L. Paciorek, Joseph G. Shih, Reinhold H. Kratzer, Bruce B. Randolph, and Carl E. Snyder Jr.Cite this: Ind. Eng. Chem. Res. 1991, 30, 9, 2191–2194Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://doi.org/10.1021/ie00057a021RIGHTS & PERMISSIONSArticle Views52Altmetric-Citations11LEARN 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 (524 KB) Get e-Alerts Get e-Alerts
Partial-sum queries in OLAP data cubes using covering codes (1998)

A partial-sum query obtains the summation over a set of specified cells of a data cube. We establish a connection between the covering problem in the theory of error-correcting codes and the partial-sum problem and use this connection to devise algorithms for the partial-sum problem with efficient space-time trade-offs. For example, using our algorithms, with 44 percent additional storage, the query response time can be improved by about 12 percent; by roughly doubling the storage requirement, the query response time can be improved by about 34 percent.
ChemInform Abstract: New Substituted 4‐Azatricyclo(4.3.1.13,8)undecane Derivatives. (1987)

Abstract Adamantanone oxime (I) rearranges to form the lactam (II).
High-resolution fluorescence microscopy using three-dimensional structured illumination (2009)

We developed a high-resolution microscope based on three-dimensional structured illumination generated with two spatial light modulators. This setup enables both lateral resolution improvement by a factor two and axial localization of point like objects with nanometric precision.
A Promising Future for Optical Coherence Tomography Angiography (2015)

This Viewpoint reports on optical coherence tomography angiography and how its use could greatly enrich our understanding of the ischemic processes affecting different layers of the retinal vasculature.
Zirconium vanadium chromium alloy (1980)

A ternary intermetallic compound having the formula Zr(V/sub 1-x/Cr/sub x/)/sub 2/ where x is in the range of 0.01 to 0.90 is capable of reversibly sorbing hydrogen at temperatures ranging from room temperature to 200/sup 0/C, at pressures down to 10/sup -6/ torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.
Injectorless quantum-cascade lasers (2001)

An “injectorless” quantum-cascade (QC) laser is presented. The requirement of using injector regions to transport electrons from the lower laser level and other low-lying energy levels of one active region to the upper laser level of the next electron-downstream active region was eliminated by using an appropriately designed double-quantum-well “chirped” superlattice active region. The major advantage of the “injectorless” QC laser is the close packing of the active regions and the concomitant large optical confinement factor. Using a cascade of 75 consecutive active regions, designed for emission at λ=11.5 μm, a pulsed peak output power of 270 mW is achieved at 7 K and approximately 10 mW at the maximum operating temperature of 195 K.