gebhart/patrepeval huggingface dataset:
LikeMiner (2011)

Social media is becoming increasingly ubiquitous and popular on the Internet. Due to the huge popularity of social media websites, such as Facebook, Twitter, YouTube and Flickr, many companies or public figures are now active in maintaining pages on those websites to interact with online users, attracting a large number of fans/followers by posting interesting objects, e.g., (product) photos/videos and text messages. 'Like' has now become a very popular social function by allowing users to express their like of certain objects. It provides an accurate way of estimating user interests and an effective way of sharing/promoting information in social media. In this demo, we propose a system called LikeMiner to mine the power of 'like' in social media networks. We introduce a heterogeneous network model for social media with 'likes', and propose 'like' mining algorithms to estimate representativeness and influence of objects. The implemented prototype system demonstrates the effectiveness of the proposed approach using the large scale Facebook data.
Knobby surfaced, mesoporous, single-phase GIS-NaP1 zeolite microsphere synthesis and characterization for H2 gas adsorption (2012)

Single-phase GIS-NaP1 zeolite particles were hydrothermally synthesized from inorganic precursor solutions. The as-synthesized GIS-NaP1 zeolite particles have spherical morphology similar to Myrica rubra fruit. These knobby surfaced GIS-NaP1 zeolite spheres of size 0.8 to 1.8 μm were composed of crystalline nanoparticles with a crystallite size of around 27.4 nm. The diffraction, spectroscopic and scanning analysis results evidently show high phase-purity of as-synthesized GIS-NaP1 zeolite particles of uniform size, shape and morphology. Textural characterization of as-synthesized GIS-NaP1 zeolite predicts the mesoporous character. The adsorption performances of H2 and CO2 on phase-pure GIS-NaP1 zeolite were investigated at 303 K and pressure ranging from 0 to 1 bar. Magnificently, as-synthesized GIS-NaP1 zeolite shows good adsorption potential for H2 (2.29 mmol g−1) compared to CO2 (0.03 mmol g−1). The high adsorption selectivity (76.33) to H2 over CO2 may be due to the small zeolitic pore diameter and high Si/Al ratio.
Impact of Global Transcriptional Regulation by ArcA, ArcB, Cra, Crp, Cya, Fnr, and Mlc on Glucose Catabolism in <i>Escherichia coli</i> (2005)

Even though transcriptional regulation plays a key role in establishing the metabolic network, the extent to which it actually controls the in vivo distribution of metabolic fluxes through different pathways is essentially unknown. Based on metabolism-wide quantification of intracellular fluxes, we systematically elucidated the relevance of global transcriptional regulation by ArcA, ArcB, Cra, Crp, Cya, Fnr, and Mlc for aerobic glucose catabolism in batch cultures of Escherichia coli. Knockouts of ArcB, Cra, Fnr, and Mlc were phenotypically silent, while deletion of the catabolite repression regulators Crp and Cya resulted in a pronounced slow-growth phenotype but had only a nonspecific effect on the actual flux distribution. Knockout of ArcA-dependent redox regulation, however, increased the aerobic tricarboxylic acid (TCA) cycle activity by over 60%. Like aerobic conditions, anaerobic derepression of TCA cycle enzymes in an ArcA mutant significantly increased the in vivo TCA flux when nitrate was present as an electron acceptor. The in vivo and in vitro data demonstrate that ArcA-dependent transcriptional regulation directly or indirectly controls TCA cycle flux in both aerobic and anaerobic glucose batch cultures of E. coli. This control goes well beyond the previously known ArcA-dependent regulation of the TCA cycle during microaerobiosis.
Status and trends of wireless Web technologies (2006)

In the last decade the separate technologies of the Internet and mobile computing have started converging with the advent of two major technologies, WAP and i-mode, that emerged and attempted to realize the vision of wireless Internet. This paper reviews the main technological, architectural and business issues related to WAP and imode. It also discusses their main assets and weaknesses as well as their current status and the trends expected to affect their market share and customer basis in the future.
Automatic calibration of a single-projector catadioptric display system (2008)

We describe the calibration of a catadioptric omnidirectional video projection system that adjusts its projection to the geometry of any scene by means of a rotating camera. Correction of geometric distortions requires 3D reconstruction of the scene. A camera is used to detect projected point features and calibration is performed in three successive steps: precalibration of camera assuming pure rotation, precalibration of catadioptric projector under central approximation and calibration of the global system, by minimizing the squared distance between the reflected and perceived rays, and by relaxing previous constraints, to refine values of extrinsic parameters. Simulation is used to validate estimated values of parameters and distance between the 3D reconstruction of the projection room and its expected geometry. Influence of noise in detected point coordinates is studied and preliminary results for the reconstruction and projection in real conditions are reported.
<i>In situ</i> determination of InGaAs and GaAsN composition in multiquantum-well structures (2007)

Metal-organic vapor phase epitaxial growth of InGaAs/GaAs and GaAsN/GaAs multiquantum-well (MQW) structures was monitored by in situ reflectometry at 635 nm using a normal incidence reflectance setup. The reflectance signal is found to change significantly during both quantum-well (QW) and barrier growth regions. A matrix method is used to calculate the theoretical reflectance curve and comparing the theoretical curves to the measured ones the complex refractive index of the ternary alloys are derived. Consequently, when the behavior of the complex refractive indices of InGaAs and GaAsN is known as a function of composition, the composition of all the QWs in the MQW strucure can be determined in situ.
[Dissolution velocity of different calcium preparations used in the clinical field]. (1996)

The dissolution velocity of different calcium carbonate preparations varies greatly and, in conditions of achlorhydria, it is negligible. Calcium lactogluconate and citrate dissolution velocities are independent of the solution's pH.
Multiple Feature Extraction of Electroencephalograph Signal for Motor Imagery Classification through Bispectral Analysis (2016)

Electroencephalograph (EEG) signals associated with motor imagery (MI) are highly non-Gaussian, non-stationary and have non- linear characteristics. Bispectral analysis is an advanced signal processing technique that quantifies quadratic non-linearities (phase-coupling) among the components of a signal and holds promise for characterizing MI-related EEG. Studies have been reported on the applicability of bispectrum for MI classification; often with different choice of high order spectra features. Question remains as to which of the different features of non-linear interactions over frequency components are best suited for MI classification. In this paper, an analysis based on bispectrum is reported to extract multiple high order spectra features of EEG for MI classification. MI signals from C3 and C4 channels for two tasks are used in the analysis. Based on bispectrum analysis, four high order spectra features are extracted. The classification results indicate that the extracted features could differentiate the two MI tasks with an accuracy of 90±4.71%.
Measurement of Heat Capacity at High Temperatures by Laser Flash Method Heat Capacity of Alumina (1970)

Several problems encountered in the measurement of heat capacity at high temperatures by the laser flash method are discussed with the view to improving the accuracy of the measurements. The samples were disks of sintered alumina. The heat capacity measurement was carried out at temperatures ranging from 25° to 700°C. The energy of the laser beam was determined with the use of a silicon photoelectric cell and a standard sample of pure iron. The experimental results are compared with the NBS standard data for alumina. Agreement is seen within experimental error, estimated to be ± 1.5%.
Design of high frequency inverter power supply based on series resonance (2013)

The series inverter must comply with the principle of first off,that is to say,the dead time exist between the upper and lower bridge arm.This paper based on the current analysis of full bridge inverter,to design the best dead time as the goal,ultimately through calculating the switching devices work on the zero voltage switching(ZVS) dead time condition.The design of the control circuit based on CD4046 and SG3525 as the core,calculation of the resonant network parameters are given.
Horseshoe crab acetyl group-recognizing lectins involved in innate immunity are structurally related to fibrinogen (1999)

We have characterized and cloned newly isolated lectins from hemolymph plasma of the horseshoe crab Tachypleus tridentatus, which we named tachylectins 5A and 5B (TLs-5). TLs-5 agglutinated all types of human erythrocytes and Gram-positive and Gram-negative bacteria. TLs-5 specifically recognize acetyl group-containing substances including noncarbohydrates; the acetyl group is required and is sufficient for recognition. TLs-5 enhanced the antimicrobial activity of a horseshoe crab-derived big defensin. cDNA sequences of TLs-5 indicated that they consist of a short N-terminal Cys-containing segment and a C-terminal fibrinogen-like domain with the highest sequence identity (51%) to that of mammalian ficolins. TLs-5, however, lack the collagenous domain found in a kind of "bouquet arrangement" of ficolins and collectins. Electron microscopy revealed that TLs-5 form two- to four-bladed propeller structures. The horseshoe crab is equipped with a unique functional homologue of vertebrate fibrinogen, coagulogen, as the target protein of the clotting cascade. Our observations clearly show that the horseshoe crab has fibrinogen-related molecules in hemolymph plasma and that they function as nonself-recognizing lectins. An ancestor of fibrinogen may have functioned as a nonself-recognizing protein.
Two Separate One-Electron Steps in the Reductive Activation of the A Cluster in Subunit β of the ACDS Complex in <i>Methanosarcina thermophila</i> (2008)

Acetyl-CoA decarbonylase/synthase (ACDS) is a multienzyme complex found in methanogens and certain other Archaea that carries out the overall synthesis and cleavage of the acetyl C-C and C-S bonds of acetyl-CoA. The reaction is involved both in the autotrophic fixation of carbon and in the process of methanogenesis from acetate, and takes place at a unique active site metal center known as the A cluster, located on the beta subunit of the ACDS complex and composed of a binuclear Ni-Ni site bridged by a cysteine thiolate to an Fe4S4 center. In this work, a high rate of acetyl-CoA synthesis was achieved with the recombinant ACDS beta subunit by use of methylcobinamide as an appropriate mimic of the physiological base-off corrinoid substrate. The redox dependence of acetyl-CoA synthesis exhibited one-electron Nernst behavior, and the effects of pH on the observed midpoint potential indicated that reductive activation of the A cluster also involves protonation. Initial burst kinetic studies indicated the formation of stoichiometric amounts of an A cluster-acetyl adduct, further supported by direct chromatographic isolation of an active enzyme-acetyl species. Titration experiments indicated that two electrons are required for activation of the enzyme in the process of forming the enzyme-acetyl intermediate. The results also established that the A cluster-acetyl species undergoes reductive elimination of the acetyl group with the simultaneous release of two, low potential electron equivalents. Thus, the one-electron Nernst behavior can be interpreted as the sum of two separate, low potential, one-electron steps. The results tend to exclude reaction mechanisms involving either one- or three-electron reduced forms of the A cluster as immediate precursors to the acetyl species. A scheme involving a [Fe4S4]1+-Ni1+ species is favored over a [Fe4S4]2+-Ni0 form. The role of proton uptake in the possible formation of a Ni2+-hydride intermediate is also discussed. Trapping of electrons during the formation of the A cluster-acetyl species from substrates CO and methylcobinamide was found to be highly favorable, thus presenting a means for extensive activation of the enzyme under otherwise nonpermissive physiological redox potentials.
Characterization of retinol metabolism in cultured human epidermal keratinocytes (1993)

Retinoids present in cultured human epidermal keratinocytes maintained in medium containing 25 nM retinol were identified and quantitated utilizing reverse-phase gradient high performance liquid chromatography. Total cell retinoid mass and composition averaged 12.59 pmol/mg cell protein +/- 1.86, (mean +/- S.D., n = 5) between strains and was constant with culture age. Long chain fatty acid esters of retinol and 3,4-didehydroretinol comprised greater than 95% of total retinoid, each contributing 77 and 23% of total esters, respectively. In mature stratified cultures, less abundant retinoids included unesterified retinol, 1%, and 3,4-didehydroretinol, 0.5%, retinoic acid, 0.5%, and a retinoid not previously reported in mammalian cells, 3,4-didehydroretinoic acid, 0.3%. This absolute and relative retinoid composition was essentially constant with culture age except that 3,4-didehydroretinoic acid was not detected in 3-4-day-old cultures (16-32 cell colonies), suggesting that keratinocyte differentiation may be related to endogenous changes in production of "active" retinoids. Separate pools of retinyl and 3,4-didehydroretinyl esters served as predominant sources of substrate for production of retinoic and 3,4-didehydroretinoic acids, respectively, suggesting that their production may be regulated independently.
Multi-walled carbon nanotubes (MWCNT) as compliant electrodes for dielectric elastomer actuators (2011)

A stacked dielectric elastomer actuator (DEA) consists of multiple layers of elastomeric dielectrics interleaved with compliant electrodes. It is capable of taking a tensile load if only the interleaving compliant electrodes provide a good bonding and enough elasticity. However, the stacked configuration of DEA was found to produce less actuation strain as compared to a single-layer configuration of pre-stretched membrane. It is believed the binder for compliant electrodes has a significant influence on the actuation strain. Yet, there has yet systematic study on the effect of binder. In this paper, we will study the effects of binder, solvent, and surface fictionalization on the compliant electrodes using the conductive filler of Multi-Walled Carbon Nanotube (MWCNT). Two types of binders are used, namely a soft silicone rubber (Mold Max 10T) and a soft silicone gel (Sylgard 527 gel). The present experiments show that the actuators using binders in the compliant electrodes produce a much lower areal strain as compared to the ones without binders in them. It is found that introducing a binder in the electrodes decreases the conductivity. The MWCNT compliant electrode with binder remains conductive (<1TΩ) up to a strain of 300%, whereas the one without binder remains conductive up to a strain of 800%. Changing the type of binder to a softer and less-viscous one increases the percolation ratio for MWCNT-COOH filler from 5% to 15% but this does not significantly increase the actuation strain. In addition, this study investigates the effect of MWCNT functionalization on the dielectric elastomeric actuation. The compliant electrodes using the MWCNT functionalized with (-COOH) group was also found to have a lower electrical conductivity and areal actuation strain, in comparison to the ones using the pristine MWCNT filler. In addition to binder, solvent for dispersing MWCNT-COOH was found to affect the actuation strain even though the solvent is eventually removed by evaporation from the MWCNT-COOH electrode. The actuators with MWCNT-COOHs electrodes, prepared from the solvent dispersion, produce a low actuation strain even though these electrodes have good conductivity and these solvents do not degrade the physical properties of the dielectric layer. This finding on the solvent effect has yet been clearly understood.
microRNA‐directed cleavage of <i>ATHB15</i> mRNA regulates vascular development in Arabidopsis inflorescence stems (2005)

Class III homeodomain-leucine zipper proteins regulate critical aspects of plant development, including lateral organ polarity, apical and lateral meristem formation, and vascular development. ATHB15, a member of this transcription factor family, is exclusively expressed in vascular tissues. Recently, a microRNA (miRNA) binding sequence has been identified in ATHB15 mRNA, suggesting that a molecular mechanism governed by miRNA binding may direct vascular development through ATHB15. Here, we show that miR166-mediated ATHB15 mRNA cleavage is a principal mechanism for the regulation of vascular development. In a gain-of-function MIR166a mutant, the decreased transcript level of ATHB15 was accompanied by an altered vascular system with expanded xylem tissue and interfascicular region, indicative of accelerated vascular cell differentiation from cambial/procambial cells. A similar phenotype was observed in Arabidopsis plants with reduced ATHB15 expression but reversed in transgenic plants overexpressing an miR166-resistant ATHB15. ATHB15 mRNA cleavage occurred in standard wheat germ extracts and in Arabidopsis and was mediated by miR166 in Nicotiana benthamiana cells. miR166-assisted ATHB15 repression is likely to be a conserved mechanism that regulates vascular development in all vascular plants.
The Pathway of Creatine Catabolism by Pseudomonas ovalis (1956)

SUMMARY: Creatine is oxidized by suspensions of a strain of Pseudomonas ovalis Chester harvested from media containing creatine as main source of carbon and nitrogen. A possible pathway of degradation of at least part of the creatine is: (a) hydrolysis of creatine to sarcosine and urea, (b) oxidation of sarcosine to glycine and formaldehyde, (c) oxidation of the latter products to CO2 and NH3 with considerable concurrent oxidative assimilation. Soluble enzyme preparations catalysing stage (a) were obtained by aqueous extraction of either acetone-dried or toluene-treated organisms. The enzyme for stage (b) was present in the insoluble residue from the latter organisms.
Fundamentals and Applications of Electrospray Ionization Mass Spectrometry for Petroleum Characterization (2004)

We are reporting a study of the fundamental and application aspects of positive-ion electrospray ionization (ESI+) for petroleum characterization. In the positive-ion mode, basic nitrogen molecules (typically pyridinic molecules) form predominantly protonated molecule ions. Most other molecular types, such as paraffins, naphthenes, aromatics, and thiophenoaromatics, are largely not ionized by ESI. Metalloporphyrins and neutral nitrogens show little response. The effects of acid and analyte concentrations, and instrumental conditions, were evaluated. Increasing the acid concentration promotes the ionization of the low-molecular-weight bases but has minimal impact on high-molecular-weight species. Analyses of low- and high-molecular-weight petroleum fractions and their mixtures showed minimal mass discrimination. Cone and extraction voltages have a significant impact on ESI responses, particularly on aliphatic amines. Linear dynamic range exists at lower analyte concentrations (<10-5 M).
Cell Envelope of<i>Candida Albicans</i> (1987)

In this review, the cell envelope of the human pathogenic yeast Candida albicans includes the plasma membrane and the mannoproteins, enzymes, beta-glucans, and chitin of the wall. The organization of the wall is complex and ultrastructural studies show distinct "layers". Mannoprotein is distributed throughout the wall but is concentrated on the exterior surface and adjacent to the plasma membrane. The mannoproteins contain the antigenic determinants of the yeast cells. The major structural components of the wall are beta-1,3- and beta 1,6-glucans, and these two linkages are present in almost equal amounts. Chitin is concentrated at the bud scar, but small amounts are located over the entire wall where it appears to be linked to beta-1,6-glucan. Chemical bonding both within and between wall components confers rigidity on the wall and restricts movement of molecules into and out of the cell. Soluble enzymes are retained within the wall matrix, but a number of enzymes and proteins are excreted. The plasma membrane of C. albicans is similar to that isolated from other fungi and contains the proton pump ATPase and enzymes involved in biosynthesis of the wall such as chitin synthase and beta-1,3-glucan synthase.
Optimization of an Electro-Optic Voltage Transducer using a VHDL-AMS model (2011)

This paper reports on the optimization of an Electro-Optic Voltage Transducer (EOVT) using a VHDL-AMS model. Specifically, two different voltage reconstruction schemes have been assessed: reconstruction using arctangent and using arccosine. Both schemes have been simulated for different applied voltages and phase shift errors between the two electrical signals produced by the EOVT. Despite the high complexity of the device (optical and electronic parts, digital and analogue signal processing), modeling has allowed estimating the performance of the system accurately. This would have been practically impossible through theoretical considerations alone. Results show the arctangent method to outperform arccosine. However, both methods reach the desired accuracy of 0.1% when the phase shift error remains below 6%.
Prevalence of Obesity Among Adults and Youth: United States, 2015-2016. (2017)

Obesity is associated with serious health risks. Monitoring obesity prevalence is relevant for public health programs that focus on reducing or preventing obesity. Between 2003–2004 and 2013–2014, there were no significant changes in childhood obesity prevalence, but adults showed an increasing trend. This report provides the most recent national estimates from 2015–2016 on obesity prevalence by sex, age, and race and Hispanic origin, and overall estimates from 1999–2000 through 2015–2016.
Nuclear Reactor Simulator (1949)

The simulator is an electrical analogue computer. The idea of solving differential equations by use of electrical models has become a widely accepted technique. If due consideration has been given to keeping the model similar to the physical phenomena described by the differential equations involved. The simulator developed at ORNL, through the combined efforts of E. J. Wade and J. W. Simpson of the Power Pile Division, meets this requirement. It consists of a network of electrical conducting elements and suitable sources of current and current sinks. The design of this network is such that when the proper electrical resistance values are assembled and the current sources and sinks are properly adjusted, the steady state voltage distribution on the network is the same as the steady state flux distribution in the reactor and the current sources are a measure of the critical mass of the reactor.
Magnetic material R,Fe,Mo,(Co) with ThMn12 structure (1988)

Preparation and magnetic properties of ThMn12-type phases R,Fe,Mo,(Co), R=Y, Ce, Nd, Sm, Gd, Dy, Er are described. The ternary material, without Co, exhibits saturation magnetization up to 1 T and Curie temperature up to 215 °C, the quaternary material, with Co, up to 1.2 T, and 295 °C, respectively.