gebhart/patrepeval huggingface dataset:
Superhard semiconducting<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mtext>C</mml:mtext><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mtext>N</mml:mtext><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>compounds predicted via first-principles calculations (2008)

In this paper we introduce the two compounds $\ensuremath{\alpha}{\text{-C}}_{3}{\text{N}}_{2}$ and $\ensuremath{\beta}{\text{-C}}_{3}{\text{N}}_{2}$ with cubic symmetry, which are derived from a simple cubic carbon $({\text{C}}_{20})$ reported recently. Our first-principles calculations show that both the solids are highly incompressible with high bulk modulus (380 and 343 GPa), large shear modulus $G$ (365 and 368 GPa), great elastic constant ${C}_{44}$ (327 and 329 GPa), and high Vickers hardness ${H}_{V}$ (both are 86 GPa), respectively. Accordingly we come to a conclusion that both the ${\text{C}}_{3}{\text{N}}_{2}$ phases are potentially superhard semiconductor materials. From the electronic partial density of states, it is found that the superhard character of the two phases is mainly attributed to the strong covalent bond between C and N. The $\ensuremath{\alpha}{\text{-C}}_{3}{\text{N}}_{2}$ is dynamically stable at pressures below 1.2 GPa but unstable above 1.2 GPa because an optical branch softens to zero at the $\ensuremath{\Gamma}$ point. The $\ensuremath{\alpha}{\text{-C}}_{3}{\text{N}}_{2}$ will transform into $\ensuremath{\beta}{\text{-C}}_{3}{\text{N}}_{2}$ at about 1.2 GPa which is energetically more stable. Both phonon-dispersion and elastic constant calculations at zero and high pressures show that this $\ensuremath{\beta}{\text{-C}}_{3}{\text{N}}_{2}$ remains mechanically and dynamically stable in a pressure range from 0 to at least 20 GPa.
Practical calibrations for a real-time digital omnidirectional camera (2001)

Newly available high quality inexpensive digital 1394 cameras enable cheap and easy construction of omnidirectional cameras. We address several important issues for creating real-time panoramas, including user-assisted focusing, devignetting, and computer controlled brightness, contrast, and white balance. We demonstrate remarkable improvements in panoramic image quality using methods requiring very little CPU usage. 1.
Monitor Training 2009 (2009)

The recent monitor training roadshow was another great learning opportunity for monitors and ASA executives.
Nucleotide sequence of cytochrome P-450 cholesterol side-chain cleavage cDNA isolated from porcine testis (1989)

Journal Article Nucleotide sequence of cytochrome P-450 cholesterol side-chain cleavage cDNA isolated from porcine testis Get access G.W. Mulheron, G.W. Mulheron Search for other works by this author on: Oxford Academic PubMed Google Scholar R.T. Stone, R.T. Stone Search for other works by this author on: Oxford Academic PubMed Google Scholar W.L. Miller, W.L. Miller 1Department of Pediatrics and Metabolic Research, University of CaliforniaSan Francisco, CA, USA Search for other works by this author on: Oxford Academic PubMed Google Scholar T. Wise T. Wise Search for other works by this author on: Oxford Academic PubMed Google Scholar Nucleic Acids Research, Volume 17, Issue 4, 25 February 1989, Page 1773, https://doi.org/10.1093/nar/17.4.1773 Published: 25 February 1989 Article history Received: 10 January 1989 Published: 25 February 1989
Development of a portable field rainfall simulator for use in hillside vineyard runoff and erosion studies (2000)

An inexpensive, mobile field rainfall simulator and runoff plot frame were developed for use on hillside vineyards. The simulator framework and components were lightweight, readily available and easily manageable such that they can be handled by one person during transport, set–up and operation. The vineyard rainfall simulator was simpler than many of the machines in recent use for similar studies, yet offered equal or improved performance for small-plot studies. The system developed consistent sized 2·58 mm raindrops at intensities ranging from 20 to 90 mm/h. The average distribution uniformity coefficient at an intensity of 60 mm/h was 91·7%, with a deviation of only 2·2%. This coefficient was similar to the range reported for a more complex rotating disk simulator, and was notably greater than that obtained for other similar devices. The system water capacity of 40 l allowed for 1-h storm durations at 60 mm/h, usually sufficient time for commencement of erosion and runoff. The runoff plot frame was designed to be quickly installed, and to discourage sediment deposition in the routing of runoff to collect containers. Copyright © 2000 John Wiley & Sons, Ltd.
Sweet-taste receptors, low-energy sweeteners, glucose absorption and insulin release (2010)

The present review explores the interactions between sweeteners and enteroendocrine cells, and consequences for glucose absorption and insulin release. A combination of in vitro, in situ, molecular biology and clinical studies has formed the basis of our knowledge about the taste receptor proteins in the glucose-sensing enteroendocrine cells and the secretion of incretins by these cells. Low-energy (intense) sweeteners have been used as tools to define the role of intestinal sweet-taste receptors in glucose absorption. Recent studies using animal and human cell lines and knockout mice have shown that low-energy sweeteners can stimulate intestinal enteroendocrine cells to release glucagon-like peptide-1 and glucose-dependent insulinotropic peptide. These studies have given rise to major speculations that the ingestion of food and beverages containing low-energy sweeteners may act via these intestinal mechanisms to increase obesity and the metabolic syndrome due to a loss of equilibrium between taste receptor activation, nutrient assimilation and appetite. However, data from numerous publications on the effects of low-energy sweeteners on appetite, insulin and glucose levels, food intake and body weight have shown that there is no consistent evidence that low-energy sweeteners increase appetite or subsequent food intake, cause insulin release or affect blood pressure in normal subjects. Thus, the data from extensive in vivo studies in human subjects show that low-energy sweeteners do not have any of the adverse effects predicted by in vitro, in situ or knockout studies in animals.
A Sinister Plot or Victim of Politics? (2000)

When the Bush Administration proposed a "violence initiative" 8 years ago, it touched off a battle over racism and psychiatry. In particular, a proposed meeting on the genetics of crime sparked accusations that it was part of a government conspiracy to dope up inner city kids on psychoactive drugs.
Network lifetime maximization in sensor networks with multiple mobile sinks (2011)

In this paper we deal with the network lifetime maximization problem under multiple mobile sink environments, namely, the h-hop-constrained multiple mobile sink problem, which is defined as follows. Given a stationary sensor network with K mobile sinks that traverse and sojourn in a given space of locations in the monitoring area, assume that the total travel distance of each sink is bounded by a given value L and the maximum number of hops from each sensor to a sink is bounded by an integer h ≥ 1, the problem is to find an optimal trajectory for each mobile sink and determine the sojourn time at each sojourn location in the trajectory such that the network lifetime is maximized. We first formulate this problem as a joint optimization problem consisting of finding an optimal trajectory and determining the sojourn time at each chosen location. We then show that the problem is NP-hard. We instead devise a novel three-stage heuristic, which consists of calculating the sojourn time profile at each potential sojourn location, finding a high-quality trajectory for each mobile sink, and determining the actual sojourn time at each sojourn location. We finally conduct extensive experiments by simulations to evaluate the performance of the proposed algorithm in terms of network lifetime. We also investigate the impact of constraint parameters on the network lifetime. The experimental results demonstrate that the performance of the proposed heuristic is highly comparable to the optimal one, and the ratios of network lifetime of the proposed algorithm to the optimal network lifetime are ranged from 56% to 93%.
Genome mapping in ruminants and map locations for genes influencing reproduction (2000)

Genetic maps provide a critical link between genes and phenotypes and are essential tools in the search for the genetic basis of variation in reproductive traits. Genes coding for hormones, growth factors, receptors, binding proteins, transcription factors and enzymes that influence the development and function of the reproductive axis have been assigned to genetic maps of ruminants and locations can be found in the respective genome databases. In addition, comparative information on gene structure and map location will help define the functions of essential genes. Gene locations from other species can be used because of extensive comparative links among mammalian gene maps. Large-scale projects to sequence genes and the ability to map these genes in parallel in radiation hybrid panels of different species will greatly improve the maps and our ability to translate between them. Cloning the genes responsible for genetic differences in fertility and fecundity in ruminants is likely to provide valuable clues to understanding ovarian function and germ cell development.
The Use of Repeated Measurements to Reduce the Effect of Measurement Errors (1988)

Abstract In this, paper, the errors associated with measurement processes are studied. A best estimator of the true value of the dimension of a product is obtained using replicate readings of the measurement, based on earlier results. The effect of replications on performance measures of a single sampling plan is studied. A method to obtain the optimum number of replications which minimizes the total cost of inspection is also given. Notes Handled by the Applied Probability: Stochastic Processes Department
Improved sugar beet harvester: Gives high quality performance but more development required (1948)

A sugar beet harvester developed at Davis and tested in dry, peat-loam soil at Clarksburg, October 16, 1947, gave 93.7% root recovery and only 6.8% dirt pickup.
Generation of cytotoxic T-cell lines using overlapping pentadecapeptides derived from conserved regions of the adenovirus hexon protein (2010)

Many of the 51 serotypes of adenovirus have been associated with clinically relevant infection. Adenovirus can disseminate rapidly in patients with a compromised immune system, such as that which occurs secondary to haematopoietic progenitor-cell transplantation. The higher rate of infection in recipients of T cell-depleted grafts and in those undergoing T cell-targeted treatment during graft versus host disease demonstrates the importance of a T-cell response in preventing disseminated infection. Studies have shown that the memory response to adenovirus is directed primarily to the hexon protein and is dominated by CD4+ T cells, probably due to the ability of the virus to block its presentation on HLA class I antigens. We have developed an approach to expand adenovirus-specific T cells using a pool of overlapping pentadecapeptides derived from selected conserved regions of hexon. We characterized responses to identify the peptides that are recognized, the responding T-cell subsets and their HLA restriction. Of eight lines that were characterized extensively, seven included both CD4+ and CD8+ T cells and each recognized between two and eight unique peptide sequences. By focusing the response on the conserved sequences of hexon, the cell lines are likely to recognize most of the serotypes responsible for clinically relevant disease. The 15 aa peptides used to prime the responses are more likely than whole virus or longer peptides to expand the less frequent CD8+ memory subset. Lines prepared by using our method may be more effective in adoptive immunotherapy protocols designed to prevent or treat disseminated adenovirus infections in high-risk patients.
Contributions in petroleum geology and engineering (1989)

This book discusses hydrocarbon fluid characteristics and how to evaluate and predict them. Its comprehensive coverage of the different properties of oils and gases promotes more efficient methods and designs for oil and gas exploration and production. The book shows how to use mathematical models to accurately predict transport and thermodynamic properties and surface tensions of naturally occurring oil and gas mixtures. In sixteen chapters, the authors present descriptions of individual oils and gases, discuss how to choose an equation of state, and compare measured and predicted properties. The final chapters of the book deal with practical application of the models to situations in pipeline maintenance and oil recovery processes.
Efficient sparse matrix factorization for circuit simulation on vector supercomputers (1989)

This paper describes an efficient approach to sparse matrix factorization on vector supercomputers. The approach is suitable for application domains like circuit simulation that require the repeated direct solution of unsymmetric sparse linear systems of equations with identical zero-nonzero structure. An Overlap-Scatter data structure is used to represent the sparse matrix, enabling the use of multiple operand access modes to achieve higher performance than earlier proposed approaches. The superior performance of the new solver is demonstrated using a number of matrices derived from circuit simulation runs.
Current State and Future Perspectives of Energy Sources for Totally Implantable Cardiac Devices (2016)

There is a large population of patients with end-stage congestive heart failure who cannot be treated by means of conventional cardiac surgery, cardiac transplantation, or chronic catecholamine infusions. Implantable cardiac devices, many designated as destination therapy, have revolutionized patient care and outcomes, although infection and complications related to external power sources or routine battery exchange remain a substantial risk. Complications from repeat battery replacement, power failure, and infections ultimately endanger the original objectives of implantable biomedical device therapy - eliminating the intended patient autonomy, affecting patient quality of life and survival. We sought to review the limitations of current cardiac biomedical device energy sources and discuss the current state and trends of future potential energy sources in pursuit of a lifelong fully implantable biomedical device.
The reduction of thiazolium salts with sodium borohydride. Part I (1967)

The reduction of a group of thiazolium salts with sodium borohydride has been investigated with particular reference to the influence on the course of the reaction of different 2-substituents. The behaviour of the thiazolium salts with aqueous base is also considered.
Reactive oxidation products promote secondary organic aerosol formation from green leaf volatiles (2009)

Abstract. Green leaf volatiles (GLVs) are an important group of chemicals released by vegetation which have emission fluxes that can be significantly increased when plants are damaged or stressed. A series of simulation chamber experiments has been conducted at the European Photoreactor in Valencia, Spain, to investigate secondary organic aerosol (SOA) formation from the atmospheric oxidation of the major GLVs cis-3-hexenylacetate and cis-3-hexen-1-ol. Liquid chromatography-ion trap mass spectrometry was used to identify chemical species present in the SOA. Cis-3-hexen-1-ol proved to be a more efficient SOA precursor due to the high reactivity of its first generation oxidation product, 3-hydroxypropanal, which can hydrate and undergo further reactions with other aldehydes resulting in SOA dominated by higher molecular weight oligomers. The lower SOA yields produced from cis-3-hexenylacetate are attributed to the acetate functionality, which inhibits oligomer formation in the particle phase. Based on observed SOA yields and best estimates of global emissions, these compounds may be calculated to be a substantial unidentified global source of SOA, contributing 1–5 TgC yr−1, equivalent to around a third of that predicted from isoprene. Molecular characterization of the SOA, combined with organic mechanistic information, has provided evidence that the formation of organic aerosols from GLVs is closely related to the reactivity of their first generation atmospheric oxidation products, and indicates that this may be a simple parameter that could be used in assessing the aerosol formation potential for other unstudied organic compounds in the atmosphere.
Investigation of Tear Film Change After Recovery From Acute Conjunctivitis (2007)

During acute conjunctivitis, inflammation and topical therapeutic agents can alter the tear film secretion, resulting in dry eye for nearly 1 month in recovered eyes. To minimize the effect of topical agents to the tear film, individualized treatment instead of frequent instillation of topical agents is recommended for acute conjunctivitis.
Wiener discrete cosine transform-based image filtering (2012)

A classical problem of additive white (spatially uncorrelated) Gaussian noise suppression in grayscale images is considered. The main attention is paid to discrete cosine transform (DCT)-based denoising, in particular, to image processing in blocks of a limited size. The efficiency of DCT-based image filtering with hard thresholding is studied for different sizes of overlapped blocks. A multiscale approach that aggregates the outputs of DCT filters having different overlapped block sizes is proposed. Later, a two-stage denoising procedure that presumes the use of the multiscale DCT-based filtering with hard thresholding at the first stage and a multiscale Wiener DCT-based filtering at the second stage is proposed and tested. The efficiency of the proposed multiscale DCT-based filtering is compared to the state-of-the-art block-matching and three-dimensional filter. Next, the potentially reachable multiscale filtering efficiency in terms of output mean square error (MSE) is studied. The obtained results are of the same order as those obtained by Chatterjee's approach based on nonlocal patch processing. It is shown that the ideal Wiener DCT-based filter potential is usually higher when noise variance is high.
Lipopolysaccharide from<i>Xanthomonas campestris</i>Induces Defense-Related Gene Expression in<i>Brassica campestris</i> (1995)

Purified lipopolysaccharide (LPS) from Xanthomonas campestris pv. campestris induced accumulation of transcript for beta-1,3-glucanase in turnip at concentrations of 1 micrograms/ml. The lipid A-inner core structure was required for activity but the O-antigen had no role. We suggest that release of LPS in planta triggers expression of at least some defense-related genes.
Reaktionen von 3‐Acylchromonen mit CH‐aciden Verbindungen. 35. Mitt. über Untersuchungen an 4‐Pyronen (1972)

Abstract 3‐Acylchromone ( 5 ) reagieren mit CH‐aciden Verbindungen in einer „vinylogen Acyl‐Lacton‐Umlagerung”︁ je nach Reaktionsbedingungen zu 3‐Ylidenmethyl‐ oder 3‐Pyrimidopyranyl‐chromonen bzw.‐flavonen ( 2, 3, 4, 8 oder 9 ).
Annulations of amidines on halonitroaromatics. A one-step route to quinoxaline and imidazoquinoxaline N-oxides and related structures (1978)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnnulations of amidines on halonitroaromatics. A one-step route to quinoxaline and imidazoquinoxaline N-oxides and related structuresMichael J. Strauss, David C. Palmer, and Raymond R. BardCite this: J. Org. Chem. 1978, 43, 10, 2041–2044Publication Date (Print):May 1, 1978Publication History Published online1 May 2002Published inissue 1 May 1978https://doi.org/10.1021/jo00404a044RIGHTS & PERMISSIONSArticle Views107Altmetric-Citations12LEARN 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 (451 KB) Get e-Alerts Get e-Alerts
A photoelectrochemical determination of the position of the conduction and valence band edges of <i>p</i>-type CuO (1982)

Lithium-doped p-type CuO is a low mobility semiconductor with an indirect band gap of 1.35 eV and a flatband potential of +0.55 V, with respect to the saturated calomel electrode (SCE), when in contact with an electrolyte at a pH of 9.4. Its valence band lies 5.42 eV below the vacuum level and is made up mainly from the Cu2+−3d wavefunctions. An oxygen-2p type band is at 7.33 eV, in agreement with a semi-empirical estimate. Its performance as a photoelectrode for the solar photoelectrolysis of water is rather poor, due to the presence of recombination centers in the band gap and its chemical instability. As photoelectrolysis electrodes, oxides with 3d-type valence bands may have advantages over the more common oxides with 2p-type valence bands.
50mm diameter TE <sub>01</sub> mode helical waveguide optimisation (1978)

Changes to the design of the UK Post Office long distance TE01 mode circular waveguide are described. A 250 m length of the new waveguide structure has been manufactured and assessed; its transmission performance in straight route sections has been improved and much lower loss in curved sections has been achieved.
Introduction: The New York School of Poets (2001)

If Whitman were alive today and chose to go bathing in the waters off Manhattan, ‘abrupt questionings’ would not be the only thing to stir inside him. But New York is as infamous on account of the chemicals its denizens ingest, as for those its industry expels into the water. As the emblem of a contemporary condition of toxicity, New York is an infernal primus inter pares; the most concentrated dose so far of what is present in more diluted form elsewhere, be it vagrancy or insider trading, crime or vanguard art. It is the city to which other cities look for a sign, most often a warning, of the episodes to come in their own unfolding narrative. In one sense a triumph over Nature, its skyscrapers and subway system are the new Nature, as fields of concrete and forests of scaffolding dwarf the species that created them, ‘while nature itself, in the form of parks, a snowfall, cats and dogs, is a detail in the stone and steel of his habitat’.1 To take your hungry, your tired, your poor and stratify them, is the real promise of the Statue of Liberty; but if a race and class-based pecking order divides New York as never before, this city is, in a phrase from John Ashbery’s most famous poem, ‘alive with filiations, shuttlings’. (SPCM 75) The homeless prowl the West Eighties in hopes of better pickings, while in the galleries urban refuse turns into art: self-divided, New York is also uniquely self-reflexive.