gebhart/patrepeval huggingface dataset:
Lateral Graphene–hBCN Heterostructures as a Platform for Fully Two-Dimensional Transistors (2012)

We propose that lateral heterostructures of single-atomic-layer graphene and hexagonal boron-carbon-nitrogen (hBCN) domains, can represent a powerful platform for the fabrication and the technological exploration of real two-dimensional field-effect transistors. Indeed, hBCN domains have an energy bandgap between 1 and 5 eV, and are lattice-matched with graphene; therefore they can be used in the channel of a FET to effectively inhibit charge transport when the transistor needs to be switched off. We show through ab initio and atomistic simulations that a FET with a graphene-hBCN-graphene heterostructure in the channel can exceed the requirements of the International Technology Roadmap for Semiconductors for logic transistors at the 10 and 7 nm technology nodes. Considering the main figures of merit for digital electronics, a FET with gate length of 7 nm at a supply voltage of 0.6 V exhibits I(on)/I(off) ratio larger than 10(4), intrinsic delay time of about 0.1 ps, and a power-delay-product close to 0.1 nJ/m. More complex graphene-hBCN heterostructures can allow the realization of different multifunctional devices, translating on a truly two-dimensional structure some of the device principles proposed during the first wave of nanoelectronics based on III-V heterostructures, as for example the resonant tunneling FET.
Family, fields, and ancestors: constancy and change in China's social and economic history, 1550-1949 (1988)

This is the first book to synthesize and make available important recent research on China's social and economic history, offering a completely new perspective on the four centuries from the Ming Dynasty to the Communist revolution. Drawing on a wide array of sources, the author clarifies the complexities of Chinese society, covering a wide range of topics from population trends, class structure, and religion to agriculture, commerce, and manufacturing.
In Asians and Whites, Gene Expression Varies by Race (2007)

Genetic variation among races, long a political hot potato, has also been a scientific puzzle. Although researchers have cataloged different frequencies of inherited DNA among racial groups, and physicians have found that some groups are disproportionately susceptible to certain diseases, it's not clear how or even whether the two are linked. Do subtle differences in DNA between races really matter, medically speaking?
<title>Adaptation effects in stereo due to on-line changes in camera configuration</title> (1992)

The ability to make on-line adjustments to stereoscopic camera position parameters dynamically, during execution of telemanipulation tasks, allows one to maintain a theoretically `optimal' camera configuration, in response to changing viewing conditions. Associated with this, however, is the problem of the observer's being forced to adapt to a (continuously) changing relationship between perceived inter-object distances in the depth plane and the corresponding real distances. One problem in particular is the potential conflict between varying stereoscopic depth cues and unchanging size cues. Two experiments were performed. In the first we investigated how depth judgement ability varied with unsignalled changes in camera convergence distance. This resulted in significant changes in distance judgement, with overestimation for increases in camera separation and underestimation for decreases. Short- term feedback on judgement error was sufficient to correct the changes. In the second experiment, on-screen calibrated depth cues were added, by means of overlaid stereoscopic computer graphics, causing the significant estimation errors found in the first experiment to disappear. The implication of this is that distance/depth judgement can in principle be rescaled to compensate for perceptual conflicts caused by changing camera configuration, by providing either real or virtual depth scaling cues at the task site.
Case 12-1967 (1967)

Presentation of CaseA seventy-seven-year-old woman was admitted to the hospital because of pain in the abdomen.Five months previously she had the onset of pain in the right upper quadrant of the abdomen that radiated to the back, accompanied by anorexia and episodes of belching and nausea. There was a loss of 25 pounds in weight. She complained of a sensation of fullness in the stomach and early satiety. There was no history of fever or chills, vomiting, alteration in bowel habits or change in the color of the urine or stools.For twenty-two years she had had diabetes . . .
Cambridge Neuropsychological Test Automated Battery (CANTAB): utility and validation (1994)

Discusses CANTAB, a set of computerized neuropsychological test batteries with three main interactive, menu-driven components. Firstly visual memory: consisting of short pattern and spatial recognition memory tests, a simultaneous and delayed matching to sample test, and a test of paired associate, conditional learning of pattern-location associations. Secondly attention: consisting of tests of intradimensional and extradimensional set-shifting and a reaction time based visual search task for conjunctive features, according to the Sternberg paradigm. Thirdly spatial working memory and planning: consisting of tests of spatial span, a self-ordered test of spatial working memory and a computerized version of the Tower of London task, which includes separate measures of thinking and movement time, parallel forms contains four parallel versions of the main tests from the visual memory and attention batteries.<
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Rendering synthetic ground truth images for eye tracker evaluation (2014)

When evaluating eye tracking algorithms, a recurring issue is what metric to use and what data to compare against. User studies are informative when considering the entire eye tracking system, however they are often unsatisfactory for evaluating the gaze estimation algorithm in isolation. This is particularly an issue when evaluating a system's component parts, such as pupil detection, pupil-to-gaze mapping or head pose estimation.
Canine mesenchymal stem cells show antioxidant properties against thioacetamide‐induced liver injury <i>in vitro</i> and <i>in vivo</i> (2013)

We concluded that cMSC injection reduce TAA-induced liver injury through antioxidant activities and hepatoprotective effects, showing a curative potential in liver diseases.
A new method for evalution of antithrombogenicity of materials (1972)

Abstract A new method was developed for evaluating kinetically the antithrombogenicity of materials. The amount of thrombus formed was measured gravimetrically at an appropriate interval of time after calcium chloride was added to ACD blood in contact with a test material. Graphic curves for thrombus formation on glass, Silastic, Hydron, and treated natural tissues were obtained and compared. There was good correlation between our in vivo tests and in vivo observations.
Authentication of Coffee Bean Variety by Nearinfrared Reflectance Spectroscopy of Dried Extract (1996)

The potential of near-infrared (NIR) reflectance spectroscopy for discriminating between coffee beverage prepared from pure Arabica, pure Robusta and blends of these two varieties was investigated. Dried beverages were produced by both lyophilisation and air-drying under vacuum on glass-fibre filter paper. Spectral collections were treated by principal component and factorial discriminant analyses. Using the wavelength range 1100–2498 nm, only three of 65 test samples were misclassified when the filter paper approach was used. When freeze-dried coffee beverages were analysed, nine of the 65 test samples were misclassified. The basis for this discrimination appears to involve caffeine and/or other alkaloids.
Mapping Zones of Contaminated Ground‐Water Discharge Using Creek‐Bottom‐Sediment Vapor Samplers, Aberdeen Proving Ground, Maryland (1991)

Abstract Forty passive vapor samplers were placed in creek‐bottom sediment in an area where ground water contaminated with volatile organic compounds is discharging to surface water. The vapor samplers were composed of activated carbon fused to a ferromagnetic wire in a test tube. The samplers were analyzed in a laboratory using an extranuclear quadrupole mass spectrometer. Data from the samplers reveal distributions of chloroform, tetrachloroethylene, trichloroethylene, and benzene in the bottom sediment that closely correspond to the distribution of those compounds in the adjacent ground water. Moreover, concentrations of tetrachloroethylene in bottom sediment estimated from the samplers are similar to those measured in observation wells near the shoreline. Thus, the passive vapor samplers may be used to locate and map areas where contaminated ground water is being discharged to surface water and to determine the approximate concentrations of specific contaminants in the discharging ground water.
Determination of Oxygen and Nitrogen in Packaged Beer via Gas Chromatography (1986)

Package oxygen content has previously been determined by isolating the non-carbon dioxide gases from the package and analyzing them by gas chromatography. This paper describes a technique that determines oxygen and nitrogen in the package by gas chromatography and the application of the ideal-gas law and Henry's law. The gases in the package were equilibrated between the liquid and gaseous phases by shaking at room temperature. A modified Zahm piercing device and an automatic sampling valve were used to introduce a portion of the package headspace gas onto the chromatographic column. Measurement of the oxygen (or nitrogen) peak area and the package temperature, pressure, and headspace volume permitted calculation of the total oxygen (or nitrogen) content of the package. Results obtained in this way were reproducible and compared well with those obtained by polarographic electrode and Zahm techniques. The method permitted observation of changes in oxygen content after various processing or storage conditions.
Rhodamine as a fluorescent probe of lymphocyte activation. (1979)

Fresh rat and mouse lymphoid cells have been labelled by stable linkage with tetramethylrhodamine isothiocyanate (TMRITC). A change in intensity, either an increase or decrease of the fluorescent emission of the cells, detected by microfluorimetry, was induced by mitogen stimulation or the mixed lymphocyte reaction. The change in fluorescence was observed within 3 h of mitogen stimulation and within 0.5 h in the mixed lymphocyte test. These early cellular responses were detectable consistently whether the labelling was done before or after mitogen stimulation; post-labelling only was studied in the mixed lymphocyte reaction. The method should provide a time-saving practical procedure for early detection of the lymphoid cell responses and would readily lend itself to flow cytofluorimetry for possible routine diagnostic use.
Fluid mechanics (1970)

Being a physicist in an aerodynamic department, I was very interested in the article on the mechanics of fluids in the November 1969 issue of Physics Bulletin. The artiele itself was very informative and extremely well written but I feel that I must comment on the front cover photograph depicting a model mini car in an airstream.
Self-Assembly and Structure of Interconverting Multinuclear Inorganic Arrays: A [4×5]-AgI20 Grid and an AgI10 Quadruple Helicate (2000)

Coordination of the pentatopic ligand 3 with AgI leads to the simultaneous self-assembly of two polynuclear architectures: a [4 x 5] grid-type species 10 and a quadruple-helicate 11, which contain twenty and ten silver ions. respectively. Their structures have been established by X-ray diffraction analysis of the crystals obtained as a mixture on crystallisation. Complex 10 contains two [2 x 5]-AgI10 rectangular subgrids located on opposite sides of an array of parallel ligands of 3 that are twisted into a transoid N=C-C=N arrangement around the central C-C bond; it may thus be formulated as a grid of grids: [2 x (2 x 5)]. Complex 11 is an inorganic quadruple helicate that consists of two sets of two parallel ligands of 3 connected by an array of ten silver ions. Both compounds 10 and 11 are novel types of polynuclear complexes that are composed of two subunits. Their formation points to the possibility of generating specific arrays of metal ions by self-assembly, involving, in particular, a combination of subunits within the overall entity. They represent organised patterns of ion dots of special significance in view of their formal relationship to quantum dots.
Characterization of Aryloxyalkanoate Dioxygenase-12, a Nonheme Fe(II)/α-Ketoglutarate-Dependent Dioxygenase, Expressed in Transgenic Soybean and <i>Pseudomonas fluorescens</i> (2013)

Aryloxyalkanoate dioxygenase-12 (AAD-12) was discovered from the soil bacterium Delftia acidovorans MC1 and is a nonheme Fe(II)/α-ketoglutarate-dependent dioxygenase, which can impart herbicide tolerance to transgenic plants by catalyzing the degradation of certain phenoxyacetate, pyridyloxyacetate, and aryloxyphenoxypropionate herbicides. (1) The development of commercial herbicide-tolerant crops, in particular AAD-12-containing soybean, has prompted the need for large quantities of the enzyme for safety testing. To accomplish this, the enzyme was produced in Pseudomonas fluorescens (Pf) and purified to near homogeneity. A small amount of AAD-12 was partially purified from transgenic soybean and through various analytical, biochemical, and in vitro activity analyses demonstrated to be equivalent to the Pf-generated enzyme. Furthermore, results from in vitro kinetic analyses using a variety of plant endogenous compounds revealed activity with trans-cinnamate and indole-3-acetic acid (IAA). The catalytic efficiencies (kcat/Km) of AAD-12 using trans-cinnamate (51.5 M(-1) s(-1)) and IAA (8.2 M(-1) s(-1)) as substrates were very poor when compared to the efficiencies of plant endogenous enzymes. The results suggest that the presence of AAD-12 in transgenic soybean would not likely have an impact on major plant metabolic pathways.
Nonlinear optical properties of CuxS and CuInS2 nanoparticles in sol–gel glasses (2000)

Silica glasses with ultrafine CuxS and CuInS2 particles (average radius of 5±3 nm) were fabricated by means of a sol–gel technique. Linear and differential absorption spectra were studied. The glasses reveal absorption peaks in the 600–700 nm range associated with the first excitonic resonance in the quantum confined particles. Laser excitation by 540 nm pulses leads to the induced absorption effect in the 480–980 nm spectral range. The relaxation of the induced absorption has a time constant equal to about 500 ps for CuS-doped glasses and a biexponential type (with τ1≈30 ps and τ2&gt;1 ns) for CuInS2-doped ones.
ATP-Dependent Nucleosome Remodeling (2002)

It has been a long-standing challenge to decipher the principles that enable cells to both organize their genomes into compact chromatin and ensure that the genetic information remains accessible to regulatory factors and enzymes within the confines of the nucleus. The discovery of nucleosome remodeling activities that utilize the energy of ATP to render nucleosomal DNA accessible has been a great leap forward. In vitro, these enzymes weaken the tight wrapping of DNA around the histone octamers, thereby facilitating the sliding of histone octamers to neighboring DNA segments, their displacement to unlinked DNA, and the accumulation of patches of accessible DNA on the surface of nucleosomes. It is presumed that the collective action of these enzymes endows chromatin with dynamic properties that govern all nuclear functions dealing with chromatin as a substrate. The diverse set of ATPases that qualify as the molecular motors of the nucleosome remodeling process have a common history and are part of a superfamily. The physiological context of their remodeling action builds on the association with a wide range of other proteins to form distinct complexes for nucleosome remodeling. This review summarizes the recent progress in our understanding of the mechanisms underlying the nucleosome remodeling reaction, the targeting of remodeling machines to selected sites in chromatin, and their integration into complex regulatory schemes.
Fuzzy Controller for Automatic Steering in Heavy Vehicle Semi-Trailers (2013)

Ingeniería Investigación y Tecnología es una publicación trimestral, arbitrada, de investigación científica y tecnológica editada e impresa por la Facultad de Ingeniería de la UNAM. Su propósito es difundir información y conocimientos originales e inéditos relacionados con la ingeniería. Es un espacio para profesores, investigadores, profesionales y estudiantes de todo el mundo.
PERiMETER – pseudonymization and personal metadata encryption for privacy-preserving searchable documents (2012)

The average costs of data leakage are steadily on the rise. Especially in healthcare, the disclosure of sensitive information may have unfavorable consequences for the patient. As a consequence, several data security and access control mechanisms have been introduced, ranging from data encryption to intrusion detection or role-based access control, doing a great work in protecting sensitive information. However, the majority of these concepts are centrally controlled by administrators who are a major threat to the patients’ privacy. Apart from administrators, other internal persons, such as hospital staff members, may exploit their access rights to snoop around in private health data. This work presents PERiMETER, a security protocol for data privacy that is strictly controlled by the data owner. It integrates pseudonymization and encryption to create a methodology that uses pseudonyms as access control mechanism, protects secret cryptographic keys by a layer-based security model, and provides privacy-preserving querying.
Fibrin-stabilizing factor inhibitors. 11. Monodansylated weak aliphatic diamines (1974)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFibrin-stabilizing factor inhibitors. 11. Monodansylated weak aliphatic diaminesChristine Ljunggren, Kurt J. Hoffmann, Pal Stenberg, Uno Svensson, J. Lars. G. Nilsson, Ann Hartkoorn, and Ragnar LundenCite this: J. Med. Chem. 1974, 17, 6, 649–651Publication Date (Print):June 1, 1974Publication History Published online1 May 2002Published inissue 1 June 1974https://pubs.acs.org/doi/10.1021/jm00252a017https://doi.org/10.1021/jm00252a017research-articleACS PublicationsRequest reuse permissionsArticle Views65Altmetric-Citations6LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Prolonged inhibition by X-rays of DNA synthesis in cells obtained by transformation of primary rat embryo fibroblasts with oncogenes H-ras and v-myc. (1992)

Transfection of primary rat embryo fibroblasts with the H-ras oncogene plus the cooperating oncogene v-myc results in the development of foci of morphologically altered tumorigenic cells. We examined radiation (X-rays) induced inhibition of DNA synthesis in cell lines derived from such transformed clones and compared the results to those obtained with the nontransformed parental cells, rat embryo fibroblasts, as well as with cells immortalized either spontaneously, or after transfection with nuclear oncogenes (v-myc, E1A). Inhibition by X-rays of DNA synthesis was higher and persisted for longer periods of time in the H-ras- plus v-myc-transformed cell lines as compared to their nontrasformed counterparts. When the rate of DNA synthesis was measured as a function of dose 3 h after irradiation, biphasic curves were observed in all cell lines tested with a radiation sensitive and a radiation resistant component, known to correspond to inhibition of replicon initiation and chain elongation, respectively. A substantially larger inhibition of DNA synthesis was observed between 0 and 30 Gy in H-ras- plus v-myc-transformed cell lines, as compared to their nontransformed counterparts, presumably caused by sustained inhibition of replicon initiation. Hypersensitive DNA synthesis to X-rays was also observed in a transformed cell line obtained by transfection of rat embryo fibroblasts with H-ras in cooperation with the oncogene E1A, but normosensitive DNA synthesis in a rare transformant obtained by transfection with H-ras alone. These results suggest a direct or indirect involvement of the oncogene H-ras in cooperation with the oncogene v-myc (or other nuclear oncogenes such as E1A) in the control of DNA synthesis in irradiated cells. This control of DNA synthesis may be mediated via a trans-acting mechanism that involves the production of a diffusible factor in response to the radiation insult, or, by a cis-acting mechanism that directly affects the replication machinery. Circumstantial evidence for possible involvement of oncogenes of the ras and myc families in DNA synthesis support this hypothesis. There was an inverse correlation between sensitivity to radiation-induced killing and prolonged inhibition by radiation of DNA synthesis, with radioresistant cell lines displaying longer inhibition of DNA synthesis. However, inhibition by radiation of DNA synthesis was similar in normal human fibroblasts (W138) and cells derived from a radiation-resistant human carcinoma cell line (SQ-20B) suspected to carry an abnormal c-raf-1 oncogene.(ABSTRACT TRUNCATED AT 400 WORDS)