gebhart/patrepeval huggingface dataset:
Photoinduced absorption and photoluminescence in poly(2,5-dimethoxy-<i>p</i>-phenylene vinylene) (1992)

We report a study of the photoexcited states in the conjugated polymer poly(2,5-dimethoxy-p-phenylene vinylene). Photoluminescence due to radiative recombination of singlet excitons is observed at energies just below the onset of the \ensuremath{\pi}-${\mathrm{\ensuremath{\pi}}}^{\mathrm{*}}$ absorption band at 2.1 eV. Photoinduced absorption at 80 K shows bands peaking at 0.68, 1.35, and 1.80 eV. The features at 0.68 and 1.8 eV are associated with the same excited state which we propose is a doubly charged bipolaron, while the third at 1.35 eV is unrelated. We assign this 1.35-eV absorption to a triplet-triplet transition of a triplet exciton. The bipolarons are long lived with significant numbers surviving in excess of 100 ms at 80 K, and have a weak temperature dependence such that photoinduced absorption is readily detectable even at room temperature. The triplet exciton has a lifetime of order 2.5 ms at 80 K but this falls rapidly at higher temperature and the response is not detected at room temperature. We contrast these results with those obtained previously for the related poly(arylene vinylene) polymers poly(p-phenylene vinylene), and poly(2,5-thienylene vinylene) and for other conjugated polymers, and draw attention to the important role played in the photophysics of these materials by neutral excited states.
Advances in real-time rendering in 3D graphics and games I (2009)

Advances in real-time graphics research and the increasing power of mainstream GPUs has generated an explosion of innovative algorithms suitable for rendering complex virtual worlds at interactive rates. Every year, the latest video games display a vast variety of sophisticated algorithms that power ground-breaking 3D rendering and push the visual boundaries and interactive experience of rich environments.
Automatic Road Pavement Assessment with Image Processing: Review and Comparison (2011)

In the field of noninvasive sensing techniques for civil infrastructures monitoring, this paper addresses the problem of crack detection, in the surface of the French national roads, by automatic analysis of optical images. The first contribution is a state of the art of the image-processing tools applied to civil engineering. The second contribution is about fine-defect detection in pavement surface. The approach is based on a multi-scale extraction and a Markovian segmentation. Third, an evaluation and comparison protocol which has been designed for evaluating this difficult task—the road pavement crack detection—is introduced. Finally, the proposed method is validated, analysed, and compared to a detection approach based on morphological tools.
ServiceTrak Meets NLOG/NMAP (1999)

Network port scanning tools can be helpful in mapping services and exposures, but in large environments you often get more information than you can handle. This paper describes a project to take the output from NMAP/NLOG and merge it with the existing enterprise host management system. This makes it simple for service or platform specific administrators to study the machines in their purview. 1 Introduction Due to some recent security problems at our site where a number of machines were cracked due to exposures in in.statd, we decided to step up our project of removing or disabling unneeded services on the workstations and servers maintained by our department. Unfortunately, the press of other projects prevented our system administrators responsible for the various operating system (AIX, Solaris, and IRIX) from working on the investigation. So rather than try to look at these systems from the inside, we decided to try looking at them from the &quot;outside&quot;. NLOG and NMAP At about ...
Retrospective reconstruction of high temporal resolution cine images from real‐time MRI using iterative motion correction (2011)

Cardiac function has traditionally been evaluated using breath-hold cine acquisitions. However, there is a great need for free breathing techniques in patients who have difficulty in holding their breath. Real-time cardiac MRI is a valuable alternative to the traditional breath-hold imaging approach, but the real-time images are often inferior in spatial and temporal resolution. This article presents a general method for reconstruction of high spatial and temporal resolution cine images from a real-time acquisition acquired over multiple cardiac cycles. The method combines parallel imaging and motion correction based on nonrigid registration and can be applied to arbitrary k-space trajectories. The method is demonstrated with real-time Cartesian imaging and Golden Angle radial acquisitions, and the motion-corrected acquisitions are compared with raw real-time images and breath-hold cine acquisitions in 10 (N = 10) subjects. Acceptable image quality was obtained in all motion-corrected reconstructions, and the resulting mean image quality score was (a) Cartesian real-time: 2.48, (b) Golden Angle real-time: 1.90 (1.00-2.50), (c) Cartesian motion correction: 3.92, (d) Radial motion correction: 4.58, and (e) Breath-hold cine: 5.00. The proposed method provides a flexible way to obtain high-quality, high-resolution cine images in patients with difficulty holding their breath.
Genotoxic and Antimutagenic Effects of<i>Capparis spinosa</i>L. on the<i>Allium cepa</i>L. Root Tip Meristem Cells (2009)

Abstract Capparis spinosa L. flower buds (CS) aqueous extracts are used in Turkey traditional medicine for their diuretic, antihypertensive, poultice, tonic and other properties. The present study evaluates the genotoxic and antimutagenic effects of capers (C. spinosa L.) flower buds aqueous extract on the Allium cepa L root tip meristem cells. The experiment was carried out in three applications: (1) the onion bulbs were treated with 3.10–2 M Ethyl Methane sulfonate (EMS) for 2 h, after than the EMS treatment, the onion bulbs were treated with three different concentrations (10g/L, 20g/L and 30g/L) of aqueous extract from flowering buds for 24 h. (2) onion bulbs were treated with three different concentrations (10g/L, 20g/L and 30g/L) of aqueous extract for 24 h and then with 3.10–2 M EMS for 2 h (3) Onion bulbs were treated with three different concentrations (10g/L, 20g/L and 30g/L) of aqueous extract for 24 h without EMS treatment. 3.10–2 M EMS was used as positive control and tap water (pH 7.3) was used as negative control. The root tips of onions were squashed after aceto-orcein staining and the cells were analyzed for chromosome aberrations and mitotic index. Growth retardation, significant decrease in mitotic index and chromosome aberrations were observed in root-tip cells treated with aqueous extract before and after the Ethyl Methane sulfonate (EMS) treatment when compared with the controls in all treatments. These effects were concentration-dependent and statistically significant (p<0.05). The results of this study suggest that, CS buds aqueous extract is non-genotoxic. However, the study reveals that CS aqueous extract has antimutagenic potential against EMS induced chromosomal aberrations in A. cepa root meristem cells and the antimutagenic potential of CS flower buds extract is effective at 30 g/L concentration.
Effect of wrist posture on carpal tunnel pressure while typing (2008)

Long weekly hours of keyboard use may lead to or aggravate carpal tunnel syndrome. The effects of typing on fluid pressure in the carpal tunnel, a possible mediator of carpal tunnel syndrome, are unknown. Twenty healthy subjects participated in a laboratory study to investigate the effects of typing at different wrist postures on carpal tunnel pressure of the right hand. Changes in wrist flexion/extension angle (p = 0.01) and radial/ulnar deviation angle (p = 0.03) independently altered carpal tunnel pressure; wrist deviations in extension or radial deviation were associated with an increase in pressure. The activity of typing independently elevated carpal tunnel pressure (p = 0.001) relative to the static hand held in the same posture. This information can guide the design and use of keyboards and workstations in order to minimize carpal tunnel pressure while typing. The findings may also be useful to clinicians and ergonomists in the management of patients with carpal tunnel syndrome who use a keyboard.
Electromagnetic analysis of layered magnetic/conductor structures (2000)

A method is described for calculating the impedance of conductor structures comprised of ferromagnetic and non-magnetic layers of arbitrary cross sectional shape with transverse dimensions which are small compared to the conductors length. The method is exemplified on a conductor of axial symmetry enclosed in a high permeability film of uniaxial anisotropy along the conductor axis. To find the impedance the full boundary value problem for the vector potential is solved, allowing driving and eddy currents in both the conductor and the magnetic film, and taking into account the dynamics of the magnetization governed by the Landau-Lifshitz equations. The results obtained are used to model the giant magneto impedance effect in ferromagnetically coated wires.
Toxicity of recombinant toxic shock syndrome toxin 1 and mutant toxins produced by Staphylococcus aureus in a rabbit infection model of toxic shock syndrome (1993)

Menstrually associated toxic shock syndrome (TSS) is attributed primarily to the effects of staphylococcal exotoxin toxic shock syndrome toxin 1 (TSST-1). A region of the 194-amino-acid toxin spanning residues 115 through 144 constitutes a biologically active site. Several point mutations in the TSST-1 gene in that region result in gene products with reduced mitogenic activity for murine T cells. In this study we evaluated the toxicity of recombinant TSST-1 and several mutants of TSST-1 made by transformed Staphylococcus aureus during in vivo growth in a rabbit infection model of TSS. The toxicities of the transformed strains of S. aureus for rabbits correlated with the mitogenic activities of the recombinant toxins. An isolate originally obtained from a patient with a confirmed case of TSS (S. aureus 587) implanted in a subcutaneous chamber served as a positive control. TSST-1 produced in vivo led to lethal shock within 48 h, and a TSST-1-neutralizing antibody (monoclonal antibody 8-5-7) administered to rabbits challenged with S. aureus 587 prevented fatal illness. Rabbits infected with transformed S. aureus RN4220 expressing wild-type toxin (p17) or mutant toxins retaining mitogenic activity for T cells succumbed within a similar time frame. Blood chemistries of samples obtained from infected animals before death indicated abnormalities in renal and hepatic functions similar to those induced by parenteral injection of purified staphylococcal TSST-1. Mutant toxin 135 (histidine modified to alanine at residue 135) possessed only 5 to 10% of the mitogenic activity of wild-type toxin. Rabbits challenged with transformed S. aureus RN4220 expressing mutant toxin 135 exhibited only mild transient illness. Mutant toxin 135 retained reactivity with monoclonal antibody 8-5-7 and by several criteria was conformationally intact. Toxin from a double mutant, 141.144, with alanine substitutions at residues 141 (histidine) and 144 (tyrosine), also was devoid of mitogenic activity. In this case, antibody recognition was lost. Mutant toxins 115 and 141 were found to possess approximately half-maximal mitogenic activity. Rabbits challenged with S. aureus RN4220 expressing either 115 or 141 toxin succumbed to lethal shock. We conclude that the ability of TSST-1 to activate murine T cells in vitro and its expression of toxicity leading to lethal shock in rabbits are related phenomena.
Inside Microsoft Visual Studio .Net (2003)

Learn how to put all the built-in power of Microsoft® Visual Studio® .NET 2003 to work with this comprehensive, in-depth programming guide. It drills down into the internal workings of Visual Studio .NET to help you get the most out of its features, editors, and project-management capabilities. You'll see how to extend this rich, integrated development environment to maximize your productivity for any project, no matter where you are in the development cycle-or which language you use. You'll also learn how to use macros and add-ins to simplify your work. Code examples in every chapter show you exactly what to do.
Human action tracking guided by key-frames (2002)

The model-based approaches for tracking of human bodies in image sequences can be categorised into two types; fitting model to body frame by frame, and accumulating estimated pose displacements in successive frames after model fitting at the initial frame. The latter has an inherent drawback as accumulation of tracking errors while the one has a great advantage as small computational efforts compared with the former. This paper proposes a new method which can correct the tracking errors by propagation from fitting model to body at a few key-frames. The propagation makes it possible to establish tracking of bodies under occlusion. Capturing the actor's motions in real old movies is presented.
Chemotaxis Toward Amino Acids in <i>Escherichia coli</i> (1972)

Escherichia coli cells are shown to be attracted to the l-amino acids alanine, asparagine, aspartate, cysteine, glutamate, glycine, methionine, serine, and threonine, but not to arginine, cystine, glutamine, histidine, isoleucine, leucine, lysine, phenylalanine, tryptophan, tyrosine, or valine. Bacteria grown in a proline-containing medium were, in addition, attracted to proline. Chemotaxis toward amino acids is shown to be mediated by at least two detection systems, the aspartate and serine chemoreceptors. The aspartate chemoreceptor was nonfunctional in the aspartate taxis mutant, which showed virtually no chemotaxis toward aspartate, glutamate, or methionine, and reduced taxis toward alanine, asparagine, cysteine, glycine, and serine. The serine chemoreceptor was nonfunctional in the serine taxis mutant, which was defective in taxis toward alanine, asparagine, cysteine, glycine, and serine, and which showed no chemotaxis toward threonine. Additional data concerning the specificities of the amino acid chemoreceptors with regard to amino acid analogues are also presented. Finally, two essentially nonoxidizable amino acid analogues, alpha-aminoisobutyrate and alpha-methylaspartate, are shown to be attractants for E. coli, demonstrating that extensive metabolism of attractants is not required for amino acid taxis.
Spindle assembly checkpoint component CaMad2p is indispensable for <i>Candida albicans</i> survival and virulence in mice (2002)

Here, we report an indispensable role for spindle assembly checkpoint (SAC) component CaMad2p in the survival and virulence of Candida albicans in mice. We hypothesized that cell cycle checkpoint functions, especially those monitoring the integrity of DNA and chromosome segregation, might be required for the pathogen to repair damage caused by host defence. To test this idea, we created SAC-defective mutants by deleting the CaMAD2 gene that encodes a key component of the SAC pathway. The CaMAD2 mutant appears normal in morphology, growth rate and growth mode switch in unperturbed conditions. However, it quickly loses viability when treated with nocodazole, which causes disassembly of mitotic spindles. The mutant also exhibits increased frequency of chromosome loss. The virulence of the mutant is greatly reduced in mice, presumably because of the inability of the mutant cells to stop the cell cycle when the host defence damages cellular components important for chromosome segregation. Supporting this hypothesis, unlike the wild-type cells that can proliferate within and eventually grow out of macrophages, most of the CaMAD2 null mutant cells are unable to survive. This study suggests that SAC is required for survival of C. albicans in the host and could thus be targeted for anti-C. albicans therapies.
Plasma Processing of Iron Alloys-(I) Plasma Mitriding of Fe-Cr Alloys. (1992)

Plasma nitriding behavior has been studied for Fe-Cr alloys nitrided by plasma in a mixted gas of N2 and Hz at temperatures from 450 to 550°C in order to discuss an application of plasma nitriding process for providing a functional gradient material. Two nitrided layers are formed:an external layer of γ '-Fe4N and an internal layer where small CrN particles disperse in α-Fe matrix. The growth of the internal nitrided layer is controlled by diffusion of nitrogen in the matrix metal. The internal nitrided layer exhibits higher hardness due to dispersion of small CrN particles. Hardness in nitrided Fe-3%Cr alloy gradually decreases as the distance from the specimen surface increases. The change in hardness is ascribed to that in volume fraction of CrN particles.
Optimizing Au and In micro-bumping for 3D chip stacking (2008)

3D chip stacking technology requires repeated stacking of additional layers without remelting the bumps at lower levels of the stack. This can be achieved by transient liquid phase (TLP) bonding during which all solder is transformed into intermetallic compounds that have higher melting points than the solder itself. In this paper, we study Au/In reaction at different temperatures in order to develop a robust low temperature Au/In TLP bonding process. It is shown that the kinetics of intermetallic compound formation is diffusion-controlled, and the activation energy of Au/In reaction is temperature-dependent: 0.46 and 0.23 eV for temperatures above and below 150degC, respectively. Moreover, a thin Ti layer between Au and In is found to be an effective diffusion barrier at low temperature, while it does not inhibit intermetallic joint formation at elevated temperatures during flip-chip bonding. This allows us to control the intermetallic formation during the distinct stages of TLP bonding process. In addition, a minimal In thickness of 0.5 mum is required in order to enable TLP bonding. Finally, Au/In TLP joints of phi40 to phi60 mum are successfully fabricated at 180degC and with very small solder volume (1 mum thick). The shear strength of our phi40-60 mum joints is in the range of 6-20 MPa, and the electrical connection yield is 100% for the daisy chain containing 1380 bumps with a diameter of 60 mum.
The Cognitive and Negative Symptoms in Schizophrenia Trial (CONSIST): The Efficacy of Glutamatergic Agents for Negative Symptoms and Cognitive Impairments (2007)

The study results suggest that neither glycine nor D-cycloserine is a generally effective therapeutic option for treating negative symptoms or cognitive impairments.
Entity Hierarchy Embedding (2015)

Zhiting Hu, Poyao Huang, Yuntian Deng, Yingkai Gao, Eric Xing. Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 1: Long Papers). 2015.
Kinetics of the Fischer-Tropsch synthesis (1983)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the Fischer-Tropsch synthesisRavindra S. Dixit and Lawrence L. TavlaridesCite this: Ind. Eng. Chem. Process Des. Dev. 1983, 22, 1, 1–9Publication Date (Print):January 1, 1983Publication History Published online1 May 2002Published inissue 1 January 1983https://pubs.acs.org/doi/10.1021/i200020a001https://doi.org/10.1021/i200020a001research-articleACS PublicationsRequest reuse permissionsArticle Views992Altmetric-Citations34LEARN 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 options Get e-Alerts
Temperature dependence of photoinduced anisotropy in rigid solutions of azo dyes (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTemperature dependence of photoinduced anisotropy in rigid solutions of azo dyesV. Mateev, P. Markovskii, L. Nikolova, and T. TodorovCite this: J. Phys. Chem. 1992, 96, 7, 3055–3058Publication Date (Print):April 1, 1992Publication History Published online1 May 2002Published inissue 1 April 1992https://doi.org/10.1021/j100186a051RIGHTS & PERMISSIONSArticle Views80Altmetric-Citations18LEARN 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 (369 KB) Get e-Alerts
<i>a</i>-SiC:H/<i>a</i>-Si:H heterojunction solar cell having more than 7.1% conversion efficiency (1981)

A clear valency electron controllability with substitutional impurity doping in the hydrogenated amorphous silicon carbide has been found. The amorphous silicon carbide is produced by the plasma decomposition of [SiH4(1−X)+CH4(X)] with the dopant gas of a B2H6 or PH3 system. Electrical and optical properties of doped amorphous SiC films are briefly demonstrated. Utilizing this a-SiC:H as a wide-band-gap window material, we have developed a new type of a-SiC:H/a-Si:H heterojunction solar cell. A typical cell performance is Voc = 0.887 V, Jsc = 12.33 mA/cm2, fill factor = 0.653, and the conversion efficiency of 7.14% under AM-1 illumination.
A Bandwidth Sharing Theory for a Large Number of HTTP-Like Connections (2004)

There has been tremendous progress in understanding how bandwidth is shared by TCP-like connections. By associating each TCP-like connection with a utility function, the bandwidth sharing problem of TCP-like connections can be modeled as a distributed optimization problem for utility functions. However, little is known on how bandwidth is shared by HTTP-like connections through their utility functions at the TCP level. One of the main objectives of this paper is to provide a theory for bandwidth sharing of a large number of HTTP-like connections. Based on certain technical assumptions, we show that there is a utility function at the HTTP level for an HTTP-like connection and such a utility function can be derived from the utility function at the TCP level. The bandwidth is then shared by HTTP-like connections through utility functions at the HTTP level. We also address two possible extensions of the theory: the case with impatient TCP connections and the case with multiple types of requests. With appropriate modification of the utility functions at the HTTP level, we show that the bandwidth is still shared by optimizing their utility functions at the HTTP level for the case with impatient TCP connections. For the case with multiple types of requests, the bandwidth shared at the HTTP level can still be found by solving a unique fixed point limit.