gebhart/patrepeval huggingface dataset:
Computational fluid dynamics simulation study of the gas flow balance in a vertical HVPE reactor with a showerhead for low cost bulk GaN crystal growth (2019)

Abstract In order to make low cost bulk GaN single crystal with a high growth rate, we have built a vertical HVPE reactor with a showerhead configuration. The flow from the showerhead of the reactor is independently controlled by inner/outer two sets of gas supply lines. This special showerhead design makes the flow model different from the conventional showerhead reactors. We have employed a finite element-based simulator to study the fluid dynamic and crystal growth of this inner/outer flow independently controlled showerhead. Two simulation experiments were performed. One experiment has demonstrated that both growth rate and Ga yield can be improved without compromising the uniformity by controlling the different input parameters of inner and outer flow on the showerhead, as compared with the conventional showerhead. The other experiment has demonstrated that the showerhead can be further optimized by changing the inner/outer area ratio and input parameters.
Integrating Variable Wind Power Using a Hydropower Cascade (2016)

In this paper, we examine the ability of a hydropower cascade to balance variability from wind power. We consider a coordinated hydro-wind system that satisfies a single power balance, and we use a real-time control scheme to optimize system operations such that wind and load curtailment is minimized. The control scheme considers system hydraulics (including dynamic tailrace elevations and water travel times) and system constraints. Generation from an individual hydropower plant is modeled using a convex piecewise planar approximation. We give results from a case study involving hydro and wind power in the Pacific Northwest region of the United States. The objective of this paper is to present a framework for evaluating how the regulation of wind generation affects hydropower operations. Our intention is to use this framework in future work to perform a systematic study of balancing capability across different hydraulic conditions, system constraints, and wind generation scenarios.
Structure and Dynamics of Coarse-Grained Ionomer Melts in an External Electric Field (2015)

We perform molecular dynamics simulations on a set of ionomer melts in the presence of a static, external electric field. We employ the same coarse-grained bead–spring model from our previous simulations, which characterized the zero-field morphologies and dynamics of the isolated or percolated ionic aggregates observed in these systems. Here we investigate the electric field effects on these aggregates. In the linear response regime, the morphology of both isolated and percolated aggregates is unaltered because the force between the two ions at contact is much stronger than the force on an ion due to the external field. However, the same fields are strong enough to bias the local ion dynamics so that ions in the percolated systems, which contain a continuous ionic network, transition to the steady state drift regime. Furthermore, the field biases the motion of oppositely charged ions in opposite directions and decorrelates the ionic aggregates along the field direction. In the systems with isolated ionic aggregates, higher fields are required to observe the same dynamical response. Finally, we find that the conductivity is strongly influenced by the equilibrium aggregate morphologies of these systems; the ionomers with percolating ionic aggregates have the largest conductivities.
Discovery of New Al-Cu-Fe Minerals in the Khatyrka CV3 Meteorite (2016)

Introduction: During a nanomineralogy investigation of the Khatyrka CV3 carbonaceous chondrite, we have identified two new alloy minerals (AlCu with a Pm-3m CsCl structure and Al_3Fe with a C2/m structure) and associated icosahedrite (quasicrystal Al_(63)Cu_(26)Fe_(11) with a five-fold symmetry) at micron scales in section 126A of USNM 7908. The section belongs to the larger Grain 126, which is one of the fragments recovered from an expedition to the Koryak Mountains in far eastern Russia in 2011 [1] as a result of a search for samples that would provide information on the origin of the quasicrystal mineral icosahedrite [2,3,4]. The recovered fragments have meteoritic (CV3-like) oxygen isotopic compositions and are identified collectively as coming from the Khatyrka meteorite [5], which formed 4.5 billion years ago during the earliest stages of the solar system. Khatyrka is unique, so far being the only meteorite to host metallic Al component.
Design Oriented Analysis of Switched Capacitor DC–DC Converters (2019)

A novel approach to the design of switched capacitor (SC) converters is presented in this article. By recognizing the relationship between three design parameters in SC converters, namely capacitance, switching frequency, and switch on-resistance, this work is able to align the design method of SC more closely with conventional power converters. Using the charge-multiplier framework for design, capacitor sizes can be related to one another and subsequently to output voltage ripple, a key design parameter of converters. Optimization tools are used to take the equations developed for hand calculation and enable a more broad generalization of how SC converters can be designed. Typically it is thought that the larger the voltage ripple in SC converters is, the less efficient the converter is. However, this design method shows that this is not necessarily the case. Experimental prototypes are designed with these tools to show the validity of the proposed method.
Magnet-in-the-Semiconductor Nanomaterials: High Electron Mobility in All-Inorganic Arrays of FePt/CdSe and FePt/CdS Core–Shell Heterostructures (2013)

We report a colloidal synthesis and electrical and magnetotransport properties of multifunctional "magnet-in-the-semiconductor" nanostructures composed of FePt core and CdSe or CdS shell. Thin films of all-inorganic FePt/CdSe and FePt/CdS core-shell nanostructures capped with In2Se4(2-) molecular chalcogenide (MCC) ligands exhibited n-type charge transport with high field-effect electron mobility of 3.4 and 0.02 cm(2)/V·s, respectively. These nanostructures also showed a negative magnetoresistance characteristic for spin-dependent tunneling. We discuss the mechanism of charge transport and gating in the arrays of metal/semiconductor core-shell nanostructures.
Guiding glaucoma laser surgery using Fourier-domain optical coherence tomography at 1.3 μm (2012)

Glaucoma is a disease of the optic nerve that is usually associated with an increased internal pressure of the eye and can lead to a decreased vision and eventually blindness. It is the second leading cause of blindness worldwide with more than 80 million people affected and approximately 6 million blind. The standard clinical treatment for glaucoma, after unsuccessful administration of eyedrops and other treatments, is performing incisional surgery. However, due to post-surgical complications like scarring and wound healing, this conventional method has a global success rate of only about 60%. In comparison, as femtosecond laser surgery may be performed in volume and is a priori less invasive and less susceptible of causing scarring, glaucoma laser surgery could be a novel technique to supplement the conventional glaucoma surgery. We have been working on the development of a new tool for glaucoma treatment that uses an optimized femtosecond laser source centered at 1.65 &#956;m wavelength for making the surgery and an imaging system based on optical coherence tomography (OCT) for guiding the laser surgery. In this proceeding, we present the results obtained so far on the development and utilization of Fourier-domain OCT imaging system working at 1.3 &mu;m center wavelength for guiding the laser incision. Cross-sectional OCT image of pathological human cornea showing the Schlemm's canal, where the surgery is intended to be done, is presented. By coupling OCT imaging system with the laser incision system, we also demonstrate real-time imaging of femtosecond laser incision of cornea.
Rate constants for the decomposition of a simple alkanediazoate at physiological pH (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRate constants for the decomposition of a simple alkanediazoate at physiological pHJari Hovinen and James C. FishbeinCite this: J. Am. Chem. Soc. 1992, 114, 1, 366–367Publication Date (Print):January 1, 1992Publication History Published online1 May 2002Published inissue 1 January 1992https://pubs.acs.org/doi/10.1021/ja00027a060https://doi.org/10.1021/ja00027a060research-articleACS PublicationsRequest reuse permissionsArticle Views104Altmetric-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 InRedditEmail Other access optionsGet e-Alertsclose Get e-Alerts
Postgraduate education of traditional Japanese (Kampo) medicine: a current survey on the training hospitals in Kanagawa prefecture. (2014)

Kampo education should be introduced into large training hospitals, where qualified Kampo instructors are more easily found, and where many interns and residents work.
Down-regulation of LATS kinases alters p53 to promote cell migration (2015)

p53 is a pivotal tumor suppressor and a major barrier against cancer. We now report that silencing of the Hippo pathway tumor suppressors LATS1 and LATS2 in nontransformed mammary epithelial cells reduces p53 phosphorylation and increases its association with the p52 NF-κB subunit. Moreover, it partly shifts p53's conformation and transcriptional output toward a state resembling cancer-associated p53 mutants and endows p53 with the ability to promote cell migration. Notably, LATS1 and LATS2 are frequently down-regulated in breast cancer; we propose that such down-regulation might benefit cancer by converting p53 from a tumor suppressor into a tumor facilitator.
Highly Modular POP Ligands for Asymmetric Hydrogenation: Synthesis, Catalytic Activity, and Mechanism (2010)

A library of enantiomerically pure P-OP ligands (phosphine-phosphite), straightforwardly available in two synthetic steps from enantiopure Sharpless epoxy ethers is reported. Both the alkyloxy and phosphite groups can be optimized for maximum enantioselectivity and catalytic activity. Their excellent performance in the Rh-catalyzed asymmetric hydrogenation of a wide variety of functionalized alkenes (26 examples) and modular design makes them attractive for future applications. The lead catalyst incorporates an (S)-BINOL-derived (BINOL = 1,1'-bi-2-naphthol) phosphite group with computational studies revealing that this moiety has a dual effect on the behavior of our P-OP ligands. On one hand, the electronic properties of phosphite hinder the binding and reaction of the substrate in two out of the four possible manifolds. On the other hand, the steric effects of the BINOL allow for discrimination between the two remaining manifolds, thereby elucidating the high efficiency of these catalysts.
Electrically tunable Yb-doped fiber laser based on a liquid crystal photonic bandgap fiber device (2010)

We demonstrate electrical tunability of a fiber laser using a liquid crystal photonic bandgap fiber. Tuning of the laser is achieved by combining the wavelength filtering effect of a tunable liquid crystal photonic bandgap fiber device with an ytterbium-doped photonic crystal fiber. We fabricate an all-spliced laser cavity based on the liquid crystal photonic bandgap fiber mounted on a silicon assembly, a pump/signal combiner with single-mode signal feed-through and an ytterbium-doped photonic crystal fiber. The laser cavity produces a single-mode output and is tuned in the range 1040-1065 nm by applying an electric field to the silicon assembly.
SHORT-RADIUS THRIE BEAM TREATMENT FOR INTERSECTING STREETS AND DRIVES. FINAL REPORT (1994)

At sites where a driveway or secondary roadway intersects a primary roadway in close proximity to a bridge end, the available space will not accommodate a standard length of approach guardrail, and alternate treatments are required. In Study 1263, a short-radius nested W-beam treatment was developed for use at these locations. Although the design offered improved impact performance over existing systems, it failed to pass one of the design test conditions. This study was undertaken to develop and test a new short-radius thrie-beam guardrail treatment suitable for use by the Texas Department of Transportation (TxDOT) that meets nationally recognized safety standards. The new treatment consists of a single 10-ga. thrie-beam rail mounted at a height of 787 mm (31 in.) and supported on weakened, round wood posts. The system extends approximately 9.75 m (32 ft) from the bridge end along the primary roadway at which point it is curved in a 4.87-m (16-ft) radius and extended down the secondary roadway. A series of five crash tests was used to evaluate the impact performance of this short-radius thrie-beam system. Although it failed to contain a 3/4-ton (680-kg) pickup truck as required by NCHRP Report 350, subsequent testing showed that it successfully meets the guidelines and evaluation criteria set forth in NCHRP Report 230, and is suitable for implementation where site conditions warrant such a treatment. In addition to offering significantly improved impact performance over existing designs, the thrie-beam design should be much easier to install and maintain than the interim nested W-beam design developed under Study 1263.
Development of a New Method to Measure Eye Motion Using Magnetic Contact Lens (1992)

A new measuring method of the eye motion for nystagmus diagnosis using magnetic contact lens is reported, which has high accuracy and noise immunity and less physical and mental restriction for patient and his/her eye motion. The designed contact lens has a ring of 6-8 pieces of planar Sm-Co magnets surrounding its center. Four Hall sensors detect the magnetic field, and the position of the contact lens, more exactly, the rotation angle, is calculated from the signals. A simple calibration procedure to determine the function between the detected signal and the rotation angle is introduced. We compare measured results from both this system and the conventional EOG and show the system is more precise and capable than EOG, in particular, on vector analysis of the motion. Also we show some interesting result that proves the Bell's phenomenon, which is difficult to observe precisely by EOG.
Avaliação de Proteção contra Ataques de Negação de Serviço Distribuídos (DDoS) utilizando Lista de IPs Confiáveis (2007)

A severidade dos problemas causados por ataques DDoS e o aumento da freqüência e sofisticação dos mesmos têm contribuído para o surgimento de um grande número de mecanismos de defesa. Neste trabalho é proposto um sistema de detecção e prevenção de ataques DDoS baseado numa arquitetura modularizada. A idéia principal da solução consiste em manter uma tabela com o histórico de boas conexões já estabelecidas na rede, para que em situações de ataque essas sejam favorecidas com a maior parte da largura de banda disponível em detrimento de conexões desconhecidas e/ou de atacantes que serão limitadas por filtros. Os resultados dos testes demonstraram que a solução apresenta bom desempenho contra ataques DDoS massivos, grande escalabilidade e baixo consumo de recursos do sistema enquanto não prejudica o trafego legitimo.
Buitre negro - Aegypius monachus (Linnaeus, 1766) (2017)

A comprehensive review of the natural history of the Black vulture Aegypius monachus in Spain.
Automatic Error Analysis Using Computer Algebraic Manipulation (1977)

article Automatic Error Analysis Using Computer Algebraic Manipulation Share on Author: David R. Stoutemyer Department of Electrical Engineering, University of Hawaii, 2540 Dole, St., Honolulu, Hawaii Department of Electrical Engineering, University of Hawaii, 2540 Dole, St., Honolulu, HawaiiView Profile Authors Info & Claims ACM Transactions on Mathematical SoftwareVolume 3Issue 1March 1977 pp 26–43https://doi.org/10.1145/355719.355721Published:01 March 1977 12citation380DownloadsMetricsTotal Citations12Total Downloads380Last 12 Months1Last 6 weeks0 Get Citation AlertsNew Citation Alert added!This alert has been successfully added and will be sent to:You will be notified whenever a record that you have chosen has been cited.To manage your alert preferences, click on the button below.Manage my AlertsNew Citation Alert!Please log in to your account Save to BinderSave to BinderCreate a New BinderNameCancelCreateExport CitationPublisher SiteGet Access
Anatomy and physiology of translation: the academic research imperative (2015)

The transfer of academic innovation to clinical practice and industry is taking on an increasingly important role in academic centers, but significant challenges remain. This work identifies some of the pivotal elements that are required to assemble, manage and accelerate the pace of successful translational research. These elements can be incorporated in new models of translational research facilitation that improve the process of converting academic innovations to commercial products where they can be used to benefit patient health on a large scale.
Production of solar-grade silicon: A comparison study of the reduction of SiF<inf>4</inf> with Na, Mg, or Al metals (2016)

The process of producing solar-grade silicon by direct reduction of SiF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> with Na metal is well established and demonstrated to pilot-plant scale (50 MTY). The silicon obtained contains most impurities, including boron and phosphorus, at levels below 1 ppm. Such silicon has been used to produce solar cells with efficiencies over 18% using commercial manufacturing lines and processes. Recently, we have experimented using Mg and Al as reducing elements. We have shown that Mg may also be a good candidate, and its use may appreciably reduce material costs and total energy required for the solar-grade silicon production. The reduction with Al, although thermodynamically favored, takes place only at high temperatures with a relatively low rate and extent of reaction. In addition, this reaction is complicated by several chemical vapor transport mechanisms. The conclusion is that Al is not attractive reductant for solar silicon production. A comparison study of thermodynamics, the reaction behaviors, and the purity of silicon will be presented.
Widely-distributed Radar Imaging Based on Consensus ADMM (2020)

A widely-distributed radar system is a promising architecture to enhance radar imaging performance. However, most existing algorithms rely on isotropic scattering assumption, which is only satisfied in collocated radar systems. Moreover, due to noise and imaging model imperfections, artifacts such as layovers are common in radar images. In this paper, a novel $l_1$-regularized, consensus alternating direction method of multipliers (CADMM) based algorithm is proposed to mitigate artifacts by exploiting a widely-distributed radar system's spatial diversity. By imposing the consensus constraints on the local images formed by distributed antenna clusters and solving the resulting distributed optimization problem, the scenario's spatial-invariant common features are retained. Simultaneously, the spatial-variant artifacts are mitigated, and it will finally converge to a high-quality global image in the consensus of all distributed measurements. The proposed algorithm outperforms the joint sparsity-based composite imaging (JSC) algorithm in terms of artifacts mitigation. It can also reduce the computation and storage burden of large-scale imaging problems through its distributed and parallelizable optimization scheme.
Supplementary Figure Legends 1-8 from Intermittent Administration of MEK Inhibitor GDC-0973 plus PI3K Inhibitor GDC-0941 Triggers Robust Apoptosis and Tumor Growth Inhibition (2023)

&lt;p&gt;PDF file - 68K&lt;/p&gt;
Supplementary Figure 4 from Targeting Nodal in Conjunction with Dacarbazine Induces Synergistic Anticancer Effects in Metastatic Melanoma (2023)

&lt;p&gt;DTIC and anti-Nodal antibody combination treatment promotes cell death in SK-MEL-28 cells.&lt;/p&gt;
Multiplex primer prediction software for divergent targets (2009)

We describe a Multiplex Primer Prediction (MPP) algorithm to build multiplex compatible primer sets to amplify all members of large, diverse and unalignable sets of target sequences. The MPP algorithm is scalable to larger target sets than other available software, and it does not require a multiple sequence alignment. We applied it to questions in viral detection, and demonstrated that there are no universally conserved priming sequences among viruses and that it could require an unfeasibly large number of primers ( approximately 3700 18-mers or approximately 2000 10-mers) to generate amplicons from all sequenced viruses. We then designed primer sets separately for each viral family, and for several diverse species such as foot-and-mouth disease virus (FMDV), hemagglutinin (HA) and neuraminidase (NA) segments of influenza A virus, Norwalk virus, and HIV-1. We empirically demonstrated the application of the software with a multiplex set of 16 short (10 nt) primers designed to amplify the Poxviridae family to produce a specific amplicon from vaccinia virus.
BIFS node for intergration of MPEG-4 with other applications including the web (1999)

A 78-year-old woman was operated on with a diagnosis of oozing-type cardiac rupture after an acute anteroseptal myocardial infarction. Pericardial drainage was performed and hemostasis was obtained by dressing with local hemostatics. As hemodynamics improved, elevation of pulmonary artery pressure and a step-up in oxygen concentration in the pulmonary artery from a Swan-Ganz catheter sample appeared. A left-to-right shunt was observed in the operative field with color Doppler echocardiography and a diagnosis of ventricular septal perforation (VSP) was made. Subsequently, intracavitary repair with two sheets of equine pericardial patch, sutured using interrupted mattress sutures with felt pledgets, was performed. Her early course after operation was satisfactory in spite of a small residual shunt. However, thirty-one days later she was returned to surgery because of an increasing residual shunt. Looseness of several interrupted mattress sutures and thrombus adherent to the internal surface of the pericardial patch were observed. The thrombus was removed and the patch was reattached using both interrupted mattress sutures with felt pledgets and continuous suture. She had an uneventful recovery thereafter. As double rupture is not a rare complication after myocardial infarction, a careful hemodynamic examination is necessary and important in the diagnosis and treatment of cardiac rupture. We consider that interrupted mattress sutures are a better technique for early repair of the VSP to reduce a risk of residual shunt due to the weakness and unclear border of infarcted myocardial tissue, and continuous suture is acceptable to repair the VSP 3 to 4 weeks later after infarction. Long-term anticoagulant therapy is necessary after intracavitary repair using equine pericardial patch.