gebhart/patrepeval huggingface dataset:
A Compositive Diagnosis Method on Turbine-Generator Rotor Winding Inter-turn Short Circuit Fault (2006)

Generator vibration characteristic and electric characteristic are analyzed when the rotor winding inter-turn short circuit fault has happened. First, the generator parameters of air-gap magnetomotive force, air-gap magnetic permeability and magnetic flux density on the fault are calculated, and the frequency characteristic of imbalance pull acting on rotor and that of pulsating magnetic pull acting on stator core are analyzed, then the rotor and stator radial vibration characteristics are gotten, which are that rotor vibration of fundamental frequency will increase, and stator vibration of second power frequency will decrease for one pair of poles generator. Next, the electric characteristic is analyzed, which is that the second harmonics circulating current between the stator winding parallel branches will increase when the fault occurs. Synthetically considering the vibration and circulating current characteristics, a method of the rotor winding inter-turn short circuit fault diagnosis, based on compositive characteristics of generator vibration and stator current, is developed. Finally, the vibration and circulating current of a type SDF-9 generator is measured in the laboratory to verify the theoretical analysis presented above.
Design of Stereospecific Inhibitors for Crystal Dissolution (1988)

Abstract A new class of monomeric and polymeric crystal dissolution inhibitors has been prepared taking into consideration the packing arrangements and the morphologies of organic crystals. The efficiency of these inhibitors has been demonstrated by comparative morphological studies of α-glycine and by the kinetic resolution of the racemic conglomerates of his·HCl·H2O, threonine, glu·HCl, and 2,4-sec-phenethyl-3,5-dinitrobenzoate
COLLOIDAL PLATINUM CATALYSTS PREPARED BY HYDROGEN- AND PHOTO-REDUCTION IN THE PRESENCE OF SURFACTANT (1985)

Abstract Chloroplatinic acid in an aqueous solution was reduced by hydrogen molecules or photo-irradiation in the presence of surfactants to produce colloidal dispersions of platinum protected by the surfactants. The particles of the colloidal platinum prepared by photo-reduction were smaller in size and more narrowly dispersed than those prepared by hydrogen-reduction. They worked as highly active catalysts for hydrogenation of olefins.
Robust head pose estimation based on key frames for human-machine interaction (2020)

Abstract Humans can interact with several kinds of machine (motor vehicle, robots, among others) in different ways. One way is through his/her head pose. In this work, we propose a head pose estimation framework that combines 2D and 3D cues using the concept of key frames (KFs). KFs are a set of frames learned automatically offline that consist the following: 2D features, encoded through Speeded Up Robust Feature (SURF) descriptors; 3D information, captured by Fast Point Feature Histogram (FPFH) descriptors; and target’s head orientation (pose) in real-world coordinates, which is represented through a 3D facial model. Then, the KF information is re-enforced through a global optimization process that minimizes error in a way similar to bundle adjustment. The KF allows to formulate, in an online process, a hypothesis of the head pose in new images that is then refined through an optimization process, performed by the iterative closest point (ICP) algorithm. This KF-based framework can handle partial occlusions and extreme rotations even with noisy depth data, improving the accuracy of pose estimation and detection rate. We evaluate the proposal using two public benchmarks in the state of the art: (1) BIWI Kinect Head Pose Database and (2) ICT 3D HeadPose Database. In addition, we evaluate this framework with a small but challenging dataset of our own authorship where the targets perform more complex behaviors than those in the aforementioned public datasets. We show how our approach outperforms relevant state-of-the-art proposals on all these datasets.
The Unique N-Terminus of R-Ras Is Required for Rac Activation and Precise Regulation of Cell Migration (2005)

The Ras family GTPase, R-Ras, elicits important integrin-dependent cellular behaviors such as adhesion, spreading and migration. While oncogenic Ras GTPases and R-Ras share extensive sequence homology, R-Ras induces a distinct set of cellular behaviors. To explore the structural basis for these differences, we asked whether the unique N-terminal 26 amino acid extension of R-Ras was responsible for R-Ras-specific signaling events. Using a 32D mouse myeloid cell line, we show that full-length R-Ras activates Rac and induces Rac-dependent cell spreading. In contrast, truncated R-Ras lacking its first 26 amino acids fails to activate Rac, resulting in reduced cell spreading. Truncated R-Ras also stimulates more beta3 integrin-dependent cell migration than full-length R-Ras, suggesting that the N-terminus may negatively regulate cell movement. However, neither the subcellular localization of R-Ras nor its effects on cell adhesion are affected by the presence or absence of the N-terminus. These results indicate that the N-terminus of R-Ras positively regulates specific R-Ras functions such as Rac activation and cell spreading but negatively regulates R-Ras-mediated cell migration.
Experimental results of an AMC antenna fabricated with a magnetically-loaded elastomeric substrate (2008)

Experimental results are shown for low profile bent-wire monopole antennas fabricated on artificial magnetic conductors (AMCs) that contain homogeneous magnetically-loaded elastomeric substrates. The elastomeric substrate is a lower cost and lighter weight alternative to the use of ferrite tiles. A 900 MHz antenna with a 20% return loss bandwidth and 40% antenna efficiency is described.
Boron removal from water and wastewater using new polystyrene-based resin grafted with glycidol (2015)

A divinylbenzene cross-linked polystyrene resin with amine functional groups (Purolite A170) was grafted with glycidol and characterized as a novel sorbent, GLY-resin, for the oxoborate removal from model solutions and post-crystallization lye. The sorption behavior of GLY-resin was investigated using a batch system. The results showed that the sorption was maximal at pH=9.5. The equilibrium was achieved after 24 h. Calculations based on Langmuir model show the monolayer sorption capacity qm=1.3 mg/g and the fitted experimental data chemisorption as a dominating mechanism of boron sorption on GLY-resin. Boron removal from the solution containing 5 mg B/L and post-crystallization lye having a 9.1 mg B/L was 99% and 80% respectively. The thermodynamic calculations indicated the spontaneous and endothermic nature of the sorption process. The pseudo-second-order model adequately described the boron sorption on GLY-resin. Sorption−desorption efficiency was 100%, which means the boron sorption at next cycle did not decrease.
Acute lymphoblastic leukemia with the 4;11 translocation exhibiting early T cell features. (1989)

We describe a case of ALL with the t(4;11) (q21;q23) translocation in which both surface markers and molecular analyses suggest an unusual early T cell involvement. While the morphologic and cytochemical studies showed an undifferentiated pattern, immunophenotypic data were suggestive of a very immature cell population which stained only for TdT and CD7. Moreover, in contrast to previous reports but in agreement with the immunologic findings, the IgH gene region retained a germline configuration. T cell receptor beta and gamma chain gene loci also showed a germline pattern, in accordance with the expansion of immature CD7+, TdT+ T cells.
Hydroxylation of linear alkanes catalysed by iron porphyrins: particular efficacy and regioselectivity of perhalogenated porphyrins (1991)

Iron porphyrins containing perhalogenated pyrroles are found to be much better catalysts for the hydroxylation of poorly reactive alkanes like pentane or heptane by PhIO (yields as high as 80%) than the corresponding iron porphyrins without halogens on the pyrrole rings; the chemoselectivity and regioselectivity of the oxidations are found to vary very much with the presence of pyrrole halogens suggesting a dramatic change in the structure of the oxygenating iron-oxo species.
The Economy of Redundancy in Wireless Multi-Hop Networks (2009)

Due to frequent link failures in multi-hop wireless networks, redundancy can be an important feature. For example, when planning the structure of a backhaul mesh network for public access, it is common to introduce redundant nodes in the mesh network. These are called redundant, because they do not increase the network capacity under normal operation, due to the shortest-path metric of the routing protocol. Instead, their sole purpose is to increase the network reliability by providing failover links when a link in the shortest-path fails. This paper shows how to estimate the optimal number of redundant nodes for a given topology. In order to do so, a method to calculate the additional network reliability that results from introducing a redundant node to a given topology is also proposed.
A UWB filter with tunable notch using microstrip/slotline structure with T-slot stub (2016)

This paper presents design of wide-band bandpass filter with tunable notch response for wireless communication system. The transmission line model is composed of two sets of series open-ended and short-ended stubs that are connected through transmission line, then a short-circuited stub is added. Based on transmission line model, a T-slot stub with microstrip/slotline structure is used to design this filter. Notch frequency can tuned from 4 GHz to 9 GHz by varying the length of T-slot stub. The center frequency is fixed at 6.75 GHz and has absolute bandwidth 8.3 GHz. The band has more than 30 dB rejection in simulation.
Developmental data on individuals with the Brachmann‐de Lange syndrome (1993)

One hundred twenty-two patients with clinically confirmed Brachmann-de Lange syndrome (BDLS) were evaluated developmentally. Recruitment was made from our genetics department and through meetings of the Cornelia de Lange Syndrome Foundation parent support group. Developmental information was obtained from records of physicians, schools and developmental centers, or from parents on each of the 122 individuals, allowing division into four groups for study: group 1 (n = 48) underwent formal developmental assessments, which generated intelligence or developmental quotients, and had a completed parental questionnaire with specific developmental questions regarding ages of skills mastered; group II (n = 23) had additional developmental records available without formal testing, as well as the questionnaire; group III (n = 22) had only a completed questionnaire; and group IV (n = 29) had formal developmental testing or other developmental records but no available questionnaire. These data were analyzed in order to be able to predict attainable psychomotor development. Average scores on formal testing were found to be in the mild to moderate level of mental retardation, ranging from below 30 to 85, with an average intelligence quotient of 53, higher than previously reported. Visual-spatial memory and perceptual organization skills were found to be strengths. Younger individuals born before 1980 demonstrated higher scores on testing. Early intervention appears to play a major role in the level of developmental achievement.
UKCCCR multicentre randomised controlled trial of one and two view mammography in breast cancer screening (1995)

Two view mammography is medically more effective than one view; it detects more cancers and reduces recall rates; it is also similarly cost effective financially.
Clarifying the Mechanism of the Denisov Cycle: How do Hindered Amine Light Stabilizers Protect Polymer Coatings from Photo-oxidative Degradation? (2010)

Hindered amine light stabilizers (HALS) protect polymer coatings against photo-oxidative damage through the formation of nitroxide radicals, which subsequently consume damaging radical species in a process called the Denisov cycle. However, the exact mechanism for this process has been disputed, with a dozen different reaction pathways and over 30 individual reactions previously proposed in the literature. In this work, the full mechanism of the Denisov cycle is elucidated using high-level computational techniques for two different polymer systems. New intermediate species in the cycle have been postulated, and the final products determined. The nitroxide TEMPO can react either with the polymeric radical •R to form an alkoxyamine species >N−OR, with any available alkoxyl radicals •OR to form the oxyaminoether species >N+(O−)−OR, or (more slowly) with the peroxyl radical •OOR to form the trioxide species >N−O−O−O−R. The alkoxyamine goes on to react with the peroxyl radical reforming the nitroxide along with ketone and alcohol products via a caged oxyaminoether and alkoxyl radical intermediate for polyethylene, and via either a caged oxyaminoether and alkoxyl radical intermediate or a caged aminoperoxylether and alkoxyl radical intermediate for polyester. The oxyaminoether undergoes an intramolecular hydrogen transfer reaction to form a hydroxylamine >N−OH and a ketone. The trioxide goes on to react with a secondary alcohol to form a hydroxylamine, a ketone and a hydroperoxide species via a concerted mechanism involving a six-membered ring transition state. The hydroxylamine species is then converted back to the corresponding nitroxide through hydrogen transfer to an alkyl, alkoxyl or peroxyl radical. A possible side reaction, reforming a HALS-type amine occurs through hydrogen donation to the aminyl radical product of the direct decomposition of the trioxide species into aminyl and hydroxyl radicals and dioxygen. This study will assist in the design of new and improved hindered amine light stabilizers for surface coatings.
Phytoremediation of Mercury- and Methylmercury-Polluted Soils Using Genetically Engineered Plants (1998)

Inorganic mercury in contaminated soils and sediments is relatively immobile, though biological and chemical processes can transform it to more toxic and bioavailable methylmercury. Methylmercury is neurotoxic to vertebrates and is biomagnified in animal tissues as it is passed from prey to predator. Traditional remediation strategies for mercury contaminated soils are expensive and site-destructive. As an alternative we propose the use of transgenic aquatic, salt marsh, and upland plants to remove available inorganic mercury and methylmercury from contaminated soils and sediments. Plants engineered with a modified bacterial mercuric reductase gene, merA, are capable of converting Hg(II) taken up by roots to the much less toxic Hg(0), which is volatilized from the plant. Plants engineered to express the bacterial organo-mercurial lyase gene, merB, are capable of converting methylmercury taken up by plant roots into sulfhydryl-bound Hg(II). Plants expressing both genes are capable of converting ionic mercury and methylmercury to volatile Hg(0) which is released into an enormous global atmospheric Hg(0) pool. To assess the phytoremediation capability of plants containing the merA gene, a variety of assays were carried out with the model plants Arabidopsis thaliana, and tobacco (Nicotiana tabacum).
Development of zinc ferrite sorbents for desulfurization of hot coal gas in a fluid-bed reactor (1992)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDevelopment of zinc ferrite sorbents for desulfurization of hot coal gas in a fluid-bed reactorR. Gupta, S. K. Gangwal, and S. C. JainCite this: Energy Fuels 1992, 6, 1, 21–27Publication Date (Print):January 1, 1992Publication History Published online1 May 2002Published inissue 1 January 1992https://pubs.acs.org/doi/10.1021/ef00031a004https://doi.org/10.1021/ef00031a004research-articleACS PublicationsRequest reuse permissionsArticle Views407Altmetric-Citations76LEARN 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
A Simulation-Based Soft Error Estimation Methodology for Computer Systems (2006)

This paper proposes a simulation-based soft error estimation methodology for computer systems. Accumulating soft error rates (SERs) of all memories in a computer system results in pessimistic soft error estimation. This is because memory cells are used spatially and temporally and not all soft errors in them make the computer system faulty. Our soft-error estimation methodology considers the locations and the timings of soft errors occurring at every level of memory hierarchy and estimates the soft errors of the whole system using instruction-set simulation. Our experiment demonstrates that the reliability of computer systems depends on not only SERs of memories but also the behavior of software running on the systems.
Remote mobile test system: a mobile phone cloud for application testing (2012)

It is difficult to enable a mobile application to work as expected on so many mobile phones currently on the market. Most of development teams may not have so many testing phones because of limited budgets, but the applications have to be launched on time under market pressure. In this paper, we present Remote Mobile Test System (RMTS), which is aimed at reducing the cost of buying many mobile phones, improving mobile application testing efficiency and helping ensure mobile application quality and reliability. Users could access a real mobile phone remotely and operate them through a web browser, including uploading, startup, and testing mobile applications by clicking and swiping actions. The mobile phones could be geographically distributed. The operation process could be recorded as automated testing scripts and to be run on other mobile phones to improve testing efficiency. The proposed system is soft-link based that causes lower cost and to deploy a new phone quickly.
Surface Motility of <i>Serratia liquefaciens</i> MG1 (1999)

The view of bacteria as unicellular organisms has strong roots in the traditional way of culturing bacteria in liquid medium. Although studies of bacterial activities during conditions of balanced growth have lead to insight into basic life processes and have unraveled complex regulatory networks,
Proposed solar-furnace study of zinc sulfate decomposition (1981)

A solar furnace study of zinc sulfate is proposed. In this study the advantages of the high temperatures and rapid heating rates provided by solar collectors for the decomposition of zinc sulfate will be investigated. The use of a rotary kiln designed to improve the efficiency in working with solids that have low absorbtivities, such as solid sulfates, is planned. The overall goal in this experiment is to establish the applicability of solar central receivers to thermochemical cycles that can use solid state sulfate decomposition as the high temperature step. The ZnSO/sub 4/ subcycle presents a number of operational advantages over the direct decomposition of H/sub 2/SO/sub 4/ in the thermochemical process of hydrogen production from water. For instance, the cycle efficiency should increase due to reducing the heat requirements for evaporating water in the sulfuric acid concentration step. Also, a number of severe materials problems will be avoided for heat exchangers required to concentrate, boil, and decompose sulfuric acid. Furthermore, zinc sulfate lends itself well to coupling with solar central receivers, an alternative energy source which may introduce several additional advantages to sulfate-based thermochemical cycles.
A DC Offset Current Compensation Strategy in Transformerless Grid-Connected Power Converters (2011)

A line frequency transformer is usually employed in grid-connected power converters, from both renewable and traditional energy sources, in order to suppress the DC current component and the ground leakage current. Solutions employing a high frequency transformer or employing no transformer at all have recently been investigated in order to reduce size, weight and cost. As a consequence, unless a suitable remedy is adopted, a DC current component exceeding the limits enforced by international standards may be injected into the grid. This paper proposes a simple and cheap solution to reduce the DC current component injected into the grid in the case of a full-bridge, single-phase, transformerless converter. The proposed strategy is intrinsically insensitive to offset measurement errors and can be utilized as a robust and dynamic offset compensator for the current transducer. The simulation results have confirmed the theoretical behavior of the proposed solution, while the experimental ones, performed for different values of output power and for different current control architectures, have shown its effectiveness.
Conformational stability, size, shape and surface of protein molecules (2007)

Preface Conformational Stability Heat Capacity Microcalorimetry in Studying the Energetic bases of Proteins and their Complexes Differential Scanning Microcalorimetry in the Study of Protein Folding Isothermal Titration Calorimetry The Origin and Measurement of Protein Conformational Stability Role of Electrostatic Interactions in the Stabilisation of Thermophilic Proteins Study of Irreversible Thermal Denaturation of Proteins by Differential Scanning Calorimetry Analysing Protein Stability by Transverse Urea Gradient Electrophoresis, TUG-PAGE Photothermal Studies of PH Induced Folding/unfolding of Proteins Size, Shape and Surface of Protein Molecules Neutron Scattering from Solutions of Biological Macromolecules Analytical Ultracentrifugation. State of the Art and Perspectives Size-exclusion Chromatography in Protein Structure Analysis Dynamic and Static Light Scattering of Proteins Tritium Planigraphy of Biological Macromolecules Studies of Protein Solution Conformations Using Viscometric Measurements Index.
Kinetics of initiation of the third generation Grubbs metathesis catalyst: convergent associative and dissociative pathways (2019)

The kinetics of the nominally irreversible reaction of the third generation Grubbs catalyst G-III-Br (4.6 μM) with ethyl vinyl ether (EVE) in toluene at 5 °C have been re-visited. There is a rapid equilibrium between the bispyridyl form of G-III-Br, 1, and its monopyridyl form, 2 (K ≈ 0.001 M). The empirical rate constants (kobs.) for the reaction with EVE, determined UV-vis spectrophotometrically under optimised anaerobic stopped-flow conditions, are found by testing the quality of fit of a series of steady-state approximations. The kinetics do not correlate with solely dissociative or associative pathways, but do correlate with a mechanism where these pathways converge at an alkene complex primed to undergo metathesis. In the presence of traces of air there is a marked increased in the rate of decay of G-III-Br due to competing oxidation to yield benzaldehyde; a process that appears to be very efficiently catalysed by trace metal contaminants. The apparent acceleration of the initiation process may account for the rates determined herein being over an order of magnitude lower than previously estimated.