gebhart/patrepeval huggingface dataset:
[The state of hygienic training of the workers occupied in the area of public catering: a sociological survey]. (2010)

The outcomes of a survey research completed in the workers of public catering facilities in two large cities of the Russian Federation are presented which show that the system of hygienic training for this occupational group of the population needs updating. This includes improving the programs and teaching and learning materials, as well as developing criteria for evaluating the effectiveness of educational activities in the field of occupational hygienic education and training.
Magnetic Field Control of Exchange and Noise Immunity in Double Quantum Dots (2008)

We employ density functional calculated eigenstates as a basis for exact diagonalization studies of semiconductor double quantum dots, with two electrons, through the transition from the symmetric bias regime to the regime where both electrons occupy the same dot. We calculate the singlet-triplet splitting J(epsilon) as a function of bias detuning epsilon and explain its functional shape with a simple, double anticrossing model. A voltage noise suppression "sweet spot," where d J(epsilon)/d(epsilon) = 0 with nonzero J(epsilon), is predicted and shown to be tunable with a magnetic field B.
Directional water-transfer through fabrics induced by asymmetric wettability (2010)

Fabrics having an interesting unidirectional water-transfer effect have been prepared by a special coating technique to create a wettability gradient across the fabric thickness, and the treated fabrics also show considerably different breakthrough pressures on the two fabric sides.
A context-aware assistance system for maintenance applications in smart factories based on augmented reality and indoor localization (2015)

The term Industrie 4.0 carries the vision of smart factories, which automatically adapt to changes and assist the human as much as possible during operation and maintenance. This includes smart human machine interfaces, which reduce the chances of errors and help to make the right decisions. This paper presents an approach to equip the maintenance software running on a tablet PC with augmented reality functionality to be able to place virtual sticky notes at production modules. Additionally, these sticky notes are enriched with position information. The central element of this approach is an ontology-based context-aware framework, which aggregates and processes data from different sources. As a result, a tablet PC application was implemented, which allows displaying maintenance information as well as live plant process data in the form of augmented reality. More than 100 of those sticky notes can be placed using this system, whereas each note requires a file size of 12 to 16 kilo bytes. After placing a sticky note, the system recognizes it even if the camera's position is not exactly the same as during the placing process.
Elucidating the Dynamic Nature of Fuel Cell Electrodes as a Function of Conditioning: An ex Situ Material Characterization and in Situ Electrochemical Diagnostic Study (2019)

To increase the commercialization of fuel cell electric vehicles, it is imperative to improve the activity and performance of electrocatalysts through combined efforts focused on material characterization and device-level integration. Obtaining fundamental insights into the ongoing structural and compositional changes of electrocatalysts is crucial for not only transitioning an electrode from its as-prepared to functional state, also known as "conditioning", but also for establishing intrinsic electrochemical performances. Here, we investigated several oxygen reduction reaction (ORR) electrocatalysts via in situ and ex situ characterization techniques to provide fundamental insights into the interfacial phenomena that enable peak ORR mass activity and high current density performance. A mechanistic understanding of a fuel cell conditioning procedure is described, which encompasses voltage cycling and subsequent voltage recovery (VR) steps at low potential. In particular, ex situ membrane electrode assembly characterization using transmission electron microscopy and ultra-small angle X-ray scattering were performed to determine changes in carbon and Pt particle size and morphology, while in situ electrochemical diagnostics were performed either during or after specific points in the testing protocol to determine the electrochemical and interfacial changes occurring on the catalyst surface responsible for oxygen transport resistances through ionomer films. The results demonstrate that the voltage cycling (break-in) step aids in the removal of sulfate and fluoride and concomitantly reduces non-Fickian oxygen transport resistances, especially for catalysts where Pt is located within the pores of the carbon support. Subsequent low voltage holds at low temperature and oversaturated conditions, i.e., VR cycles, serve to improve mass activities by a factor of two to three, through a combined removal of contaminants, surface-blocking species (e.g., oxides), and rearrangement of the catalyst atomic structure (e.g., Pt-Pt and Pt-Co coordination).
"Stylists of the Beautiful Life": Secession Artists and Fashion in Fin-de-Siècle Vienna (2012)

Beginning in the 1870s, a far reaching call for reform spread across the Viennese middle class, infiltrating every field of interest from politics, to literature, eventually culminating in the 1890s in an extensive redefinition of the visual arts. From this nationwide sense of dissatisfaction toward the traditional flowed a new understanding of what was to be considered socially acceptable in the realm of art and architecture. This article attempts to not only identify the significant influence that revolutionary Viennese artists (including members of the Secession movement: Klimt, Hoffmann, and Moser, the Wiener Werkstätte, and architect Adolf Loos) had on early twentieth century fashion, but also to emphasize the distinction between mere clothing and the Viennese’s apt manipulation of fashion as art.
Editing reality made easy (2017)

Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2017.
A new method to compensate current transformer using microprocessors (1991)

The authors present a new method to compensate the errors of current transformers by using a microprocessor. The microprocessor is programmed to supply, according to the magnetising curve and the magnetic potential, current which would otherwise come from the primary current. It can thereby effectively reduce current transformer errors. With this method, the effect of compensation is not affected by changes in the primary current or the load. Current transformers for 10 to 220 kV power systems can be improved from the national standard grade 0.5 to 0.1.
O6-Ethylguanine carcinogenic lesions in DNA: an NMR study of O6etG.cntdot.C pairing in dodecanucleotide duplexes (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTO6-Ethylguanine carcinogenic lesions in DNA: an NMR study of O6etG.cntdot.C pairing in dodecanucleotide duplexesMatthew W. Kalnik, Benjamin F. L. Li, Peter F. Swann, and Dinshaw J. PatelCite this: Biochemistry 1989, 28, 15, 6182–6192Publication Date (Print):July 25, 1989Publication History Published online1 May 2002Published inissue 25 July 1989https://pubs.acs.org/doi/10.1021/bi00441a009https://doi.org/10.1021/bi00441a009research-articleACS PublicationsRequest reuse permissionsArticle Views67Altmetric-Citations26LEARN 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
Corrosion Protection by Calcite-Type Coatings (1989)

Abstract : The shipbuilding industry has directed much effort toward ways of limiting escalating coating costs. Of special concern with respect to increasing coating costs are segregated seawater ballast tanks. The use of a calcite-type coating instead of a traditional organic-type maintenance coating represents a possible alternative approach for controlling corrosion in the segregated tanks with a substantial savings in cost. As a result, National Steel and Shipbuilding Company acting on behalf of the Maritime Administration under the National Shipbuilding Research Program authorized the Ocean City Research Corporation to undertake a laboratory study which continued previous investigations of the feasibility of applying calcite-type coatings to segregated ballast tanks. The testing was intended to demonstrate and quantify the long-term corrosion protection afforded by the calcite coatings. The laboratory tests demonstrated that well developed calcite films can reduce the corrosion rate of steel in a seawater ballast tank. Furthermore, calcite films can reduce the cathodic protection current demand required for corrosion control by a factor of five. However, the testing also showed that calcite films will deteriorate with time upon continued exposure to seawater. Thus, such films would have to be periodically reformed given the contemplated approach.
Hybrid EEG-EOG brain-computer interface system for practical machine control (2010)

Practical issues such as accuracy with various subjects, number of sensors, and time for training are important problems of existing brain-computer interface (BCI) systems. In this paper, we propose a hybrid framework for the BCI system that can make machine control more practical. The electrooculogram (EOG) is employed to control the machine in the left and right directions while the electroencephalogram (EEG) is employed to control the forword, no action, and complete stop motions of the machine. By using only 2-channel biosignals, the average classification accuracy of more than 95% can be achieved.
Novel Lead-Walled Straw PET Detector for Specialized Imaging Applications (2006)

This project pursues development of PET cameras for specialized imaging applications such as small animal and breast imaging through a novel approach using low-cost, lead walled straw (LWS) modules. A 50 cmtimes4.4 cmtimes1.9 cm LWS module has been developed which operates at high singles rates, achieves 3.3 mm longitudinal resolution, and implements full 3D position decoding with inexpensive efficient electronics. The long linear module geometry together with full 3D position decoding affords use of a novel PET detector geometry consisting of two closely spaced long modules essentially in contact with the imaged object. This unique geometry provides efficiency through coverage of a very large solid angle and also a very large longitudinal field of view using a small number of coincidence modules
Spatial Laplace transform for complex wavenumber recovery and its application to the analysis of attenuation in acoustic systems (2016)

We present a method for the recovery of complex wavenumber information via spatial Laplace transforms of spatiotemporal wave propagation measurements. The method aids in the analysis of acoustic attenuation phenomena and is applied in three different scenarios: (i) Lamb-like modes in air-saturated porous materials in the low kHz regime, where the method enables the recovery of viscoelastic parameters; (ii) Lamb modes in a Duralumin plate in the MHz regime, where the method demonstrates the effect of leakage on the splitting of the forward S1 and backward S2 modes around the Zero-Group Velocity point; and (iii) surface acoustic waves in a two-dimensional microscale granular crystal adhered to a substrate near 100 MHz, where the method reveals the complex wavenumbers for an out-of-plane translational and two in-plane translational-rotational resonances. This method provides physical insight into each system and serves as a unique tool for analyzing spatiotemporal measurements of propagating waves.
Experimental and Numerical Characterization of the Stress-Strain Behavior of Weak Sandstone Formations for Sanding Assessment (2018)

In this study an extensive experimental program has been carried out in order to characterize the mechanical behavior of two weak sandstone formations of an offshore field for application to sand production modeling. The experimental tests included Scratch tests, Triaxial tests and Advanced thick wall cylinder tests (ATWC) where the sand production initiation and the cumulative sand produced were registered. Numerical simulations of experimental tests were then performed using an advanced elasto-plastic constitutive model. Triaxial tests simulations allowed calibrating the constitutive model parameters. These parameters were employed for the numerical simulation of the ATWC in order to determine the equivalent plastic strain threshold required to the onset of sand production observed in laboratory for sanding assessment. Results obtained highlight the importance to use a realistic representation of the rock behavior focusing on post-yield behavior in order to build confidence in model predictions.
Delayed Release of Inorganic Phosphate from Elongation Factor Tu Following GTP Hydrolysis on the Ribosome (2006)

The dissociation of inorganic phosphate (P(i)) following GTP hydrolysis is a key step determining the functional state of many GTPases. Here, the timing of P(i) release from elongation factor Tu (EF-Tu) and its implications for the function of EF-Tu on the ribosome were studied by rapid kinetic techniques. It was found that P(i) release from EF-Tu is >20-fold slower than GTP cleavage and limits the rate of the conformational switch of EF-Tu from the GTP- to the GDP-bound form. The point mutation Gly94Ala in the switch 2 region of EF-Tu abolished the delay in P(i) release, suggesting that P(i) release is controlled by the mobility of the switch 2 region with Gly94 acting as a pivot. The rate of P(i) release or the conformational switch of EF-Tu does not affect the selection of aminoacyl-tRNA on the ribosome. Rather, the slow P(i) release may be a consequence of the tight interaction of the switch regions of EF-Tu with the gamma-phosphate and the ribosome in the GTPase activated state of the factor.
Integrating TiO<sub>2</sub> Nanoparticles within a Catecholic Polymeric Network Enhances the Photoelectrochemical Response of Biosensors (2019)

Development of ultrasensitive biosensors for monitoring biologically relevant analytes is the key to achieving point-of-care diagnostics and health-monitoring devices. Photoelectrochemical readout, combining photonic excitation with electrochemical readout, is envisioned to enhance the limit of detection of biosensors by increasing their sensitivity and reducing background currents generated in biological samples. In spite of this, the functionalization of photoelectrochemical transducers with biorecognition elements significantly reduces the baseline current and signal-to-background ratio of these devices. Additionally, the stability of photoactive electrodes created using photoactive nanomaterial assemblies is often insufficient for withstanding multiple washing and potential cycling steps that are involved in biosensing protocols. To overcome these challenges, we created an effective conjugation strategy for integrating TiO2 nanoparticles into photoactive electrodes. This strategy involves two components that work synergistically to increase the photoelectrochemical current of the transducers. The catechol-containing molecule, 3,4-dihydroxybenzaldehyde (DHB), is used to enhance the electronic and optical properties of TiO2 nanoparticles for signal generation. Chitosan (CHIT) is used to enhance the film-forming properties of the DHB-conjugated TiO2 nanoparticles to form uniform and stable films. Together, DHB and CHIT resulted in the formation of an extensive network of TiO2 nanoparticles within the DHB–CHIT matrix and enhanced the generated photocurrent by a factor of 10. We modified the optimized photoelectrode with DNA probes to create a photoelectrochemical DNA detector. The TiO2–DHB–CHIT photoelectrodes offered the required stability and signal magnitude to distinguish between complementary and noncomplementary DNA sequences, paving the route toward photoelectrochemical DNA sensing.
Growth factor control of pancreatic islet regeneration and function (2008)

Type 1 and type 2 diabetes mellitus together are predicted to affect over 300 million people worldwide by the year 2020. A relative or absolute paucity of functional β-cells is a central feature of both types of disease, and identifying the pathways that mediate the embryonic origin of new β-cells and mechanisms that underlie the proliferation of existing β-cells are major efforts in the fields of developmental and islet biology. A poor secretory response of existing β-cells to nutrients and hormones and the defects in hormone processing also contribute to the hyperglycemia observed in type 2 diabetes and has prompted studies aimed at enhancing β-cell function. The factors that contribute to a greater susceptibility in aging individuals to develop diabetes is currently unclear and may be linked to a poor turnover of β-cells and/or enhanced susceptibility of β-cells to apoptosis. This review is an update on the recent work in the areas of islet/β-cell regeneration and hormone processing that are relevant to the pathophysiology of the endocrine pancreas in type 1, type 2 and obesity-associated diabetes.
A CMOS imager hybridized to an avalanche multiplied film (1997)

A highly sensitive solid-state imager has been made by connecting an avalanche multiplier film to a MOS readout circuit through microbump electrodes. Optimization of the vapor-deposition conditions for the indium bump material made it possible for microbumps 5 /spl mu/m in diameter and 5 /spl mu/m in height to be formed into a 2/3-in matrix array of 380 000 pixels. A prototype imager was constructed with a 0.5-/spl mu/m thick avalanche photoconductive film. Clear avalanche multiplication of about ten times was observed at an applied voltage of 75 V. The imager had a good resolution and no recognizable afterimages.
Stealth Transmission of Time-Domain Spectral Phase Encoded OCDMA Signal Over WDM Network (2010)

Security enhancement of stealth channel by combining time-domain spectral phase en/decoding (SPE/D) OCDMA scheme and group velocity dispersion is proposed and experimentally demonstrated. The time-domain spectral phase encoded OCDMA signal, which utilizes a linearly chirped fiber Bragg grating for pulse broadening and a high-speed phase modulator for SPE, has been stealth transmitted over a public wavelengthdivision-multiplexing network. Error-free transmission (bit-error rate <; 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-9</sup> ) has been achieved for both the public and stealth channel with 32-chip 40-Gchip/s gold codes.
Multiple-channel multicast scheduling for scalable bulk-data transport (1999)

A key technique for allowing servers to handle a large volume of requests for file transfers is to multicast the data to the set of requesting clients. Typically the paths from the server to the clients will be heterogeneous in bandwidth availability. Multiple-channel multicast (MCM) is an approach that can be used to handle this heterogeneity. In this approach the data is multicast over multiple channels, each addressed as a separate multicast group. Each receiver subscribes to a set of channels (i.e., joins the corresponding multicast groups) commensurate with its own rate capabilities. Of particular interest in the design of MCM schemes is the scheduling of data transmission across the multiple channels to accommodate asynchronous requests from clients. In this paper we present and analyze a new multiple-channel multicast approach called partition organization scheduling. The scheme is designed to result in good reception efficiency when compared to existing proposals while improving on their performance when other measures of interest are considered.
Auditory cueing in Parkinson's patients with freezing of gait. What matters most: Action-relevance or cue-continuity? (2016)

Gait disturbances are a common feature of Parkinson's disease, one of the most severe being freezing of gait. Sensory cueing is a common method used to facilitate stepping in people with Parkinson's. Recent work has shown that, compared to walking to a metronome, Parkinson's patients without freezing of gait (nFOG) showed reduced gait variability when imitating recorded sounds of footsteps made on gravel. However, it is not known if these benefits are realised through the continuity of the acoustic information or the action-relevance. Furthermore, no study has examined if these benefits extend to PD with freezing of gait. We prepared four different auditory cues (varying in action-relevance and acoustic continuity) and asked 19 Parkinson's patients (10 nFOG, 9 with freezing of gait (FOG)) to step in place to each cue. Results showed a superiority of action-relevant cues (regardless of cue-continuity) for inducing reductions in Step coefficient of variation (CV). Acoustic continuity was associated with a significant reduction in Swing CV. Neither cue-continuity nor action-relevance was independently sufficient to increase the time spent stepping before freezing. However, combining both attributes in the same cue did yield significant improvements. This study demonstrates the potential of using action-sounds as sensory cues for Parkinson's patients with freezing of gait. We suggest that the improvements shown might be considered audio-motor 'priming' (i.e., listening to the sounds of footsteps will engage sensorimotor circuitry relevant to the production of that same action, thus effectively bypassing the defective basal ganglia).