gebhart/patrepeval huggingface dataset:
High-Temperature Organic Rankine Cycle Utilizing Novel Scroll Expander and Pump (2021)

Organic Rankine Cycles (ORC) are widely employed to extracting work from different heat sources to improve the operational efficiency of thermal systems. High-temperature ORCs (> 250 – 300 °C) are still particularly challenging especially when hydrocarbons cannot be used as the working fluids. Generators for Small Electric and Thermal Systems (GENSETs) are one example of systems where ORCs can be used as a bottoming cycle. A 1 kWe ORC has been previously constructed to evaluate the feasibility of designing an ORC with a heat source inlet temperature of approximately 500 °C. The test stand utilizes microtube evaporator, an air-cooled microchannel condenser, a plate heat exchanger as regenerator, scroll rotating machines as both expander and pump. To increase the efficiency of the ORC, novel scroll pump design and Oldham Ring scroll expander were installed. An extensive experimental campaign was carried out to map the performance of the expander and the pump along with the overall system performance using R245fa as the working fluid. In addition, thermocouple mesh has been inserted at the upstream and downstream of the evaporator to study the temperature maldistribution from the heat source. The performance was mapped at steady state over a range of operating conditions. The mapped performance has been used to develop a charge-sensitive dynamic model of the ORC system to be predict performance at off-design conditions and develop a control strategy. A discussion on the degradation of the lubricant oil in the system has also been included.
Sound quality in adult cochlear implant recipients using the HISQUI19. (2015)

The mean HISQUI19 score of the Dutch version in adult CI recipients was 64.9 (SD = 20.8), which corresponds to moderate sound quality. The psychometric characters of the Dutch questionnaire are similar to the characters of the original HISQUI19 questionnaire, emphasizing good internal consistency (α = 0.93) and construct validity. Moderate correlation was found with speech perception in quiet (r = 0.36, p < 0.01), speech perception in noise (r = 0.29, p < 0.05), CI aided Pure Tone Average (PTA0.5, 1, 2 and 4 kHz) of the subjects (r = 0.34, p < 0.01), and the age of the subject (r = 0.38, p < 0.01). Gender did not influence the experienced sound quality significantly. Furthermore, the relation to other questionnaires was found to be significantly strong (SSQ5: r = 0.68 and the APHAB: r = 0.64; p < 0.01).
Parallel concatenated codes with unequal error protection (1998)

We show how parallel concatenated codes (PCCs, also known as "turbo codes") can be endowed with unequal error protection (UEP). Given the two component encoders of the PCC encoder and the desired interleaver size, UEP is achieved by: (1) suitably positioning the different importance classes of information symbols into the encoder input frame; (2) puncturing the PCC redundancy symbols with a nonuniform pattern; and (3) choosing the interleaver of the PCC encoder in a class of interleavers that guarantees isolation of the importance classes. By controlling the amount of redundancy assigned to each importance class and the class positioning in the input frame, a whole family of UEP PCCs with different UEP levels can be obtained from the same component encoders and interleaver size. From a practical viewpoint, a family of UEP PCCs can be decoded by the same "turbo" iterative decoder, provided that the decoder hardware implementation allows for programmable puncturing and interleaving.
The SPEAR RF cavity characterization at Stanford Synchrotron Radiation Laboratory (2002)

At the SPEAR storage ring, the 3 GeV stored beam is driven by a five-cell /spl pi/-mode standing wave cavity operating at 358.54 MHz. The frequency tuning and the field balance between the cells are feedback controlled by movable tuners at the end cells. Another cavity of the same type in the ring can be powered for higher beam current in the future, but it is presently in a standby mode as a backup system. This idle cavity is also used to suppress the beam instability by manually positioning the tuners. For the purpose of cold tests, one PEP-I cavity is being prepared for the RF measurements.
Robotic Approaches to the Posterior Spine (2009)

The da Vinci could perform the major noninstrumented procedures of the posterior spine with improved ergonomics and control. Surgeon fatigue and tremor were reduced. With some modification of prototype and commercial instruments a posterior spine surgery instrument kit can be developed. Future clinical studies can better assess patient and surgeon benefits of using the da Vinci robot for posterior spine surgeries.
Dual Fuel CNG Retrofit for Mexican Public Transit (1995)

&lt;div class="htmlview paragraph"&gt;An open loop carbureted GM 5.7L engine has been converted to operate either as carburetor gasoline, or as a closed loop controlled compressed natural gas (CNG) fueled system. In the gasoline mode, fuel delivery is made through the stock four barrel carburetor, however, the stock mechanical advance ignition distributor has been replaced with later model utilizing electronically controlled spark advance. In the CNG fuel mode, stoichiometric fuel delivery is achieved with the use of two Servojet HSV injectors mounted in a central distribution center and controlled by a microprocessor. Closed loop control is obtained through the use of a stock GM heated gasoline oxygen sensor.&lt;/div&gt; &lt;div class="htmlview paragraph"&gt;In order to provide proper distribution of the CNG fuel with the intake air with the use of only two injectors, a constant flow multipoint injection system was developed to assure that each cylinder would receive equivalent masses of fuel. In this system, the fuel at 1.4 MPa absolute pressure first passes through the choked flow gas injectors into a central distribution plenum and is reduced to a minimum pressure of 0.7 MPa. The CNG fuel leaves the plenum through eight individual converging nozzles which direct the gas to each respective intake port. Tests demonstrate the systems ability to provide an even distribution of fuel to each intake port over a wide range of flow rates.&lt;/div&gt; &lt;div class="htmlview paragraph"&gt;The gasoline oxygen sensor employed in this study provides a lean biased signal when used to indicate stoichiometry in a CNG produced exhaust mixture. To correct this error on the feed back loop, the proportional-integral control algorithm was modified to correct for the true stoichiometric exhaust air-fuel ratio.&lt;/div&gt;
High Activity Enzyme Microcrystal Multilayer Films (2001)

ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTHigh Activity Enzyme Microcrystal Multilayer FilmsWen Jin, Xiangyang Shi, and Frank CarusoView Author Information Max Planck Institute of Colloids and Interfaces D-14424 Potsdam, Germany Cite this: J. Am. Chem. Soc. 2001, 123, 33, 8121–8122Publication Date (Web):July 27, 2001Publication History Received13 March 2001Revised13 June 2001Published online27 July 2001Published inissue 1 August 2001https://doi.org/10.1021/ja015807lCopyright © 2001 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views549Altmetric-Citations54LEARN 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 Read OnlinePDF (52 KB) Get e-AlertsSupporting Info (1)»Supporting Information Supporting Information SUBJECTS:Crystals,Layers,Peptides and proteins,Solubilization,Thin films Get e-Alerts
Mechanical properties of computer-aided design/computer-aided manufacturing resin composites assuming perfect silane coupling using in silico homogenization of cryo-electron microscopy images (2018)

A CAD/CAM resin composite model was successfully reconstructed from cryo-EM images, suggesting that the established image processing method is useful for producing dental restorative materials containing nano-fillers and for predicting homogenized mechanical properties. The homogenized mechanical properties indicated that the mechanical properties of the CAD/CAM RCB assumed perfect silane coupling between the fillers and resin matrix.
Monte Carlo study of diffusion phenomena in III - V modulation doped heterostructures (1997)

This paper presents a Monte Carlo study of diffusion coefficients in two-dimensional electron gas (TDEG) in III - V heterostructures. The model accounts for the quantization of all valleys and for non-parabolicity. The diffusion coefficients are determined by the spreading of a narrow pulse of carriers drifting along the interface. Two kinds of heterostructures have been considered: AlGaAs/InGaAs/AlGaAs and the AlInAs/InGaAs/AlInAs lattice matched on InP. The diffusion coefficient - field characteristics at 77 K temperature have been extensively studied. Large deviations from the Einstein relation have been observed, even at low-fields. The longitudinal diffusion coefficient is shown to be strongly field dependent and may reach high values for fields around . Its evolution is explained by the behaviour of scattering rates, especially for impurity and phonon scattering.
Alternative Under Frecuency Load Disconection Methodology Based on Semi-Adaptative Model (2020)

Stability analysis in electrical power systems is based on the study in dynamic state of the voltage and frequency, since at the moment that there is some contingency it fluctuates drastically due to the primary and secondary controls of the voltage and frequency to the power systems that act on the generators. In order to solve the possible stability problems that may arise in power systems, various techniques have been developed that act on the generating machines for their protection as well as on the loads for the power cut. The present investigation proposes an alternative methodology for load disconnection by low frequency as an option to save the power system from a possible blackout due to instability due to a fall in the frequency, managing to improve the results affected by other improved techniques, the frequency change range, frequency deviation and the effects of demand disconnection. The proposed methodology was tested in the IEEE 14 bus system.
Positive end-expiratory pressure redistributes perfusion to dependent lung regions in supine but not in prone lambs (1999)

PEEP redistributes pulmonary perfusion to dependent lung regions in supine, but not in prone, anesthetized and mechanically-ventilated sheep.
[An evaluation of the terms used in studying the medical problems of population migration and its classification in foci of opisthorchiasis]. (1991)

On the basis of some epidemiological criteria, the work gives grounds for distinguishing the category of "new settlers" among the whole number of "newcomers". The time necessary for the social adaptation of new settlers is estimated, which makes it possible to take them into account together with permanent residents. The scheme of the division of the population according to the duration of their residence in the endemic area is proposed.
Impact of secondary hyperparathyroidism on disease progression, healthcare resource utilization and costs in pre-dialysis CKD patients (2008)

SHPT in pre-dialysis CKD patients is associated with significantly greater healthcare costs, inpatient hospitalizations, and a faster rate of disease progression compared to pre-dialysis CKD without SHPT. Since observational studies are designed to demonstrate associations rather than causality, further investigation is required to confirm these findings.
Single-chip FPGA architecture for 3D IIR broadband spatio-temporal beam plane-wave filters (2006)

A highly-directional FPGA-based broadband beam former is proposed using a novel 3D IIR plane-wave digital filter. This filter acquires the 3D spatio-temporal input signals from spatially-rectangular arrays of sensors that are scanned by only one time-multiplexed A/D converter. The proposed architecture employs a novel scanned-array 3D parallel vector-processor (VP), clocked at 80 MHz, and has the potential to achieve real-time broadband plane-wave filtering on a single low-cost integrated circuit at spatial frame-rates of 19 kHz over a 64 by 64 spatial broadband sensor array.
A New Versatile Synthesis of N,N′,N″,N″′-Tetra-(2-carboxyethyl)-and N,N′,N″,N″′-Tetra-(3-aminopropyl)-tetraazacycloalkanes by Michael Addition of Polyazacycloalkanes to Acrylic Acid and Acrylonitrile (1996)

Abstract A smooth and convenient one step synthesis of N,N′,N″,N″′-tetra-(2-carboxyethyl)-tetraazacycloalkanes is reported. These compounds are synthesized by Michael addition of tetraazacycloalkanes to acrylic acid. The same Michael addition of tetraazacycloalkanes to an excess of acrylonitrile also leads to the corresponding tetracyanoethylated derivatives. The reduction of such tetracyanoethylated compounds is a new way of preparation for the corresponding primary amines.
Quantification of Macrophage Viability and Inflammatory Response to Dental Bonding Resins (2006)

This study presented a well-characterized biocompatibility profile of dental bonding agents in a mouse macrophage in vitro model. The cellular response to four different formulations of dental bonding resins and the cell viability was determined. Materials were prepared by photopolymerization and the unreacted monomers were extracted in a buffered medium. Murine macrophages were incubated in the extract medium for 24 h. Cellular viability was assessed by fluorescence microscopy and Wst-1 assay, while flow cytometry was used to quantify the apoptotic response. As an indicator of inflammatory responses, real-time polymerase chain reaction was utilized to quantify elevated cytokine production. These responses were monitored by quantifying the levels of tumor necrosis factor alpha (TNFα) and interleukin-1 β (IL-1β) produced by the cells. Murine macrophage cells exposed to the unfilled resin systems containing glycidyl ether of bisphenol A (Bis-GMA) and 2-hydroxyethyl methacrylate (HEMA) had the most adverse response and cells exposed to the filled Bis-GMA and HEMA resin system were the most viable at photopolymerization times. Other resin systems displayed intermediate levels of viability when compared with the untreated control. The levels of IL-1β were significantly elevated in all samples.
Construction of realistic three dimensional facial images using video images (2003)

A method for constructing 3D human facial images which maintains the characteristics of video input image is proposed. First, a personalized 3D polygonal facial model is constructed from two orthogonal facial images. Video input frames are modified, and the movements of facial feature points are tracked and measured based on the contraction rule of facial muscles. The vertices of the 3D polygons are altered accordingly, and the modified input frame is texture mapped directly onto to the forementioned model. This method was implemented using an ordinary CCD camera and computer, and an experiment using one person's data showed that realistic facial images is reconstructed with high speed and precision.
Motion artifact removal algorithm by ICA for e-bra: a women ECG measurement system (2013)

Wearable ECG(ElectroCardioGram) measurement systems have increasingly been developing for people who suffer from CVD(CardioVascular Disease) and have very active lifestyles. Especially, in the case of female CVD patients, several abnormal CVD symptoms are accompanied with CVDs. Therefore, monitoring women’s ECG signal is a significant diagnostic method to prevent from sudden heart attack. The E-bra ECG measurement system from our previous work provides more convenient option for women than Holter monitor system. The e-bra system was developed with a motion artifact removal algorithm by using an adaptive filter with LMS(least mean square) and a wandering noise baseline detection algorithm. In this paper, ICA(independent component analysis) algorithms are suggested to remove motion artifact factor for the e-bra system. Firstly, the ICA algorithms are developed with two kinds of statistical theories: Kurtosis, Endropy and evaluated by performing simulations with a ECG signal created by sgolayfilt function of MATLAB, a noise signal including 0.4Hz, 1.1Hz and 1.9Hz, and a weighed vector W estimated by kurtosis or entropy. A correlation value is shown as the degree of similarity between the created ECG signal and the estimated new ECG signal. In the real time E-Bra system, two pseudo signals are extracted by multiplying with a random weighted vector W, the measured ECG signal from E-bra system, and the noise component signal by noise extraction algorithm from our previous work. The suggested ICA algorithm basing on kurtosis or entropy is used to estimate the new ECG signal Y without noise component.
Immobilization and stabilization of commercial β-1,4-endoxylanase Depol™ 333MDP by multipoint covalent attachment for xylan hydrolysis: Production of prebiotics (xylo-oligosaccharides) (2017)

The commercial enzyme Depol™ 333MDP (D333MDP) was immobilized by multipoint covalent attachment onto 10% cross-linked agarose beads support highly activated with aldehyde groups. The enzyme immobilization process was very efficient, retaining 86% of its initial catalytic activity. Thermal stability of the immobilized D333MDP biocatalysts varied according to the incubation time of the enzyme-support. The optimal immobilized biocatalyst was produced after 24 h of incubation under alkaline conditions and longer incubation times resulted in a loss of stability. The optimal immobilized biocatalyst was 60- and 50-fold more stable at pH 5.5 and pH 7 at 50 °C than the soluble enzyme, respectively. Activity and stability at pH 5.5 were enhanced when the optimal immobilized biocatalyst was modified by chemical amination of the enzyme surface. The chemical amination of the immobilized enzyme surface was 5-fold more stable at pH 5.5 and 50 °C compared with the unmodified immobilized biocatalyst. The best immobilized biocatalysts (containing 100 UI/g of support) were evaluated in the beechwood xylan hydrolysis reaction at 50 °C and pH 5.5. 80% of the reducing sugars were released after 6 h of hydrolysis with the aminated biocatalyst. Xylan hydrolysis reaction with the aminated biocatalyst was 80% faster than with the non-aminated one. The final composition of the xylooligosaccharides (XOS) obtained was identified and quantified by HPAEC-PAD which showed it was composed of 90% of xylobiose and 5% of xylotriose and xylose. The aminated immobilized-stabilized biocatalyst was used for four cycles of hydrolysis with no loss of catalytic activity, resulting in highly active and stable derivative suitable for industrial processes.
Evidence of dysfunctional β2‐adrenoceptor signal system in pre‐eclampsia (2000)

The increased number of functional beta2-adrenoceptors may contribute to the vasodilatation seen in normal pregnancy, while the reduced overall number of receptors may be one of several factors that account for increased peripheral vascular resistance in pre-eclampsia.
Identifying Targets of Human microRNAs with the LightSwitch Luciferase Assay System using 3'UTR-reporter Constructs and a microRNA Mimic in Adherent Cells (2011)

MicroRNAs (miRNAs) are important regulators of gene expression and play a role in many biological processes. More than 700 human miRNAs have been identified so far with each having up to hundreds of unique target mRNAs. Computational tools, expression and proteomics assays, and chromatin-immunoprecipitation-based techniques provide important clues for identifying mRNAs that are direct targets of a particular miRNA. In addition, 3'UTR-reporter assays have become an important component of thorough miRNA target studies because they provide functional evidence for and quantitate the effects of specific miRNA-3'UTR interactions in a cell-based system. To enable more researchers to leverage 3'UTR-reporter assays and to support the scale-up of such assays to high-throughput levels, we have created a genome-wide collection of human 3'UTR luciferase reporters in the highly-optimized LightSwitch Luciferase Assay System. The system also includes synthetic miRNA target reporter constructs for use as positive controls, various endogenous 3'UTR reporter constructs, and a series of standardized experimental protocols. Here we describe a method for co-transfection of individual 3'UTR-reporter constructs along with a miRNA mimic that is efficient, reproducible, and amenable to high-throughput analysis.
Synthesis and characterization of ordered polyurethanes from nonsymmetric diisocyanate and ethylene glycol (2000)

An ordered polyurethane with a head-to-head (H-H) or tail-to-tail (T-T) content over 95% was prepared by polyaddition reaction of a nonsymmetric monomer, p-isocyanatobenzyl isocyanate (1) with a symmetric monomer, ethylene glycol (2). The model reactions were studied in detail to demonstrate the feasibility of polymer formation. The polymerization was conducted in THF in the presence of triethylamine (TEA) at 0 °C by slow addition of a half amount of 2 to 1, followed by removing THF and then adding the rest of 2 in DMF at once at 30 °C in the presence of dibutyltin dilaurate (DBTL). The microstructure of the polymer obtained was investigated by 13C NMR spectroscopy, and it was found that the polymer had the expected structural regularity. The constitutional regularity of polymers influenced their thermal properties. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 2106–2114, 2000
Clinical Pharmacology of Encapsulated Sustained-Release Cytarabine (2000)

Encapsulation of cytarabine into liposomes for sustained release prolongs tumor exposure to cytotoxic concentrations of cytarabine, which may improve therapeutic efficacy in patients with NM secondary to lymphoma or solid tumors.
A multi-fluid model for microstructure formation in polymer membranes (2017)

We develop a multi-fluid model for a ternary polymer solution using the Rayleighian formalism of Doi and Onuki, and give an efficient pseudo-spectral method for solving both the diffusion and momentum equations that result. Subsequently, we find that the numerical simulation is capable of describing systems at the micron length-scale and easily reaches millisecond time-scales. In addition, we characterize the model thermodynamics and kinetics including the (i) phase behavior, (ii) structure of the interfaces, (iii) mutual diffusion coefficients, (iv) bulk spinodal decomposition kinetics with and without hydrodynamics and (v) spinodal decomposition in the presence of an interface with a non-solvent bath. We obtain good qualitative agreement with the expected thermodynamic and kinetic behavior. We also show that a linear stability analysis of the diffusion equation quantitatively predicts the fastest growing mode obtained from simulation and gives insight into the phase separation process relevant for the evolution of microstructure in phase-separating ternary polymer solutions.
103Pd strings: Monte Carlo assessment of a new approach to brachytherapy source design (2014)

By design, the CivaString and CivaThin sources have novel dosimetric characteristics in comparison to Ti-encapsulated (103)Pd seeds. The dosimetric characterization has determined the reasons for these differences through analysis using Monte Carlo-based radiation transport simulations.