gebhart/patrepeval huggingface dataset:
Measurement of the Closing Behavior of the Björk‐Shiley Monoleaflet Mechanical Heart Valve with an Electrohydraulic Total Artificial Heart (2003)

When cavitation occurs near a material surface of a mechanical heart valve (MHV), pits on the surface of the MHV and hemolysis are caused. Therefore, it is very important to investigate the possibility of the occurrence of cavitation in an MHV. To study the possibility of cavitation occurrence in a 25 mm Björk-Shiley monoleaflet, we analyzed the closing behavior of these valves. The closing event of these valves in the mitral and aortic positions was simulated in an electrohydraulic total artificial heart with a stroke volume of 100 ml. Tests were conducted under physiologic pressures at heart rates of 50, 60, 70, and 80 beats/min with cardiac outputs of 4.8, 5.9, 7.0, and 8.1 l/min, respectively. The disk-closing behavior was measured by a laser displacement sensor. The closing behaviors were investigated with various cardiac outputs and gravity direction. The maximum velocities of the aortic valve ranged from 0.8 to 0.9 m/s, and for the mitral valve ranged from 1.48 to 1.6 m/s. In aortic position valves, the maximum closing velocities were less than the reported cavitation thresholds, but the maximum closing velocities of the mitral valve were similar to the cavitation threshold. Therefore, we suggest that there should be the possibility of cavitation occurrence in the mitral valve of an electrohydraulic total artificial heart.
ChemInform Abstract: Dynamic Electrochemistry of Iron‐Sulfur Proteins (1993)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
High efficiency video coding for ultrasound video communication in m-health systems (2012)

Emerging high efficiency video compression methods and wider availability of wireless network infrastructure will significantly advance existing m-health applications. For medical video communications, the emerging video compression and network standards support low-delay and high-resolution video transmission, at the clinically acquired resolution and frame rates. Such advances are expected to further promote the adoption of m-health systems for remote diagnosis and emergency incidents in daily clinical practice. This paper compares the performance of the emerging high efficiency video coding (HEVC) standard to the current state-of-the-art H.264/AVC standard. The experimental evaluation, based on five atherosclerotic plaque ultrasound videos encoded at QCIF, CIF, and 4CIF resolutions demonstrates that 50% reductions in bitrate requirements is possible for equivalent clinical quality.
Effect of electro‐activated brine solution on the migration of metallic ions from the cans to the product in sterilized canned sweet corn (2016)

Tinplate cans were used to study if electro-activated brine solution (EAS) is more corrosive than conventional one by ICP analysis. The results showed different effects of EAS on cans, alone or filled with product. Acidic EAS (pH 2-3) and Redox +900 to +1200 mV highly reacted with the cans. The concentrations of Zn, Fe, and Cu in the solution were 0.028, 28.81, and 0.022 ppm, respectively. No Sn migration was observed in this case. When neutral or acidic chlorine-free EAS was used, no significant difference was observed in comparison with the corrosivity of standard NaCl brine. Alkaline EAS with pH>10 and negative E (≤-966 mV) did not affect Zn, Fe, and Cu migration. However, it affected tin migration. Nevertheless, it is important to mention that even if some corrosion was observed, it was in the limit of the permitted level of concentration when the cans were filled with a product.
Photonic bands in two-dimensionally patterned multimode GaN waveguides for light extraction (2005)

We observe experimentally by photoluminescence the band structure and specific emission properties of an in-plane, light-diffracting photonic crystal formed onto a multimode gallium nitride waveguide. Clear-cut two-dimensional photonic crystal effects are reported. Comparison with modeling results in identification of the band structure, provides insight into the light diffraction mechanism and points out design issues for enhancement of the extraction efficiency.
L'accueil et la prise en charge des jeunes sur les territoires : restitution des travaux de recherche appliquée menée sur la région Bretagne ». Jeunesse(s): tous acteurs, Quelles coopérations possibles ? (2015)

International audience
Localized modes in capped single-walled carbon nanotubes (2009)

We study numerically small-amplitude oscillations in capped single-walled carbon nanotubes and predict the existence of surface modes localized at capped tips of the nanotubes. These modes are similar to the surface Tamm states found in solids and optics at the edges of truncated lattices.
An Analysis of Simplified Feed Architectures for MMIC (Monolithic Microwave Integrated Circuit) T/R (Transmit/Receive Module Arrays, (1987)

Abstract : MMIC T/R modules offer the possibility for simplifying the feed networks of active aperture phased arrays. In particular, the addition of amplitude control along with the existing phase control would allow the same feed network to be used in the transmit and receive modes even though the two require grossly different aperture tapers. This is easily accomplished by using the amplitude control in the modules to provide the weighting required to produce low sidelobe receive beams. Specific examples in which amplitude control is implemented with digital attenuators are examined. The effect of the attenuators on the array output signal-to-noise ratio and the error sidelobe level due to the amplitude quantization are evaluated. The results indicate that the component values needed - total attenuation 20 to 30 dB, low noise amplifier gains and noise figures 20 to 30 dB and 3 to 4 dB respectively, and quantization of 2 to 6 bits - are readily achievable in current GaAs technology. With these, active aperture monopulse arrays with sidelobe levels of -20 to -50 dB below the peak of the mainbeam may be designed with greatly simplified feed networks. (Author)
Chromatographic Separation of Sugars on Charcoal<sup>1</sup> (1950)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChromatographic Separation of Sugars on Charcoal1Roy L. Whistler and Donald F. DursoCite this: J. Am. Chem. Soc. 1950, 72, 2, 677–679Publication Date (Print):February 1, 1950Publication History Published online1 May 2002Published inissue 1 February 1950https://pubs.acs.org/doi/10.1021/ja01158a009https://doi.org/10.1021/ja01158a009research-articleACS PublicationsRequest reuse permissionsArticle Views706Altmetric-Citations410LEARN 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 Concurrent Fully-Integrated BiFET LNA for W-CDMA/IEEE 802.11a Applications (2006)

This paper presents a new BiFET concurrent fully-integrated low noise amplifier (LNA) targeted to W-CDMA/WLAN IEEE 802.11a standards. The use of a concurrent topology enables saving important die area and power consumption compared to the parallel solution that employs two separated LNAs. A design methodology that helps selecting input/output matching network element values is also presented
CdSe/ZnTe superlattices optimized as absorbers for photovoltaics (2013)

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Noise tolerant oscillator design using perturbation projection vector analysis (2008)

The impact of an oscillatorpsilas intrinsic and extrinsic noise sources on its noise performance is evaluated using the perturbation projection vector (PPV) analysis. The projection of a perturbation into the phase deviation for white and flicker noise, as well as for deterministic perturbations is explained qualitatively. The PPV analysis is then applied to two ring-type voltage controlled oscillators (VCO). Comparisons with measured results demonstrate the usefulness of the PPV analysis for design of noise tolerant oscillators.
Syntheses of Allopregnane Analogs of Cortol and Cortolone<sup>1</sup> (1961)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSyntheses of Allopregnane Analogs of Cortol and Cortolone1SOL DAUM and DAVID K. FUKUSHIMACite this: J. Org. Chem. 1961, 26, 2, 516–520Publication Date (Print):February 1, 1961Publication History Published online1 May 2002Published inissue 1 February 1961https://doi.org/10.1021/jo01061a055Request reuse permissionsArticle Views69Altmetric-Citations2LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (626 KB) Get e-Alertsclose Get e-Alerts
Stochastic Power Control for Time-Varying Fading Wireless Communication Networks (2005)

The performance of stochastic optimal power control for time-varying fading channels, in which the evolution of the dynamical channel is described by stochastic differential equations, is determined. Both long-term and short-term time-varying models for fading wireless channels are considered. These models essentially capture the spatio-temporal variations of wireless channels. The solution of the stochastic optimal control is obtained through path-wise optimization, which is solved by linear programming using a predictable power control strategy. The algorithm can be implemented using an iterative numerical scheme. The performance of the algorithm is interference or outage probability. The algorithm can be used as long as the time duration for successive adjustments of transmitter powers is less than the coherence time of the channel
A case of malignant otitis externa caused by Candida glabrata in a patient receiving haemodialysis (2006)

A 74-y-old male receiving haemodialysis presented with right-sided otalgia, otorrhoea and diffuse swelling on the right external auditory canal. Following an initial successful treatment with prolonged intravenous antibiotics, the patient relapsed with a secondary infection in the same site due to Candida glabrata. We report an unusual case of malignant otitis externa caused by the fungus C. glabrata.
On the Effect of Carburizing and Quenching Conditions on the Properties of Some Practical Case Hardening Steels. (Studies on the Gas Carburizing of Some Practical Case Hardening Steels, 2nd Report) (1961)

the Effect of Carburizing and Quenching Conditions on the Properties of Some Practical Case Hardening Stees(Studies on the Gas Carburizing of Some Practical Case Hardening Steels2nd Report)
A mammalian viral enhancer confers transcriptional regulation in yeast. (1988)

Transcriptional enhancers are DNA sequences that regulate RNA transcription from linked promoters by binding to cellular proteins (trans-activators). In the mammalian virus SV40, initiation of transcription is controlled, in part, by a strong 72-base pair enhancer. We show that yeast cells contain a factor that binds specifically to a key DNA motif in the SV40 enhancer, the P element that is essential for viral transcription in mammalian cells. The P element shows sequence similarity to a yeast DNA transcriptional regulatory element, GCN4, that controls transcription of genes that code for amino acid biosynthetic enzymes. Insertion of the SV40 enhancer or single or multiple copies of the P element itself upstream from the cytochrome Cyc-1 promoter places the hybrid viral-yeast transcription unit under metabolic control in yeast cells. These studies suggest that the SV40 P element and its complementary trans-activator represent a conserved transcriptional control mechanism that operates on widely divergent functions in evolution.
Development of a laboratory prototype spraying flash evaporator. (1972)

A functional description of the flash evaporator that is being developed as a candidate for the Space Shuttle Environmental Control System thermal control is presented. A single evaporator configuration uses water as an evaporant to accommodate on-orbit peak heat loads and Freon 22 for terrestrial flight phases below 120,000 ft altitude. Development history, test plans, and operational characteristics are described. Detailed information is included to show: design features, fabrication techniques used for a prototype unit, redundancy considerations, and the control arrangement.
Analyzing Site Selectivity in Rh<sub>2</sub>(esp)<sub>2</sub>-Catalyzed Intermolecular C–H Amination Reactions (2014)

Predicting site selectivity in C-H bond oxidation reactions involving heteroatom transfer is challenged by the small energetic differences between disparate bond types and the subtle interplay of steric and electronic effects that influence reactivity. Herein, the factors governing selective Rh2(esp)2-catalyzed C-H amination of isoamylbenzene derivatives are investigated, where modification to both the nitrogen source, a sulfamate ester, and substrate are shown to impact isomeric product ratios. Linear regression mathematical modeling is used to define a relationship that equates both IR stretching parameters and Hammett σ(+) values to the differential free energy of benzylic versus tertiary C-H amination. This model has informed the development of a novel sulfamate ester, which affords the highest benzylic-to-tertiary site selectivity (9.5:1) observed for this system.
Hydroxytelechelic polybutadiene, 9. Kinetics of reactions in solution and in bulk between radically obtained hydroxytelechelic polybutadiene and propyl and phenyl isocyanate studied by <sup>1</sup>H NMR (1986)

Abstract The kinetics of the reactions of radically obtained hydroxytelechelic polybutadiene (Arco R45M) with propyl isocyanate and phenyl isocyanate were studied by 1 H NMR at high field. The reactivities of the three alcohol functions of Arco R45M were found to be different. The three individual reactions follow a 3rd order law and are accelerated by autocatalysis. There is competition between (OH, OH) auto‐association and (free OH + isocyanate) reactions. As a consequence, rate constants are strongly affected by (OH, OH) association phenomena.
Expression of the two‐pore domain potassium channel, TASK‐2, in rat pancreatic acinar cell zymogen granule membrane (2008)

Ion flux across pancreatic secretory vesicle membranes contributes to exocytotic secretion: mediating vesicular swelling involved in “kiss and run” exocytosis, promoting solubilization and release of vesicle content, and contributing to intravesicular pH changes. The present study implicates the pH sensitive TASK‐2 channel in one or more of these processes: TASK‐2 expression was documented and localized to zymogen granule membranes and secretion shown to be modulated by TASK‐2 selective drugs. TASK‐2 mRNA expression was demonstrated using SYBR Green real time PCR. Total RNA was isolated from purified acinar cells obtained by Percoll density gradient centrifugation of collagenase‐dispersed cells. Reverse transcription was performed on 1 μg of DNase‐treated total RNA using random decamer primers. TASK‐2‐specific forward and reverse primers amplified a single product from the cDNA based on dissociation curve analysis. Western blot analysis using an anti‐TASK‐2 antibody (Alomone) revealed two immunoreactive protein bands in a crude microsomal fraction migrating as a doublet at 54 and 55 kD (the predicted mass of rTASK‐2 is 58 kD); identical protein bands were obtained in Western blots of purified zymogen granule membranes. Confocal microscopy revealed that immunoreactivity was cytoplasmic and primarily localized to the apical pole. Finally, CCK‐induced amylase secretion from diced pancreatic tissue fragments was increased 100% by the TASK‐2 agonist, halothane, without affecting basal release and completely inhibited by the TASK‐2 inhibitor, clofilium, without affecting basal secretion.
Lattice structure and vibrational properties of the same nano-object (2005)

We present a procedure for determining independently the lattice structure and the vibrational properties of the same individual nano-object. For the example of an individual single-walled carbon nanotube we demonstrate the determination of the structural indices (n,m) of the nanotube by electron diffraction and of the frequencies of vibrational modes by micro-Raman spectroscopy. The precise and independent determination of both structure and mode frequencies allows for direct and unambiguous verification of molecular dynamical calculations and of conclusions drawn from Raman-only experiments.
Heat Treatment of Bovine Colostrum. I: Effects of Temperature on Viscosity and Immunoglobulin G Level (2006)

The objective of this study was to identify the critical temperature, at or below which heat-treatment of bovine colostrum would produce no significant changes in viscosity, IgG concentration, or Ig activity. Results of preliminary work, using a Rapid Visco Analyzer (RVA) to heat 50-mL aliquots from 6 unique batches of bovine colostrum at 59, 60, 61, 62, and 63 degrees C, suggested that colostrum could be heated to 60 degrees C for up to 120 min without changing viscosity or IgG concentration. This finding was confirmed by heating 50-mL aliquots from 30 unique batches of colostrum in an RVA for 120 min at 60 and 63 degrees C. Heating colostrum to 63 degrees C resulted in an estimated 34% decrease in IgG concentration and 33% increase in viscosity. However, there was no difference in IgG concentration between preheat-treated (73.4 +/- 26.5 mg/mL) and post-heat-treated (74.5 +/- 24.3 mg/mL) samples after heating colostrum to 60 degrees C in an RVA for 120 min. Similarly, viscosity was unaffected after heating colostrum to 60 degrees C in an RVA for 120 min. High quality colostrum (> or =73.0 mg/mL) suffered greater losses of IgG and greater viscosity changes when heated to 63 degrees C than did moderate quality colostrum (<73.0 mg/mL). However, the effects of colostrum quality were minor if high quality colostrum was only heated to 60 degrees C. The results of a bovine viral diarrhea serum neutralization assay suggested that antibody activity was unchanged after heating colostrum to either 60 or 63 degrees C. However, these results were interpreted as being inconclusive due to a high proportion of missing results because of the congealing of many samples after heat treatment. The results of this study indicate that 50-mL volumes of bovine colostrum can be heat treated at 60 degrees C for up to 120 min in an RVA without affecting IgG concentration or viscosity.
Identification of a Replicon from pTXL1, a Small Cryptic Plasmid from <i>Leuconostoc mesenteroides</i> subsp. <i>mesenteroides</i> Y110, and Development of a Food-Grade Vector (2002)

A 2,665-bp cryptic plasmid, pTXL1, isolated from Leuconostoc mesenteroides subsp. mesenteroides Y110 was identified. This plasmid harbors a replicon localized on a 1,300-bp fragment. Two observations suggested that pTXL1 does not belong to rolling-circle replication (RCR)-type plasmids and most likely replicates via a theta mechanism. These hypotheses are supported by the observation that no detectable single-stranded intermediate was found for the replicon and that, unlike in RCR-type plasmids, the pTXL1 replicon sequence lacks an open reading frame encoding a replicase. The small-sized pTXL1 plasmid is stable and, according to its origin, can be considered in the "generally recognized as safe" category. Its ability to replicate in several lactic acid bacteria was exploited to develop a vector producing mesentericin Y105, a class II anti-Listeria bacteriocin. With this new vector, a recombinant industrial Leuconostoc cremoris strain able to produce mesentericin Y105 was constructed.
Reduction of Plasma Cold Agglutinin Titers by Means of Plasmapheresis to Prepare a Patient for Coronary Bypass Surgery (1993)

A 53-year-old man with abnormally elevated cold agglutinins was treated successfully by plasma exchange so that he was able to sustain coronary artery surgery and extracorporeal circulation. Two plasma exchanges, consisting in the exchange of one plasma volume with a 5% albumin solution each, were performed in our intensive care unit with careful monitoring of vital parameters. The plasma exchanges resulted in a reduction of the titer of the cold agglutinins and of the thermal amplitude as well. With the exception of postoperative bleeding requiring re-intervention, the patient was successfully operated and could be dismissed on the 16th postoperative day in good condition.
E105 THE CLARIFICATION OF FUEL-VAPOR CONCENTRATION ON THE PROCESS OF INITIAL COMBUSTION AND SOOT FORMATION IN A DI DIESEL ENGINE (2003)

The authors have conducted experimental studies to clarify the combustion characteristics of unsteady turbulent diffusion flames in relation to the soot formation and oxidation process in a DI diesel engine. In the present study, the effect of fuel vapor concentration on the process of early combustion and soot formation has been investigated using several optical measurements. Laser-induced incandescence (LII) has been used to obtain the 2-D distribution of soot particles in a sooting field. Furthermore, planar laser-induced exciplex fluorescence (LIEF) has been applied to simultaneous visualization of the liquid and vapor phases of the fuel jet in a DI diesel engine. The experimental results present the effect of fuel vapor distribution on the initial soot formation process subsequent to autoignition in addition to its spatial dependence.