gebhart/patrepeval huggingface dataset:
<title>Noncontact thickness measurement of dielectric coatings using millimeter waves</title> (1994)

Millimeter wave reflectometry offers a noncontact means of measuring the thicknesses of individual layers within multi-layer dielectric coatings on metallic substrates. Complex reflection coefficients of both TM and TE/TM waves incident on coated materials are measured over a range of frequencies and grazing angles of incidence. The sensitivity of the apparatus is such that single-layer coatings differing by 0.2 microns can be distinguished.
Patient Perspectives of Barriers and Facilitators of Treatment-Seeking Behaviors for Stroke Care (2015)

Individuals who experience strokes face a number of facilitators and barriers to seeking urgent care for their condition. Facilitators and barriers are associated with stroke symptoms and their personal environments. Additional study of barriers to stroke care is needed to adequately design interventions to reduce delays in seeking treatment.
Image-Smearing Errors in Framing Camera Photographs (1963)

In framing camera studies of self-luminous gas discharge columns where the boundaries move appreciably during the exposure time of a single frame, image smearing results. The effective exposure thus produced is derived and provides an estimate of timing errors to be ascribed to dimensions measured from the cine films. From the assumption of logarithmic dependence of image density on exposure, it is found that the timing error ΔT is normally only a small fraction of the frame exposure time for good quality images. In the particular case where the intensity and spectral composition of the emitted light are constant, ΔT is also constant and simply results in a shift in the time origin. A detailed analysis is presented for the Barr and Stroud CP5 framing camera, and the end result is quoted for the Beckman and Whitley camera Model 189.
The Relationship Between Degree of Audible Struggle and Judgments of Childhood Disfluencies as Stuttered or Not Stuttered (1997)

This study investigated whether degree of audible struggle can be used to categorically distinguish childhood stuttered disfluencies from normal disfluencies. Twenty-nine first-year graduate students in communication disorders listened, on two occasions, to 100 disfluent utterances provided by 10 preschool-aged children. Fourteen listeners judged whether each utterance was stuttered or not stuttered, and 15 listeners used a 7-point scale to rate the degree of struggle heard in each utterance. Binary logistic regression analysis indicated that as the perception of degree of struggle increased, so did the likelihood that the disfluent production would be judged as stuttered ( p < 0.00001). For those utterances having high agreement regarding disfluency classification, average ratings of struggle were found to categorically distinguish between stuttered and nonstuttered classes of disfluency. It is suggested that a rating scale for degree of struggle may be a useful clinical tool for diagnosing childhood stuttering. Further study is needed to more fully explore the potential applications of such a tool.
A DVB-S2 signal analyzer for the Alphasat TDP5 communication experiment (2015)

During the design phase of the Q/V-band ground station in Graz/Austria for the Alphasat TDP5 adaptive coding and modulation (ACM) communication experiment, which is based on the DVB-S2 standard, a tool for accurate SNR measurements with high time resolution was needed. State of the art DVB-S2 demodulators with built-in SNR estimators did not satisfy the requirements because the algorithms were not available or they could not be changed. On the other hand, the query times were not predictable. These facts lead to the decision to implement a DVB-S2 signal analyzer on a software defined radio platform, which is able to provide channel state information on a per frame basis. In the current paper, the detailed architecture of the signal analyzer is presented together with simulation and measurement results for different data-aided and non-data-aided SNR estimators.
P2405Echocardiographic criteria to detect unicuspid aortic valve morphology (2017)

Echocardiography for valvular heart disease 489femoral aortic valve replacementent.Different studies have shown mid and long term improvement in left ventricular eyection fraction (LVEF), global longitudinal strain (GLS) and survival.However, early changes in myocardial function after TAVI has not been fully studied.Methods: 113 consecutives patients undergoing transfemoral aortic valve implantation were included.Full echocardiographic study was performed before and after the procedure (during the hospital admission) according to current guidelines.LFAS was defined when aortic valve area (AVA) was below 1 cm 2 and indexed stroke volume below 35 ml/m 2 and normal flow aortic stenosis (NFAS) when indexed stroke volume was above 35 ml/m 2 .GLS was assessed the day in 59 patients.Statistical analysis was performed with SPSS version 12. Results: 113 patients were included.35 patients (30%) showed LFAS.Mean AVA was 0,70±0,22 cm 2 , with mean LVEF of 61%± 13,26 and mean GLS of -11,75±13,29.Significant differences were noted in AVA (0,59 vs 0,75 cm 2 , p<0,001),systolic pulmonary pressure (44,18 vs 38,61 mmHg, p=0,046) and TAPSE (20,23 vs 22,40, p=0,033) between LFAS and NFAS with no differences in GLS or other echocardiographic parameters.After TAVI, no significant differences were noted in any echocardiographic parameters but GLS (mean difference -3,59, p=0,016).However according to flow status, this difference remained significant only in LFAS (mean difference -7,43, p=0,023) Conclusions: Improvement in left ventricular myocardial function take place early after TAVI in patients with LFAS.In these patients, with more advance ventricular disease, the immediate after load reduction done by TAVI is associated with a fast improvement in myocardial mechanics.This suggest that may be this subset of patients may be considered for TAVI earlier, even in cases with lower risk score.Larger specific trials in this population are needed.
Rotaviral Immunity in Gnotobiotic Calves: Heterologous Resistance to Human Virus Induced by Bovine Virus (1979)

The possibility of immunizing human infants against rotaviruses, which cause severe dehydrating diarrheal disease, may depend on the use of a related rotavirus, derived from another animal species, as a source of antigen. To test the feasibility of this approach, calves were infected in utero with a bovine rotavirus and challenged with bovine or human type 2 rotavirus shortly after birth. Infection in utero with bovine rotavirus induced resistance to diarrheal disease caused by the human virus as well as the homologous bovine virus. These data suggest that the bovine virus is sufficiently related antigenically to the human type 2 virus to warrant further evaluation of the former as a source of vaccine.
Measurement of mounting-induced strain in high-power laser diode arrays (1999)

Thermally induced strain caused by device packaging is studied in high-power semiconductor laser arrays by a novel non-invasive technique. Measurements with intentionally strained laser array devices for 808 nm emission reveal spectral shifts of quantum-confined optical transitions in the optical active region. These shifts by up to 10 meV serve as a measure for strain and are compared with model calculations. We demonstrate that different packaging techniques cause different packaging-induced strains. We also show that the packaging-induced strain portion, which gets transmitted through the solder material, differs for different packaging technologies. An intentionally strain- reduced packaging technique is shown to transmit about one quarter of the potential packaging-induced strain towards the optical active layer, whereas another packaging technique, which provides highly reliable 'single-chip' devices is found to transmit about half of the potential amount. Spatially resolved measurements demonstrate strain gradients within the devices. Also temporal strain evolution is monitored. We show that 'the burn-in' is accompanied by strain accumulation whereas for long-term operation strain relaxation occurs.
18 (2009)

<sc>Verena</sc> told her, a week after this, that Mr Pardon wanted so much she should say she would marry him; and she added, with evident pleasure at being able to give her so agreeable a piece of news, that she had declined...
Evolution of the gain extinction ratio in dual-pump phase sensitive amplification (2012)

We have experimentally achieved a gain extinction ratio (GER) of 30 dB at 21.75 dBm pump power in a dual-pump phase sensitive amplifier based on highly nonlinear fiber, which is more efficient than what we predict with the conventional three-wave model. We point out that high-order sidebands play a key role. Then we scrutinize the trajectories of the output signal vector in the complex plane with increasing nonlinear phase shift and understand the roll-over behavior of GER versus pump power curve. We found that the phase "flip" of the output signal occurs around the largest GER. Adjusting design parameters, we show how to improve GER.
Advanced Amine Solvent Formulations and Process Integration for Near-Term CO2 Capture Success (2007)

This Phase I SBIR project investigated the economic and technical feasibility of advanced amine scrubbing systems for post-combustion CO2 capture at coal-fired power plants. Numerous combinations of advanced solvent formulations and process configurations were screened for energy requirements, and three cases were selected for detailed analysis: a monoethanolamine (MEA) base case and two “advanced” cases: an MEA/Piperazine (PZ) case, and a methyldiethanolamine (MDEA) / PZ case. The MEA/PZ and MDEA/PZ cases employed an advanced “double matrix” stripper configuration. The basis for calculations was a model plant with a gross capacity of 500 MWe. Results indicated that CO2 capture increased the base cost of electricity from 5 cents/kWh to 10.7 c/kWh for the MEA base case, 10.1 c/kWh for the MEA / PZ double matrix, and 9.7 c/kWh for the MDEA / PZ double matrix. The corresponding cost per metric tonne CO2 avoided was 67.20 $/tonne CO2, 60.19 $/tonne CO2, and 55.05 $/tonne CO2, respectively. Derated capacities, including base plant auxiliary load of 29 MWe, were 339 MWe for the base case, 356 MWe for the MEA/PZ double matrix, and 378 MWe for the MDEA / PZ double matrix. When compared to the base case, systems employing advanced solvent formulations and process configurations were estimated to reduce reboiler steam requirements by 20 to 44%, to reduce derating due to CO2 capture by 13 to 30%, and to reduce the cost of CO2 avoided by 10 to 18%. These results demonstrate the potential for significant improvements in the overall economics of CO2 capture via advanced solvent formulations and process configurations.
Multiparameter POF Sensing Based on Multimode Interference and Fiber Bragg Grating (2016)

We report the fabrication of a multimode interferometer (MMI), based on a multimode polymer optical fiber (POF), sandwiched between two single-mode silica fibers. The POF used in this work is a step-index fiber with core and cladding composed of a cycloolefin polymer (COP) and PMMA, respectively. The low moisture absorption of the COP material and the benefit of having an exposed core for refractive index measurements in MMI devices lead us to perform an etching of the PMMA layer. Additionally, we report the inscription of a Bragg grating in the COP core material of an etched single-mode-multimode-single-mode (SMS) structure. The two fiber structures were simultaneously characterized to strain, temperature, humidity, and refractive index. The ability to detect refractive index by using a POF-based SMS structure is reported for the first time in this paper. Additionally, the capability for dual parameter measurement was discussed using both FBG and SMS structures.
Clinical and Laboratory Features of Murine Typhus in South Texas, 1980 Through 1987 (1991)

--Infection by Rickettsia typhi causes a systemic illness with clinical and laboratory abnormalities not previously recognized or described. Early clinical diagnosis and treatment are needed to avoid undue morbidity and mortality.
Optical Rotatory Dispersion Studies. I. The Androstane Series<sup>1</sup> (1955)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOptical Rotatory Dispersion Studies. I. The Androstane Series1Carl Djerassi, Eleanor W. Foltz, and A. E. LippmanCite this: J. Am. Chem. Soc. 1955, 77, 16, 4354–4359Publication Date (Print):August 1, 1955Publication History Published online1 May 2002Published inissue 1 August 1955https://pubs.acs.org/doi/10.1021/ja01621a051https://doi.org/10.1021/ja01621a051research-articleACS PublicationsRequest reuse permissionsArticle Views59Altmetric-Citations21LEARN 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
Differential expression of T cell differentiation antigens and major histocompatibility antigens on activated T cells during the cell cycle (1986)

In this report we have analyzed cell cycle-related fluctuations of both quantity and density of the T cell differentiation antigens, CD3 (T3), CD4 (T4) and CD8 (T8), as well as the major histocompatibility complex (MHC) antigens on the cell surface of activated T cells. Phytohemagglutinin-activated T cells cultured for 3 days with or without conditioned medium or for 10 days with conditioned medium and mixed lymphocyte culture-derived T cell clones were used for the analysis. Correlated measurements of the surface antigen quantity (immunofluorescence), DNA content (dye Hoechst 33342), and cell size (light scatter), not influenced by synchrony induction methods and cell fixation, were performed by dual-beam flow cytometry. Our results demonstrate that the T cell differentiation antigens, CD3, CD4 and CD8, and class I MHC antigens are increased in density in the G1 phase for all activated T cells tested. In contrast, class II MHC antigens are increased in density in the G2 phase of activated T cells maintained with conditioned medium. Since it is known that the T cell differentiation antigens and class I MHC antigens on activated T cells are necessary for proliferation of T cells, our study suggests that this effect is more significant in the G1 phase. The cell cycle changes in expression of class I and class II MHC antigens, but not of the T cell differentiation antigens, appear to be mediated by soluble factors, probably including interferon-gamma, which could produce a differential increase of class I and class II MHC antigens on G2 phase cells.
Methodology for Small-Signal Model Extraction of AlGaN HEMTs (2008)

Both large- and small-periphery AlGaN high- electron mobility transistors (HEMTs) will find applications in microwave systems from 2 to 40 GHz because of their superior power handling capability. A self-consistent approach is presented for the linear model's parameter extraction from measured S-parameters. The model for parasitics is selected to reflect loading from both the probe pads and the interconnect regions, including the air bridges. The objective is to accurately extract intrinsic model parameters as the device periphery is increased from 50 mum to 1 mm and to isolate the effects of device layouts, including air bridging the source regions. To accurately extract the shunt and series parasitics, the device must be represented in its ON- and OFF-states determined by the gate and drain bias. The intrinsic device capacitances are not negligible in the forward and beyond-pinchoff reverse bias states at zero drain bias and must be accounted for. With these corrections to the measured S-parameters, consistent results for the intrinsic device parameters are obtained with both small- and large-periphery AlGaN HEMTs.
ChemInform Abstract: SYNTHESIS OF INSECT SEX ATTRACTANTS ON SOLID PHASES (1976)

Abstract An ein Polymeres gebundenes Tritylchlorid liefert mit den Diolen (I) die geschützten Diole (II), die mit Methan = sulfonylchlorid/Pyridin zu (III) mesyliert werden.
Diode-bar-pumped planar waveguide lasers (2002)

Diode-bar lasers have been used with great success to pump high power solid state lasers in numerous different geometries; nevertheless it remains a challenge to use the highly asymmetric diode-bar output efficiently. We describe an approach to this problem in which the solid-state gain medium is fabricated as a planar waveguide, into which the high-aspect-ratio emission from the diode-bar can be coupled using a simple optical system. This is a geometry which should in principle handle heat dissipation well. We have investigated the performance of a planar Nd-doped YAG waveguide pumped by a 20-W 807-nm diode-bar. A high-quality, low propagation loss guide is essential for such a device; in this experiment we used a liquid-phase-epitaxy-grown structure. The 5-mm long waveguide had an 80-/spl mu/m-thick 1.5-at.% Nd:YAG core sandwiched between substrate and protective cladding layer of undoped YAG. The Nd content of the core raised its refractive index by 4.8/spl times/10/sup -4/ relative to substrate and cladding, creating an optical waveguide with a numerical aperture of 0.06. Pump radiation from the diode-bar was coupled into the waveguide using a cylindrical lens system which produced a line focus at the input face of the waveguide with measured beam radii of 10 /spl mu/m and /spl sim/1 mm along the guided and non-guided axes respectively. A monolithic laser cavity was formed by dielectric coatings applied to the plane-parallel end-faces of the waveguide.
Transient changes in heart rate variability in response to orthostatic task, endurance exersice and training : with special reference to autonomic blockades and time-frequency analysis (2009)

Heart rate variability (HRV) is generally accepted as an estimate of the autonomic, particularly vagal, control of the heart. The quantitative relationship of HRV to vagal heart rate (HR) control is, however, unclear. In addition, the conventional analysis methods of HRV are not suitable for analyzing rapid adjustments of autonomic control. Time-frequency analysis methods, including short-time Fourier transform (STFT), have been developed for analyzing non-stationary signals.The present study was designed to evaluate the ability of HRV to quantify within-subject changes in autonomic HR control by using autonomic blockades and an active orthostatic task, and to study transient changes in HRV in response to a bout of endurance exercise and to endurance training. The present blockade experiments indicated that the spectral power of HRV at all frequencies, particularly high frequency power [HFP, in ln(ms2)], was predominantly mediated by the vagal system and that the within-subject relationship between HFP and vagal HR control was essentially linear. HRV provided no specific index of sympathetic HR control.During the active orthostatic task, the STFT method was able to detect and quantify transient changes in vagal HR control. Application of the STFT method to the exercise data showed that HFP decreased during the incremental maximal exercise test up to an intensity of 60-70% of maximal power, reflecting vagal withdrawal. Further, the increase in absolute HFP immediately after exercise was faster after the low than high intensity exercise, suggesting faster recovery of vagal HR control after the low intensity exercise. The effects of aerobic fitness on HRV response to exercise were evaluated by using cross-sectional and longitudinal designs.Two groups differing in age-related aerobic fitness were formed by using age-related aerobic fitness norms as classification criteria. Comparisons between the high and moderate age-related fitness groups showed that high age-related aerobic fitness was related to improved vagal HR control at rest and during recovery from submaximal endurance exercise. In the longitudinal design, previously untrained individuals exercised twice a week for 14 weeks. The results indicated that the low-dose endurance training programme improved vagal HR control at the same absolute submaximal exercise intensities but did not alter vagal HR control at rest in previously untrained individuals.It also increased maximal oxygen uptake. To summarize, the STFT method provided a non-invasive tool for assessing transient changes in vagal HR control without the need to interfere with normal control, e.g. by using blocking drugs. The changes in HRV in response to endurance exercise yielded information on the function of the autonomic nervous system in addition to that obtained by resting measurements of HRV.
Capital for College: Parental Assets and Postsecondary Schooling (2001)

This article argues that traditional models of educational attainment have neglected a substantial portion of the economic resources available to parents to facilitate their children's success in schooling: wealth. In multigenerational analyses of the Panel Study of Income Dynamics, it demonstrates that parental wealth, as measured by net worth, has a strong, nonlinear effect on the postsecondary schooling of offspring-net of income and other measures of socioeconomic background. Logistic regression models show that parental wealth is a strong predictor of enrollment in college and may affect the completion of college (attaining a bachelor's degree) but is not significant for the transition to graduate school. A comparison of models in which wealth is converted into an income stream and then added to annual income and models in which the effects of parental income and net worth are estimated separately indicates that wealth has properties that are analytically distinct from income
A Cross-Coupled LPF Topology and Design for Millimeter-Wave RFIC Applications (2012)

A low-pass filter (LPF) with ultrawide rejection band and compact size by using a cross-coupled topology is proposed. The operating mechanism of the cross-coupled LPF from a unit cell to multiple cells is investigated by using the proposed circuit model. The topology and the circuit model are adopted to design the on-chip LPFs through parameter extracting and electromagnetic optimization. One of the designed cross-coupled LPFs with 1-dB cutoff frequency f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> of 2.2 GHz demonstrates the stopband rejection of 30 dB up to 20 f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> , i.e., 45 GHz, and the rejection of 20 dB up to 52 f <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> , i.e., 110 GHz. The measured passband insertion loss is less than 2.2 dB. The size of the LPF is only 350 μm by 280 μm or 0.0089 λg ×0.0071 λg (λg is the guide wavelength on silicon at cutoff frequency).