gebhart/patrepeval huggingface dataset:
¿Cómo seleccionar una prótesis para un reemplazo primario de cadera? Mínima supervivencia aceptable: resultados de un consenso de expertos (2017)

Introduccion: Uno de los puntos mas criticos en la planeacion de las artroplastias de cadera es la seleccion del implante, puesto que su supervivencia impacta significativamente la salud de los pacientes. Sin embargo, hasta el momento no se ha definido cual es la supervivencia ideal que debe demostrar un implante para ser seleccionado. El objetivo de este consenso es definir los estandares minimos de desempeno para la seleccion de protesis en reemplazo primario convencional de cadera. Material y metodos: El consenso se realizo mediante la metodologia de «grupo nominal». Esto incluyo: 1. Revision de la evidencia disponible y definicion de los temas a evaluar, 2. Reunion para la votacion y discusion y 3. Analisis estadistico cuantitativo con medianas (M) y rangos intercuartilicos (RIC) y cualitativo con proporciones de los resultados obtenidos para generar recomendaciones. Resultados: La fuente primaria de informacion para la seleccion de protesis (M: 8; RIC: 7-9) y de eleccion en caso de evidencia contradictoria (M: 8; RIC: 7-9) o limitada en la literatura (M: 7; RIC: 4.75-825) son los registros nacionales. El minimo seguimiento aceptable es 10 anos (M: 9; RIC: 8-9) y el minimo de supervivencia aceptable es 90% a 10 anos (M: 8; RIC: 5-8.5). Discusion: De acuerdo con estos resultados, el consenso de expertos propone que la seleccion del implante en el reemplazo articular primario convencional de cadera se realice con base en la informacion publicada en los registros nacionales y que dicha protesis tenga un seguimiento minimo de 10 anos y demuestre una supervivencia minima de 90%
EHF SATCOM Terminal Antennas (1982)

The Department of Defense (DOD) MILSATCOM community is rapidly moving toward deployment of Extremely High Frequency (EHF) earth terminals by the late 1980's. As a result, the communications system tradeoffs have solidified into more meaningful terminal specifications, including antenna requirements. Some aspects of antenna requirements at the selected EHF have not been encountered or emphasized in earlier SATCOM applications. It is the objective of this paper to review the system factors of antenna performance and to discuss some of the more pertinent tradeoffs leading to affordable solutions. This paper is aimed at the practicing antenna systems engineer and engineering management personnel of both equipment contractors and procuring agencies. The discussion attempts to distinguish between mobile and fixed platform applications, and concludes with a mobile antenna example at 20/45 gigahertz (GHz) which has been designed, built, and tested.
Antiviral Resistance of Biologic HIV-2 Clones Obtained From Individuals on Nucleoside Reverse Transcriptase Inhibitor Therapy (2000)

Phenotypic resistance of HIV-2 to nucleoside analogues, which developed in HIV-2-infected patients treated with NRTIs, was associated with genotypic changes. Some of the mutations at amino acid positions in the HIV-2 reverse transcriptase gene corresponded with those involved in HIV-1 resistance, although no conventional mutations associated with resistance to AZT were observed.
Cingulum-Callosal white-matter microstructure associated with emotional dysregulation in children: A diffusion tensor imaging study (2020)

Emotional dysregulation symptoms in youth frequently predispose individuals to increased risk for mood disorders and other mental health difficulties. These symptoms are also known as a behavioral risk marker in predicting pediatric mood disorders. The underlying neural mechanism of emotional dysregulation, however, remains unclear. This study used the diffusion tensor imaging (DTI) technique to identify anatomically specific variation in white-matter microstructure that is associated with pediatric emotional dysregulation severity. Thirty-two children (mean age 9.53 years) with varying levels of emotional dysregulation symptoms were recruited by the Massachusetts General Hospital and underwent the DTI scans at Massachusetts Institute of Technology. Emotional dysregulation severity was measured by the empirically-derived Child Behavior Checklist Emotional Dysregulation Profile that includes the Attention, Aggression, and Anxiety/Depression subscales. Whole-brain voxel-wise regression tests revealed significantly increased radial diffusivity (RD) and decreased fractional anisotropy (FA) in the cingulum-callosal regions linked to greater emotional dysregulation in the children. The results suggest that microstructural differences in cingulum-callosal white-matter pathways may manifest as a neurodevelopmental vulnerability for pediatric mood disorders as implicated in the clinical phenotype of pediatric emotional dysregulation. These findings may offer clinically and biologically relevant neural targets for early identification and prevention efforts for pediatric mood disorders.
Evaluation of the Extraction Properties and Stability of Extracted Rare Earth Complexes in Ionic Liquid Extraction System Using β-Diketone (2016)

The extraction behavior of rare earth (RE) species was investigated on benzoyltrifluoroacetone (Hbfa) /triethyl-pentyl-phosphonium bis(trifluoromethyl-sulfonyl)amide ([P2225][TFSA]) system in this study. The stoichiometry of the extracted complex shown RE: ligands = 1:3 by slope analysis regardless of the kinds of acid media in the aqueous phase. The extraction mechanism in this system was revealed as [RE3+]aq + 3[Hbfa]IL [RE(bfa)3]IL + 3[H+]aq and [TFSA]− anion did not participate in the extraction mechanism. The result of Raman spectroscopy also supported the stoichiometry of the extracted complex. Moreover, the chelate formation constant (β) of [Nd(bfa)3] and [Dy(bfa)3] was also evaluated by the direct measurement of [bfa]− anion by ion chromatography. The hypersensitive peak (4I9/2→2G7/2*) in the UV-Vis-NIR spectrum also confirmed the formation of [Nd(bfa)3]. The average chelate formation constants (log β) of [Nd(bfa)3] and [Dy(bfa)3] were estimated to be 7.58 and 7.93, respectively. The value of log β(Dy) was larger than that of log β(Nd); thus, this result indicates that [Dy(bfa)3] was more stable than [Nd(bfa)3]. Furthermore, the optimized structure of the extracted complexes – [Nd(bfa)3(H2O)3] and [Dy(bfa)3(H2O)2] – were also evaluated by the density functional theory (DFT) calculation. On the optimized geometries, the average bond length of the centered Nd3+ ion or Dy3+ ion against the O atom in the 1-carbonyl group was 2.728 Å or 2.407 Å, respectively. This result suggested that the Dy3+ ion would be combined more strongly with the [bfa]− anion than the Nd3+ ion.
Standard design for National Ignition Facility x-ray streak and framing cameras (2010)

The x-ray streak camera and x-ray framing camera for the National Ignition Facility were redesigned to improve electromagnetic pulse hardening, protect high voltage circuits from pressure transients, and maximize the use of common parts and operational software. Both instruments use the same PC104 based controller, interface, power supply, charge coupled device camera, protective hermetically sealed housing, and mechanical interfaces. Communication is over fiber optics with identical facility hardware for both instruments. Each has three triggers that can be either fiber optic or coax. High voltage protection consists of a vacuum sensor to enable the high voltage and pulsed microchannel plate phosphor voltage. In the streak camera, the high voltage is removed after the sweep. Both rely on the hardened aluminum box and a custom power supply to reduce electromagnetic pulse/electromagnetic interference (EMP/EMI) getting into the electronics. In addition, the streak camera has an EMP/EMI shield enclosing the front of the streak tube.
The optical flow estimation with displacement compensation for high-speed motion (2003)

The optical flow equation (OFE) is usually used to estimate the two-dimensional (2-D) apparent motion field of the moving objects in the digital video processing. But sometimes using the OFE directly for high-speed motion analysis, we will find the obvious error in the final results. In this paper, the reason for this is discussed from the theoretical model of the OFE. Then we propose a new method to eliminate this kind of error. After approximate displacement compensation for high-speed motion, the OFE is used to estimate the residual velocity field. The sum of the compensational value and the residual velocity field becomes the final optical flow field. We analyze the validity of the new method and give the one-dimensional (1-D) example so as to explain this problem clearly. In the end, the experiments have demonstrated that the result of optical flow estimation with displacement compensation is much more accurate than the usual one for high-speed motion.
Acoustic transducer design for active reflection cancellation in a finite volume wave propagation laboratory (2018)

This report describes the design, fabrication, and experimentally obtained electro-acoustic response of an acoustic transducer suite constructed for use in the Wave Propagation Laboratory (WaveLab) at ETH Zürich. WaveLab aims to immerse a physical acoustic experiment within a real-time numerical environment, by implementing exact boundary conditions (EBCs) [J. Acoust. Soc. Am., 134(6), EL492–EL498, (2013)]. When scale-model ultrasonic experimentation is not possible, a system with EBCs allows for low frequency, reflection-free acoustic measurements in a small physical domain. The physical experiment of the WaveLab facility consists of a water tank measuring only 2 m on a side, while WaveLab’s EBCs are realized through a massive computational engine coupled with a dense array of sensing and emitting acoustic transducers. The transducers are used to sense outgoing acoustic waves and to create a reflection-cancelling surface. Criteria for the transducers are discussed in terms of individual and overall system response. The design parameters and associated models include sensitivity, scattering strength, directivity, frequency response, noise floor, and the dynamic range of the system. The transducer designs and models are presented alongside their physical prototypes and experimental results.
980 nm Al-free ridge waveguide distributed feedback lasers with lateral gain coupling (2003)

We present Al-free gain-coupled lasers emitting at 980 nm with metal gratings patterned laterally to the laser waveguide. The process is based on standard ridge waveguide fabrication and requires no regrowth. For a sufficiently small waveguide, the evanescent field of the laser mode couples to the lateral grating. Ridge waveguide lasers were processed from an MOCVD grown Al free laser structure with a single InGaAs quantum well. The cw threshold currents are around 17 mA for a 1 mm long laser, differential efficiencies are 0.2 W/A. Monomode emission up to output power levels of 25 mW and sidemode suppression ratios of 45 dB have been obtained. The lasers are monomode over a wide range of temperature and current, indicating that the lateral coupling is sufficiently strong for stable DFB operation.
ChemInform Abstract: A CONVENIENT PROCEDURE FOR THE FORMATION OF ENOL ACETATES UNDER BASIC CONDITIONS (1979)

Abstract Die aliphatischen Aldehyde (I) werden in Gegenwart von Dimethylaminopyridin,Triethylamin und Essigsäure in ihre Enolacetate (II) übergeführt.
Prevalence of diabetic retinopathy and vision-threatening diabetic retinopathy in adults with diabetes in China (2023)

The current epidemic status of diabetic retinopathy in China is unclear. A national prevalence survey of diabetic complications was conducted. 50,564 participants with gradable non-mydriatic fundus photographs were enrolled. The prevalence rates (95% confidence intervals) of diabetic retinopathy and vision-threatening diabetic retinopathy were 16.3% (15.3%-17.2%) and 3.2% (2.9%-3.5%), significantly higher in the northern than in the southern regions. The differences in prevalence between those who had not attained a given metabolic goal and those who had were more pronounced for Hemoglobin A1c than for blood pressure and low-density lipoprotein cholesterol. The participants with vision-threatening diabetic retinopathy had significantly higher proportions of visual impairment and blindness than those with non-vision-threatening diabetic retinopathy. The likelihoods of diabetic retinopathy and vision-threatening diabetic retinopathy were also associated with education levels, household income, and multiple dietary intakes. Here, we show multi-level factors associated with the presence and the severity of diabetic retinopathy.
Low levels of pancreatic elastase 1 in stools of preterm infants (2002)

The amount of faecal pancreatic enzyme elastase 1 was significantly lower in 42 preterm newborns than in 12 full term babies at day 2 (89 (3-539) v 354 (52-600) microg/g, p<0.0007) and day 5 (164 (3-600) v 600 (158-600) microg/g, p<0.05) and correlated positively with total nutrient intake during the first week of life in preterm infants. This should probably be taken into account during early feeding.
Cross-Point Device using Ta2O5/Ta Layer for Synapse Element in Neural Network (2018)

We have developed a cross-point device using a Ta <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> /Ia layer for synapse elements in neural networks. Horizontal 80 and vertical 80 platinum lines and a Ta <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sub> /Ia layer between them make 6400 cross-point synapses integrated on a glass substrate. The electrical conductance gradually degrades by flowing current, which is available for modified Hebbian learning. We found that a neural network using the cross-point synapses are able to recognize multiple letters.
Abstract 17365: Deep-Learning-Based Intravascular Ultrasound Segmentation for the Assessment of Coronary Artery Disease (2020)

Background: Accurate segmentation of the coronary arteries with intravascular ultrasound (IVUS) is important to optimize coronary stent implantation. Recently, deep learning (DL) methods have been proposed to develop automatic IVUS segmentation. However, most of those have been limited to the lumen and vessel segmentation, not applied to segmenting stent dimension. Hence, this study aimed to develop a DL method for automatic IVUS segmentation of stent area in addition to lumen and vessel area. Methods: This study included a total of 45449 images from 1576 (40- or 45-MHz) IVUS pullback runs. The datasets were randomly split into training, validation, and test datasets (0.7:0.15:0.15). After constructing the convolutional neural network to segment IVUS images using the training and validation datasets, we evaluated the performance through the independent test dataset. Results: The DL-based segmentation correlated well with the expert-analysed segmentation with a mean intersection over union of 0.84, the correlation coefficient of 0.99, 0.98, and 0.99 and the mean difference of -0.04±0.05, -0.20±0.11 and -0.12±0.06 mm^2 for lumen, vessel and stent area derived from respectively. Conclusion: This automated DL-based IVUS segmentation of stent area in conjunction with lumen and vessel area showed good agreement with manual segmentation by experts, supporting the feasibility of artificial-intelligence-assisted IVUS assessment and strategy-making in patients undergoing coronary stent implantation.
Figure S2 from MEK Inhibition Synergizes with TYK2 Inhibitors in NF1-Associated Malignant Peripheral Nerve Sheath Tumors (2023)

&lt;p&gt;Supplemental Fig.S2. TYK2 inhibitors reduce proliferation and induce apoptosis in MPNST-724 cells.&lt;/p&gt;
Abstract C81: Variations in receipt of curative-intent surgery for early-stage non-small cell lung cancer (NSCLC) across states in the United States (2016)

Abstract Background: Previous studies reported substantial racial and socioeconomic disparities in receipt of curative-intent surgery for early-stage non-small cell lung cancer (NSCLC) in the US. We examined variation in receipt of curative-intent surgery for early-stage non-small cell lung cancer (NSCLC) across states in the US. We also examined whether black/white disparity in receipt of curative-intent surgery varies by state. Methods: Patients with stage I or II NSCLC diagnosed in 2007–2011 were identified from 38 population-based cancer registries compiled by the North American Association of Central Cancer Registries (NAACCR). We calculated percentage for receipt of curative-intent surgery in each state. Adjusted risk ratios (RRs) were generated using modified Poisson regression to control for sociodemographic (e.g., age, sex, race, insurance) and clinical (e.g., grade, stage, tumor size) factors. NH whites and patients in Massachusetts used as reference for comparisons. Results: Receipt of curative-intent surgery for early-stage NSCLC varied substantially by state, ranging from 52.2% in Wyoming to about 75% in Massachusetts, New Jersey, and Utah. In a multivariable analysis, the likelihood of receiving curative-intent surgery for early-stage NSCLC patients was significantly lower in all states but seven states/registries and ranged from 7% lower in California (RR, 0.93; 95% CI, 0.89–0.97) to 25% lower in Wyoming (RR, 0.75; 95% CI, 0.59–0.95) compared with patients in Massachusetts. Receipt of curative-intent surgery was lower for NH black than NH white patients in all states though statistically significant in only two states (Florida, Texas) after accounting for differences in sociodemographic and clinical characteristics. Conclusions: Receipt of curative-intent surgery for early-stage NSCLC substantially varies across states in the United States, with the rate of receipt for both NH white and NH black patients generally lower and racial disparity higher in southern states. Citation Format: Helmneh M. Sineshaw, Xiao-Cheng Wu, W Dana Flanders, Raymond Uyiosa Osarogiagbon, Ahmedin Jemal. Variations in receipt of curative-intent surgery for early-stage non-small cell lung cancer (NSCLC) across states in the United States. [abstract]. In: Proceedings of the Eighth AACR Conference on The Science of Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; Nov 13-16, 2015; Atlanta, GA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2016;25(3 Suppl):Abstract nr C81.
Human Bordetella bronchiseptica infection related to contact with infected animals: persistence of bacteria in host (1995)

Within a period of 2 1/2 years, Bordetella bronchiseptica was isolated four times from a 79-year-old woman with bronchopneumonia. We have demonstrated by pulsed-field gel electrophoresis that this infection was related to contact with infected rabbits. The initial human B. bronchiseptica isolate had a phenotype characteristic of usual B. bronchiseptica clinical isolates; it produced toxin and adhesins, such as adenylate cyclase-hemolysin, filamentous hemagglutinin, and pertactin, and was able to induce lethality in a murine respiratory model. By contrast, although the three successive human isolates produced adhesins, they did not express adenylate cyclase-hemolysin and were unable to induce lethality. This implies that adenylate cyclase-hemolysin is required to induce lethality. We suggest that B. bronchiseptica may persist in the host, with expression of adenylate cyclase-hemolysin being essential for the initiation of infection and expression of adhesins being essential for persistence.
A Kinematic Terrestrial LIDAR Scanning System (2007)

Terrapoint has developed a novel kinematic terrestrial based laser scanning system, called TITAN™ (Tactical Infrastructure and Terrain Acquisition Navigator) that can be deployed on a passenger vehicle or small watercraft. LIDAR (Light Detection And Ranging), digital imagery and digital video are collected from the survey platform while it is moving at speeds up to 100 km/h. The system is georeferenced using a high accuracy GPS/INS system. The laser scanner assembly in TITAN™ acquires 360 degrees of coverage in the LIDAR point cloud with a single vehicle pass. Commercially available airborne LIDAR systems have been deployed for more than a decade, and the technology has been widely accepted as a fast and efficient means of capturing topographic information. The accuracy of the final 3D LIDAR point cloud is directly affected by the accuracy of the underlying GPS/INS trajectory utilized to georeference the LIDAR measurements. For airborne systems, obtaining the highest accuracy is primarily accomplished by paying close attention to maintaining the integrity of the GPS solution. As airborne GPS for remote sensing is collected in a fairly benign environment (i.e. minimal signal shading, low dynamics, lack of loss of lock) a reliable GPS solution can normally be obtained by preplanning missions during good PDOP windows, maintaining benign flight characteristics (i.e. no steep banks of aircraft) keeping baseline length short, and not flying during periods of high ionospheric activity. In the kinematic terrestrial case, obtaining an accurate and reliable trajectory for the ground based platform is a much more difficult and challenging task than that of an airborne platform due primarily to increased multipath and frequent GPS signal outages caused by obstructions such as buildings, bridges, terrain and vegetation. Again, careful mission planning can mitigate some of these problems by traveling the optimum route, and by preplanning locations for zero velocity updates of the IMU. Given the dynamic and fast-changing environment w.r.t. GPS positioning, it is often a much more difficult challenge to ensure the reliability and integrity of the final post-processed terrestrial trajectory However, the simultaneous collection of LIDAR data from the vehicle platform provides an accurate 3D reference that can be utilized to check the reliability, accuracy and consistency of the GPS/INS derived vehicle trajectory. Repeated passes over the same area provide a tool to observe long term biases in the trajectory by analyzing the time differences in the LIDAR point clouds. Overlap between sensors in the TITAN™ LIDAR array can also be used to examine short-term changes in the GPS/INS trajectory, and have proved invaluable in locating and removing undetected GPS cycle slips. Some examples of this will be presented. Methods of utilizing the LIDAR data to validate and improve the GPS/INS trajectory will be discussed. Finally, overall absolute accuracy of survey results obtained with the kinematic terrestrial LIDAR system (when compared with dense DGPS ground control) will be presented and discussed.
ChemInform Abstract: Photoluminescence from Single Semiconductor Nanostructures (2000)

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.
INDIRECT EFFECTS OF HUMAN ACTIVITIES ON STREAM INVERTEBRATES BY ALTERING SALMONID FISH DENSITY IN MOUNTAIN STREAMS. (2012)

The construction of erosion control dams and the alteration of riparian forest are known to have strong influences on the density of salmonid fish that dominate in mountain streams. Our objective was to elucidate the indirect effect of the dam construction and riparian alteration on stream invertebrates through the alteration of salmonid fish (Oncorhynchus masou ishikawae) density. The densities of two dominant invertebrate species, Baetis yoshinensis and Baetis thermicus, were low at study sites with high O. masou density. In conclusion, our study suggested that human activities indirectly affect stream invertebrates via changing fish abundance in mountain streams.