gebhart/patrepeval huggingface dataset:
Intracardiac echocardiography off piste? Closure of the left atrial appendage using ICE and local anesthesia (2010)

Left atrial appendage (LAA) occlusion is increasingly accepted to reduce the risk of stroke in patients with atrial arrhythmia who are unsuitable for routine anticoagulation. It is generally performed under general anesthesia, guided by transoesophageal echocardiography with accurate imaging being essential for correct deployment of the device. We present a case where LAA occlusion was done under local anesthesia in a high-anesthetic risk patient, using novel placement of an intracardiac echo probe via a Mullins sheath in the right ventricular outflow tract and pulmonary artery. This allowed accurate visualization of device deployment in the LAA. This technique may increase the spectrum of patients who may benefit from the procedure and decrease procedure time, fluoroscopy, and procedure-related morbidity.
CHORUS Deliverable 2.1: State of the Art on Multimedia Search Engines (2007)

Based on the information provided by European projects and national initiatives related to multimedia search as well as domains experts that participated in the CHORUS Think-thanks and workshops, this document reports on the state of the art related to multimedia content search from, a technical, and socio-economic perspective. The technical perspective includes an up to date view on content based indexing and retrieval technologies, multimedia search in the context of mobile devices and peer-to-peer networks, and an overview of current evaluation and benchmark inititiatives to measure the performance of multimedia search engines. From a socio-economic perspective we inventorize the impact and legal consequences of these technical advances and point out future directions of research.
Excitation of coupled ion lattice-streaming carrier modes in high mobility semiconductors (2009)

Interaction between streaming carrier plasmons and lattice vibrations in ultrahigh mobility materials generates novel, hybrid, lattice-streaming carrier modes. The Boltzmann kinetic equation for a collisionless carrier response is employed to obtain a dispersion relation including the effects of thermal velocity spreads. The resulting slow electrostatic (ES) modes involve plasmon-phonon (PP) coupling, while the fast electromagnetic (EM) modes involve plasmon-photon-phonon coupling. There is an unstable parameter regime leading to spontaneous growth of slow ES PP modes from noise. Thermal spreads reduce but do not eliminate the growth rate. The fast EM modes are found to be stable and slightly damped over the parameter regime. Spontaneous growth of ES modes carries implications for terahertz generation in high mobility materials.
Impact of ultrasonication on carbon nanotube demixing and damage in polymer nanocomposites (2020)

Abstract While ultrasonication is universally employed for dispersion and distribution of carbon nanotubes (CNTs) in a solvent or polymer solution, the current work focuses on the underlying mechanisms of CNT demixing and CNT damage that can occur during processing. Here, multi‐walled CNTs were dispersed in a polycaprolactone polymer matrix using an established solution processing technique. Electrical, rheological, and mechanical characterization results suggest that once nanocomposite property enhancements reach an optimal level, further sonication leads to a decrease in the corresponding properties due to a combination of CNT damage and demixing mechanisms. Evidence of CNT damage from transmission electron microscopy, poor CNT distribution from optical image analysis and shear‐induced crystallization results, and reagglomeration observed from ultraviolet–visible results, taken together, suggest that mechanisms of demixing and damage of the CNTs coexist for excessive sonication times.
Electrochemical capacitors based on electrodeposited ruthenium oxide on nanofibre substrates (2006)

Electrodeposition of RuO2 on electrospun TiO2 nanorods using cyclic voltammetry is shown to increase the capacitance of RuO2. This phenomenon can be attributed to the large surface areas of the nanorods. Among several ranges of deposition, the range from 0.25 to 1.45 V with respect to Ag/AgCl was effective. The electrode deposited with this range exhibited a specific capacitance of 534 F g−1 after deposition for 10 cycles with a scan rate of 50 mV s−1. The structural water content in RuO2 was quite different depending on the deposition potential range. Higher amounts of structural water increased the charge storage capability. The stability of the electrode was tested using cyclic voltammetry over 300 cycles.
Regular Patterns on Fracture Surfaces of Polymer Gels (1996)

The morphology on fracture surfaces of polymer gels has been studied. Two kinds of macroscopic morphology were found depending on the crack growth rate. One is similar to the well-known river pattern and is observed at large crack growth rates and the other looks like fish scales and is observed at small crack growth rates. The change of the pattern indicates the existence of a dynamic transition. The introduction of water into the cracks in the gels increased the characteristic dimension of the regular patterns.
Atomic force microscopy recognition of protein A onStaphylococcus aureuscell surfaces by labelling with IgG–Au conjugates (2013)

The labelling of functional molecules on the surface of bacterial cells is one way to recognize the bacteria. In this work, we have developed a method for the selective labelling of protein A on the cell surfaces of Staphylococcus aureus by using nanosized immunogold conjugates as cell-surface markers for atomic force microscopy (AFM). The use of 30-nm size Au nanoparticles conjugated with immunoglobulin G (IgG) allowed the visualization, localization and distribution of protein A-IgG complexes on the surface of S. aureus. The selectivity of the labelling method was confirmed in mixtures of S. aureus with Bacillus licheniformis cells, which differed by size and shape and had no IgG receptors on the surface. A preferential binding of the IgG-Au conjugates to S. aureus was obtained. Thus, this novel approach allows the identification of protein A and other IgG receptor-bearing bacteria, which is useful for AFM indication of pathogenic microorganisms in poly-component associations.
The CSF and arterial to internal jugular venous hormonal differences during exercise in humans (2004)

Strenuous exercise increases the cerebral uptake of carbohydrate out of proportion to that of oxygen, but it is unknown whether such enhanced carbohydrate uptake is influenced by the marked endocrine response to exercise. During exhaustive exercise this study evaluated the a-v differences across the brain (a-v diff) of hormones that could influence its carbohydrate uptake (n= 9). In addition, neuroendocrine activity and a potential uptake of hormones via the cerebrospinal fluid (CSF) were assessed by lumbar puncture postexercise and at rest (n= 6). Exercise increased the arterial concentration of noradrenaline and adrenaline, but there was no cerebral uptake. However, following exercise CSF noradrenaline was 1.4 (0.73-5.5) nmol l(-1), and higher than at rest, 0.3 (0.19-1.84) nmol l(-1) (P < 0.05), whereas adrenaline could not be detected. Exercise increased both the arterial concentration of NH(4)(+) and its a-v diff, which increased from 1 (-12 to 5) to 17 (5-41) micromol l(-1) (P < 0.05), while the CSF NH(4)(+) was reduced to 7 (0-10) versus 11 (7-16) micromol l(-1) (P < 0.05). There was no release from, or accumulation in the brain of interleukin (IL)-6, tumour necrosis factor (TNF-alpha), heatshock protein (HSP72), insulin, or insulin-like growth factor (IGF)-I. The findings indicate that for maximal exercise, the concentration of noradrenaline is increased within the brain, whereas blood borne hormones and cytokines are seemingly unimportant. The results support the notion that the exercise-induced changes in brain metabolism are controlled by factors intrinsic to the brain.
Tech review: Game platform for upgrading counting ability on preschool children (2013)

One of difficulties in learning mathematics (counting) can be overcome by providing a relaxed and fun learning for preschoolers. Games can be used as an alternative solution. This study was conducted as a pilot project for reviewing the Kodu, Unity 3D and Construct 2 game platform for this purpose. The method used is the classification, review/evaluation, prototyping and analysis. Tech Review of these game platforms will be discussed as a result in this paper.
Calretinin interneuron density in the caudate nucleus is lower in autism spectrum disorder (2017)

Autism spectrum disorder is a debilitating condition with possible neurodevelopmental origins but unknown neuroanatomical correlates. Whereas investigators have paid much attention to the cerebral cortex, few studies have detailed the basal ganglia in autism. The caudate nucleus may be involved in the repetitive movements and limbic changes of autism. We used immunohistochemistry for calretinin and neuropeptide Y in 24 age- and gender-matched patients with autism spectrum disorder and control subjects ranging in age from 13 to 69 years. Patients with autism had a 35% lower density of calretinin+ interneurons in the caudate that was driven by loss of small calretinin+ neurons. This was not caused by altered size of the caudate, as its cross-sectional surface areas were similar between diagnostic groups. Controls exhibited an age-dependent increase in the density of medium and large calretinin+ neurons, whereas subjects with autism did not. Diagnostic groups did not differ regarding ionized calcium-binding adapter molecule 1+ immunoreactivity for microglia, suggesting chronic inflammation did not cause the decreased calretinin+ density. There was no statistically significant difference in the density of neuropeptide Y+ neurons between subjects with autism and controls. The decreased calretinin+ density may disrupt the excitation/inhibition balance in the caudate leading to dysfunctional corticostriatal circuits. The description of such changes in autism spectrum disorder may clarify pathomechanisms and thereby help identify targets for drug intervention and novel therapeutic strategies.
Nucleoside S-alkyl phosphorothioates. VI. Synthesis of deoxyribonucleotide oligomers (1972)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNucleoside S-alkyl phosphorothioates. VI. Synthesis of deoxyribonucleotide oligomersE. Heimer, M. Ahmad, S. Roy, A. Ramel, and A. L. NussbaumCite this: J. Am. Chem. Soc. 1972, 94, 5, 1707–1713Publication Date (Print):March 1, 1972Publication History Published online1 May 2002Published inissue 1 March 1972https://pubs.acs.org/doi/10.1021/ja00760a047https://doi.org/10.1021/ja00760a047research-articleACS PublicationsRequest reuse permissionsArticle Views44Altmetric-Citations14LEARN 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
Does Lifestyle Account For Differences In Endothelial Function Between Asians And Caucsians? (2010)

Though previous studies had compared artery health between Asians and Caucasians, few have considered lifestyle, factors of diet and physical activity in these comparisons. PURPOSE: To compare endothelial function, energy intake and physical activity betweenAsians and Caucasians. METHODS: Fifteen Asian (A) and ten Caucasian men (C), between 20-31 years, were recruited. Procedures included: (a) height and weight; (b) dietary intake information using 3-day dietary record method (National Nutrient Database for Standard Reference of the United States Department of Agriculture (USDA)) for dietary intake of total energy and percentage fat; (c) completion of the International Physical Activity Questionnaire (IPAQ), which converted reports of physical activity to a continuous measure in MET-minute and then converted to kilocalories (kcal); and (d) brachial artery flow-mediated dilation (FMD) (measure of endothelial function) via high-resolution ultrasound using current guidelines. Endothelial function was expressed as a percentage change from baseline (FMD%) as well as FMD% normalized to the shear rate area under the curve until peak dilation (FMD%:SR). We hypothesized that there would be a difference in endothelial function between A and C, and the difference would be independent of energy intake and physical activity. ANCOVA (fat% in diet and physical activity as covariates) was used to find out difference in FMD between two ethnicities. RESULTS: There were no significance differences in endothelial function between A (FMD% = 6.29 ± 3.6%, FMD%:SR = 1.27 ± 1.2 AU) and C (FMD% = 4.63 ± 2.6%, FMD%:SR = 1.62 ± 1.1 AU) (p > 0.05). Independent t-test revealed that there were significant differences in energy intake (A vs C: 2062.22 ± 534.32 kcal vs 2661.17 ± 554.20 kcal) and percentage of dietary fat (A vs C: 32.34 ± 8.06% vs 25.98 ± 6.37%) but not physical activity (A=465.28 ± 323.21 kcal/day vs. C =824.27 ± 636.76 kcal/day). CONCLUSIONS: Despite the difference in energy intake and percentage of dietary fat between Asians and Caucasians, there was no difference in endothelial function between the two ethnicities.
A Review on Thermal Conductivity of Polymer Composites Using Carbon-Based Fillers : Carbon Nanotubes and Carbon Fibers (2010)

Recently, the use of thermal conductive polymeric composites is growing up, where the polymers filled with the thermally conductive fillers effectively dissipate heat generated from electronic components. Therefore, the management of heat is directly related to the lifetime of electronic devices. For the purpose of the improvement of thermal conductivity of composites, fillers with excellent thermally conductive behavior are commonly used. Thermally conductive particles filled polymer composites have advantages due to their easy processibility, low cost, and durability to the corrosion. Especially, carbon-based 1-dimensional nanomaterials such as carbon nanotube (CNT) and carbon nanofiber (CNF) have gained much attention for their excellent thermal conductivity, corrosion resistance and low thermal expansion coefficient than the metals. This paper aims to review the research trends in the improvement of thermal conductivity of the carbon-based materials filled polymer composites.
The analyzing power Ay(θ) for 12(n[downward right arrow],n0,1)12C from 9 to 16.8 MeV (1981)

The analyzing power Ay(θ) for 12C(n↘,n0,1)12C has been measure between 9 and 16.8 MeV incident neutron energy using the polarization transfer reaction 2H(d↘,n↘)3He. The pulsed and polarized deuteron beam of the TUNL polarized ion source was used in conjunction with conventional neutron time‐of‐flight detection techniques. The data are intended to test reaction models and to enable multiple scattering corrections to be determined for previously obtained high precision n‐p scattering data.
Inspection Policies for A System which Is Inoperative During Inspection Periods (1977)

Abstract Inspection policy models deal with stochastically failing systems in which failures are detected by inspections only. In this paper we examine a model for a system which is inoperative during the inspection periods. This problem is important in situations where inspections demand a considerable amount of time, such as the inspection of production machines, inspection of communication systems, aircraft maintenance, etc. The costs incurred include the cost of inspections, the cost per time unit of unobserved breakdowns, and the cost of repairing (or replacing) the failed system. The objective is to minimize the expected total cost per time unit. Minimization of the system's unavailability is obtained as a special case by appropriate substitutions.
Photovoltaic characteristics of MOS structure with photo enhanced trap assist tunneling current by oxide etching (2011)

In this work, MOS photovoltaic mechanism with side wall trap-assist tunneling path by oxide etching was demonstrated. It was clearly observed that the photo response of device with oxide etching is tremendously enhanced with respect to that without. The efficiency of MOS photovoltaic with side wall trap-assist tunneling is strongly dependent on the etched potion of oxide. The perimeter of electrode is critical for MOS photovoltaic application.
System level testing of analog functions in a mixed-signal circuit (2002)

This paper outlines the problems of testing analog circuits in general and those in a mixed-signal integrated circuit in particular. It proposes a system level testing technique based on the excitation of the circuit-under-test with a pseudo-random binary sequence and subsequent estimation of its impulse response. The fault detection capability of the test and data analysis methods are demonstrated by simulation results. It also shows a feasible test structure that can be incorporated on chip to test the analog functions.
Manipulation of in vivo pollination techniques to improve the fertilization efficiency of interspecies crosses in the genus Phaseolus (2007)

Abstract Phaseolus angustissimus A. Gray contains genes for traits of interest for dry bean ( P. vulgaris ) breeders. F 1 hybrids can be produced but introgression through backcrossing has been a problem. One of the main impediments is the time required between pollination and fertilization when F 1 hybrids of P. vulgaris / P. angustissimus are backcrossed with P. vulgaris . In an attempt to reduce this time, the effect of alternative pollination techniques was studied. The rate and the time of fertilization were ascertained using three different pollen types (pollen germinated in vitro , fresh pollen (FP) mixed in pollen‐germinating media and FP), and two methods of pollination (cut‐style and stigmatic pollinations). An optimal in vitro pollen germination medium for Phaseolus pollen was developed. Low temperatures (6–9°C) were demonstrated to be necessary for Phaseolus pollen germination. Pollination using a cut‐style technique coupled with pregerminated pollen reduced the time for fertilization in the backcrosses of interspecies hybrids by approximately 28 h. This technique improved the success rate of fertilization in wide crosses of Phaseolus designed to introgress genes from wild relatives.
Prospective Study of Serial 18F-FDG PET and 18F-Fluoride PET to Predict Time to Skeletal-Related Events, Time to Progression, and Survival in Patients with Bone-Dominant Metastatic Breast Cancer (2018)

Assessing therapy response of breast cancer bone metastases is challenging. In retrospective studies, serial <sup>18</sup>F-FDG PET was predictive of time to skeletal-related events (tSRE) and time to progression (TTP). <sup>18</sup>F-NaF PET improves bone metastasis detection compared with bone scanning. We prospectively tested <sup>18</sup>F-FDG PET and <sup>18</sup>F-NaF PET to predict tSRE, TTP, and overall survival (OS) in patients with bone-dominant metastatic breast cancer (MBC). <b>Methods:</b> Patients with bone-dominant MBC were imaged with <sup>18</sup>F-FDG PET and <sup>18</sup>F-NaF PET before starting new therapy (scan1) and again at a range of times centered around approximately 4 mo later (scan2). Maximum standardized uptake value (SUV<sub>max</sub>) and lean body mass adjusted standardized uptake (SUL<sub>peak</sub>) were recorded for a single index lesion and up to 5 most dominant lesions for each scan. tSRE, TTP, and OS were assessed exclusive of the PET images. Univariate Cox regression was performed to test the association between clinical endpoints and <sup>18</sup>F-FDG PET and <sup>18</sup>F-NaF PET measures. mPERCIST (Modified PET Response Criteria in Solid Tumors) were also applied. Survival curves for mPERCIST compared response categories of complete response+partial response+stable disease versus progressive disease for tSRE, TTP, and OS. <b>Results:</b> Twenty-eight patients were evaluated. Higher <sup>18</sup>F-FDG SUL<sub>peak</sub> at scan2 predicted shorter time to tSRE (<i>P</i> = <0.001) and TTP (<i>P</i> = 0.044). Higher <sup>18</sup>F-FDG SUV<sub>max</sub> at scan2 predicted a shorter time to tSRE (<i>P</i> = <0.001). A multivariable model using <sup>18</sup>F-FDG SUV<sub>max</sub> of the index lesion at scan1 plus the difference in SUV<sub>max</sub> of up to 5 lesions between scans was predictive for tSRE and TTP. Among 24 patients evaluable by <sup>18</sup>F-FDG PET mPERCIST, tSRE and TTP were longer in responders (complete response, partial response, or stable disease) than in nonresponders (progressive disease) (<i>P</i> = 0.007, 0.028, respectively), with a trend toward improved survival (<i>P</i> = 0.1). An increase in the uptake between scans of up to 5 lesions by <sup>18</sup>F-NaF PET was associated with longer OS (<i>P</i> = 0.027). <b>Conclusion:</b> Changes in <sup>18</sup>F-FDG PET parameters during therapy are predictive of tSRE and TTP, but not OS. mPERCIST evaluation in bone lesions may be useful in assessing response to therapy and is worthy of evaluation in multicenter, prospective trials. Serial <sup>18</sup>F-NaF PET was associated with OS but was not useful for predicting TTP or tSRE in bone-dominant MBC.
Recent Advances in Implantable Antennas for Medical Telemetry [Education Column] (2012)

Implantable medical devices (IMDs) have recently been receiving considerable attention for medical diagnosis and treatment. Some of the most crucial scientific challenges for implantable medical devices are related to the implantable antenna, which is integrated into the implantable medical device to allow its bidirectional communication with exterior monitoring/control equipment. The aim of this paper is to provide an overview of the research efforts carried out by the authors regarding the numerical design, experimental testing, and performance evaluation of implantable antennas for medical telemetry.