gebhart/patrepeval huggingface dataset:
Moving Object Detection in Video Streams Received from a Moving Camera. (2014)

Abstract. Detection of moving objects in a video stream received from a moving camera is difficult computer vision task, because the motion of the camera blends with the motion of the objects in the scene. In order to tackle this problem, we propose a method based on optical flow cal-culation and Delaunay triangulation. Given a sequence of frames, firstly, we extract the corner feature points using ORB algorithm and compute optical flow vectors at the extracted feature points. Secondly, we sepa-rate the optical flow vectors using K-Means clustering method. Third, we classify each cluster into camera and object motion using its mean scatter value. Finally, we represent the moving object using Delaunay triangulation. Keywords:moving objects, moving camera, unstable background, ORB, optical flow, clustering, Delaunay triangulation 1
Effects of polyphyllin D, a steroidal saponin in<i>Paris Polyphylla</i>, in growth inhibition of human breast cancer cells and in xenograft (2005)

Paris polyphylla is a traditional Chinese Medical herb that has been used in treating cancer for thousands of year. Without studies on the anticancer effects of Paris polyphylla being initiated before, we have first studied the component of Paris polyphylla and have spotted out a steroidal saponin, polyphyllin D. As long as the chemical structure and the improved synthesis of polyphyllin D were ascertained, both in vitro to in vivo studies were performed. It was found that treatment of MCF-7 and MDA-MB-231 cells with polyphyllin D resulted in the inhibition of viability and induction of apoptosis in a dose-dependent manner, with an IC50 of 5 microM and 2.5 microM, respectively, after 48 hours of incubations. Apoptosis of MCF-7 and MDA-MB-231 cells by polyphyllin D was evidenced by the occurrence of DNA fragmentation, formation of a hypodiploid peak in the cell cycle analysis, phosphatidyl-serine externalization and a late loss of membrane integrity. Mechanistically, polyphyllin D dissipates the mitochondrial membrane potential, induces a downregulation of anti-apoptotic Bcl-2 expression and an up-regulation of pro-apoptotic Bax expression, and activates caspase-9. These results suggest that polyphyllin D elicits apoptosis through mitochondria dysfunction. In vivo study demonstrated that daily administration of polyphyllin D (2.73 mg/kg body weight) through intravenous injection for ten days in nude mice bearing MCF-7 cells effectively reduced tumor growth for 50% in terms of tumor weight and size, given no significant toxicity in heart and liver to the host. All these findings provide novel insights that polyphyllin D could serve as a candidate in breast cancer treatment.
Automating Single Subunit Counting of Membrane Proteins in Mammalian Cells (2012)

Elucidating subunit stoichiometry of neurotransmitter receptors is preferably carried out in a mammalian expression system where the rules of native protein assembly are strictly obeyed. Although successful in Xenopus oocytes, single subunit counting, manually counting photobleaching steps of GFP-tagged subunits, has been hindered in mammalian cells by high background fluorescence, poor control of expression, and low GFP maturation efficiency. Here, we present a fully automated single-molecule fluorescence counting method that separates tagged proteins on the plasma membrane from background fluorescence and contaminant proteins in the cytosol or the endoplasmic reticulum and determines the protein stoichiometry. Lower GFP maturation rates observed in cells cultured at 37 °C were partly offset using a monomeric version of superfolder GFP. We were able to correctly identify the stoichiometry of GluK2 and α1 glycine receptors. Our approach permits the elucidation of stoichiometry for a wide variety of plasma membrane proteins in mammalian cells with any commercially available TIRF microscope.
Scalable queue-based spin locks with timeout (2001)

Queue-based spin locks allow programs with busy-wait synchronization to scale to very large multiprocessors, without fear of starvation or performance-destroying contention. So-called try locks , traditionally based on non-scalable test-and-set locks, allow a process to abandon its attempt to acquire a lock after a given amount of time. The process can then pursue an alternative code path, or yield the processor to some other process. We demonstrate that it is possible to obtain both scalability and bounded waiting, using variants of the queue-based locks of Craig, Landin, and Hagersten, and of Mellor-Crummey and Scott. A process that decides to stop waiting for one of these new locks can ``link itself out of line'' atomically. Single-processor experiments reveal performance penalties of 50--100\% for the CLH and MCS try locks in comparison to their standard versions; this marginal cost decreases with larger numbers of processors. We have also compared our queue-based locks to a traditional \tatas\ lock with exponential backoff and timeout. At modest (non-zero) levels of contention, the queued locks sacrifice cache locality for fairness, resulting in a worst-case 3X performance penalty. At high levels of contention, however, they display a 1.5--2X performance advantage , with significantly more regular timings and significantly higher rates of acquisition prior to timeout.
Effect of Cross Section of Spandex Yarn on Air Drag. (1997)

The effect of the yarn cross section on the air drag coefficient and the characteristic length was examined for the spandex yarn that doesn't have a circular cross section.The way to estimate the air drag of spandex yarns in axisymmetric air flow are investigated.Results obtained are as follows. (1) The air drag coefficient of the spandex yarn shows similar tendency to the effect of the flat plate rather than those of sylindrical curvature appeared in the thin yarn because it has remarkable irregularities in its cross section. (2) The drag coefficient for the fixed end yarn is the same value as that for flat plate.And the drag coefficient for the free end yarn is twice for that. (3) It is effective and actually reasonable for the characteristic length of the spandex yarn to use the diameter that is converted from the yarn perimeter length without any consideration to its irregularity.
Iron-Refractory Iron Deficiency Anemia (2015)

Iron is essential for life because it is indispensable for several biological reactions, such as oxygen transport, DNA synthesis, and cell proliferation. Over the past few years, our understanding of iron metabolism and its regulation has changed dramatically. New disorders of iron metabolism have emerged, and the role of iron as a cofactor in other disorders has begun to be recognized. The study of genetic conditions such as hemochromatosis and iron-refractory iron deficiency anemia (IRIDA) has provided crucial insights into the molecular mechanisms controlling iron homeostasis. In the future, these advances may be exploited to improve treatment of both genetic and acquired iron disorders. IRIDA is caused by mutations in TMPRSS6, the gene encoding matriptase-2, which downregulates hepcidin expression under conditions of iron deficiency. The typical features of this disorder are hypochromic, microcytic anemia with a very low mean corpuscular volume of erythrocytes, low transferrin saturation, no (or inadequate) response to oral iron, and only a partial response to parenteral iron. In contrast to classic iron deficiency anemia, serum ferritin levels are usually low-normal, and serum or urinary hepcidin levels are inappropriately high for the degree of anemia. Although the number of cases reported thus far in the literature does not exceed 100, this disorder is considered the most common of the "atypical" microcytic anemias. The aim of this review is to share the current knowledge on IRIDA and increase awareness in this field.
Heliox Improves Oxygen Delivery and Utilization during Dynamic Exercise in Patients with Chronic Obstructive Pulmonary Disease (2009)

Heliox increases lower limb O(2)DEL and utilization during dynamic exercise in patients with moderate to severe COPD. These effects enhance exercise tolerance in this patient population.
<title>FPGA/FPAA-based rapid prototyping environment for mixed signal systems</title> (1999)

In this paper, we present a rapid prototyping environment for mixed signal systems. The environment consists of programmable mixed signal hardware together with a set of integrated CAD tools to enable fast prototyping of mixed signal designs from high-level specifications. The prototyping hardware comprises of field-programmable analog arrays and field-programmable gate arrays on which the analog and digital sections of the design are respectively implemented. Field-programmable interconnect routes signals between multiple devices. A bank of data converters constitutes the interface between the analog and digital parts. Design tools are required to map the given design onto the prototyping hardware. The high-level design specification is first compiled into an intermediate format suitable for synthesis. Following this, the design is partitioned into analog and digital sections. The analog and digital subsystems are synthesized for the target FPAA and FPGA devices respectively. Configuration bitstreams are generated and downloaded on to the respective devices.
Determination of volatile fatty acids (C<sub>2</sub>—C<sub>5</sub>) and lactic acid in silage by gas chromatography (1987)

A gas chromatographic procedure using a graphitised carbon black packing coated with Carbowax 20M has been developed for the determination of volatile fatty acids and lactic acid in silage. This packing gave improved results compared with porous polymer column materials. The method was precise (relative standard deviation for each acid 0.5–5%) and gave a quantitative recovery of acids spiked into silage extracts (98–109%). The results for the determination of lactic acid in silage obtained by the GC procedure were in good agreement with results obtained by a classical distillation procedure; however, the GC method was more selective, more precise and less time consuming. The method has been shown to be of value in the determination of volatile fatty acids and lactic acid in connection with the assessment of silage quality.
Role of PhoP∼P in Transcriptional Regulation of Genes Involved in Cell Wall Anionic Polymer Biosynthesis in <i>Bacillus subtilis</i> (1998)

tagA, tagD, and tuaA operons are responsible for the synthesis of cell wall anionic polymer, teichoic acid, and teichuronic acid, respectively, in Bacillus subtilis. Under phosphate starvation conditions, teichuronic acid is synthesized while teichoic acid synthesis is inhibited. Expression of these genes is controlled by PhoP-PhoR, a two-component system. It has been proposed that Pho-P plays a key role in the activation of tuaA and the repression of tagA and tagD. In this study, we demonstrated the role of Pho-P in the switch process from teichoic acid synthesis to teichuronic acid synthesis, by using an in vitro transcription system. The results indicate that PhoP approximately P is sufficient to repress the transcription of the tagA and tagD promoters and also to activate the transcription of the tuaA promoter.
Red cell aging in vivo (1971)

Previous studies of red cell structure and metabolism during the aging process have relied upon in vitro techniques of cell separation into various age populations. Probably the most common approach is to isolate the older red cells with the assumption that they are more dense. This may lead to a number of inconsistencies in observations, and may certainly raise questions about possible cell changes secondary to manipulative procedures. For this reason, an experimental system was devised where a normal red cell population could be studied, while aging, in an in vivo environment. The initial red cell mass of a large number of inbred rats was transferred repeatedly into an ever smaller number of animals, making it possible to follow an aging population of red cells up to 48 days while preventing contamination with newly produced cells by suppression of erythropoiesis with transfusion-induced polycythemia. During this period, samples of progressively older red cells could be obtained for measurements of red cell constant. It was noted that the normal rat red cell undergoes both volume reduction and significant hemoglobin content loss with aging. In addition, the hemoglobin concentration within the cell demonstrated an early rise after a return to nearly normal values. These findings are noteworthy in that they help to explain the characteristics of life-spans of cohort labeled red cell populations in small animals, and provide a possible example of a cell's remodeling process within the spleen.
WRC Newsletter (Oct 1999) (1999)

~ ~ , , ' " " The W.aterResourees Center is or~anisms \vithand Wi~out added 'civil engineering, Susan.Barri,ck.' .funding three 'reseatchprojecis out .of nhancements.These successes' .doctoral candidate, geosciences, eight pfopo~als that were submitted for inclwie the ~ioldgical remediation, of .Necip Gilven, professor of geo-.. consideration fOf this ftscal year.The. petrQleum olltaminated water and sciences, B~rold Gurrola, assistant selection process is.conducted .With thesediment,~d now wid~spreadu:se of p:(ofe$sor 'ofgeQsciences: .' assistance of a team of extern'alre~ anaerobic biologicaldegtadation " .Lacustrine sediments that cont~in viewers familiar'With the goa.ls and .' (mittmil attenuation) of chlorinated' , hlghiysaline'groundwater occur .objectives oftlle'WRC: "I'mvery ", sO,lvents.Perclilorate(CI0 4 -orPC) naturally witllin'theHigh Plafu:~ pleased with theTallge of problemsdegradation~I>ears to be similar to aquifedn th~ Rl:ownf1eld 13asin area that were addressed in the . of east em Terry Coun.ty;In the proposals
Adaptive equalizer using finite-bit power-of-two quantizer (1986)

The stochastic gradient algorithm using a simplified arithmetic is analyzed in this paper. A power-of-two quantizer is used for the input of the multiplier to reduce the multiplication to at most a simple shift. In spite of its simple implementation, the performance is shown to be comparable to the classical LMS algorithm. A linearized approximation to the quantizer is first derived, followed by the analysis of an exact nonlinear model. The derivation is based on the Gaussian assumption, and the effects of removing the Gaussian assumption are later considered. The roundoff error due to the finite-bit computation is calculated. Computer simulation results are provided to support the analysis.
Can Trade Policies Soften the Economic Impacts of an Avian Influenza Outbreak? Simulations From a CGE Model of the Philippines (2007)

The paper examines the possibilities of using trade policy to address the adverse economic effects of an avian influenza outbreak in the Philippines. In particular, it employs a computable general equilibrium (CGE) model for analyzing the likely effects of two options; namely, a) a ban on imported poultry, and b) the removal of tariffs on non-poultry meat products. Using six model scenarios (i.e., production shocks, consumption shocks, ban on poultry imports, removal of tariff on non-poultry imports, and selected combinations of these shocks), the simulation results reveal that (a) the consumption and production shocks are expected to have a contractionary effect on real GDP; (b) the expected fall in the output of poultry products explains most of the decline in real GDP; (c) the production shock appears to have a larger impact since this explains most of the decline in real GDP as well as the increase in the general price level; (d) while the consumption shock tends to have a larger impact on the poultry products, the production shock dominates the aggregate responses because of its effects on other industries, and (e) avian influenza is likely to have far-reaching effects on the economy, way beyond the poultry sector. Based on these results, this paper supports the use of an import ban as a preventive measure against the occurrence of an avian influenza attack. This is based on the finding that the economic costs from such a measure appear to be lower than the costs associated with the disease. In contrast, the study finds that there is a weak case for removing tariffs on non-poultry meat products as a means to soften the harmful impacts of an avian influenza outbreak.
Determination of air-water Henry's law constants for hydrophobic pollutants (1979)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of air-water Henry's law constants for hydrophobic pollutantsDonald Mackay, Wan Ying Shiu, and Russell P. SutherlandCite this: Environ. Sci. Technol. 1979, 13, 3, 333–337Publication Date (Print):March 1, 1979Publication History Published online1 May 2002Published inissue 1 March 1979https://pubs.acs.org/doi/10.1021/es60151a012https://doi.org/10.1021/es60151a012research-articleACS PublicationsRequest reuse permissionsArticle Views1799Altmetric-Citations284LEARN 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
Application of Color Coding in Tactical Display S-3A. (1980)

The present effort was designed to examine the literature on color coding in terms of the incorporation of color in tactical displays aboard the S-3A. Available literature could be conveniently separated into work concentrating on visual functioning, display/environmental factors, task/performance variables. Overall the results do not strongly support the inclusion of color in S-3A tactical displays. In the event color is incorporated, its usage should be at the control of the operator. (Author)
IMPROVEMENT OF THE MAGNETIC PROPERTIES OF Nd 2 Fe 14 B POWDERS BY DYSPROSIUM DIFFUSION (2011)

Dysprosium powders were diffused into Nd 2 Fe 14 B magnetic powders to improve their magnetic properties. Initial powders, Nd 12.5 Ga 0.3 Nb 0.2 B 6.4 Fe bal. alloys, were prepared by HDDR process. For diffusion, DyH x powders were pulverized by zirconia-ball under Ar gas for 5-20 hours. The powders were mixed at a ratio of DyH x :Nd 2 Fe 14 B=3.4:96.6 and heated to 700-800 k C under vacuum (� 10 -6 torr) for 0.5-16 hours. Their magnetic properties were then measured by VSM, Phases and resulting microstructures were analyzed by XRD and SEM-EDX. The optimum diffusion condition occurred with heating to 800 k C for 2 hr, the resulting magnetic powders had the high coercivity of > 12.2 kOe.
A 105.6dB DR and 65dB peak SNR self-reset CMOS image sensor using a Schmitt trigger circuit (2011)

A self-reset pixel level CMOS image sensor (CIS) is designed and tested which provides simultaneous improvements in dynamic-range (DR) and SNR performances. The pixel is fabricated in 0.5-µm 3-metal 2-poly CMOS technology and resulted in DR of 105.6dB with 65dB of peak SNR improvements. A simple Schmitt trigger circuit with offset cancellation technique is utilized to achieve this performance which compensates for the reset offset, comparator offset and reset delay.
Laminar dispersion in capillaries: Part I. Mathematical analysis (1965)

Abstract Since 1953, when G. I. Taylor first considered the problem, numerous studies of the miscible displacement of fluids in capillaries have produced several approximate mathematical solutions which are purported to be valid under different conditions. Their form and ranges of applicability have been in conflict to some extent, since no exact solution is available to check these expressions. This study has resulted in exact numerical solutions to this problem with both axial and radial molecular diffusion accounted for. The range of parameters investigated is wide enough for comparison with all known analytical and empirical results and covers τ from 0.01 to 30 and N Pe from 1 to 23,000. It is shown that for sufficiently large values of τ the Taylor‐Aris theory is valid and thus results for all τ and N Pe of any practical interest are now known. Axial molecular diffusion is significant at lower values of the Peclet number but the magnitude of N Pe at which this occurs depends on the value of τ. In general, axial molecular diffusion is important for Peclet numbers less than about 100. Present results show that there is no justification for Bailey and Gogarty's empirical modification which yields an exponent of 0.541 rather than 0.50 for τ in Equations (35) and (36). Also, for the system studied here, no justification was found for the conjecture of Bournia et al. that Aris' low N Pe modification may not account for axial diffusion properly. Simple expressions given by Equations (48) and (50) were developed empirically and they give with good accuracy the average concentration distribution over wider ranges of N Pe and τ than previously reported expressions.
A new portable telegraph transmission measuring set (1954)

THE provision of good telegraph service requires that the circuits be designed, engineered, and maintained so as to afford good transmission quality. The measurement of a single quantity, known as telegraph distortion,1 at the receiving end is sufficient to establish the transmission quality since it contains all signal degrading effects, such as interference, poor relay performance, and wave-shape distortion. Therefore, the ability to measure distortion conveniently and accurately is of prime importance.
William P. Callahan, JR., M.D. 1917–1971 (1972)

Journal Article William P. Callahan, JR., M.D. 1917–1971 Get access William O. Russell, M.D. William O. Russell, M.D. Houston, Texas 77025 Search for other works by this author on: Oxford Academic Google Scholar American Journal of Clinical Pathology, Volume 57, Issue 1, 1 January 1972, Pages 126–127, https://doi.org/10.1093/ajcp/57.1.126 Published: 01 January 1972