gebhart/patrepeval huggingface dataset:
Beyond Cell Capture: Antibody Conjugation Improves Hemocompatibility for Vascular Tissue Engineering Applications (2010)

Antibody-conjugated surfaces are being studied for cardiovascular implant applications to capture endothelial progenitor cells and promote endothelialization. However, despite the large amount of literature on endothelial progenitor cell capture efficiency, little effort has been made to understand acute blood responses to the modified surfaces. We hypothesize that CD34 antibody conjugation passivates surfaces against procoagulatory events, and thus improves hemocompatibility. To test this hypothesis, we subjected the modified films to hemocompatibility tests to evaluate contact activation, platelet adhesion and activation, as well as whole blood clotting response to the films. Here, we demonstrate the alteration of blood responses due to polyacrylic acid (PAAc) engraftment and subsequent antibody conjugation on biaxially stretched polycaprolactone (PCL) films. Compared to PCL, PAAc-engrafted PCL (PCL-PAAc) and CD34-antibody-conjugated films (PCL-PAAC-CD34) resulted in a four- to ninefold (p < 0.001) reduced platelet activation. PCL-PAAc, however, resulted in an increased contact activation on thromboelastography, and a poorer blood compatibility index assay (43.4% +/- 2.3% vs. 60.9% +/- 2.5%, p < 0.05). PCL-PAAC-CD34, on the other hand, resulted in delayed clot formation (r = 19.3 +/- 1.5, k = 6.8 +/- 0.6 min) and reduced platelet adhesion and activation, and yielded the highest blood compatibility index score, indicating least thrombogenicity (69.3% +/- 3.2%). Our results suggest that CD34 antibody conjugation significantly improved the hemocompatibility of PAAc-conjugated PCL.
A new simple and robust control strategy for wind farm reactive power regulation (2003)

Since electrical systems endowed with variable generating units are called to dominate the electrical landscape in the near future, it is necessary to develop new tools that will allow working efficiently. In this forthcoming environment. Wind power generation is becoming one of the most important renewable energy sources. In Spain and, consequently, the simulation of wind farm power performance will probably become an essential tool so as to suggest appropriate locations for new farms. Additionally, their active/reactive power regulation possibility may turn out to be very significant in the decision making process for the generator type to be installed in each wind farm. This paper presents a reactive power regulation algorithm for wind farms made up with doubly fed induction machines (DFIM), together with simulation results corresponding to the developed control algorithm, as well as experimental results obtained when implementing it in a wind farm placed in the north of Spain.
Laminography in the lab: imaging planar objects using a conventional x-ray CT scanner (2019)

Whilst x-ray micro Computed Tomography (CT) machines have developed into a popular laboratory tool for non-destructive 3D imaging of materials, they are not well-suited for scanning flat objects for which there is an increasing demand. Computed Laminography (CL) techniques have been developed for imaging planar samples such as fossils, paintings, printed circuit boards and composite panels. This paper is the first work demonstrating how CL may be implemented on a conventional industrial laboratory micro-CT scanner, without the need for specialist equipment. A rotary CL scan configuration (also known as tilted or oblique CT) was successfully implemented, and the projection images reconstructed using the Conjugate Gradient Least Squares (CGLS) method. Computer simulations were used to analyse the causes of image artefacts seen in the cone-beam CL reconstructions, and to devise corrections for them. The resulting laboratory CL method produces reconstructions with fewer artefacts and a more isotropic resolution compared to limited-angle scan configurations otherwise used for planar samples. This demonstrates that CL can be performed in the laboratory without specialist equipment beyond that required for standard CT.
Polio - An Endemic Disease in Pakistan: Literature Review (2015)

Poliomyelitis is a highly contagious and incurable disease, which mainly affects children under five years of age leading to irreversible paralysis and possibly death. For decades, both private and government organizations have been putting efforts through their partnership to eradicate polio completely from the different parts of the globe and as a result of those efforts there are left only three countries which are currently polio endemic. Since Pakistan is one of those three countries which still remain polio endemic along with Afghanistan and Nigeria, it is significant to address this issue and work on the preventive measures to control the incidence of such a lethal disease. In Pakistan, a program was introduced on immunization in 1978, known as Expanded Program on Immunization (EPI). The main purpose of EPI was to reduce the burden of diseases like polio and tetanus. Although the number of polio cases has fallen due to the classic efforts of government and other NGOs, polio is not eradicated from Pakistan. This situation is thought provoking. Even after the great global efforts; polio is not eradicated from Pakistan. Multiple factors might have prevented the eradication of this deadly disease from our society.
Theory of a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>He</mml:mi><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts></mml:math> parametric-resonance magnetometer based on atomic alignment (2018)

In parametric-resonance magnetometers (PRMs), optically pumped atoms subject to rf fields allow one to measure the components of a very low magnetic field. Here, instead of using a circularly polarized light for creating atomic orientation, as in previous works, a linearly polarized light is used for creating atomic alignment. A dressed-atom formalism introduced by Polonsky and Cohen-Tannoudji is extended and allows one to map this situation to a simpler Hanle effect on aligned atoms. Analytical expressions for all alignment tensor components and photodetection signals are obtained for both the Hanle magnetometer and PRMs. A two-rf field alignment PRM is shown to display several improvements from its orientation counterpart, providing a secular third axis sensitivity and a lower degradation from the one-axis sensitivity obtained by using a single rf field. These specificities are shown to result from the apparent depolarization of the pumping light acting on the atom dressed by two-rf fields. Experimental measurements showing a good agreement with the theoretical predictions are presented.
An authorization model for XML databases (2004)

In this paper, we define a security model for a native XML database which supports the Xupdate language. Our model is inspired by the SQL security model which is the most famous security model for database. We first define a generic access control model for tree data structures. Then, we apply our model to an XML database which supports the Xupdate language.
Design of algorithms for phase measurements by the use of phase stepping (1996)

If the best phase measurements are to be achieved, phase-stepping methods need algorithms that are 112 insensitive to the harmonic content of the sampled waveform and 122 insensitive to phase-shift miscalibration. A method is proposed that permits the derivation of algorithms that satisfy both requirements, up to any arbitrary order. It is based on a one-to-one correspondence between an algorithm and a polynomial. Simple rules are given to permit the generation of the polynomial that corresponds to the algorithm having the prescribed properties. These rules deal with the location and multiplicity of the roots of the polynomial. As a consequence, it can be calculated from the expansion of the products of monomials involving the roots. Novel algorithms are proposed, e.g., a six-sample one to eliminate the effects of the second harmonic and a 10-sample one to eliminate the effects of harmonics up to the fourth order. Finally, the general form of a self-calibrating algorithm that is insensitive to harmonics up to an arbitrary order is given.
Analogous effects of recombinant human full‐length amelogenin expressed by <i><scp>P</scp>ichia pastoris</i> yeast and enamel matrix derivative <i>in vitro</i> (2012)

rHhAm175 modulated cell activities of human PDLFs, to a comparable extent as porcine EMD. These data suggest that rHhAm175 might be used to induce periodontal tissue regeneration.
Music in the exercise domain: a review and synthesis (Part I) (2011)

Since a 1997 review by Karageorghis and Terry, which highlighted the state of knowledge and methodological weaknesses, the number of studies investigating musical reactivity in relation to exercise has swelled considerably. In this two-part review paper, the development of conceptual approaches and mechanisms underlying the effects of music are explicated (Part I), followed by a critical review and synthesis of empirical work (spread over Parts I and II). Pre-task music has been shown to optimise arousal, facilitate task-relevant imagery and improve performance in simple motoric tasks. During repetitive, endurance-type activities, self-selected, motivational and stimulative music has been shown to enhance affect, reduce ratings of perceived exertion, improve energy efficiency and lead to increased work output. There is evidence to suggest that carefully selected music can promote ergogenic and psychological benefits during high-intensity exercise, although it appears to be ineffective in reducing perceptions of exertion beyond the anaerobic threshold. The effects of music appear to be at their most potent when it is used to accompany self-paced exercise or in externally valid conditions. When selected according to its motivational qualities, the positive impact of music on both psychological state and performance is magnified. Guidelines are provided for future research and exercise practitioners.
The Use of Cytotoxic Plant Lectins in Cancer Therapy (1987)

As part of their defense mechanism against herbivores or phytophagous insects, many plant tissues contain lectins. Some of these lectins are potent toxins which kill animal cells by arresting protein synthesis. An attractive strategy for developing specifically cytotoxic chemotherapeutic agents is to link cell type-specific monoclonal antibodies to potent toxins. The plant protein ricin has emerged as the toxin of choice for such constructs.
Adsorption of Phosphorus in Aqueous Solution by Calcined Rare Earth Slag and Its Mechanism (2014)

Rare earth slag from South Jiangxi,China,was prepared into a promising low-cost adsorbent(CRES) through carcination for phosphorus removal in phosphorus over-loaded wastewater. To characterize CRES systematically,a number of modern equipment,such as scanning electron microscope(SEM),infrared spectroscopy( FTIR),X-ray fluorescence(XRF),specific surface area analyze(BET-BJH) and thermogravimetric analysis(TGA) were used. Phosphorus adsorption and desorption processes of CRES were studies by means of adsorption isotherm and adsorption kinetics. Effect of pH of the solution on P adsorption by CRES was also explored. Results show that CRES has a well-developed porous structure,containing various metal elements and metalloid element compounds,such as Ba,V,Si,Y,Ca,Fe,Yb,etc.,on its surface. Solution pH,ranging from 2. 2 to 10. 0,did not affect much on its P adsorption capacity. Additionally,desorption of phorsphorus-loaded CRES was investigated in different aqueous solutions. It was found that the P desorption rate was much higher in HCl solution than in any other others. The Langmuir model was found to be good in describing the P adsorption isotherm(R2= 0. 932 5,n = 5) of CRES. The maximum PO43-adsorption capacity of CRES could be as high as 152mg·g- 1,higher than any other adsorbents' previously reported. P adsorption kinetics tests reveal that its P adsorption reached equilibrium pretty soon,only after 4- 6 min,of which the process could be well described with Ho's pseudo-secondorder kinetic model,implying that chemisorption was the dominant mechanism of the P adsorption of CRES. Chemisorption was related to surface functional groups of CRES and coordination effect. Furthermore,physisorption was also involved in this adsorption process,but mainly occurred at the initial stage of the adsorption process. Physisorption was related to various metal /metalloid elements contained in the surface as well as the well developed porous structure of CRES.
Research Directions for Big Data Graph Analytics (2015)

In the era of big data, interest in analysis andextraction of information from large data graphs is increasingrapidly. This paper examines the field of graph analytics fromsomewhat of a query processing point of view. Whether it bedetermination of shortest paths or finding patterns in a datagraph matching a query graph, the issue is to find interestingcharacteristics or information content from graphs. Many ofthe associated problems can be abstracted to problems onpaths or problems on patterns. Unfortunately, seemingly simpleproblems, such as finding patterns in a data graph matching aquery graph are surprisingly difficult. In addition, the iterativenature of algorithms in this field makes the simple MapReducestyle of parallel and distributed processing less effective. Still,the need to provide answers even for very large graphs isdriving the research. Progress, trends and directions for futureresearch are presented
A New, Cryoprecipitate Based Coating for Improved Endothelial Cell Attachment and Growth on Medical Grade Artificial Surfaces (1994)

Monoprotein coatings of biomaterials with either natural adhesion molecules or genetically designed analogs have been used to facilitate attachment and spreading of endothelial cells. However, such treatments were found insufficient to maintain the integrity of the endothelial surface under turbulent flow conditions. In addition, when brought into contact with blood, these coatings were susceptible to plasma and cell proteinases that could readily destroy their structure and weaken cell adherence to the surface. In addressing these problems, we developed a cryoprecipitate-based coating that can firmly bind to any nonporous, prosthetic surface and interact with endothelial cells. The primary structure of the coating consisted of an autologous fibrin meshwork. It was refined by various compositions of the fibrinogen containing mixture and secured to polystyrene or polyurethane surfaces by dry-heat treatment. Further modulation of the coating was achieved by physically immobilizing various doses of heparin and insulin into the three dimensional matrix of the meshwork. Endothelial cells attached and grew much better on polyurethanes coated with this autologous protein complex than on a polystyrene tissue culture surface. With proper use of its capacity to mimic the properties of basal membrane, and absence of immunologic complications, the resulting coating may become an ideal multifunctional interface between cells and prosthetic materials.
The Attention Operating Characteristic: Examples from Visual Search (1978)

Even in the absence of eye movements, we show that subjects are able, upon instruction, to selectively attend to certain kinds of targets and parts of visual arrays. The major mechanism of altering attention is the switching of attention from trial to trial, although intermediate states of shared attention do occur. Attention operating characteristics are shown to be a useful way of describing such data and of assessing the compatibility of tasks to be performed simultaneously.
Los 10 principales de la Albúmina en Unidades de Cuidados Intensivos (2013)

La albúmina humana (HA) es el sustituto no sanguíneo más caro usado para tratar la hipovolemia. También es utilizado en muchos centros para corregir la hipoalbuminemia. Su utilidad, sin embargo, sigue siendo controvertida y su uso suele basarse más en la costumbre que en una base científica. La mayoría de los estudios tienen conclusiones divergentes y presentan problemas importantes: 1.- Compara el uso de la AH con otros sustitutos del plasma sin especificar claramente el tipo del sustituto utilizado. 2.- Incluyen diferentes tipos de pacientes (cirugía general, cardíaca, trauma, pacientes sépticos, quemados), con diferentes co-morbilidades. 3.- Los estudios no estaban dirigidos a alcanzar claros objetivos de volemia. 4.- Utilizan diferentes criterios de valoración para determinar los efectos beneficiosos de la albumina. Debido a su alto costo, es importante que su uso se limite a las indicaciones para las que resulta más eficaz. Esta revisión pretende analizar los 10 estudios más importantes con la finalidad de definir el papel de la AH en el entorno clínico e intentar aclara cuando resulta de utilidad su administración.
Cognitive radios for dynamic spectrum access: from concept to reality (2010)

This article provides a comprehensive survey of cognitive radio technology, focusing on its application to dynamic spectrum access, especially from the perspective of realizing consumer- oriented CR networks. We first overview the state of the art in CR technology and identify its key functions across the protocol stack, such as spectrum sensing, resource allocation, CR MAC protocol, spectrum-aware opportunistic routing, CR transport protocol, QoS awareness, spectrum trading, and security. We also review the various schemes proposed for each of these functions and discuss the suitability, advantages, and limitations of their usage in the future CR market. Finally, we introduce the activities in CR research communities and industry in terms of development of real-life applications, such as IEEE 802.22, Ecma 392, and IEEE 802.11af (also known as Wi-Fi 2.0 or White-Fi), and then identify necessary steps for future CR applications.
Measuring Bus Passenger Load by Monitoring Wi-Fi Transmissions from Mobile Devices (2014)

Uneven loading of busses degrades passengers’ travel experience for a variety of reasons. Load balancing for busses requires information about the load, both the potential passenger load at the bus stop and the actual load currently aboard travelling busses. This paper describes a feasibility study for measuring bus passenger loads by detecting the periodic network probing activity from WiFi devices built into ‘smart phones’. Our experimental results show that WiFi activity does correlate with observed passenger flow at bus stops and the load aboard a bus while en route.
Trioctahedral Smectite and Interstratified Chlorite/Smectite in Jurassic Strata of the Connecticut Valley (1981)

Abstract Trioctahedral smectite and regularly interstratified chlorite/smectite in strata of the East Berlin Formation of the Connecticut Valley are largely restricted to black shale and gray mudstone deposited in alkaline, perennial lakes. The precursor of the mixed-layer clay appears to have been a smectite. Alkaline lake waters and inherited pore waters rich in magnesium favored the transformation of smectite to mixed-layer chlorite/smectite by fixation of brucitic interlayers into the smectite unit structure. Gray mudstones containing the mixed-layer chlorite/smectite are invariably underlain by magnesium-rich black shale—a possible source of Mg for the clay mineral transformations. The black shale is composed predominantly of Mg-rich trioctahedral smectite of probable authigenic origin.
Regulation of Quantal Size by Presynaptic Mechanisms (2000)

Quantal size is often modeled as invariant, although it is now well established that the number of transmitter molecules released per synaptic vesicle during exocytosis can be modulated in central and peripheral synapses. In this review, we suggest why presynaptically altered quantal size would be important at social synapses that provide extrasynaptic neurotransmitter. Current techniques used to measure quantal size are reviewed with particular attention to amperometry, the first approach to provide direct measurement of the number of molecules and kinetics of presynaptic quantal release, and to CNS dopamine neuronal terminals. The known interventions that alter quantal size at the presynaptic locus are reviewed and categorized as (1) alteration of transvesicular free energy gradients, (2) modulation of vesicle transmitter transporter activity, (3) modulation of fusion pore kinetics, (4) altered transmitter degranulation, and (5) changes in synaptic vesicle volume. Modulation of the number of molecules released per quantum underlies mechanisms of drug action of L-DOPA and the amphetamines, and seems likely to be involved in both normal synaptic modification and disease states. Statistical analysis for examining quantal size and data presentation is discussed. We include detailed information on performing nonparametric resampling statistical analysis, the Kolmogorov-Smirnov test for two populations, and random walk simulations using spreadsheet programs.
Soluble Urokinase-type Plasminogen Activator Receptor (suPAR) and Impaired Kidney Function in the Population-based Malmö Diet and Cancer Study (2016)

The increased suPAR level at baseline was associated with a significantly higher longitudinal decline in eGFR, higher incidence of chronic kidney disease, and hospitalization due to impaired kidney function in a cohort of healthy middle-aged participants.
Linear Motor Free Piston Compressor. (1995)

Abstract : A Linear Motor Free Piston Compressor (LMFPC), a free piston pressure recovery system for fuel cell powerplants was developed. The LMFPC consists of a reciprocating compressor and a reciprocating expander which are separated by a piston. In the past energy efficient turbochargers have been used for pressure large (over 50 kW) fuel cell powerplants by recovering pressure energy from the powerplant exhaust. A free piston compressor allows pressurizing 3 - 5 kW sized fuel cell powerplants. The motivation for pressurizing PEM fuel cell powerplants is to improve fuel cell performance. Pressurization of direct methanol fuel cells will IC required if PEM membranes are to be used Direct methanol oxidation anode catalysts require high temperatures to operate at reasonable power densities. The elevated temperatures above 80 deg C will cause high water loss from conventional PEM membranes unless pressurization is employed. Because pressurization is an energy intensive process, recovery of the pressure energy is required to permit high efficiency in fuel cell powerplants. A complete LMFPC which can pressurize a 3 kW fuel cell stack was built. This unit is one of several that were constructed during the course of the program. jg
Post-Exposure Bake Temperature Considerations for High Activation Energy Resist Systems. (2000)

Polymers based on tertiary-butyl acrylate were synthesized with different compositions and glass transition temperature (Tg) values. These polymers are formulated identically and exposed under identical optical conditions. Lithographically, these polymers responded differently to different post exposure bake temperature (TPEB) conditions. In general, resist contrast, photosensitivity and PED-sensitivity improved at TPEB above polymer-Tg. The resist resolving power improved as TPEB approaches polymer-Tg. However, loss of resolution is observed at TPEB above polymer-Tg. Also, high Tg polymers show greater PEB sensitivity than the corresponding low Tg-polymers.