gebhart/patrepeval huggingface dataset:
Role of dysfunctional maternal venous hemodynamics in the pathophysiology of pre‐eclampsia: a review (2011)

The venous compartment has an important function in regulation and control of cardiac output. Abnormalities of cardiac output have been found in early gestational stages of both early- and late-onset pre-eclampsia. The venous compartment also maintains the balance between circulating and non-circulating blood volumes and regulates the amount of reserve blood stored in the splanchnic venous bed. It is well known that adaptive regulation of maternal blood volume is disturbed in pre-eclampsia. Abnormal venous hemodynamics and venous congestion are responsible for secondary dysfunction of several organs, such as the kidneys in cardiorenal syndrome and the liver in cardiac cirrhosis. Renal and liver dysfunctions are among the most relevant clinical features of pre-eclampsia. Doppler sonography studies have shown that the maternal venous compartment is subject to gestational adaptation, and that blood flow characteristics at the level of renal interlobar and hepatic veins are different in pre-eclampsia compared with uncomplicated pregnancy. In comparison to late-onset pre-eclampsia, in early-onset pre-eclampsia venous Doppler flow abnormalities are more prominent and present up to weeks before clinical symptoms. This paper reviews the growing evidence that dysfunction of maternal venous hemodynamics is part of the pathophysiology of pre-eclampsia and may perhaps be more important than is currently considered. Doppler sonography is a safe and easily performed method with which to study maternal venous hemodynamics. Therefore, exploring the role of maternal venous hemodynamics using Doppler sonography is an exciting new research topic for those who are interested in cardiovascular background mechanisms, as well as prediction and clinical work-up of pre-eclampsia.
Quinone and its derivatives for energy harvesting and storage materials (2016)

Recent advances in the design of quinone-functionalized hybrid materials are reviewed based on quinone's redox, electrical, optical, and metal chelating/reducing properties to determine these materials' applications in energy harvesting and storage systems.
A numerical procedure for simulation of hydraulically‐driven fracture propagation in poroelastic media (1990)

Abstract A procedure for numerical approximation to two‐dimensional, hydraulically‐driven fracture propagation in a poroelastic material is described. The method uses a partitioned solution procedurè to solve a finite element approximation to problems described by the theory of poroelasticity, in conjunction with a finite difference approximation for modelling fluid flow along the fracture. An equilibrium fracture model based on a generalized, Dugdale–Barenblatt concept is used to determine the fracture dimensions. An important feature is that the fracture length is a natural product of the solution algorithm. Two example problems verify the accuracy of the numerical procedure and a third example illustrates a fully‐coupled simulation of fracture propagation. Photographs taken from a high‐performance engineering workstation provide insight into the nature of the coupling among the physical phenomena.
Hybrid Analog/Digital CSI Feedback for Transmit Beamforming Systems in Time-Selective Fading Channels (2010)

In the IEEE 802.16 WiMAX standard, fixed codebooks are used for the purpose of transmitter beamforming. Transmission of the codebook indices is accomplished via digital limited feedback uplink. We propose an extension to the feedback scheme that can improve BER performance at the cost of slight increase in feedback rate. Namely, for each feedback period, we deploy an additional analog feedback symbol to encapsulate channel information that is otherwise lost in the codebook quantization process. This analog/digital hybrid feedback scheme essentially converts the fixed codebook into an adaptive one that matches the instantaneous channel condition, allowing us to properly perform beamforming in a time-selective fading channel. As verified in our simulation, the hybrid feedback scheme offers better BER performance compared to the fixed codebook pure digital feedback scheme.
Phospholipase Cζ binding to PtdIns(4,5)<i>P</i>2 requires the XY-linker region (2011)

Phospholipase C-zeta (PLCζ) is a strong candidate for the mammalian sperm-derived factor that triggers the Ca(2+) oscillations required for egg activation at fertilization. PLCζ lacks a PH domain, which targets PLCδ1 to the phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P(2)) substrate in the plasma membrane. Previous studies failed to detect PLCζ in the plasma membrane, hence the means of PLCζ binding to PtdIns(4,5)P(2) is unclear. We find that the PLCζ XY linker, but not the C2 domain, exhibits robust binding to PtdIns(4,5)P(2) or to liposomes containing near-physiological levels of PtdIns(4,5)P(2). The role of positively charged residues within the XY linker was addressed by sequentially substituting alanines for three lysine residues, K374, K375 and K377. Microinjection of these mutants into mouse eggs enabled their Ca(2+) oscillation-inducing activities to be compared with wild-type PLCζ. The XY-linker mutant proteins were purified and the in vitro PtdIns(4,5)P(2) hydrolysis and binding properties were monitored. Successive reduction of net positive charge within the PLCζ XY linker significantly affects both in vivo Ca(2+)-oscillation-inducing activity and in vitro PtdIns(4,5)P(2) interaction of mouse PLCζ. Our data suggest that positively charged residues within the XY linker play an important role in the PLCζ interaction with PtdIns(4,5)P(2), a crucial step in generating the Ca(2+) activation signal that is essential for fertilization in mammals.
Ray-tracing models and techniques for coverage prediction in urban environments (2003)

Ray-tracing algorithms, based on GO (geometrical optics) and GTD/UTD (geometrical theory of diffraction/uniform theory of diffraction) have been developed to predict characteristics of wireless propagation channel for urban microcellular environments. Several problems on how to implement these algorithms for coverage prediction are presented and some corresponding measures and proposals are also put forward in this paper.
The Pathophysiology of Gastro-oesophageal Reflux Disease: An Overview (1995)

Gastro-oesophageal reflux disease (GORD) is a multifactorial disease. Although it is primarily a motility disorder, several other disturbances can interfere and contribute to determine the severity of symptoms and the degree of lesions. In normal subjects, as in patients with pathological reflux, nearly all the episodes of reflux obey one of the following three mechanisms: (a) a transient complete relaxation of the lower oesophageal sphincter (TLOSR), (b) a transient increase in intra-abdominal pressure which overcomes the resistance of the antireflux barrier ('stress reflux') and, (c) a spontaneous reflux through a permanently hypotonic sphincter. Gastric distension is the major factor that can induce TLOSRs. Whereas, at rest, the diaphragm probably plays little role in cardial competence, diaphragmatic contraction may help prevent reflux in conditions resulting in increased abdominal pressure such as during physical activity and abdominal staining. The presence of a hiatal hernia increases susceptibility to reflux. A delayed gastric emptying may also facilitate reflux and represents a factor of resistance to antireflux therapy. Most studies in humans have shown that motor abnormalities remain unchanged after healing of oesophagitis. Acid and pepsin are the most noxious agents of the upper gastrointestinal secretions that can participate in the pathogenesis of oesophagitis. However, there is no evidence that patients with reflux have greater acid secretion than subjects without reflux. The clearance function is a two-stage phenomenon requiring first a reduction in volume by peristalsis and then chemical neutralization by saliva. Primary peristalsis is mainly responsible for the clearance of acid in both the upright and the supine positions. It takes longer to clear acid in patients with non-reducing hiatal hernia. The layer of mucus which carpets the mucosa comes from the saliva and also from the submucosal glands of the oesophagus. The paracellular pathway is the major route by which mucosal HCl enters and then damages the oesophageal epithelium. Only a minority of acid reflux episodes are accompanied by symptoms. The acid exposure during the time period that precedes a reflux episode (i.e. the acid burden) is a key factor determining whether that reflux episode will be symptomatic or asymptomatic.
Realisation of microwave brune sections (1965)

Microwave Brune sections are used for realisation of real-frequency zeros of transmission. Previous realisations of this section involve inconvenient structures, and two new realisations are described which possess considerable practical advantages.
TNF-binding protein ameliorates inhibition of skeletal muscle protein synthesis during sepsis (1999)

We examined the effects of TNF-binding protein (TNFBP) on regulatory mechanisms of muscle protein synthesis during sepsis in four groups of rats: Control; Control+TNFBP; Septic; and Septic+TNFBP. Saline (1. 0 ml) or TNFBP (1 mg/kg, 1.0 ml) was injected daily starting 4 h before the induction of sepsis. The effect of TNFBP on gastrocnemius weight, protein content, and the rate of protein synthesis was examined 5 days later. Sepsis reduced the rate of protein synthesis by 35% relative to controls by depressing translational efficiency. Decreases in protein synthesis were accompanied by similar reductions in protein content and muscle weight. Treatment of septic animals with TNFBP for 5 days prevented the sepsis-induced inhibition of protein synthesis and restored translational efficiency to control values. TNFBP treatment of Control rats for 5 days was without effect on muscle protein content or protein synthesis. We also assessed potential mechanisms regulating translational efficiency. The phosphorylation state of p70(S6) kinase was not altered by sepsis. Sepsis reduced the gastrocnemius content of eukaryotic initiation factor 2Bepsilon (eIF2Bepsilon), but not eIF2alpha. The decrease in eIF2Bepsilon content was prevented by treatment of septic rats with TNFBP. TNFBP ameliorates the sepsis-induced changes in protein metabolism in gastrocnemius, indicating a role for TNF in the septic process. The data suggest that TNF may impair muscle protein synthesis by reducing expression of specific initiation factors during sepsis.
Characterization of nitrogen bases in high-boiling petroleum distillates (1976)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCharacterization of nitrogen bases in high-boiling petroleum distillatesJ. F. McKay, J. H. Weber, and D. R. LathamCite this: Anal. Chem. 1976, 48, 6, 891–898Publication Date (Print):May 1, 1976Publication History Published online1 May 2002Published inissue 1 May 1976https://pubs.acs.org/doi/10.1021/ac60370a002https://doi.org/10.1021/ac60370a002research-articleACS PublicationsRequest reuse permissionsArticle Views159Altmetric-Citations98LEARN 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
A multivariate voicing decision rule adapts to noise, distortion, and spectral shaping (2005)

A new approach to making voiced/unvoiced decisions is presented. The technique is very accurate and dynamically adapts to a wide range of environments. Reliable decisions are achieved by using a weighted sum of multiple speech parameters. Instead of using discriminant analysis to determine the optimal weights, voiced and unvoiced frames are separated into two clusters by a multivariate clustering algorithm. Since cluster analysis requires no prior voicing information, the decision rule is computed from the incoming speech rather than from a training set. An adaptive clustering algorithm is derived which continuously adjusts the weights in response to changing speech characteristics.
A new strategy for mannose-binding lectin gene haplotyping (2002)

The mannose-binding lectin 2 (MBL2) gene is polymorphic and codes for a protein with an important role in the innate immune response, whose variants have been associated with a great number of diseases. Point variations have been described in the 5' regulatory region at positions -550 (MBL2*H or *L) and -221 (*X or *Y), in the 5' untranslated sequence at position +4 (*P or *Q), and in the coding sequence of exon 1 at codons 52, 54, and 57 (MBL2*A or D, A or B, and A or C, respectively). These can be in cis or in trans configuration. The different haplotypes influence the immunological phenotype of the individual, which makes MBL2 haplotyping very important. Previously described MBL2-typing methods do not present adequate haplotype resolution or are too complex and costly. We have developed a new MBL2-typing strategy that is economical and renders rapid and reliable results without ambiguities. We typed 202 individuals of European, 32 of African, and 16 of Oriental descent. Only five to six reactions from 10 possible PCR-SSPs (sequence-specific polymerase chain reactions) were sufficient to genotype one individual unambiguously. The reactions were specific for amplification of the variants located upstream of the coding sequence. The results were associated to the results of hybridizations of the amplified products with eight sequence-specific oligonucleotide probes (SSOP). The strategy led to identification of eight alleles: MBL2*HYPA, HYPD, LYPA, LYPB, LYPD, LYQA, LYQC, and LXPA. Their frequencies in each of the groups were similar to those of other populations studied to date, with MBL2*LYPD (g.[-550G>C; -221C>G; 4T>C; 223C>T; 230A>G; 239A>G]) being novel. All samples were found to be in Hardy-Weinberg equilibrium.
An extended token bus protocol for embedded networks (2003)

A network environment is considered that can exist in commercial and military products, such as automatic guided vehicles, that use sensors and processors for movement, attack, defense and communication. A bus protocol called IMAP (improved token bus multiaccess protocol) is proposed for these embedded networks. Two modes of operation are defined for the protocol. The normal mode occurs when token passing is done in a random order and the token remains within a cluster of active stations. For a nonuniform traffic condition, this mode of operation can be interrupted by a mode in which token bus operation is carried out and the token is passed through every station. The performance (channel utilization and delay characteristics) of IMAP are compared to those of the token bus and CSMA/CD (carrier sense multiaccess with collision detection) and shown to be superior.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
A taxonomy for cataloging LOs using IEEE educational metadata (2007)

Students' and teachers' expectations about teaching and learning have undergone a complete change lately thanks to the increasing use of information technologies. New tools are now emerging, named learning object repositories, that aim to make learning resources readily accessible to educators and learners. A learning object repository (LOR) is an electronic/digital catalog that contains digital learning content and simplifies the search for LOs by using common semantic metadata. The main problem in LOR design is to define an effective method for cataloging LO users, in order to make tailored searches conforming to users' learning or teaching needs. This paper aims to discuss this issue and propose a taxonomy for cataloguing LOs using the educational section of IEEE LOM. Finally, we have applied our taxonomy to classify LOs in the automotive field.
Surface plasmon based spectroelectrochemical tuning and sensing with gold nanoparticle dimers (2013)

I report on the electrochemical tuning of the plasmon resonances of single and strongly coupled gold nanoparticles. I combined hyperspectral dark field imaging, cyclic voltammetry, and single particle scattering spectroscopy in a purpose-built custom instrument to investigate the electrochemical sensitivity and tuning mechanisms of surface plasmon spectroscopy. Cyclic spectrovoltammetry showed that single gold nanospheres show localized surface plasmon resonance shifts and damping correlated to the total charge of the particle in accordance with recent reports by Dahlin et al. Very strongly coupled nanoparticles show a much more complex spectrovoltammetric dependence, exhibiting behavior nearly opposite that of single particles. This suggests a much larger role of surface complexation in spectroelectrochemical tuning than is assumed in the literature. These results will impact the fundamental understanding of noble metal nanoparticle-solvent interfaces and interactions, development of ultrasensitive plasmon based electrochemical sensors, and a means to explore previously unmeasured optical properties of gold halides.
Route Table Partitioning and Load Balancing for Parallel Searching with TCAMs (2007)

With the continuous advances in optical communications technology, the link transmission speed of Internet backbone has been increasing rapidly. This in turn demands more powerful IP address lookup engine. In this paper, we propose a power-efficient parallel TCAM-based lookup engine with a distributed logical caching scheme for dynamic load-balancing. In order to distribute the lookup requests among multiple TCAM chips, a smart partitioning approach called pre-order splitting divides the route table into multiple sub-tables for parallel processing. Meanwhile, by virtual of the cache-based load balancing scheme with slow-update mechanism, a speedup factor ofN-1 can be guaranteed for a system with N (N>2) TCAM chips, even with unbalanced bursty lookup requests.
A visual authoring environment for prototyping multimedia presentations (2003)

In this paper we describe an authoring environment which allows the author to set up and test a complex multimedia presentation by defining the synchronization relationships among media. The main component of the authoring environment is a visual editor based on a graph notation, in which the nodes are media objects involved in a multimedia presentation, and the edges are the synchronization relations between them. Several external representations can be generated: a timeline-based representation highlighting media sequencing, and an XML-based description suitable for further processing. An execution simulator helps the author to check the presentation behavior before delivery.
Techniques in cementing large lenses (2002)

The cementing in 1974 of the two glass components of what was the world's largest cemented doublet for the UK Schmidt telescope will be described. The subsequent final polishing and testing will be reviewed and some of the lessons learned during the cementing procedure reported.
Atmospheric correction of airborne infrared Hyperspectral images using neural networks (2010)

In this paper we present EARTH (surface Emissivity, temperature and Atmosphere Retrievals from Thermal infrared Hyperspectral image), a new method to extract spectral emissivity and surface temperature from infrared radiances measured by an airborne hyperspectral sensor. The method solves two underlying problems : atmospheric compensation and Temperature/Emissivity Separation (TES). The atmospheric correction scheme is based on sounding techniques and neural networks to extract principal components of temperature profile and water vapor content. A spectral Smoothness (SpSm) method is then used for TES and to improve water vapor estimation. Accuracy of atmospheric and surface retrievals has been evaluated on synthetic data. Finally the method has been applied to the S-HIS spectro-radiometer measurements of the EAQUATE campaign.
Consensus of Subjective Probabilities: The Pari-Mutuel Method (1959)

Abstract : Under the pari-mutuel system of betting on horse races the final track's odds are in some sense a consensus of the 'subjective odds' of the individual bettors weighted by the amounts of their bets. The properties which this consensus must possess and prove that there always exists a unique set of odds having the required properties are formulated. (Author)
Modifying of Cotton Fabric Surface with Nano-ZnO Multilayer Films by Layer-by-Layer Deposition Method (2010)

ZnO nanoparticle-based multilayer nanocomposite films were fabricated on cationized woven cotton fabrics via layer-by-layer molecular self-assembly technique. For cationic surface charge, cotton fabrics were pretreated with 2,3-epoxypropyltrimethylammonium chloride (EP3MAC) by pad-batch method. XPS and SEM were used to examine the deposited nano-ZnO multilayer films on the cotton fabrics. The nano-ZnO films deposited on cotton fabrics exhibited excellent antimicrobial activity against Staphylococcus aureus bacteria. The results also showed that the coated fabrics with nano-ZnO multilayer films enhanced the protection of cotton fabrics from UV radiation. Physical tests (tensile strength of weft and warp yarns, air permeability and whiteness values) were performed on the fabrics before and after the treatment with ZnO nanoparticles to evaluate the effect of layer-by-layer (LbL) process on cotton fabrics properties.
Current mirror based folding amplifier (2002)

In this paper, a current mirror based folding amplifier is proposed. Compared to conventional differential-pair based voltage mode folding amplifier, this current mode folding amplifier is much easier to achieve ideal triangular-shape transfer characteristic curve. The proposed circuit can also operate at low power supply voltage.
Discussion of Misconceptions about WCET Analysis. (2003)

Worst-case execution time (WCET) analysis tools are needed for the development of hard real-time systems. Despite the theoretic advances in academic research in WCET there has been hardly any impact on the industrial practice of timing analysis. The essential question is why it was not possible to provide more influential research over the last one-and-a-half decades. This paper gives constructive answers to this question. It presents a number of misconceptions about current WCET analysis. These discussions will help to guide research to the development of more useful WCET analysis techniques. This paper deals with WCET analysis techniques for hard real-time systems.