gebhart/patrepeval huggingface dataset:
A new non-invasive cuff-less blood pressure sensor (2013)

A non-invasive, cuff-less, capable of continuous detection and low cost blood pressure sensor is proposed in this study. The proposed blood pressure sensor has a specially-designed strain sensor attached to a flexible plate and encapsulated by a gel module. The sensor is able to detect pulse signals of the artery vibration under the skin of a human wrist by a simple, flexible attachment pad. The strain sensor is expected to vibrate in a synchronized fashion with artery pulsation. The pulse vibration is expected to be transmitted to the strain sensor through the gel module. This module is made of highly bio-compatible materials like polyethylene (PE), polyurethane (PU), polytetrafluoroethylene (PTFE), polydimethylsiloxane (PDMS), or polymethylmethacrylate (PMMA). The gel module supports the strain sensor to a stability condition with top surface contacting tightly with the human skin while the bottom surface is under a low pressure exerted by a pressurizing wrist belt.
Vibrio cholerae Hemolysin Is Required for Lethality, Developmental Delay, and Intestinal Vacuolation in Caenorhabditis elegans (2010)

Our data strongly suggest that HlyA is a virulence factor in C. elegans infection leading to lethality and developmental delay presumably through intestinal cytopathic changes.
LPV decoupling for multivariable control system design (2009)

The paper explores methods for decoupled linear parameter varying (LPV) control. The proposed approach seeks to benefit the multi-variable control of multi-input multi-output (MIMO) systems with variable operating conditions, variable parameters or nonlinear behavior. The method can improve the performance and reduce the variability of such MIMO systems with significant coupling in the system dynamics. We design MIMO decoupled feedback LPV controllers to address coupling effects. In particular, the method uses a parameter-dependent static inversion or SVD decomposition of the system to minimize the effects of the off-diagonal terms in the MIMO system transfer function matrix. The parameter-dependent decoupling matrices are selected along with the appropriate LPV controller design to guarantee the closed-loop performance specifications. A new parameter-dependent interaction measure is also introduced based on SVD decomposition and static inversion and is examined for the adaptive control design purposes to address the variability and coupling of the multivariable systems.
Imagistic evaluation of direct dental restoration: en face OCT versus SEM and microCT (2011)

There are several methods known which are used to assess the quality of direct dental restorations, but most of them are invasive. These lead to the destruction of the probes and often no conclusion could be drawn in respect to the existence of any microleakage in the investigated areas of interest. Optical tomographic techniques are of particular importance in the medical imaging field, because these techniques can provide non-invasive diagnostic images. Using an en-face version of OCT, we have recently demonstrated real time thorough evaluation of quality of dental fillings. The purpose of this in vitro study was to validate the en face OCT imagistic evaluation of direct dental restoration by using scanning electron microscopy (SEM) and microcomputer tomography (μCT). Teeth after several treatment methods are imaged in order to detect material defects and to asses the marginal adaptation at the dental hard tissue walls. SEM investigations evidenced the nonlinear aspect of the interface between the filling material and the buccal and lingual walls in some samples. The results obtained by μCT revealed also some material defects inside the fillings and at the interfaces with the rootcanal walls. The advantages of the OCT method consist in non-invasiveness and high resolution. En face OCT investigations permit to visualize a more complex stratificated structure at the interface filling material/dental hard tissue and in the apical region.
Fabrication of GHz/THz Volumetric Optics via Rapid Prototyping (2009)

Rapid prototyping technology is now capable of high-resolution fabrication suitable for producing volumetric optics in the GHz/THz range. We will report on our successful fabrication of photonic crystal structures and discuss other components under study.
A REVIEW OF CURRENT CLINICAL APPLICATIONS OF UPPER GASTROINTESTINAL ZOOM ENDOSCOPY (2005)

Current clinical applications of upper gastrointestinal (GI) zoom endoscopy were reviewed. The objective of upper GI zoom endoscopy has been the diagnosis of neoplastic lesions as well as the diagnosis of minute inflammatory mucosal change. The target organ and pathology of the neoplastic lesions have been squamous cell carcinoma in the oro‐ and hypo‐pharynx and in the esophagus; intestinal metaplasia, dysplasia, and adenocarcinoma in Barrett's esophagus; and adenocarcinoma in the stomach. For analyzing the magnified endoscopic findings, there were two different basic principles (mucosal microstructural change and subepithelial microvascular changes). Overall diagnostic accuracy for diagnosing a neoplastic lesion was above 80% throughout the upper GI tract. Although the diagnostic accuracy of the zoom endoscopy technique seems to be superior to that of the ordinary endoscopy technique alone, the continuous efforts to establish standardized guidelines and procedures are mandatory in order to lead to the routine use of upper GI zoom endoscopy in clinical practice.
Identification of Tire Noise Generation Mechanisms Using a Roadwheel Facility (1980)

<div class="htmlview paragraph">A series of acoustic and vibration measurements were conducted on four heavy truck tires, utilizing a roadwheel facility enclosed in a semianechoic chamber. Data were recorded from five near-field microphones and from five accelerometers mounted inside the tires. Acoustic time signatures were analyzed to identify source locations and possible generation mechanisms. Excellent agreement was obtained between air pumping theory and measurements for a crossbar tire. Tentative agreement between air pumping theory and measurements has also been obtained for one rib tire.</div>
Speed-independent fused multiply add and subtract unit (2016)

Speed-independent fused multiply-add-subtract unit is offered together with test environment providing full verification of its performance and workability in all range of the environment conditions. It complies with IEEE 754 Standard, and performs double and single precision operations at three operands. The unit is implemented as a two-channel with a common input and output. Each channel is a pipeline with four stages. Multiplier is implemented on the modified Booth algorithm using self-timed redundant code. The unit was designed on a base of standard CMOS process with 65 nm design rules and has 3.15 Gigaflops performance and less than 2 ns latency.
Swarms of UAVs and fighter aircraft (1998)

This paper describes the successful implementation of a model of swarm dynamics using particle simulation concepts. Several examples of the complex behaviors achieved in a target/interceptor scenario are presented.
Electrostrictive nonlinearity in optical fiber deduced from Brillouin gain measurements (2002)

Summary form only given. The nonlinear refractive index has drawn considerable attention these past few years, because it may significantly perturbate long-range propagation of lightwaves in optical fibers. Two main origins to this nonlinearity have been identified: nonresonant electronic nonlinearity and electrostriction. This paper shows that the electrostrictive contribution to the nonlinear refractive index n, may indeed be straightfowardly calculated from Brillouin gain measurements. The Brillouin linear gain g, is dependent on material properties and in particular on the electrostrictive coefficient.
ChemInform Abstract: Influence of Induced Water Dipoles of Computer Porperties of Liquid Water and on Hydration and Association of Nonpolar Solutes. (1995)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Polare Cycloadditionen (1973)

Abstract Cycloadditionen mit ionischen Komponenten werden als “Polare Cycloadditionen” bezeichnet, um sie von den Cycloadditionen mit dipolaren und ungeladenen Komponenten abzugrenzen. Die strukturellen Erfordernisse, die Art der Erzeugung und die besondere Reaktivität der additionsfähigen “polaren” Zwischenstufen mit aktivierten CC‐Mehrfachbindungen, die vielfältigen Besonderheiten des Cycloadditionsablaufs und die günstige Synthese von heterocyclischen Systemen nach diesem Reaktionsprinzip machen die terminologische Abgrenzung sinnvoll und notwendig zur Ordnung des vorhandenen Tatsachenmaterials. In dieser ersten Übersicht über einen noch wenig untersuchten Bereich der Chemie wird zunächst auf die kationischen und dann auf die anionischen polaren Cycloadditionen eingegangen.
Further Studies of Group A Streptococcal Factors with Lethal and Cardiotoxic Properties (1955)

Journal Article Further Studies of Group A Streptococcal Factors with Lethal and Cardiotoxic Properties Get access John H. Schwab, John H. Schwab From the Department of Bacteriology and Immunology, University of Minnesota, Minneapolis, and the Department of Bacteriology and Medicine, University of North Carolina, Chapel Hill, North Carolina Search for other works by this author on: Oxford Academic PubMed Google Scholar Dennis W. Watson, Dennis W. Watson From the Department of Bacteriology and Immunology, University of Minnesota, Minneapolis, and the Department of Bacteriology and Medicine, University of North Carolina, Chapel Hill, North Carolina Search for other works by this author on: Oxford Academic PubMed Google Scholar William J. Cromartie William J. Cromartie From the Department of Bacteriology and Immunology, University of Minnesota, Minneapolis, and the Department of Bacteriology and Medicine, University of North Carolina, Chapel Hill, North Carolina Search for other works by this author on: Oxford Academic PubMed Google Scholar The Journal of Infectious Diseases, Volume 96, Issue 1, January 1955, Pages 14–18, https://doi.org/10.1093/infdis/96.1.14 Published: 01 January 1955 Article history Received: 25 December 1954 Published: 01 January 1955
Involvement of the liver, but not of IL-6, in IL-1-induced desensitization to the lethal effects of tumor necrosis factor (1991)

C57BL/cnb mice were found to be protected against a lethal combination of recombinant murine (m) TNF and GalN by pretreatment with several cytokines. At certain doses, rmTNF and human (h) TNF protected completely. The clearest protection was induced by rIL-1: all four rIL-1 species (both m and h, as well as alpha and beta) protected when given 12 h before the challenge. LPS and rmIFN-gamma protected weakly, whereas rmIL-6 and rhIL-6 did not protect at all. Also adrenocorticotropic hormone, dexamethasone, or dexamethasone in combination with rhIL-6 could not protect. A single IL-1 injection also completely protected mice against a lethal dose of mTNF in the absence of GalN sensitization. The desensitization by IL-1 cannot be explained by a faster clearance of the challenge TNF. In addition, we demonstrate that the IL-1-induced desensitization was only observed when a functioning liver was present, that IL-1-pretreated animals did not show decreased numbers of hepatocyte TNF receptors, and that the amount of TNF-induced IL-6 was not reduced.
Airway management before, during and after extubation: a survey of practice in the United Kingdom and Ireland (2005)

Summary Complications at extubation remain an important risk factor in anaesthesia. A postal survey was conducted on extubation practice amongst consultant anaesthetists in the United Kingdom and Ireland. The use of short acting drugs encourages anaesthetists to extubate the trachea at lighter levels of anaesthesia. The results show that oxygen (100%) is not routinely administered either before extubation or en route to the recovery area. A trend towards a head up or sitting position at extubation is emerging. However, further research into the use of these positions is required. Airway related complications at extubation are relatively frequent but are usually dealt with by simple basic measures. The role of drugs such as propofol in decreasing the incidence of these complications needs further evaluation. Some of these results give concern for patient safety and for training. The importance of teaching and adherence to continued oxygenation until complete recovery is strongly emphasised. Nerve stimulators should be used continually as standard monitoring throughout the anaesthetic period when muscle-relaxing drugs are part of the anaesthetic technique.
An error propagation prevention method for MIMO-OFDM RLS-DDCE-algorithms (2009)

In this paper issues in the implementation of a recursive least squares (RLS) multiple-input multiple-output (MIMO) decision-directed channel estimation (DDCE) and tracking algorithm for spatial multiplexing are discussed. Problems addressed are a simple calculation of the inverse autocorrelation matrix and schemes of training data or pilot symbols. While there is much work spend in evaluating pilot performances, the choice of pilot symbols cannot be decided based only on simulations. Three proposed schemes are discussed regarding off-the-shelf RF components' compatibility of an experimental MIMO system where polyphase pilots fail to yield good results. Because decision-directed channel estimation is prone to error propagation, we propose a scheme which makes a check on recovered symbol plausability by using the result from the channel decoder thus preventing error propagation.
Treatment of cysts of the acromioclavicular joint with shoulder hemiarthroplasty. (1993)

A chronic cyst overlying the acromioclavicular joint was managed in four patients, between July 1988 and September 1991. All patients had had previous unsuccessful aspiration and excision of the cyst with recurrence. Each cyst was associated with a chronic, massive defect of the rotator cuff; superior migration of the humeral head; and degenerative osteoarthrosis of the glenohumeral joint. All patients had complained of pain and limitation of motion (mean forward elevation, 95 degrees; mean external rotation, 20 degrees; and mean internal rotation, to the spinous process of the second lumbar vertebra). All procedures consisted of a large-humeral-head hemiarthroplasty, with no operative treatment directed at the cyst or the acromioclavicular joint. At an average of twenty-seven months (range, fifteen to thirty-six months) after the operation, the patients were all pain-free and had not had a recurrence of the cyst. The average postoperative range of motion was 130 degrees of forward elevation, 30 degrees of external rotation, and internal rotation to the spinous process of the first lumbar vertebra.
Involvement of nerve growth factor in the ovulatory cascade: trkA receptor activation inhibits gap junctional communication between thecal cells. (1996)

Activation of trkA, the nerve growth factor (NGF) tyrosine kinase receptor, has been recently implicated in the process of mammalian ovulation. During the hour preceding follicular rupture, a marked increase in trkA and NGF gene expression occurs in thecal-interstitial cells of the ovary. Immunoneutralization of NGF actions or pharmacological blockade of trkA transducing activity inhibits ovulation, suggesting that activation of the NGF-trkA complex in nonneural cells of the periovulatory follicle is a physiological component of the ovulatory cascade. As thecal cells of Graafian follicles are functionally coupled by gap junctions, and the ovulatory rupture requires dissociation of thecal cell-cell communication, we sought to determine whether NGF affects the integrity of this communication. We now report that NGF-induced activation of trkA receptors in isolated ovarian thecal cells disrupts cell to cell communication by affecting the functional integrity of gap junctions. Bovine thecal cells expressing trkA receptors, but not cells lacking the receptors, respond to NGF with a reduction in the transfer of calcein, a fluorescent dye that passes through gap junctions. This effect was associated with a rapid (10-30 min) increase in serine phosphorylation of connexin-43, the main protein constituent of gap junctions in the ovary. The reduction in dye transfer was not observed when the cells were exposed to epidermal growth factor or other neurotrophins, including neurotrophin 3, neurotrophin 4, and brain-derived neurotrophic factor. Thus, cell-specific activation of trkA receptors in periovulatory follicles may provide one of the signals involved in inducing the cellular dissociation of the follicular wall that precedes ovulatory rupture.
ChemInform Abstract: New UV Stabilizers: 3‐ and 5‐(2′‐Hydroxyphenyl)pyrazoles. (1992)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Role for CD30 Antigen in Human T Helper 2–Type Responses (2007)

Human T helper 1 (Th1) cells develop preferentially during infections by intracellular parasites and trigger phagocyte-mediated host defence. In contrast, human Th2 cells are responsible for phagocyte-independent host response, and they predominate during helminthic infestations and in atopic humans in response to common environmental antigens. Polarized human Th1 and Th2 cell responses play different roles in protection, and they can promote different immunopathological reactions. Strong and persistent Th1 responses seem to be involved in organ-specific autoimmunity, contact dermatitis and some chronic non-allergic inflammatory disorders. Polarized Th2 responses favour reduced protection against the majority of infections, including HIV, and they are responsible for triggering allergic disorders in genetically predisposed hosts. Th1 and Th2 cells probably exhibit distinct surface markers; for example, Th2 cells express preferentially membrane CD30 and release the soluble form of CD30, which is a member of the tumour necrosis factor receptor superfamily. CD30-mediated signalling promotes the in vitro development of Th2-like cells. The expression of CD30 in HIV-infected T cells results in enhanced HIV replication, suggesting the existence of complex links among CD30 expression, production of Th2-type cytokines and immunopathogenesis of HIV infection.
Experimental study of laser-driven shock waves in stainless steels (1998)

Two industrial stainless steels were investigated under laser-shock loading in plasma confined regime with water at nearly 10 GW/cm2 irradiance, driving to stress loadings close to 7 GPa—20 ns at the surface of the targets. A velocimetry interferometer system for any reflector was used to measure shock wave decay and estimate, through the determination of elastic precursors, the dynamic yield strengths at strain rates approaching 106 s−1. Some 50%–100% increases could be found between dynamic yield strengths and static plastic flow limits at 10−3 s−1. Different behaviors were noticed: on AISI 316L Austenitic steel, elastic precursors were shown to have constant values, whatever the propagation depths, whereas on a Martensitic X12CrNiMo12-2-2 steel, precursor attenuations in depth were evidenced. Concerning the application of laser-shock waves to reinforce surfaces, the determination of Hugoniot elastic limits was shown to be useful to predict the plastified depths and the general evolution of plastic deformations in-depth. For instance, comparisons between shock wave profiles and in-depth residual stress fields were shown to give accurate correlations. Lastly, the propagation of laser-shock waves in work-hardened layers was also investigated, which allowed to point out some stress amplitude increases behind 316L foils in the case of a material saturated with defects (shot peening at very high coverage rate).
Modeling Thermo-Oxidative Layer Growth in High-Temperature Resins (2005)

This paper describes modeling of degradation behavior of high-temperature polymers under thermo-oxidative aging conditions. Thermo-oxidative aging is simulated with a diffusion-reaction model in which temperature, oxygen concentration, and weight-loss effects are considered. A parametric reaction model based on a mechanistic view of the reaction is used for simulating reaction-rate dependence on the oxygen availability in the polymer. Macroscopic weight-loss measurements are used to determine the reaction and polymer consumption parameters. The diffusion-reaction partial differential equation system is solved using Runge-Kutta methods. Simulations illustrating oxidative layer growth in a high-temperature PMR-15 polyimide resin system under isothermal conditions are presented and correlated with experimental observations of oxidation layer growth. Finally, parametric studies are conducted to examine the sensitivity of material parameters in predicting oxidation development.
Hybrid Integration Of AlGaAs/GaAs Laser Diode On Si Substrate (1993)

Integration of laser diodes to optical waveguides on silicon is a topic of current interest [1-2]. While metal solder has been commonly used for bonding, it can be responsible for 3 dB of loss due to misalignment in the vertical direction [2].
Notes - Trifluoroacetates of Ethylene Glycol (1957)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNotes - Trifluoroacetates of Ethylene GlycolSidney Ross and Manuel FinkelsteinCite this: J. Org. Chem. 1957, 22, 7, 847–848Publication Date (Print):July 1, 1957Publication History Published online22 April 2003Published inissue 1 July 1957https://pubs.acs.org/doi/10.1021/jo01358a619https://doi.org/10.1021/jo01358a619research-articleACS PublicationsRequest reuse permissionsArticle Views108Altmetric-Citations1LEARN 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
Marching along together (1933)

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