gebhart/patrepeval huggingface dataset:
Phase Behavior of Telechelic Polyisobutylene (PIB) in Subcritical and Supercritical Fluids. 2. PIB Size, Solvent Polarity, and Inter- and Intra-Association Effects for Blank, Monohydroxy, and Dihydroxy PIB(11K) in Ethane, Propane, Carbon Dioxide, and Dimethyl Ether (1994)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase Behavior of Telechelic Polyisobutylene (PIB) in Subcritical and Supercritical Fluids. 2. PIB Size, Solvent Polarity, and Inter- and Intra-Association Effects for Blank, Monohydroxy, and Dihydroxy PIB(11K) in Ethane, Propane, Carbon Dioxide, and Dimethyl EtherChristopher J. Gregg, Fred P. Stein, and Maciej RadoszCite this: Macromolecules 1994, 27, 18, 4981–4985Publication Date (Print):August 1, 1994Publication History Published online1 May 2002Published inissue 1 August 1994https://doi.org/10.1021/ma00096a020RIGHTS & PERMISSIONSArticle Views180Altmetric-Citations39LEARN 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 InReddit PDF (547 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Flash‐Sintering Mechanism Studied Through Interrupted Experiments (2021)

Herein, the mass‐transfer mechanism of flash sintering during the transient stage is examined using an in‐house‐made flash and quench (FQ) system. Visual findings of samples during and after FQ experiments and high‐resolution electron microscopy are given. Many new observations regarding the flash‐sintering nature are presented and discussed. Samples that underwent FQ experiments either show no sign of sintering or local sintering and grain growth due to a hotspot. These findings aid in untying of the two phenomena. Electron microscopy imaging of flash and quenched samples shows atypical microstructures. Such microstructural anomalies include sintering, massive grain growth, and visual findings on the surface. These findings establish flash sintering as a set of phenomena, caused by an abrupt and local increase in temperature (a “flash event”), where only one of which is sintering.
Exhaled NO is a poor marker of asthma control in children with a reported use of asthma medication: a pharmacy‐based study (2012)

High FeNO is a poor marker of asthma control in children with reported use of asthma medication. Various other factors, including medication adherence and medication use, are associated with increased FeNO levels.
Hydrogel Scaffolds Contribute to the Osteogenesis and Chondrogenesis in the Small Osteochongral Defects (2011)

Hydrogel Scaffolds Contribute to the Osteogenesis and Chondrogenesis in the Small Osteochongral Defects
High-Resolution Long-Range THz Imaging for Tunable Continuous-Wave Systems (2020)

Imaging in the terahertz frequency range has attracted growing interests since the first image of a leaf more than 20 years ago, due to its countless applications in basic and applied research, medical imaging, and nondestructive testing. However, most terahertz imaging approaches rely on focusing optics which require knowledge about the imaging scene before the actual imaging takes place. Further, imaging is mostly restricted to short distances and high resolution is only achieved for systems with a high bandwidth. Here, we present a method that enables high-resolution imaging of small metallic and dielectric objects at distances up to 2 m based on a synthetic aperture. We derive a simple approximation for the resolution of partial circular synthetic apertures with limited bandwidth. The bandwidth limitation is encountered by replacing the measured signals with replica signals of high bandwidth and equal round-trip time so that the resolution is only limited by the carrier frequency and signal-to-noise ratio of the measurement system.
Alternative approach in 3D MEMS-IC integration using fluidic self-assembly techniques (2009)

International audience
Learned Immunosuppression Is Associated with an Increased Risk of Chemically-Induced Tumors (1995)

Based on the hypothesis that certain aspects of the CNS and immune system interact and that altered immune function affects carcinogenesis, an animal model was developed to examine the effects of learned immunosuppression on the development of a chemically induced tumor. In two experiments, we evaluated whether mice, for which immunosuppression was associated with a neutral (conditioned) stimulus, would exhibit an increased susceptibility to tumor development upon reexposure to the conditioned stimulus, as compared to nonconditioned and control animals. A taste aversion conditioning paradigm, based on classical conditioning techniques, was employed to suppress immune function using the cytotoxic and immunosuppressive drug cyclophosphamide (CY) as the unconditioned stimulus and consequently increase the risk of chemically induced tumorigenesis. CY (100 mg/kg, intraperitoneal) was paired with saccharin in the drinking water (0.1%) of adult female mice (CF-1). Conditioned mice were exposed to saccharin twice in the absence of CY, on days 4 and 7 after the first exposure (day 1). All mice were injected with the chemical carcinogen 9,10-dimethylbenzanthracene (DMBA, 50 mg/kg, subcutaneous) on day 4 of conditioning. Two subsequent exposures to saccharin alone substantially increased the risk of developing DMBA-induced tumors (ranging from 83-91%), as compared to control animals (36%) that had not received this pairing. Mice that received all agents (i.e., CY, DMBA, and saccharin) in a slightly different order did not display elevated tumor incidence. Three separate exposures to CY also significantly increased the number of animals developing tumors in response to the carcinogen (75%). Mice were observed for at least 8 weeks after conditioning.(ABSTRACT TRUNCATED AT 250 WORDS)
The Induction of Hapten-Specific Immunologic Tolerance and Immunity in B Lymphocytes (1978)

Abstract The serum from mice that had been rendered specifically tolerant (TolS) to the trinitrophenyl (TNP) hapten by the injection of trinitrobenzenesulfonic acid (TNBS) was tested in vitro for its ability to induce unresponsiveness in untreated spleen cells. Conjugated with TNP at a concentration of ≈4 × 10-4 M, TolS induced complete TNP-specific tolerance in cultures of spleen cells challenged with TNP-lipopolysaccharide (TNP-LPS) and 4-hydroxy-3-iodo-5-nitrophenylacetic acid conjugated polymerized flagellin (NIP-POL). By using normal mouse serum (NMS) as a control, TNP-specific tolerance in the in vitro antibody response was induced by cultivation of spleen cells with amounts of TolS ranging from 10-4 to 10-2 ml (equivalent to 4 × 10-8 to 4 × 10-6 M TNP) in 1 ml cultures of 10 × 106 viable spleen cells. Thymic-derived (T) cells were not required for the induction of the unresponsiveness in TNP-specific bone marrow-derived (bursal equivalent, B) lymphocytes. TolS induced tolerance in cultures challenged with either T cell independent (TI) or T cell dependent (TD) forms of the TNP hapten. TolS was nonimmunogenic under the in vitro culture conditions used, and did not affect control responses. Although it was most effective when harvested 4 or fewer days after TNBS injection of donor mice, TolS exerted a tolerogenic effect if obtained as much as 2 weeks after such treatment. TolS was active across both histocompatibility and immunoglobulin allotype barriers, and also exerted its tolerogenic effect in the presence of concentrations of antigen optimal for the induction of immunity. Complete tolerance was induced by pretreatment of spleen cells with TolS and extensive washing before the addition of immunogen. Following dose response kinetics, the time required and the level of unresponsiveness induced during preincubation with TolS were directly related to the dose of tolerogen utilized. The inability of TNP-lysine to act as a tolerogen and the nondialysable nature of TolS suggested that the active component of this serum is a macromolecule and not merely TNBS. Fractionation of TolS by (NH4)2SO4 resulted in virtually complete recovery of the tolerogenic activity in the globulin (nonalbumin) fraction. Although haptenated serum γ-globulins would be present in this fraction, it is also possible that other constituents with potential tolerogenic capacity are present (i.e., various serum proteins or cell surface membrane fragments that are trinitrophenylated). The data are consistent with the suggestion that TNBS-induced tolerance in vivo is mediated by a component of TolS that is active as a tolerogen in vitro.
Wetting and Navier-Stokes Equation — The Manufacture of Composite Materials (2015)

It is well known that there are several processes to manufacture composite materials, a large part of which consist in the infiltration of a liquid (matrix) through a porous medium (reinforcement). To perform these processes, both thermodynamics (wetting) and kinetics (Navier-Stokes) must be considered if a good quality composite material is sought. Although wetting and the laws that govern it have been well known for over 200 years, dating back to the original works of Young and Laplace, this is not the case with the Navier-Stokes equation, which remains so far unsolved. Although the Navier-Stokes equation, which describes the motion of a fluid, has been solved for many particular cases, such as the motion of a fluid through a pipe, which has resulted in the well-known Poiseuille equation, or the motion of a fluid through a porous media, described by the Darcy's law (empirical law obtained by Darcy), its general solution remains one of the greatest challenges of mathematicians today. Therefore, the objective of this chapter is to present the resolution of the Navier-Stokes equation with the laws of wetting for different cases of interest in the manufacture of composite materials.
An Intelligent Multimodal Biometric Authentication Model for Personalised Healthcare Services (2022)

With the advent of modern technologies, the healthcare industry is moving towards a more personalised smart care model. The enablers of such care models are the Internet of Things (IoT) and Artificial Intelligence (AI). These technologies collect and analyse data from persons in care to alert relevant parties if any anomaly is detected in a patient’s regular pattern. However, such reliance on IoT devices to capture continuous data extends the attack surfaces and demands high-security measures. Both patients and devices need to be authenticated to mitigate a large number of attack vectors. The biometric authentication method has been seen as a promising technique in these scenarios. To this end, this paper proposes an AI-based multimodal biometric authentication model for single and group-based users’ device-level authentication that increases protection against the traditional single modal approach. To test the efficacy of the proposed model, a series of AI models are trained and tested using physiological biometric features such as ECG (Electrocardiogram) and PPG (Photoplethysmography) signals from five public datasets available in Physionet and Mendeley data repositories. The multimodal fusion authentication model shows promising results with 99.8% accuracy and an Equal Error Rate (EER) of 0.16.
Optical and Structural Characteristics of Ion-Plated Nb2O5 and HfO2 Films (2007)

Dielectric thin films (Nb2O5, HfO2) were deposited on unheated silicon and glass substrates using reactive low voltage ion plating (RLVIP). Film refractive indices of n550 = 2.39 for Nb2O5 and n550 = 2.13 for HfO2 were determined between an arc current range of 40 and 60 A. Optical absorption coefficients in the low 10−4-range could be obtained for relatively high oxygen partial pressures. The film density was measured by XRR and yielded values higher than the bulk material. Topography and roughness investigations indicated nearly atomical flat film surfaces. XRD and TEM analyses of the film structure showed the presence of fine grained polycrystalline HfO2 films while the deposited Nb2O5 films remained amorphous.
Use ofSaccharomyces cerevisiaeandCaenorhabditis elegansas Model Organisms To Study the Effect of Cocoa Polyphenols in the Resistance to Oxidative Stress (2011)

Developing functional foods to improve the quality of life for elderly people has great economic and social impact. Searching for and validating ingredients with in vivo antioxidant effects is one of the key steps in developing this kind of food. Here we describe the combined use of simple biological models and transcriptomics to define the functional intracellular molecular targets of a polyphenol-enriched cocoa powder. Cocoa powder supplemented culture medium led to increased resistance to oxidative stress, in both the budding yeast Saccharomyces cerevisiae and the nematode Caenorhabditis elegans, and, in the latter, lifespan was also increased. These effects are fully dependent on the polyphenols present in the cocoa powder and on the sirtuins Hst3 (yeast) and SIR-2.1 (worm). The transcription factor DAF-16 also plays an important role in the case of the nematode, indicating that the insulin/IGF-1 (insulin-like growth factor) signaling pathway is related with the antioxidative effect of cocoa polyphenols. All in all, these results confirm that this polyphenol-enriched cocoa powder, with antioxidant activity, has great potential use as a functional food ingredient for elderly people. Furthermore, this work reveals the value of using simple biological models to screen for compounds that are of interest for the food and pharmacological industry.
Radiation Tolerant Mixed Signal Microcontroller for Martian Surface Applications (2006)

We are developing a radiation tolerant, mixed-signal microcontroller for applications exposed to the Martian surface thermal environment. The part can be used for spacecraft/rover engineering data collection, parameter monitoring, and fault detection at the sensor and needs minimal external support circuits. The 8-bit microcontroller includes timer resources, three serial communications ports, a 16-bit programmable digital interface, an 8-level interrupt controller, and I <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> C master/slave bus interface. Mixed signal peripherals include a 16-channel, 10-bit successive approximation A/D converter, 10-bit D/A converter, programmable gain amplifier, and voltage reference. All memory interfaces use a 13-bit wide two-bit error detection, single-bit error correction code for each byte. There is an internal 512 times 13 bit scratchpad static random access memory and 2 Ki times 13 bit electrically erasable programmable read only memory
Low Relapse Rate Leads to High Concordance of Sustained Virologic Response (SVR) at 12 Weeks With SVR at 24 Weeks After Treatment With ABT-450/Ritonavir, Ombitasvir, and Dasabuvir Plus Ribavirin in Subjects With Chronic Hepatitis C Virus Genotype 1 Infection in the AVIATOR Study (2014)

In 247 subjects with hepatitis C virus genotype 1 infection treated with the interferon-free regimen of ABT-450/ritonavir, ombitasvir, and dasabuvir plus ribavirin, concordance of a sustained virologic response at 12 and 24 weeks supports the use of the earlier time point as a primary efficacy endpoint for trials of this interferon-free regimen.
Nanotubes from asymmetrically decorated vesicles (2010)

Hydrodynamic nanotube extrusion is used to characterize chitosan-decorated vesicles, which are more robust to pH and salt shocks and exhibit specific behavior under osmotic pressure if compared to their bare homologues. The vesicle attached to a micro-rod is submitted to a flow. Above a threshold velocity, we observe the extrusion of a lipidic nanotube. We study how it grows and relaxes when the flow is stopped. We find that extrusion forces for decorated vesicles are weaker than for bare vesicles. We interpret these results using a model that introduces the spontaneous curvature due to asymmetric adsorption of chitosan on the external leaflet of the bilayer, which allows us to calculate the stationary length of the tube versus the flow velocity and to estimate the spontaneous curvature c0.
HIV Infection of monocyte-derived macrophages in vitro reduces phagocytosis of Candida albicans (1994)

HIV-1 infection of peripheral blood monocyte-derived macrophages (MDMs) is unrelated to the level of CD4 expression on the surface of the cell, is associated with considerable donor variability, causes minimal cytopathology, and results in peak viral antigen production after 2 weeks of infection. Phagocytosis of opsonized Candida albicans by MDMs infected in vitro with several strains of HIV was compared with that of uninfected cells from the same donors; the proportion of MDMs containing the fluorescein isothiocyanate-labeled yeast was determined by flow cytometry and phase contrast microscopy. The intracellular localization of C. albicans was confirmed by confocal microscopy. Using paired MDMs from nine donors, 81% of uninfected and 53% of HIV-infected MDMs phagocytosed C. albicans. In addition, the number of yeast per cell was significantly higher in uninfected MDMs than in HIV-infected cells (mean 6.1 versus 2.5). These findings may partially explain the high incidence of mucocutaneous candidiasis in HIV-infected patients with advanced disease.
Investigation of Breast Cancer Risk Factors in northern states of Sudan using Logistic Regression Analysis (2013)

Background: Breast cancer is the most common type of cancers and  leading cause of death among women worldwide. In Sudan breast cancer is the most common type of cancer and its incidence has been rising for the past two decades.Objective: To investigate whether the breast risk factors of northern states (Northern and River Nile) are different from other states in Sudan.Methods: A case-control study was conducted in Radiation and Isotopes Centre Khartoum RICK targeting the breast cancer patients who came to get treatment or follow-up during 2010. A total of 60 breast cancer patients from northern states and 60 control breast cancer patients from other Sudan states were interviewed using purposively designed questionnaires. Logistic regression has been used for modeling the probability that a breast cancer could be developed as a function of risk factors.Results: This study showed that risk factors of breast cancer do not differ significantly between northern states (Northern and River Nile) and other Sudan states except the education level, are the patient alive, disease history and lactation.Conclusion: There is no difference between risk factors of breast cancer in all Sudanese states; all Sudanese women are exposed to breast cancer with matching risk factors.Key words: breast, risk factors, logistic regression.
Selective recovery of uranium(VI) from aqueous acid solutions using micellar ultrafiltration (1996)

Preconcentration and removal of uranyl ions from aqueous solutions were achieved by using micellar-enhanced ultrafiltration with complexing micellar aggregates composed of Triton X-100 and different hydrophobic ligands. Derivatives of 4-aminosalicylic acid (PAS) and of 1-(2-pyridylazo)-2-naphthol (PAN) having tuned alkyl chains were used as suitable chelating agents. The selective recovery of uranyl from acid samples containing also SrII and CdII is possible using the multi-step ultrafiltration approach with the PAN derivatives, whereas effective uranyl retention can be obtained with salicylates only in neutral to basic media.
An efficient block motion estimation method on CELL BE (2008)

In order to take advantage of the byte-type data parallelism in CELL BE's SIMD technique, this paper introduces a new algorithm, which can achieve much higher prediction accuracy and lower computational complexity compared with diamond search (DS) algorithm. Most of the conventional fast motion estimation algorithms just focus on reducing the number of search points. However, less search points is not equal to less computational complexity for CELL BE's architecture. The introduced method uses a large rectangular search pattern including 35 search points at the first search step. Through increasing search points, it gains 4.32% coding efficiency compared with DS. Through SAD reuse and reducing unaligned memory access, it needs 29.5% less computation than DS method on CELL BE. Our implementation of this algorithm on CELL BE shows that we can satisfy the requirement of real-time HD H.264 encoding.
Total Synthesis of Stephanotic Acid Methyl Ester. (2006)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Extracorporeal Life Support as a Treatment for Neurogenic Pulmonary Edema and Cardiac Failure Secondary to Intractable Intracranial Hypertension: A Case Report and Review of the Literature (2009)

Szerlip, Nicholas J. MD; Bholat, Omar MD; McCunn, Maureen M. MD, MIPP; Aarabi, Bizhan MD, FACS, FRCSC; Scalea, Thomas M. MD Author Information