Publications by authors named "Tal B"

Recent experiments at the ASDEX Upgrade tokamak have provided the first ever measurements from the imaging heavy-ion beam probe. In this work, we show that the developed simulation framework can reproduce qualitatively the measurement's observed shape and position. Quantitatively, we demonstrate that the model reproduces, within the experimental uncertainties, the observed signal levels.

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The imaging heavy ion beam probe (i-HIBP) diagnostic has been successfully commissioned at ASDEX Upgrade. The i-HIBP injects a primary neutral beam into the plasma, where it is ionized, leading to a fan of secondary (charged) beams. These are deflected by the magnetic field of the tokamak and collected by a scintillator detector, generating a strike-line light pattern that encodes information on the density, electrostatic potential, and magnetic field of the plasma edge.

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Metabolic syndrome (MS) is comprised of a cluster of abnormalities in glucose, lipid, and vascular homeostasis, which is most commonly linked to abdominal obesity. MS heralds increased risk for development of diabetes and is linked to impairment in insulin signaling. Insulin-degrading enzyme (IDE) is one of the mechanisms through which insulin blood levels are maintained.

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Background: Guidelines recommend initiation of parenteral biologic or oral target-specific disease-modifying anti-rheumatic drugs (bDMARDs/tsDMARDs) in rheumatoid arthritis (RA) patients who do not adequately respond to conventional DMARDs.

Objectives: To compare the preferred route of administration of bDMARDs or tsDMARDs in RA patients who were previously treated with at least one type.

Methods: A cross-sectional survey was conducted of consecutive RA patients previously prescribed bDMARDs or tsDMARDs.

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Preauricular swelling followed by limited mouth opening can be a challenging diagnosis. All anatomical structures and related pathologies should be examined. A 41-year-old woman presented to the Emergency Room complaining of limited mouth opening, severe pain that was worse on chewing, and swelling over her right temporomandibular joint (TMJ) that had started 3 days previously.

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Background: In the treatment of obesity/metabolic syndrome, dietary measures traditionally focus on reducing carbohydrate/fat-related caloric intake. The possibility that changes in potassium consumption may be related to the achieved weight loss has not been previously explored.

Methods: Sixty-eight participants, with a mean age of 51.

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Diagnosing the density profile at the edge of high temperature fusion plasmas by an accelerated lithium beam is a known technique since decades. By knowledge of the relevant atomic physics rate coefficients, the plasma electron density profile can be calculated from the relatively calibrated light profile along the beam. Several additional possibilities have already been demonstrated: Charge Exchange Resonance Spectroscopy (CXRS) for ion temperature/flow and Zeeman polarimetry for edge plasma current; therefore the Li-beam diagnostic offers a wealth of information at the plasma edge.

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In order to optimize the scientific exploitation of JET (Joint European Torus) during the upcoming deuterium-tritium experiments, a set of diagnostic systems is being enhanced. These upgrades focus mainly on the experimental and operational conditions expected during tritium campaigns. It should be stressed that measurements relevant for burning plasmas are specifically targeted.

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A diagnostic instrument is described for the Experimental Advanced Superconducting Tokamak (EAST) for the measurement of the edge plasma electron density profile and plasma turbulence properties. An accelerated neutral lithium beam is injected into the tokamak and the Doppler shifted 670.8 nm light emission of the Li2p-2s transition is detected.

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Diagnostic alkali atom (e.g., lithium) beams are routinely used to diagnose magnetically confined plasmas, namely, to measure the plasma electron density profile in the edge and the scrape off layer region.

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Blood pressure (BP) variability (BPV) contributes to target organ damage independent of BP. The authors examined the effect of a 1-year multidisciplinary intervention on BPV in patients with the metabolic syndrome (MetS) as defined by criteria from the Third Report of the Adult Treatment Panel. Forty-four nondiabetic patients underwent clinical and biochemical profiling, 24-hour ambulatory BP monitoring (ABPM), body composition, carotid intima-media thickness, and carotid-femoral pulse wave velocity (PWV).

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Background: Circulating tumor cells (CTCs) in blood circulation may play a role in monitoring and even in early detection of metastasis patients. Due to the limited presence of CTCs in blood circulation, viable CTCs isolation technology must supply a very high recovery rate.

Methods: Here, we implement design of experiments (DOE) methodology in order to optimize the Bio-Ferrography (BF) immunomagnetic isolation (IMI) procedure for the EGFR high positive CTCs application.

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Background: The epidermal growth factor receptor (EGFR) is overexpressed in carcinoma. In some cases, including in colorectal cancer, it is used as a therapeutic target. Bio-Ferrography is a nondestructive method for isolating magnetized cells and tissues from a fluid onto a glass slide based on their interaction with an external, strong, and focused magnetic field.

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Background: The epidermal growth factor receptor (EGFR) is overexpressed in carcinoma. In some cases, including in colorectal cancer, it is used as a therapeutic target. Bio-Ferrography is a non-destructive method for isolating magnetized cells and tissues from a fluid onto a glass slide based on their interaction with an external, strong and focused magnetic field.

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We introduce an upgraded version of a tomographical system which is built up from Absolute Extreme Ultraviolet-type (AXUV) detectors and has been installed on the Tokamak à Configuration Variable (TCV). The system is suitable for the investigation of fast radiative processes usually observed in magnetically confined high-temperature plasmas. The upgrade consists in the detector protection by movable shutters, some modifications to correct original design errors and the improvement in the data evaluation techniques.

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Background: Multiple factors are involved in the pathogenesis of hypertension in the obese individual

Objective: To evaluate the role of a decrease in sympathetically mediated thermogenesis and the effect of the correlation between the plasma leptin and daily urinary nitric oxide levels on obesity-related hypertension.

Methods: We evaluated three groups: 25 obese hypertensive patients (age 45.7 +/- 1.

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Whereas sitosterol and 24(28)-methylene cycloartanol were competitive inhibitors (with Ki = 26 microM and 14 microM, respectively), 24(R,S)-25-epiminolanosterol was found to be a potent non-competitive inhibitor (Ki = 3.0 nM) of the S-adenosyl-L-methionine-C-24 methyl transferase from sunflower embryos. Because the ground state analog, 24(R,S)-oxidolanosterol, failed to inhibit the catalysis and 25-azalanosterol inhibited the catalysis with a Ki of 30 nM we conclude that the aziridine functions in a manner similar to the azasteriod (Rahier, A.

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The coumarin phytoalexins ayapin and scopoletin accumulate in longitudinal stem sections of sunflower (Helianthus annuus L., Compositae) following inoculation with fungi both pathogenic (Alternaria helianthi) and nonpathogenic (Helminthosporium carbonum) to this plant. Both compounds were induced more rapidly, and they attained higher levels in tissue inoculated with the heterologous pathogen H.

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Cycloheximide and compactin were added to cell suspension cultures of DIOSCOREA DELTOIDEA. Cycloheximide inhibited growth and diosgenin biosynthesis completely at 40 mg/l when added during the growth phase. Compactin partially inhibited growth and diosgenin production at 100 microg/l when added during the growth phase.

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The aglycon form of the steroidal sapogenin furost -5-ene-3 beta, 22,26-triol, 3 beta- chacotrioside 26 beta-D-glucopyranoside was isolated from cell suspension cultures of Dioscorea deltoidea and its molecular structure was determined by mass spectrometry and 1H and 13C n.m.r.

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In the present work we examined the potential benefits of the continuous culture (chemostat) technique at improving biomass yields of Mentha and Dioscorea cells and product formation (diosgenin) by Dioscorea cells. In contrast to Mentha cells, Dioscorea cells were sensitive to mechanical agitation in the exponential growth phase and could only be grown in a bubble column type fermentor. Maximal biomass yield of 0.

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The effect of nitrogen and carbon sources on growth and diosgenin production was studied with Dioscorea deltoidea cells which were grown under defined conditions in a chemostat, and transferred to batch cultures. Both ammonium and nitrate nitrogen were required for growth and steroid production; diosgenin production was maximal at higher amounts of nitrogen. The nature and concentration of the carbon source (sugar) had marked effects on diosgenin production.

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