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https://www.readbyqxmd.com/read/27914108/diagnostic-usefulness-of-dermoscopy-in-differentiating-lichen-aureus-from-nummular-eczema
#1
Kee Suck Suh, Jong Bin Park, Myeong Hyeon Yang, Soo Young Choi, Hyun Hwangbo, Min Soo Jang
Lichen aureus (LA) is a variant of pigmented purpuric dermatosis that is characterized clinically by rust macules, papules or plaques, mainly on the legs. In some cases, LA can be difficult to be distinguished from nummular eczema (NE) with the naked eye. Dermoscopy can be applied to skin lesions, revealing additional features that can be highly valuable for correct diagnosis. This study was conducted to investigate characteristic dermoscopic findings of LA and to identify distinctive features that can differentiate it from NE...
December 3, 2016: Journal of Dermatology
https://www.readbyqxmd.com/read/27913272/the-northeast-regional-sps-meeting-update-safety-pharmacology-innovations-and-applications
#2
REVIEW
Malar Pannirselvam, Tiffini Brabham, Alfred W Botchway, Donald B Hodges, Martin Traebert, Michael K Pugsley
The Safety Pharmacology Society (SPS) held a Northeast (NE) regional meeting in Boston, MA on May 13, 2016 at the Vertex Pharmaceuticals Incorporated site. There were 103 attendees from the pharmaceutical industry, contract research organizations (CROs), academia, and global regulatory agencies. An assortment of scientific topics were presented by 7 speakers that included broad topics in the cardiovascular (organ on chip, statistical power and translation of rat cardiovascular telemetry data and dual inhibition of IKr and IKs on QT interval prolongation) and central nervous system (in vitro platform for neurotoxicity, an integrated risk assessment of suicidal ideation and behavior, and EEG advances in safety pharmacology) and a novel topic discussing preclinical challenges faced in the development of a novel gene therapy...
November 29, 2016: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/27912885/tetrandrine-an-alkaloid-from-s-tetrandra-exhibits-anti-hypertensive-and-sleep-enhancing-effects-in-shr-via-different-mechanisms
#3
Yuan-Li Huang, Su-Ying Cui, Xiang-Yu Cui, Qing Cao, Hui Ding, Jin-Zhi Song, Xiao Hu, Hui Ye, Bin Yu, Zhao-Fu Sheng, Zi-Jun Wang, Yong-He Zhang
BACKGROUND: Sleep disorders have been found to be associated with hypertension in both cross-sectional and longitudinal epidemiological studies. Tetrandrine, a major component of Stephania tetrandra, is well known as an antihypertensive agent. The anti-hypertension mechanism mainly relies on its L-type calcium channel blocking property. In the previous study, tetrandrine revealed both anti-hypertension and hypnotic effects in spontaneously hypertensive rats (SHRs). PURPOSE: This study aims to elucidate whether the antihypertensive mechanism of tetrandrine in SHRs is relevant to its hypnotic effect...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27911881/low-energy-ne-ion-beam-induced-modifications-of-magnetic-properties-in-mnas-thin-films
#4
M Trassinelli, L Bernard Carlsson, S Cervera, M Eddrief, V H Etgens, E V Gafton, E Lacaze, E Lamour, A Lévy, S Macé, C Prigent, J-P Rozet, S Steydli, M Marangolo, D Vernhet
Investigations of the complex behavior of the magnetization of manganese arsenide thin films due to defects induced by irradiation of slow heavy ions are presented. In addition to the thermal hysteresis suppression already highlighted in Trassinelli et al (2014 Appl. Phys. Lett. 104 081906), we report here on new local magnetic features recorded by a magnetic force microscope at different temperatures close to the characteristic sample phase transition. Complementary measurements of the global magnetization in different conditions (applied magnetic field and temperatures) enable the film characterization to be completed...
December 2, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/27910862/methylphenidate-enhances-early-stage-sensory-processing-and-rodent-performance-of-a-visual-signal-detection-task
#5
Rachel L Navarra, Brian D Clark, Andrew T Gargiulo, Barry D Waterhouse
Methylphenidate (MPH) is used clinically to treat attention-deficit/hyperactivity disorder (ADHD) and off-label as a performance enhancing agent in healthy individuals. MPH enhances catecholamine transmission via blockade of norepinephrine (NE) and dopamine (DA) reuptake transporters. However, it is not clear how this action impacts neural circuits performing cognitive and sensorimotor functions driving performance enhancement. The dorsal lateral geniculate nucleus (dLGN) is the primary thalamic relay for visual information from the retina to the cortex and is densely innervated by NE-containing fibers from the locus coeruleus (LC), a pathway known to modulate state-dependent sensory processing...
December 2, 2016: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/27910678/first-results-from-the-thomson-scattering-diagnostic-on-proto-mpex
#6
T M Biewer, S Meitner, J Rapp, H Ray, G Shaw
A Thomson scattering (TS) diagnostic has been successfully implemented on the prototype Material Plasma Exposure eXperiment (Proto-MPEX) at Oak Ridge National Laboratory. The diagnostic collects the light scattered by plasma electrons and spectroscopically resolves the Doppler shift imparted to the light by the velocity of the electrons. The spread in velocities is proportional to the electron temperature, while the total number of photons is proportional to the electron density. TS is a technique used on many devices to measure the electron temperature (Te) and electron density (ne) of the plasma...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910670/alignment-and-absolute-wavelength-calibration-of-imaging-bragg-spectrometers
#7
G Bertschinger, O Marchuk, R Barnsley
In the present and the next generation of fusion devices, imaging Bragg spectrometers are key diagnostics to measure plasma parameters in the hot core, especially ion temperature and plasma rotation. The latter quantities are routinely obtained using the Doppler-width and -shift of the emitted spectral lines, respectively. Line shift measurements require absolute accuracies Δλ/λ of about 10 ppm, where λ-is the observed wavelength. For ITER and the present fusion devices, spectral lines of He-and H-like argon, iron, and krypton as well as Ne-like tungsten are foreseen for the measurements...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910663/multi-energy-sxr-cameras-for-magnetically-confined-fusion-plasmas-invited
#8
L F Delgado-Aparicio, J Maddox, N Pablant, K Hill, M Bitter, J E Rice, R Granetz, A Hubbard, J Irby, M Greenwald, E Marmar, K Tritz, D Stutman, B Stratton, P Efthimion
A compact multi-energy soft x-ray camera has been developed for time, energy and space-resolved measurements of the soft-x-ray emissivity in magnetically confined fusion plasmas. Multi-energy soft x-ray imaging provides a unique opportunity for measuring, simultaneously, a variety of important plasma properties (Te, nZ, ΔZeff, and ne,fast). The electron temperature can be obtained by modeling the slope of the continuum radiation from ratios of the available brightness and inverted radial emissivity profiles over multiple energy ranges...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910657/time-dependent-analysis-of-visible-helium-line-ratios-for-electron-temperature-and-density-diagnostic-using-synthetic-simulations-on-nstx-u
#9
J M Muñoz Burgos, T Barbui, O Schmitz, D Stutman, K Tritz
Helium line-ratios for electron temperature (Te) and density (ne) plasma diagnostic in the Scrape-Off-Layer (SOL) and edge regions of tokamaks are widely used. Due to their intensities and proximity of wavelengths, the singlet, 667.8 and 728.1 nm, and triplet, 706.5 nm, visible lines have been typically preferred. Time-dependency of the triplet line (706.5 nm) has been previously analyzed in detail by including transient effects on line-ratios during gas-puff diagnostic applications. In this work, several line-ratio combinations within each of the two spin systems are analyzed with the purpose of eliminating transient effects to extend the application of this powerful diagnostic to high temporal resolution characterization of plasmas...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910613/feasibility-of-line-ratio-spectroscopy-on-helium-and-neon-as-edge-diagnostic-tool-for-wendelstein-7-x
#10
T Barbui, M Krychowiak, R König, O Schmitz, J M Muñoz Burgos, B Schweer, A Terra
A beam emission spectroscopy system on thermal helium (He) and neon (Ne) has been set up at Wendelstein 7-X to measure edge electron temperature and density profiles utilizing the line-ratio technique or its extension by the analysis of absolutely calibrated line emissions. The setup for a first systematic test of these techniques of quantitative atomic spectroscopy in the limiter startup phase (OP1.1) is reported together with first measured profiles. This setup and the first results are an important test for developing the technique for the upcoming high density, low temperature island divertor regime...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910589/improved-cross-calibration-of-thomson-scattering-and-electron-cyclotron-emission-with-ech-on-diii-d
#11
M W Brookman, M E Austin, A G McLean, T N Carlstrom, A W Hyatt, J Lohr
Thomson scattering produces ne profiles from measurement of scattered laser beam intensity. Rayleigh scattering provides a first calibration of the relation ne ∝ ITS, which depends on many factors (e.g., laser alignment and power, optics, and measurement systems). On DIII-D, the ne calibration is adjusted against an absolute ne from the density-driven cutoff of the 48 channel 2nd harmonic X-mode electron cyclotron emission system. This method has been used to calibrate Thomson ne from the edge to near the core (r/a > 0...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910581/spectral-survey-of-helium-lines-in-a-linear-plasma-device-for-use-in-helios-imaging
#12
H B Ray, T M Biewer, D T Fehling, R C Isler, E A Unterberg
Fast visible cameras and a filterscope are used to examine the visible light emission from Oak Ridge National Laboratory's Proto-MPEX. The filterscope has been configured to perform helium line ratio measurements using emission lines at 667.9, 728.1, and 706.5 nm. The measured lines should be mathematically inverted and the ratios compared to a collisional radiative model (CRM) to determine Te and ne. Increasing the number of measurement chords through the plasma improves the inversion calculation and subsequent Te and ne localization...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910559/multi-energy-x-ray-detector-calibration-for-t-and-impurity-density-n-measurements-of-mcf-plasmas
#13
J Maddox, N Pablant, P Efthimion, L Delgado-Aparicio, K W Hill, M Bitter, M L Reinke, M Rissi, T Donath, B Luethi, B Stratton
Soft x-ray detection with the new "multi-energy" PILATUS3 detector systems holds promise as a magnetically confined fusion (MCF) plasma diagnostic for ITER and beyond. The measured x-ray brightness can be used to determine impurity concentrations, electron temperatures, ne(2)Zeff products, and to probe the electron energy distribution. However, in order to be effective, these detectors which are really large arrays of detectors with photon energy gating capabilities must be precisely calibrated for each pixel...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910507/the-progress-in-development-of-edge-tangential-thomson-scattering-system-on-hl-2a-tokamak
#14
C H Liu, Y Huang, Y Q Wang, Z Feng, Z P Hou, B Z Fu
The edge tangential Thomson scattering system (ETTSS) was developed for the first time on a HL-2A tokamak. A Nd:YAG laser with a 1064 nm wavelength, 4 J energy, and 30 Hz repetition rate is employed on the ETTSS. The laser beam injects the plasma in the tangential direction on the mid-plane of the machine, and the angles between the laser injection direction and the scattered light collection direction are in the range from 157.5° to 162.8°. The scattered light collection optics with 0.21-0.47 magnification is utilized to collect the scattered light of measurement range from R = 1900 mm to 2100 mm (the normalized radius is from r/a = 0...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910482/upgraded-divertor-thomson-scattering-system-on-diii-d
#15
F Glass, T N Carlstrom, D Du, A G McLean, D A Taussig, R L Boivin
A design to extend the unique divertor Thomson scattering system on DIII-D to allow measurements of electron temperature and density in high triangularity plasmas is presented. Access to this region is selectable on a shot-by-shot basis by redirecting the laser beam of the existing divertor Thomson system inboard - beneath the lower floor using a moveable, high-damage threshold, in-vacuum mirror - and then redirecting again vertically. The currently measured divertor region remains available with this mirror retracted...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910362/a-novel-cost-effective-multi-point-thomson-scattering-system-on-the-pegasus-toroidal-experiment-invited
#16
D J Schlossberg, G M Bodner, M W Bongard, R J Fonck, J A Reusch, C Rodriguez Sanchez
A novel, cost-effective, multi-point Thomson scattering system has been designed, implemented, and operated on the Pegasus Toroidal Experiment. Leveraging advances in Nd:YAG lasers, high-efficiency volume phase holographic transmission gratings, and increased quantum-efficiency Generation 3 image-intensified charge coupled device (ICCD) cameras, the system provides Thomson spectra at eight spatial locations for a single grating/camera pair. The on-board digitization of the ICCD camera enables easy modular expansion, evidenced by recent extension from 4 to 12 plasma/background spatial location pairs...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910316/measurement-of-the-deuterium-balmer-series-line-emission-on-east
#17
C R Wu, J Huang, W Gao, W Gao, Z Xu, J F Chang, Y M Hou, Z Jin, J C Xu, Y M Duan, P F Zhang, Y J Chen, L Zhang, Z W Wu, J G Li
Volume recombination plays an important role towards plasma detachment for magnetically confined fusion devices. High quantum number states of the Balmer series of deuterium are used to study recombination. On EAST (Experimental Advanced Superconducting Tokamak), two visible spectroscopic measurements are applied for the upper/lower divertor with 13 channels, respectively. Both systems are coupled with Princeton Instruments ProEM EMCCD 1024B camera: one is equipped on an Acton SP2750 spectrometer, which has a high spectral resolution ∼0...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909917/strength-training-prior-to-muscle-injury-potentiates-low-level-laser-therapy-lllt-induced-muscle-regeneration
#18
Samuel Rodrigues Lourenço Morais, Alexandre Ginei Goya, Úrsula Urias, Paulo Roberto Jannig, Aline Villa Nova Bacurau, Wagner Garcez Mello, Paula Lazilha Faleiros, Sandra Helena Penha Oliveira, Valdir Gouveia Garcia, Edilson Ervolino, Patricia Chakur Brum, Rita Cássia Menegati Dornelles
We evaluated whether strength training (ST) performed prior to skeletal muscle cryolesion would act as a preconditioning, improving skeletal muscle regeneration and responsiveness to low-level laser therapy (LLLT). Wistar rats were randomly assigned into non-exercised (NE), NE plus muscle lesion (NE + LE), NE + LE plus LLLT (NE + LE + LLLT), strength training (ST), ST + LE, and ST + LE + LLLT. The animals performed 10 weeks of ST (climbing ladder; 3× week; 80% overload). Forty-eight hours after the last ST session, tibialis anterior (TA) cryolesion was induced and LLLT (InGaAlP, 660 nm, 0...
December 1, 2016: Lasers in Medical Science
https://www.readbyqxmd.com/read/27908529/a-new-marker-insulinoma-associated-protein-1-insm1-for-high-grade-neuroendocrine-carcinoma-of-the-uterine-cervix-analysis-of-37-cases
#19
Shiho Kuji, Reiko Watanabe, Yuichi Sato, Takashi Iwata, Yasuyuki Hirashima, Munetaka Takekuma, Ichiro Ito, Masato Abe, Ryo Nagashio, Katsuhiro Omae, Daisuke Aoki, Toru Kameya
OBJECTIVE: High-grade neuroendocrine carcinoma of uterine cervix (HGNCUC) has been recognized as a highly malignant tumor. Therapeutic strategy specific to neuroendocrine (NE) tumors needs to be considered, but some cases wouldn't allow simple final diagnoses. Insulinoma-associated protein 1 (INSM1), which is a zinc-finger transcription factor related to NE differentiation, is frequently expressed in NE tumors. We investigated the association between INSM1 and HGNCUC, and the possibility of INSM1 as a useful NE marker...
November 28, 2016: Gynecologic Oncology
https://www.readbyqxmd.com/read/27905600/vuv-photochemistry-of-the-h2oco-complex-in-noble-gas-matrices-formation-of-the-ohco-complex-and-the-hoco-radical
#20
Sergey V Ryazantsev, Luís Duarte, Vladimir I Feldman, Leonid Khriachtchev
Vacuum ultraviolet (VUV, 130-170 nm) photochemistry of the H2OCO complex is studied by matrix-isolation infrared spectroscopy. The H2OCO complexes in Ne, Ar, Kr, and Xe matrices are generated by ultraviolet (UV, 193 and 250 nm) photolysis of formic acid (HCOOH). VUV photolysis of the H2OCO complexes is found to lead to the formation of the OHCO radical-molecule complexes and trans-HOCO radicals. It is shown that the matrix material, local matrix morphology, and possibly the H2OCO complex geometry strongly affect the VUV photolysis pathways...
December 1, 2016: Physical Chemistry Chemical Physics: PCCP
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