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Ebru Fındıklı, Mustafa Gökçe, Vedat Nacitarhan, Mehmet Akif Camkurt, Hüseyin Avni Fındıklı, Selçuk Kardaş, Merve Coşgun Şahin, Mehmet Fatih Karaaslan
Objective: That treatment with second-generation antipsychotics (SGAs) causes metabolic side effects and atherosclerosis in patients with schizophrenia and bipolar disorder (BD) is well-known. Increased arterial stiffness is an important marker of arteriosclerosis and has been identified as an independent risk factor for cardiovascular diseases. We measured pulse wave velocity (PWV) as a marker of arteriosclerosis in patients with schizophrenia and BD who use SGAs. Methods: Patients and controls were collected from our psychiatry outpatient clinics or family medicine...
November 30, 2016: Clinical Psychopharmacology and Neuroscience: the Official Scientific Journal of the Korean College of Neuropsychopharmacology
Isabel E Kenny, Sahrai Saeed, Eva Gerdts, Helga Midtbø, Hilde Halland, Mai T Lønnebakken
BACKGROUND: Masked hypertension (MHT), defined as normal office blood pressure (BP) but high ambulatory BP, has been associated with increased cardiovascular risk. Although MHT has been associated with obesity, there is limited knowledge on the prevalence and covariates of MHT in obese cohorts. METHODS: Office and ambulatory BP recordings and other cardiovascular risk factors were assessed in 323 obese participants included in the fat-associated cardiovascular dysfunction study (mean age 48...
October 21, 2016: Blood Pressure Monitoring
Dallas M Smuin, William L Hennrikus
BACKGROUND: The pucker sign, also called skin tenting, indicates significant displacement of the supracondylar fracture and can be a cause for alarm. The purpose of this study is to compare a cohort of patients with type III supracondylar fractures presenting with a pucker sign to a group without a pucker sign by evaluating neurovascular injury at presentation, need for open reduction, persistent neurovascular injury, range of motion, and carrying angle at final follow-up. METHODS: A retrospective review was performed for Gartland type III extension type supracondylar fractures...
October 21, 2016: Journal of Pediatric Orthopedics
Jingchuan Guo, Akira Fujiyoshi, Kamal Masaki, Abhisek Vishnu, Aya Kadota, Emma J M Barinas-Mitchell, Takashi Hisamatsu, Vasudha Ahuja, Naoyuki Takashima, Rhobert W Evans, Bradley J Willcox, Katsuyuki Miura, Beatriz Rodriguez, Hirotsugu Ueshima, Lewis H Kuller, Akira Sekikawa
OBJECTIVE: A few studies have examined the longitudinal association of blood pressure (BP) with arterial stiffness progression, and the results were inconsistent. The objective of this study was to investigate the roles of initial BP and its longitudinal change on the progression of arterial stiffness measured using brachial-ankle pulse wave velocity (baPWV). METHOD: Study participants (n = 656) were from population-based samples of healthy men aged 40-49 years at baseline (213 White Americans, 47 African-Americans, 152 Japanese Americans and 244 Japanese in Japan)...
October 20, 2016: Journal of Hypertension
F Tumino, C S Casari, M Passoni, C E Bottani, A Li Bassi
Two-dimensional (2D) ZnO structures have been deposited on the Au(111) surface by means of the pulsed laser deposition technique. In situ scanning tunneling microscopy and scanning tunneling spectroscopy measurements have been performed to characterize morphological, structural and electronic properties of 2D ZnO at the nanoscale. Starting from a sub-monolayer coverage, we investigated the growth of ZnO, identifying different atomic layers (up to the fifth). At low coverage, we observed single- and bi-layer nanocrystals, characterized by a surface moiré pattern that is associated to a graphene-like ZnO structure...
October 24, 2016: Nanotechnology
Duy Dao, S M A Salehizadeh, Yeon Noj, Jo Woon Chong, Chae Cho, Dave Mcmanus, Chad E Darling, Yitzhak Mendelson, Ki H Chon
Motion and noise artifacts (MNAs) impose limits on the usability of the photoplethysmogram (PPG), particularly in the context of ambulatory monitoring. MNAs can distort PPG, causing erroneous estimation of physiological parameters such as heart rate (HR) and arterial oxygen saturation (SpO2). In this study we present a novel approach, "TifMA," based on using the Time-frequency spectrum of PPG to first detect the MNA-corrupted data and next discard the non-usable part of the corrupted data. The term "non-usable" refers to segments of PPG data from which the HR signal cannot be recovered accurately...
October 21, 2016: IEEE Journal of Biomedical and Health Informatics
Zhuochen Wang, Karl Heath Martin, Wenbin Huang, Paul A Dayton, Xiaoning Jiang
Techniques to image the microvasculature may play an important role in imaging tumor-related angiogenesis and vasa vasorum associated with vulnerable atherosclerotic plaques. However, the microvasculature associated with these pathologies is difficult to detect using traditional B-mode ultrasound or even harmonic imaging due to small vessel size and poor differentiation from surrounding tissue. Acoustic angiography, a microvascular imaging technique which utilizes superharmonic imaging (detection of higher order harmonics of microbubble response), can yield a much higher contrast to tissue ratio (CTR) than second harmonic imaging methods...
October 20, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
V Luzzi, G Di Carlo, M Saccucci, G Ierardo, E Guglielmo, M Fabbrizi, A M Zicari, M Duse, F Occasi, G Conti, E Leonardi, A Polimeni
OBJECTIVE: Sleep-disordered breathing (SDB) is among the most common diseases and includes a group of pathological conditions that form a severity continuum from primary snoring (PS) to obstructive sleep apnea (OSA). SDB presents a multifactorial etiology and in children, it is often linked to adenotonsillar hypertrophy, which may lead to an alteration of the breathing pattern. Therefore, several studies hinted at the existence of a correlation between SDB and the alteration of craniofacial growth...
October 2016: European Review for Medical and Pharmacological Sciences
Abdullahi Ibrahim Uba, Haşim Ozgur Tabakoglu, Umar Aliyu Abdullahi, Musbahu Muhammad Sani
Thermal effect of dual wavelength (980 & 1064nm) laser application in skin incision closure was assessed on 18 male and female Wister rats. 1cm-long Incisions were made on the shaved dorsal region of 220-250g animals. The incisions were closed by laser irradiation at 1W and exposure time, 5 seconds in Continuous wave mode (CW) and 1W and exposure time, 10 seconds in pulsed mode to deliver a total energies, 5J and 10J per spot onto the incisions respectively. Animals from each group were sacrificed at 0th, 4th and 7th days and the skin samples of the weld area were excised for histological analysis using H&E Stain...
October 24, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Antonia G Zogka, Abdelwahid Mellouki, Manolis N Romanias, Yuri Bedjanian, Mahmoud Idir, Benoit Grosselin, Veronique Daele
The rate coefficients for the reactions of OH and Cl with 1-methoxy 2-propyl acetate (MPA) in the gas phase were measured using absolute and relative methods. The kinetic study on the OH-reaction was conducted in the temperature (263-373) K and pressure (1-760) Torr ranges using the pulsed laser photolysis-laser induced fluorescence technique, a low pressure fast flow tube reactor-quadrupole mass spectrometer and an atmospheric simulation chamber-GC/FID. The derived Arrhenius expression is kMPA+OH(T)=(2.01±0...
October 24, 2016: Journal of Physical Chemistry. A
Han Yu, Quan Sun, Kosei Ueno, Tomoya Oshikiri, Atsushi Kubo, Yasutaka Matsuo, Hiroaki Misawa
The extraordinary optical properties of coupled plasmonic nanostructures make these materials potentially useful in many applications; thus, they have received enormous attentions in basic and applied research. Coupled plasmon modes have been characterized predominantly using far-field spectroscopy. In near-field spectroscopy, the spectral response of local field enhancement in coupled plasmonic nanostructures remains largely unexplored, especially experimentally. Here, we investigate the coupled gold dolmen nanostructures in the near field using photoemission electron microscopy (PEEM), with wavelength-tunable femtosecond laser pulses as an excitation source...
October 24, 2016: ACS Nano
Alp Yıldırım, Mustafa Serkan Karakaş, Ali Yaşar Kılınç, Refik Emre Altekin, Ali Selim Yalçınkaya
OBJECTIVE: This study was conducted to evaluate arterial structure and function with assessment of pulse wave velocity (PWV) and carotid intima-media thickness (CIMT) in patients with Behçet's disease (BD). METHODS: Thirty patients (13 female, 17 male) with BD and 30 age, sex-matched healthy controls (12 female, 18 male) with no known cardiovascular disease were enrolled in this study. Carotid-femoral PWV and CIMT were measured. RESULTS: PWV was higher in BD patients compared with control group (6...
October 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
Dengkui DU, Shirong Chen, Gang Yi, Pan Wang, Ying Tang, Liwen Zheng, Junnan Chen
Objective To investigate the effect of low-intensity pulsed ultrasound (LIPUS) on the extracellular matrix synthesis of human osteoarthritis (OA) chondrocytes and explore the underlying mechanism. Methods Human osteoarthritis chondrocytes were collected from abandoned articular cartilage. Then the cells were cultured and identified by toluidine blue staining and immunocytochemical staining of type 2 collagen. The passage 2 cells were randomly divided into 3 groups: control OA group, 30 mW/cm(2) LIPUS-treated OA group, 30 mW/cm(2) LIPUS combined with 5 μmol/L LY294002-treated OA group...
November 2016: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
Ashley Page, David Perry, Philip Young, Daniel A Mitchell, Bruno G Frenguelli, Patrick R Unwin
A vast range of interfacial systems exhibit charge heterogeneities on the nanoscale. These differences in local surface charge density are challenging to visualize, but recent work has shown the scanning ion conductance microscope (SICM) to be a very promising tool to spatially resolve and map surface charge and topography via a hopping potential sweep technique with a single nanopipette probe, with harmonic modulation of a bias applied between quasi-reference counter electrodes in the nanopipette and bulk solution, coupled with lock-in detection...
October 24, 2016: Analytical Chemistry
Li Zhao, Marta Vidorreta, Salil Soman, John A Detre, David C Alsop
PURPOSE: To improve pseudo-continuous arterial spin labeling (PCASL) robustness to off-resonance and pulsatile blood flow velocity. METHODS: Bloch equations were solved to evaluate the effect of labeling parameters in a pulsatile flow model for a range of off-resonance. Experimental confirmation was achieved in volunteers using linear phase increase between labeling pulses to approximate off-resonance errors. We first assessed the location of the labeling plane in four volunteers...
October 23, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Vincent Gras, Alexandre Vignaud, Alexis Amadon, Franck Mauconduit, Denis Le Bihan, Nicolas Boulant
PURPOSE: A multispoke specific absorption rate (SAR) -aware pulse design approach for homogeneous multiple-slice small and large flip angle (FA) excitations with parallel transmission is proposed. The approach aims at optimizing in a slice-specific manner the spokes locations and radiofrequency pulses. METHODS: The problem is posed as a set of slice-specific magnitude-least-squares problems, linked together by hardware and SAR constraints, and solved jointly using an active-set algorithm...
October 23, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Desmond H Y Tse, Christopher J Wiggins, Benedikt A Poser
PURPOSE: In order to fully benefit from the improved signal-to-noise and contrast-to-noise ratios at 9.4T, the challenges of B1+ inhomogeneity and the long acquisition time of high-resolution 2D gradient-recalled echo (GRE) imaging were addressed. THEORY AND METHODS: Flip angle homogenized excitations were achieved by parallel transmission (pTx) of 3-spoke pulses, designed by magnitude least-squares optimization in a slice-by-slice fashion; the acquisition time reduction was achieved by simultaneous multislice (SMS) pulses...
October 23, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
Sergio Battiato, Jean-Luc Deschanvres, Hervé Roussel, Laetitia Rapenne, Béatrice Doisneau, Guglielmo G Condorelli, David Muñoz-Rojas, Carmen Jiménez, Graziella Malandrino
Conventional and Pulsed Liquid Injection MOCVD processes (C-MOCVD and PLI-MOCVD) have been explored as synthetic routes for the growth of BaMgF4 on Si (100) and single crystalline SrTiO3 (100) substrates. For the two applied approaches, the volatile, thermally stable β-diketonate complexes Ba(hfa)2tetraglyme and Mg(hfa)2(diglyme)2(H2O)2 have been used as single precursors (C-MOCVD) or as a solution multimetal source (PLI-MOCVD). Structural characterization through X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM) analyses confirmed the formation of epitaxial BaMgF4 films on SrTiO3 substrates...
October 24, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Xiong Pu, Mengmeng Liu, Linxuan Li, Chi Zhang, Yaokun Pang, Chunyan Jiang, Lihua Shao, Weiguo Hu, Zhong Lin Wang
The triboelectric nanogenerator (TENG) is a promising mechanical energy harvesting technology, but its pulsed output and the instability of input energy sources make associated energy-storage devices necessary for real applications. In this work, feasible and efficient charging of Li-ion batteries by a rotating TENG with pulsed output current is demonstrated. In-depth discussions are made on how to maximize the power-storage efficiency by achieving an impedance match between the TENG and a battery with appropriate design of transformers...
January 2016: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
J Maarten de Moor, A Aiuppa, G Avard, H Wehrmann, N Dunbar, C Muller, G Tamburello, G Giudice, M Liuzzo, R Moretti, V Conde, B Galle
Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high-frequency gas monitoring to track the behavior of the volcano between 2014 and 2015 and to decipher magmatic versus hydrothermal contributions to the eruptions. Pulses of deeply derived CO2-rich gas (CO2/Stotal > 4...
August 2016: Journal of Geophysical Research. Solid Earth
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