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https://www.readbyqxmd.com/read/28815697/case-control-study-of-chronic-low-level-exposure-of-inorganic-arsenic-species-and-non-melanoma-skin-cancer
#1
Tae-Hoon Kim, Jeong-Wook Seo, Young-Seoub Hong, Ki-Hoon Song
A significant relationship between arsenic exposure and non-melanoma skin cancer (NMSC) is well known. The toxicity of arsenics which develop NMSC is dependent on their species. Accordingly, total arsenic levels are unreliable for risk assessment of NMSC. However, there are few studies on quantitative exposure assessment of arsenic species in NMSC patients. To validate the contribution of each arsenic species to NMSC, we compared the creatinine-adjusted urinary concentration of arsenic species in NMSC patients and community controls...
August 16, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28815683/phase-imaging-quality-improvement-by-modification-of-afm-probes-cantilever
#2
J Skibinski, J Rebis, L Kaczmarek, T Wejrzanowski, T Plocinski, K Rozniatowski
Imaging of the surface of materials by atomic force microscopy under tapping and phase imaging mode, with use of modified probes is addressed. In this study, the circularly shaped holes located in varying distance from the probe base, were cut out by focused ion beam. Such modification was a consequence of the results of the previous experiments (probe tip sharpening and cantilever thinning) where significant improvement of image quality in tapping and phase imaging mode has been revealed. The solution proposed herein gives similar results, but is much simpler from the technological point of view...
August 16, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28815431/central-peripheral-differences-in-audiovisual-and-visuotactile-event-perception
#3
Yi-Chuan Chen, Daphne Maurer, Terri L Lewis, Charles Spence, David I Shore
We examined audiovisual and visuotactile integration in the central and peripheral visual field using visual fission and fusion illusions induced by sounds or taps. The fission illusion occurs when a single flash is perceived as two flashes if paired with two beeps or taps; the fusion illusion, by contrast, occurs when two flashes are perceived as a single flash if the flashes are paired with a single beep or tap. Beeps and taps induced similar patterns of illusions: the fission illusion was larger in the periphery than in the center, whereas the fusion illusion was larger in the center than in the periphery...
August 16, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28814740/a-flexible-electret-membrane-with-persistent-electrostatic-effect-and-resistance-to-harsh-environment-for-energy-harvesting
#4
Xiao Huiming, Chen Gangjin, Chen Xuming, Chen Zhi
A novel flexible electret membrane, exhibiting persistent electrostatic effect, distinctive temperature stability and outstanding capability of resistance to harsh environment and fatigue, is demonstrated by experiment. Its excellent electret performance is correlated to the synergy of three factors, which are space charge injection, dipole orientation and interfacial polarization according to the analysis of charge storage mechanism. This electret membrane is provided with sandwich configuration PTFE/THV/PTFE, prepared by hot pressing method and thermal charging technology...
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28813899/the-effects-of-auditory-and-visual-cues-on-timing-synchronicity-for-robotic-rehabilitation
#5
Brittney A English, Ayanna M Howard
In this paper, we explore how the integration of auditory and visual cues can help teach the timing of motor skills for the purpose of motor function rehabilitation. We conducted a study using Amazon's Mechanical Turk in which 106 participants played a virtual therapy game requiring wrist movements. To validate that our results would translate to trends that could also be observed during robotic rehabilitation sessions, we recreated this experiment with 11 participants using a robotic wrist rehabilitation system as means to control the therapy game...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813361/transformational-leadership-in-sport-current-status-and-future-directions
#6
REVIEW
Calum A Arthur, Nicolas Bastardoz, Robert Eklund
Borrowed from organizational psychology, the concept of transformational leadership has now been applied to a sport context for a decade. Our review covers and critically discusses empirical articles published on this growing topic. However, because the majority of studies used cross-sectional designs and single-source questionnaires to tap what has been a fuzzy construct, current theoretical and methodological issues impede understanding of whether transformational leadership matters for sport outcomes. To make a difference to applied practice and policy, the transformational leadership construct requires a refined definition and stronger empirical tests allowing for robust causal inference...
August 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28813229/cortical-networks-for-correcting-errors-in-sensorimotor-synchronization-depend-on-the-direction-of-asynchrony
#7
K J Jantzen, Benjamin R Ratcliff, McNeel G Jantzen
Recent work provides clues that different cortical mechanisms may be employed when correcting for errors in sensorimotor synchronization that increase tap-tone asynchrony compared with those that decrease it. The authors tested this hypothesis by recording 64-channel electroencephalography while participants synchronized with an auditory metronome. We systematically introduced positive and negative phase-shift perturbations that were either liminal (10%) and subliminal (3%). We used a distributed source modeling approach to evaluate oscillatory activity and connectivity of discrete cortical sources...
August 16, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28813008/dietary-fructose-enhances-the-ability-of-low-concentrations-of-angiotensin-ii-to-stimulate-proximal-tubule-na%C3%A2-%C2%BA-reabsorption
#8
Agustin Gonzalez-Vicente, Pablo D Cabral, Nancy J Hong, Jessica Asirwatham, Nianxin Yang, Jessica M Berthiaume, Fernando P Dominici, Jeffrey L Garvin
Fructose-enriched diets cause salt-sensitive hypertension. Proximal tubules (PTs) reabsorb 70% of the water and salt filtered through the glomerulus. Angiotensin II (Ang II) regulates this process. Normally, dietary salt reduces Ang II allowing the kidney to excrete more salt, thereby preventing hypertension. We hypothesized that fructose-enriched diets enhance the ability of low concentrations of Ang II to stimulate PT transport. We measured the effects of a low concentration of Ang II (10(-12) mol/L) on transport-related oxygen consumption (QO₂), and Na/K-ATPase and Na/H-exchange (NHE) activities and expression in PTs from rats consuming tap water (Control) or 20% fructose (FRUC)...
August 16, 2017: Nutrients
https://www.readbyqxmd.com/read/28812195/design-and-evaluation-of-a-compact-photocatalytic-reactor-for-water-treatment
#9
Marko Kete, Olena Pliekhova, Lev Matoh, Urška Lavrenčič Štangar
A compact reactor for photocatalytic oxidation and photocatalytic ozonation water treatment was developed and evaluated by using four model pollutants. Additionally, combinations of pollutants were evaluated. Specially produced Al2O3 porous reticulated monolith foams served as TiO2 carriers, offering a high surface area support. UV lamps were placed in the interior to achieve reduced dimensions of the reactor (12 cm in diameter × 20 cm in height). Despite its small size, the overall photocatalytic cleaning capacity was substantial...
August 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28811799/diversity-physiochemical-and-phylogenetic-analyses-of-bacteria-isolated-from-various-drinking-water-sources
#10
Neveen H Eid, Huda A Al Doghaither, Taha A Kumosani, Munazza Gull
OBJECTIVE: To evaluate the indigenous bacterial strains of drinking water from the most commercial water types including bottled and filtered water that are currently used in Saudi Arabia. METHODS: Thirty randomly selected commercial brands of bottled water were purchased from Saudi local markets. Moreover, samples from tap water and filtered water were collected in sterilized glass bottles and stored at 4°C. Biochemical analyses including pH, temperature, lactose fermentation test (LAC), indole test (IND), methyl red test (MR), Voges-Proskauer test (VP), urease test (URE), catalase test (CAT), aerobic and anaerobic test (Ae/An) were measured...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28810710/testing-convergent-evolution-in-auditory-processing-genes-between-echolocating-mammals-and-the-aye-aye-a-percussive-foraging-primate
#11
Richard J Bankoff, Michael Jerjos, Baily Hohman, M Elise Lauterbur, Logan Kistler, George H Perry
Several taxonomically distinct mammalian groups-certain microbats and cetaceans (e.g., dolphins)-share both morphological adaptations related to echolocation behavior and strong signatures of convergent evolution at the amino acid level across seven genes related to auditory processing. Aye-ayes (Daubentonia madagascariensis) are nocturnal lemurs with a specialized auditory processing system. Aye-ayes tap rapidly along the surfaces of trees, listening to reverberations to identify the mines of wood-boring insect larvae; this behavior has been hypothesized to functionally mimic echolocation...
July 1, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28810222/bio-electro-oxidation-of-indigo-carmine-by-using-microporous-activated-carbon-fiber-felt-as-anode-and-bioreactor-support
#12
Luane Ferreira Garcia, Ana Claudia Rodrigues Siqueira, Germán Sanz Lobón, Jossano Saldanha Marcuzzo, Benevides Costa Pessela, Eduardo Mendez, Telma Alves Garcia, Eric de Souza Gil
The bioremediation and electro-oxidation (EO) processes are included among the most promising cleaning and decontamination mechanisms of water. The efficiency of bioremediation is dictated by the biological actuator for a specific substrate, its suitable immobilization and all involved biochemical concepts. The EO performance is defined by the anode efficiency to perform the complete mineralization of target compounds and is highlighted by the low or null use of reagent. Recently, the combination of both technologies has been proposed...
August 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28808817/electrophysiological-modulation-in-an-effort-to-complete-illusory-figures-configuration-illusory-contour-and-closure-effects
#13
Tommaso Poscoliero, Massimo Girelli
Figure recognition process: From the coarse configuration standing from the background to the closure of a meaningful shape, was investigated by ERP technique. ERP components at different latencies from stimulus onset allowed to tap into the figure recognition process at discrete time-points when different cognitive operations take place. In this study, we present two experiments where the support-ratio (SR) of illusory figures was manipulated to vary continuously the recognition of geometrical figures. In the first experiment three shapes were used to vary the SR and the P1 component (80-130 ms) was modulated by the configuration-effect explained, in part for the first time, with the unbalanced physical stimulation between upper and lower visual field...
August 14, 2017: Brain Topography
https://www.readbyqxmd.com/read/28806668/combination-of-electrochemical-biosensor-and-textile-threads-a-microfluidic-device-for-phenol-determination-in-tap-water
#14
F R Caetano, E A Carneiro, D Agustini, L C S Figueiredo-Filho, C E Banks, M F Bergamini, L H Marcolino-Junior
Microfluidic devices constructed using low cost materials presents as alternative for conventional flow analysis systems because they provide advantages as low consumption of reagents and samples, high speed of analysis, possibility of portability and the easiness of construction and maintenance. Herein, is described for the first time the use of an electrochemical biosensor for phenol detection combined with a very simple and efficient microfluidic device based on commercial textile threads. Taking advantages of capillary phenomena and gravity forces, the solution transportation is promoted without any external forces or injection pump...
July 29, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28806664/porous-plga-microparticles-formed-by-one-step-emulsification-for-pulmonary-drug-delivery-the-surface-morphology-and-the-aerodynamic-properties
#15
Shinnosuke Nishimura, Taku Takami, Yoshihiko Murakami
In the present study, by using a newly developed one-step emulsification technique, we tried to prepare porous PLGA particles having a proper diameter and surface morphology in order to achieve both a high efficient delivery of the particles to the lungs and a phagocytosis-avoidance ability. We found that our porous particles have the very low tapped density of 0.04g/cm(3). Experimental and theoretical studies strongly suggest that the shape factor should not be determined only by the outline of the particles, although previous research assigned a value of 1 to the shape factor for particles regardless of the presence of pores and their distribution...
August 4, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28803601/ultrasound-guided-transversus-abdominis-plane-block-improves-postoperative-analgesia-and-early-recovery-in-patients-undergoing-retroperitoneoscopic-urologic-surgeries-a-randomized-controlled-double-blinded-trial
#16
Ge Qu, Xu-Lei Cui, Hong-Ju Liu, Zhi-Gang Ji, Yu-Guang Huang
Objective To evaluate the effects of ultrasound-guided transversus abdominis plane (TAP) block on postoperative analgesia and early recovery in patients undergoing retroperitoneoscopic urologic surgeries. Methods This was a randomized, controlled, double-blinded trial. Eligible patients scheduled for retroperitoneoscopic urologic surgeries were randomly assigned to two groups. Group TAP received ultrasound-guided TAP block with 0.5% ropivacaine 20 ml at 30 minutes before surgery, and Group C received TAP sham block with normal saline...
September 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
https://www.readbyqxmd.com/read/28801773/growth-performance-mineral-digestibility-and-blood-characteristics-of-ostriches-receiving-drinking-water-supplemented-with-varying-levels-of-chelated-trace-mineral-complex
#17
Hossein Seyfori, Hossein Ali Ghasemi, Iman Hajkhodadadi, Mohammad Hassan Nazaran, Maryam Hafizi
The effects of water supplementation of chelated trace minerals (CTM, which is named Bonzaplex designed with chelate compounds technology) on growth performance, apparent total tract digestibility (ATTD) of minerals, and some blood metabolites, TM, and antioxidant enzyme values in African ostriches were investigated from 8 to 12 months of age. A total of 20 8-month-old ostriches (five birds in five replicate pens) was randomly allocated into one of the following four treatments: (1) control (basal diet + tap water), (2) low CTM (basal diet +100 mg/bird/day CTM powder in tap water), (3) medium CTM (basal diet +1 g/bird/day CTM powder in tap water), and (4) high CTM (basal diet +2 g/bird/day CTM powder in tap water)...
August 11, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28801682/water-ingestion-decreases-cardiac-workload-time-dependent-in-healthy-adults-with-no-effect-of-gender
#18
Cathriona Rosemary Monnard, Erik Konrad Grasser
Ingestion of water entails a variety of cardiovascular responses. However, the precise effect remains elusive. We aimed to determine in healthy adults the effect of water on cardiac workload and to investigate potential gender differences. We pooled data from two controlled studies where blood pressure (BP) and heart rate (HR) were continuously recorded before and after the ingestion of 355 mL of tap water. Additionally, we calculated double product by multiplying systolic BP with HR and evaluated spectral parameters referring to vagal tone...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28801070/methodological-considerations-for-the-temporal-summation-of-second-pain
#19
Nathanial R Eckert, Charles J Vierck, Corey B Simon, Sachell Calderon, Yenisel Cruz-Almeida, Roland Staud, Roger B Fillingim, Joseph L Riley
Temporal summation of second pain (TSSP) is a psychophysical indication of a central pain encoding mechanism, potentially enhanced in pathological pain conditions. Low frequency repetitive stimulation of unmyelinated (C) nociceptors results in a progressive increase of pain intensity when thermal stimulation intensity remains constant. However, when using different methods of nociceptive delivery to the skin, both regularity and rate of pain enhancement with repetition varies between experiments. Specifically, repetitive ramping up and down from a neutral to a painful temperature has produced weak and inconsistent pain summation...
August 8, 2017: Journal of Pain: Official Journal of the American Pain Society
https://www.readbyqxmd.com/read/28800645/analysis-of-endogenous-lipids-during-intestinal-wound-healing
#20
Yunna Lee, Jieun Choo, Su Jin Kim, Gwangbeom Heo, Charalabos Pothoulakis, Yong-Hak Kim, Eunok Im
Intestinal wound healing is a new therapeutic goal for inflammatory bowel disease (IBD) as complete healing of the mucosa is the key element of clinical remission in IBD. Previous studies showed that termination of inflammation can be achieved by adding pro-resolving lipids like DHA and EPA exogenously. However, the roles of these lipids in mucosal healing have not been investigated. To recapitulate intestinal healing process, mice were received dextran sodium sulfate (DSS) for 7 days in the drinking water followed by regular tap water for 5 additional days...
2017: PloS One
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