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https://www.readbyqxmd.com/read/29466079/passive-recovery-reduces-fatigue-during-repeated-change-of-direction-sprints-in-basketball-players
#1
Maria C Madueno, Vincent J Dalbo, Joshua H Guy, Kate E Giamarelos, Tania Spiteri, Aaron T Scanlan
PURPOSE: To investigate the physiological and performance effects of active and passive recovery between repeated-change-of-direction (RCOD) sprints. METHODS: Eight semi-professional basketball players (age: 19.9 ± 1.5 yr; stature: 183.0 ± 9.6 cm; body mass: 77.7 ± 16.9 kg; body fat: 11.8 ± 6.3%; VO2peak : 46.1 ± 7.6 mL·kg-1 ·min-1 ) completed 12 x 20-m RCOD sprints (Agility 5-0-5 Tests) interspersed with 20 s of active (50% maximal aerobic speed) or passive recovery in a randomized cross-over design...
February 21, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29465979/nanoscale-studies-of-organic-radicals-surface-interface-and-spinterface
#2
M Benedetta Casu
In the last decade technology has brought significant changes to our lives, including new habits and a new view on social relationships. These technological innovations are based on several factors, one of which is miniaturization. This was made possible also due to the discovery and synthesis of new materials with characteristics at the nanoscale that are designed for specific purposes. This "on purpose" approach, joined to the development of preparation and growth methods, has led to use of thin films rather than bulk materials in devices...
February 21, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29461257/atomic-layer-deposited-high-k-dielectric-on-graphene-by-functionalization-through-atmospheric-plasma-treatment
#3
Jeong Woo Shin, Myung Hoon Kang, Seongkook Oh, Byung Chan Yang, Kwonil Seong, Hyo-Sok Ahn, Tae Hoon Lee, Jihwan An
Atomic layer deposited (ALD) dielectric films on graphene usually show non-continuous and rough morphology owing to the inert surface of graphene. Here, we demonstrate the deposition of thin and uniform ALD ZrO2 films without any seed layer on the chemical vapor deposited (CVD) graphene functionalized by atmospheric oxygen plasma treatment. Transmission electron microscopy (TEM) shows that the ALD ZrO2 films are also highly crystalline despite a low ALD temperature of 150 °C. The ALD ZrO2 film serves as an effective passivation layer for graphene, which is shown by negative shifts in the Dirac voltage and the enhanced air stability of graphene field-effect transistors (GFETs) after ALD of ZrO2...
February 20, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29451868/suppression-of-material-transfer-at-contacting-surfaces-the-effect-of-adsorbates-on-al-tin-and-cu-diamond-interfaces-from-first-principles-calculations
#4
Gregor Feldbauer, Michael Wolloch, Pedro O Bedolla, Josef Redinger, András Vernes, Peter Mohn
The effect of monolayers of oxygen (O) and hydrogen (H) on the possibility of material transfer at aluminium/titanium nitride (Al/TiN) and copper/diamond (Cu/C dia ) interfaces, respectively, were investigated within the framework of density functional theory (DFT). To this end the approach, contact, and subsequent separation of two atomically flat surfaces consisting of the aforementioned pairs of materials were simulated. These calculations were performed for the clean as well as oxygenated and hydrogenated Al and C dia surfaces, respectively...
February 16, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29449601/solar-thermo-coupled-electrochemical-oxidation-of-aniline-in-wastewater-for-the-complete-mineralization-beyond-an-anodic-passivation-film
#5
Dandan Yuan, Lei Tian, Zhida Li, Hong Jiang, Chao Yan, Jing Dong, Hongjun Wu, Baohui Wang
Herein, we report the solar thermal electrochemical process (STEP) aniline oxidation in wastewater for totally solving the two key obstacles of the huge energy consumption and passivation film in the electrochemical treatment. The process, fully driven by solar energy without input of any other energies, sustainably serves as an efficient thermoelectrochemical oxidation of aniline by the control of the thermochemical and electrochemical coordination. The thermocoupled electrochemical oxidation of aniline achieved a fast rate and high efficiency for the full minimization of aniline to CO 2 with the stability of the electrode and without formation of polyaniline (PAN) passivation film...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29438739/factors-influencing-degradation-of-trichloroethylene-by-sulfide-modified-nanoscale-zero-valent-iron-in-aqueous-solution
#6
Haoran Dong, Cong Zhang, Junmin Deng, Zhao Jiang, Lihua Zhang, Yujun Cheng, Kunjie Hou, Lin Tang, Guangming Zeng
Sulfide-modified nanoscale zero-valent iron (S/NZVI) has been considered as an efficient material to degrade trichloroethylene (TCE) in groundwater. However, some critical factors influencing the dechlorination of TCE by S/NZVI have not been investigated clearly. In this study, the effects of Fe/S molar ratio, initial pH, dissolved oxygen and particle aging on TCE dechlorination by S/NZVI (using dithionite as sulfidation reagent) were studied. Besides, the feasibility of reactivation of the aged-NZVI by sulfidation treatment was looked into...
February 7, 2018: Water Research
https://www.readbyqxmd.com/read/29434464/arm-cycling-combined-with-passive-leg-cycling-enhances-vo2peak-in-persons-with-spinal-cord-injury-above-the-sixth-thoracic-vertebra
#7
Tom Tørhaug, Berit Brurok, Jan Hoff, Jan Helgerud, Gunnar Leivseth
Objective: To test whether passive leg cycling (PLC) during arm cycling ergometry (ACE) affects peak oxygen uptake (VO2peak) differently in individuals with spinal cord injury (SCI) at/above the 6th thoracic vertebra (T6) and below T6. Methods: We conducted a cross-sectional study, analyzed by univariate and multivariate regression models. Between- and within-group differences were examined during (a) ACE only, (b) ACE combined with PLC (ACE-PLC), and (c) ACE combined with functional electrical stimulation cycling (FES hybrid)...
2018: Topics in Spinal Cord Injury Rehabilitation
https://www.readbyqxmd.com/read/29422841/detecting-pilot-s-engagement-using-fnirs-connectivity-features-in-an-automated-vs-manual-landing-scenario
#8
Kevin J Verdière, Raphaëlle N Roy, Frédéric Dehais
Monitoring pilot's mental states is a relevant approach to mitigate human error and enhance human machine interaction. A promising brain imaging technique to perform such a continuous measure of human mental state under ecological settings is Functional Near-InfraRed Spectroscopy (fNIRS). However, to our knowledge no study has yet assessed the potential of fNIRS connectivity metrics as long as passive Brain Computer Interfaces (BCI) are concerned. Therefore, we designed an experimental scenario in a realistic simulator in which 12 pilots had to perform landings under two contrasted levels of engagement (manual vs...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29411431/stable-and-efficient-organo-metal-halide-hybrid-perovskite-solar-cells-via-%C3%AF-conjugated-lewis-base-polymer-induced-trap-passivation-and-charge-extraction
#9
Ping-Li Qin, Guang Yang, Zhi-Wei Ren, Sin Hang Cheung, Shu Kong So, Li Chen, Jianhua Hao, Jianhui Hou, Gang Li
High-quality pinhole-free perovskite film with optimal crystalline morphology is critical for achieving high-efficiency and high-stability perovskite solar cells (PSCs). In this study, a p-type π-conjugated polymer poly[(2,6-(4,8-bis(5-(2-ethylhexyl) thiophen-2-yl)-benzo[1,2-b:4,5-b'] dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl) benzo[1',2'-c:4',5'-c'] dithiophene-4,8-dione))] (PBDB-T) is introduced into chlorobenzene to form a facile and effective template-agent during the anti-solvent process of perovskite film formation...
February 7, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29400623/energy-expenditure-and-epoc-between-water-based-high-intensity-interval-training-and-moderate-intensity-continuous-training-sessions-in-healthy-women
#10
Gustavo Zaccaria Schaun, Stephanie Santana Pinto, Aline Borges de Carvalho Praia, Cristine Lima Alberton
The present study compared the energy expenditure (EE) during and after two water aerobics protocols, high-intensity interval training (HIIT) and moderate continuous training (CONT). A crossover randomized design was employed comprising 11 healthy young women. HIIT consisted of eight 20s bouts at 130% of the cadence associated with the maximal oxygen consumption (measured in the aquatic environment) with 10s passive rest. CONT corresponded to 30 min at a heart rate equivalent to 90-95% of the second ventilatory threshold...
February 5, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29400147/molecular-evaluation-of-microalgal-communities-in-full-scale-waste-stabilization-ponds
#11
Lucy E Eland, Russell J Davenport, Andre Bezerra Dos Santos, Cesar R Mota Filho
Waste Stabilization Ponds are widely used across the world as a passive wastewater treatment for domestic wastewaters, but are often treated as a 'black box' with little known about their ecology, especially their phototrophic communities. This study uses molecular methods and flow cytometry, including polymerase chain reaction (PCR), denaturing gradient gel electrophoresis (DGGE) and sequencing to assess and quantify the cyanobacterial and eukaryotic communities longitudinally throughout two systems, one treating domestic wastewater and the other mixed industrial/domestic wastewaters...
February 5, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29392750/nasal-obstruction-during-adolescence-induces-memory-learning-impairments-associated-with-bdnf-trkb-signaling-pathway-hypofunction-and-high-corticosterone-levels
#12
Takuya Ogawa, Hidemasa Okihara, Satoshi Kokai, Yasunori Abe, Uchima Koecklin Karin Harumi, Mio Makiguchi, Chiho Kato, Tadachika Yabushita, Makoto Michikawa, Takashi Ono
The hippocampus is an important brain region involved in memory and learning. Brain-derived neurotrophic factor (BDNF), tyrosine kinase receptor B (TrkB), and phospho-p44/p42 mitogen-activated protein kinase (MAPK) are known to contribute to hippocampal memory/learning. The present study aimed to clarify the effects of nasal obstruction during the growth period on memory/learning in an animal model, using combined behavioral, biochemical, and histological approaches. Male BALB/C mice underwent unilateral nasal obstruction (UNO) by cauterization at 8 days of age and were subjected to Y-maze and passive avoidance tests at 15 weeks of age...
February 2, 2018: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/29391713/evaluation-of-oxidative-stress-markers-in-oral-lichen-planus
#13
V R Rekha, S Sunil, R Rathy
Background: Lichen planus (LP) is a chronic, inflammatory disease that affects the skin, mucous membrane, scalp and nails that frequently involves the oral mucosa. Oxidative stress reflects an imbalance between the production of reactive oxygen species and the biological system's ability to readily detoxify the reactive intermediates or repair the resulting damage. It has been suggested that oxidative stress may play a role in the pathogenesis of LP. Aim and Objectives: To evaluate the role of oxidative parameters in the pathogenesis of oral LP, estimate the levels of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GPx) and uric acid (UA) in saliva of oral LP patients and to compare the levels of SOD, MDA, GP and UA in oral LP patients with healthy controls...
September 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/29381069/in-situ-ir-absorption-study-of-plasma-enhanced-atomic-layer-deposition-of-silicon-nitride
#14
Luis Fabián Peña, Eric C Mattson, Charith E Nanayakkara, Kolade A Oyekan, Anupama Mallikarjunan, Haripin Chandra, Manchao Xiao, Xinjian Lei, Ronald M Pearlstein, Agnes Derecskei-Kovacs, Yves J Chabal
Despite the success of plasma enhanced atomic layer deposition (PEALD) to deposit quality silicon nitride films, a fundamental understanding of the growth mechanism has been difficult to obtain due to a lack of in-situ characterization to probe the surface reactions non-invasively and the complexity of reactions induced/enhanced by the plasma. These challenges have hindered the direct observation of intermediate species formed during reactions. We address this challenge by examining the interaction of Ar plasma using atomically flat, monohydride-terminated Si(111) as a well-defined model surface and focusing on the initial PEALD with aminosilanes...
January 30, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29371223/broad-spectrum-physical-fitness-benefits-of-recreational-football-a-systematic-review-and-meta-analysis
#15
REVIEW
Zoran Milanović, Saša Pantelić, Nedim Čović, Goran Sporiš, Magni Mohr, Peter Krustrup
BACKGROUND: A previous meta-analysis showed that maximal oxygen uptake increased by 3.51 mL/kg/min (95% CI 3.07 to 4.15) during a recreational football programme of 3-6 months in comparison with continuous moderate-intensity running, strength training or a passive control group. In addition, narrative reviews have demonstrated beneficial effects of recreational football on physical fitness and health status. OBJECTIVE: The purpose of this systematic review and meta-analysis was to evaluate the magnitude of effects of recreational football on blood pressure, body composition, lipid profile and muscular fitness with reference to age, gender and health status...
January 25, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29365264/deterministic-nanopatterning-of-diamond-using-electron-beams
#16
James Bishop, Marco Fronzi, Christopher Elbadawi, Vikram Nikam, Joshua Pritchard, Johannes E Fröch, Ngoc My Hanh Duong, Michael J Ford, Igor Aharonovich, Charlene J Lobo, Milos Toth
Diamond is an ideal material for a broad range of cur- rent and emerging applications in tribology, quantum photonics, high power electronics and sensing. However, top-down processing is very challenging due to its extreme chemical and physical proper- ties. Gas-mediated electron beam induced etching (EBIE) has re- cently emerged as a minimally-invasive, facile means to dry etch and pattern diamond at the nano-scale using oxidizing precursor gases such as O2 and H2O. Here we explain the roles of oxygen and hydrogen in the etch process and show that oxygen gives rise to rapid, isotropic etching, whilst the addition of hydrogen gives rise to anisotropic etching and the formation of topographic surface pat- terns...
January 24, 2018: ACS Nano
https://www.readbyqxmd.com/read/29361296/peri-operative-chest-physiotherapy-for-paediatric-cardiac-patients-a-systematic-review-and-meta-analysis
#17
REVIEW
A Beningfield, A Jones
BACKGROUND: Chest physiotherapy (CPT) is implemented before and after congenital heart disease (CHD) surgery in paediatrics to prevent and treat postoperative pulmonary complications (PPC). Currently, there are no systematic reviews or meta-analyses on the efficacy of CPT in this population. OBJECTIVE: To conduct a systematic review and meta-analysis to determine whether peri-operative CPT is safe and effective for paediatric patients with CHD. DATA SOURCES: A literature search was conducted on PEDro, MEDLINE, CINAHL, Informit, The Cochrane Library and Scopus in March and April 2016...
December 5, 2017: Physiotherapy
https://www.readbyqxmd.com/read/29356166/different-responses-of-the-right-superior-temporal-sulcus-to-visual-movement-feedback-during-self-versus-externally-generated-hand-movements
#18
Jakub Limanowski, Pietro Sarasso, Felix Blankenburg
An important implication of several recent accounts of motor control is that sensory feedback from self-generated movements is relatively attenuated based on predictions issued by the agent's motor system. Such a relative attenuation of sensory information during actions has already been demonstrated in the somatosensory domain. Here, we used functional magnetic resonance imaging (fMRI) and a virtual reality-based setup to investigate a potential attenuation of brain responses to realistic visual movement feedback during active vs...
January 22, 2018: European Journal of Neuroscience
https://www.readbyqxmd.com/read/29339659/fc%C3%AE-r-ros-ck2%C3%AE-is-the-key-inducer-of-nf-%C3%AE%C2%BAb-activation-in-a-murine-model-of-asthma
#19
June-Mo Kim, Hae-Kyoung Kim, Yoo-Na Im, Yun-Soo Bae, Suhn-Young Im, Hern-Ku Lee
BACKGROUND: The transcription factor nuclear factor (NF)-κB plays a pivotal role in the development of allergic airway inflammation. However, the mechanism of NF-κB activation in asthma remains to be elucidated. METHODS: CK2α activation was assessed by CK2α phosphorylation and protein expression. Airway levels of histamine and cytokines were determined by ELISA. We used 2 (active and passive) forms of allergic pulmonary inflammation models. In the active form, the animals were immunized with ovalbumin (OVA) intraperitoneally, followed by an airway challenge with OVA...
January 17, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29324474/active-and-inactive-leg-hemodynamics-during-sequential-single-leg-interval-cycling
#20
Nicole Gordon, Chris R Abbiss, Mohammed Ihsan, Andrew J Maiorana, Jeremiah J Peiffer
INTRODUCTION: Leg order during sequential single-leg cycling (i.e. exercising both legs independently within a single session) may affect local muscular responses potentially influencing adaptations. This study examined the cardiovascular and skeletal muscle hemodynamic responses during double-leg and sequential single-leg cycling. METHODS: Ten young healthy adults (28 ± 6 y) completed six 1-min double-leg intervals interspersed with one minute of passive recovery and, on a separate occasion, 12 (six with one leg followed by six with the other leg) 1-min single-leg intervals interspersed with one minute of passive recovery...
January 11, 2018: Medicine and Science in Sports and Exercise
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