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Li Changjiang C Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, - - 2014
An efficient g-C3 N4 /BiVO4 heterojunction photocatalyst is constructed with BiVO4 networks decorated by discrete g-C3 N4 nano-islands with controllable coverage. The as-synthesized g-C3 N4 /BiVO4 photo-catalyst shows superior visible light photocatalytic activity. The enhanced photocatalytic activity can be ascribed to increased charge separation efficiency, separated redox reaction sites, fully ...
Clark Kenneth P KP Southern Methodist University, - - 2014
Running performance, energy requirements, and musculoskeletal stresses are directly related to the action-reaction forces between the limb and ground. For human runners, the force-time patterns from individual footfalls can vary considerably across speed, foot-strike, and footwear conditions. Here, we used four human footfalls with distinctly different vertical force-time waveform patterns ...
Bartolomei Vincent V Aix Marseille University, CNRS, FRE 3416, Case 29, 3 place Victor Hugo, 13331, Marseille Cedex 3, - - 2014
Gaseous nitrogen dioxide (NO2) represents an oxidant that is present in relatively high concentrations in various indoor settings. Remarkably increased NO2 levels up to 1.5 ppm are associated with homes using gas stoves. The heterogeneous reactions of NO2 with adsorbed water on surfaces lead to the generation of nitrous acid (HONO). ...
Yang Hui H Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China. - - 2014
Monitoring chemical reactions using tools of analytical chemistry is crucial for understanding the mechanisms of these reactions. In this study, leaf-like poly(p-phenylenediamine) (PpPD) microparticles were prepared with precisely tailored properties. The dark field microscopy protocol proved to be a powerful tool for studying the erosion of microparticles induced by Co(2+). ...
Zele Andrew J - - 2014
We studied the effect of rod-cone interactions on mesopic visual reaction time (RT). Rod and cone photoreceptor excitations were independently controlled using a four-primary photostimulator. It was observed that (1) lateral rod-cone interactions increase the cone-mediated RTs; (2) the rod-cone interactions are strongest when rod sensitivity is maximal in a dark surround, ...
Knez Igor I University of Gävle, Department of Social Work and Psychology, SE-801 76 Gävle, Sweden. Electronic address: - - 2014
This study renews the classical concept of subliminal perception (Peirce & Jastrow, 1884) by investigating the impact of subliminal flicker from fluorescent lighting on affect and cognitive performance. It was predicted that low compared to high frequency lighting (latter compared to former emits non-flickering light) would evoke larger changes in ...
Yamamoto Yasusi Y Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, - - 2014
The grana thylakoids of higher-plant chloroplasts are crowded with Photosystem II (PSII) and the associated light-harvesting complexes (LHCII). They constitute supercomplexes, and often form semi-crystalline arrays in the grana. The crowded condition of the grana may be necessary for efficient trapping of excitation energy by LHCII under weak light, but ...
Preska Steinberg Asher - - 2014
We study the growth dynamics of Turing patterns in the chlorine dioxide-iodine-malonic acid reaction-diffusion system in response to perturbations with visible light. We describe several mechanisms by which Turing patterns reappear after they are suppressed by illumination with a disc-shaped geometry. We observe that under specific conditions the patterns reorganize ...
Schultz Danielle M DM Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, - - 2014
Chemists have long aspired to synthesize molecules the way that plants do-using sunlight to facilitate the construction of complex molecular architectures. Nevertheless, the use of visible light in photochemical synthesis is fundamentally challenging because organic molecules tend not to interact with the wavelengths of visible light that are most strongly ...
Inoue Koichiro K a Graduate School of Education and Human Development , Nagoya University , Nagoya , - - 2014
Abstract We aimed to illustrate support leg dynamics during instep kicking to evaluate the role of the support leg action in performance. Twelve male soccer players performed maximal instep kicks. Their motions and ground reaction forces were recorded by a motion capture system and a force platform. Moments and angular ...
Chambon Nicolas N Aix-Marseille University, CNRS, ISM UMR 7287, 163 Avenue de Luminy, 13288 Marseille Cedex 09, France; Oxylane Research, Decathlon Campus, 4 Boulevard de Mons, 59665 Villeneuve d'Ascq, France. Electronic address: - - 2014
Many studies have highlighted differences in foot strike pattern comparing habitually shod runners who ran barefoot and with running shoes. Barefoot running results in a flatter foot landing and in a decreased vertical ground reaction force compared to shod running. The aim of this study was to investigate one possible ...
Vinyard David J - - 2014
The D1 protein of Photosystem II (PSII) provides most of the ligating amino acid residues for the Mn4CaO5 water-oxidizing complex (WOC), half of the reaction center cofactors, and is present as two isoforms in the cyanobacterium Synechococcus elongatus PCC 7942. These isoforms, D1:1 and D1:2, confer functional advantages for photosynthetic ...
Asadirad Amir Mahmoud - - 2014
A thermally remendable polymer was synthesized based on the Diels-Alder reaction between dithienylfuran and maleimide monomers to generate a photoresponsive diarylethene. UV and visible light (312 nm) 'gate' the reversibility of the Diels-Alder reaction and turns 'off' and 'on' the self-healing properties of the polymer, respectively. After exposure to UV ...
Wearing Scott C SC 1Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia. 2Centre of Excellence for Applied Sport Science Research, Queensland Academy of Sport, Brisbane, Australia 3University of Melbourne, Melbourne, Australia 4Faculty of Sports and Health Sciences, Technische Universität München, München, - - 2014
Footwear remains a prime candidate for the prevention and rehabilitation of Achilles tendinopathy as it is thought to decrease tension in the tendon through elevation of the heel. However, evidence for this effect is equivocal. This study used an acoustic transmission technique to investigate the effect of running shoes on ...
Ertelt T T Department of Motion Science Institute of Sport Science FSU, Jena, Germany - - - 2014
Background: Hopping dependent on speed causes different characteristics of ground reaction force pattern. Strongly set training-specific stimuli equally induce a corresponding characteristic of the force shape that is widely independent of hopping frequency. Thus it could be shown that 'jumpers' still generate a single modal force pattern with slow frequencies. ...
Zhang Xingguang X School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, QLD 4001, - - 2014
Light absorption efficiency of heterogeneous catalysts has restricted their photocatalytic capability for commercially important organic synthesis. Here, we report a way of harvesting visible light efficiently to boost zeolite catalysis by means of plasmonic gold nanoparticles (Au-NPs) supported on zeolites. Zeolites possess strong Brønsted acids and polarized electric fields created ...
Yoshinaga Natsuhiko N WPI, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, - - 2014
The time evolution equation of motion and shape are derived for a self-propelled droplet driven by a chemical reaction. The coupling between the chemical reaction and motion makes an inhomogeneous concentration distribution as well as a surrounding flow leading to the instability of a stationary state. The instability results in ...
Ruban Alexander V AV School of Biological and Chemical Sciences, Queen Mary University of London, , Mile End Road, London E1 4NS, - - 2014
The principle of quantifying the efficiency of protection of photosystem II (PSII) reaction centres against photoinhibition by non-photochemical energy dissipation (NPQ) has been recently introduced by Ruban & Murchie (2012 Biochim. Biophys. Acta 1817, 977-982 (doi:10.1016/j.bbabio.2012.03.026)). This is based upon the assessment of two key parameters: (i) the relationship between ...
Gutiérrez-Dávila Marcos M Department of Physical Education and Sport, University of Granada, Faculty of Sports Sciences , Granada, - - 2014
The aim of this study is to determine the effect that uncertainty, in relation to the probability of error, exerts on the reaction response and speed during the lunge in fencing. The participants were 18 regional-level fencers with over five years' experience. Force platforms under the feet recorded the horizontal ...
Kuo Sandy - - 2014
Solar urticaria is an uncommon condition characterized by erythema and whealing shortly after exposure to ultraviolet (UV) and/or visible light. We report a 25-year-old woman with an erythematous, edematous, pruritic reaction minutes after sun exposure while she was taking terbinafine for onychomycosis. Phototesting revealed a UVB-sensitive urticarial reaction, confirming the ...
Zahran Elsayed M EM Department of Chemistry, University of Miami , Coral Gables, Florida 33146, United - - 2014
Transitioning energy-intensive and environmentally intensive processes toward sustainable conditions is necessary in light of the current global condition. To this end, photocatalytic processes represent new approaches for H2 generation; however, their application toward tandem catalytic reactivity remains challenging. Here, we demonstrate that metal oxide materials decorated with noble metal nanoparticles ...
Bencina Metka M Materials Research Laboratory, University of Nova Gorica, Vipavska 13, 5000 Nova Gorica, Slovenia. - - 2013
Bi-Fe-Nb-O pyrochlore nanoparticles were synthesized by a facile coprecipitation reaction. They exhibit intense visible-light absorption due to a narrow band gap and high visible-light photocatalytic activity for degradation of methyl orange.
Hendershot Brad D BD Department of Rehabilitation, Walter Reed National Military Medical Center, Bethesda, MD 20889, USA; Center for Rehabilitation Sciences Research, Department of Physical Medicine and Rehabilitation, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA. Electronic address: - - 2013
Abnormal mechanics of locomotion following lower-extremity amputation are associated with increases in trunk motion, which in turn may alter loads at the low back due to changes in inertial and gravitational demands on the spine and surrounding trunk musculature. Over-ground gait data were retrospectively compiled from two groups walking at ...
Nourhani Amir A Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802, USA and Department of Chemical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, - - 2013
Nanomotors convert chemical energy into mechanical motion. For a given motor type, the underlying chemical reaction that enables motility is typically well known, but the detailed, quantitative mechanism by which this reaction breaks symmetry and converts chemical energy to mechanical motion is often less clear, since it is difficult experimentally ...
Farney Elliot P - - 2013
Irradiation of vinyl and aryl azides with visible light in the presence of Ru photocatalysts results in the formation of reactive nitrenes, which can undergo a variety of CN bond-forming reactions. The ability to use low-energy visible light instead of UV in the photochemical activation of azides avoids competitive photodecomposition ...
Simakov David S A - - 2013
We report on the experimental study of noise-induced oscillations in the photosensitive Ru(bpy)3(2+)-catalyzed Belousov-Zhabotinsky reaction in a continuously stirred tank reactor (CSTR). In the absence of deterministic oscillations and any external periodic forcing, oscillations appear when the system is perturbed by stochastic fluctuations in light irradiation with sufficiently high amplitude ...
Korbus Michael - - 2013
Abstract The control of enzymes by use of an external stimulus such as light enables the temporal and spatial regulation of defined chemical reactions in a highly precise manner. In this work we investigated and characterized the reversible photocontrol of a bacterial histone deacetylase-like amidohydrolase (HDAH) from Bordetella/Alcaligenes strain FB188 ...
Johanson Marie A - - 2013
Limited ankle joint dorsiflexion passive range of motion (PROM) has been associated with common chronic lower extremity conditions, and clinicians often instruct patients in stretching exercises to increase dorsiflexion. However, little is known about how subtalar joint (STJ) position affects dorsiflexion at the midfoot/forefoot versus ankle/rearfoot during gastrocnemius stretching. The ...
Soula Hédi - - 2013
Measurements of protein motion in living cells and membranes consistently report transient anomalous diffusion (subdiffusion) that converges back to a Brownian motion with reduced diffusion coefficient at long times after the anomalous diffusion regime. Therefore, slowed-down Brownian motion could be considered the macroscopic limit of transient anomalous diffusion. On the ...
Dilão Rui - - 2013
We show that the chemotactic movements of colonies of the starving amoeba Dictyostelium discoideum are driven by a force that depends on both the direction of propagation (directional sensing) of reaction-diffusion chemotactic waves and on the gradient of the concentration of the chemoattractant, solving the chemotactic wave paradox. It is ...
Falco Coral C Department of Physical Activity and Sport Sciences, Facultad de Ciencias de la Actividad Fisica y el Deporte, Universidad Católica de Valencia "San Vicente Mártir", Valencia, Spain. - - 2013
The aim of this study was to investigate the effects of target distance on temporal and impact force parameters that are important performance factors in taekwondo kicks. Forty-nine taekwondo athletes (age = 24.5 +/- 5.9 years; mass = 79.9 +/- 10.8 kg) were recruited: 13 male experts, 21 male novices, ...
Song Sang-Hun - - 2013
The primary (100 fs to 10 ns) and secondary (10 ns to 100 μs) photodynamics in the type II light-oxygen-voltage (LOV) domain from the blue light YtvA photoreceptor extracted from Bacillus subtilis were explored with transient absorption spectroscopy. The photodynamics of full-length YtvA were characterized after femtosecond 400 nm excitation ...
Amatatsu Yoshiaki - - 2013
Ab initio molecular orbital calculations have been performed to examine the topographical features around the conical intersections (CIXs) for the photoisomerization of 9-(2-cyclopenten-1-ylidene)-9H-fluorene (CPF). The present study is motivated by the computational findings of the topographical features in the CIX region of a fluorene-based light-driven molecular motor with constant rotation ...
Zou You-Quan - - 2013
Two birds with one stone: Recent advances in activating two reactants simultaneously using homogeneous visible-light photoredox catalysis have been described. The conceptually new catalytic mode will aid in the design of some green and sustainable reactions.
Vredenberg Wim - - 2013
This study reports on kinetics of the fluorescence decay in a suspension of the alga Scenedesmus quadricauda after actinic illumination. These are monitored as the variable fluorescence signal in the dark following light pulses of variable intensity and duration. The decay reflects the restoration of chlorophyll fluorescence quenching of the ...
Jain Tarang Kumar - - 2013
The purpose of this research study was to determine the dynamics of early human response from sudden ankle inversion (30° tilt). Changes in vertical ground reaction forces (GRFs) following trapdoor release in a group of healthy subjects were compared to those from the similar experiments using a chair with two ...
Fors Brett P - - 2013
A modular and general method based on a photomediated ATRA reaction for the spatially controlled functionalization of surfaces with visible light is reported. The ability to control reactivity with light intensity combined with the orthogonality of ATRA chemistry allows well-defined chemically differentiated monolayers and complex nonlinear chemical concentration gradients to ...
Goss Donald Lee - - 2013
Study Design Observational. Objectives To compare lower extremity negative joint work and vertical ground reaction force loading rates in rearfoot-striking (RS) and Chi runners. Background Alternative running styles such as Chi running have become a popular alternative to RS running. Proponents assert that this running style reduces knee joint loading ...
Branchini Bruce R - - 2013
The marine annelid Chaetopterus variopedatus produces bioluminescence by an unknown and potentially novel mechanism. We have advanced the study of this fascinating phenomenon, which has not been investigated for nearly 60 years after initial studies were first reported for this species. Here, we show that the luminous slime produced by ...
Nagao Raphael - - 2013
We investigate the sensitivity of Turing patterns in the chlorine dioxide-iodine-malonic acid reaction to illumination by strong white light. Intense illumination results in an increase of [I-], in contrast to previous studies, which found only decreased [I-] for weak and intermediate intensities of illumination. We propose an expanded mechanism to ...
Van Ooteghem K - - 2013
Rapid reach-to-grasp (RTG) reactions are important for balance recovery. Despite the benefit of having hands free to regain balance, people do not always release a handheld object. We investigated whether reluctance to release is related to central nervous system (CNS) processing delays that occur when the initial reaction is to ...
Reed Lloyd F - - 2013
Despite the emerging use of treadmills integrated with pressure platforms as outcome tools in both clinical and research settings, published evidence regarding the measurement properties of these new systems is limited. This study evaluated the within-- and between--day repeatability of spatial, temporal and vertical ground reaction force parameters measured by ...
Liu Guoliang - - 2013
An anti-galvanic replacement reaction (AGRR) of copper(ii) ions reduced by ultra-small ssDNA-templated silver nanoclusters forming Ag-Cu alloy nanoparticles was observed. The reaction is against the classic galvanic theory and was monitored sensitively by the light-scattering technique.
Liu C Tony CT Department of Chemistry, Pennsylvania State University, University Park, PA 16802, - - 2013
Temporal correlations between protein motions and enzymatic reactions are often interpreted as evidence for catalytically important motions. Using dihydrofolate reductase as a model system, we show that there are many protein motions that temporally overlapped with the chemical reaction, and yet they do not exhibit the same kinetic behaviors (KIE ...
Lu Xingjie - - 2013
A photosensitive self-oscillating gel that incorporates the Belousov-Zhabotinsky reaction can undergo rhythmic mechanical oscillations. We exploit the dependence of the oscillation frequency on light intensity to generate both photophobic and phototropic movement of the gel under differential illumination. Our findings may be used in designing intelligent sensors that can execute ...
Estevan Isaac - - 2013
Abstract In taekwondo, the stance position can potentially affect kick performance. The aim of this study was to analyse mechanical variables in the roundhouse kick in taekwondo according to three stance positions (0°, 45°, 90°). Nine experienced taekwondo athletes performed consecutive kicking trials in a random order according to these ...
Schofield Jonathon - - 2013
Sit-to-stand transfer is a common prerequisite for many daily tasks. Literature, often assumes symmetric behavior across the left and right side. Although this assumption of bilateral symmetry is prominent, few studies have validated this supposition. This pilot study uniquely quantifies peak joint moments and ground reaction forces (GRFs), using a ...
Yamamoto Daigo - - 2013
Most of the current studies on nano∕microscale motors to generate regular motion have adapted the strategy to fabricate a composite with different materials. In this paper, we report that a simple object solely made of platinum generates regular motion driven by a catalytic chemical reaction with hydrogen peroxide. Depending on ...
Kennedy Deanna M - - 2013
An experiment was designed to determine whether the activation of a muscle group (flexors or extensors) used to produce an ongoing movement of one limb influenced the reaction time and associated initiation of elbow flexion or extension movements of the contralateral limb. Right-handed participants in the bimanual groups were asked ...
Andrada Emanuel - - 2013
Increasing insight into neuro-mechanical control strategies during perturbed locomotion is gained. In contrast, more general analyses on simple model (template) related parameters during avian terrestrial locomotion are still rare. Quails kinematic data obtained using X-ray videography combined with ground reaction force measurements were used as a basis to investigate how ...
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