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Gender differences in the French Caribbean nursing homes
Coarse-grained fundamental forms for characterizing isometries of trapezoid-based origami metamaterials
IoT-driven smart assistive communication system for the hearing impaired with hybrid deep learning models for sign language recognition
LUC7 proteins define two major classes of 5′ splice sites in animals and plants
Research on high-precision localization method for transport robots in industrial environments based on Improved AMCL and QR code assistance
Activity-based sensing reveals elevated labile copper promotes liver aging via hepatic ALDH1A1 depletion
Intelligent anti-jamming decision algorithm for wireless communication under limited channel state information conditions
Optineurin-facilitated axonal mitochondria delivery promotes neuroprotection and axon regeneration
Cell cycle checkpoint factor p15Ink4b is a novel regulator of osteoclast differentiation
Anthropogenic nutrient inputs cause excessive algal growth for nearly half the world’s population
Abstract Reference conditions pertain to conditions without anthropogenic influence and serve to gauge the degree of river pollution and identify the best attainable water quality. Here we show estimates of the global human footprint of nitrogen and phosphorus concentrations and potential for related nuisance or harmful algal growth in rivers. We use statistical models based on 1.2 million stream nutrient measurements (from 2005 to 2013) and find global human enrichment of river total nitrogen and total phosphorus is 35% and 14% respectively. The greatest enrichment is in Europe (86 and 30% respectively) and the least in Oceania (9 and 2% respectively). The levels of enrichment translated into an almost doubling of the catchment areas with rivers predicted to have anthropogenically elevated levels of potentially harmful or nuisance algae, affecting ~40% of the world’s population. Focusing management on the difference between current and reference conditions can help protect good water quality while avoiding unrealistic goals where nitrogen and phosphorus are naturally high.
Etiology and risk factors of hemorrhagic abomasitis in goat kids
Structural insights into S-lignin O-demethylation via a rare class of heme peroxygenase enzymes
Side dominance and eye patches obscuring half of the visual field do not affect walking kinematics
Abstract Vision plays a fundamental role in the control of human locomotion, including walking gait. Given that side-dominance is associated with differences in motor control, the present study aimed to determine if patches obscuring half of the visual field affect left- and right-side dominant individuals’ gait kinematics and accompanying leg muscle activation differently. Healthy right- (n = 15, age = 28.2 ± 5.5 years) and left-side (n = 9, age = 27.9 ± 5.8 years) dominant participants performed 10 min of walking trials on a treadmill at a self-selected speed with 5 min of rest between three randomized trials, i.e., wearing clear glasses or glasses with left-or right half-field eye patching. In addition to a set of spatiotemporal and kinematic gait parameters, the average activity during the separated gait cycle phases, and the start and end of muscle activation in % of the gait cycle were calculated from five muscles in three muscle groups. Our results indicate that gait kinematics of left- and right-side dominant participants were similar both in their dominant and non-dominant legs, regardless of half-field eye patching condition. On the other hand, inter-group differences were found in selected kinematic variables. For instance, in addition to larger but less variable step width, our results suggest larger ankle and knee ROM in right- vs. left-sided participants. Furthermore, medial gastrocnemius and biceps femoris muscle activation showed selected differences at certain phases of the gait cycle between participants’ dominant and non-dominant legs. However, it was also unaffected by the half-field eye patching condition. Moreover, the endpoint of medial gastrocnemius activation was affected by side-dominance, i.e., its activation ended earlier in the non-dominant leg of right- as compared to left-side dominant participants. Our results suggest no major differences in walking gait kinematics and accompanying muscle activation between half-field eye patching conditions in healthy adults; nevertheless, side-dominance may affect biomechanical and neuromuscular control strategies during walking gait.
Zika virus NS1 drives tunneling nanotube formation for mitochondrial transfer and stealth transmission in trophoblasts
Assessing the impact of artificial snowmaking on Dagu Glacier variation: a case study from a tourism glacier
Current induced electromechanical strain in thin antipolar Ag2Se semiconductor
Abstract Electromechanical coupling permits energy conversion between electrical and elastic forms, with wide applications1,2. This conversion is usually observed in dielectric materials as piezoelectricity and electrostriction3–7. Electromechanical coupling response has also been observed in semiconductors8, however, the mechanism in semiconductors with a small bandgap remains contentious. Here we present a breakthrough discovery of a giant electromechanical strain triggered by the electric current in thin antipolar Ag2Se semiconductor. This phenomenon is made possible by the alteration of dipoles at a low current density (step I), followed by a phase transition under a moderate current density (step II), leading to a local strain of 6.7% measured by in-situ transmission electron microscopy. Our finding demonstrates that electric current has both thermal and athermal effect (e.g. alteration of dipoles and interaction of dipole vortices with the electric current). This strain allows for the concurrent control of electroelastic deformation and electric conductivity.