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Differences in kinematics, kinetics, and muscle activity between underwater dolphin kicking and flutter kicking: multiple approaches using three-dimensional motion analysis, electromyography, and hydrodynamic simulation.
Sports Biomech
January 2025
Institute of Health and Sport Sciences, University of Tsukuba, Tsukuba, Japan.
It is well-known among swimmers and coaches that the swimming speed of the underwater dolphin kick (UDK) is higher than that of the underwater flutter kick (UFK). This study aimed to clarify the differences in swimming performance between the two kicking styles in terms of kinematics, kinetics and muscle activity. Eight male swimmers performed UDK and UFK in a water flume at same effort levels.
View Article and Find Full Text PDFGas-phase and water-mediated mechanisms for the OCS + OH reaction.
Phys Chem Chem Phys
January 2025
Departamento de Físico-Química, Instituto de Química - Universidade Federal da Bahia, Rua Barão de Jeremoabo, 147, Salvador, Bahia, 40170-115, Brazil.
We report a computational study of the gas-phase and water-mediated mechanisms for the oxidation of carbonyl sulfide (OCS) by the hydroxyl radical. To achieve reliable results, we employ a dual-level strategy within interpolated single-point energies (VTST-ISPE) at the CCSD(T)/aug-cc-pVTZ//M06-2X/aug-cc-pVTZ level of theory. In the gas-phase mechanism, we have determined the rate constants by kinetic Monte Carlo simulation in the interval of temperatures of 250-550 K.
View Article and Find Full Text PDFKinetic evaluation for Cs desorption from riverine particles in seawater, and exploration of sorbent agents for fixation of the desorbed fraction.
J Environ Radioact
January 2025
Institute of Environmental Radioactivity, Fukushima University, Fukushima, Fukushima, 960-1296, Japan.
In this study, we evaluated 1) the potential ability of sorbents to adsorb Cs desorbed from contaminated riverine particles that had been introduced into seawater, and 2) the rates of desorption of Cs from weak and strong sorption sites. We performed particle-seawater desorption experiments to simulate the mixing of riverine particles with seawater and used a kinetic model to simulate results. We tested two sorbent agents: beach sand collected from less contaminated coast and zeolite.
View Article and Find Full Text PDFSynthetic phenolic antioxidant contamination in farmland soils induced by mulching films: Distribution and transformation pathways.
J Hazard Mater
January 2025
MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China.
The occurrence and distribution of synthetic phenolic antioxidants (SPAs) originating from mulch film in farmland soils, along with their transformation characteristics and pathways, remain largely unknown. This study is the first to investigate nineteen SPAs and four transformation products (TPs) in farmland soils across China. In film-mulching soils, concentrations of SPAs (median, range: 83.
View Article and Find Full Text PDFPopulation pharmacokinetics and pulmonary modeling of eravacycline and the determination of microbiological breakpoint and cutoff of PK/PD.
Antimicrob Agents Chemother
January 2025
Department of Clinical Pharmacy and Pharmacy Administration, School of Pharmacy, Fudan University, Shanghai, China.
Eravacycline is a broad-spectrum fluorocycline currently approved for complicated intra-abdominal infections (cIAIs). In lung-infection models, it is effective against methicillin-resistant (MRSA) and tetracycline-resistant MRSA. As such, we aimed to develop a population pharmacokinetic/pharmacodynamic (PK/PD) model to evaluate eravacycline's pulmonary distribution and kinetics.
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