Weak Solutions for a Diffuse Interface Model for Two-Phase Flows of Incompressible Fluids with Different Densities and Nonlocal Free Energies

We consider a diffuse interface model for the flow of two viscous incompressible Newtonian fluids with different densities in a bounded domain in two and three space dimensions and prove existence of weak solutions for it. In contrast to earlier contributions, we study a model with a singular nonlocal free energy, which controls the H-alpha/2-norm of the volume fraction. We show existence of weak solutions for large times with the aid of an implicit time discretization

Magnetotransport Study of the Canted Antiferromagnetic Phase in Bilayer ν=2\nu=2 Quantum Hall State

Magnetotransport properties are investigated in the bilayer quantum Hall state at the total filling factor $\nu=2$. We measured the activation energy elaborately as a function of the total electron density and the density difference between the two layers. Our experimental data demonstrate clearly the emergence of the canted antiferromagnetic (CAF) phase between the ferromagnetic phase and the spin-singlet phase. The stability of the CAF phase is discussed by the comparison between experimental results and theoretical calculations using a Hartree-Fock approximation and an exact diagonalization study. The data reveal also an intrinsic structure of the CAF phase divided into two regions according to the dominancy between the intralayer and interlayer correlations.Comment: 6 pages, 7 figure

Comparison of the Effects of Two Types of Stretching Warm Ups for Rehabilitation

This pilot study compares the effects of static therapeutic trunk stretching using an unstable flex chair, a stretching bench and a stretching stick on physical fitness with those of a general Japanese style of static stretching. The participants underwent physical fitness tests. Before and after warming up using a general Japanese style of stretching and trunk treatment stretching. Twenty-three healthy college students (age, 20.7 ± 1.2 years; height, 165.3 ± 7.6 cm; weight, 59.0 ± 9.7 kg; BMI 21.4 ± 2.3) were enrolled in this study. The physical fitness test assesses grip strength, sit-ups, eyes-closed single-leg stance, sit-and-reach flexibility, six-minute walk, and ten-meter obstacle course. The participants performed vertical jump, forward standing flexion measured using the analog flexion meter, thoracolumbar extension, horizontal flexure, deep forward bow. These results suggest that trunk stretching improves flexibility, walking ability, endurance and explosive power more effectively than the general Japanese style of stretching. Three static trunk stretches can improve flexibility, walking ability, endurance and explosive power. Trunk treatment stretching before physical activity might reduce the incidence of injury and improve the physical performance of individuals who participate in exercise, athletes and injured persons undergoing rehabilitation.ArticleBAOJ Medical and nursing.1(1):003(2015)journal articl

A case study of health education from Nagano prefecture in Japan: The relationship between health education and medical expenses

Background: Health promotion is not only the responsibility of the health sector, but extends from healthy lifestyles to wellbeing. We developed an active health program acquired ISO9001 (the International Organization for Standardization) in 2014. This health education program desired to Asian countries in cooperation with Asian Universities with the aim of increasing the health longevity of their populations.Methods: The authors implemented a 10-month health program from May 2010 to Feb 2011 in Minowa town, Nagano prefecture, Japan. Participants of a health education group (HEG) in Minowa town included 41 elderly (age: 63.4 ± 5.9) individuals; 6 residents of Nagano city (aged 59.4 ± 7.9) acted as a control group (CG).Results: The HEG participants showed significant improvement in weight, BMI, anthropometric measurements, systolic blood pressure, diastolic blood pressure, physical fitness factors including sit-ups, sit-and-reach flexibility, eyes-open single-leg stance, 10 m obstacle walk and 6 min walk, LDL, and brain function as reflected in response time and error rates for go/no-go tasks. In contrast, CG had no significant differences in any items before and after the health education program period. Systolic blood pressure, sit-and-reach flexibility and 10 m obstacle walk of HEG participants showed a significant improvement compared to those of the CG. Medical expenses of HEG participants were significantly reduced for the 1st year and 2nd year after the health education program compared to those of the non-participants.Conclusion: The systolic blood pressure, sit-and-reach flexibility and 10 m obstacle walk of HEG participants showed a significant improvement compared to those of the CG. Medical expenses of HEG participants were significantly reduced during health education and 1st and 2nd years after the health education program compared to those of non-participants.ArticleJournal of Community Medicine & Health Education.7(3):529(2017)journal articl

Moderate exercise improves cognitive performance and decreases cortical activation in the go/no-go task

Background: A lot of studies have reported that physical activity has a beneficial influence not only on physical and mental disorders but also on cognitive and brain function. Performance of a go/no-go task improves after exercise. However, few studies have compared neural activity in a go/no-go task performed before and after exercise to identify brain regions that may respond to exercise and underlie this result. Therefore, the purpose of this study was to examine the brain blood flow and compare the cortical activation pattern during a go/no-go task performed before and after exercise.Method: Fifteen healthy subjects performed a go/no-go task before and after exercise. Functional near-infrared spectroscopy (fNIRS) was used to measure oxygenated hemoglobin concentration at 44 locations over both hemispheres. The exercise was of moderate intensity, defined as 50% of peak oxygen uptake.Result: The reaction time on the go/no-go task was significantly faster after exercise than before. The oxygenated hemoglobin concentration quantified across the whole brain was lower after exercise, and this was the case for go trials and no-go trials. In go trials, the oxygenated hemoglobin concentration in dorsolateral prefrontal cortex and supplementary motor area were significantly lower after exercise.Conclusion: These results suggest that the dorsolateral prefrontal cortex and supplementary motor area had lower activity in go trials in the go/no-go task performed after exercise than in go trials in the go/no-go task performed before exercise.ArticleBAOJ Medical and nursing.1(1):002(2015)journal articl