Health status and lifestyle factors as predictors of depression in middle-aged and elderly Japanese adults: a seven-year follow-up of the Komo-Ise cohort study

<p>Abstract</p> <p>Background</p> <p>Depression is a common mental disorder. Several studies suggest that lifestyle and health status are associated with depression. However, only a few large-scale longitudinal studies have been conducted on this topic.</p> <p>Methods</p> <p>The subjects were middle-aged and elderly Japanese adults between the ages of 40 and 69 years. A total of 9,650 respondents completed questionnaires for the baseline survey and participated in the second wave of the survey, which was conducted 7 years later. We excluded those who complained of depressive symptoms in the baseline survey and analyzed data for the remaining 9,201 individuals. In the second-wave survey, the DSM-12D was used to determine depression. We examined the risks associated with health status and lifestyle factors in the baseline survey using a logistic regression model.</p> <p>Results</p> <p>An age-adjusted analysis showed an increased risk of depression in those who had poor perceived health and chronic diseases in both sexes. In men, those who were physically inactive also had an increased risk of depression. In women, the analysis also showed an increased risk of depression those with a BMI of 25 or more, in those sleeping 9 hours a day or more and who were current smokers. A multivariate analysis showed that increased risks of depression still existed in men who had chronic diseases and who were physically inactive, and in women who had poor perceived health and who had a BMI of 25 or more.</p> <p>Conclusions</p> <p>These results suggest that lifestyle and health status are risk factors for depression. Having a chronic disease and physical inactivity were distinctive risk factors for depression in men. On the other hand, poor perceived health and a BMI of 25 or more were distinctive risk factors for depression in women. Preventive measures for depression must therefore take gender into account.</p

Fabrication of mesoporous silica KIT-6/polymer composite and its low thermal expansion property

Here we fabricate mesoporous silica KIT-6/epoxy polymer composite as low thermal expansion material. From the specific gravity of the composites, almost all the mesopores (around 90%) are successfully filled with the epoxy polymers. The thermal mobility of the confined polymer molecules inside the mesopores is restricted by the rigid silica frameworks. Therefore, the volume expansion degree of the composites is much lower than that of epoxy polymer. Through the comparative experimental using FSM-16-type mesoporous silica with a 2 dimensional (2D) hexagonal mesostructure, it is proved that KIT-6 system with a 3D bicontinuous gyroid mesostructure more effectively contributes low thermal expansion property

Strategi Pengembangan Pariwisata Pulau Pisang Kabupaten Pesisir Barat [Skripsi] / Refki Efrian Siger

Deskripsi fisik : v, 122 halaman : ilustrasi ; 28 cm. Lamp. (25 lembar)v, 122 halaman : ilustrasi ; 28 cm

Fabrication of epoxy composites with large-pore sized mesoporous silica and investigation of their thermal expansion

We fabricate epoxy composites with low thermal expansion by using mesoporous silica particles with a large pore diameter (around 10 nm) as inorganic fillers. From a simple calculation, almost all the mesopores are estimated to be completely filled with the epoxy polymer. The coefficient of linear thermal expansion (CTE) values of the obtained epoxy composites proportionally decrease with the increase of the mesoporous silica content

Blood Pressure, Urinary Sodium/Potassium Ratio and Body Mass Index in Rural and Urban Populations in West Java

206 men and women aged 20 years and over were studied in rural and urban populations in the Priangan Highlands, West Java, to assess the different effects of urinary sodium/potassium ratios and physique on blood pressure. Systolic and diastolic blood pressures increased with age, especially in the urban sample. The urinary sodium/potassium ratio was higher in the urban residents. Among individuals within the same group, no relationship was found between blood pressure and urinary sodium/potassium ratio, except in rural women. A significant correlation was found between blood pressure and the body mass index of individuals in the urban samples only

Fabrication of mesoporous silica/polymer composites through solvent evaporation process and investigation of their excellent low thermal expansion property

We fabricate mesoporous silica/epoxy polymer composites through a solvent evaporation process. The easy penetration of the epoxy polymers into mesopores is achieved by using a diluted polymer solution including a volatile organic solvent. After the complete solvent evaporation, around 90% of the mesopores are estimated to be filled with the epoxy polymer chains. Here we carefully investigate the thermal expansion behavior of the obtained mesoporous silica/polymer composites. Thermal mechanical analysis (TMA) charts revealed that coefficient of linear thermal expansion (CTE) gradually decreases, as the amount of the doped mesoporous silica increases. Compared with spherical silica particle without mesopores, mesoporous silica particles show a greater effect on lowering the CTE values. Interestingly, it is found that the CTE values are proportionally decreased with the decrease of the total amount of the polymers outside the mesopores. These data demonstrate that polymers embedded inside the mesopores become thermally stable, and do not greaty contribute to the thermal expansion behavior of the composites

Prototype of Low Thermal Expansion Materials: Fabrication of Mesoporous Silica/Polymer Composites with Densely Filled Polymer inside Mesopore Space

A prototype of novel low thermal expansion materials using mesoporous silica particles is demonstrated. Mesoporous silica/polymer composites with densely filled polymer inside the mesopore space are fabricated by mechanically mixing both organically modified mesoporous silica and epoxy polymer. The mesopores are easily penetrated by polymers as a result of the capillary force during the mechanical composite processing. Furthermore, we propose a new model of polymer mobility restriction using mesoporous silica with a large pore space. The robust inorganic frameworks covering the polymer effectively restrict the polymer mobility against thermal energy. As a result, the degree of total thermal expansion of the composites is drastically decreased. From the mass-normalized thermal mechanical analysis (TMA) charts of various composites with different amounts of mesoporous silica particles, it is observed that the coefficient of thermal expansion (CTE) values gradually increase with an increase of the polymer amount outside the mesopores. It is proven that the CTE values in the range over the glass-transition temperatures (T(g)) are perfectly proportional to the outside polymer amounts. Importantly, the Y-intercept of the relation equation obtained by a least-square method is the CTE value and is almost zero. This means that thermal expansion does not occur if no polymers are outside the mesopores. Through such a quantative discussion, we clarify that only the outside polymer affects the thermal expansion of the composites, that is, the embedded polymers inside the mesopores do not expand at all during the thermal treatment

Differences in lifestyle and perceived health in different occupations in a community, J Occup Health 40

Abstract: Differences in Lifestyle and Perceived Health in Different Occupations in a Community: Akiko OHTA, et al. Department of Public Health, Gunma University School of Medicine-It has been reported that morbidity and mortality vary according to occupation. To clarify factors which account for these differences, lifestyle, social network, job satisfaction and perceived health were measured in 1,165 men 40-59 years old residing in a rural village in Gunma, Japan. Comparisons were made of four occupational groups: agricultural and forestry workers, the self-employed, blue-collar workers, and white-collar workers. Agricultural and forestry workers had less obesity, good social networks with relatives and local community, lower job satisfaction, and less subjective physical symptoms and psychological complaints. The self-employed had higher job satisfaction but felt their jobs were hard. Bluecollar workers had lower job satisfaction, felt that their job was hard, and had the most subjective physical symptoms and psychological complaints. White-collar workers were the most obese, ate more Western-style foods, had more physical exercise, higher job satisfaction, did not feel the job was hard, had stronger marriage ties, and had fewer subjective physical symptoms and psychological complaints. These differences may account for differences in morbidity and mortality by occupation, and will provide useful information for health care planning in the respective occupational group. For example, improved health care will be needed for blue-collar workers who had the poorest perceived health in the community. (J Occup Health 1998; 40: 325-333