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Yasunori Watanabe 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
Periphyton layer attaching to pebbles on riverfloor of the Tama River, Tokyo, was studied from its chemical and biological aspects. Development of periphyton was well both in oligotrophic upper reaches and heavily polluted lower reaches of the river. However, standing crop and, especially chlorophyll and phosphorus contents were much higher in lower reach stations. Sessile algae in periphton of upper reach appears to be more adapted to water flow and the attached layer seems to remain longer period than those in lower reaches. Periphyton growth was more rapid in the lower reach station and organic layer produced peeled away within a short period after reaching its maximum standing crop. This should be considered one of main cause of organic loading.
Association Between Body Mass Index and Functional Dyspepsia in Young Japanese People
Yasunori Yamamoto,Shinya Furukawa,Junichi Watanabe,Aki Kato,Katsunori Kusumoto,Eiji Takeshita,Yoshio Ikeda,Naofumi Yamamoto,Katsuhiko Kohara,Yuka Saeki,Yoichi Hiasa 대한소화기 기능성질환∙운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.2
Background/AimsEvidence regarding the association between body mass index (BMI) and functional dyspepsia (FD) in the Asian population is limited. Further, no study has evaluated this issue in young people in Asian and Western populations. Thus, we aim to investigate this issue among young Japanese people. MethodsThe study subjects comprised of 8923 Japanese university students. BMI was divided into 4 categories (quartiles) on the basis of the study subjects’ distribution (lowest, low, moderate, and high [reference]). The definition of lean, normal, overweight, and obese was BMI < 18.5 kg/m2, 18.5 ≤ BMI < 25 kg/m2 (reference), 25 kg/m2 ≤ BMI < 30 kg/m2, and 30 kg/m2 ≤ BMI, respectively. The definition of FD was based on the Rome III criteria. ResultsThe prevalence of FD was 1.9% in this cohort. The lowest BMI was independently associated with FD after adjustment (adjusted odds ratio [OR], 2.88; 95% confidence interval [CI], 1.46-3.67); P for trend = 0.001). The lowest BMI was independently associated with FD in women but not in men (OR, 2.94; 95% CI, 1.59-5.77; P for trend = 0.001). Leanness was independently associated with FD in total and in women but not in men (total: adjusted OR, 2.01; 95% CI, 1.40-2.86) and women (OR, 2.19; 95% CI, 1.35-3.45). However, interaction analysis showed no significant difference for sex. ConclusionsAmong young Japanese people, BMI may be independently inversely associated with FD. Leanness may be an independent associated factor for FD in the young Japanese women.
Yasunori Yamamoto,Shinya Furukawa,Junichi Watanabe,Aki Kato,Katsunori Kusumoto,Teruki Miyake,Eiji Takeshita,Yoshio Ikeda,Naofumi Yamamoto,Katsuhiko Kohara,Syuichi Saheki,Yuka Saeki,Yoichi Hiasa 대한소화기 기능성질환·운동학회 2022 Journal of Neurogastroenterology and Motility (JNM Vol.28 No.3
Background/AimsFunctional dyspepsia (FD) may be a common digestive disease worldwide and reduces the quality of life of patients. However, only a few studies have investigated the association between eating behavior and FD. The purpose of this cross-sectional study is to examine the association between eating behavior and prevalence of FD in a young Japanese cohort. MethodsIn this study, we enrolled 8923 Japanese university students. FD is diagnosed based on the Rome III criteria. Eating habits and frequency of meals were investigated using a self-administered questionnaire. ResultsThe FD subjects had a younger mean age, a lower body mass index, and a lower proportion of men compared to the non-FD subjects. An independent positive association between skipping breakfast and/or lunch and FD was found (adjusted ORs were 1.60 [95% CI, 1.10-2.32] for breakfast and 2.52 [95% CI, 1.04-5.18] for lunch). Skipping dinner, extra meals (snacks) or midnight snacks was not associated with FD. The prevalence of FD in subjects eating 1, 2, and 3 meals per day was 4.8%, 2.2%, and 1.7%, respectively. The frequency of meals was independently inversely associated with prevalence of FD (adjusted ORs were 1 per day: 2.72 [95% CI, 1.19-5.42], and 2 per day: 1.69 [95% CI, 1.16-2.43], P for trend = 0.001). ConclusionsIn the young Japanese people, the frequency of meals may be independently inversely associated with prevalence of FD. In particular, skipping breakfast and/or lunch was associated with the prevalence of FD.
Field Server Monitoring System for Construction of IT Farming and Agri-tourism
Yasunori Saito,Takanobu Suzuki,Kin-ichi Kobayashi,Katsuharu Sato,Masayuki Hirafuji,Tokihiro Fukatsu,Ryozo Ichimura,Ryoichi Yashiro,Setsuo Takeuchi,Kazuhiko Yuasa,Sumio Watanabe,Fumitoshi Kobayashi,Tak 제어로봇시스템학회 2006 제어로봇시스템학회 국제학술대회 논문집 Vol.2006 No.10
Simple Measurement System for Indoor Power flow Distributions using Voltmeters at Electrical Outlet
Nozaki, Yuhei,Mitani, Yasunori,Yaser, Qudaih,Watanabe, Masayuki 대한전기학회 2013 The Journal of International Council on Electrical Vol.3 No.4
In order to monitor and manage the electric power consumption and distribution in a building or a house dispersedly implemented digital power meters are utilized, while the meters are very costly due to the complicated numerical operation or due to the multi-functionality such as measurements of reactive power, power factor, integrating power and so on. Therefore a simple combination of current transformer (CT) and potential transformer (PT) with post processing of collected data is used for energy usage diagnosis process. However, as long as the power lines are usually behind the walls the CT installation is not easy. In this paper a set of voltmeters dispersedly installed at power outlets is proposed as a monitoring system for power distribution to each outlet. Experimental results show the advantage of the proposed scheme in the sense that it does not disturb the usage of electric appliances and that the system configuration is simple. The proposed system was applied to the monitoring system for avoiding overload conditions or power losses.
Dong-Sup Kim,Yasunori Watanabe 江原大學校 附設 環境硏究所 1992 環境硏究 Vol.9 No.-
The effect of UV-A (320-400nm) of diel changes and depth profiles of phytoplankton photosynthesis was studied at four temperate lakes. Photosynthetic oxygen production was determined by incubating lake water in situ in light and dark bottles under various weather conditions. Half of the light bottles were various weather conditions. Half of the light. bottles were wrapped with sheets of vinyl chloride film to remove light with wavelengths shorter than 400nm. The inhibition of photosynthesis due to UV-A was observed at around noon on both sunny and rainy days as well as during early morning and late afternoon. On sunny days when the surface waters of Lake Suwa and Senzoku Pond were dominated by dense Microcystis blooms, cumulative daily production rates estimated from the incubation of bottles from which UV-A had been excluded were about double the rates inhibition was detected at depths of 20cm in hypereutrophic lakes and 50cm in mesotrophic lakes. Analysis of the photosynthesis-irradiance relationship obtained with data from the present study indicates that the major cause of photoinhibition of phytoplankton photosynthesis was UV-A. UV-A was absorbed by lake water from 1.5 to 3.5 times higher than PAR. Extinction coefficient of UV-A in lake water showed a good correlation with chlorophyll a concentration.