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Natural Course of Hepatitis C Infection in Japan
Yano, KoJi,Yatsuhashi, Hiroshi,Yano, Michitami 대한소화기학회 2003 대한소화기학회지 Vol.41 No.3
The natural course of chronic hepatitis C can be classified into several phases. These phases include persistent phase, asymptomatic phase, and active or aggressive phase. Chronic persistent hepatitis progresses very slowly, if any. On the other hand, chronic aggressive hepatitis frequently develops liver cirrhosis soon. The difference between these two probably depends on the host immune system that is related to age, rather than the duration of infection. Our longitudinal study revealed that chronic persistent hepatitis often transforms to active or aggressive hepatitis at around the age of 45. Chronic persistent hepatitis progresses very slowly, if any. On the other hand, chronic aggressive hepatitis frequently develops liver cirrhosis soon. The difference between these two probably depends on the host immune system that is related to age. The unknown factor(s) that are related to the host immune system changes around 45 years of age. Our longitudinal study revealed that chronic persistent hepatitis often transforms to aggressive hepatitis around the age of 45. Accordingly, aging is one of the most important factors that contribute to LC and HCC development.
Yano Yuichiro,Kanegae Hiroshi,Node Koichi,Mizuno Atsushi,Nishiyama Akira,Rakugi Hiromi,Itoh Hiroshi,Kitaoka Kaori,Kashihara Naoki,Ikeno Fumiaki,Tsuji Ichiro,Okada Kunio 한국역학회 2022 Epidemiology and Health Vol.44 No.-
OBJECTIVES: Using a dataset from a survey on national health and productivity management, we identified health and productivity factors associated with organizational profitability. METHODS: The Ministry of Economy, Trade and Industry conducted an annual survey on Health and Productivity Management between 2014 and 2021. We assessed the associations of organizational health and productivity management using survey questions collected in 2017 and 2018, and the rate of change in profits from 2017 and 2018 to 2020. We identified factors associated with organizational profitability using eXtreme Gradient Boosting, and calculated SHapley Additive exPlanation (SHAP) values for each factor. RESULTS: Among 1,593 companies (n= 4,359,834 employees), the mean age for employees at baseline was 40.3 years and the proportion of women was 25.8%. The confusion matrix for evaluating model performance had accuracy of 0.997, precision of 0.993, recall of 0.997; and area under the precision-recall curve of 0.999. The most important factors related to an increase in corporate profits were the percentage of current smokers (SHAP value 0.121), per-employee cost for health services (0.084) and medical services (0.050); the percentage of full-time employees working in sales departments (0.074), distribution or customer service departments (0.054); the percentage of employees who sleep well (0.055); and the percentage of employees who have a habit of regular exercise within a company (0.043). CONCLUSIONS: The lifestyle health risk factors of employees and organizations’ management systems were associated with organizational profitability. Lifestyle medicine professionals may demonstrate a significant return on investment by creating a healthier and more productive workforce.
“ON–OFF” switching of europium complex luminescence coupled with a ligand redox process
Yano, Masafumi,Matsuhira, Keisuke,Tatsumi, Masakazu,Kashiwagi, Yukiyasu,Nakamoto, Masami,Oyama, Munetaka,Ohkubo, Kei,Fukuzumi, Shunich,Misaki, Hitomi,Tsukube, Hiroshi The Royal Society of Chemistry 2012 Chemical communications Vol.48 No.34
<P>A triarylamine-functionalized terpyridine ligand formed a highly coordinated complex with europium tris(β-diketonate), which displayed reversible ‘‘ON–OFF’’ luminescence switching coupled with a ligand redox process of triarylamine/triarylaminium cations.</P> <P>Graphic Abstract</P><P>A triarylamine-functionalized terpyridine ligand formed a highly coordinated complex with europium tris(β-diketonate), which displayed reversible ‘‘ON–OFF’’ luminescence switching coupled with a ligand redox process of triarylamine/triarylaminium cations. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cc31078c'> </P>
Yano Yudai,Iwata Eiichiro,Sada Takuya,Ueno Yuki,Hyakuda Yoshinobu,Kawasaki Sachiko,Okuda Akinori,Shigematsu Hideki,Uematsu Kota,Yajima Hiroshi,Tanaka Yasuhito 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.6
Study Design: Retrospective cohort study.Purpose: We propose a method for screening for low bone mineral density (BMD) among perimenopausal and postmenopausal women using a self-reported questionnaire.Overview of Literature: Osteoporosis is a major health problem worldwide. However, it is not cost-effective to evaluate BMD in all patients. Although several tools for predicting osteoporosis have been established, they do not focus much on low BMD prior to the development of osteoporosis.Methods: We retrospectively reviewed the medical records of 198 women aged 40–70 years who underwent mass screening for osteoporosis at our hospital between 2016 and 2019. The BMD values and the following data were collected: age, body mass index, fracture history, lower back pain, height loss, kyphosis, history of fragility fracture, family history of vertebral or hip fracture, and menopause. The reliability of each data point for the young adult mean <80% was calculated using discriminant analysis. Variables with large weight coefficients were selected and scored. This scoring tool was examined, and a cutoff score for predicting the young adult mean <80% was determined.Results: Sixty-four participants (32.3%) had a young adult mean <80%. According to the weight coefficients, the following five variables were scored as follows: age ≥60 years 3 points, body mass index <22 kg/m2 3 points, lower back pain 1 point, height loss (cm) 1 point, and menopause 1 point. The area under the receiver operating characteristic curve was 0.738 (95% confidence interval, 0.669–0.807). At cutoff scores of ≥5 and <5, the sensitivity was 82.8%, with specificity of 52.0%.Conclusions: The scoring tool performed well for predicting young adult mean <80% among perimenopausal and postmenopausal women in Japan. This tool may be useful to screen for low BMD.
Research on The Virtual Space System Used for Learning of Autonomous Robots
Hirotsugu Yano,Hiroshi Douzono,Ryouhei Fujiwara 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Recently, the applications of the virtual space become more popular. In some cases, the experiments in real space require huge time and huge costs. For such cases, experiments in the virtual space are applied. We have developed virtual space system for learning of autonomous robot controlled with visual information in OpenGL space. The purpose of this study is to develop the more realistic virtual space which can compensate the difference between real space and virtual space. For this purpose, we introduced the texture mapping to the object in virtual space and the additional virtual sensors which can use for controlling the robot. We made some experiments of autonomous robots controlled by SOM-RL algorithm and examine the effectiveness of proposed system.
Hot Carrier Effect in Low-Temperature Poly-Si TFTs with Sputtered Gate SiO2 Films
Yukiharu Uraoka,Hiroshi Yano,Makoto Miyashita,Tadashi Serikawa,Takashi Fuyuki,Tomoaki Hatayama,Yuta Sugawara 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.4
We investigated the reliability of low-temperature poly-Si thin film transistor (TFT) by using Si films and gate oxides fabricated by using RF sputtering method. To evaluate the immunity against the hot carrier effect, we imposed DC and dynamic stress on the sputtered TFT. We found that reliability was higher than it was a conventional TFT. The sputtered TFT showed very little degradation. Observation by emission microscope was performed to analyze their strong immunity. In a conventional TFT, emission was observed only at the drain edge. However, in sputtered TFT, emission was observed not only at the drain edge but also at the source edge. We proposed a model explaining the emission in a sputtered TFT. To prove this model, we examined the emission in a SOI TFT. A similar emission mode supports our model. Sputtered TFTs are very promising for next generation.?