http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Al-Si 층교환 성장에서 ZnO 표면 거칠기가 Si 결정성에 미치는 영향
장원범,최성국,정수훈,이정우,장지호,Kosuke HARA,Haruna WATANABE,Noritaka USAMI 한국물리학회 2013 새물리 Vol.63 No.11
We have investigated the effect of the surface roughness of the zinc-oxide (ZnO) layer on the growth of a by using the polycrystalline-Si (poly-Si) layer Al-induced layer-exchange process. We found that the growth rate, grain size, crystallized fraction and preferential orientation were closely related to the surface roughness of the underlying ZnO layer. As the ZnO surface became rougher, the growth rate, grain size, and crystallized fraction increased, and a preferential orientation in the (100) direction appeared as well. The poly-Si layer that formed on ZnO with a root-mean-square roughness of 2.4 nm revealed a fast growth time (40 minutes), a large grain size (20 μm) and a high crystallized fraction (51%) with a preferential (100) orientation. 고효율 박막 태양전지의 구현을 위해 ZnO (Zinc Oxide) 박막위에 Al-Si 층교환 성장방법 (layer exchange method)을 이용하여 다결정 실리콘 (poly-Si)을 성장하였다. 특히 본 연구에서는 ZnO의 표면 거칠기가 다결정 Si 결정성에 미치는 영향을 조사하였다. ZnO 표면 거칠기에 따른 다결정 Si의 결정립의 크기 (grain size), 정렬방향 변화를 성장 중 현미경 관찰, Field-emission scanning electron microscope (FE-SEM)측정과 Electron backscatter diffraction (EBSD)을 이용해 조사하였다. ZnO의 표면 거칠기가 증가 할 수록 결정화 속도와 결정립 크기가 증가하였으며, (100)배향이 관찰되었다. 결과적으로 표면 거칠기가 2.4 nm 인 ZnO 를 이용하여 20 μm 이상의 입자크기와 높은 결정화도를 가지며 51% 이상의 (100) 배향성을 갖는 다결정 Si 박막이 구현되어, 높은 효율을 갖는 다결정 Si 박막 태양전지의 성능 향상에 기여할 수 있는 가능성을 제시하였다.
Rehabilitation Nutrition and Exercise Therapy for Sarcopenia
Kakehi Shingo,Wakabayashi Hidetaka,Inuma Hayato,Inose Tomomi,Shioya Moeka,Aoyama Yohei,Hara Taiki,Uchimura Kosuke,Tomita Kazusa,Okamoto Mizuki,Yoshida Masato,Yokota Shohei,Suzuki Hayato 대한남성과학회 2022 The World Journal of Men's Health Vol.40 No.1
Sarcopenia is an age-related loss of skeletal muscle associated with adverse outcomes such as falls, fractures, disability, and increased mortality in older people and hospitalized patients. About half of older male nursing home residents have sarcopenia. The diagnostic criteria by the European Working Group on Sarcopenia in Older People (EWGSOP) and the Asian Working Group for Sarcopenia (AWGS) have led to increased interest in sarcopenia. Exercise and nutritional management are crucial for the prevention and treatment of sarcopenia. Nutritional therapy for sarcopenia that includes 20 g of whey protein and 800 IU of vitamin D twice a day improves lower limb strength. Exercise therapy for sarcopenia, such as resistance training and 6 months of home exercises, improves muscle strength and physical function. Combination therapy that includes both nutritional and exercise therapy improves gait speed and knee extension strength more than either exercise alone or nutrition therapy alone. Excessive bedrest and mismanagement of nutrition in medical facilities can lead to iatrogenic sarcopenia. Iatrogenic sarcopenia is sarcopenia caused by the activities of health care workers in health care facilities. Appropriate nutritional management and exercise programs through rehabilitation nutrition are important for prevention and treatment of iatrogenic sarcopenia. Nutritional and exercise therapy should be started very early after admission and adjusted to the level of inflammation and disease status. Repeated assessment, diagnosis, goal setting, interventions, and monitoring using the rehabilitation nutrition care process is important to maximize treatment effectiveness and improve patients’ functional recovery and quality of life.