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노윤희,박종진,이계산 한국운동역학회 2001 한국운동역학회지 Vol.10 No.2
This study is purpose to present the specification of gait such like step length, stride width, change of stride length, body-oriented static right-left ratio and average pressure & maximum pressure by the %fat when female middle school students are gait, subjects to female middle school students. To conduct this study, the change of step length, stride width, and stride length are comparative analyzed by using stick figures which collected through image analysis, and to be comparative analyzed body-oriented static right-left ratio and average pressure & maximum pressure by using DINATTO system Ver 2.5. The following results are shown like this. 1) The difference of step length, stride width, and stride length right-left ratio Among the step length, stride width, and stride length by the %fat has no significant difference in three groups. 2) The difference of body-oriented static right-left ratio by the %fat. Three groups have no significant difference in the body-oriented static right-left ratio by the %fat. 3) The difference of average pressure and maximum pressure by the %fat. Three groups have significant difference in the average pressure and maximum pressure by the %fat, the average pressure and maximum pressure are shown the highest in the above 30% groups.
류소연,윤혜은,김기순,박종,강명근,박계남 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.2
Objectives : This study was performed to investigate the drinking status and the related factors with problem drinking in some medical students. Methods : The study subjects were 345 premedical students (freshmen and sophomore) and medical students (sophomore) in a medical school who replied to the self-administered questionnaire survey during March 2002. The questionnaire was composed of general characteristics, drinking status, social value about drinking, health status, satisfaction of life and alcohol use disorders identification test (AUDIT) . Results : The experience rate of drinking was 88.8% in male and 88.3% in female and it was tended to increase with going up the grade. Prevalence of hazardous, dependence, harmful and problem drinking classified by AUDIT score criteria were 66.2%, 3.0%, 7.0% and 5.1% in male and 34.9%, 0.9%, 1.9%, 1.9% in female. In male, the statistically significant related factors to Al JDIT scores were grade, religion, maternal drinking status, social value about drinking, affectionate feelings of those around one and satisfaction of life. Only social value about drinking was statistically significant correlated factor with AUDIT scores in female. As a result of multiple regression analysis, the related factors with AUDIT scores were sex, maternal drinking status, satisfaction of life and social value a bout drinking. Conclusion : The experience rate of drinking in medical students was higher than that in other college students. Grade, family drinking history, negative psychological feelings, social value about drinking were risk factors to problem drinking.
Yun, Kwi-Dug,Yang, Yunzhi,Lim, Hyun-Pil,Oh, Gye-Jeong,Koh, Jeong-Tae,Bae, In-Ho,Kim, Jaehyung,Lee, Kwang-Min,Park, Sang-Won Elsevier 2010 Materials science & engineering. C, Materials for Vol.30 No.1
<P><B>Abstract</B></P><P>This study was to evaluate wettability, cell response, and osseointegration of nanotubular titanium (Ti) surface by anodic oxidation. Commercially pure Ti discs were treated by polishing, sandblasting, and anodizing. These surfaces were characterized by scanning electron microscopy and contact angle measurement. MC3T3-E1 osteoblast cell was used to evaluate cell response <I>in vitro</I>. The cell morphology, cell viability, and alkaline phosphatase (ALP) specific activity were assessed. The Ti implants of 2.0mm diameter and 5.0mm long treated by anodizing and sandblasting/anodizing were inserted into the tibia of rats. After 3weeks, the histology of the Ti–bone interface was examined. SEM observations showed that the anodizing and sandblasting/anodizing created the nanotubular surface and graded nanotubular-micro-roughened surfaces, respectively. The anodizing and sandblasting/anodizing significantly improved the hydrophilicity of Ti. The significant greatest cell spreading and ALP specific activity were observed on the graded nanotubular-micro-roughened surfaces treated by sandblasting/anodizing. The <I>in vivo</I> study shows that newly formed bone was intimately in contact with the nanotubular surfaces without adverse immune response. This study has suggested that the graded nanotubular-micro-roughened surface of Ti treated with sandblasting/anodizing is very promising in implantology due to improved hydrophilicity, favorable cell response, and excellent osseointegration.</P>
Gye-Jeong Oh,Kwi-Dug Yun,Kwang-Min Lee,Hyun-Pil Lim,Sang-Won Park 대한치과보철학회 2010 The Journal of Advanced Prosthodontics Vol.2 No.3
PURPOSE. The purpose of this study was to compare the linear sintering behavior of presintered zirconia blocks of various densities. The mechanical properties of the resulting sintered zirconia blocks were then analyzed. MATERIALS AND METHODS. Three experimental groups of dental zirconia blocks, with a different presintering density each, were designed in the present study. Kavo Everest(R). ZS blanks (Kavo, Biberach, Germany) were used as a control group. The experimental group blocks were fabricated from commercial yttria-stabilized tetragonal zirconia powder (KZ-3YF (SD) Type A, KCM. Corporation, Nagoya, Japan). The biaxial flexural strengths, microhardnesses, and microstructures of the sintered blocks were then investigated. The linear sintering shrinkages of blocks were calculated and compared. RESULTS. Despite their different presintered densities, the sintered blocks of the control and experimental groups showed similar mechanical properties. However, the sintered block had different linear sintering shrinkage rate depending on the density of the presintered block. As the density of the presintered block increased, the linear sintering shrinkage decreased. In the experimental blocks, the three sectioned pieces of each block showed the different linear shrinkage depending on the area. The tops of the experimental blocks showed the lowest linear sintering shrinkage, whereas the bottoms of the experimental blocks showed the highest linear sintering shrinkage. CONCLUSION. Within the limitations of this study, the density difference of the presintered zirconia block did not affect the mechanical properties of the sintered zirconia block, but affected the linear sintering shrinkage of the zirconia block.
A Prenatal Case of Paracentric Inversion of Chromosome 18, inv(18)(q21.1q22)
Gye-Hyeong An,Moon Young Kim,Min Hyoung Kim,Yun Young Kim,Kyu Hong Choi,Dong Wook Kwak,So Yeon Park,Bom Yi Lee,Ju Yeon Park,Hyun Mee Ryu 대한의학유전학회 2012 대한의학유전학회지 Vol.9 No.2
Paracentric inversion of chromosome 18 is a rare cytogenetic abnormality. The vast majority of paracentric inversions are harmless and the offspring of paracentric inversion carriers have only slightly elevated risks for unbalanced karyotypes. However, various clinical phenotypes are seen due to breakpoint variation or recombination. We report a prenatally detected case of familial paracentric inversion of chromosome 18, inv(18)(q21.1q22), with normal clinical features.