1998년과 2007년 사이 12∼13세 남녀 청소년의 체격, 골격성숙도, 체력 비교

송종국(Jong Kook Song),채서연(Seo Yeon Chae),채주희(Joo Hee Chae),김현배(Hyun Bae Kim),강효정(Hyo Jung Kang) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34

The purpose of the present investigation was to compare physique, skeletal maturation and physical fitness in Korean adolescents measured between 1998 and 2007. Subjects participated in the study were a total of 473 Korean adolescents aged 12 to 13 years. In 1998, 349 adolescents were selected from a middle school, located in Sungnam city and 124 middle school students aged 12-13, located in Yongin city were participated in 2007. All measurements were conducted by one of the reseachers (Jong-Kook Song) with two different group of investigators between 1998 and 2007. Anthropometric characteristics were body mass, body height, sitting height, circumferences taken at sites of upper arm, flexed upper arm, chest, waist, hip, thigh, and calf, bone breadth taken at the sites of humerus, and femur, skinfold thicknesses taken at the sites of triceps, subscapular, suprailiac, thigh and medial calf. Skeletal maturity was assessed by TW3 (Tanner et al., 2001). Maturity scores for Radius-Ulna-Short bones (RUS) and bone age were calculated. Physical fitness parameters included flamingo balance, sit and reach, grip strength, sit-ups, standing long jump, bent arm hang, 50m shuttle run and multi-stage shuttle run. All data were analyzed by SAS Enterprise 3.0. Means and standard deviations were calculated by descriptive statistics. Independent t-test was applied to compare dependent variables between measurements. The level of significance was set at p<0.05. Results of the study showed that male adolescents aged 12-13years in 2007 had significantly higher (p<0.0001) femur diameter than adolescents in 1998. Male adolescents in 2007 had higher (p<0.05) chest, waist and calf circumferences than those of adolescents in 1998. Although no difference were found for RUS and bone age in males adolescents between 1998 and 2007 female adolescents in 2007 were significantly delayed for their skeletal maturity level compared to female adolescents in 1998. For physical fitness parameters male adolescents aged 12 years in 2007 performed better for flamingo balance (p<0.01), and 50m shuttle run (p<0.05) than those of adolescents in 1998. However, stand long jump and bent arm hang were significantly decreased in male adolescents in 2007. Female adolescents aged 12-13 years in 2007 had significantly higher flamingo balance, but female adolescents aged 12 years in 2007 performed significantly less for standing long jump (p<0.0001), bent arm hang (p<0.001) and speed (p<0.05) than those of female adolescents in 1998. In conclusions this study suggest that chest circumference for both male and female adolescents in 2007 was significantly higher than those in 1998. Skeletal maturity for female adolescents in 2007 were significantly delayed compared to female adolescents in 1998. Further study is needed to evaluate consistent various.

Hepatic Cirrhosis Occurring in a Young Woodchuck(Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus(WHV)

Kyu-shik Jeong,정원일,Jae-yong Chung,Mi-young An,Chae-yong Jung,Gyoung-jae Lee,Jong-soo Kang,Byeong-cheol Kang,Young-heun Jee,Bruce H Williams,Young-oh Kwon,Da-hee Jeong 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2

Cirrhosis Occurring in a Young Woodchuck (Marmota monax) Due to Vertical Transmission of Woodchuck Hepatitis Virus (WHV)Da-hee Jeong, Won-il Jeong, Jae-yong Chung, Mi-young An, Chae-yong Jung, Gyoung-jae Lee1, Jong-soo Kang1, Byeong-cheol Kang2, Young-heun Jee3, Bruce H Williams4, Young-oh Kwon5 and Kyu-shik Jeong*College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Korea1Shinwon Scientific Co., LTD, Research Institute, Suwon, Korea2Clinical Research Institute, Seoul National University, Seoul 110-744, Korea3College of Veterinary Medicine, Jeju National University, Jeju 690-756, Korea

1995년도 대구지역 법의 부검 통계

채종민,이숙희,정민희,곽정식 大韓法醫學會 1996 대한법의학회지 Vol.20 No.1

This is a statistical observation by authors based on data of deaths brought to department of forensic medicine, Kyungpook National University School of Medicine for medicolegal autopsy by all of law enforcement agencies in Taegu area during the year of 1995. The report aims to reveal facts on various causes of death in Taegu area in attempt to analyse 205 cases statistically. The following are the summary of results ; 1. The total numbers of autopsy were 205 cases, of these 121 cases (58%) were males and 83 cases (40%) were females. 2. The violent deaths were 135 cases (66%) and the natural deaths were 63 cases (31%) and unknown cases were 7 (3%). 3. The percentage of autopsied cases with 30's age group was 28.2% (the most), 20's was 17.2%, 40's was 13.8%, 10's was 13.8%... in violent deaths. The percentage of autopsied cases with 30's age group was 31%, 40's was 20%, 20's was 20%, 50's was 15.5%...in natural deaths. 4. For the violent deaths, the percentage deaths due to injury was 52.9%, asphyxia was 29.8%, intoxication was 10.4% and abnormal temperature(hypothermia or fire) or electrocution was 6.7%. 5. For deaths due to injuries, the percentage of deaths due to blunt injury was 45.7%, sharp force injury was 29.5%, fall was 17.1%. and traffic accident was 7.1%. 6. For the natural deaths, 60 cases were recorded and the death due to the disese of the cardiocascular system was taking the most of the total percentage with 53%. 7. For deaths due to injuries, the percentage of accidental death was 57.3%, homicide was 22% and suicide was 14.7%. 8. 31 subjects (51.7%) of 128 violent deaths have positive blood alcohol concentrations (0.05% and above) , and 8.1% of natural deaths were associated with alcohol intake. 9. For deaths by medical dispute, 7 cases were recorded and deaths combined with operation were taking the most of the total percentage with 43%.

Fibrous Glass Board의 열전도도 측정

채희백,김종철 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.1

FIbrous glass board is widely used for the heat-insulation material. Thermal conductivity of these material is low. NIST prepared the cirtified reference material which is used for the comparison and verification of the apparatus for thermal conductivity measurements Guarded hot plate method is used to measure thermal conductivity and the results are compared with NIST data. Heat conduction path has three modes, such as through the fiber glass itself, air between the fiber and by radiation. The apparent thermal conductivity of fiber glass board 1450b is 3.5~4.2x10-2 W/m K in a temperature range from ambient to 345K. It's in agreement with NIST data within ±1.5%.

무릎골절 환자에 발생한 폐동맥의 안장 색전증 : An autopsy case report

정민희,채종민,곽정식 大韓法醫學會 1996 대한법의학회지 Vol.20 No.1

Pulmonary embolism is a complication principally in patients already suffering from some underlying disorder, such as cardiac disease or cancer, or who are immobilized for long periods. It appears to be particularly a disease of modern developed and industrialized countries. The incidence if believed to be much lower in African and Asian populations than in the Western world. Sudden death often ensues, owing largely to the blockage of blood flow through the lungs. Because of the rarity of the incidence, it seems worthwhile to present an example studied at autopsy. Pulmonary embolism was associated with sudden death in a hospitalized patient who was immobilized for long periods after fracture surgery. There was a large embolus from deep femoral vein lying at bifurcation of main pulmonary arteries, extending into left and right branches.

자궁경부종양에서 Cathepsin-D 표현의 의의

이춘희,김세진,전상식,이택후,조영래,채종민 경북대학교 병원 1997 경북대학교병원의학연구소논문집 Vol.1 No.1

Various clinical and histopathologic characteristics are currently used to obtain prognostic information about cervical carcinoma, but they do not predict the outcome for any individual patients. Thus, there is a need to identify additional tumor characteristics that are able to predict more accurately the outcome for an individual patient with cervical cancer. In this study, we explored the relationship between cathepsin-D expression and progression of the cervical neoplasia, the correlation between response to neoadjuvant chemotherapy and cathepsin-D expression, and we investigated if tumor cell cathepsin-D expression could serve as a prognostic factor in cervical carcinoma. Tumor tissues were obtained from 14 patients with cervical intraepithelial neoplasia and 52 patients with squamous cell carcinoma of the cervix. Cathepsin-S expression was identified by immunohistochemical methods using monoclonal antibody cathepsin-D (BioGene). Positive cathepsin-D immunoreaction in greater than 30% of carcinoma cells was scored as high expression. High cathepsin-D expression was seen in 15 of 52 invasive cancer but was absent in cervical intraepithelial neoplasia. It was shown that cathepsin-D expression was independent of the rumor grade, tumor size, lymph node involvement, depth of invasion, parametrial invasion, and response to chemotherapy. In disease free survival analysis by log-rank test, cathepsin-D expression was not significantly associated with survival. These results show that cathepsin-D expression is not a clinically useful adjunct to assessment of prognosis in invasive squamous cell carcinoma of the cervix.

소아에서의 Nd : YAG Laser를 이용한 치은착색제거술 YAG Laser in children

모경희,박헌동,박종휘,김효석,정현구,설재헌,이병채 조선대학교 구강생물학연구소 2003 口腔生物學硏究 Vol.27 No.1

Melanin is normally found in the skin of all people, and normal pigmentation of the intraoral tissues is a relative frequent finding. Gingival hyperpigmentation may cause esthetic problems and embarrassment, especially in patients with a gummy smile. Melanin pigmentation is related to etiologic factor such as hormon, systemic factor, drug, smoking and gingival inflamation. Depigmentation procedure can be Performed by gingival epithelium removing procedure, gingivectomy, free gingival graft, laser therapy, dry ice, Vitamin C and phenol-alcohol method. We could obtain favorable esthetic results by procedures such as Nd: YAG laser. The Nd:YAG laser was set at 4 watt, 50mJ, 80 pulse per second. The procedures were performed with contact mode in all pigmented areas by using a handpiece with a 320㎛ diameter fiber optic. Ablation of the gingival hyperpigmented gingiva appeared healthy, pink, and firm. No recurrence of hyperpigmentation had been found in 6 months of follow-up.

ZVS를 이용한 SEPP 고주파 공진 인버터의 특성해석

김동희,노채균,김종해,민병재,배상준 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.1

Applied the high frequency switching technology to the ower conversion circuits, the turn on and off loss of switch point out practically large the point at issue, in order to reduce switching loss, the switching method using tank resonant circuit be connected serial and parallel with load have been continuously investigated. This paper was described about principle and form of proposed circuit made use of soft switching technology ZVS(Zero Voltage Switching) and ZCS(Zero Current Switching) to reduce turn on and off loss at switching. Also, the analysis of the proposed circuit is described generally by using normalized parameter and basic operating principle and driving characteristics have been evaluated as to switching frequency and load parameter. Based on the charactristics value, a method of circuit design is proposed. In addition, Pspice's simulation and experimental waveforms are compared with theoretical ones. The experimental results shows that the proposed Inverter can be used practically such as power source system for induction cooker etc.

자기 소호형 소자를 사용한 D급 고주파 인버터의 특성 평가 및 설계에 관한 연구

노채균,김동희,김종해,배영호 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.2

This paper investigates and compares operating characteristics of the main power conversion circuit and extension of safety operating zone etc in case of use switching device of voltage-fed type high frequency Inverter with self-turn-off device to a case of using nature-commutated type devices. In addition, this paper induced operating characteristics of the main power conversion circuit by examination to normalized parameter. This paper propose that a base data of the main power conversion circuit of characteristics evaluation for frequency characteristics, output characteristics and load characteristics etc.

톨루엔을 포함한 유기용제의 직업적 폭로로 인한 신경내분비계 영향

이채언,이종태,정의화,손혜숙,문덕환,전진호,강정학,이창희,김휘동,김종한,정귀옥 大韓産業醫學會 1995 대한직업환경의학회지 Vol.7 No.2

Long term occupational exposure to solvent mixtures may cause adverse effects to the central nervous system with neurobehavioral symptoms. And some organic slovents have been suggested to cause impairment of tuberoinfundibular dopaminergic activity and neurochemical mechanisms controlling pituitary secretion. For the purpose of assessing neuroendocrine effects in occupational solvents exposure, hormonal study settings (shoes-manufacturing industry & fishing products industry) and compared with nonexposed controls(33 men, 85 women). Male workers exposed to solvent mixtures had significantly lower plasma level of follicle-stimulating hormone(FSH) than nonexposed male controls. While female workers exposed to solvent mixtures had significantly lower plasma levels of growth hormone(GH), and thyroid-stimulating hormone(TSH) than nonexposed female controls. The results of significant decrease in plasma concentrations of pituitary hormones(FSH, GH, and TSH) in workers exposed solvent mixtures indicate that occupational exposure to solvent mixtures may induce neuroendocrine effects through an effect on hypothalamic pituitary axis.