PHV年齡에서 본 體格 ·體力의 發育 ·發達 速度曲線에 관한 연구

朴哲浩,朴贊熙,朴俊東,朴相甲,辛尙根 東亞大學校附設스포츠科學硏究所 1992 스포츠科學硏究論文集 Vol.10 No.-

The purpose of this study was to examine the timing and sequence of growth and development velocity curves of some physique and physical fitness aligned on age at peak height velocity. The study design, the subjects, and the method used in cross-sectional investigation reported by Ministry of Physical Education and Youth of Korea(1989). According to the reported by Ministry of Physical Education and Youth, the subjects participated in goverment study were 7 through 50 over years of age who belonged to typical primary, junior and senior high school, college and adult, and about 550 males and 550 females in each age. Thus, the total sample size were 6,316 males and 6,316 females. Grand total was 12,632. For physique measured, 2 body linearity items ; body height and sitting height, 5 body bulk items ; body weight, chest girth and 3 site skinfold thickness items were selected. For physical fitness measured, 8 items such as grip strength, sit-ups, 10m shuttle run, standing long jump, 50m dash, long distance run, eyeclosed foot balance and trunk flexion were selected. Measurements were actually worked out in April through July, 1989. The mean and the standard deviation were computed for each itesm, each age, and each sex, respectively. The growth and development velocity magnitudes of some physique and physical fitness in this study were calculated by personal computer. The conclusion obtained as follows. 1. Ages at PHV occurred earlier about 3years than males on the average. 2. Maximal annual increments (PV) in body weight, chest girth and sitting height appeared to coincide with PHV in males, but, to about 1 and 2 years after PHV in females. 3. Two occurrence of peak velocity gained in the chest girth for males and 3 site skinfold for females. In contrast, peak velocity of triceps skinfold was not appeared in males. 4. Peak velocities of grip strength and trunk flexion occurred about 1 to 2 years after PHV in both sexes. Peak velocities of 50m dash and long distance run occurred about 1 to 2 years after PHV in males. 5. Peak velocities of sit-ups, standing long jump and eyeclosed foot balance occurred about 1 to 2 years before PHV in both sexes, respectively. 6. Peak velocity of 10m shuttle run was not occurred in both sexes, peak velocity of 50m dash was not occurred in females. 7. Generally, peak velocities of physique and physical fitness occurred earlier about 1 to 3 years in females than in males.

당뇨병환자에서 뇨증 Fibronectin농도의 증가에 관한 연구

한승범,조준승,손건영,서성문,박근용,조성래,박규영,박정모,이인규,여준기 啓明大學校 醫科大學 1994 계명의대학술지 Vol.13 No.4

Plasma fibronectin is an α₂-glyoprotein, which is produced by vascular endothelial cells. Raised level of plasma fibronectin has been observed in diabetic patients particularly in the presence of microvascular complications. However, no available data exist about urine level of this glycoprotein in diabetic patients. We measured urine fibronectin level by ELISA methods in 54 diabetic patients who have microvascular comlications or not. The following results were obtained. 1) Urine fibronectin level(㎍/g creatinine) in diabetic group(1740.0±678.0) is increased compaired with those in normal control group(471.0±59.0). but this results were not significantly different among two groups(P>0.05). 2) Urine fibronectin level(㎍/g creatinine) was significantly increased in patients with nephropathy (6188.0±3144.0) compared with those in normal control group(471.0±59.0) and patients without nephropathy(645.0±251.0)(P<0.001). 3) There were a significant correlation between BUN, creatinine, creatinine clearance, 24hr urine total protein and urine fibronectin level in diabetic patients. Our data suggest that urine fibronectin excretion level might be used as a sensitive guide for diabectic nephropathy.

수도관의 생물막 형성에 미치는 잔류염소와 파이프 재질의 영향

박세근,박재우,성권식,최성찬,김영관 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

This laboratory study examined the impact of free chlorine residual and pipe material on the formation of biofilm in drinking water distribution pipe surfaces. Result of heterotrophic plate counts(HPC) of the biofilm in the tap water- supplied reactor averaged 2.17×105CFU/cm2 on PVC and 2.43×105CFU/cm2 on STS 316, respectively. HPCs on the surface exposed to the tap water containing 0.2mg/L of free chlorinne residual averaged 4.24×104CFU/cm2 on PVC and 6.54×104CFU/cm2 on STS 316, respectively Average of HPC/Total direct counts in the tap water-supplied reactor ranged from 1.08%(PVC) to 1.26%(STS 316) and from 0.38%(PVC) to 0.65%(STS 316) in the reactor supplemented with disinfectant, resfectively. No correlation was observed between disinfectant addition and biofilm density. With regard to the biofilm formation, little difference existed between PVC and STS 316. Yellow and red pigmented bacteria were the dominant expressions in bulk fluid, whereas non-pigmented bacteria were found dominant in the biofilm. Pink/red pigmented bacteria were found to be facultative anaerobic, while yellow pigmented bacteria and non-pigmented bacteria were found to be obligate aerobic.

마우스에서 오존수의 급여가 쥐와포자충 감염에 미치는 영향

박배근,김덕환,류시윤,김현수,조성환,전무형 충남대학교 수의과대학 동물의과학연구소 2000 動物醫科學硏究誌 Vol.8 No.-

Ozone is very effective in acute and chronic viral disease as a virucidal agent in reversing positive antibody tests and in improving the general health of the animals. The effects of ozonized water supply against Cryptosporidium muris was studied in 5-weeks-old mice. After oral inoculation of mice with 1×10^6 oocysts, ozonized water(0.5ppm) and tap water were supplied to experimental and control group, respectively. The prepatent period of both group was 8 days postinoculation(PI). The patent period of experimental group was longer(62days) than that of experimental group(57days). The number of oocysts in the feces were maxium on days 28 PI, indicating 3.54×10^6 oocysts/experimental mouse and 5.56×10^6 oocysts/ control mouse. The number of discharge oocysts during 12-33 PI was more in control group than that of experimental group. In the view of gastric gland section on days 28 PI, the number of endogenous development of C muris was smaller in experimental group than in control group. This results indicates that the autoinfected sporozoite were damaged by ozone.

담도에 국한되어 증상을 유발한 석회쓸개즙 2 예

윤성우,이지영,하경호,이수경,한나,배효근,박선자 고신대학교 의과대학 2010 고신대학교 의과대학 학술지 Vol.25 No.2

Limy bile is a rare condition characterized by excessive precipitation of calcium carbonate in the gallbladder or bile duct. Recently we experienced two cases with obstructive jaundice in which limy bile in the common bile duct but not in the gallbladder for one case, and in the common bile duct and intra hepatic duct but not in the gallbladder for another case. The patients were treated by endoscopic sphincterotomy. Here, we report the cases and review the literature.

심판의 판정에 대한 구기 운동선수들의 의식에 관한 조사 분석

박상록,이근모 釜山大學校 附設 體育科學硏究所 1996 體育科學硏究所 論文集 Vol.12 No.-

The purpose of this study was to investigate the effect of referee's decision on athletes' consciousness by the questionnaire in Pusan, Kyongsangnam-province. Subjects were draw from basketball, volleyball, and team handball athletes. Crosstabs and χ² were utilized to investigate the effect of referee's decision on athletes' consciousness as the statistical method. The level of significance of all hypothesis tests were α=.05 and the write got results as follows; 1. In the question of fairness of referee's decision, both males and females groups responded that referees do their best as referee's responsibility, but athletes felt that referees need more fairness of decision in the competitions. To achieve higher record, the higher record groups felt referee's fault in the most of time. As higher father's education level' athletes untrusted and felt unfairness of referee, but fair decision was found depending upon economical levels. 2. In the question regrading referee's mistaken decision, males group felt that there were more referee's mistaken decision than females group's consciousness because males group's attitudes are more active and positive than females group. Also, males' play is very skillful and speedy so it is very hard to find the athletes' fault in the competition moment. Both males and females groups were not satisfied in terms of the referee's decision. The higher record groups felt that they did not trust referee's decision and they felt referee's mistaken decisions more frequently happened in competition situations. The higher fathers' educational level's athletes group felt more referee's mistaken decision. Depending upon economical levels, the referee' mistaken decisions was average. 3. In the question regrading reliable referee's decision, the male athlete groups felt referee's decision more effects on their victory than the females athletes group. It was found that there were more referee's mistaken decision in volleyball competition than basketball and team handball. Three different record groups felt that the referee's decision effects on their victory. In different father's educational levels and economical levels, they felt the referee's decision effects on their victory. 4. In the question of referee's attitudes, both male and female groups responded referee's attitudes were authoritative and average. Basketball and team handball players have more authoritative attitudes than volleyball player. And regardless of three different record levels, referee's attitudes were authoritative. As father's educational levels and economical levels, it found that referee's attitudes were very strict decision at the competitions.

사지의 급성동맥 색전증에 대한 응급동맥 색전제거술

박철완,원형섭,박정배,이근,조상훈,표창해,김상일 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2

Acute arterial occlusion of the extremities is often a surgical emergency and is due mostly to arterial embolus. It has infrequently been reported in the emergency department. Cardiac embolism is most commonly the result of atrial fibrillation secondary to valvular heart disease followed by ischemic heart disease. The emergency arterial embolectomy by Fogarty balloon catheter works well when the cause of occlusion is cardiac embolus obstructing normal vessels in a patient with valvular heart disease. Recently we met some patients with acute critical ischemia of the extremities due to arterial emboli in our emergency department. On physical examination, they all had symptoms of 5"P"s(pain, pallor, pulselessness, paresthesia, paralysis). After emergency arterial embolect omy, immediate improvement was observed in all patients. They were discharged within 1 week. We report our experiences with the review of literatures.

노안수술후 각막형태검사 변화

박근성,고길환,김용선,이재림,민병무,최시환 충남대학교 의학연구소 2001 충남의대잡지 Vol.28 No.2

We prospectively analyzed the corneal topography of 26 eyes in 26 patients who had undergone scleral expansion for correcting presbyopia. We examined 26 eyes of 26 patients which were devided into 2 groups (mean age: 51 years, range 40-60 years) according to type of scleral expansion band, with computerized corneal topographic analysis system. Preoperatively and 5 times postoperatively (1day, 1week, 2weeks, 1month, 2months), quantitative descriptors of corneal topograpgy such as Sim K (simulated keratometry value), SRI(surface regularity index), and SAI(surface asymmetry index) were measured at each visit. The mean follow-up period was 43 days. Sim K of the operative eyes ranged from 0 to 2.5 (mean, 0.93) before operation, and mean 2.24 at postoperative 1 day in group Ⅰ. In group Ⅱ, Sim K was mean 2.20 at postoperative 1 day and decreased thereafter. SRI was from 0.54 to 1.39 and SAI was from 0.09 to 0.45 before operation. After operation, mean SAI was maximum at postoperative 2 week and mean SRI was maximum at postoperative 1 day and decreased thereafter. After two months, it became minimum. This study demonstrates that quantitative topographic change after scleral expansion for correcting presbyopia were great during first 1 week after surgery but this change diminished thereafter. Further long studies are in progress to evaluate the long term effects of this procedure.

자동차 번호판의 형식 및 소재가 판독성에 미치는 영향

박근상,정경걸 건국대학교 산업기술연구원 2000 건국기술연구논문지 Vol.25 No.-

The purpose of this study is to propose the improved style and material of license number plate, which is the exterior panel of the automobile indicating the legal registration codes, in order to provide the observers with the better readability than that of the current number plate in Korea. The results are as follows; 1) The average readable distance of the single line sample plates, in day time, is longer than that of the double life ones by 22 percent. 2) The average readable distance of the reflective sample plates, in nighttime, is longer than that of the non-reflective ones by 14.7 percent. 3) The reflective yellow captions on blue background were perfectly read farther away than the blue captions on reflective yellow backgorund by 6.4 percent. Also, there was no significant difference between non-reflective color contrasted samples; blue on yellow background and yellow on blue background.

운동전야피질 신경세포의 운동정확도에 관한 연구

박상근,Ebner, Timothy J. 인제대학교 1991 仁濟醫學 Vol.12 No.2

대뇌운동전야피질 신경세포가 수의적 운동에 관여한다는 많은 연구 보고가 있지만 운동조절의 어떤 변수에 조절력이 있는지는 아직 규명되지 않았다. 저자들은 원숭이를 이용한 전기생리학적 실험을 통하여 운동전야피질 신경세포가 수의적 상지운동의 준비와 수행에 관여하며 공간 감응에 대한 특징이 있는 것을 먼저 발견하였다. 본 실험에서 저자들은 수행하여야 할 운동과제의 요구되어지는 정확도에 따른 운동전야 신경세포의 활동량의 변화를 관찰하였다. 잘 훈련된 원숭이를 이용한 장기적 단세포의 전기생리학적 기록을 통하여 운동전야 신경세포가 운동 정확도에 관여한다는 것을 알 수 있었다. Our previous work has shown that primate promoter cortex cells increase their discharge during voluntary arm movements, exhibiting a distinct selectivity for a region(direction and amplitude) of horizontal extrapersonal space. In this study "Sensitivity" to space was evaluated further by modifying the accuracy of the task. Starting from a central start zone two Rhesus monkeys were trained to move a manipulandum to one of six target boxes arranged around a central start zone. Using a draftsman's arm style manipulandum the animal positioned a cursor projected on the video screen which provided real time visual update of the animal's hand poison. Both reaction time and delayed movement paradigms were studied. Using chronic unit recording techniques the activity of promoter cortical neurons was recorded during these tasks. Most cells increased their discharge prior to or during the task, and amplitude of the discharge was highly dependent on the target box size. Decreasing the target size increased the cell's discharge related to the task. Both premovement and movement related disharge could be accentuated without changes in kinematics. In spite of this increase in discharge, the preferred direction did not change. These observations suggest the promoter cortex not only contains a representation of extrapersonal space but also encodes the accuracy of arm movements.