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이원유,장지철,김형돈,한부석,Lee, Won You,Jang, Ji Cheul,Kim, Hyoung Don,Han, Bu Seuk 대한치과교정학회 1991 대한치과교정학회지 Vol.21 No.3
To study the possibility of attraction magnetic forces to expand maxillary arch, we used 2 big adult dogs, 2 small puppies, 1 small adult dog as experiments, and 1 small adult dog as a control. We measured the intercanine width and intermolar width and histologically observed in the suture and cervical and apex region of teeth and took occlusal X-rays to observe separation of suture line in the maxilla. The results were as follows: 1. Expansion velocities of intercanine (0.25mm/day) and intermolar widths (0.23mm/day) in puppies were faster than those (0.135mm/day, 0.09mm/day) in adults. 2. In all experiments in adults (0.135mm/day) and puppies (0.25mm/day), expansion velocity of intercanine widths were faster than those (0.09mm/day, 0.23mm/day) of intermolar width. 3. In all experiments ectatic changes were observed and cellularities of fibroblast increased in the suture line. Only in adults dogs the separations of palatal suture were observed in the occlusal X-ray view. 4. In the puppies bony deposition was particularly observed in the suture line and micro-bony fragments were often observed. 5. In the all experiments no root resorption was observed in the cervical and root area, but normal root resorption due to eruption of permanent teeth was observed in the puppies.
김일규(Il Kyu Kim),김형돈(Hyung Don Kim),정은형(Eun Hyoung Jeong) 대한구강악안면외과학회 1997 대한구강악안면외과학회지 Vol.23 No.2
This study was performed to compare the size of pharynx, the soft palate, the hyoid bone according to the horizontal and vertical classification of the jaws. The samples of this study were 68 malocclusion patients(l9 men and 49 women) over 18 years old. The lat. cephalometric radiographs were taken and the distance and angle of the craniofacial skeleton, soft palate and upper airway were measured and evaluated statistically. The results were as follows. 1. In the horizontal classification of the jaws according to ANB to angle, 1) The size of orpharynx of class II malocclusion was smaller than that of the Class III groups. 2) There was difference in the size of nasopharynx between the Class I, Class II, Class III groups. 3) The position of hyoid bone in Class III malocclusion was more anterior and superior position than that of the Class I and Class II groups. 4) There was no difference m the size of soft palate between the Class I, Class II, Class III, groups. 2. There was no difference in the size of pharynx, the soft palate, the hyoid bone according to vertical classification of the jaws.
조성현(Sung-Hyeon Cho),이군택(Goon-Taek Lee),김형돈(Hyoung Don Kim),김보현(Bo-Hyun Kim),김준영(Jun-Young Kim),한상재(Sang-Jae Han),김병일(Byung-Il Kim) 한국토목섬유학회 2011 한국지반신소재학회 학술발표회 Vol.2011 No.4
In the area of soil and groundwater environment, explosives are being highlighted. Therefore establishing the criteria for remedial works and developing the related technology are very important issues in the scope of nationwide research project. This investigation was carried out in military shooting area using explosives and focused on the determination of explosive compounds contents in soil and water. Because the domestic criteria have not established, the contents of explosive compound were compared with ROD(Record of Decision) of US EPA. Totally, 6 of 117 sampling point were contaminated and 4.3% of surface soil (0-10 ㎝) and 1.9% of subsoil (10-30) were contaminated. However, ROD value is too site specific according to site conditions to assess degree of contamination using simple comparison of analytical data with ROD. The results of this investigation are valuable for the selection of candidating sites for future precise investigation and risk assessment.
김형돈,최수영 경희대학교 사회체육연구소 1996 體育科學論叢 Vol.- No.9
The purpose of this study was to investinvistgate the personality differences of the youths living in the area of Seoul who were involved with sport activities. The subjects were randomly selected from the students attending the middle school. The subjects selected the type of sport being involved and answered the questionnaire. The results were analyzed using the SAS statistical package with student paired t test and ANOVA. The P<.05 was chosen to represent statistical significance. The results showed that 90% of the youths were imvolved with the sport regardless of type. Of the participation type the youths were involved with affective participation regardless of sex, living area, and grade. the most of the subjects were motivated to participate to the sport by friend and broadcast network. The personality characteristics were statistically not significant which were caused by participating different sport. No personality differences existed among the subjects being involved with different type of participation. However all the subjects showed higher point in the activity nature, which means any type of sport involvement would improve the activity nature. The 3rd grade students showed high anxiety tendency despite of the participation. The school ground was proved as the easiest, accessible place For sport activity. The most popular sport for the youths was the ball game such as basketball, soccer, and badminton. The youths expected to improve their own physical fitness as a resuit of participation.
신체적성 운동 프로그램의 참여가 성장기 아동의 체력 및 형태적 요인에 미치는 영향
김형돈,김명진,배기창 경희대학교 사회체육연구소 1996 體育科學論叢 Vol.- No.9
This study has analyzed the relativity between the physical constitution and strength by comparatively analyzing the difference between the group of 59 male and female infants which has been participating at the periodical physical aptitude program and the one of 59 male and female infants which has been taking part at art program in order to examine the effect of physical aptitude program to the physical constitution and strength. The following conclusions have been reached under the above analyzed results: 1. In the comparison of physical constitution between the group received the physical exercise and the one not received the exercise has shown that both the height and breast of the male infants showed significant difference by(p<.01) in height and(p<.05) in the breast while very high significant difference in height by (p<.001) of the female infants. This analysis has shown that the group of having exercised showed high. 2. In the comparison of physical strength, the boy infants showed very high difference in V- sitting and 25meter run by(p<.001) that the exercised group showed good records while the female infants very high significant difference in standing up and sitting by (p<.01), in 25 meter run significant difference was appeared by (p<.05) and significant high difference in round run by (p<.001). It gives us the information that the more they have exercised the better they got the records. 3. The relativity between the male and female infants in physical constitution and strength, there appeared high relativity in the height, the standing broad jump by (p<.05), in 25 meter run (p<.01), round run (p<.001) and in the weight, rising and sitting (p<.05), round run (p<.05) and in the breast, 25 meter run (p<.01) and round run (p<.01) and in sitting height, the balancing with one leg (p<.05). Other events showed no relativity.
장지철,김형돈,한부석,이원유 대한치과교정학회 1991 대한치과교정학회지 Vol.21 No.3
To study the possibility of attraction magnetic forces to expand maxillary arch, we used 2 big adult dogs, 2 small puppies, 1 small adult dog as experiments, and 1 small adult dog as a control. We measured the intercanine width and intermolar width and histologically observed in the suture and cervical and apex region of teeth and took occlusal X-rays to observe separation of suture line in the maxila. The results were as follows: 1.Expansion velocities of intercanine(0.25mm/day) and intermolar widths(0.23mm/day) in puppies were faster than those(0.135mm/day, 0.09mm/day) in adults. 2.In all experiments in adults (0.135mm/day) and puppies(0.25mm/day), expansion velocity of intercanine widths were faster than those(0.09mm/day, 0.23mm/day) of intermolar width. 3.In all experiments ectatic changes were observed and cellularities of fibroblast increased in the suture line. Only in adults dogs the separations of palatal suture were observed in the occlusal X-ray view. 4.In the puppies bony deposition was particularly observed in the suture line and micro-bony fragments were often observed. 5.In the all experiments no root resorption was observed in the cervical and root area, but normal root resorption due to eruption of permanent teeth was observed in the puppies.