외상 후 뇌 지방색전증 1예

문정미,소정일,김용권,류진호,허탁,서정진,민용일 대한응급의학회 2001 대한응급의학회지 Vol.12 No.2

Post-traumatic fat embolism was first reported by Zenker in 1862, Von Bergmann reported the first clinical diagnosis of the fat embolism syndrome in 1873. Fat embolism has been associated with traumatic or non-traumatic disorders. Fat embolization after long bone trauma is probably common as a subclinical event. The diagnosis of fat embolism syndrome is based on the patient's history, is supported by clinical signs of pulmonary, cerebral, and cutaneous dysfunction, and is confirmed by the demonstration of arterial hypoxemia in the abscence of other disorders. Two different mechanisms cause fat to embolize: direct entry of deposit fat into the blood stream and agglutination of endogenous or exogenous plasma fat. MRI can detect a cerebral fat embolism with a higher sensitivity than cerebral CT. We report a case of post-traumatic cerebral fat embolism without pulmonary involvement, and we present a review of the literature. A 16-year girl had a traffic accident and pelvic bone fracture. Forty eight hours later severe trauma become stuporous without a focal neurological deficit. The patient received supportive therapy, and her condition improved throughout her hospital course. She was discharged with good condition after a 30-day hospital stay.

파워포인트 동화 활용 제시 방법이 유아의 주의집중과 컴퓨터 흥미도에 미치는 효과

정진명,이소희 숙명여자대학교 아동연구소 2001 兒童硏究 Vol.15 No.1

The purpose of this research was to study the effects of content delivery through means of fairy tales on children's attention span and their overall level of interest towards computers. To this end, the research question was structured as follows: Question 1: Depending on the method of PowerPoint presentation, are there differences in children's attention span towards the delivered content? Question 2: Does the presentation of fairy tales through means of a PowerPoint presentation influence and affect children's interests in computers? The subjects of this research were 40 students from the "H" Kindergarten in Hong Jeh Dong, Seoul. The group was divided into a test group of 20 students who were presented with fairy tale stories told using PowerPoint, and a comparison group of 20 students who were presented with fairy tale stories delivered using pictures. The research was conducted in four sessions over a span of four weeks, with 15 minutes spent per session. For sake of objectivity, an emphasis was placed on using fairy tales likely unfamiliar to students in both groups. The four stories used in this research were "The Lion and the Grandfather" (1997) John Burningham's "Hey, Get Off Our Train" (1995) Annette Tjong's "Baba Baba" (1998) and Kie Nobue's "The Grass Seedling is the Grass' Baby" (1997). For the research, color copies of the stories and a PowerPoint version using spanned pictures were created. The test group was shown the PowerPoint version of the stories, and the comparison group was presented with the picture version using color copies. The researchers in the delivery of the two presentations were teachers with 8 years' experience, 4 of which were ion early education. VTR recordings were made as the children listened to these stories, and their attention spans were timed through replay of the recording on a 29" TV screen and measurement using a stopwatch. As well, the aforementioned PowerPoint program was designed taking advantage of the full capacity of computers' multimedia tools in order that children's understanding/nervousness/interest, as reflective of children's overall interest towards computers, could be assessed by observing changes in interest level, In order to gauge changes in level of interest, tests were conducted using "interest measurement sheets" both before and after telling the stories via PowerPoint. The finding of this research are as follows: Regarding Question 1 : In regards to the effects of the method of delivery of fairy tale stories on the attention level of children, it was found that telling these stories using PowerPoint lead to longer attention span as compared to story telling using pictures only. Regarding Question 2: Stories using PowerPoint were effective in raising children's interests toward computers. Based on these findings, it was ascertained that in comparing the effects of story-telling using pictures versus PowerPoint on a subject group of 5-year-olds, the PowerPoint method of delivery had a greater affect in prolonging attention span and that this method had effect on the children's overall level of interests toward computers.

쌀 調理過程 中 麥飯石의 Cd除去 能力에 關한 硏究

陳甲德,裵基哲,李正秀,金英姬 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.9 No.1

It was investigated Cadmium eliminating capacty of Quartz Porphyry(Q.P.) during washing, swelling, and cooking process in rice contaminated artificially. 1. After washing the rice four times with water, the eliminating rate of Cadmium from artificially contaminated sample were 16% in control group, 28% and 42% in 25g/kg and 50g/kg Q.P. treated group, respectively. 2. Swelling of rice in water about 20 minutes didn't change the Cadmium level in Q.P. treated group. 3. Cadmium eliminating efficiency by cooking was significantly increased in Q.P. treated group (43~54%) compared to control group(31%). 4. These results suggest that treatment of rice with Q.P. is very effective to remove the Cadmium contamination in rice.

中國 契約法 總則에 관한 槪論的 考察

金萬紅,黃鉦源 韓國海洋大學校 人文社會科學大學 1999 韓國海洋大學校 人文社會科學論叢 Vol.- No.7

경북 일부 지역 비닐하우스 농사자와 일반 농사자와 농부증 실태 및 관련요인

이중정,양진훈,,황인섭 大韓産業醫學會 2006 대한직업환경의학회지 Vol.18 No.2

비닐하우스 농사자와 일반 농사자의 농부증 유병률의 차이를 비교하고, 농부증의 유병과 관련된 요인들을 규명하기 위하여, 2003년부터 2005년까지 경상북도 고령군과 안동시 지역을 대상으로 인구학적 특성 및 생활습관력, 농부증 증상 유무, 그리고 농작업 특성을 조사하였다. 연구 대상자 총 394명 중 비닐하우스 농사자는 203명(51.5%), 그리고 일반 농사자는 191명(48.5%)였으며, 남자는 51.3%, 여자는 48.7%였다. 하루 평균 농사를 짓는 시간은 일반 농사자에 비해 비닐하우스 농사자가 길었다. 농약 살포 시 마스크와 방제복 착용류은 비닐하우스 농사자의 경우 일반 농사자에 비해 매우 낮았다. 농부증 양성률은 33.0%로 비닐하우스 농사자와 일반 농사자 간에 유의한 차이를 보이지는 않았다. 그리고, 8가지 농부증 신체증상 중 요통을 호소하는 경우가 가장 많았다. 농부증과 관련된 요인을 분석한 결과, 비닐하우스 농사자의 경우 남자에 비해 여자에서, 농사지은 총 기간이 40년 이상으로 긴 경우, 하루평균 농사짓는 시간이 10시간 이상으로 긴 경우에 농부증 양성률이 유의하게 높았으며, 일반 농사자의 경우에는 남자에 비해 여자가, 그리고 농약 살포 횟수가 적을수록 농부증 양성률이 유의하게 높았다. 다중 로지스틱 회귀 분석 결과 비닐하우스 농사자의 경우, 남자에 비해 여자가 3배 이상, 하루평균 농사짓는 시간의 경우 10시간 미만인 경우에 비해 10시간 이상인 경우가 2.6배, 그리고 일반 농사자의 경우에는 남자에 비해 여자에서 농부증 양성률이 4배 이상 높은 것으로 나타났다. 비닐하우스 농사자의 경우 일반 농사자에 비해 농사시간이 많을 뿐 아니라 운동률이 매우 낮고 수면시간이 상대적으로 적으며 농약 사용시 보호장구의 착용률이 낮으며, 비닐하우스 농사자와 일반 농사자 모두 남성에 비해 여성에서 농부증의 위험이 높아 이에 대한 대책 마련이 시급히 이루어져야 할 것이다. Objectives: This study was performed to estimate the risk factors affecting the farmers' syndrome of vinylhouse and non-vinylhouse farmers in the Gyeongbuk Province rural area. Methods: As a cross-sectional study, a questionnaire survey was conducted from 2003 to 2005. Data was collected from 243 vinylhouse farmers and 236 non-vinylhouse farmers. The data from 394 subjects were used for the final analysis. We surveyed their lifestyle, 8 components of farmers' syndrome and characteristics of farm work. Results: For the vinylhouse and non-vinylhouse workers, 32.0% and 34.0% were positive for farmers syndrome, while 48.3% and 43.5% were suspicious, respectively. The differences between the two groups were not significant. For both groups, the most frequent symptom of farmers' syndrome was lumbago, followed by paresthesia of hand or foot, and shoulder stiffness. Among the vinylhouse workers, the rates of wearing protective equipment and washing the skin after spraying pesticide were significantly lower than among the non-vinylhouse workers. From multiple logistic regression analysis, the risk factors significantly associated with farmers' syndrome were sex {odds ratio (OR)=3.12, 95% confidence interval (CI)=1.42-6.89} and hours of farming per day (OR=2.63, 98%CI=1.22-5.65) among vinylhouse workers. However, sex (OR=4.24, 95%CI=1.87-9.65) was the only the risk factor significantly associated with farmers' syndrome among the non-vinylhouse workers. Conclusions: In conclusion, educational programs and attention to the female farmers were needed in particular. In addition, it was recommended that the farmers wear protective equipment continuously from opening the coverlets of the pesticide container to the completion of pesticide spraying, and wash the skin immediately after contact with pesticides.

반도체 습식세정에서 오존이 첨가된 초순수수에 대한 연구

한정훈,박진구 漢陽大學校 工學技術硏究所 1997 工學技術論文集 Vol.6 No.1

The purpose of this study is to investigate the behavior of ozone in DI water that has been applied to replace H2O2 in semiconductor wet cleaning processes. The concentration of ozone as a gas phase was measured by both a titration and the electrolysis method. The titration method was more accurate than the electrolysis method. However, the concentration of ozone in DI water showed better accuracy in measurements using electrolysis method. The concentration of the generated ozone gas was a function of the applied power and the oxygen flow rate. The solubility of ozone in DI water was dependent on the input gas flow rate and concentration. To reach a saturation of ozone concentration in DI water, it took around 15 min. The solubility of ozone in DI water was a strong function of the input ozone concentration.

열적 변화를 이용한 실내환경 가스의 분류

최낙진,심창현,송갑득,주병수,이윤수,이상문,이덕동,허증수 한국센서학회 2002 센서학회지 Vol.11 No.5

단일 기판위에 온도측정용 Pt 박막과 Pt 히터 그리고 가스 감지를 위하여 순수한 SnO_2 박막과 Pt가 첨가된 SnO_2박막을 설계하고 제작하였다. 제작된 소자는 실내환경가스인 이산화탄소, 프로판 그리고 부탄의 분류에 응용되었다. 동작 온도를 가변하기 위하여 히터의 입력 전압을 사다리꼴로 인가하면서 SnO_2 감지막의 반응특성과 실내환경가스들에 대한 분류여부를 조사하였다. 감지막 반응특성곡선에서 여러 변수들을 추출한 후 주성분분석(principal component analysis : PCA)을 통하여 가스 분류 특성을 검증하였다. Two SnO_2 based sensing films(pure SnO_2 and SnO_2/Pt) and a Pt thin film for temperature sensor on an alumina substrate were designed and fabricated for classifying the indoor environmental gases. By controlling the heating power in the shape of trapezoid, unique four sensing response curves created from both SnO_2 film and SnO_2/Pt film. Then, various parameters were extracted from sensing response curves and carried out principal component analysis(PCA). The results confirm that a sensor array with the proposed operating mode was extremely effective in classifying indoor environmental gases such as CO_2, C_3H_8, C_4H_10.

선박의장 배치 설계의 검도를 위한 컴퓨터 지원 시스템의 개발 사례

노재정,조형석,전진영,성낙운 경성대학교 공학기술연구소 1999 공학기술연구지 Vol.6 No.-

The purpose of this study is to develop a computer support system for the inspection of the outfitting arrangement of a ship design, which will increase the accuracy and the effectiveness of the inspection process. This system is integrated with a ORACLE database for transferring and storing 3D CAD data into the inspection system, and a dVISE virtual reality system for displaying the attributes of entities and the inspection results.

제주도 용천수의 지역별 수량변화

윤정수,박상운,강석수,현영진 제주대학교 환경연구소 1998 환경연구논문집 : 제주대 Vol.6 No.-

This study purposes to elucidate the effects of changes in precipitation and tide level on the spring water discharge quantity in Cheju Island. For this purposes. local and seasonal variations of discharge quantity have been measured at representive 19 springs covering the entire Island. In the middle mountain region, the discharge quantity is largely influenced by the precipitation, but it has a little relationship with the precipitation in the western region and the southern region. In the eastern region, influence of tide is larger than the precipitation, and the northern region is influenced by both precipitation and tide. In the entire study area, the spring water discharge reaches at maximum in the wet season of July, and shows minimum in the dry season from December to February. The discharge variation in the middle mountain and north regions is two to three times as large as that in the other regions. The comparison of the results of ths study with existing data shows discharge increase at the inch'onk'mul(about 6.000㎥) in the eastern region, Kwakgimul(about 7,000㎥) in the western region, Kangjungchun (about 11.000㎥ : WRDC), Jaguri(about 5,000㎥ : AFDC), Gongchunpo (about 3.000㎥) in the southern region, Yongyeanchun(about 1,500㎥) in the northern region, whde the discharge decrease at Sernurungmul(about 5,000㎥) in the eastern region, Ongpochun(about 10.000㎥) in the western region, Hwasun Dokmul(about 1,500㎥), Kangjungchun( about 28,000㎥ : AFDC), Jaguri(about 43,000㎥ ; WRDC) in the southern region, Sanjimul( about 3.500m3), Oleamul( about 6,200m3) in the northern region. In the Yongyeanchun, tide intimately influences quantity, electrical conductivity, level and temperature of spring water. The spring water in the Yongyeanchun discharges for 17 hours during the hgh tide, then undlscharged for 11 hours during the low tide.

組織培養에 依한 양배추의 繁殖에 關한 硏究

趙三增,金鎭漢 충북대학교 농업과학기술연구소 1990 農業科學硏究 Vol.8 No.1

This study was conducted to evaluate several factors, such as media, plant growth regulators, parts of peduncle and varieties, which affect callus growth and organogenesis in tissue culture. The results obtained were summarized as follows ; 1.Callus formation was higher than 95% in all treatments, while Murashige and Skoog(MS) medium induced good result in organogenesis. 2.Higher ratio of adventitious roots was developed at higher 2, 4- D (2, 4-Dichlorophenoxy acetic acid) concentration in B5 (Gamborg et al.) medium. 3.Premeristem tissue were formed profusely when segments of auxillary bud tissue were cultured on MS medium containing 1.0/mg/1 NAA (α-Naphthalene-acetic acid) and 2.0 mg/1 BA(6-Benzylaminopurine). 4.Comparing to the single application of NAA combined treatment of NAA and BA in MS medium decreased adventitious roots, but increased shoot differentiation. 5.Organogenesis was higher in order of Top > Base > Middle parts of peduncle. 6.Variety 'Okina', which grew vigorously, showed greater rate of callus growth and organogenesis than variety 'Ib-chu'.