[논문]Operational Characteristics of CO2 Laser Adopted by Superposing-Discharge

Hee-Je Kim,Hyun-Ju Chung,Byoung-Dae Min,Jong-Han Joung,Sung- lun Park 釜山大學校生産技術硏究所 2003 生産技術硏究所論文集 Vol.62 No.-

오늘날 현저한 CO2 레이저의 응용 추세에 발맞추어 보다 다양한 형태의 출력 제어 기술이 대두되고 있다. 본연구에서는multi-Pulse Superposing-Discharge 기술을 이용하여 다양한형태의 CO2 레이저의 펄스를 성형 하였다. 펄스 성형을 위한 방법으로 PIC one-chip microprocessor를 이용하여 삼중 PFN 모률의 SCR을 각각 고유의 지연시간을 가지도록 제어하였다. 실험에 사용된 삼중 PFN 모률의 전원 회로는 각각 캐패시터 인덕터,SCR,고압 펄스 트랜스 그리고 고압 트랜스 2차측에 브릿지 정류기로 구성 하였다. 고압 펼스 트랜스의 1차측을 제어하므로서 PFN 모률의 동작을 저 전압에서 수행 할 수 있다. 트랜스의 2차측에 연결된 전파 정류기는 펄스 에너지를 부하에 지속적으로 전달한다. 본 연구에서는 삼중 PFN 모률의 각각의 SCR을 다른 시간 가격을 두고 트리거 하므로서 다양한 Long pulse shaping을 실현하였다. 또한 약 250-1000μs 의 주기를 가지는 다양한 펄스형 레이저 빔을 얻었다.

2003년 국내 중증급성호흡기증후군 진료 현황 및 문제점 분석

이진수,김은실,정문현,백제중,정선화,안주희,최영화,이선희,고철우,김성범,김민자,박승철,기현균,송재훈,최상호,김양수,이상오,조용균,박영훈,정숙인,김연숙,이흥범,손창희,장성희,정희진,김우주 대한감염학회 2004 감염과 화학요법 Vol.36 No.3

목적 : 2002년 말 중국에서 SARS가 발생한 이후 국내에서도 2003년 10월까지 총 3명의 추정환자, 17명의 의심환자가 보고되었다. 향후 추가적인 SARS의 유행이 우려되는 상황에서, 그간의 SARS 환자 진료에 있어서의 실질적인 준비사항, 진료 현황 등에 대한 조사를 통해 문제점을 파악하여, 향후 더 나은 대비가 될 수 있도록 개선점을 제시하고자 하였다. 재료 및 방법 : SARS로 의심되는 환자를 진료 경험이 있는 병원의료진을 대상으로 2003년 10월에 설문조사를 실시하였다. 설문에는 SARS 환자 진료 시의 실질적인 조치, 진료 현황, 병실, 응급실 및 외래에서의 격리 시설과 준비사항, 보건당국의 관리와 지원에 관한 사항을 포함하였다. 결과 : 대상이 되는 22개 병원 중 17개(17/22, 77.2%) 병원이 설문에 응하였다. SARS 환자를 위한 격리실은 응급실, 외래, 일반병실 및 중환자실에서 각각 9개(9/17, 52.9%), 5개(5/17, 29.4%), 15개(15/16, 93.7%), 4개(4/16, 25%) 병원에서 음압처리가 되어있지 않은 일인실 혹은 다인실이 사용되었고, 1개(1/16, 6.3%) 병원에서만 일반병실에서 음압격리실이 운영되었다. 입원환자의 진찰 시 개인보호구의 착용은 거의 모든 의료기관에서 이루어졌다. 보건당국에서 SARS지정병원의 시설 등을 사전에 확인한 곳은 1곳(1/12, 8.3%)이였고, 14개 병원(14/15, 93.3%)에서는 보건당국에 의뢰한 검사결과를 통하 받지 못하였다. 결론 : 의료기관에서 SARS 환자용 격리실뿐만 아니라 기존의 격리실 설비 등이 미흡하였으며, 특히 중환자실 및 외래의 준비가 더욱 부족하였다. 보건당국의 의료기관에 대한 종합적인 지원이 부족하였고, 병원과의 원활한 연계가 잘 이루어지지 않았다. SARS 만이 아닌 격리를 필요로 하는 질환의 적절한 진료를 위해 향후 병원 시설의 정비와 정부차원에서의 보다 구체적이고 실질적인 대책마련이 필요하다. Background : There was an worldwide outbreak of the Severe Acute Respiratory Syndrome (SARS) originated from China in late 2002. During that period three cases of suspected SARS and 17 cases of probable SARS were reported in Korea. With the concerns about the reemergence of SARS-coV transmission, it is important to be prepared for any possibility. So, this study is aimed to analysis the past measures in managing SARS and propose the amendatory plans to improve the preparedness. Materials & Methods : Questionnaires were collected among clinicians with any experience in managing the probable or suspected SARS cases in Oct. 2003. 17 out of 22 hospitals responded to the questionnaire. The contents in the questionnaire were practical activities, personal equipments, response plans, isolation facilities in emergency centers, outpatient clinics, general wards and intensive care units, and relationship with the public health department. Results : The dedicated isolation rooms in emergency centers, outpatient clinics, general wards, and intensive care units were prepared in 9 (9/17, 52.9%), 5 (5/17, 29.4%), 15 (15/16, 93.7%), and 4 (4/16, 25.0%) hospitals, respectively. Except for one hospital that newly made negative pressure room for SARS, single or multi-bed rooms without airborne infection control were used in all the other hospitals. The personal precaution principles were kept quite well in general wards. Before the designation of SARS hospital by the public health department prior evalution to see if the hospital was suitable for managing SARS was conducted in only 1 (1/12, 8.3%) hospital. The results of laboratory diagnosis were reported back in 1 (1/15, 6.6%) hospital. Conclusions : The isolation facilities which can control airborne infection were almost deficient not only for SARS but also for other respiratory transmissible diseases. For the infection control of transmissible diseases including SARS, more investment is needed on medical facilities and comprehensive support from the public health department required.

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

연마된 단일 모드 광 섬유에서 외피 두께의 측정에 관한 연구

정만영,윤성현 동아대학교 공과대학 부설 한국자원개발연구소 1989 硏究報告 Vol.13 No.1

This paper studied cladding thickness that is the most important parameter when optical divices are fabricated with polished single mode optical fiber. When a drop of liquid with appropriate index oil is placed on the polished surface of the single mode optical fiber, guided mode of optical fiber is coupled in the liquid index oil. This coupling induces additional loss of the guided mode. These losses vary with the evanescent field in the cladding, and it is proportioned to thickness of polished cladding, so we can get cladding thickness by the measurement of loss, during optical fiber is polished.

일부 여대생의 스트레스와 철분 영양상태에 관한 연구

승정자,하보경,김미현,최선혜 숙명여자대학교 건강. 생활과학연구소 1999 生活科學硏究誌 Vol.14 No.1

The purpose of this study was to evaluate the iron status of 39 female adult who divided into five groups according to the stress condition. The iron status was evaluated based on dietary intake and blood analysis. The average age of the subjects was 23.10years, and the average score of BMI was 20.06kg/m2. The proportion of subjects in each stress condition was : 2.56%(1) in A1type(the group who easily get disease associated with stress), 64.10%(25) in A2type(condition susceptible to the disease associated with stress), 30.77%(12) in ABtype(middle type of A and B), 2.56%(1) in B2type(appropriate stressed condition) and 0%(0) in B1type(risk free to the disease associated with stress). The average daily intake of energy in study subjects was 2,399kcal, ti caloric ratio of carbohydrate, protein, fat was 59.90 : 14.39 : 25.71, respectively. There was no significant difference in anthropometric measurements, dietary intake status, hematologic indices of iron status between high stress group(A1type and A2type) and low stress group(ABtype and B2type). To compare the iron stores between high stress group and low stress group, subjects in each group were devided into iron 0 mg, 250 mg, 500 mg group. Stress level did not affect iron stores although in both groups, number of subjects in iron 0 mg group were higher than those of iron 250 mg and 500mg groups. Correlation coefficients between anthropometric measurements, nutrient intake status, hematologic indices of iron status and stress score of subjects did not reveal any significance. Therefore, the results suggest that psychological stress did not affect the iron status in normal female adult. However, be more systematic study on stress and the iron status is required in the future.

소아 질환에 대한 통계적 고찰

정용헌,이건수,변상현 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2

Statistical analysis on out-patients from Apr. 1990 to Mar. 1991 and in-patients from Jan. 1990 to Dec. 1990 was done to assess the general patterns and trends of childhood diseases at Chungnam National University Hospital. 1. Total numbers of outpatients were 42408, of which 42.5% was in department of Pediatrics. According to the observation on patient distribution by month, the common were Jan. and Aug. 2. The most frequent age group of in-patients was 1-6 years of age, the least was under the 1 month, but in pediatrics the most frequent was under the 1 month. 3. According to numbers of in-patients by department, more than half was Pediatrics(52.7%) and followed by Pediatric ENT, Plastic surgery, Ophthalmology, Orthopedic surgery and General surgery in order. 4. The total numbers of in-patients were 2890, of which 1876 were male and 1014 were female. The ratio of male to female was 1.85:1. 5. According to the duration of admission, the most common period was of 8-l4days(41.9%), and mostly were loss than 28days(94.6%). 6. Average duration of admission was 12.3 days and the longest was Rehabilitation mcdicine(49.1 days), the shortest was Ophthalmolog,(5.0days). 7. The most common involved organ of in-patients in Pediatrics was neonate's, the next was respiratory's. 8. The most common disease was pneumonia in pediatrics, inguinal hernia in general surgery, pneumothorax in chest surgery, fracture of bone in orthopedic surgery, brain contussion in neurosurgery, exotropia in ophthalmology, T & A in ENT, cryptorchidism in urology, cleft palate in plastic surgery, convulsive disorder in neurology, schizophrenia in psychiatrics, urticaria in dermatology, and fracture of mandible in oral and maxillofacial surgery.

智異山 大單位 緬羊牧場 開發의 必要性

鄭鉉丞 진주산업대학교 1976 論文集 Vol.14 No.-

The impotance of and major problems on the development of some large sheep farms on the Mt. Chir were discussed on the bases of the author's experiences on this subject. through 9 years. 1. Sheep production in the high mountaineous area has a great importance in the view of economical food and wool production with the increased land productivity and utillization of natural resources. 2. The major problems on the developing sheep farms on the Mt. Chiri were considered as follows: 1) Livestock industries are successful only by the longterm developing schedu1e. 2) Sheep production in Korea in general, is one of the underdeveloped livestock industries. 3) Any agricultural industry on the high mountaineous area has much disadvantage in traffical and social conditions. 3. The natura1 conditions were considered good for sheep farming and it was recommended for the succseeful development of sheep farms on the Mt. Chiri that the Government grant a long-term loan of 1ower interest and improve the traffical conditions, the scientists be trained more widely and intensively on sheep farming and the large enterprises have more interests in the development of national land resources.

농촌인의 체격 및 체력 실태에 관한 연구

정성태,장창현,전태원 師範大學 體育硏究所 1993 서울大學校 體育硏究所論集 Vol.14 No.2

The purpose of this study was to investigate the physique and physical fitness of the rural area adults. To accomplish this purpose 202 adults were drawn from 4 different rural areas such as Chungnam, Junbook, Kyoungbook, and Chungbook, and their physique and physical fitness were measured. The data from these people were compared with those of 114 Seoul residents. The findings of this study were as followings; physique 1. The heights of rural area adults were shorter than those of urban area adults by about 4cm, and their heights tended to reduce by 2cm every 10 year as they got older. 2. The weights of rural area male adults were lighter that those of their urban counterparts by about 6kg ; rural area female adults were also lighter than their urban counterparts by 10kg. 3. The sizes of waist girths of both the rural area adults and urban area adults tended to increase after their 40s. physical fitness 1. There was no significant difference of grip strengh between rural and urban area male adults; rural area female adults exhibited stronger grip strengh than their urban area counterparts by about 4kg. 2. There was no significant difference of sit-up performance between rural and urban area male adults; rural area female adults showed weaker sit-up performance than their urban counterparts. 3. There was no significant difference of trunk bending performance between rural and urban area male adults; rural area female adults showed more flexible trunk bending performance than their urban counterparts.

煉炭灰給與가 豚의 成長-育成-肥育에 미치는 影響에 關한 硏究 : 第Ⅰ報 煉炭灰 給與가 仔豚育成 및 肥育에 미치는 影響 Ⅰ. Effect of Briquette ash on growing-fattening periods in swine

鄭鉉承 진주산업대학교 1981 論文集 Vol.19 No.-

This experiment was conducted to investigate the effect of feeding Briquette ash body weight gain in growing-fattening pigs on the basis of the data obtained the same litter six fattening and other litter three growing pigs from april 1, 1981 to June 9, 1981 at department of Animal Science, Jin-ju Agricultural & Forestry Junior Technical College. The results obtained are Summarized as follows: 1. The compositions of Briquette were Cu(17.5mg/kg), Zn(306mg/kg), Mn(116mg/kg), Fe(7.385mg/kg), Mg(0.191%), Na(0.039%), K(0.158%), P(0.043%), Ca(0.224%), NFE(10.96%), C-ash(71.31%), C-fiber(12.41%), C-protein(0.54%), and Moisture(3.74%). 2. The compositions of Briquette ash were Cu(21.0mg/kg), Zn(13.9mg/kg), Mn(98mg/kg), Fe(3.769mg/kg), Mg(0.183%), Na(0.025%), K(0.138%), P(0.074%), Ca(0.807%), C-ash(97.35%), C-fiber(4.13%), C-protein(0.52%), and Moisture(0.15%). 3. Thorugh the formulla feed+Briguette ash group slightly more than the formulla feed that in body weight, the effects of these were nonsignificant(P>0.05). 4. The fattening pig groups feeding the formulla feed+Briquette ash(4.48) were slightly inferior to those of the formulla feed(4.71) in feed efficiency. 5. Feed efficiency in the growing pig groups was 3.0 and the effect of feed efficiency in the atrophic pig groups was slightly superior. 6. In economical analysis, feed cost required for kg body weight gain was 829 won in the formulla feed group and 852 won in the formulla feed+Briquette ash group. 7. Feed cost was 528 won for kg body weight gain in the growing pig group. 8. The palatability of Briquette ash was good and health condition of pigs feeding Briquette ash was normal.

哺乳中 仔豚에 鐵分注射代用으로서의 煉炭灰 魚汁吸着飼料 給與 效果

鄭鉉丞,宋瑛敏 진주산업대학교 농업기술연구소 1992 農業技術硏究所報 Vol.2 No.-

본 시험은 포유중 자돈에 실시되고 있는 철분주사 대용으로 연탄재 어즙흡착사료를 급여하였을 때 나타나는 일당 사료섭취량, 평균 일당증체량 및 사료효율에 미치는 효과를 규명하기 위하여 1988년 4월 19일부터 6월 17일에 걸쳐서 진주농림전문대학 축산과 돈사에서 실시한바 다음과 같은 결과를 나타내었다. 1. 일당 사료섭취량은 대조구 408g보다 처리구가 418g으로 10g이 더 높았다(P>.01) 2. 평균 일당증체량은 대조구 222.94g보다 처리구가 296.89g으로 73.95g이 더 높았다(P>.01) 3. 사료효율은 대조구 1.83보다 처리구가 1.41로 개선되었다. 4. 포유자돈에 철분주사 대용으로 연탄재 어즙흡착 사료를 자유채식시켰을 때 자돈의 건강상태와 발육성적은 비교적 양호하였다. This experiment was conducted to investigate the effects of fish-soluble-absorbed briquette ash feed addition as the substitutes for Fe injection to sucking pigs. I measured daily feed consumption, average daily weight gain and feed efficiency in pigs. The experiment was carried out during the period of April 19. to June 17, 1988. at the pigpen of the Department of Animal Science of Chin Ju National Agricultural and Forestry Technical College. The results obtained are as follows : 1. Daily feed consumption was larger by 10g in the treatment group(418g) than in the control group(408g). 2. Average daily weight gain was lager by 73.95g in the treatment group(296.98g) than in the control group(222.94g). 3. Feed efficiency was higher in the treatment group(1.41) than in the control group(1.83). 4. When the sucking pigs were fed liberally fish-soluble-absorbed briquette ash feed as the substitute for Fe injection there was relatively a superior tendency to their growth and health conditions.