[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.

煉炭灰魚汁 吸着飼料開發에 關한 硏究

鄭鉉丞,金哲旭 진주산업대학교 1986 論文集 Vol.24 No.-

본 試驗은 煙炭灰 魚汁 吸着飼料 開發을 爲하여 1次에 成分分析과 2次로서 ??飼育에 添加 飼養詩에 나타나는 效果를 究明하고져 本 大學에서 生産한 Landrace(♀)×Berkshire(♂)=F_1 同腹 離乳仔??10頭를 配合飼料 單飼區인 對照區에 5頭, 煙??灰 魚汁吸着 飼料給與區인 試驗區에 5頭를 供試하여 1986年 1月 8日부터 4月 3日(84日間)에 걸쳐 育成期에는 煙炭灰 魚汁吸着飼料를 5% 添加하고 肥育期는 10%添加하여 飼養 試驗한 結果 및 煙炭灰魚汁吸着飼料의 成分分析 內容은 다음과 같다. 1. 煙炭灰魚汁吸着 飼料의 一般成分, 鑛物質成分, Amino酸成分 含量은 濃縮魚汁吸着 水準에 比例하여 높게 나타났다(組蛋白質 : 10%→3.42, 100%→22.16). 2. 日當 增體量은 試驗區(780g)가 對照區(650g)보다 높게 나타났다. 3. 飼料 攝取量은 試驗區(927kg)가 對照區(817kg)보다 높게 나타났으며 4. 飼料效率은 試驗區(2.82)가 對照區(3.05)보다 有意的으로 높게 나타났다. 5. 煙炭灰魚汁 吸着飼料 添加 飼養으로서 1kg 增體當 飼料費가 48원이 節減되었다. 9. 90kg 到達日令은 試驗區(155日)가 對照區(169日)보다 14日이 短縮되었다. 以上의 結果를 보아 廢棄物인煙炭灰와 廢水處理되는 魚汁을 混合 飼料資源化하므로써 飼料費 節減, 飼料效率改善, 營養素利用 增進, 環境汚染防止, 公害處理, 混合加工 飼料 生産으로 導入飼料 節減效果를 期待할 수 있고 國內 配合 飼料 原料 및 實需要 養畜農家 供給 活用이 可能할 것으로 飼料된다. A series of experiment was carried out to studdy the effect of brequette ash addition absorbed concentrated fish soluble in pig formula feed with the first crossbred progeny of the same litter weaned (Landrace ♀× Berkshire ♂), and analyzed the chemical composition, mineral content and amino acid content of brequette ash absorbed concentrated fish soluble. The results obtained are summarized as follow : With increasing absorbed rate of concentrated fish soluble to brequette ash, chemical composition, mineral content and amino acid content were higher. Average daily weight gain was heavier with 780g in the treatment than in the control(650g) Though total feed intake was higher in the treatment(927kg) than in the control(817kg), feed efficiency was superior with 2.82 in the treatment and feed cost per 1kg weight gain was cut down by more 48 won in the treatment than in the control. Average days of age at 90kg was shortened by 14 days in the treatment(155days) than in the control(169days). It was suggested from the results obtained as above that there seem to contribute to curtailment of feed cost, reformation of feed efficiency, body weight effect and shortening of days of age at 90kg by feeding brequette ash addition absorbed concentrated fish soluble in pig formula feed.

專門大學의 産業體 現場實習의 效率性 提高方案

鄭鉉丞,宋瑛敏 진주산업대학교 1987 論文集 Vol.25 No.-

Theis theis aims at presenting at presenting an effective plan of technical cllege students' field work at enterprises. It is based on the present writer's 30year teaching experience and the documentary records. This thesis analyzed our cllege's filed work plan and the last 3 years' assesments of 1461 students' field work by enterprises. And it suggests some necessary advance preparations. I asked 21questions of 150 enterprises, related agencies and stock farms to invite their views of promotiong the efficiency of the field work. Their answers are analyzed as follows: 1. It is necessary to create a circumstance to induce students' voluntary participation. 2. It is necesary to establish a complementary and cooperative guidance system among students, parents, school, enterprises and government. 3. Students' character-building and professionalism are needed as an advance preparation for the field work.

實科 敎育 課程 詳細化 硏究

鄭聖鳳,宋賢順 韓國實科敎育硏究學會 1996 實科敎育硏究 Vol.2 No.1

교육과정 상세화는 교수의 질을 향상 시키고 교수 내용을 다양화 시키며, 교수 목표 실현을 위해 필요하다. 이 연구의 목적은 초등학교에서 실과 교육과정을 효과적으로 활용하는데 있다. 이 연구는 크게 세부분으로 이루어져 있다. 실과 교육 목적의 상세화, 실과 교육과정의 단원설정, 실과 교육고정 상세화의 실제가 그것이며, 또한 5, 6학년 실과 교육과정 상세화를 부록에 제시하였다. The curriculum specification be needed to promote the instructional quality, to diversify the teaching contents and to be realized the instruction objectives on practical art education. The purpose of this study was to specified the practical art curriculum for the practical use in elementary school. This study was contained three parts: the specification of practical art curriculum, the contents and units establishment of practical art curriculum, practical specification of practical art curriculum. Also, the specifications of practical art curriculum on 5th and 6th grades were presented in appenices.

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.

Russian Comfrey(Symphtyum Peregrenium)의 添加給餌가 育成 및 肥育豚에 미치는 影響

鄭鉉丞 진주산업대학교 1994 論文集 Vol.33 No.-

This experiment were conducted to determine the feeding value of Russian Comfrey(Symphytum Peregrenium) by growing and fattening pig. Sixteen Landrace gilts were alloted into 4 treatments according to the levels of Russian Comfrey in pig ration such as 0%, 10%, 20% and 30%. Body weight of daily gain, feed efficiency and feed cost indexin each treatment were investigated. When Russian Comfrey fed 10-30%, per day, weight gain and feed efficiency was no significant(P<0.05)differences in growing and fattening pigs. Feed cost index, 10-30 % supplemented group was higher than that of control group in growing and fattening pigs.

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.

농촌인의 건강실태에 관한 연구

정동춘,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 health condition of rural area adults. To accomplish this purpose 98 adults were drawn from 2 different rural areas such as Chungnam and Junbook, and their health condition were examined. The data from these people were compared with those of 108 Seoul residents. The main findings of this study were as followings; 1. Neuralgia was the commonest disease in rural area adults, followed by Rheumatism, waist pain, and heart problem. 2. About 62% of rural area adults indicated that their average sleeping time was less than 7 hours per day. 3. About 48% of rural area male adults indicated that their daily labor was generally “severe,”while 61.3% of female adults said in the same way. 4. The blood pressure value of rural area males was 124/73 ㎜Hg, while that of urban area males was 114/77 ㎜Hg. 5. The values of GOT and GPT were higher in rural area males than in rural area females. 6. the value of cholestrol was lower in rural area adults than in urban area adults.