[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 給與가 豚의 成長一育肥育에 미치는 影響에 關한 硏究 : 第Ⅱ報 哺乳中 仔豚에 鐵分注射代用 및 離乳仔의 育成期에 微量 物質 供給劑로서 添加 給與 效果 Ⅱ. The Effects of Briquette ash addition on the Substitutes for Fe at Sucking and Micro-mineral matter at Growing after Weaning on pigs Sucking-Growing

鄭鉉丞 진주산업대학교 1982 論文集 Vol.20 No.-

This experiment was conducted to investigate the effects of Briquette ash addition as the substitutes for Fe at sucking and micro-mineral matter at growing after weaning on growth, feed efficiency, health conditions and palatability in pigs on basis of the obtained from April 1 to May 31, 1982 pigpen, Department of Animal Sicence, Jinju Agricultural & Forestry Junior Technical College. The results obtaine are as follows: 1. When fed liberally Briquette ash as the substitute for Fe at sucking, there is a superior tendency to the growth and health conditions in pigs. 2. The growth in the Briquette ash 3% addition was no significant (p>0.05) differences among the other groups. But the growth in that group was superior. 3. Feed consumption was no significant(P>0.05) differences between the control and the treatments. 4. Feed cost(won) required per kg gain weight was T_1(636.40), T_2(646.72), C(672.52) and T_3(684.56).

파킨슨씨병 환자에 있어서 자가부신수질 이식술

정상섭,박상근,오성훈,김선호,윤도흠,박정수,양우익,최인준,안영수,김경환,박창일,김진수,이현철 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.6

Recent experimental studies and clinical cases have suggested that grafting tissue from the adrenal medulla into the brain may alleviate the symptoms of Parkinson's disease. Autologous adrenal medullary grafts into the striatum was performed stereotactically in two patients with Parkinson's disease. Both patients were bedridden preoperatively, but 4 months after the surgery both became ambulatory and one was even capable of returning to his job. Even though the number of cases was small⑵ and the follow-up period was short, this study shows that adrenal medullary transplantation into the striatum may have some beneficial effects in patient with Parkinson's disease. Further experimental and clinical trials are necessary to see whether this procedure will be a recommendable surgical treatment for patients suffering from Parkinson's disease.

環境要因이 育雛에 미치는 影響에 關한 硏究 : 第1報 햇볕 照射가 育雛에 미치는 效果 Ⅰ. Effect of Sunlight on Chick Brooding

鄭鉉丞,朴成振,郭鍾瀅 진주산업대학교 1968 論文集 Vol.2 No.-

本 試驗은 環境要因中 햇볕조사가 育雛에 미치는 영향을 究明하기 爲하여 試驗에 着手하였던 바 다음과 같은 결과를 얻었다. 1.增體率에 있어서는 處理區間에 1% 水準의 高度의 有意性이 있었고 孵化 1週後에 放射한 T_1區가 C, T_2, T_3區보다 有意性이 높았다. 2.飼料의 要求率에 있어서 T_1區가 0.353으로서 C區(0.327), T_2區(0.309), T_3區(0.312)보다 높았다. 3.斃死率은 T_1區=0%, C區=5% T_2區=15% T_3區=10%였다. 以上의 結果로서 햇볕조사는 ??化後 1週부터 實施하는 것이 效果가 있음을 認定할 수 있다. This experiment was conducted to determine the effect of sunlight belonging to the environmental factor on chick brooding. the results obtained were as follows; 1.There were observed a significant difference (p<0.01)for body weight gain between treatments. T_1 lot which received sunlight after 1 weeks from hatching showed more body weight gain than that of C. lot, T_2 lot and T_3 lot. 2.In feed conversion T_1 lot with 0.353 was higher than C. lot (0.327), T_2 lot (0.309) and T_3. lot (0.312). 3.There was a mortality of 0% in T_1 lot, 5% C lot, 15% in T_2 lot and 10% in T_3 lot. From the above mentioned results of this experiment it is effective to expose the growing chick to sunlight after 1 weeks from hatching.

닥나무의 飼料的 價値에 關한 硏究 : 第 Ⅳ報 닥나무의 多目的 飼料木 開發 基礎調査 Ⅳ. Basic Survey on the Development of feed Plant for Various Uses of Broussonetia Kazinoki, Siebold

鄭鉉丞 진주산업대학교 1984 論文集 Vol.22 No.-

In order to study on the feeding value of Broussonetia Kazinoki, siebold from April, 1974 to October, 1984 in this paper. The characteristics of it were investigated and weight gain, feed consumption, feed conversion and feed cost, fed the leaves to growing­pattening pigs. In the characteristics of growth, the older the age of the tree is, the much more fast it grows. The chemical composition of the tree is a little similar to that of mulberry leaf and the native grass. Comparing the leaf with rbytidome, The chemical composition of rhytidome is approximately high. The results obtained in feeding experiment suggest that pigs feeding formulated ration adding leaf of Broussonetia Kazinoki, Siebold be superior in pig weight and feed conversion to the formulated ration only and feed cost decrease a little in the group feeding leaf of the tree. Considering the above results, I estimate that Broussonetia Kazinoki, Siebold would be the effective roughage of pigs and highly feeding value.

毒草 給與가 돼지의 增體, 屠體品質 및 經濟性에 미치는 影響

鄭鉉承 진주산업대학교 1985 論文集 Vol.23 No.-

本 試驗은 養豚不況期에 靑草를 給與하므로서 維持飼養을 通한 農家所得에 미치는 效果를 究明코저 本 大學에서 生産한 同腹離乳存豚8頭(??4??4)를 配合飼料單飼區에 2類, 靑草給與區에 6類를 供試하여 1985年 7月 3日 ~同年 11月 18日(138日間)에 걸쳐 增體量, 飼料攝取量, 飼料效率, 血液像, 屠體品質, 生豚販賣價格과 屠肉販賣價格比較, 存豚販賣時와 肥育豚生産販賣價格比較및 經濟性分析 等을 調査한바 다음과 같은 結果를 얻었다. 1. 日當增體量은 靑草給與區(0.55~0.58㎏)가 對照區(0.48㎏)보다 높았으나 有意差는 없었다. 2. 飼料攝取量은 靑草給與區(269~282㎏)가 對照區(263㎏)보다 若干 높게 나타났다. 3. 飼料效率은 靑草給與區가 (3.4~3.45) 對照區(3.95)보다 높게 나타났다. 4. 靑草給與를 하므로서 體重 1㎏ 增體當 飼料費가 對照區보다 108~182원이 節減되었다. 5. 供試豚의 血液像은 異狀이 없었다. 6. 背脂階層은 靑草給與區(1.0~1.1)가 對照區(1.3)보다 減少하였다. 7. 屠體形質에 있어서 生體重은 靑草給與를 많이 할수록 높게 나타났으나 枝肉率과 精肉率은 配合飼料만 먹인 區가 높게 나타났다. 8. 生豚販賣價格은 對照區보다 試驗區에서 靑草生産및 給與人件費를 除外하였을 때 頭當 10,000원의 純利益을 나타내었고 屠肉販賣價格은 手數料除外時에 生豚販賣價格보다 10,000원의 純利益이 나타나므로서 屠肉販賣時에는 頭當 20,000원의 純利益을 나타내었다. 9. 仔豚販賣價格(30,000)보다 肥肉豚生産販賣價格(150,000원)이 仔豚費와 飼料費(40,000원)를 除外하였을때 80,000원의 利益이 나타나 自家生産仔豚을 利用할때 購入時보다 30,000원의 純利益을 나타내었다. 以上의 結果를 보아서 遊休山地와 遊休耕作地에 草地造成과 飼料作物栽培및 飼料木開發等으로 自給飼料를 利用하므로 飼料費節減, 飼料效率改善, 增體效果및 良質肉生産에 寄與할 수 있을 것으로 思料되며 不況期 養豚의 問題點을 解決할 수 있는 一 方案이 될 것으로 思料된다. This experiment was conducted to investigate the effect of green fodder feeding on body weight gain, carass quality and economical efficiency on the basis of the data obtained from the 8 pigs of the same litter allocated to 2 pigs in the only formula feed group and 6 pigs in the formula feed plus green fodder group form the third of july, 1985 to the 18th of November, 1985(138days) at Chinju Agricultral& Forestry Technical College. The results obtained were as follows: Daily body weight, feed consumption and feed efficiency were higher in the green fodder group than in the only formula feed group and nonsignicant differences(p>0.05)between two groups. Feed cost per 1 ㎏ weight gain was cut down to about 108-182 won by feeding the green fodder. The blood picture was normal in the two groups and the fat thickness was thinner in the green fodder group than in the only formula feed group. Though carcass and meat percentage in carcass quality were higher in the formula feed group than in the green fodder group, the selling price of live weight had a net gain of 10,000 won by feeding green fodder and of carcass, 20,000 won expect the green fodder production and labor cost. It had more a net gain of 20,000 won by selling finishing pig than pig at weaning(56days). It was suggested from the results obtained as above that it seem to contribute to curtailment of feed cost, reformation of feet efficiency, body weight effect and high grade meat production by utilizing selfsupplying feed by pasture establishment, forage crops clutivation and forage tree development in the idle mountains and cultivated land, and to slightly solve problems of swine farming in the depression season.

스트레인 게이지용 크롬 박막의 증착과 그 특성

정귀상,정현석 동서대학교 부설 연구소 1996 연구소 논문집 Vol.1 No.-

This paper describes the basic characteristics of Cr thin-films used as strain gauges, in which the Cr thin-films were deposited by DC magnetron sputtering. As increasing input power, its resistivity and sheet resistivity were decreasing and the size of grain was larger. But as increasing Ar gaseous pressures, its resistivity and sheet resistivity were increasing and the size of grain was smaller. The optimized deposition conditions as a strain gauge were the input DC power was 7 W/㎠ and the Ar gaseous pressure was 9 mTorr. The characteristics of fabricated Cr thin-film strain gauge were the GF(gauge factor) was 5.86 in longitudinal strain and -2.04 in transverse one, the TCR (Temperature Coefficient of Resistance) was under 400 ppm/℃ and the TCS(Temperature Coefficient of Sensitivity) was around 0 ppm/℃ in the temperature range 25 to 150℃. The response of this strain gauges is almost linear in tensile strain.

돼지정액으로부터 오염미생물의 분리 및 항생제감수성

정기화,이현택,유차열,이상원 진주산업대학교 산업과학기술연구소 2007 산업과학기술연구소보 Vol.- No.14

4개소의 인공수정센터로부터 돼지정액을 제공 받아 돼지정액 중에 서식 중인 미생물을 순수분리하고, 그 미생물에 대한 항생제 감수성 검토를 행하였다. 2006년 7월과 9월에 채취한 시료의 원액에서 각각 3.6×10^(2)~2.6×10^(9) 및 3.8×10^(2)~5.5×10^(3)의 콜로니가 나타났으며, 희석정액의 보존일 수가 길어질수록 총균수가 많은 것으로 나타났다. 돼지정액 중에서 검출된 미생물로는 Bacillus sp., Staphylococcus sp. 및 E. coli와 같은 세균이 대부분이었으며, 그 이외에 Pseudomonas sp. 및 Norcardia sp. 등의 미생물들이 검출되었다. 이들 미생물에 대한 여러 종류의 항생제 감수성을 검토한 결과 enrofloxacin과 neomycin은 분리한 모든 미생물에 대하여 감수성을 나타내었으며, cefoxitin과 norfloxacin은 Norcardia sp.을 제외한 다른 미생물에 감수성을 나타내었다. Bacterial contaminants from boar semen, which was provided by the different 4 Artificial Insemination Centers in Korea, were isolated and investigated for antibiotic sensitivity. Bacterial flora were 3.6 × 10^(2) ~ 2.6 × 10^(9) CFU/mL and 3.8 × 10^(2) ~ 5.5× 10^(9) CFU/mL from raw boar semen collected from the period June ~ July to August ~ September 2006, respectively. Total viable cells of diluted boar semen were increased according to storage period. Isolated microbes were mostly detected as bacterial cells such as Bacillus sp., Staphylococcus sp. and Escherichia coli, followed by Pseudomonas sp. and Norcardia sp. All the microbes isolated from boar semen were sensitive to antibiotic enrofloxacin and neomycin. Norcardia sp. was only resistant and the others cells were sensitive to antibiotic cefoxitin and norfloxacin.