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      • [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.

      • KCI등재후보

        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.

      • 智異山 면양목장 조성에 관한 연구 : Ⅷ報. 智異山 山野草가 緬羊의 繁殖率에 미치는 영향과 羊毛의 加工利用方法, 販路方案, 貯藏法 및 緬羊團地造成時의 經濟性 分析 Ⅷ. Effect of the native herbages in Mt. Chiri on the breeding percentage of sheep and the processing method, way of marketing and storage of wool and economical analysis in the collective feeding of sheep

        鄭鉉丞,姜奉泰,李炳五 진주산업대학교 1972 論文集 Vol.9 No.-

        This is the report for 1971 of the third year project among the three years plan on the development of sheep range in Mt. Chiri. To investigate the effect of native grasses in Mt. Chiri on the breeding percentage of sheep this experiment was carried out from March 22, 1971 to March 21, 1972. Numbers of experimental animal used in this experiment were 12. Furthermore, the processing method of wool, marketing, economical analysis in the collective feeding and storage were investigated in cooperation with this experiment. The results obtained here were as follows; 1. For the processing method of wool, there are two ways; one of the processing method of wool is the self-processing method which follows the easy method of wool processing and another of the processing method of wool exchange with the good of wool texture company which follows the charge processing method of wool. 2. For the marketing route of wool, because the wool texture company can buy limitlessly wool, there are two ways to sell wool. The one of the way is the direct sell method of wool to the wool texture company and the other of the way is the sell method of wool via the route of circulation mechanism. 3. In the case of economical analysis for the collective feeding of sheep, if farms could raise 3,000 of sheep in the method of collective feeding it could get net income of 150,000 to 300,000 won for 52 days per farm per year. 4. For the storage of wool, to attach of wool fat must be needed and in the case of short period storage, wool must be placed in the arid place and in the case of long period storage, wool should be prevented from the attack of insect and rat, attachment of spurious article such as dust, decrease of weight and denaturation of wool fat. 5. The breeding percentage of sheep fed only native herbages plant was 60%.

      • Russian Comfrey(Symphtyum Peregrenium)의 생초 및 건초 給餌가 育成豚의 增體量, 飼料攝取量 및 飼料效率에 미치는 影響

        鄭鉉丞 진주산업대학교 농업기술연구소 1997 農業技術硏究所報 Vol.10 No.-

        本 硏究는 養豚不況期에 農家維持飼養時의 育成豚에 있어서 飼料費 節減을 爲하여 仔豚에 Russian Comfrey의 생초 및 건초를 配合飼料에 各各 10%를 理區別로 添加給餌하여 日當 增體量, 飼料攝取量, 飼料效率을 調査하고자 실시하였다. 本 試驗에서 얻은 結果를 要約하면 다음과 같다. 1. 日常 增體量은 대조구보다 T1 및 T2구에서 다소 낮은 경향을 나타내었으나 處理區間에 有意的(P>0.05)인 差異가 없었다. 2. 사료섭취량은 대조구에 비하여 T1 및 T2구에서 다소 높았으나 處理區間에 有意的(P>0.05)인 差異가 없었다. 3. 飼料效率은 대조구보다 T1 및 T2구에서 다소 낮았으나 處理區間에 有意的(P>0.05)인 差異가 없었다. 4. Russian Comfrey에 對한 豚의 嗜好性은 良好하였고 Russian Comfrey의 생초 및 건초를 건물기준으로 10%까지 添加給餌 하여도 健康上의 異常은 나타나지 아니하였다. 以上의 結果로서 遊休山地와 耕作地에 Russian Comfrey를 自給飼料로써 生産利用할 때 飼料費節減 飼料效率改善, 豚의 增體效果等으로 養豚 不況期의 農家所得의 維持方案이 될것으로 思料된다. This experiment was conducted to investigate the effect of fresh and dried Russian Comfrey(Symphtyum Peregrenium) feeding on body weight gain, feed intake and feed efficiency of growing pigs. 8 Landrace gilts of the same litter were alloted to 3 pigs in the only concentrate group and 6 pigs in the concentrate plus fresh and dried Russian comfrey. The result obtained were as follows ; Daily body weight gain, feed intake and feed efficiency were no significant(P>0.05) differences among three groups.

      • 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.

      • 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.

      • 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.

      • 지리산 면양 목장 조성에 관한 연구 : 4보, 牧草播種 適期 및 山野草의 刈取利用 可能 回敎調査 4. On Seeding Period of the Forage Grass and Outting Frequency of the Native Growing Grasses

        鄭鉉承 진주산업대학교 1970 論文集 Vol.7 No.-

        지리산 면양목장 조성연구 2차년도 계획인 70년도의 면양 입식사육과 사료작물재배 가능성 여부를 알기 위한 기초자료를 얻으려고 예비조사로서 69년도에 면양4두를 강원도 대관령 고령지 시험장에서 운반 입식 사육하고 사료작물 7종을 도입재배하여 다음과 같은 결과를 얻었다. 1. 중체량은 학교 면양이 20.6 ㎏, 지리산 면양이 20.5 ㎏로서 성장률로 나타낼 때 지리산 면양의 성장률이 0.3% 높았다. 2. 산모량은 학교면양이 4.9㎏, 지리산 면양이 4.5 ㎏로서 학교 면양의 산모량이 0.4 ㎏ 많았다. 3. 건강상태는 지리산 면양이 학교면양보다 건강하였다. 4. 사료작물의 일반적인 생육상황을 관찰할 때 지리산 학교의 성적에 큰 차이가 없었다. 이상 본 예비조사의 결과로서 지리산 면양 사육과 사료작물 재배에 의한 개량초지 조성에 대한 연구가 가능함을 인정할 수 있었다. 따라서 70년도에 다시 면양 14두, 사료작물 6종을 도입 계속 시험중인 바 좋은 성적을 나타내고 있다. This paper is the report of the second step or the three year plan on the development of sheep range in Mt. Chiri to Elarify the adequate seeding period and suitable cutting frequency of the forage grass. This experimental land was located at 600~900 m above the sea level in Mt. Chiri. The results obtained were summarized as follows; 1. Early of August was exceedingly suitable seeding time and seeding time was later, germination and growth of grasses were worse. It was induced the worst germination and growth to seeding the grasses seed after medium of October. 2. The native grasses could be cut five times a year, the native grasses were cut at 6 ㎝ hight above land surface at first time before the grasses were rough and next time were cut with 30 ㎝ length at 6 ㎝ hight above land surface. 3. One cutting period was 17 days to 23 days, mean was 20 days. 4. Grass length of cutting grass was below or above 30 ㎝ length. According to above results, suitable seeding time of grass was early about a month in this experimental district more than an open field in Mt. Chiri district. Above 5 times cutting grass was more profitable than one cutting or grazing under natural condition because the native grasses could be cut five times in a year. Toda shina (Arunctinella hirta), Miscanthus puprascens, Abrrasusuxi (Ecoilo pus cotulifer) and Various grass species wer growing in this experimental field, and they were ligniflcated after September. Therefore, it is profitable for pasture management that the grass land is devidec. 10 plot, and sheep are fed for three days in a plot during May to October.

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