배지의 무기염류와 sucrose 농도가 감자의 기내 shoot 증식과 기내경 삽목묘의 생존율에 미치는 영향

김희곤,임순희,안장순,송창길,박미경,강봉균 全南大學校 農業科學技術硏究所 1999 農業科學技術硏究 Vol.34 No.-

감자의 virus-free 기내경 삽목묘의 효율적인 대량 생산 체계의 확립을 위하여 생장점 배양으로 얻어진 감자의 기내경의 증식과 기내경의 순화삽목을 실시한 결과는 다음과 같다. 초대배양에서는 염류농도와 sucrose 농도가 높을수록 양호하였다. 즉, MS나 2MS에 sucrose를 6% 첨가한 배지에서 튼튼한 기내경이 생산되었다. 계대배양에서는 sucrose 농도가 높을수록 줄기의 길이는 단축되고 굵기는 커졌으며 생체중은 염류농도와 관계없이 3%의 sucrose가 첨가된 배지에서 무거웠다. 이들 유식물체의 경절을 삽목한 결과 계대배양 배지의 sucrose농도가 6%인 배지에서 생존율이 높은 경향이었다. In order to establish a mass propagation system of potato planting material, in vitro multiplication of virus-free shoot originated from meristem culture and sucrose concentrations on survival of cutting of the in vitro stem tried with various media containing different levels of MS salts(0.5x, 1x and 2x) and sucrose(1.0, 3.0, 6.0%), and the effects of MS salts elements were evaluated. Higher level of sucrose in the initial culture media favored the shoot growth, that is, both of 1MS and 2MS media containing 6.0% sugar produced stouter shoots. Higher level of sucrose in the subculture media also favored the development of compact stout shoots, but biomass production in terms of fresh weight was high on the media containing 3.0%sucrose, regardless of MS salts concentration. The survival rate of cuttings made of the in vitro stem segments tended to be higher in those obtained from subculture media containg 6.0%sucrose.

동기 정류기를 이용한 클램프 모드 포워드 영전압 스위칭 다중 공진형 컨버터

안강순,김희준 漢陽大學校 工學技術硏究所 1996 工學技術論文集 Vol.5 No.1

The Clamp Mode(CM) Forward Zero Voltage Switching Multi Resonant Converter(ZVS-MRC) with self-driven synchronous rectifier is studied. The loss at the synchronous rectification stage of the converter is analyzed using MOSFET piecewise linear model and is compared with the loss at the conventional schottky diode rectification stage of the converter. From the results of the analysis, it is known that the use of MOSFETS as a synchronous rectifier reduces the loss at the rectification stage over the whole load range comparing the use of schottky diodes as a conventional rectifier in the converter. In order to verify the validity of the analysis, we have built a 33W(3.3V/10A) CM Forward ZVS-MRC with self-driven synchronous rectifier, in which switching frequency is 1MHz, and tested. From the experimental results, it is known that the synchronous rectification achieved about IW improvement in the loss at the rectification stage and about 3% in the efficiency at the converter as compared with the conventional schottky diode rectification.

사람의 혈관 내피세포에 대한 Rickettsia typhi의 감염

안욱수,이강순,송호연 순천향대학교 1994 논문집 Vol.17 No.4

R. typhi, the etiologic agent of murine typhus, has known to cause fever, headache, maculopapular rash and vasculitis of small blood vessel. The skin rash and vasculitis are thought to be the results of endothelial cell injury from the infection with R. typhi in vivo. R. typhi showed ability to cause cellular injury of cultured human endothelial cells. The endothelial cells used in this experiment wee obtained by collagenase treatment of human umbilical cord veins. These cells were conformed to be endothelial cell by the presence of von Willebrand factor through the immunofluorescent antibody technique and Weibel-Palade bodies under the electron microscopy. Ultrastructural study revealed that there were no evidences of entry and/or escape from endothelial cells of R. typhi in 24 hours through 48 hours after infection. On the contrary, numerous particles implicating R. typhi were observed in large vacuole within endothelial cells at 48 hours after inoculations. Estimating the severe injury of endothelial cells by infection of R. typhi, the endothelial cells seems to be the primary target cells in human disease caused by R. typhi infection.

실루엣터에 의한 男子高等學生의 體型分析 : 바지패턴을 중심으로

姜順熙,安英實 漢陽大學校 韓國生活科學硏究所 1989 韓國 生活 科學 硏究 Vol.- No.7

The purpose of this study was to provide the highly adaptable materials for the production of slacks pattern of high school boys. Somatotype analysed and classified by the measure and form of the lower half of body. 205 boys of high school in Seoul between the age of 15 and 18 were examined by the Silhouetter Photography, the indirect measurement of their somatotype. 64 items-41 in measurement,6 in calculated values and 17 in physical index were studied in this research and the method of Mean, Standard variation, Pearson's correlation coefficients, factor analysis, and One - way analysis of variation were uesd for statistical analysis. The results of this study are as follows ; 1.It was founded in 4items only that the lower half of body of high school boys increased with age. But there was no significant difference in other items. As a result somatotype were more adequately examined by the posture and characteristic of body rather than by age for the highly adaptable production of slacks patterns. 2.In the proportion of the lower half of body the waist line was lower and more distinguishable and crotch depth was shorter by age. 3.Waist girth, hip girth, stature, finished length-pants, crotch depth and hip length, glutea angle, abdominis media angle, hip side slope wich were sampled as major parts of the lower half of body by the factor analysis. Especially, the angle item was considered as an standard item in slacks patterns seperately. 4.According to the classification of posture and characteristic of the lower half of body, The Forward Somatotype was the most in percentage and was followed by the standard Somatotype, the next was the Turning over Somatotype and the Forward -Turning over Somatotype as the least. The Standard Somatotype was employeed as the basis of comparison each characteristics of Somatotype, the following results were found. 1) Compared to the Standard Somatotype, a rear hip part in the Forward Somatotype was more protruded and a lower abdomen was more flat. 2) Compared to the Standard, a rear hip part in the Turning over Somatotype was more flat and a lower abdomen was more protruded and its measurement was the least of 4 Somatotypes. 3) Compared to the Standard Somatotype, both lower abdomen and rear hip part in the Forward-Turning over Somatotype were more protruded and its measurement was the most of 4 Somatotypes. 5. The modification of slacks patterns by each characteristic of somatotype was as follows ; 1) Compared to the Standard Somatotype, the front center line of front in the Forward Somatotype should be moved 2.3˚ outward and the back center line of back also moved 1.8˚ to the slacks center line and crotch depth be 1cm longer. 2) Compared to the Standard Somatotype, the front center line of front in the Turning over Somatotype should be moved 5˚ to the slacks center line and the back center line of back be 0.7˚ outward. 3) Compared to the Standard Somatotype, the front center line and the back center line should be moved 3.6˚ and 2.3˚ respectively to the stacks center line, and the side line of both front and back be also let out 3.6˚ and 2.3˚ crotch depth, finished length-pants, hip part and thigh part of the lower crotch should be let out.

긴 맛조개 배지에서의 세균 증식

안무영,고광균,이강순 순천향대학교 1992 논문집 Vol.15 No.2

A new plating medium from the extract of Solen gouldi has been developed as alternative to MacConkey agar for the isolation of Shigella. The new medium was tested for the growth of Shigella, Salmonella E. coli, Proteus, Vibrio, Pseudomonas, Staphylococcus and their ability form colonies, and that was compared with MacConkey and Brain Heart Infusion agar media. The following results were obtained. 1. Shigella dysenteriae and Escherichia coli grow best as large colonies on Solen agar medium. 2. Salmonella and Proteus grow well on Solen agar and Brain Heart Infusion agar but MacConkey agar was inhibited. 3. Vibrio parahaemolyticus and Vibric vulnificus was inhibited on Solen agar than thiosulfate-citrate-bilesalt-sucrose agar. 4. The growth of Staphylococcus aureus was highly inhibited on Solen agar media.

홍국균의 최적배양조건에 관한 연구

정순택,임종환,박양균,황금택,박현진,안찬영,강성국,문길만 木浦大學校 工業技術硏究所 1994 工業技術硏究誌 Vol.4 No.-

Cell growth and pigment productivity of Monascus anka KCCM 11832 and Monascus sp. has isolated from the Korean Maeju(soybean koji) were determined for effect of culture medium composition and incubation conditions. Increase of NH₄NO₃, and KH₂PO₄ concentration as mineral source promoted mycelium growth, and the highest cell growth was showed in the medium with 0.05% KH₂PO₄ when C/N ratio is 20:1, but pigment production was significantly inhibited at higher concentration than this level. Cell growth and pigment production in porato dextrose medium were higher than those in czapeck-dox broth and malt extract medium. In terms of temperature, the highest cell growth was showed at 34℃, but pigment productivity was the highest at 26℃.

개방병동과 폐쇄병동에 입원한 정신분열병 환자에서 증상 호전도의 비교

박순영,강진상,윤보현,배안 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.6

본 연구는 입원된 정신분열병 환자의 초기 치료에서 개방병동과 폐쇄병동으로 구분된 치료환경의 차이가 증상의 호전에 미치는 영향을 비교하였다. 국립나주정신병원에 입원한 정신분열병 환자 40명(개방병동 20명, 폐쇄병동 20명)을 대상으로 하였다. 정신병리의 평가는 BPRS 의 총점과 사고, 편집, 위축-지연, 불안-우울 및 기타척도로 구분하여 비교하였으며 PA-NSS는 양성증후군 및 음성증후군 척도를 이용하였다. 분석방법은 입원당시에 평가한 점수를 기저치로 하여, 입원후 2부, 4주, 8주에 평가한 점수와의 차이를 t검증과 공변량분석으로 두군간에 비교하였다. 결과는 다음과 같다. 1) 개방병동에 입원하는 환자들은 자의로 입원하는 경우가 많았으며, 이전의 입원이 개방병동인 경우가 많았고, 또한 과거에 입원했던 기간이 유의하게 적었다(p<.05). 2) BPRS의 총점에서 개방병동군이 폐쇄병동군에 비해 입원후 2주에서 유의하게 감소하였다(p<.05). BPRS의 위축-지연척도에서 개방병동군이 폐쇄병동군에 비해 입원후 2주(p<.01)와 4주(p<.05)에 유의하게 감소하였다. 3) PANSS의 음성증후군 척도에서 개방병동군이 폐쇄병동군에 비해 입원후 2주(p<.05)와 4주(p<.05)에서 유의하게 감소하였다. 이상의 결과로 개방병동의 치료환경이 정신분열병 환자의 입원 초기에 치료효과가 있음을 확인하였다. 또한 장기 입원환자에서 증가되는 음성증상의 예방을 위해 자율적이고 개방된 병실환경이 필요할 것으로 생각된다. Object: The purpose of this study was to evaluate the effects of the therapeutic environment, divided into the open and closed wards, to treat the acute phase of chronic schizophrenic patients. Method : Forty patients(20 were in the open ward and the others were in the closed ward) who met DSM-Ⅳ criteria schizophrenic and whose onset of illness were more than 2 years, entered the study. To assess the psychotic symptoms, Brief Psychiatric Rating Scales(BPRS) and Positive and Negative Syndrome Scales(PANSS) were done at admission(baseline value), and at the weeks 2, 4 and 8 after admission. Mean changes from baseline were compared at each time point by using Student's t-test and ANCOVA. Results : All patients tended to be improved on BPRS and PANSS during the test period. The total scores of BPRS and withdrawal-retardatation subscale of the open ward group significnatly decreased than those of the closed ward group at weeks 2, weeks 2 and 4 after admission, respectively. The open ward group was more improved on the negative syndrome scale of PANSS than those of the closed ward group at 2 and 4 weeks after admission. Conclusion : The open ward group showed more improvement on the negative symptoms of schizophrenia in the initial period of hospitalization. This result may suggest that the therapeutic environment of the open ward is strongly recommended to prevent regressive tendencies that are common in chronic hospitalized patients.

18개월 여아에서의 아동 학대

홍강의,장경준,문형로,안동현,손세정,박순미 大韓神經精神醫學會 1988 신경정신의학 Vol.27 No.2

A child abuse case of an 18 month-old baby girl with multiple fractures is reported. A comprehensive psychiatric and pediatric diagnostic work-up was carried out, and psychodynamic and family dynamic issues were presented in detail. A therapeutic intervention by pediatric-psychiatric team was attempted, but thwarted by the lack of father's cooperation. It is suggested that child abuse should be considered a major medical social problem in Korea too.

고탁도시 DAF 정수장의 운영 및 진단

권순범,안효원,강준구,손병용 대한상하수도학회 2004 상하수도학회지 Vol.18 No.2

DAF process has been designed considering raw water quality characteristics in Korea. Although direct filtration is usually operated, DAF is operated when the freshwater blooms occur or raw water turbidity become high. Pre-sedimentation is prepared in case when raw water turbidity is very high by rainstorms. A main feature of this plant is that the operation mode can be changed (controlled) based on the characteristics of raw water to optimize the effluent quality and the operation costs. Treatment capacity (surface loading rate) and efficiency of DAF was found to be better than conventional sedimentation process. Moreover, lowdensity particles (algae and alum flocs) are easily separated while it is difficult to remove in sedimentation. One of the main concerns in adoption of DAF (Dissolved-Air-Rotation) process is a high raw water turbidity problem. That is, DAF is not adequate for raw water, which is more turbid than 100MU. In order to avoid this problem, pre-sedimentation basins are prepared in OAF plant to decrease the turbidity of DAF influent. For simulation of the actual operation, bench and full-scale tests were performed for highly turbid water conditions. Consequently, DAF process coupled with sedimentation is suggested that pre-sedimentation with optimum coagulation prior to DAF would be appropriate.

아시아 12개국의 응급의학 실태에 대한 연구 조사

정제명,왕순주,안무업,박재형,유기철,박준석,강재구,제프리 아놀드 대한응급의학회 1999 대한응급의학회지 Vol.10 No.4

Background : To assess the current level of development of emergency medicine (EM) systems in Asia. Method : Survey of EM professionals from 12 Asian countries during a 90-day period from August to November 1998. 12 EM professionals from 12 Asian countries completed the survey. All participants were physicians. 7 participants (58%) gave presentations at an international EM conference during the study period. Respondents completed a 103 question questionnaire about the status of EM specialty, academic, patient care, information and management systems and the factors influencing the future of EM in their countries. Results : 92% of respondents stated that their countries have hospital-based emergency departments (ED). More than 80% of respondents reported that their countries have EMS systems and ED systems for trauma care and patient transfer. More than 70% stated that their countries have national EM organizations, EM research, national EMS activation phone numbers, ED systems for pediatric emergency care, emergency physician (EP) training in ACLS and ATLS and peer review. More than 60% reported official recognition of EM as an independent specialty status, ED triage systems and systems for customer service. More than 50% reported EM residency training programs, EM journals and EP ability to perform rapid sequence intubation (RSI). 50% reported EP ability to perform thrombolysis for acute MI and 33% reported EP ultrasonography. 92% felt that a lack of funding posed a moderate or great obstacle to the future development of EM in their countries. Conclusions : Many essential systems of EM now exist throughout Asia. In the systems of administration and emergency medical information in many countries, there are some parts to be developed further.