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.

캔터키 블루그래스에 의한 잔디 조성 기술 개발

이재필,조용인,서한용,이상재,김태준,한인송,김두환 建國大學校附設農業資源開發硏究所 2001 農資源開發論集 Vol.23 No.-

Seed sowing is the major method for the establishment of cool-season grasses at the soccer fields, golf courses, etc. Germination speed of kentucky bluegrass(Poa prantensis L.: KB) is much slower than the other cool-season grasses. This study was conducted to solve the problems at the early stage of establishment with KB. The best priming conditions of KB, drying method after soaking in the water, and covering materials will be selected. To reduce irrigation frequency and quantity for seed germination, seeds of KB were exposed to the different soaking temperature(4, 20, 25, 30℃). soaking durations(3, 6, 10, 13, 19, 23 days), storage periods(3, 6, 9 days), storage humidities(30, 50, 100%), shading rate(0, 50, 100%), drying methods(dry in the air, heating, mix soaked seed with profile=1:2), and covering materials(70% shade net, fiber net). The optimum soaking temperature and duration for the seed priming of KB were 20℃ and 10 days, respectively. The optimum storage period and humidity were 3 days and 100%, respectively, Under 50% shading, germination rate was the highest. In drying method after soaking, mixture of seeds and profile(1:2) was optimum for sowing. Using the thin fiber net as covering material after sowing was good for not moving seeds and improved germination speed and rate.

대구, 경북지역 대학생의 식사행동 및 일본음식에 대한 인상 및 기호도 조사 연구

한재숙,이연정,최석현,최수근,권상용,최영희 동아시아식생활학회 2004 동아시아식생활학회지 Vol.14 No.1

본 연구는 대구, 경북지역의 대학생(570명)을 대상으로 식사내용, 식사관습, 식사예절, 일본음식에 대한 인상과 시식경험 및 기호도를 조사한 것으로 그 분석결과를 요약하면 다음과 같다. 1. 음식은 항상 일인분씩 담는다’의 경우는 전체응답자의 15.5%에 불과하였고, ‘음식을 큰 접시에 모아서 담는다’의 경우는 ‘가끔 한다’가 44.8%, ‘항상 한다’가 35.8%로 나타나 큰 접시에 모아서 담는 가정이 많았다. ‘저녁은 가끔 가족이 함께 모여서 먹는다’가 59.9%로 가장 많았고, ‘항상 가족이 모여 같은 음식을 먹는다’는 끼니는 아침이 42.3%, 저녁이 23.3%, 점심이 3%로 나타나 아침에 가족이 모여 같은 음식을 먹는 경우가 가장 많았다. 2. ‘식사시 가족의 자리가 정해져 있다’고 한 경우는 전체응답자의 53.5%였고, ‘가족이 모여 식사할 경우, 연장자가 수저를 들기 전에는 먹지 않는다’는 전체의 56.4%였으며, ‘가장에게는 음식의 양이나 수가 많다’는 30.9%였다. 3. 식사예절에 대해 가장 자주 주의를 받는 것은 ‘TV를 보지 않고 먹기’(13.4%), 남기지 않고 먹기(11.5%), ‘수저사용법’(8.0%)의 순으로 나타났다. 반면 ‘식기 부딪히는 소리’(76.9%), ‘입 다물고 먹기’(76.6%), ‘씹는 소리’(74.6%), ‘밥 먹는 모양’(71.4%), ‘수저 사용법’(69.7%)등은 전체응답자의 70% 이상이 ‘주의를 받지 않는다’고 하였다. 4. 음식 만들기에 대한 선호도는 5점 만점에 3.48점으로‘보통 이상’으로 나타났고 국가별 요리에 대한 기호도는 한국요리(4.39점)가 가장 높았고, 그 다음이 중국요리 (3.76점), 이태리요리(3.45점), 일본요리(3.32점) 순이었으며 프랑스요리(3.16점)가 가장 낮은 기호도를 보였다. 음식 만드는 빈도는 한달에 1∼2회 정도로 나타나 대학 생들이 직접 음식을 만드는 빈도는 매우 낮음을 알 수 있었다. 5. 일본 방문경험은 조사대상자의 93.8%가 없었으며, 그중 92.6%가 일본방문을 희망하였고 일본음식에 대한 이미지는 ‘가격이 비싸다’(4.15점), ‘장식이 아름답다’(4.05점), ‘색채가 예쁘다’(3.98점) 등은 높은 점수를 보인 반면에 ‘맵다’(2.21점), ‘기름기가 많다'(2.51점), ’깊은 맛이 있다‘(2.56점) 등은 낮은 점수를 보였다. 6. 일본음식 중 가장 높은 시식경험을 가진 것은 우동(95.3%)이었고 그 다음은 스시(93.1%), 덴뿌라(81.9%)순 이었고, 반면에 니쿠자가(6.4%), 오차즈께(9.3%), 오코 노미야끼(11.1%), 다코야끼(16.0%) 등은 매우 낮은 시식경험을 보였다. 7. 일본음식에 대한 기호도는 우동(3.98점), 스시(3.85점), 덴뿌라(3.69점), 소바(3.43점), 스키야끼(3.12점)는 대체로 높은 기호도를 나타낸 반면 낫또(2.68점), 오차즈께(2.76점), 오코노미야끼(2.87점), 미소시루(2.88점), 다코 야끼(2.88점) 등은 낮은 기호도를 보였다. 이상의 연구결과로 변모해 가는 우리전통 식사예절의 동향 파악이 가능하였고 가족간의 화목과 건강한 사회를 이루기 위한 가족 단란의 식사지침이 요구되었다. 한편 일본음식중에는 우동과 스시가 한국대학생들에게 가장 인기가 높은 음식임을 알 수 있었고 대부분의 일본요리에 대해 장식이 예쁘고 색채가 아름답지만 값이 비싸다는 이미지를 가지고 있어서 가격을 좀 더 낮춘다면 그 이용이 더욱 늘어날 것으로 기대되었다. 또한 낫또, 오차즈께, 오코노미야끼 등 이용도가 낮은 음식에 대해서는 한국인의 입맛에 맞는 요리법을 가미한다면 대중화가 가능하리라고 여겨진다. This study was conducted to investigate the dietary behavior and image and preference of Japanese foods. The Subjects were consisted of 570 university students(243 males and 327 females) in Daegu and Kyungbuk area, Korea. The students responses to the 10 questions about image of Japanese foods were also measured on 5 point Likert scale. Data were presented by using frequency, percentage, chi-square test and T-test. The results of this study were as follows: (1) On the eating habits, 'the whole family has breakfast together with same foods everyday' scored high as 42.3% and 'foods put in a big platter by gathering everyday' as 35.8%. (2) About the eating customs, 53.5% of the subjects responded that the seat was fixed at meal time, 56.4% didn't start to eat before the patriarch started a meal and 30.9% responded that the head of a family had more foods in number and quantity. (3) On the table manners, 13.4% of the subjects were scolded about 'watching TV on eating', 11.5% about 'making left-over foods', 8.0% about 'misuse of spoon and chopsticks'. (4) The preferred ethnic foods by University students was in other of Korean, Chinese, Italian, Japanese and French foods. (5) Among subjects, 93.8% had no experience of visiting Japan and 92.6% wanted to visit Japan. Images on the Japanese foods were 'the price is too expensive' (mean 4.15) and 'the decoration is wonderful'(mean 4.05). But the subjects did not think Japanese foods as 'hot'(mean 2.21) and 'greasy'(mean 2.51). (6) The favorite Japanese food of subjects was Udon(mean 3.98), Sushi(mean 3.85) and Tempura(mean 3.69). So Udon turned out to be the most popular Japanese foods by university students in Daegu and Kyungbuk area, Korea. But they did not prefer Natto(mean 2.68), Ochazuke(mean 2.76), Okonomiyaki(mean 2.87) and Misosirn and did not eat. From the above results, Korean university students preferred Udon to Natto among Japanese traditional foods, and they estimated Japanese foods as 'too expensive'. Therefore, lowering the price and developing the cooking method for Korean taste were needed to increase the intake of Japanese traditional foods by Korean university students and.

바렉터 다이오드를 이용한 가변 BPF 설계 및 제작

한재권,이행수,홍성용 충남대학교 산업기술연구소 2005 산업기술연구논문집 Vol.20 No.1

This paper presents a tunable filter that can be used in front stage of UWB receiver operating under 2GHz frequency range. It presents the optimum design method of comb-line structure tunable filter keeping the fixed bandwidth and attenuation characteristic in the tunable frequency range. This filter is implemented by applying a tunable capacitor, obtained by reverse-biased varactor diode, to a capacitor used in SIR structure. As a result of tunable filter measurement, the center frequency was little moved down. Its bandwidth was almost corresponded with the result of a simulation but did not meet the given 100MHz bandwidth.

형질전환 조류 생산에 관한 연구

한재용 서울대학교 농업개발연구소 1999 농업생명과학연구 Vol.3 No.-

Embryonic germ (EG) cell lines established from primordial germ cells(PGCs) are undifferentiated and pluripotent stem cells. To date, EG cells with proven germ-line transmission have been completely established only in the mouse with embryonic stem (ES) cells. PGCs from 5.5-day-old(stage 28) chicken embryonic gonads were isolated and established a putative chicken EG cell line with EG culture medium supplemented with several growth factors. These cells grew continuously for 10 passages (4 months) on a feeder layer of mitotically active chicken embryonic fibroblasts. After several passages, these cells were characterized by screening with the Periodic acid-Shiff's reaction, anti-SSEA-1 antibody, and a proliferation assay. The chicken EG cells maintained characteristics of gonadal PGCs and undifferentiated stem cells. When cultured in suspension, the chicken EG cells successfully formed an embryoid body and differentiated into a variety of cell types. The chicken EG cells were injected into stage X blastodermal layer and produced chimeric chickens with various differentiated tissues derived from the EG cells. Chicken EG cells will be useful for the production of transgenic chickens and for studies of germ cell differentiation and genomic imprinting. Also, the production of transgenic chicken using these cells may be useful tools for improvement of ecionomic traits in livestocks.

수종보익제가 면역세포의 조절 및 Apoptosis에 미치는 영향

한종현,강성용,정현우,오찬호,권진,은재순 대한본초학회 1997 大韓本草學會誌 Vol.12 No.1

The effects of several tonifying prescriptions on the apoptosis of transplanted L1210 cells and the regulation of immune cells in L1210-transplanted mice were studied. Sa-Mul-Tang(SMT), Sa-Kunja-Tang(SKT), Sipjeon-Daebo-Tang(SDT) accelerated the apoptosis of transplanted L1210 cells, and SMT and SKT reduced the mitochondrial transmembrane potential of transplanted L1210 cells. SMT promoted the proliferation of thymocytes and splenocytes in L1210-transplanted mice. Whereas SMT increased CD8+ T_c/T_S cell, Bojung-Ikki-Tang(BIT) decreased CD4+ T_H cell population in the thymocytes of L1210-transplanted mice. SMT and SKT increased the lucigenin chemiluminescence from peritoneal macrophage of L1210-transplanted mice. These results indicate that SMT and SKT have an inductive action of apoptosis of transplanted L1210 cells and peritoneal macrophage activation.

터보 차져와 인터쿨러를 장착한 디젤기관의 시뮬레이션 연구

한영출,백두성,류규현,오용석,박만재 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.4

Studies on the turbocharger itself or various aspects generated from turbocharged engine have been made. However, only a few researches have been made on the performance for the natural aspirated engine equipped with the turbocharger and the intercooler. In this study, the performance prediction program based on turbocharger theory is developed for simu-lation which may reduce the cost and the trial-and-error time. The program is verified with the experimental results for 11,000cc diesel engine with the turbocharger and the intercooler. Also, various factors which are invisible in experiment are predicted using this program.

PLD 박막의 물리적 성질

한용진,조봉균,정재훈,이수빈,박해윤,이태기,채희백,홍진수 순천향대학교 기초과학연구소 1998 순천향자연과학연구 논문집 Vol.4 No.2

Thin amorphous carbon films were deposited by a Q-switched Nd;YAG 532nm with beam power density of ?? on the high purity graphite (99.7%). The pressure of vacuum chamber was ?? Torr. In order to estimate the quality of the Pulsed Laser Deposition films one of the most important optical properties, bandgap energy, was characterized by transmission and reflection in the range of the visible, and an optical direct bandgap energy of 2.45eV and indirect bandgap energy 0.36eV were obtained. Surface morphology of amorphous film was investigated by AFM (Atomic Force Microscopy). Its surface roughness is 70nm. Comparing our results with the published values in the literature we have confidence that our films show the good quality for optical properties.

밀도분포법을 이용한 부재의 연결구조 최적화

한석영,유재원,박재용 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

Most engineering products contain more than one component. Failure occurs either at the connection itself or in the component at the point of attachment of the connection in many engineering structures. The allocation and design of connections such as bolts, spot-welds, adhesive etc. usually play an important role in the structure of multi-components. Topology optimization of connection component provides more practical solution in design of multi-component connection system. In this study, a topology optimization based on density distribution approach has been applied to optimal location of fasteners such as T-shape, L-shape and multi-component connection system. From the results, it was verified that the number of iteration was reduced, and the optimal topology was obtained very similarly comparing with ESO method. Therefore, it can be concluded that the density distribution method is very suitable for topology optimization of multi-component structures.

임신 중기 급성 A형 간염의 치료 1예

김미영,문성택,김윤숙,전섭,최승도,선우재근,배동한 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.2

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