IEEE 전력부문 총회 참관기

박종배,신중린 건국대학교 산업기술연구원 2005 건국기술연구논문지 Vol.30 No.-

The authors have participated the IEEE Power System Society General Meeting held in Denver, USA from June 6 to June 10 2004 to present two papers and to review the up-to-date industrial technology development. The meeting is considered as the one of the most important conferences in power system sector. The recent major issues in power system sector are observed as the power system restructuring, power system economics, hydrogen economics, power system blackouts, and power line comminications. We have got many ideas for future research topics and the research trends of the major institute.

Tenax-GC를 利用한 大豆乳와 醱酵大豆乳의 風味成分 分析

愼重燁,李瑞九,金顯五,朴啓仁 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

Soy milk prepared from soy protein isolate and soy milk fermented with Lactobacillus acidophilus were adsorbed and desorbed by using Tenax-GC method and analyzed by Gas Chromatograph. It was found that this techingue was very efficient when the analytical results was expressed by the ratis of the peak area of each volatile to that of a fixed concentration of internal standard. Acetaldehyde, ethyl vinyl ketone, n-hexanal, n-hexanol, and 1 -octen-3-ol existed in soy milk. The content of acetaldehyde and diacetyl was increased while that of n-hexanal was reduced by lactic fermentation.

산성광산배수 및 증발잔류광물에 대한 지구화학적 연구

박천영,정연중,박신숙,김성구 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.1

This study investigated geochemical characteristics of acid mine drainage(AMD) discharged from the abandoned coal mine and gold mine. Water sample of acid mine drainage were collected from 9 locations at Hwasun, Kwangyang, Chonam, Taback and Sangdong area. The yellowish and brown color of evaporated material was prepared by air dry for 9 acid water samples during 20 days in the laboratory As the 9 acid water samples become fully drying, the concentration of this water become progressively more concentrated and its may be eventually reached saturation with respect to either gypsum or ferrohexahydrite. The value of density for acid mine drainage increase with increasing TDS and EC values. The value of activity for acid mine drainage increase with those real ion concentration. The x-ray powder diffraction studies identified that the evaporated materials were gypsum, ferrohexahydrite and kaolinite. Diagnostic peaks used for identification of gypsum were the 7.62, 4.28, 3.80, 3.07, 2.88, 2.68, 2.22, 1.90 and 1.62Å peaks. Diffraction peaks at 6.00, 5.48, 5.13, 4.89, 4.40, 3.46, 3.20, 3.03, 2.97, 2.94, 2.79, 2.27 2.09Å may indicate ferrohexahydrite. In the SEM and EDS analysis, the crystals of acicular and columnar in the evaporated materials probably shown the gypsum.

초고층건축물의 공공성 증진을 위한 계획방향에 관한 연구

신중진,임창복,류훈,박종현 대한건축학회 2004 대한건축학회논문집 Vol.20 No.10

The purpose of this study is to suggest the planning strategy of super tall building for publicness improvement in the points of urban, local and environmental level As a result is summarized with 8 theme, content is following as First, skyscrapers plan to consider urban grad and local character Second, urban landscape plan to promote city identity and image Third, context plan to consider local history and culture Fifth, pedestrian network plan to link near site and district Sixth, pedestrian environment plan to promote physical and sensibility Seventh, the security of residential environment and insurance of residential amenity In last, consideration to prevent corruption of surrounding local environment

외상성 십이지장 손상

박상균,강중신,손수상 啓明大學校 醫科大學 1993 계명의대학술지 Vol.12 No.2

저자들은 1985 년부터 만 6년간 계명의대 외과학교실에서 체험한 외상성 십이지장 손상 환자 20례를 중심으로 임상적으로 관찰 분석한 결과 다음가 같은 결론을 얻었다. 21~40세가 11례(55%)로 가장 많았고, 평균연령은 35.5세 남녀비는 19:1이었다. 손상의 원인으로는 둔상이 18례(90%)였으며 관통상이 2례였고 둔상의 원인으로는 교통사고, 추락 및 폭력사고 순이었다. 손상부위는 제 2부가 15례로 가장 많았고 제3부, 제1부, 제4부 순이었다. 진단 방법으로는 단순 X-선 검사, 복부 전산화 단층촬영 및 gastrografin을 사용한 상부소화관 촬영이 도움이 되었다. Lucas 분류법에 의한 손상분류시 II형이 9례(45%)로 가장 많았다. 17례(85%)에서 총 34가지의 복강내 장기의 동반 수상이 있었으며 췌장, 신장이나 요관, 간장 및 후복막강내 혈종순이었다. 19례에서 개복하여 배액술을 시행하였고 단순봉합술이 12례(60%)로 가장 많았다. 8례(42%)에서 13가지의 술후 합병증이 발생했으며 폐장합병증이 4례로 가장 많았다. 사망은 2예(10%)였으며 사망원인은 다발성 장기손상에 의한 출혈성 쇼크 1례와 패혈증 및 다발성 장기부전 1례였다. Traumatic duodenal injury is a relatively rare surgical condition and remains as one of the most challenging problems to treat until now because of high morbidity and mortality. A retrospective analysis of 20 consecutive patients who sustained traumatic duodenal injury diagnosed by operation of radiologic examination during the 6 years from January, 1985 to Decomber, 1991 at department of surgery, Keimung University School of Medicine was reviewed. ·The age incidence was variable but it occurred most frequntly 3th & 4th decades and the sex incidence was 19:1 in favor of male. ·The majority of injury(90%) was blunt abdominal trauma ·Nineteen patients(95%) underwent celiotomy and only 3 case(15%) had an isolated duodenal injury. ·In terms of location of injured duodenum, 2nd portion was injured most frequently and followed by 3rd, 1st and 4th in order of frequency. ·The severity of injury was classified to the Lucas classification, and their surgical managements varied from simple drainage to combined pancreaticoduodenectomy. ·The postoperative complications were pulmonary complications (4), wound infection (3), duodenal fistula (2), intraabdominal abscess (2), wound disruption (1) and stress ulcer bleeding (1), in order of frequency. ·2 cases were died because of massive bleeding and sepsis with multiple organ failure.

Lactobacilli의 Lysine Analog 내성 변이주에 의한 Lysine 생산

신중엽,박계인,이종대 慶熙大學校 1985 論文集 Vol.14 No.-

S-2-Aminoethyl L-Cysteine(ABC), and analong of L-lysine, significantly inhibited the growth of wild type strains of Lactobacillus acidophilus IFO 3205, Lactobacillus acidophilus IFO 13952, Lactobacillus bulgaricus ATCC11842, and Lactobacillus bulgaricus IFO 353g. The growth inhibition of these strains depended on AEC concentration. In presence of 10ug/ml of AEC concentration the growth of these strains was inhibited completely. AEC resistant mutants were induced by N-methyl-N-nitro-N-nitrosoguanidine(NTG) and Ethylmethane sulfonate(EMS) treatment. Almost all resistant mutants produced lysine. Lysine productivity of mutants had no insignificant relation to method of mutagen treatment. Also lysing productivity of mutants had nothing to do with concentration of AEC. Lysince productivity of lysine analog resistant mutants obtained from first mutation was increased by further mutation. Among the AEC resistant mutants, LaNA-412 was selected as lysine producing mutant. LaNA-412 produced 103 ug/ml L-lysine.

韓國大豆食品의 Oligo糖 消長에 關한 硏究

朴啓仁,愼重燁,金鍾國 慶熙大學校 1983 論文集 Vol.12 No.-

Three Korean variety of soybeans and five ordinary fermented soybean pastes collected from 5 districts were studied for oligosaccharides. Oligosaccharides in soybean (Bong Eui Variety), meju, and fermented soybean pastes were determined. The changes of oligosaccharides during the meju preparation were investigated. And then oligosaccharides hydrolyzing microorganism was isolated and indentified. The results obtained are as follows: 1) All of the three Korean variety of soybeans were detected for sucrose, raffinose, and stachyose. In case of five ordinary fermented soybean pastes, three samples collected from Seoul, Busan, and Deagu were detected for sucrose, the only one sample collected from Busan was detected for traces of raffinose and stachyose, and the rest was not detected for these oligosaccharides. 2) Bong Eui variety of soybean contained 42.3㎎/g of sucrose, 12.5㎎/g of raffinese, and 32.5㎎/g of stachyose. Meju contained 2.48㎎/g of sucrose, 0.01㎎/g of raffinose, and 0.03㎎/g of stachyose. And then fermented soybean paste contained 0.25㎎/g of sucrose. 3) As the result of steeping and cooking the soybean, the contents of sucrose, raffinose, and stachyose in soybean decreased to 66.9%, 72% and 69.5% respectively. 4) Oligosaccharides in cooked soybean decreased a little at early stage of fermentation and almost disappeared except sucrose in 40 days. 5) Oligosaccharides hydrolyzing bacteria, strain B-12 was isolated from meju and identified as Bacillus up.

黑麴菌에 依한 고구마粕 구연산 醱酵에 關한 硏究

朴啓仁,李漢昌,愼重燁 慶熙大學校 1980 論文集 Vol.10 No.-

The 229 strains of black Aspergillus sp. producing citric acid were isolated from soil. Among them, the strains KTR-81 and KTR-91 were found to be superior for citric acid production. Their basic cultural conditions as well as high citric acid producible conditions from the liquefied sweet potato cake which is a byproduct obtained from waste material in the production of sweet potato starch, were investigated, and the results obtained are as follows: 1. Those two strains produced citric acid to maximum 63.0-63.5% from glucose when the liquefied sweet potato cake media had 16% in its total sugar concentration. The nutritional conditions added to the media were 0.15%, 0.06% and 0.03% of urea, mixture of equal amount KH_2PO_4 and K_2HPO_4, and MgSO_4·7H_2, respectively. Some hindrances were likely to be appeared in the production of critic acid by the change of the amount of the nutrients as shown above. 2. Since the oxalic acid-forming activities are relatively dull, those two strains may be available for the citric acid fermentation industry.

무기염류의 첨가가 김치성분의 변화에 미치는 영향

박상현,신중엽,박계인 경희대학교 부설 식량자원개발연구소 1987 硏究論文集 Vol.8 No.-

This study was to investigate the effects of addition of inorganic salts (KCl, MgCl_(2).6H_(2)O, CaCl_(2), 2H_(2)O) on the change of kimchi components. To this end, kimchi was prepared by adding inorganic salts and fermented at low (6-10℃) and high (20-22℃) temperatures. pH, acidity and pectic substances of kimchi were analyzed. During fermentation, pH, AIS (Alcohol insoluble solid), and HCl soluble pectin (HClSP) were decreased, while acidity and hot water soluble pectin (HWSP) were increased. These changes were more remarkable at high temperature than low temperature. The addition of inorganic salts in kimchi preparation influenced the changes of pH, acidity, HWSP, and HClSP at both low and high temperatures. The changes of pH and acidity were more remarkable in kimchi, prepared with addition of MgCl_(2) .6H_(2)O or CaCl_(2) .2H_(2)O than KCl. The changes of HWSP and HClSP were more marked in kimchi, which was added with KCl than MgCl_(2). 6H_(2)O or CaCl_(2) .2H_(2)O

23년간 서울 지역 초˙중˙고등학생의 비만 추이

박영신,이동환,최중명,강윤주,김종희 대한소아과학회 2004 小兒科 Vol.47 No.3