A Cytotoxic Component from Angelicae Koreanae Radix against L1210 and HL-60 Cells

Bae, KI-Hawan,Ji, Jong-Myung,Kang, Jong-Seong,Ahn, Byung-Zun The Pharmaceutical Society of Korea 1994 Archives of Pharmacal Research Vol.17 No.1

A cytotoxic sesquiterpene against L1210 and Hl-60 cells was isolated from Angelicae Koreanae Radix (bulk-kang-hwal). The component was identified as bisabolangelone by means of chemical and physical methods. The $ED_{50}$ values of it were $1.20{\;}\mu\textrm{g}/ml$ against L1210 cells and $2.30{\;}\mu\textrm{g}/ml$ against HL-60 cells. Bisabolangelone was found in bulk-kang-hwal but not in kang-hwal.

Analyzing the correlation of Spam Recall and Thesaurus

Kang,Sin-Jae,Kim,Jong-Wan 한국정보기술응용학회 2005 한국정보기술응용학회학술대회 Vol.2005 No.1

발효조를 이용한 Monascus anka의 적색소와 황색소의 생산

강성국,임종환,정순택,김선재 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.6

Monascus anka를 이용하여 천연식용색소를 대량생산하기 위한 방법을 개발하기 위하여 발효조를 이용하여 적색소와 황색소의 색소생산의 최적 배양 조건과 생산된 색소의 색깔 특성을 조사하였다. Monascus anka 적색소와 황색소를 생산하였는데, 이들 색소는 균체내색소와 균체외 색소로 구분되었다. 균체의 적색소(ERP)는 494nm에서, 균체외 황색소(EYP)는 380nm에서, 균체내 적색소(IRP)는 506nm에서 그리고 균체내 황색소(IYP)는 388nm에서 최대 흡광도를 나타냈다. 적색소와 황색소 생산, 색조의 특성 및 균체증식력을 배양 온도, pH, 쌀가루 농도, peptone 농도, magnesium sulfate 농도, 통기량 및 교반속도에 대하여 조사한 결과 적색소 생산력은 30℃, 초기 pH 6.0, 쌀가루 농도 3~5%, peptone 농도 0.05%, magnesium sulfate 농도 0.25%, 통기량 0.1vvm 교반속도 300rpm의 조건에서 최대치를 보였으며, 이때 ERP, EYP, IRP 및 IYP는 각각 A_494nm 0.84, A_380 nm 0.71, A_506 nm 1.18, A_388 nm 1.10, L값은 각각 29.40, 6.44, 34,98, 8.94, a값은 각각 5.76, -1.08, 11.83, -1.55, b값은 각각 18-19, 3.41 27.26, 6.16 그리고 균체량은 7.4 g/l을 보였다. 또한 황색소 생산력은 온도의 경우 적색소 생산을 위한 최적온도 보다 높은 35℃ 부근에서 우수하였으며 초기 pH와 쌀가루 농도는 적색소 생산을 위한 최적조건과 같았고, 질소원과 무기염의 농도가 높을수록 그리고 통기량이 많을수록 황색소 생산력이 우수하였다. 적색소와 황색소 생산을 위한 발효조의 교반속도는 100~300 rpm이 적합하였다. Production of Red and Yellow Pigments from Monascus anda in a Jar Fermenter, Seong-Gook Kang, Jong-Whan Rhim, Soon-Teck Jung^* and Sun-Jae Kim. Department of Food Engineering. Mokpo National University Chonnam, 534-729, Korea - In order to develop the method for mass production of natural food colorant from Monascus anka, optimum cultivation conditions for producing red and yellow pigments by cultivating the mold in a jar fermenter and their color characteristics were investigated. The mold produced red and yellow pigments both intracellularly and extracellularly. These pigments showed unique light absorption characteristics with maximum absorption of 494, 380, 506, and 388 nm for extracellular red pigment (ERP), extracellular yellow pigment (EYP), intracellular red pigment (IRP), and intracellular yellow pigment (IYP), respectively. Optimum conditions for producing red pigments were found to be temperature 30℃, initial pH 6.0, rice powder 3~5%, peptone 0.05%, magnesium sulfate 0.25%, aeration rate 0.1vvm. Optimum temperature for producing yellow pigments was around 35℃ which is higher than that of producing red pigments. The initial pH rice powder concentration for producing yellow pigments were the same as those of producing red pigments. The higher concentration of nitrogen source and inorganic salt, aeration rate, the more the yellow pigments were produced. Them optimum agitation speed was 100~300 rpm for pigment production.

풍력 발전 시스템의 피치제어

강상수,강승균,임종환,허종철 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.1

Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature, control of the angular velocity of the blade is necessary in order to generate high quality electric power. The control of the blade can be divided into the stall regulation type and the pitch control type. The stall regulation type which utilizes an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary, pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated, but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of experiments.

Segregation Charging Behavior of Ultra‑Fine Iron Ore Briquette in Sinter Feed Bed: DEM Analysis

Kang‑Min Kim,Jong‑Ho Bae,Jong‑In Park,Jeong‑Whan Han 대한금속·재료학회 2020 METALS AND MATERIALS International Vol.26 No.8

The sinter–briquette complex firing process which is an effective technology for utilization of low grade ultra-fine ore is amethod for charging sinter feed mixed with briquette made of ultra-fine ore. To uniformly fire briquettes using the excessheat from the lower part of the sinter feed bed, they must be segregated in that region. In this study, the particle propertiesand interaction coefficients of real samples were measured and used for a numerical analysis. Furthermore, a discrete elementmethod simulation was used to investigate the characteristics of the sinter feed and briquette charging process, namelyburden distribution and porosity, by varying the shape and mixing ratio of the briquette. The results showed the while theshape of the briquette did not affect the burden distribution and porosity, the porosity at the lower part of the bed proportionallyincreased with the briquette mixing ratio. Furthermore, it was observed that to achieve optimized heat distribution ofthe bed, the proportion of briquette in the charging mixture should be more than 20%.

풍력 발전 시스템의 피치제어

강상수,강승균,임종환,허종철 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1

Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature, control of the angular velocity of the blade is necessary in order to generate high quality electric power. The control of the blade can be divided into the stall regulation type and the pitch control type. The stall regulation type which utilizes an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary, pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated, but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of experiments.

1998년과 2007년 사이 12∼13세 남녀 청소년의 체격, 골격성숙도, 체력 비교

송종국(Jong Kook Song),채서연(Seo Yeon Chae),채주희(Joo Hee Chae),김현배(Hyun Bae Kim),강효정(Hyo Jung Kang) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34

The purpose of the present investigation was to compare physique, skeletal maturation and physical fitness in Korean adolescents measured between 1998 and 2007. Subjects participated in the study were a total of 473 Korean adolescents aged 12 to 13 years. In 1998, 349 adolescents were selected from a middle school, located in Sungnam city and 124 middle school students aged 12-13, located in Yongin city were participated in 2007. All measurements were conducted by one of the reseachers (Jong-Kook Song) with two different group of investigators between 1998 and 2007. Anthropometric characteristics were body mass, body height, sitting height, circumferences taken at sites of upper arm, flexed upper arm, chest, waist, hip, thigh, and calf, bone breadth taken at the sites of humerus, and femur, skinfold thicknesses taken at the sites of triceps, subscapular, suprailiac, thigh and medial calf. Skeletal maturity was assessed by TW3 (Tanner et al., 2001). Maturity scores for Radius-Ulna-Short bones (RUS) and bone age were calculated. Physical fitness parameters included flamingo balance, sit and reach, grip strength, sit-ups, standing long jump, bent arm hang, 50m shuttle run and multi-stage shuttle run. All data were analyzed by SAS Enterprise 3.0. Means and standard deviations were calculated by descriptive statistics. Independent t-test was applied to compare dependent variables between measurements. The level of significance was set at p<0.05. Results of the study showed that male adolescents aged 12-13years in 2007 had significantly higher (p<0.0001) femur diameter than adolescents in 1998. Male adolescents in 2007 had higher (p<0.05) chest, waist and calf circumferences than those of adolescents in 1998. Although no difference were found for RUS and bone age in males adolescents between 1998 and 2007 female adolescents in 2007 were significantly delayed for their skeletal maturity level compared to female adolescents in 1998. For physical fitness parameters male adolescents aged 12 years in 2007 performed better for flamingo balance (p<0.01), and 50m shuttle run (p<0.05) than those of adolescents in 1998. However, stand long jump and bent arm hang were significantly decreased in male adolescents in 2007. Female adolescents aged 12-13 years in 2007 had significantly higher flamingo balance, but female adolescents aged 12 years in 2007 performed significantly less for standing long jump (p<0.0001), bent arm hang (p<0.001) and speed (p<0.05) than those of female adolescents in 1998. In conclusions this study suggest that chest circumference for both male and female adolescents in 2007 was significantly higher than those in 1998. Skeletal maturity for female adolescents in 2007 were significantly delayed compared to female adolescents in 1998. Further study is needed to evaluate consistent various.

VDT작업별 정신사회적 스트레스와 근골격계 장애에 관한 연구

백남종,강종두,주영수,배인근,권호장,박종만,조수헌,김돈규,김재용,최홍렬 大韓産業醫學會 1998 대한직업환경의학회지 Vol.10 No.4

It has been hypothesized that jobs that have both high psychological demands and low decision latitude("job strain") can lead to musculoskeletal disorder. The objective of this study was to test whether job strain was correlated with the presence of work-related musculoskeletal disorder, especially myofascial pain syndrome(MPS). Information on demographic factors, confounders such as household load and taking care of children or not, and scores for decision latitude, job demand, and social support was obtained by self-administered questionnaire, which had been developed in Korean language, by adopting NIOSH instrument and Extended Karasek Model(16 items). All subjects were also examined by rehabilitation medicine specialists for musculoskeletal disorders. Subjects(n=370) could be categorized into 4 groups, these were, housewives(n=89), shipyard CAD workers(n=89), general female workers(n=79; nurses, insurance counselors, public officials, clerks, etc), and telephone directory assistance operators(n=113). Results from univariate analyses indicated that all demographic factors, all confounders, scores for decision latitude and social support were not associated with the risk of musculoskeletal disorder. However, score for job demand was higher in musculoskeletal disorder cases than others. In subgroup analysis, this association was convinced again, in telephone directory assistance operators. Job strain model showed that the group of telephone directory assistance operators was high-stain group, and OR of musculo skeletal disorder was 2.446(95% C. I. : 1.174, 5.096), when comparing this with the low strain group. In conclusion, job strain is a risk factor for work-related musculoskeletal disorder.

동종골수이식 환자에서 발생한 지역사회발생 Parainfluenza virus 3형 폐렴 1예

신종욱,조요한,강철인,김성한,이상윤,김의석,오명돈,이환종,박선양,김병국,최강원 대한감염학회 2002 감염 Vol.34 No.5

생활체육참여자의 사회인구학적 특성과 인지된 삶의 질의 관계

강종구(Kang Jong Gu) 한국사회체육학회 2003 한국사회체육학회지 Vol.19 No.2

The purpose of this thesis is to investigate the perceived life quality of participants in leisure sports by social demographic character. To achieve this goal, The people from twenties to fifties who reside in Jeon-ju were established as a population, and the sample for the investigation was collected by multi-class random sample research and the data of 362 people were used for the practical analysis. As the investigating paper for the leisure satisfaction scale, Beard and Ragheb`s Leisure Satisfaction Scale translated and standardized as a measuring method by Jong-gil Lee was used, and as the investigating paper for the life satisfaction scale, Dinner, Emmonson, Larsen and Griffin`s(1985) The Satisfaction With Life Scale (SWLS) translated and standardized as a measuring method by Won(1989) and Jong-gil Lee was used. An equation fluctuant analysis, public fluctuant analysis and multi-recurrent analysis, etc. were adopted as the statistic methods to analyze the collected material according to the purpose of this thesis. The conclusion for the connection on the perceived life quality of participants in leisure sports by social demographic character according to the above method of research and process is as below; First, among the changing factors which have an influence on the participation of the leisure sports. The degree of the participation is not difference by the age, but by the economical position. And the changing factors by social demographic character which have an influence on the leisure and life satisfaction scale, the changing factors of the life quality, also difference by the economical position and a little of difference by the age. Second, in the connection with the leisure satisfaction scale, the changing factors for the participation of leisure sports and the life quality, the group of participation is higher than group of non-participation and the group of participation is higher than the group of non-systematic participation. Third, in the connection with the life satisfaction scale, the group of participation is higher than the group of non-participation and the group of systematic participation is higher than the group of non-participation. Fourth, in the connection between the participation of the leisure sports and the perceived life quality, the participation of the leisure sports has a direct connection with the changing factors of consisting the life quality.