Oil Contents and Fatty Acid Composition of Korean Perilla (Perilla ocimoides L.) Collections

Hong,Seong-Taek,Son,Suk-Yeong,Jong,Seung-keun,Rho,Chang-Woo,Yun,Jong-Sun 한국자원식물학회 2003 Plant Resources Vol.6 No.3

This study was carried out to obtain informations on the variations of oil content and fatty acid composition among 90 Korean perilla collections. Average oil content of 90 perilla collections was 44.2% with a range from 29.7% to 61.9%. Perilla collections with late-maturing, super-large seed and gray seed coat showed higher oil content than other types in general. Average saturated fatty acid content in perilla oil was 9.0% with a range from 8.2% to 10.7%, while average unsaturated fatty acid content varied from 89.3% to 91.8% with a mean of 91.0%. Contents of saturated and unsaturated fatty acids were not related to maturity. There were no differences in the contents of saturated and unsaturated fatty acids according to maturity. Linoleic acid and linolenic acid contents were the highest in the super large-sized group(15.5%) and in the large-sized seed group(61.4%), respectively, while contents of fatty acids among the perilla collections were variable with different seed coat colors. Most of the traits studied were not significantly correlated with oil content, but linoleic acid($\omega$ 수식 이미지-6) content was negatively correlated (r=-0.217*) with linolenic acid(ω-3) content.

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.

우리나라 지역 직업성질환 감시체계의 현황과 전망

임종한,장성실,김성아,문재동,채창호,홍윤철,김수영,김진석,김영욱,한상환,이혜숙,원종욱,송동빈,하은희,강성규 대한산업의학회 2001 대한직업환경의학회지 Vol.13 No.2

기존의 특수건강진단과 작업환경측정을 통한 직업병 관리가 진폐증, 소음성난청 등의 소수 특정질환에 국한되고 실제 직업병 발생 규모 파악이나 신종 직업병의 발견에 한계를 보인다는 사실은 산업의학전문가들 사이에서도 공감을 이루고 있다. 미국과 영국 등에서의 직업성질환 감시체계에 대한 경험은 우리 나라의 직업성질환 감시체계 구축에도 새로운 자극제가 되면서, 1998년이후 인천, 대전, 여천, 구미, 부울경 지역에서 지역 직업성질환감시체계를 산업보건관리의 중요한 시스템으로 구축하려는 노력이 확산되고 있다. 새로이 구축되어지는 이들 지역 직업성질환 감시체계는 감시하고자 하는 대상질환, 활용 가능한 인적자원 및 자료원, 지역 의료체계의 특수성 등에 따라서 목적과 방법을 달리하면서 독특한 형태로 발전을 하고 있다. 각 지역단위 감시체계들이 그 상황에 맞게 독특한 목적과 전략들을 발전 시키면서도, 향후 발전할 국가적인 차원의 직업성질환 감시체계 구축을 위하여 직업성질환 감시의 기본 전략 등을 공유하는 등의 노력이 필요하다. 환례 정의 및 기본적인 등록 서식의 공유, 직업성질환 감시 자료원의 발굴, 공동의 정보 네트워크 및 직업성질환 감시 데이터베이스 구축 등 직업성질환 감시활동을 지원하기 위한 여러 기초 인프라 구축에 힘을 모아야 할 것이다. 우리 나라에서 직업성질환 감시체계를 성공적으로 구축하기 위해서는 수집된 자료의 질 관리를 위한 직업성질환 감시의 원칙 제정과 감시 전략의 공유 등이 필요하며, 전국적인 직업성질환 감시체계의 하부구조라고 할 수 있는 지역감시체계의 기초 토대 마련과 강화작업이 절실하게 필요하다.

消癌去痰益氣湯의 cyclophosphamide 부작용 형성 억제효과

홍종희,류기원,류봉하,윤상협,김진성 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2002 東西醫學硏究所 論文集 Vol.2002 No.-

Object : It is well known that modern chemotherapy against cancer has side effcts to a living body, especially hemopoietic and immunologial disfunctions. However, there are no effctive ways to reduce them.Recently, traditonal Korean herb medicine has been repoted to have some biological modifying responses. Therefore, we hypothesized that additional application of herb medicine during chemotherapy is more effective to reduce its side effects. While we were studying the effects, we have observed the inhibitory effect of Soamgudamikgitang on formation of side effects derived from Cyclophosphamide, it has been used in clinical practice at Kyung Hee Medicd Center.Methods : We injected 200㎎/㎏ of Cyclophosphamide, one time, to an experimental group, consisting of ten mice. We divided them into eight groups: normal, CPX, SAKT 2㎎, SAKT 10㎎, SAKT 50㎎, SAKI 2㎎+CPX, SAKT 10㎎+CPX, SAKT 50㎎+CPX. We injeted Soamgudamikgitang seven days, five days, three days, and one day before we injected CPX. One day, three days, and five days after CPX injection, we injected Soamgudamikgitang again and then killed all the mice.The parameters determined in this experiment were daily body weight liver and spleen weight, RBC, WBC, and platelet for hemopoietic dysfunction and AST, ALT for hepatotoxicity, BUN, creatine for renal toxcity, Iymphocyte proliferation activity and lymphocyte subsets for immunological toxvity.Results : We have found that Soamgdamikgitang has inhibitory effects on the formation of Cyclophosphamide 's side effects. Significant differences between the group, which contained Cyclophosphamide, and the other group, which contains Cyclophosphamide and 2, 10, 50㎎ of Soamgudamikgitang respectively were observed. Platelets(2㎎ of Soamgudamikgitang, p<O.05 ;10㎎, p<0.Ol ;50㎎, p<0.001), liver weight(SOw p.001), spieen weight(10mg, p<0.05), AST(all groups, p<0.01), ALT(2㎎, p<001 ;10㎎, p<O.05 ;50㎎, p<0.01), BUN(2㎎, p<0.01 ;50㎎, p<0.05). Althought immunological in both lymphocyte proliferation and its subsets were not observed, which shows that Soamgudamikgilang has a strong effect on T cell activities Conclusions : From the above results, we can expect that the combined therapy of Soamgudamikgitang and Cyclophosphamide is more effective for treating cancer Patients.

진동감쇠 장치를 부착한 트레일러의 3축진동

홍종호,이성범,김성엽 한경대학교 2003 論文集 Vol.35 No.-

This study was aimed to find out the basic information for reducing damage of agricultural products during transportation. The vibration absorption system, consisted of suspension at wheel mounting and coil spring & rubber at hitch part, was developed and tested for the vibration characteristics. The 3-dimensional acceleration levels were measured at engine and trailer part according to the low(500rpm), medium(1000rpm), and high(1200rpm) engine speed. The results of this research could be summarized as follows; (1) For low engine speed of 500rpm, the average accelerations of engine part were 0.0085 m/s², 0.0238m/s². and 0.0182 m/s² for X-, Y-, Z-direction, respectively. Those of trailer part were 0.0162 m/s², 0.013 m/s². and 0.0l06 m/s² for X-, Y-, Z-direction respectively. And the peak accelerations of trailer part were 0.19 m/s², 0.34 m/s², and 0.18 m/s² for X-, Y-, Z-direction, respectively at 80Hz of frequency. (2) For medium engine speed of 1,000rpm, the average accelerations of trailer part were 0.0164 m/s², 0.011 m/s². and 0.0104 m/s² for X-, Y-, Z-direction, respectively. And the peak accelerations were 0.31 m/s² at 100Hz, 0.29 m/s² at 70Hz, and 0.28 m/s² at 100Hz for X-, Y-, Z-direction, respectively. (3) For high engine speed of 1,200rpm, the average accelerations of trailer part were 0.0293 m/s², 0.0194 m/s². and 0.022 m/s² for X-, Y-, Z-direction, respectively. And the peak accelerations were 1.2 m/s², 1.1 m/s², and 1.9 m/s² for X-, Y-, Z-direction, respectively at 60Hz of frequency. (4) For the driving of power tiller at speed of 0.35m/s on the controlled road, the average accelerations of trailer part were 0.018 m/s², 0.031 m/s². and 0.027 m/s² for X-, Y-, Z-direction, respectively. And the peak accelerations were 0.13 m/s², 0.24 m/s², and 0.29 m/s² for X-, Y-, Z-direction, respectively.

中.長距離 달리기의 最適戰略에 關한 數理的 模型

洪盛杓,全鍾貴,崔哲圭 忠南大學校體育科學硏究所 1988 體育科學硏究誌 Vol.6 No.1

The mathematical theory of competitive running by Keller, which is based on the Newton's second law of motion, is applied to analyze the track records of the Asian and Korean athlets. In addition, the empirical formular proposed by Toots is used to represent the aver age speed of the runners for various races. The main conclusions arrived at are as follows. 1. According to the Keller theory, running at a constant speed is an optimum strategy throughout the races except the initial two seconds and the final 3 seconds, approximately, for distances greater than certain critical distances. But it is effective to run at a full speed with maximum propulsion, for the short distance sprints. 2. The critical distances obtained from the records are 291m for the World records, and 298 (320m for women) and 303m (330m for women) for Asian and Korean records, respectively. Thus the 400m race may be considered the reference item for the mid-range race. 3. Korean athletes show rather inferior physiological characteristics for the most cases analyzed, with the only exception for the oxygen supply rate of male athelets, which is somewhat greater than that of the Asian records. This may indicate a passilility of future development of superior mid and long distance runner from Korean athletes.

국내에서 분리된 Extended-Spectrum β-Lactamase 생성 Escherichia coli와 Klebsiella pneumoniae의 빈도 및 유형

홍성근,김선주,정성훈,장철훈,조성란,안지영,신종희,이혜수,송원근,어영,염종화,용동은,이경원,정윤섭 대한임상미샐물학회 2003 Annals of clinical microbiology Vol.6 No.2

하이테크 벤처기업의 국제화 요인에 대한 연구 : 정보보호업체를 중심으로 focused on the Korean information security industry

홍성태,전종근,강명수 한국인터넷비즈니스학회 2001 인터넷비지니스연구 Vol.2 No.2

본 연구는 자원의 제약이라는 중소기업이 안고 있는 특성을 갖고 있는 벤처기업의 국제화에 영향을 미치는 요인에는 어떤 것이 있는가를 한국의 정보보호 업체들에 대한 실증 조사를 통해서 살펴보았다. 연구 결과에 의하면, 첨단산업에 종사하고 있는 하이테크 벤처기업의 국제화는 경영자의 주관적 상황인식에 의해 영향을 받으며, 해외진출시 경쟁 양상은 자원의 한계로 인해 가격 경쟁 보다는 기술, 품질 경쟁에 의존하는 경향이 있다고 밝혀졌다. 그 외에도 기존의 국제화와 관련된 여러 요인에서 중요한 변수라고 할 수 있는 국제기업의 규모, 시장의 성숙도, 경쟁강도 등과 같은 요인에 대해서도 고찰하여, 자본금 규모와 경쟁의 강도에 대한 경영자의 기대도 영향을 미치는 것을 알 수 있었다. 연구 대상 기업을 정보보호업체로 한정하여 기업 국제화의 영향요인을 살펴봄으로써 산업특성요인을 제거하였으나 표본 수가 적고 대부분의 기업이 아직도 신생기업의 수준을 벗어나지 못하고 있어 실종분석 결과가 만족스럽지는 못하지만 전체적인 방향은 연구 가설에서 크게 벗어나지 않는다고 할 수 있다. 향후 다른 분야의 벤처기업으로 확장하고 기술적 학습, 다양성 및 진출방식 둥과 같은 다양한 변수를 포함시키는 연구로 발전시켜야 할 것이다. This study examines the factors of venture businesses' internationalization. We conduct empirical research on Korean information security industry which has the weaknesses resulting from the lack of resources like many other small-sized enterprises. As an increasing number of new venture firms arc internationalizing their business operations early in their life cycles, the analysis of the international expansion process of small technology-13ase0 firms is getting more important. Results identif4ed in this study suggest that the internationalization of high-tech venture businesses is influenced by the management attitude to the foreign market and they have a tendency to depend on the competition based on technology or product quality rather than price. Analyzing many other variables such as the size of the firm, the maturity of the market and the competition intensity, we found that the variable like the size in terms of capital and the expectation of the management to the competition intensity are also affecting high-tech ventures' going abroad. This finding has the implication that the venture businesses international expansion relate to environmental conditions like the booming of capital market and the specific circumstance of Korean venture industry.

BER을 경감하기 위한 직접파와 지연파를 분리, 합성하는 시스템

洪性一,邊健植,鄭宗宇,朴在云 東亞大學校 附設 情報通信硏究所 1993 情報通信硏究所論文誌 Vol.1 No.1

본 논문에서는 다중 경로에 따른 수신신호의 노화, 특히 이동통신에 대해서 문제가 되는 페이딩 대책으로 직접파와 지연파를 분리, 합성하는 적응 배열 안테나 시스템을 제시하고 분리된 직접파 출력 또는 지연파 출력만을 이용하는 시스템보다 두 신호를 합성한 시스템의 BER이 개선됨을 제시하였다. 시뮬레이션을 행한 결과 적응 배열 안테나가 적절히 동작하는 상황에 대해서는 분리된 출력을 적응적 Weight 조정을 하여 합성함으로써 직접파만을 이용하는 것보다 오율이 향상됨이 확인되었다.

초기 변형이 있는 일반 회전체 베어링계의 동조 진동응답해석

홍성욱,박종혁,서용규 金烏工科大學校 1996 論文集 Vol.17 No.-

Rotating machinery often encounter excessive vibration due to various sources. Among others, synchronous excitation such as rotating unbalance and initial deformation is acknowledged as essential source affecting the forced vibration of rotor-bearing systems. In the present paper synchronous response is considered in the presence of initial deformation as well as unbalance. The present paper considers general, flexible rotor bearing system, instead of simple rotors as usually adopted in the literature. The present paper intends to reveal the peculiar effects due to initial deformation in general rotor bearing systems which include rotation speed dependent elements and anisotropic nature. Two numerical examples are provided to illustrate the physics of rotor-bearing systems with initial deformations.