In vitro propagation of Coleus forskohlii, an important medicinal plant

Yang,Deok-hun,Jeon,Manju-Meluttu-George,Jong-Seong 한국자원식물학회 2003 Plant Resources Vol.6 No.2

For mass multiplication of an important medicinal plant Coleus forskohlii, a procedure for the high frequency regeneration of Coleus forskohlii has been developed using leaf explants via callus culture. Callus formation occurred in MS medium supplemented with 1-2 mg/L each of NAA and BAP. A large number of shoots were formed on MS + 1 mg/L BAP from 50-60 days old greenish calli. Rooting of healthy shoots occurred on 0.1-0.4 mg/L NAA. The protocol described could be useful in future for genetic manipulation of this plant species.

The Study on Medicinal Flora of Several Uninhabited Islands in Jindo-gun, Chonnam province

Yang,Hyo-Sik,Kim,Jong-Wook,Oh,Man-Ho 한국자원식물학회 2003 Plant Resources Vol.6 No.1

The medicinal plants in 22 unhabited islands of Jindo-gun, Chonnam provincde were investigated from March 2000 to October 2002. The medicinal plants in 22 uninhabited islands of Jindo-gun were consisted 366 taxa; 95 families, 269 genus, 309 species, 52 varieties, 3 forma, and 2 subspecies. Important medicinal plants on survey area were Lemmaphyllum microphyllum, Dendropanax morbifera, Ficus erecta, Farfugium japonicum, Machilus thunbergii, Juniperus chinensis var. procumbens, Dendrobium moniliforme, Pyrrhosia tricuspis, Cinnamomum japonicum, Pittosporum tobira, Kadsura japonica, and Daphniphyllum macropodum, This result can be used as basic information data for medicinal research and the conservation of uninhabited islands.

원문 : 야외운동기구를 이용한 운동프로그램이 노인들의 활동체력, 대사증후군 위험인자 및 염증인자에 미치는 영향

양상훈 ( Sang Hoon Yang ),김종식 ( Jong Shik Kim ) 한국운동생리학회(구 한국운동과학회) 2014 운동과학 Vol.23 No.3

양상훈, 김종식. 야외운동기구를 이용한 운동프로그램이 노인들의 활동체력, 대사증후군 위험인자 및 염증인자에 미치는 영향. 운동과학, 제23권 제3호, 229-240, 2014. 본 연구는 여성노인 65세 이상 16명을 대상으로 8주간의 야외운동기구를 이용한 운동프로그램 참여가 활동체력, 대사증후군 위험인자 및 염증인자에 미치는 영향을 규명하였다. 활동체력의 경우 악력은 유의한 차이가 없었으나 하지근력과 유연성은 운동 후 유의하게 증가한 것으로 나타났다. 대사증후군 위험인자의 경우 HDL-C는 운동 후 유의하게 증가하는 것으로 나타났으며, glucose는 유의하게 감소하는 것으로 나타났다. 허리둘레, 수축기 혈압, 이완기 혈압, TG는 유의한 차이가 없었다. 염증인자의 경우 CRP, TNF-α 모두 운동 후 감소하는 것으로 나타났으나 유의한 차이는 없었다. 결론적으로 야외운동기구 운동프로그램은 하지근력, 유연성 강화와 HDL-C 증가, glucose 감소의 연구결과를 보았을 때 더 다양한 야외운동기구를 이용한 운동프로그램을 개발하고 지속적으로 운동의 효율을 높여간다면 노화를 지연시킬 뿐만 아니라 각종 질병을 방지하고 건강을 유지시키는 효과를 기대할 수 있을 것으로 사료된다. Yang, Sang-Hoon, Kim, Jong-Shik. The Effects of Exercise Program Outdoor Exercise Equipment on Activity Fitness, Metabolic Syndrome Risk Factors and Inflammatory Factors in the Elderly. Exercise Science, 23(3): 229-240. 2014. This study is for observing the influence of exercising in outdoor exercise facilities for 8 weeks on activity fitness, risk factors of insulin resistance syndrome and inflammatory factors in 16 females who are aged 65 years or older. The major results on this analysis are as follows: In parameters for activity fitness, there was no significant difference in grasping power but a significant increase in strength of lower limb muscles and flexibility after exercise. For risk factors of insul in resistance syndrome, there was a significant increase in HDL-C after exercise with a significant decrease in gl ucose. There was no significant difference in waist l ine, systol ic bl ood pressure, diastol ic bl ood pressure and TG. For inflammatory factors, there was a decrease in CRP and TNF-α after exercise with no significance. In conclusion, the results showing positive effects on physical fitness of lower limb muscles and physiological markers including HDL-C and glucose indicates that elderly women exercising in outdoor exercise facilities may have benefits of antiaging effect, prevent various diseases and stay healthy if efficiency of exercise using outdoor exercise facilities is continually improved in a variety of training programs.

左則 上두骨 및 頰骨에 發生한 殲維性 骨異形成症의 治驗例

梁棟奎,朴相俊,金秉民,金基元,金鍾烈 大韓顎顔面成形再建外科學會 1990 Maxillofacial Plastic Reconstructive Surgery Vol.12 No.3

Fibrous dysplasia is an idiopathic skeletal disorder in which medullary bone is replaced and disturbed by poorly organized, structually unsound fibroosseous tissue, which may produce cortical expansion. When facial bones are involed, considerable esthetic deformity may result. The term monostotic fibrous dysplasia has been applied when one bone is involved : when more than one bone is affected, the term polyostotic used. The polyostotic form may be accomplished by pigmented skin lesion (Jaffe type), or by pigmented skin lesions with endocrine disturbance (Albright syndrome). No general agreement exists on the cause of fibrous dysplasia. A few authors have suggested that fibrous dysplasia arises as a resujlt of trauma. It occurs predominantly in infant, adolescent females and runs a variable clinical course. When several bones are involed, it tends to be unilateral. Involements of alveolar bone may produce displacement of teeth with malocclusion, or loss of teeth, or both. Radiographycally, ti shows an indistinctly delimited osteolytic defect with a bubble - like pattern, but without a sclerotic rim. The preferred treatment is almost always surgery. If the lesion is extensive, surgical intervention with use of recontouring procedures aimed at the correction of esthetic or funtional disturbances is preferred treatment. Now, we present a case of fibrous dysplasia on the left maxilla and the zygoma treated by bony contourign via hemicoronal flap and intraoral approach with good results.

클러스터를 기반으로 한 인증 기법에 관한 연구

양환석,김종민,이웅기 朝鮮大學校 統計硏究所 2006 統計硏究所論文誌 Vol.8 No.1

본 논문에서는 ad hoc network에서 클러스터를 기반으로 노드들의 인증을 통한 안전한 데이터 전송 방법을 제안하였다. 클러스터를 관리하는 클러스터 헤드 노드는 클러스터가 형성될 때 멤버 노드들의 이웃 노드들에 대한 신뢰 정보를 받는다. 클러스터 헤드는 이러한 신뢰 정보와 자신의 정보를 조합하여 보다 정확하고 효율적으로 다른 노드를 평가한다. 이렇게 함으로써 네트워크에 새롭게 참여하는 노드에 대해서도 보다 정확한 인증을 수행할 수 있게 된다. 그리고 무선망의 제한된 대역폭을 고려하여 네트워크 상의 제어 패킷의 양을 줄여 데이터 전송의 효율성을 증가시키기 위해 제한된 broadcast 메커니즘을 이용하였다. 실험을 통해 제안한 방법의 효율성을 확인하기 위해 클러스터 헤드의 수, 경로 길이, 그리고 제어 패킷의 양을 측정하였다.

노즐형상비에 따른 디젤분무의 특성

양윤석,이창수,허종철 濟州大學校 産業技術硏究所 2001 산업기술연구소논문집 Vol.12 No.1

In this study. diesel spray characteristics has been conducted to investigate the effect on nozzle aspect ratio(L/D). A single hole nozzle which is 0.45mm in diameter and 2.78. 3.89. 5 in the nozzle aspect ratio is used. Injection pressure is 14MPa and ambient pressure are 0.1MPa and 3MPa. By nozzle aspect ratio. the disintegration process of a diesel spray was observed. The double flash method has been employed to visualize the developing process of the diesel spray.

흡착부과반응기를 이용한 스팀-메탄 개질 반응에서의 수소 제조

양정일,김종남 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.4

고농도의 수소를 제조하기 위해, 흡착부과반응기를 이용한 스팀-메탄 개질 반응을 수행하였다. Cahn balance를 이용하여 흡착부과반응기에 사용되는 고온용 CO₂ 흡착제의 CO₂ 흡착량을 측정하였는데, K₂CO₃)/hydrotalcite가 고온용 CO₂ 흡착제로서 적당하였다. K₂CO₃/hydrotalcite는 K₂CO₃ 함침에 의한 염기성 증가라 기공 구조의 변형으로, 450℃와 0.3 atm의 CO₂ 압력에서 0.575 mmol/g의 높은 CO₂ 흡착량을 보였다. 상업적 촉매, Ni/Al₂O₃ 만을 이용한 500℃에서의 스팀-메탄 개질 반응은 스팀과 메탄의 반응물 비가 6:1에서는 과량의 스팀에 의해 촉매의 비활성화가 나타났지만, 3:1의 반응물 조건에서는 40.9% H₂, 48.4% CH₄, 10.7% CO₂, 0.35% CO의 적절한 촉매 활성이 나타났다. 촉매와 CO₂ 흡착제가 동시에 충전된 흡착부과반응기를 이용한 스팀-메탄 개질 반응은 흡착제에 의한 CO₂ 흡착으로 평형 농도 이상의 고공도 수소를 얻을 수 있었는데, 반응물 공간 속도 5.81 mmol/g_(cal.)-h에서 얻어지는 최대 수소 농도는 84.8%이었으며, 부생성물인 CO₂가 파과되기 전까지 얻어진 H₂ 수율은 67.1%이었다. To produce high concentration of hydrogen, steam-methane reforming reaction was carried out by using sorption enhanced reaction process. Cahn balance was used to check CO₂ adsorption capacities of the CO₂ adsorbents which could be applicable to the sorption enhanced reaction process at high temperature. and K₂CO₃/hydrotacite was selected as the most suitable CO₂ adsorbent at the high temperature. The K₂CO₃/hydrotalcite showed a high CO₂ adsorption capacity as much as 0.575mmol/g at 450℃ and 0.3 atm of CO, pressure because of its increased basicity and pore structure modification by K₂CO₃ impregnation. In the steam-methane reforming reaction using Ni/Al₂O₃ catalyst without CO₂ adsorbent at 500℃. there was catalyst deactivation due to excess amount of steam in case of 6:1 steam and methane ratio, but there was suitable catalyse activity such as 40.9% H₂, 48.4% CH,, 10.7% CO₂, and 0.35% CO of product composition for 3:1 reactants ratio. In the sorption enhanced reaction process using a reactor packed with the catalyst and the CO, adsorbent simultaneously, high concentration of hydrogen above the equilibrium was generated via CO₂ adsorption by the adsorbent, and the maximum concentration of hydrogen was 84.8% and the hydrogen yield was 67.1% until by-product CO₂ broke-through.

성인 막성신병증의 임상적 고찰

양종오,이상주,박기현,장윤경,이강욱,서광선,신영태 충남대학교 의학연구소 2001 충남의대잡지 Vol.28 No.2

Membranous nephropathy (MN) is a glomerular disease characterized by diffuse thickening of the glomerular basement membrane without significant mesangial proliferative change and is usually manifested by the nephrotic syndrome. To evaluate the clinical and pathologic characteristics of this disease in adults, we analyzed 65 patients with primary membranous nephropathy who were diagnosed at Department of Internal Medicine, Chungnam National University Hospital from February 1986 to February 2001. The results are as follows: 1) Of total 96 patients with membranous nephropathy, 67.7% was primary MN. Hepatitis B-associated MN and lupus MN were 22.9%, and 9.4%, respectively. Median duration of follow-up was 35.1 months(0.3∼177) in primary MN, 49.6 months(2.5∼103) in lupus MN, and 35.6 months(0.5∼108) in hepatitis B-associated MN. 2) Mean age of the patients with primary MN at the time of diagnosis(43.3 years) was significantly higher than that of lupus MN(30.4 years) and HBV-associated MN(36.2 years). Male to female ratio of primary MN was 1.03:l. 3) At the time of diagnosis, 89.2% of primary MN was presented with nephrotic syndrome. Twenty seven percent of patients showed hypertension. Hematuria was found in 58.5% of primary MN patients. Azotemia was noted in 3.1 %. 4) Global sclerosis, tubular atrophy and interstitial fibrosis were noted in 39.8, 16.1 and 11.3% of primaty MN, respectively. IgG and C3 were deposited on the glomerular capillary loop in 92.7% and 29% of primary MN patients. There was no significant correlation between the electron microscopic pathologic stage and clinical findings. 5) Of 56 patients with primary MN followed more than 6 months, 50(90.9%) patients were treated with prednisolone, cyclophosphamide or cyclosporin. Complete remission was obtained in 29 patients(51.8%), partial remission in 6 patients(10.7%), and no response in 18 patients(32.1%). Of 6 patients who were not treated with immunosuppressive drugs, 3 patients showed spontaneous complete or partial remission. Three patients who did not show clinical improvement progressed to end-stage renal failure. There were no significant clinical difference including renal pathology at the time of diagnosis between the patients who showed complete or partial remission and patients who did not. In conclusion, it was difficult to predict the long-term prognosis of primary MN at the time of diagnosis, clinically. The response to therapeutic modality would be the most important to predict long-term prognosis of primary MN.

부가채널공격을 고려한 타원곡선 연산 H/W 구현 방안

양종원,이창원,서창호 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

암호 알고리즘이 장착된 하드웨어를 통한 신뢰할 수 있는 보안 서비스를 제공하기 위해서는 부가채널공격에 대한 이해와 이에 대비한 암호 알고리즘이 개발이 필수적이다. 본 논문에서는 타원곡선 연산 H/W 설계하기 위해 부가 채널에 안전한 공격 방법에 대해서 살펴 본다. 또한 효율적인 RSA 암호 알고리즘을 구현하기 위해서 몽고메리 알고리즘의 정확한 분석을 포함하여 성능 개선을 위한 구현 방법을 정립했다. ECC(Elliptic Curve Cryptography)는 소인수분해 난제를 이용하는 RSA 암호 기법과는 다르게 타원 곡선에서의 이산 대수 해결 난제를 이용한 암호 기법으로, RSA에 비해 적은 키 길이로서 동등한 안전도를 제공한다. 그리고 타원곡선의 효율적인 측면에서 구현 몯ㄹ에 관한 연구하였으며, 타원곡선 스칼라 곱셈 알고리즘이 부가 채널 공격인 시차 공격과 전력 분석 공격에 안전하기 위한 일반적인 조건과 H/W 구현 방안에 대해 제시한다.

백운산(제천시) 일대의 식물상

양종철, 엄정애, 장창석, 장창기, 이철호, 김규식, 오병운 忠北大學校部設基礎科學硏究所 2006 自然科學硏究 Vol.20 No.-

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