백화사설초 메탄올 추출물에 의한 HL-60 細胞 枯死過程에서의 cell cycle 關聯因子의 活性變化 硏究

한세희,이종범,문구,문석재,원진희,박래길,이종덕 대한한방종양학회 2000 대한한방종양학회지 Vol.6 No.1

Objecives: Hedyotis diffusa is used to treat cancer in traditional Korea Medicine. So this study was carried out to examine the expression of cell cycle related genes in HL-60 cells undergoing apoptosis by the methanol extract of Hedyotis diffusa. Methods: 1. HL-60 cells were treated with various concentrations (from 200 to 50㎍/ml)of metnanol extract and H20 extract (200 ㎍/ml) of hedyotis diffusa. After 48 h later, the cells were tested for viability by MTT assay. 2. The HL-60 cells were treated with 200 ㎍/ml of methanol extract for the indicated periods. The whole cell lysates were prepared and analyzed by westem blotting using anti-p53 antibody. 3. The nuclear extract were prepared and analyed by western blotting using anti-p21 antibody, anti-p27 antibody, anti-cyclen A antibody, anti-cylin E antibody and anti-CDK2 antinbody. Results: 1. The methanol extract of Hedyotis diffusa induced the death of HL-60 cells in a dose dependent manner. 2. The methanol extract of Hedyotis diffusa makedly decreased the level of p21/Cipl and cyclin A in a time dependent manner. 3. The methanol extract of Hedyotis diffusa markedly increased tje ;eve; pf p27/Kip and cyclin E in a time dependent mammer. 4.The methanol extract of Hedyotis diffusa markedly did not affect the level of CDK2. Conclusions: These results provide evidence that expression of cell cycle related genes in HL-6- cells undergoing apoptosis by the methanol extract of Hedyotis diffusa mainly results from decreased level of p21/cipl and increased level of p27/Kipl of the cell cycle related genes.

함축(Implicature)에 대하여

韓鎭錫 大田大學校 1982 論文集 Vol.1 No.1

I have analised the literary sense and indirect force of utterance according to Gricean Maxims and Searle's Indirect Speech Act. Grice explained the relationship between what is said and what is implicated in terms of cooperative principles. Implicature can be derived from the utterance with the help of reasonable cooperative maxims and background knowledge in the contexts. Searle's indrirect illocutionary act makes much progress in explaining the human communication principles. In Searle's theory, the role of politeness is acknowledged, but he hasn't systematised it. Searle's indirect speech act seems to maintain Gricean cooperative principles, but it isn't cooperative in the maxim of quality and maxim of manner. When the maxim of politeness is to be added, it will be cooperative. The explanation of implicature about the literary sense and speech act effect can be made in terms of speech act, cooperative principles, background knowledge of context, inference and politeness.

학습자중심 영어교육과 학습자 및 교사의 역할

한진석 대전대학교 인문과학연구소 1999 人文科學論文集 Vol.28 No.-

建築構造計算의 電算化에 관한 硏究 : -C. M? V 算定을 中心으로-

한진석 忠州大學校 1986 한국교통대학교 논문집 Vol.20 No.1

Users of PERSONAL COMPUTER with easy process and low cost are increasing today. Then this study develop a series of program for Structural Design calculation under consideration of the following demands; 1. To make the calculation under the philosophy and judgement of designer and the consideration in the midst of calculation process possible. 2. To make the check and change of input data and reruning easy. 3. To represent the output data. Especially, this study deals with a part of C.M.V,REPORT that a preparing step for structural design.

교정선의 종류, 결찰방법, 타액의 유무에 따른 마찰력의 비교연구

한정숙,이진우,차경석 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.2

치아에 부착된 bracket이 교정선을 따라 이동할때 필연적으로 bracket과 교정선, 결찰재 사이에 마찰력이 발생된다. 이에 저자는 동일한 bracket내에서 교정선의 종류, 결찰방법, 건조와 타액상태에 따른 마찰력 차이, 타액의 윤활제로서의 기능을 살펴보기 위해 본 연구를 시행하게 되었다. 본 실험에 사용된 bracket은 .018"× .025" slot의 상악 견치용 standard edgewise bracket(RMO. USA)이며, 교정선은 .016" , .016" × .022" 크기의 Cobalt-chromium(Elgiloy . RMO. USA), Nickel-titanium(Ni-Ti) (ORTHOLLOY : Goldstar Cable Co. KOREA), Beta- titanium(TMA : ORMCO Co., USA)의 2가지형태의 3종을 이용하여 활주할때의 마찰력을 만능시험기(Instron, M 1000 EC)를 사용하여 계측하여 다음과 같은 결론을 얻었다. 1.각각의 동일조건하에서 교정전의 재질에 따른 마찰력은 Co-Cr, Ni-Ti, β-Ti순으로 증가하였다. 단, 타액상태에서 elastomeric으로 결찰한 .016" 군에서는 예외이다. 2.각 조건하(건조/타액상태, .016" /.016" × .022" ) 에서 결찰방법에 따른 마찰력은 elastomeric보다 stainless steel 결찰에서 더 크게 나타났다(p<0.05). 3.각각의 교정선과 결찰방법에서 타액 유무에 따른 마찰력은 stainless steel로 결찰한 .016" Co-Cr, Ni-Ti, β-Ti는 타액상태에서 감소하나, stainless steel로 결찰한 .016" × .022" Co-Cr, Ni-Ti, β-Ti는 타액상태에서 증가하였다(p<0.05). 4.각 조건하(건조/타액상태, elastomeric/stainless steel결찰) .016" 과 .016" × .O22" 교정선 사이의 마찰력은 .016" × .022" 교정선에서 증가하였다(p<0.05). The purpose of this study was fourfold - to evaluate the general laws of friction applied to orthodontic conditions, to compare archwire materials under these controlled conditions, to compare ligation method, and to measure the effect of the artificial saliva on friction with these materials Three wire alloys (Cobalt-chromium, Nickel-titanium, Beta-titanium) in two size wires (.016" ,.016" × .022" ) were examined respect to the bracket (0.18 × .025" standard), and two ligature material (stainless steel, elastomeric) in dry and wer conditions The result were as follows, 1.The order of frictional force against alloy materials was Co-Cr (lowest), Ni-Ti, and β -Ti(highest) - with the exception of elastomeric ligation under wet conditions. 2.S.S. ligation gave rise to significantly greater friction than elastomeric ligation did. 3.Testing in the presence of saliva, rather than in dry conditions, decreased the frictional force for S.S. ligation with .016" Co-Cr, Ni-Ti, β -Ti. but, increased the frictional force for 5.5. ligation with .016" × .022" Co-Cr, Ni-Ti, β-Ti. 4.016" ×.022 " wire generated more friction than .016" wire.

Pt/MCM-41을 이용한 NO제거활성에 관한 연구

한상현,양재승,정석진 경희대학교 산학협력기술연구원 1999 산학협력기술연구논문집 Vol.5 No.-

In this study, in order to make up its drawbacks in the MCM-41 catalytic system, platinum metals was doped in MCM-41. To confirmed MCM-41 structure investigations of XRD,N2 Adsorption-Desorption Isotherm, and B.E.T.surface areas were examined. Additionally NO-TPD and Simulated Flue Gases Mixing & Acitivity Test were peformed.According to Specific character of platinum metal, NO reduction activity was favored in low temperature range less than 300℃ and More Activity was obtained when platinum was doped over aluminum substituted MCM-41 than silica type MCM-41. Injected of 10 vol% water vapor on Pt/Al-MCM-41catalyst, negligible effect of NO reduction was found. when compared with the activity performance of Pt-ZSM-5, still Pt/Al-MCM-41 has relatively higher resistant to water vapor and sulfut contents in flue-gases.

경피적 전기 신경 자극과 간섭파 치료의 동통 완화 기전에 대한 연구 -날록손 투여가 흰쥐의 꼬리 회피 반사와 뇌 척수액 내 베타 엔돌핀 농도에 미치는 효과-

김진호,한태륜,방문석,김돈규,권범선,임재영 大韓再活醫學會 1997 Annals of Rehabilitation Medicine Vol.21 No.6

산화에 따른 옥수수 전분의 분자량 분포 양상

한진숙,안승요 한국조리과학회 2002 한국식품조리과학회지 Vol.18 No.2

Corn starch was modified by the oxidation with sodium hypochlorite(NaOCl) and the changes in the distribution of molecular weight were examined. Corn starch was oxidized with 0.25, 0.5, 0.75, 1.0, and 1.5% active Cl/g of starch at pH 7.0 and 25℃ for 10 min. Oxidation of corn starch caused a change in the molecular weight distribution of amylopectin. The fraction of highest molecular weight in native starch decreased gradually and the fraction of lower molecular weight increased with increasing oxidation. Also, λ_max and iodine binding capacities of oxidized starches decreased and the soluble carbohydrate content increased by oxidation The differential scanning calorimetric results of oxidized starches showed that the temperature and enthalpies of gelatinization were not changed by oxidation; however, the more the starch was oxidized, the greater the extent of retrogradation.

고구마 가수분해물을 기본으로 한 아침 식사용 혼합음료 제조 및 품질특성

한진숙 한국조리과학회 2004 한국식품조리과학회지 Vol.20 No.3

As an attempt to develop new functional beverages for breakfast, sweet potato based beverages were prepared with hydrolyzed sweet potato, potato, and carrot products (sample : water = 1 : 1), and their chemical and sensory properties were evaluated. The content of reducing sugar and soluble solid of the sweet potato, potato, and carrot increased with enzyme treatment, while their viscosity decreased without significant change of color. The hunter color test showed that the beverages with 10% carrot content were high in redness leading to a decrease in their acceptability for sensory evaluation. The sensory score of the mixture containing 5% carrot was good, but beverage with 0% carrot reduced the sensory properties. The results showed that the final ratio of sweet potato to potato to carrot for the new functional beverage was 5 : 4.5 : 0.5. The pH of the beverage was adjusted to 5.0, 4.5, and 4.0 using an organic acid mixture. In the sensory test of the new functional beverage, the best sensory score(color, taste, smell, and texture) was the mixture of sweet potato : potato : carrot equaling 5 : 4.5 : 0.5 with a pH of 4.5.

고속 주행 모드에서 자동차 디퓨저의 스트레이크 개수와 배치에 따른 공기저항 유동해석

이진호,박성하,최동석,한영진,곽나영,이상욱 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2

This study proposes an optimized diffuser strake design that can improve driving performance for cars in high-speed driving mode. The speed of the vehicle is set to 160km/h, and the number of strake is set to 4, 6 and 8, and the angle of the diffuser is set to 4, 5 and 6 degrees. The arrangement of the strake is centered, edged and equally arranged. The optimized diffuser design induced with the Ansys Fluent analysis shows a drag coefficient of 16% less than the basic diffuser-free model at a diffuser angle of 6 degree, 8 strakes, and equal arrangement.