水素 이온 濃度變化가 平滑筋 細胞膜에서의 KCI 誘導 Ca-Uptake에 미치는 影響

昔廷鎬,林鍾鎬,李載欣 충남대학교 의과대학 지역사회의학연구소 1986 충남의대잡지 Vol.13 No.1

For the purpose of studying the properties of calcium channel, the effect of pH on the KCl induced Ca-uptake in the isolated porcine intestinal sarcolemmal vesicles, which were loaded with high KCl was investigated. The obtained results were as follows; 1. Ca-uptake in the membrane of depolarized state by high KCl, compared with that of polarized state by low KCl in the medium was increased significantly(increased about 95.7% for 30 seconds, pH 7.4). 2. Ca-uptake in the membrane of predepolarized state by high KCl, compared with that of polarized state by low KCl was also increased significantly but less than that of depolarized state by high KCl (increased about 66.7% for 30 seconds, pH 7.4). 3. Influence of pH on the Ca-uptake of various membrane state was increased or decreased according to pH changes. Ca-uptake in the membranes of incubated at pH 6.0 was decreased about 48.5%, but increased about 10% and 36% at pH 8.0 and 9.0 respectively, compared with that incubated at pH 7.4. 4. KCl-induced Ca-uptake at the various pH conditions, was not inhibited by the pretreatment of diltiazem(10^-6M). From the above results, it was concluded that KCl-induced Ca-uptake at the various pH conditions in the isolated sarcolemmal membranes, prepared from porcine intestinal smooth muscle, was not mediated through channels which are inhibited by organic Ca-antagonists.

기기 중성자방사화분석법을 이용한 황사특성

임종명,이현석,이진홍 忠南大學校 環境問題硏究所 2002 環境硏究 Vol.20 No.-

Using INAA, which has been thought to be one of the best analytical techniques for airborne particulate matters, this study centered on the quantitative analysis of 32 metal elements within Asian Dust aerosols. Concentrations of REEs of crustal origin, such as Ce, Cs, Dy, La, Sc, and Sm were more than 8.5 times higher in Asian Dust aerosols. In addition, major crustal elements, such as Al, Ca, Co, Fe, K, Mg, Mn, and Ti showed more than 3 times higher concentrations in those aerosols, which made PM 10 and all metal concentrations be also about 3.0 and 4.8 times higher, respectively. However, concentrations of anthropogenic origin, such as As, Br, Ci, I, In, Sb, Se, and Zn were increased to be a little higher, which means no great effect of Asian Dust on these elements.

웹 서버 구현 방안들에 대한 성능 비교

임동관,선주호,김종욱,김용석 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B

For Web server implementations, there are 4 main schemes: process-per-request (PPR), thread-per-request (TPR), worker thread pool (WTP), and worker thread pool with buffers (WTPB). This paper compares performance of the schemes in response time point of view. WTPB shows the best performance. The appropriate number of worker threads for WTPB depends on the request service time. For short requests, the number can be very small. But for longer requests, it is about 1/6 of the number of simultaneous connections.

土地公槪念과 私有財産制와의 法的 葛藤에 관한 硏究

林正平,石琮顯 단국대학교 1986 論文集 Vol.20 No.-

액체크로마토그래피/질량분석법을 이용한 랫트 혈장내의 Surfactin C의 정량법에 관한 연구

임종환,김명석,이동연,이상훈,백경진,김태원,정두순,박병권,윤효인 충남대학교 수의과대학 동물의과학연구소 2004 動物醫科學硏究誌 Vol.12 No.-

Surfactin isolated from Bacillus subtilis has a strong surface tension-lowering activity, together with antiviral, antitumor, fibrinolytic and hypocholesterolemic activities. LC/MS is a simple, rapid and effective technique for the determination of surfactin C in rat serum. The separation of surfactin was achieved on reverse phase column. The mobile phase consisted of 0.1% trifluoracetic acid in water (A) and acetonitrile (B). As a result of analysis of blank rat serum samples, matrix interference was not shown. The values of precision and accuracy were satisfied w the guideline. A newly developed LC/MS method for the determination of surfactin C was successfully applied in its pharmacokinetic analysis.

BIPV 건물 외피시스템 개발 : Curtain Wall의 일체화 가능성을 중심으로 Focused on the unification possibility to the Curtain Wall

임종욱,오민석,김회서 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2

PV system(Photovoltaic system) as an alternative energy resource for a fossil fuel is judged to have an enormous possibility in a usable point of earth, everywhere. Therefore, this paper intends to advance its practical use by proposing how to get integrated PV system which can be applied to building external curtain wall, and how to apply it. It has materialized the possibility of integrating details which can be applied to curtain wall by making insulating glass PV (the performance of insulation has been improved) through adding the layer of air (12 ㎜) and rear glass (6 ㎜) to integrated sandwich glass PV module. The proposed insulating glass PV module was applied to vision and then, the load was measured. The result shows that because of influence by solar radiation to the southern part in summer, it is advantageous for energy saving and it can make an additional effect of peak cut.

ICP-AES를 이용한 대기분진 중 중금속 분석에 대한 정도관리

임종명,이현석,이진홍 忠南大學校 環境問題硏究所 2003 環境硏究 Vol.21 No.-

In this study, factors of quality control such as laboratory environment, capability of instrument/equipment, method of analysis, calibration, and standard solution were investigated to obtain quality assurance when analyzing airborne heavy metals (e.g., Pb, Cr, Cd, Cu, Mn, Ni, Fe) using ICP-AES. A procedure of quality assurance and evaluation method of uncertainty are also suggested by applying ISO Guide. The suggested process of quality assurance will be helpful for the national monitoring network to produce better data.

연약점토상 자갈성토지반에 대한 반복재하시 지반의 거동에 관한 연구

임종석,정상균,하혁 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-

When the band load effects on the surface of soil ground, the characteristics of underground stress vary from the equipment load and the ground condition. The experimental data of the underground stress occurring on the weak stratum can be more accurate on the estimation by running the equipment and these can be applied to a counterplan for the improvement of appropriate construction equipment.

대전 3, 4 공단지역의 대기 중 PM 2.5내 미량금속의 특성

임종명,이현석,이진홍 忠南大學校 環境問題硏究所 2003 環境硏究 Vol.21 No.-

This study centered on the quantitative analysis of about 27 trace metals including toxic ones of airborne PM 2.5 in the 3rd and 4th industrial complex area of Daejeon city, Korea. For analytical quality control, the certified reference material (NIST, the National Institute of Standards and Technology, U.S.A., SRM 2783, Air particulate on filter media) was used. The errors relative to SRM values of Sb, Mn, V, Ca, Mg, Na, K, Ti, Co, Zn, and Sm fell below 5%, while those of Cr, Fe, Ba, Th, Ce, Al, and Cu were less than 10%. From the results of the quantitative analysis using INAA, the concentxation of toxic metals such as As, Mn, Se, V, and Zn were 2.40±1.99ng/m^(3), 6.54k3.15 ng/m^(3), 1.17±0.66 ng/m^(3), 1.1150.58 ng/m^(3), 52.31±25.92 ng/m^(3), respectively. If compared in terms of enrichment factors, it was found that certain elements (e.g., In, Cu, Zn, As, C1, I, Br, Sb, and Se) are enriched in PM 2.5 samples of the study site. The results of factor analysis by SPSS shows that 70.0% of total variance is well explained.

회분식 생물반응기를 이용한 BDOC_(rapid)와 BDOC_(slow) 결정

손희종,노재순,강임석 한국물환경학회 2004 한국물환경학회지 Vol.20 No.4

In this study, biodegradable organic matter was divided into a rapidly biodegradable fraction(BDOC_(rapid)) and a slowly biodegradable fraction(BDOC_(slow)) for various waters with different types of DOC. These fractions(BDOC_(rapid) and BDOC_(siow)) were defined by using a shaking incubation method modified from Carlson's method. Also, in this study, optimum incubation time and accuracy were investigated to determine BDOC_(rapid) and BDOC_(slow). When suspended bacteria obtained from raw water and BAC effluent, or attached bacteria from BAC was respectively used as an inoculum, the difference in total BDOC(BDOC_(total)) was minimal. Therefore, total BDOC was determined in 7~8 days by the shaking method, which is comparable with Servais's method by which BDOC was determined in 28 days. In addition, the difference of BDOC between these two methods was within 7%. Although BDOC_(rapid) and BDOC_(slow) were effectively determined by a method defined by Klevens, the difference in optimal incubation time was significant for different water samples. However, when using the shaking method, optimal incubation time for BDOC_(rapid) was found to be 3 days, therefore, the BDOC_(rapid) was defined as the difference between DOC_0 and DOC_(3days), and BDOC_(slow) was defined as the difference between BDOC_(total) and BDOC_(rapid). As a conclusion, for determining the fraction of BDOC using the shaking method, the concentrations of an inoculums and optimal incubation times used in this study were very effective.