CBD으로 제작한 In:Cd_(1-x)Zn_(x)S/CdTe 태양전지의 전기적 특성에 관한 연구

심재선,송우창,방영근,김남석,임창민,장현 三陟大學校 2006 論文集 Vol.39 No.-

CdS thin films have been widely used a window material in heterojunction solar cells. In solar cell systems, where CdS thin films have been proved to be useful, partial substitution of Zn for Cd increases the optical window of the hetero-junction and also the diffusion potential. In this thesis, effects of the thickness of indium films and the annealing temperature on structural, optical and electrical properties of chemically deposited CdZnS films for the efficiency of the Cd_(1-x)Zn_(x)S/CdTe solar cells were investigated. Cd_(1-x)Zn_(x)S films were grown by chemical bath deposition (CBD), which is a very attractive method for low-cost and large-area solar cells. The open circuit voltage of Cd_(1-x)Zn_(x)S/CdTe solar cells increased due to reduced electron affinity difference between Cd_(1-x)Zn_(x)S and CdTe films. However, the conversion efficiency of Cd_(1-x)Zn_(x)S/CdTe solar cell decreased because of the higher series resistance(R_(s)) than CdS/CdTe solar cell. The series resistance and conversion efficiency of Cd_(1-x)Zn_(x)S/CdTe solar cell were improved by using indium-doped Cd_(1-x)Zn_(x)S films as window layer. Cd_(1-x)Zn_(x)S/CdTe solar cells fabricated with optimal conditions exhibited V_(oc)=630mV, J_(sc)=38.89mA/㎠ , FF=0.53, and η=13.2%

란크릭 캅셀(플루옥세틴 20mg)에 대한 프로작 캅셀의 생물학적 동등성 시험

심상범,조요나,오한석,류재환,이경태,김남재,서성훈 경희대학교 동서의학연구소 2001 東西醫學硏究所 論文集 Vol.2000 No.-

Bioequivalence of two flouxetine capsule, ProzacR (Lilly kora Ltd.) and LanclicR (Samsung Pharm. IND. Co.), was evalated according to the guideline of KFDA. Twenty four healthy male volunteers (21-26 years old) were divided into two groups and a randomized 2×2 cross-over study was employed. After 60mg of fluoxetine was orally administered, blood was taken at 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 24, 32, 48 and 72 hours after administration and just before administration. Plasma was analyzed for fluoxetine and internal standard (clomipramine) by a sensitive and validated HPLC assay. The pharmaco kinetic parameters (AUCt, Cmax and Tmax) wre calculated and ANOVA test was used for the statistical analysis of parameters. Differences in (AUCt, Cmax and Tmax between two capsules were -0.90, 3.46 and -14.08% respectively. All powers (1-β) for AUGt, Cmax and Tmax were more than 0.9. Detectable differences (Δ) and confidence interval were all less than ±20%. All the parameters above met the criteria of KFDA for bioequivalence and indicated that LanclicR capsules are bioequivalent to ProzacR capsules.

지역사회획득 폐렴의 치료지침 권고안

송재훈,정기석,강문원,김도진,배현주,서지영,심태선,안중현,안철민,우준희,이남용,이동건,이미숙,이상무,이영선,이혁민,정두련,지역사회획득 폐렴 치료지침 제정위원회 대한감염학회 2009 감염과 화학요법 Vol.41 No.3

A successful therapy of community-acquired pneumonia requires appropriate empirical antimicrobial therapy. Etiology and antimicrobial susceptibility of major pathogens of pneumonia can differ by country. Therefore, an ideal treatment guideline of community-acquired pneumonia should be based on the studies performed in each country. We developed a treatment guideline for community-acquired pneumonia in immunocompetent adults in Korea. This guideline was developed by the joint committee of the Korean Society for Chemotherapy, the Korean Society of Infectious Diseases, and the Korean Academy of Tuberculosis and Respiratory diseases.

이형성 신장과 동반된 이소성 요관

김재헌,한민철,박성재,정준호,심봉석,조민선 이화여자대학교 의과대학 2005 EMJ (Ewha medical journal) Vol.28 No.1

Ectopic ureteral orifice presents predominantly in young girls with duplicated kidneys and ureters, and mostly drains from ectopic ureters were associated with non-duplicated upper urinary systems and it is called a single system ectopic ureter. It is frequently associated with renal dysplasia or agenesis and ureterocele. Compared with ectopic ureter draining from the duplicated kidney, the diagnosis of single system ectopic ureter is often delayed because the ectopic ureter may be associated with a single small dysplastic, poorly functioning kidney. We report a case of single system ectopic ureter associated with dysplastic and poorly functioning kidney.

소형 풍력발전시스템을 위한 계통연계형 인버터에 관한 연구

李大東,沈在明,張錫九 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

We imported technology from abroad and studied grid connected type wind power generation owing to the lack of technology, but nowadays we conduct researches in many quarters because of national supporting policy. However, the research speed is delayed by burden for research expense which wind power generation is huge. Therefore, in order to experiment on various kinds of the wind turbine, generator, and converter easily, the development of wind power system is demanded powerfully among research workers. In this paper, in order to satisfy this need, I suppose a new simulation development environment. The electric power generated by wind is changing, so by using the converter, schedule electric power must be provided. Therefore, in this paper, I explained an element of the converter of the wind power generation system by showing two examples. First, Diode rectifier and current controlled voltage source inverter by using IGBT(Insulated Gate Bipolar Transistor) element was used in the wind power generation system. Second, rectifier for control by using IGBT and current controlled voltage source inverter by using IGBT element was connected the grid. Simulation for two examples of grid connected type wind power generation system uses PSCAD/EMTDC and analyzed the result.

콘덴서제조공장의 전력부하설비의 고조파에 관한 연구

김득중,심재명,장석구 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

Lately power semiconductors such as thyristor devices is widely used in electric power load installation. The use power semiconductors is easy to be a major cause of harmonics generation. In this paper, voltage and current harmonics is to be mesured in twenty places which is selected from power receiving board of the capacitor mannufactory. The results is analysised by experimental observation. According to the analysis contents, total voltage harmonics occured in the 22.9kv y-connection is to be proved within harmonics international standard but current harmonics was approached to standard upper limits line. The harmonics incoming through the distribution line by harmonics of the near factory is measured at the measurement factory. In this paper, the countermeasure to decrease harmonics generation quantity is considered through the theoretical survey.

가공 송전선의 부식진단시스템 개발

김성덕,심재명,정원일,장석구,이승호,김영달 大田産業大學校 2000 한밭대학교 논문집 Vol.17 No.1

A diagnosis method to inspect deterioration in overhead ACSR conductors is discussed in this paper. Corrosion would be occurred by various and complex factors such as atmospheric indices, installation environment and metallic configuration, but must of corrosions are mainly due to atmospheric corrosion, galvanic corrosion and crevice corrosion. Such corrosion in ACSR would lead to be zinc loss of galvanized steel strand and reduction of cross section area of aluminum strand and it may be mechanical strength of power conductor in service to reduce. Global corrosion can be treated as average corrosion occurring on the conductor and it would appear to any material variations by the elapsed years of the conductor in the atmosphere. Therefore, as estimating the loss rate of tensile strength of aged conductor corresponding to the elapsed years, it would be possible to quantify global corrosion indirectly to a prediction function. Through such results, loss degree for ACSR 97[mm2] is classified to 4 ranges. i.e., no loss, possible loss, partial loss and sever loss. Both local and global corrosion could not be detected by visual inspection, but we proposed a corrosion detector system using a solenoid eddy current sensor in order to inspect such corrosion for old conductor. Corrosion detecting system is constituted to a corrosion detector and a ground station controller. Corrosion detector consists of sensor coil and sensing head, signal processing unit, data communication system, motor driver and controller, u-processors and power supply. After considering operation and manipulation in the field, motor, battery and wheels were selected and designed in order to reduce the weight of corrosion detector. Programs for u-processors, measurement program operated in a PC were also developed. Before testing the corrosion detector in the field, several experiments were carried out in the laboratory for artificial corroded samples. Sensor performance, mechanical tests such running ability and weight, and RF data transmission as well as measurement program were examined. After testing a simple corrosion detector system in the laboratory, several filed tests were carried out in practice transmission lines installed in domestic area. Finally, the suggested corrosion detecting system shows an effectiveness to detect local corrosion in acted conductor in practice.

계지의 항염 효과에 관한 연구

박히준,이지숙,이재동,김남재,표지희,강전모,최일환,김수영,심범상,이제헌,임사비나 EAST-WEST MEDICAL RESEARCH INSTITUTE KYUNG HEE UNI 2005 東西醫學硏究所 論文集 Vol.2005 No.-

Objectives : Cinnamomi Ramulus (CR), the young twing of Cinnamomi loureirii nees, has been used for treating symptoms related to pain. rheumatic arthritis and inflammation in Korean herb medicine. This study was carried out to investigate the anti-inflammatory effect of CR in vivo and in vitro. Methods : Extracts of CR were prepared and the chemical components of the extracts were examined by gas chromatography-mass spectrometry (GC-MS). The extracts were administrated to the rat paw edema model induced by carrageenan to evaluate the anti-inflammatory effect of CR. The expressions of nitric oxide (NO). prostaglandin E2(PGE2), inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX)-2 were also quantified in lipopolysaccharide (LPS)-induced RAW 264.7 macrophages to survey the effect of CR in vitro. The main components were cinnamaldechyde and coumarin. Results : We examined the anti-inflammatory activity of the 80% ethanol extract of Cinnamomi Ramulus in vivo by using carrageenan-induced rat paw edema model. Maximum inhibition of 54.9% was noted at the dose of 1000㎎/㎏ after 2 hours of drug administration in carrageenan-induced rat paw edema and this showed a potent anti-inflammatory effect. Conclusions : The results showed that Cinnamomi Ramulus suppressed dose-dependently LPS-induced NO production in RAW 264.7 macrophages and also decreased iNOS protein expression. Cinnamomi Ramulus also showed a significant inhibitory effect in LPS-induced PGE2 production and COX-2 expression.

휘안광의 부선특성에 관하여

박경호,오재현,곽창섭,심원석 연세대학교 산업기술연구소 1980 논문집 Vol.12 No.2

The authors investigated thoroughly the flotation characteristics of stibnite. The flotation behavior of this mineral was carried out by using modified hallimond tube with various xanthates as a collector and modifying agents such as copper sulphate, lead acetate, sodium sulfide, zinc sulphate, sodium cyanide, sodium sulfite and potassium dichromate. The main results obtained in this experiments are summarized as follows; (1) Stibnite shows that it has maximum floatability in pH range 4.0 to 8.0. (2) Stibnite is activated by copper sulphate and lead acetate. (3) Potassium dichromate is an effective depressing agents in stibnite-xanthate system in pH range 4.0 to 6.0. (4) In the pH range in which the zinc sulphate is preciptated by hydroxide, stibnite is depressed effectively (5) Stibnite is depressed by sodium sulfide in alkaline solution.

역률 개선 장치를 이용한 마이크로프로세서의 교육적 활용방안

정태선,장석구,심재명 大田産業大學校 2002 한밭대학교 논문집 Vol.19 No.-

As increasing the power demands, we can take the advantage in reduction of power loss, voltage drop, loss of transformers and distribution line, while we use reasonably the energy which is limited by the insufficient supply of energy resources and the high power rates. So industrial field is increasing the facilities of capacitor bank for active power and the reduction of the power loss. This paper improve the working domain by searching the optimal value of Xc in load circuit, as detecting different between voltage phase and current phase which is supplied to load by using PT and CT. Also, this paper can aid learners understand easy Power factor measurement and improving method by using phase relation between voltage and current, compose method of capacitor bank, and processor on the educational field.