불명열의 임상적 연구 : 열성질환 진단의 복부전산화단층촬영의 유용성 The role of abdominal computed tomography in fever of unknown orgin

심영수,박석건 최신의학사 1984 最新醫學 Vol.27 No.5

더덕의 효율적인 재분화 및 뿌리발달

심주선,조숙녀,손화,김무성,노영덕,김세영,양덕춘 경희대학교식량자원개발연구소 2005 硏究論文集 Vol.24 No.-

더덕은 식용, 관상용, 생약재료로 쓰이는 방향성 식물이다. 본 연구는, 종자의 기내배양을 통하여 식물체 재분화와 뿌리발달을 실험했다. 종자의 발아는 GA_(3) 100 mg·L(-1)처리와 저온처리 시 매우 양호하였다. 더덕의 기내에서 shoot의 형성은 2 mg·L^(-1) BA, 2 mg·L(-1) NAA가 첨가된 MS 기본배지에서 가장 양호하였으며, 줄기의 절편체와 비교하여 잎 절편체에서 재분화가 잘되었다. 또한 뿌리의 발육은 계속적인 계대배양에 의해서 양호하였는데 shoot의 길이를 1 cm 정도 남긴 뿌리를 연속적으로 4회 계대배양에서 뿌리가 주근으로 발육하였으며 길이는 약 3 cm 및 직경은 0.5 cm의 정상적인 뿌리를 얻을 수 있었다. Codonopsis lanceolata is widely used as edibles, ornamental plant and crude drug material. This study was carried out to confirm the ratio of germination and efficient differentiation of shoot and root in vitro. The germination of Codonopsis lanceolata seed was excellent in the medium with GA_(3) 100 mg·L(-1) and chilling treatment. The shoot formation of Codonopsis lanceolata was good at the MS medium with 2 mg·L(-1) BA and 2 mg·L(-1) NAA. According to inoculum part, ratio of re-differentiation was higher from the leaf explant compared with the stem explant. For root development, successive subculture with 1 cm shoot of upper part from root was efficient. Roots of Codonopsis lanceolata cultured in vitro system was grown like normal root with length of 3 cm and thickness of 0.5 cm at the 4 successive subcultures.

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%

출혈성 소화성 궤양의 장기 재발률

심기남,정훈용,양석균,홍원선,박의련,박무인,김해련,민영일 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2

Background/Aims: Bleeding from a peptic ulcer is one of the common and serious complications associated with the rate of reported mortality, which ranges from 5% to 10%. Endoscopic therapy is effective in controlling active bleeding and reducing the emer-gency surgery, the immediate mortality rate and the incidence of early rebleeding. But few recent studies have documented the long-term recurrent bleeding rate after discharge in patients with bleeding peptic ulcers. The aim of this study was to determine the long-term recurrent bleeding rate and factors predisposing to recurrent bleeding. Methods: Eighty-eight patients with bleeding peptic ulcers discharged after medical treatment between Dec. 1990 and Jul. 1992 were included in this study and retrospectively followed up with medical records and telephone interviews. The end point of follow-up was recur-rent hemorrhage, surgery for treatment of ulcer complication, or death. Results: By July 1997, retrospective follow-up was available in 76 patients. Recurrent bleeding occurred in 23 patients (30.3%) with bleeding peptic ulcers and the median follow-up period was 69 months (range, 1 ∼79 months). The estimated cumulative recurrent bleeding rate after 1, 2, 3, 4, 5 and 6 years was 11.8%, 14.5%, 19.9%, 24.2%, 27.2% and 34.2%, respectively. There was no difference between the recurrent bleeding group and the non-recurrent bleed-ing group according to age, sex, prior NSAIDs use, previous history of bleeding or pepticulcer, site of ulcer, stigmata of recent hemorrhage at initial examination, method of treatment and amount of transfusion. Conclusion: Recurrent bleeding occurred in one-third of patients with bleeding peptic ulcers after 6 years of follow-up and one-third of recurrent bleeders rebled within 1 year. The factors predisposing to recurrent bleeding in the long-term follow-up could not be found. Therefore, further studies designed to identify factors predisposing to recurrent bleeding are needed and the evaluation of Helicobacter pylori status in bleeding pepic ulcer is needed because Helicobacter pylori is an important factor of peptic ulcer recurrence.

정형외과 환자의 관여도에 따른 병원급식 만족도 분석

심은영,윤석권,홍완수 대한영양사협회 2004 대한영양사협회 학술지 Vol.10 No.2

The purposes of this study were to evaluate the quality of hospital food services in view of patients in orthopedic wards and accomplish the quality improvement in hospital foodservice operations. Quantitative questionnaires for patients containing foodservice satisfaction and demographic information were developed. A survey of 8 general hospitals was undertaken and detailed information was collected from 290 patients in orthopedic wards. The collected data were processed using the SAS PC 6.12 for descriptive analysis and t-test. In demographic information of patients, 32.6% was over 50 years old and 3 1% was hospitalized over 30 days. 80% of patients was taking normal diet. 47.7% and 47.9% of patients showed moderate appetite and moderate pain respectively. The overall satisfaction score for patients was 3.24 out of 5, showing slightly higher level than the average score(3.00). According to foodservice involvement scores of patients, they were divided into two groups which were high involved group and low involved group. Two groups showed significant differences in taste of meals, variety of menu, punctuality of meal times, temperature of meals and portion size. The foodservice involvement factor which affected significantly patient foodservice satisfaction was 'kindness of foodservice staff'.

강상판 접합부의 피로균열 진전 시 STOP HOLE의 효과에 관한 연구

이문규,심낙훈,박영석 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

Orthotropic steel decks are used in long span and moving bridges because of their high strength to weight ratio. However the decks are subjectde to high dynamic stresses due to wheel loading by heavy goods vehicles so that they have to be assessed for fatigue cracking. The fatigue assessment of orthotropic decks is excluded from most bridge design codes because of the complexity of the stress distribution and the fact that bending stress may predominate whereas weld classification tables are based on axially. Orthotropic steel decks are very sensitive to fatigue damage because they are directly subjected to the actions of wheel loads which give rise to stress ranges which are high compared to the dead load stresses especially if the surfacing is thin. The cracking that devel9oped was caused by large imperfections that were fabricated in short transverse groove connections. To stop the crack development, Stop hole should be excavated. The purpose of this paper, serviceability was approved by comparing surveyed data and stress distribution by structural analysis around stop hole and confirmed by minimized stress due to the size of stop hole. Also, stress distribution around scallop was computed by structural analysis modelled as actual steel bridge, Gul-Hyun Grand Bridge.

쌍각 자궁과 동측의 골반성 발육부전신이 동반된 질개구 이소성 단일요관 1례

신준영,박성재,변동원,이상훈,정호준,심봉석 梨花女子大學校 醫科大學 醫科學硏究所 2002 EMJ (Ewha medical journal) Vol.25 No.2

A case of a female subject with a unilateral vaginal ectopic ureter associated with a single system, ipsilateral hypoplastic pelvic kidney and bicornuate uterus is reported. Although there are many reports of concomitant urinary and reproductive system malformations, a review of the literature shows these unique associations in the same patient to be extremely rare. This malformation is not limited to any combination of abnormal development of the mesonephric(wolffian) and paramesonephric(mllerian) ducts in the development of the urogenital system. Embryological aspects as well as clinical presentation, diagndstic approach and treatment applicable to this case are discussed.

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.

초속경 무수축 모르터를 사용한 궤도 자갈도상의 콘크리트화에 대한 연구

정양욱,심낙훈,박영석 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

Recently, the use of concrete structures has caused renewed interest in behavior of reinforced and prestressed concrete structures subjected to cyclic loading. As a result of these innovative concrete constructions, many of the special considerations concerning fatigue of concrete structures are now being addressed. Concrete structures subjected to a large number of repeated loading will experience an increase in deflections and crack-width. This study presents the stability and serviceability of the railway slab structure when the coarse aggregates are mixed with Rapid Hardening Mortar. Flow test, uniaxial compression test, and concrete4 fatigue test are performed in the laboratory. The tests results show that initial strength of Rapid Hardening Mortar is superior to regular mortar and strengthening effect of Rapid Hardening Mortar mixed with coarse aggregates is excellent when it will be applied to the used railway structure.

근대성과 기술의 풍경

김상호,심용석 大邱大學校 社會科學硏究所 2004 社會科學硏究 Vol.12 No.1

This study explores the relationship of modern technological development and science with the backdrop of modernity. As we learned from the scholars such as Foucault, Deleuze and Ellul, all modern technology are the realization of modern desires. Based on the factual stories on industrial revolution, this study investigates the meaning of modern technological developments. In this investigation, we can notice the obsession of scientific objectivism modern scientist had and the inclination for the notion of 'progress.' Based on the scientific obsession and the inclination for progress, modern society made their way to the full development of capitalistic society, and in tern the developed capitalistic society made rooms for the specified development of modern technology. Thus, modern society use technology and science as a vehicle for reflection and self-reflection, as a basis for thinking about themselves, about others and about the world to which they belong. With the advent of modern societies and technologies in the medieval and early modern periods, a systematic cultural transformation began to take hold.