위 (胃) 내시경 (內視鏡) 검사 (檢査) 14 , 389 예에 대한 임상 (臨床) 연구

함준수(Joon Soo Hahm),박경남(Kyung Nam Park),이민호(Min Ho Lee),이성준(Seong Joon Lee),오수철(Soo Chun Oh),한덕호(Duck Ho Han),이종철(Jong Chul Lee),기춘석(Chun Suhk Kee) 대한소화기학회 1985 대한소화기학회지 Vol.17 No.1

N/A Clinical studies were carried out on 14,389 cases who had taken gastrofiberscopic examination, biopsy and X-ray from May, 1969 to May, 1984 in Han-Yang University Hospital. The results obtained were as follows; 1) Of total 14,389 cases, 7,916 were male and 6,473 were female. 55.1%, of the cases were in the 3rd and 4th decade. 2) Of total 14, 389 cases, 13, 615 showed abnormal endoscopic findings. In abnormal cases, male to female ratio was l.2: l.3) The incidence of single organ involved was 84.8% and multiple organs involved was In single organ involved cases, the most common site of disease was stomach and in multiple organ involved cases, the prevalent sites of lesions were stomach and duodenum. 4) The most frequent disease of stomach was gastritis followed by gastric ulcer. In the cases of duodenum, the most common disease was duodenal ulcer and the next was duodenitis. 5) The most prevalent disease was the chronic gastritis, and the frequency of the other upper gastrointestinal diseases was acute gastritis, gastric ulcer, stomach cancer and duodenal ulcer in orders. 6) The most frequent type of chronic gastritis was superficial gastritis. 7) Among the total cases which had been taken blood-typing, the incidence of most upper gastrointestinal diseases was not related to each blood type. But blood group 0 was common in peptic ulcer disease and blood group A in stomach cancer. 8) The clinical symptoms and signs were of no significant aid for the differential diagnosis of the various upper gastrointestinal diseases.

혼화재 종류별 온도 변화에 따른 콘크리트의 응결 및 강도발현 특성

주은희,손명수,차천수,한민철,김성수,한천구 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

The objective the paper is to investigate the physical and mechanical properties of concrete incorporating mineral admixtures. For setting properties, at low curing temperature, setting time of concrete with mineral admixture is delayed compared with that of plain concrete. But, use of cement kiln dust(CKD) has a desirable effect on reducing setting retard under low curing temperature. For compressive strength, concrete with FA and BS have low strength at early stage compared with that of plain concrete under low curing temperature. However, the use of CKD resulted in an enhancement of compressive strength at early stage under low curing temperature, and exhibited a similar level of compressive strength with plain concrete. For this reason, use of CKD in cold weather concreting has positive effect on strength development at low curing temperature under early age.

혼화재 종류별 온도 변화에 따른 시멘트 모르터의 응결 및 강도발현 특성

주은희,손명수,차천수,황인성,김성수,한천구 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

In this paper, setting and strength development of cement mortar are discussed under various mineral admixture content and curing temperature. Setting time exhibited an increasing tendency with an increase in curing temperature. Under low curing temperature, use of CKD resulted in a reduction in setting retarding, whereas FA and BS retarded the setting time of cement mortar. For compressive strength, high curing temperature and age leaded to an increase in compressive strength of concrete. Under low curing temperature, the use of CKD resulted in an enhancement of compressive strength at early stage, and exhibited a similar level of compressive strength with plain concrete. For this reason, use of CKD in cold weather concreting has positive effect on strength development at low curing temperature under early age.

除草劑 Perfluidone의 作用特性에 관한 硏究

韓成洙 圓光大學校 1986 論文集 Vol.20 No.2

除草劑 perfluidone에 對하여 除草作用特性, 雜草와 水稻의 吸收特性 및 植物生理作用에 미치는 影響을 檢討하여 本劑의 作用特性을 明白히 하고 作用機構에 關한 基礎資料를 얻고져 一連의 實驗을 행하여 다음과 같은 결과를 얻었다. Perfluidone은 一年生雜草 大部分과 多年生雜草中 올미, 가래, 너도방동사니, 매자기, 올방개, 올챙이고랭이 等에 대하여 우수한 殺草效果가 있었으며, 버들여뀌와 벗풀은 比較的 抵抗性을 나타냈다. 水?種子의 發芽率은 perfluidone 100ppm의 高濃度에서도 80% 以上이었으나 發芽後의 生育은 甚하게 抑制하여 3ppm에서도 草長은 45%, 根長은 70%의 沮害를 보였다. 올미 ??을 perfluidone 溶液에 浸績시키는 時間이 길면 길수록 올미의 生長은 더욱 더 抑制되었다. Perfluidone은 主로 根部에서 吸收되나 ?葉部에서도 약간은 吸收되는 것으로 나타났다. 雜草와 水稻間 ?C-perfluidone 吸收量은 雜草가 水稻보다 2培 以上 많았고 部位別 分布를 보면 地上部보다 根部가 2培 以上이었다. 本劑는 種字發芽過程中 gibberellin ?起 α-amylase 및 protease 生合成을 顯著하게 抑制하였다. 그러나 水稻의 呼吸量, 根活力을 비롯한 chlorophyll 生成, Hill反應, 全糖 및 澱粉生成에 거의 影響을 미치지 않았으나 蛋白質生合成은 甚하게 抑制하였다. perfluidone의 除草效果는 日當 ?水量이 增加될 때와 藥劑處理後 24時間 以內에 地表水移動이 있을 때 그리고 多年生雜草의 發生深度가 깊을 때 크게 低下되었다. 多年生雜草의 ?C-perfluidone 吸收量은 올미가 가장 많았고 다음은 벗풀, 올방개의 順으로 많았으며 發生深度가 깊어질수록 顯著하게 적어졌다. 水劑 3~4葉期의 苗를 供試하여 藥害安全性을 檢討한 製品量으로 10a當 2kg의 藥量에서는 大體로 安全하고 그 以上으로 藥量이 增加되면서 藥害는 增大되었지만 16kg prod./10a 水準에서도 30%의 減收만을 나타냈다. 藥害는 移秧深度가 낮을수록 增加되는 傾向이었으나, 日 ?水量이 增加될수록 그리고 藥劑處理後 72時間 以內에 換手가 되면 減少되었다. ?C-perfluidone의 吸收量은 水?移秧深度가 0cm인 ?植區에서 가장 많았고 移秧深度가 깊어짐에 따라 減少되었다. The herbicidal properties of perfluidone [1, 1, 1-trifluoro-N-2-methyl-4-(phenylsulfonyl) phenyl methanesulfonamide] were investigated. Perfluidone controlled effectively paddy weeds : most of annuals and many troublesome perennials such as Sagittaria pygmaea MIQ., Potamogeton distinus A. BENN, Cyperus serotinus ROTTB, Scirpus maritimus L., Eleocharis kuroguwai OHWI., and Scirpus hotarui OHWI. whereas Sagittaria trifoliz L. and Polygonum hydropipper SPACH. were tolerent to perfluidone. With perfluidone treatment germination of rice over 80% was obtained at the concentration of 100 ppm, but the growth of rice seedlings was severely inhibited even at 3 ppm, resulting in 45% and 70% reduction in plant height and root length after germination, respectively. The longer the dipping time in perfluidone solution prolonged, the greater the growth inhibition of Sagittaria pygmaea occurred. Perfluidone was absorbed primarily by the root and secondarily by the shoot of rice seedlings. The absorbed amount of ?C-perfluidone from the treatment solution was about two times greater in the weed species than in rice and grater in the underground organs than in the aboveground parts in the two species. Perfluidone inhibited severely the synthesis of gibberellin induced α-amylase and lowered the level of protease in the germinating rice seeds. The chemical did not affect respiration, root activity, chlorophyll synthesis, hill reaction, and content of total suger and starch in the rice seedlings. However, protein synthesis was greatly inhibited by perfluidone. The weeding efficacy of perfluidoe decreased with the increased leaching or the overflowing of irrigated water within 24 hours after the herbicide application. When the perennial weeds were shown at the deeper soil layer, the weeding efficacy decreased. The absorbed amount of ?C-perfluidone from soil was greater in Sagittaria pygmaea than in Sagittaria trifolia, while Eleocharis kuroguwai absorbed much less ?C-perfluidone than the two weed species. Deep placement of the weed propagules in the soil resulted in less absorption of ?C-perfluidone than in the shallow placement. At the rate of 2kg prod./10a, perfluidone did not cause any injury to the 4th leaf stage rice seedlings. Although the crop injury increased with the increased applicatioin rate, the injury caused by perfluidone at the rate of 16kg prod./10a gave rise to only 30% rice yield reduction. The crop injury decreased when the leaching of water increased and the irrigated water overflowed within 72hours after the application of perfluidone. This chemical showed greater crop injury at 0 and 1cm transplanting depths than 2 and 4cm transplanting depths from the basal part of shoot. The greatest amount of ?C-perfluidone was detected with rice planted at the transplanting depth of 0cm and the amount decreased as the transplanting depth increased.

혈관모세포종의 임상 분석

김은성,강삼석,이정길,김태선,정신,김재휴,김수한,이제혁 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.5

포도 중 Tebuconazole의 잔류성에 미치는 몇 가지 변동요인의 영향

한성수,노석초,마상용 한국환경농학회 2004 한국환경농학회지 Vol.23 No.3

Tebuconazole의 안전성 평가를 위한 기초자료를 얻기 위하여 tebuconazole의 처리시기, 처리횟수, 봉지 씌우기(괘대) 및 세척방법에 따른 잔류성을 조사하였다. 수확 전 처리횟수가 3회~5회 처리로 증가함에 따라 tebuconazole의 잔류량이 높게 나타났으며, 처리횟수가 동일한 조건에서는 최종 처리후 경과일수가 길수록 잔류량이 적게 나타났다. 처리횟수 및 최종 처리 후 경과일수가 동일하더라도 최초 약제처리 시기에 따라 잔류량의 차이가 나타나 기상 조건 및 과실의 생육상태에 따른 잔류량 변동 가능성이 시사되었다. 과실 1개당 무게가 2.5~7.5 g의 범위에서 과실 개체의 크기가 작을수록 높은 잔류량을 보였으며, 잔류성분의 대부분이 과피에 분포하였다. 괘대 과실의 과피에서 무괘대 과실의 과피에 비하여 매우 낮은 잔류량을 보였다, 과육 중의 잔류량은 괘대 포도에서는 검출한계 이하로, 무괘대 포도에는 0.05 mg/kg 수준으로 분포하였다. 세척 전의 잔류량이 0.86 mg/kg 수준인 포도 시료에서는 물에 1분간 침지하고 흐르는 물에 1~2회 세척 시에 잔류량의 약 25~67%가 제거되었으며, 침지처리 후 3회 세척한 시료에서는 검출한계 이하의 잔류량을 보였다. 세제용액에 침지하고 흐르는 물에 세척한 경우에는 물 침지에 비하여 높은 제거효과가 나타났으며, 세척 전 포도 중의 잔류량이 낮을수록 제거효과가 높게 나타났다. Dissipation pattern of tebuconazole was evaluated by establishing application methods of the fungicide, paper-bagging of grape during growth and washing of grape after harvest. Application times increased from three to five resulted in high levels of residues in grape. Tebuconazole in grapes was present in different residual patterns with periods after final treatment, ranging from 7 to 25 days. Significant differences in the residual patterns were also found when tebuconazole was treated during three different application periods, possibly due to meteorological condition and/or grape growth during each period. At the range from 2.5 g to 7.5 g of grape granules, residues were higher in small-sized grape than in big-sized grape and were mostly distributed on the peel of the grapes. Paper-bagging was a critical factor for reducing the fungicide residue on the peel. Flesh of bagged and no-bagged grape had very low level of residues, 0.01 mg/kg and 0.05 mg/kg, respectively. Residues on grape was effectively eliminated with the washing methods suggested, a consecutive sinking-washing system. Using of detergent solution during washing showed maximum residue reduction from grape. The washing methods showed effective action on the removal of lower content, providing complete elimination, or almost, of the residues.

OLT의 QoS 기능 구현

한성수,이순흠,이병수 순천향대학교 부설 산업기술연구소 2005 순천향 산업기술연구소논문집 Vol.11 No.2

In this paper, Implemented QoS functions are described which are key functions of OLT in the implemented EPON system which is considered currently as a economical solution of FTTH. The implemented QoS functions use L2/L3/L4 header information and provide different services and quality

하악골 후방이동시 중안면부 연조직의 변화양상에 대한 임상통계학적 연구

한대희,김수남,민승기,김태성,성헌모 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.3

Prediction of the soft tissue changes following hard tissue movement is very important from the esthetic view point for patients who have orthognathic surgery. There are many cephalometric analysis of facial bone and soft tissue on the lower lip and chin region but few soft tissue analysis on the midface after mandibular setback surgery. This study was performed to obtain whether the mandibular posterior movement has influence on the midface and the predictable ratio of post-operative measurement values of the soft tissue changes following mandibular setback surgery. Fifteen patients (8 males and 7 females) who had undergone mandibular setback surgery were selected and analyzed the soft tissue movement on the upper lip and the cheek region. Post-operative changes of the soft tissue measurements after mandibular surgery were examined on pre- and post-operative cephalo-metrics and the ratio of changes were analyzed after drawing the reference line on the face with the barium sulfate solution. The reference lines were perpendicular to the intercanthal line from infraorbital foramen and lateral canthus. The results obtained were as follows : 1.There were tendancy of anterior movement of soft tissue adjacent the nose after mandibular surgery 2.There were incerased tendancy of the amount of anterior movement from the nasal crease to the cheek region. 3.The amount of anterior movement of the soft tissue was larger below the palatal plane compared with above the palatal plane in the cheek region. 4.The upper lip length was increased and moved posterior direction after mandibular setback surgery 5.The lower lip was moved posterior direction by posterior movement of the mandibular structure 6.Soft tissue of the midface around the nose moved anterior direction after mandibular setback surgery but there was no correlation between the amount of mandibular setback and the amount of the soft tissue changes

전력계통의 전압붕괴에 관한 연구

한성문,왕용필,정형환,주수원 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1

This paper analyzed the static voltage collapse phenomenon and the dynamic voltage collapse phenomenon by means of fluctuations of active-reactive power and the fluctuations of active power offered an output from the load bus respectively. The results are summarized as follows 1. In static state, the voltage collapse value can be computed by applying the equilibrium equation of active- reactive power to Jacobian, the bifurcation point can be also found. 2. The voltage collapse broke out by the reactive power loss and it is found that the active power has an effect on the voltage collapse phenomenon. 3. When a disturbance is given to the active power of the infinite bus voltage side, it is showed that a voltage is collpased by change of the load angle and the current in a dynamic fuctuation of the transient internal voltage E'_(q), E'_(d).

치아재식후 치유과정에서 fibronectin의 분포에 관한 면?조직화학적 연구

한휘철,김현수,주성숙,신제원 慶熙大學校 齒科大學 1995 慶熙齒大論文集 Vol.17 No.2

Periodontalhealing requires the formation of new periodontal tissues comprised of various extracellular components. The present study investigated the formation and distribution of the fibronectin FN), a major adhesive glycoprotein. Rats weighing 130`150 gm were fed 0.4% R -aminopropionitrile for 5 days to achieve gentle tooth extraction. The maxillary first molars were extracted under anesthesia with pentobarbital, washed in sterile distilled water, treated with bacterial collagenase to digest collagen fibers on the root surfaces. After washing in water overnight, the mesial root surfaces were demineralized by application of citric acid, washed, dried and stored at 4 t. Immediately after tooth extraction and bleeding control, the treated molars extracted previously from other rats were reimplanted. Ten animals each were sacrificed 45 min, 1, 3, 6, 10 days after reimplantation of teeth by intracardiac perfusion with 4% paraformaldehyde. The replanted molars and surrounding tissues were cut, demineralized, dehydrated and embedded in paraffin. Imrnunostaining of the FN was achieved by the avidin-biotin complex method. The results as follows; 1. The control group showed gradual healing from 1 day and complete regeneration of the periodontium at 10 days. 2. At early healing stage, intense staining for FN was observed in the newly formed connective tissues, granulation tissue, especially around blood vessels as well as inflammatory cells. 3. At later healing stage, FN was expressed later in the periodontal ligament, cementum, osteoid, and newly formed connective tissue and its attachment site to the root surface. 4. Strong immunolabeling for FN was found in cementoblasts, osteoblasts, and new bone and cementum, which weaken staining was observed on the dentin and alveolar bone. 5. These results suggest that the healing after replantation is achieved through a series of cell differentiation and formation of FN.