크론병에 대한 CoPPLX의 방어효과에 대한 연구

이호학,김유림,문창기,이재일,양병윤,김종수,이정민,정재혁,안석진,박상준,김윤권,김소연,김영중,조민구,최영자,장성조 圓光大學校 醫科學硏究所 2005 圓光醫科學 Vol.20 No.1

내시경적 조직검사로 진단된 위 분선충증 1 예

이석호,이화영,이규택,강인구,최규완,백승운,이종균,이준혁,고광철,이종철,오영륜,현재근,이풍렬,김재준,채종일 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2

Strongyloidiasis is a parasitic disease caused by Strongyloides stercoralis which exists in two forms : the free living and parasitic forms. It exists in warm, moist climate in areas where there is frequent fecal contamination of the soil. After cutaneous invasion by the filariform larvae, petechial hemorrage, pruritus, papular rashes, edema, and urticaria occur. Infection commonly occurs in the proximal intestine of the gastrointestinal (G-I) tract but may extend from the stomach to the anus. Once the worm is established in the small intestine, the physical findings may include epigastric tenderness to palpation. The mucosal biopsy is an inefficient way of making the diagnosis because the worm is found in the biopsy specimen in only 2% of patients. Gastric strongyloidiasis is rare. We experienced a case of gastric strongyloidiasis diagnosed by the endoscopic biopsy and serologic test for parasite specific IgG antibody by micro-ELISA.

건축공사시방서에서의 KS규격의 국제인증방안에 관한 연구

김경식,이재섭,김용수,이규진,조용훈,최완철,전재열,이현수,구재동,이기환 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this research is make out construction specifications for International Construction. Using off-shore products incur cost increase and longer delivery term of construction. and inconvenient on International Construction. Expand the range of additional local products conforming to performance. Life Cycle Cost. maintainability. operability. user's acceptability, etc.. And this study is suggest the standard formats and the techniques for construction specification.

재생골재 콘크리트의 수축균열 특성에 관한 연구

구봉근,라재웅,이재범,류연종,이현석 충북대학교 건설기술연구소 2003 建設技術論文集 Vol.22 No.2

As concrete is prevented from shrinking freely, tensile stresses develop which frequently result in cracking. Cracks in reinforced concrete structures reduce overall durability by allowing the penetration of water and aggressive agents, thereby accelerating the deterioration of the reinforcing steel. Highway pavement, bridge decks, and industrial floors are especially susceptible to this type of deterioration since these structures exhibit high rates of shrinkage and are frequently exposed to aggressive environmental conditions. The objectives of this investigation included the implement of experimental procedures for assessing shrinkage cracking behavior on recycled aggregate concrete, the selection of replacement rate and mix composition on recycled aggregate concrete. Specifically, the influence of a shrinkage reducing admixture(SRA) and recycled aggregate concrete was investigated. The shrinkage reducing admixture substantially reduces free, shrinkage and restrained shrinkage cracking while providing similar mechanical properties. Restrained shrinkage experiments were developed and shrinkage cracking was shown to be size dependent and recycled aggregate replacement rate. A mechanical properties experiment approach was developed to predict the behavior of a variety of recycled aggregate concrete specimens. This experimentally approach was used to successfully explain experimental results from a variety of mixture compositions and recycled aggregate concrete. This experiment was used to demonstrate the influence of material and structural properties on the potential for cracking.

강섬유로 보강한 재생골재 콘코리트의 강도특성

구봉근,김창운,류택은,이재범,류연종,이현석 충북대학교 산업과학기술연구소 2002 산업과학기술연구 논문집 Vol.16 No.1

This study was performed to investigate the strength characterstics of steel fiber reinforced recycled aggregate concrete. Test specimens were prepared with compressive, split tensile, flexural specimens and tested by ultimate strength. A superplasticizer and fly-ash were added to the mix to improve performance of recycled concrete. Test-variables are substitution of recycled aggregate(0, 30, 50%), steel fiber length(0, 30, 50, 60mm), steel fiber content(0, 0.5, 1.0, 1.5%). Test-specimen were classified by test-variables. The experimental results on the various engineering properties of steel fiber reinforced recycled aggregate concrete using waste concrete are summarized as follows. It was found that the compressive and split tensile strength were proportionally affected by quantities of recycled aggregate substitutions, but flexural strength wasn't. The maximum compressive strength was 392 kgf/㎠( series 4 : R30 L30 V1.0 A20 ), the maximun split tensile strength was 40 kgf/㎠( series 7 : R30 L30 V1.5 A20) and the maximum flexural strength was 62 kgf/㎠( series 7 : R30 L30 V1.5 A20 ).

16주간 근력운동에 따른 국소부위 골밀도의 변화와 상관관계 특성

이재구,최무섭 한국유산소운동과학회 2002 대한스포츠융합학회지 (jcses) Vol.6 No.1

This study was performed to suggest the effects of mild strength exercise on local bone densities and the correlation characteristics among the various variables, body composition and local bone densities, in middle-aged women. The subjects were volunteered in 16 women being resident in the local community. Their ages were within 47.6±4.8 years. Body composition were analyzed by the Bioelectrical Impedence method(mode1; In Body.1999, Biospace Co. Korea), and local bone densities were measured by DEXA method(PIXI 5108 model, Lunar Co. USA). All subjects performed mild strength exercise, 3 timedweek during 16 weeks, Exercise session were constructured into warm up by walking and stretching 20min. and muscle training on the sites that measure the bone densities during 30 minutes. Results in this study were as following. Body compositions were significantly reduced in muscle volume 2.6% and body fat 3.63% after 16weeks . Local bone densities in the forearm were nonsignificantly 0.73% at 1/3 site and 1.24% at middle site, and ulna distal site was significantly decreased in 4.51% after 16wks. but total bone density in the forearm was reduced 1.4% nonsinificantly in the postexercise. Lumbar site was, also, increased 0.4% without significance at lumbar 2-4 level. All of three femoral sites, however, did increased nonsignificantly 1.58% at neck, 1.06% at greater trochanter, and 5.62% at ward's triangle in the postexercise. Serum calcium and osteocalcin values were significantly higher 13.7%(P=0.0000)and 54.1%(0.01) than before. Weight variable was significantly correlated with a bone density at a femoral neck site(r=0,34,P=0.05) and BMI had the significant correlation with neck(r=0.43,P=0.01) and greater trochanter(r=.44, P=0.01) in femur. Correlation characteristic among local bone densities appeared higher(r=0.41-0.71, P=0.01) between the lumbar and femur sites than those(r=0.38, P=0.02) between the lumbar and forearm sites. there was middle level(r=0.45-0.58, P=0.001.)between forearm and femur site. In conclusion, it was suggested that local bone density in middle-aged women can be increase through mild strength exercise over mechanical stress of ordinary lifestyle during 16 weeks.

특발성 확장성 심근증 환자의 임상적 소견의 관찰 : 남녀 성별에 따른 차이를 중심으로 Comparison of Sex difference

이광희,김철현,최태명,이성우,김성구,권영주,변재호 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.1

특발성 확장성 심근증에 대한 진단 및 연구는 이전에 주로 관혈적인 좌심실조영술이나 부검에 의해 이루어져 연구가 많이 않았으나 최근 심초음파도의 보편적인 이용으로 진단이 용이하여 이에 대한 임상적 연구가 증가되고 있다. 그러나 남녀 성별에 따른 임상적 소견의 차이에 대한보고는 많지 않았다. 대상 및 방법 : 특발성 확장성 심근증으로 진단받은 환자 68명(남자 37명, 여자 31명)을 대상으로 임상적 소견과 심전도 및 심초음파 검사소견등을 남녀간에 비교 분석하였다. 결 과 1. 유병기간은 여자가 남자보다 유의하게 길었고(p<0.05), 호흡곤란, 심계항진 및 심부전의 빈도는 여자에서 더 많은 경향을 보였으나 통계적으로 유의한 차이는 없었다. 2. 심초음파도상 좌심실 이완기말 내경계수, 심실중격 두께 계수, 좌심실 후벽 계수, 좌심방 내경 계수는 여자가 남자보다 유의하게 컸으나(p<0.01), 분획단축(fractional shorting)은 양군간에 유의한 차이가 없었다. 3. 심전도상 QRS 기간이 여자가 남자보다 긴 경향이 있었으나(p<0.08) 기타 소견은 양군간에 유의한 차이가 없었다. 결 론 : 특별성 확장성 심근증의 임상적 소견 및 검사 소견의 성별에 따른 분석에서 여자에서 질병의 정도가 더 심한 것으로 나타나는 소견이 있었으나 추후에 더 많은 연구및 원인 분석이 필요할 것으로 사료된다. Background : Idiopathic dilated cardiomyopathy(IDC) is a well recognized condition both clinically and morphologically. Despite the relatively frequency of this condition, few studies focusing on sex difference have been reported. Method : A total of 68 patients with IDC(37 men, 31 women)were studied retrospectively. Certain clinical and laboratory findings were analyzed and compared between men and women. Results 1. The women had a significantly(p<0.05) longer mean duration of chronic congestive heart failure than men. 2. Of the echocardiographic findings, index of left ventricular end-diastolic diameter, interventricular septal thickness, left ventricular posterior wall thicknes and left atrial dimension were significantly higher in women than in men. 3. Duration of QRS complex in ECG was longer in women(p<0.08) conclusion Some of clinical and laboratory findins are more advanced phase in women in IDC.

무선 ATM에서 QoS를 유지하기 위한 TDMA 기반의 슬롯분배 방법 MAC 알고리즘

이기현,최재구 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

Next generation wireless network will be developed as mobile communication which will support ATM-based multimedia traffic. It is desirable to exploit an effective MAC(Medium Access Control) Protocol in order to support multimedia traffic with variety of QoS characteristics on wireless networks. In this dissertation, current multimedia applications are classified by rt-CBR(real-time Constant Bit Rate), voice, rt-VBR(real-time Variable Bit Rate), and nrt(non-real time) services according to real-time or non real time and constant or variant characteristics in the proposed TDMA based MAC Protocol. The proposed TDMA based MAC protocol guarantees the balanced QoS among real time multimedia services with diverse and different traffic characteristics and manages program effectively since the services with same traffic characteristics have their own slot allocation algorithms.

경량 콘크리트를 이용한 온돌 바닥층의 열적 특성 : 진공관형 태양열집열기를 이용한 자갈의 현열축열 특성 Characteristics of sensible heat storage for gravel using evacuated glass tube solar collector

이귀현,구재오 강원대학교 부설 석재복합신소재 제품연구센터 2003 석재연 논문집 Vol.8 No.-

본 연구에서는 공기 가열을 위해 진공관형 태양열집열기를 이용하여 3종류의 자갈에 대한 현열축열 특성을 조사하였다. 74.8%의 집 열효율을 갖는 태양열집열기 내에서 가열된 공기는 자갈로 채워진 죽열조내로 순환되고, 축열조 내의 자갈층에 열을 전달시킨 공기는 다시 집열기로 유입된다. 여기서, 집열기에 의해 가열된 공기의 열을 자갈층에 저장시키기 위한 축열실험은 480분 동안 지속되었다. 자갈의 크기가 열저장 효율에 미치는 영향을 조사하기 위해 축열실험 동안 축열조내의 상ㆍ중ㆍ하부 3위치에서 공기온도를 측정하였다. 제 1ㆍ2ㆍ3종 자갈로 구성된 축열조내 상ㆍ중ㆍ하단부의 평균 공기온도는 축열실험 전보다 각각 6℃, 5.7℃, 5.5℃ 상승한 것으로 나타났다. 즉, 작은 자갈의 축열조내 평균 공기온도 상승이 큰 자갈의 축열조 보다 낮았다. 이것은 작은 자갈일수록 큰 자갈보다 많은 열에너지를 자갈층에 저장하게 됨으로 자갈 주위의 공기온도를 낮게 하였기 때문인 것으로 사료된다. 그러므로 큰 자갈에 비해 작은 자갈일수록 축열조내의 공극이 작고 비중량이 클 뿐만 아니라 열용량이 커 축열 매체로서 매우 유리하게 사용될 수 있을 것으로 판단된다. In this study, the characteristics of sensible heat storage for three kinds of gravel were investigated with using evacuated glass tube solar collector for heating air. Air heated inside the solar collector with heat collecting efficiency of 74.8% was circulated into the heat storage system packed with gravel. After storing heat to gravel inside the heat storage system, air was again circulated into solar collector. An experiment for storing heat from air heated by solar collector to gravel of the heat storage system was repeated for 480min. Temperatures at the bottom, middle, and top positions of heat storage system were monitored to investigate the effect of gravel size on storing heat. Average air temperature of the bottom, middle, and top positions of heat storage system for each 1st, 2nd, and 3rd kind of gravel were increased 6.0, 5.7, and 5.5℃ respectively. Increase of air temperature inside the heat storage system with the smaller size of gravel was lower than that of larger size of gravel. It was suggested that heat was more consumed for storing into smaller size of gravel than that of larger size lowering air temperature around the gravel. Thus, smaller size of gravel is better than that of larger size on storing heat because of its great heat capacity with low porosity of heat storage system and large specific weight of gravel.

포도에 대한 Captafol 수화제의 안전사용기준 설정

李載球,慶箕性,金學南 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.11 No.1

In order to establish the criteria for the safe use of the fungicide captafol on grapes, 12 plots with different spray frequency and different spray time were placed and sprayed on stems and leaves with the captafol wettable powder up to 3, 7, 15, 30, 45, 60 days before harvest. The results of the analysis of captafol residues on the sample grapes were as follows : 1- Recovery values obtained from fortified control samples were 85.3 and 90.0%, respectively, at the 0.1 and 1.0 ppm levels, the detection limits being 0.06 ng(0.015 ppm). 2. Captafol residues were detected in all samples, ranging from 0.25 to 5.79 ppm. 3. Captafol residues had a tendency to become the more, the more spray frequency and the closer spray time to harvest. 4. The captafol residues on grapes were within the maximum residue limits in the samples sprayed 4 times involving those sprayed up to 3 days before harvest, whereas the residues in the samples sprayed 5 times were beyond the limits. 5. It was recommended that the captafol WP should be sprayed on grapes 4 times up to 7 days before harvest.