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어성초추출물투여가 흰쥐의 간장과 혈청의 지질 및 과산화지질함량에미치는 효과
최용순 한국자원식물학회 1998 한국자원식물학회지 Vol.11 No.2
The feeding effects of Herba hottuynia extracts on the lipids profiles and the content of TAB-reactive substances were evaluated in rats fed a high cholesterol diet. Hot water or ethanol extracts of the dried leave were evaporated and lyophilized . The experimental animals wer edevided to four groups and fed the following diets for 4 weeks : BAsal (cholesterol-free diet), CHOL(cholesterol-enriched diet),CW (cholesterol plus water extract) and CE(cholesterol plus ethanol extract). Dietary cholesterol increased significantly the activities of serum GOT and GPT, but the extracts feeding (0.5% of diet) did not influence the activities induced by dietary cholesterol. Although dietary cholesterol increased significantly the concentrationof serum andliver cholesterol, it tended to decrease the concentation of serum triglycerides. CHolesterol feeding had a lowering effect on the lipid peroxidation value of serum, but not inliver.Furthermore, the extracts feeding, especially water extract, decreased markedly the liver peroxidation value. The results suggest that Houttyunia cordata extracts have an in vivo antioxidant effect, judged from the TBA value in the liver rats fed a high cholesterol diet.
형태학적 형질과 분자 표지들을 이용한 콩 유전자원의 분류
최용순,김남수,신영범,최익영,임성희,김두환 한국유전학회 2000 Genes & Genomics Vol.22 No.2
Detection and characterization of genetic diversity in germplasm are the critical steps for crop improvement. We have analyzed the genetic variation in a set of 108 different soybean accessions with agronomic traits and molecular markers, and tried to detect the association between the molecular diversity and agronomic trait variation. 10 agronomic traits including plant height, leaf shape, number of branches per plant, number of nodes per plant, number of podes per plant, 100-seed weight, days to flowering, days from flowering to maturity, days to maturity, and crude oil content showed high variation among the soybeans. Genetic correlation among traits was also sought. Plant height and 100-seed weight showed significant correlation coefficient with many other traits. In principal component analysis, 70% of the total variation were accounted by the first 4 principal components and days to maturity among ten agronomic traits took the largest proportion of the variation. The 108 soybean lines were grouped into 12 clusters at the minimum similarity of 0.815 with Simple Sequence Repeated DNA Polymorphism (SSRP) and Amplified Fragment Length Polymorphism (AFLP) markers. The clustering pattern did not permit the grouping of the soybean lines according to their geographic origins. In an attempt to associate the variation of agronomic traits with the molecular diversity, except for the number of pods per plant, the other nine agronomic traits showed highly significant differences between one or more of the molecular subclusters at the Least Significant Difference (LSD) level of 5%. Although most of the studies on the association of the agronomic traits with the molecular markers were done with the molecular maps, our attempt could provide another mean for detecting the association of the agronomic trait variation with molecular diversity.
PC-Crash를 이용한 SUV의 전복사고 거동 및 충돌속도 예측에 관한 연구
최용순,백세룡,정종길,조정권,윤준규 한국인터넷방송통신학회 2018 한국인터넷방송통신학회 논문지 Vol.18 No.2
Along with the recent increase in traffic volume of vehicles, accidents involving rollover of vehicles have been rapidly increased, resulting in an increase casualties. And to prevent this, various technologies such as vehicle crash test equipment and analysis program development have been advanced. In this study, the applied vehicle model is FORD EXPLORER model, and PC-Crash program for vehicle collision analysis is used to predict the rollover accident behavior of SUV and the collision velocity. Compared with the actual rollover behavior of SUV through the FMVSS No 208 regulations, the analysis results showed similar results, the characteristics of the collision velocity and roll angle showed a tendency that the error rate slightly increased after 1000 msec. Then, as a result of considering using the database of NHTSA, it is shown that the rollover accident occur most frequently in the range of the collision velocity of 15~77 km/h and the collision angle of 22~74°. And it is possible to estimate the vehicle speed and collision time when the vehicle roof is broken by reconstructing the vehicle starting position, the roof failure position and the stop position by applying the actual accident case. 최근 자동차 교통량의 증가로 인해 차량 전복사고가 급증하여 이에 따른 인명피해가 증가해왔으며, 이를 방지하기 위한 차량충돌 실험장비 및 해석프로그램 개발 등의 다양한 기술이 진보되고 있다. 본 연구에서는 적용한 차량모델은 미국 FORD사의 EXPLORER 차종이고, Rollover 해석은 차량충돌해석에 상용되고 있는 PC-Crash 프로그램을이용하여 SUV의 전복사고 거동 및 충돌속도를 예측하였다. 그 해석결과로 FMVSS No. 208 법규를 통한 SUV차량의실제 Rollover 거동과 비교할 때 유사한 결과를 보여주었으며, 충돌속도 및 롤각의 특성은 1000 msec 이후부터는 다소 오차율이 커지는 경향을 나타냈다. 그리고 NHTSA의 데이터베이스를 활용하여 고찰한 결과로 충돌속도 15~77 km/h, 충돌각도 22~74° 범위에서 전복사고가 가장 많이 발생함을 나타냈고, 실제 사고사례를 적용함으로써 차량 출발위치, Roof 파손위치, 정지위치를 재현시켜 차량 Roof가 파손될 때 차량속도 및 충돌시간을 예측할 수 있었다.
LS-DYNA 해석을 통한 SUV의 충돌인자에 따른 Roof Crush 평가 예측
최용순,김천호,김성호,윤준규 한국기계기술학회 2018 한국기계기술학회지 Vol.20 No.5
Recently the incidence of rollover accidents has increased due to the increase of SUV, and the probability of occupant injury in rollover accidents is very high, so research is needed accordingly. In this study, PC-CRASH, which is a program used for traffic accident analysis, is used for checking rollover speed and rollover angle of each situation in case of rollover accident, and applied to design variables of LS-DYNA which is finite element analysis program, so deformation displacements of roof according to collision velocity and angle were derived. Also, it is possible to predict rollover vehicle speed by using the derived value and the measured deformation displacement of roof in actual rollover accident, and it is possible to reconstruct accident more accurately by applying to PC-Crash which is traffic accident reconstruction program, so it is thought that it can be utilized analyzing traffic accident usefully.
주택단지조성시 배수불량으로 인한 수목피해에 관한 연구 -평택 아파트단지를 중심으로 -
최용순,심경구 한국조경학회 1995 韓國造景學會誌 Vol.23 No.2
This study is focused on the groping for the alternative ways in order to prevent the various bad factors caused by the Inferior environment on the planted trees. In the reclaimed paddy field which is planned to make a housing site, for example, we are trying to catch the problem about the special feature of the unharmonized drainage. And the survey gives the suitable way of planting trees. This survey was carried out in the three different area and could notice some phenomena : There are a few different conditions for water supply int\ulcorner the soil according to the height of the land-filling from the original ground and the slope of the planting area. And the imporant factor of the drainage effect is not the soil texture itself but the depth of the filling land. As a result of this survey, the study shows the economic alternative for reducing the demage of the planting trees which is due to drainage system.