2축 편심축력을 받는 고강도 콘크리트 기둥의 등가응력블럭 수정

박준용,유석형,반병열,신성우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

The characteristics of stress distribution of non rectangular compressed area in the RC columns are different to those of rectangular compressed area. Nevertheless, in ACI 318-99 code, the design tables for columns subjected to axial loads with bidirectional eccentricities are based on the parameters recommended for rectangular stress block(RSB) of rectangular compressed areas. In this study the characteristics of stress distribution through both angle and depth of neutral axis are observed and formulated rationally. And the modified parameters of rectangular stress block(MRSB) for non rectangular compressed area is proposed. And the computer program using MRSB for the biaxial bending analysis of RC columns in developed and the results of MRSB are compared to RSB and experimental results respectively.

全南地方 飼育乳牛에 있어서 繁殖障害의 實態 및 發生要因分析

朴永埈,康炳奎 全南大學校 農漁村開發硏究所 1972 農業科學技術硏究 Vol.6 No.-

A systemic studies for reproductive and nutritional problems to conduct a herd infertility examinations were performed on one hundred and fourty seven cows in Kwang-ju, Chonnam area during the period from June 1 to August 30, 1971. The examination involves evaluation of breeding history and laboratory tests to make an objective diagnosis on nutrio-reproductive syndrome. An analysis of data from a dairy herd with a repeat breeding problems is presented and the purpose of this paper is to discuss some management practices that relate to cattle fertility, some of which are directly applicable today and some that may become available in the future. 1. Total of 147 cows examined were grouped as pregnant(60.5%), anestrus after breeding(10.8%), unknown to conception(15.7%), repeat breeder(10.8%) and others(2.1 %). Evaluation for the breeding history of the herd and the reasons for culling indicated that the repeat breeder was the major problems especially on the large herd (type-A and B farm) than the small one (type-C) in this area. 2. The reproductive histories and results of reproductive examainations were as follows. Calving intervals were 512 days(17.4 months), the interval from parturition to first breeding 91.3 days and postpartum interval to first estrus 52.6 days respectively. Service per conception rate was observed as 1.4, and the 30-60-day and 60-90-day nonereturns were 42.9 and 91.5 per cent. These findings were a sign that cows might not be cycling by 60 days, or that estrus detection was inferior. 3. Tendency towards a frequency of conception and parturition through one year was evaluated, and it was suggested that the problems of summer sterility should be re-evaluated because of the conception rate was low in August to October. On the other hand, natural breeding was frequently used instead of artificial insemination service on the mating system in this area. 4. The mean value of the examined cows for red blood cell count and hemoglobin values were 5.5×10 6 per cmm and 7.8 grams per 100ml of blood. It was markedly noticed that the mean value of red blood cell of the anestrus after breeding group was lower than that of the pregnant group(P<0.05). It seemed to be a anemic condition because of the mean value was relatively low compared with the reported values in other countries. 5. The mean value for total serum protein was 7.3 grams per 100ml of blood and it was observed that unknown to conception group showed the lowest value, and almost all the cows which showed abnormal values belonged to the repeat breeder group. 6. The mean value for serum calcium was 4.5 mEq per liter of blood, which was coincide with the lowest range of the normal value(4.5 to 5.5mEq/L). Significant differences on the calcium contents were observed between the anestrus after breeding(P<0.05) and repeat breeder group(P<0.01) to pregnant group. On the other hand, the mean value for serum inorganic phosphorus was 7.3mg per 100ml of blood, which was the normal value(7.0 to 7.5mg/100ml). The Ca/P ratio was observed as 1.47 as a mean of total examined cows but more than 50 per cent of repeat breeder and unknown to conception groups showed, hypocalcemia. 7. Normal A/G ratio was observed as a mean, but 62 cows(45.6%) were positive by the liver function test(Hayem's and gross reaction), and almost all the positive cows on the test had the abnormal total serum protein values. 8. No significant features were observed among the groups in the mode of internalparasite infection, but the liver-fluke infection was demonstrated in 48 cows(32.6%), and of these 66.7 per cent were positive in the liver function test. 9. Follow-up evaluations on the results of the laboratory tests strongly suggest that the problems of repeat breeder had a tendency to occur more frequently in the large herd (A and B-type farm), and on the other hand, abnormal conditions, especially on the calcium and phosphorus metabolism, observed more frequently in the subsidiary dairy farm management(C-type). 10. With evaluations for maintaining high fertility in healthy herds and illustrated results from a herd on a systemic herd health programs, followings may be pointed out for recommendation. First, it is necessary to consider a countermeasure against the faulty management followed by the tendency of large herd. Second, the feeding and management technic of farmers should be improved not to-produce the nutrio-reproductive syndrome. Third, the poor test results of repeat breeder and unknown to conception groups may be related with. the reproductive disturbances and actions should be taken to increase the reproductive efficiency.

Apartment House 建築의 技術的 諸 問題에 對한 考察

박병전 全北大學校 1967 論文集 Vol.9 No.-

사이토카인과 Lipopolysaccharide 자극에 의한 RAW 264.7 세포주의 nitric oxide 생성

김영덕,전창덕,이병순,이복수,박석돈,백상기,정헌택 충남대학교 생물공학연구소 1993 생물공학연구지 Vol.3 No.-

Macrophages have been implicated as a major class of effector in the host response to neoplasia. Cells of the monocyte-macrophage lineage are known to exhibit tumoricidal activity following stim-ulation by γ-interferon, tumor necrosis factor, BCG and bacterial products such as lipopoly-saccharide (LPS). While the mechanism involved remain obscure, the generation of reactive nitrogen intermediate (RNI) by activated macrophages is considered a maior participant in mediating the tumorstatic effect. But much of what is known about the induction and release of RNI has been elucidated by using freshly isolated cells from blood and other tissues of experimental animals. In this study, we used a murine macrophage cell line, RAW 264.7, and found that these cells showed above 99% positive of pan macrophage marker by immunohistochemical staining. These cells could produce nitric oxide (NO), when incubated with γ-IFN or poly I:C. Incubation of RAW 264.7 cells with γ-IFN for 48 hous in the presence of LPS agumented NO release in a dose dependent manner. Whereas, treatment of anti-TNE-α antibody or antisense TNF-α oligodeoxynucleotide inhibited the release of NO_2 by γ-IFN plus LPS activated macrophages. The production of NO was also inhibited reversibly or irreversibly by N^GMMA,NAA,arginase or DPI. Thease data suggest that RAW 264.7 cell line may be useful for the in vitro evalulation of biological response modifiers as well as the study of signal pathway of NO release by macrophages.

플러그셀 크기 및 용토가 거어베라의 묘생장에 미치는 영향

조문수,예병쾌,박윤영,전하준 한국환경농학회 2003 한국환경농학회지 Vol.22 No.1

양액재배용 거어베라 우량묘를 생산하기 위한 기초연구로 플러그셀 크기 및 용토가 묘생장에 미치는 영향을 조사하였다. 용토의 물리성을 측정한 결과 가비중, 진비중 및 공극율은 퍼얼라이트에서 가장 높게 나타났으며 수분보유량은 코코피트에서 가장 높게 측정되었다. 162, 129, 72, 50구 플러그셀 트레리별로 퍼얼라이트 코코피트 그리고 퍼얼라이트+코코제트(1:1)을 채우고 60일간 육묘하여 묘의 생육을 조사하였다. 묘의 엽수는 125구 코코피트 처리에서 가장 많았으며 엽면적은 50구 코코피트 처리에서 높게 나타났다. 신초와 뿌리의 생체중 및 건물중 그리고 엽록소 함량은 퍼얼라이트+코코피트 처리에서 높게 측정되었다. 플러그셀 크기가 클수록 유모 생장에 효과적이었으며 퍼얼라이트 단용 보다는 코코피트와의 혼용 용토에서 유묘 생육이 가장 양호하였다. This study was conducted to examine the effects of plug tray cell size and growth media on good seedling production of Gerbera hybrida Hort. Seedlings were worm for 60 days in 50, 72, 128, 162 cell trays continuing perlite, cocopeat and perlite+cocopeat(1:1, v/v). Perlite showed higher bulk density than cocopeat and perUte+cocepeat. Total porosity was greater in perlite, cocopeat and perlite+cacopeat in order. Cocopeat showed the highest water balding capacity. Number of leaves were greatest in 128 cell tray containing cocopeat. Leaf area was greatest in 50 cell tray containing cocopeat. Seedling growth was also better in plug tray of bigger cell size. Seedling growth of fresh and dry weight of shoot and root was much better in the growth media of perlite+cocopeat.

무궤도 이동 로보트의 설계 및 주행오차 보정에 관한 연구

김갑일,김동준,이병도,유익주 明知大學校 産業技術硏究所 1995 産業技術硏究所論文集 Vol.14 No.-

In this paper, design and construction of mobile robot are conducted and the error reduction and obstacle avoidance techniques are introduced. Up to now, in the design of most mobile robots, there is emphasis on the compensation of tracking errors using the additional sensors and guidance method, rather than the reduction of the tracking errors of motor itself and wheel errors. In this purpose, high performance motor and encoder are used for the driving actuator, and the acceleration/deceleration technique and caster encoder are introduced to reduced the driving errors. Also ultrasonic sensor performs obstacle avoidance, which is proved using the driving test.

고탁도시 DAF 정수장의 운영 및 진단

권순범,안효원,강준구,손병용 대한상하수도학회 2004 상하수도학회지 Vol.18 No.2

DAF process has been designed considering raw water quality characteristics in Korea. Although direct filtration is usually operated, DAF is operated when the freshwater blooms occur or raw water turbidity become high. Pre-sedimentation is prepared in case when raw water turbidity is very high by rainstorms. A main feature of this plant is that the operation mode can be changed (controlled) based on the characteristics of raw water to optimize the effluent quality and the operation costs. Treatment capacity (surface loading rate) and efficiency of DAF was found to be better than conventional sedimentation process. Moreover, lowdensity particles (algae and alum flocs) are easily separated while it is difficult to remove in sedimentation. One of the main concerns in adoption of DAF (Dissolved-Air-Rotation) process is a high raw water turbidity problem. That is, DAF is not adequate for raw water, which is more turbid than 100MU. In order to avoid this problem, pre-sedimentation basins are prepared in OAF plant to decrease the turbidity of DAF influent. For simulation of the actual operation, bench and full-scale tests were performed for highly turbid water conditions. Consequently, DAF process coupled with sedimentation is suggested that pre-sedimentation with optimum coagulation prior to DAF would be appropriate.

요꼬가와吸蟲症 治療에 있어서 Praziquantel(Distocide^(�))의 效果

李純炯,蔡鐘一,洪性琮,全英淑,徐丙卨 대한화학요법학회 1984 대한화학요법학회지 Vol.2 No.2

國産 praziquantel(Distocide^(ⓡ))의 요꼬가와吸蟲感染에 대한 治療效果를 알아보기 위하여 전라남도 강진군 탐진강 流域의 住民 중에서 68名의 蟲卵陽性者를 색출하고 體重당 100㎎/㎏의 praziquantel을 單回 투여한 후 70일에 追跡大使檢査를 실시하여 驅蟲效果를 判定하였다. 結果는 다음과 같다. 1. 총 45名의 追跡檢査者 중 41名이 蟲卵陰轉되어 91.1%의 治療率(care rate)을 보였으며 이들의 投藥前 E.P.G 合計가 125,600이었던 것이 投藥後 800으로 減少되어 99.4%의 蟲卵率을 보였다. 2. 驅蟲效果는 投藥前 感染强度(E.P.G)에 따라 다소 다른 것으로 나타났으며 輕感染者일수록 높은 效果를 보였다. 3. 藥劑服用에 의한 副作用은 2例에서 가벼운 頭痛이나 현기증을 호소한 이외에는 전혀 문제되지 않았다. 이상의 結果로 볼 때 國産 praziquantel(Distocide^(ⓡ)) 요꼬가와吸蟲症에 대하여 10㎎/㎏ 單回投與로 매우 우수한 驅蟲效果를 보이는 것이 立證되었고 效果, 投藥法, 副作用 등을 감안할 때 집단치료 약제로서 손색이 없을 것으로 생각되었다. Fraziquantel(Cistocide", Chinpoc:-g Pharm. Co). a 'croad spectrum anthelmintic zgzirs: tremato6es and cestodes, ~ 5 - i - a ~ tested for its efficacy In treatment of A!letclgonin.zis yok~govias infection. during the priod fron? Jzmsry t o Ajmi. 1984. A total of 68 egg ~ o s i t i r e cases TTES selected from the inhabitants of Kangjin-gun, South Choila Do, 2nd treated a i t h lOmg/kg ?x<:- weight of I;raziquar.te! in single dose. Among them 25 heavy infection cases were purged ~ i t l 20-20g of magnesium sulfzte(MIgS04) one hour after the treatrcent. Follow up stool exammztion was done after 70 days and the drug efficacy was estimated in terms of cure(=egg negati7-e conversion) and egg reduction rates. The results were as follows: 1. AIiong 45 follm- up cases 41 were cured(91.1% in cure rate) and the pre-treatment E.P. G.(eggs per gram of feces). 125,600, was reduced to 800 after the treatment(gg.4X in egg reduction rate). 2. The cure rates x-ere dependent upon the degiee of E.P.G.; the lower the intensity of infection before treatment, the higher the cure rate was obtained. 3. There x-ere nearly no side effects due t o drug administration except f o r slight degree of headache and dizziness in 2 cases. From these results, it is concluded that lOmg/kg single dose of praziquantel (Distocide") is highly recommendable in treatment of M. gokogawat infection.

Methazolamide 복용 후 발생한 Stevens-Johnson Syndromex

정종호,이은정,김태형,전원선,우광진,양미연,강병일,은준영,추은주,전민혁 순천향의학연구소 2010 Journal of Soonchunhyang Medical Science Vol.16 No.1

..

Urban Quality of Life Assessment Using Satellite Image and Socioeconomic Data in GIS

Jun, Byong-Woon The Korean Society of Remote Sensing 2006 大韓遠隔探査學會誌 Vol.22 No.5

This paper evaluates and maps the quality of life in the Atlanta, Georgia metropolitan area in 2000. Three environmental variables from Landsat TM data, four socioeconomic variables from census data, and a hazard-related variable from toxic release inventory (TRI) database were integrated into a geographic information system (GIS) environment for the quality of life assessment. To solve the incompatibility problem in areal units among different data, the four socioeconomic variables aggregated by zonal units were spatially disaggregated into individual pixels. Principal components analysis (PCA) was employed to integrate and transform environmental, socioeconomic, and hazard-related variables into a resultant quality of life score for each pixel. Results indicate that the highest quality of life score was found around Sandy Springs, Roswell, Alphretta, and the northern parts of Fulton County along Georgia 400 whereas the lowest quality of life score was clustered around Smyma of Cobb County, the inner city of Atlanta, and Hartsfield-Jackson International Airport. The results also reveals that normalized difference vegetation index (NDVI) and relative risk from TRI facilities are two versatile indicators of environmental and socioeconomic quality of an urban area in the United States.