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      • KCI등재

        KAERI 부지 주변의 환경선량 측정을 위한 온라인 감마선량 감시시스템

        이정호,박두원,이원윤,이현덕,최용호,김삼랑,홍광희,이창우 대한방사선 방어학회 1994 방사선방어학회지 Vol.19 No.2

        환경감마선량 변동을 감시하기 위해 한국원자력연구소 부지 주변에 온라인 감마선량 감시망을 구성하였다. 모니터링 포스트에 설치된 전리함 검출기에 의해 측정된 자료는 무선전송방식으로 중앙통제소에 전송되어 실시간으로 감시된다. 무선전송 방식은 자료의 전송, 처리 및 자자에 신뢰도가 높고 경제적이었다. 감시시스템은 급격한 선량증가시 조기경보체제와 연결할 수 있게 하였다. On-line gamma monitoring system around KSERI-site was set up to monitor the radiation fluctuations in environment. Data on gamma exposure rates measured by the ionication chamber in the monitoring posts are transmitted to a computer of central control station with radio telemetry transmission and reliable on handing and storing of data. This monitroing system can triger an early warning system in the event of abnormal radiation levels.

      • 사과원의 초생재배에 관한연구

        이용하,장남일,정삼택 경북대학교 1971 生産技術 Vol.5 No.-

        We studied on the sod culture at apple orchard from 1968 to 1970. The results obtained can be summarized as follows; 1. There was no difference in the soil temperature between 20 and 40cm. In the sod lopt. But the change of soil temperature in the control plot was remarkable. 2. It was showed that the moisture content was a average 44.7% in sod polt, and 41.0% in control plot. In Weed plot its content was 49.1%. It showed the highest content among sod plots. Comparing this result with first and second year experiment, there was difference meaningly in the soil moisture but no striking difference between third and second year xpeeriment. Soil moisture content was maintained nearly the same amounts after two years from the experiment. 3. Sods produced was 34.5㎏/10m in Weed plot while in orchard grass plot was 15.0㎏/10m. 4. Root elongation of apple tree was 58.3㎝/year in Ladino clover plot, 32.9㎝./year in Weed plot in turn. 5. Shoot elongation of apple tree was 57.6㎝./year (in Ladino clover plot, 57.5㎝./year) in weed plot and 48.8㎝./year in control plot. Shorter by 9㎝. than weed plot. 6. N.P˙ and K. content in the apple leaf was satisfied for the tree growth, and CaO and MgO were also satisfied. During August when fruit and flowed buds are developing, these elements were reduced somewhat. 7. Organic materials are increased at sod plots than control plot. By accumulation of sod in the soil, organic materials and MgO were increased. Ladino clover and Weed plots were 1.09% and 1.04% in MgO element respectively by high amounts of sod production.

      • 백혈병 세포주에 대한(±)-ar-Turmerone, 자근 및 황금추출물에 의한 항암제의 세포독성 증강효과

        이윤영,유관희,김삼용,안병준 충남대학교 약학대학 의약품개발연구소 1991 藥學論文集 Vol.7 No.-

        Using the colorimetric [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] (MTT) assay, we evaluated the chemosensitivity of 8 anticancer drugs{vincristine(VCR), vinblastine(VBL), adriamycin(ADR), cisplatin(CPDD), etoposide(VP-16), cytosine arabinoside(ara-C), bleomycin(Bleo) and cyclophosphamide(CYC)} and the cytotoxicity-enhancing effects of (±)-ar-turmerone and the extracts of the crude drugs {Lithospermum erythrorhizon(LE) and Scutellaria baicalensis (SB)} on the above mentioned anticancer drugs against HL-60 and KG-1 cells among 8 anticancer drugs, VCR, VBL, ADR, and CPDD inhibited the growth of both cell lines by more than 50%, while VP-16, ara-C, Bleo, and CYC were less effective. (±)-ar-Turmerone had significant inhibitory effects against both cell lines, showing the ID_50 values of 11.730 ㎍/㎖ and 0.292 ㎍/㎖ for HL-60 and KG-1 cells. respectively. But the extracts of LE and SB roots showed no significant cytotoxic effects. According to ID_50 values, the cytotoxicities of VCR, VBL and ADR against HL-60 were enhanced two, eight and three times by mixing (±)-ar-turmerone, five, seven and three times by adding the extract of LE root, and twenty, six and three times by mixing the extract of SB root, respectively. The cytotoxicities of the above mentioned drugs against KG-1 cell were enhanced two, seven and three times by mixing (±)-ar-turmerone, two, three and three times by combining with the extract of LB root, and two, five and two times by adding the extract of SB root, respectively. The cytotoxicity-potentiating effects of (±)-ar-turmerone and the extracts of LE and SB roots againg HL-60 cell were greater than KG-1 cell.

      • 초생재배에 관한 연구

        이용하,정삼택 慶北大學校 生産技術硏究所 1970 生産技術 Vol.4 No.-

        The results of sod culture from 1968 to 1969 can be summarized as follows: 1) In weed plot, the average soil temperature was 21.2℃ under the Roll's janet tree while the average temperature of orchard grass plot was 22.3℃. Red clover plots under and immediately surrounding Jonathan tree had the highest average soil temperature. The average temperature was 2-3℃ lower during the second year than the first year. The temperature of the control plot was 1 to 2℃ higher than that of the sod plot. The soil moisture content beneath Roll's janet tree was 49.0%, while the moisture content beneath Jonathan tree was 44.4%, both of which represent an 8% increase over last year. At the same time the orchard grass plot had a higher soil moisture content than both Roll's janet and Jonathan. 2) The fresh weight of the sod produced was the highest in the Ladino clover plot at Roll's janet and Jonathan orchards, whose sod fresh weight were 110.6Kgr and 113.7Kgr respectively. The fresh weight increased three times this year over last year. 3) Shoot elongation was the longest in the Ladino clover plot at 86.1㎝ while the control plot which showed the longest elongation in 1968 was retarded severely in 1969. 4) Due to the cutting of the sod, N.P. and K were increased but after one month the total content of N.P.and K decreased because of absorption of these elements by the tree. 5) Organic materials were highest in the Ladino clover plot of both the Roll's janet and Jonathan orchards, 1.82% and 2.28%, about 0.5-1.0% higher than the control plot. * Sod culture was better than clean-tillage culture for the following reasons. 1) The soil temperature of the sod plot was higher than the control plot by 1-2℃. 2) The sod plot contained 8% more moisture than control plot. 3) Shoot elongation of the sod plot was longer than that of the control plot. 4) There was more N.P. and K in the sod plot than control plot. 5) There was 0.5-1.0% more organic materials in the sod plot than in the control plot. * Comparision of the results between the sod and weed plot: 1) The sod plot was 2-3% higher in moisture content than the weed plot. 2) The sod plot produced 10-30kgr more weight of sod than the weed plot. 3) Shoot elongation of the sod plot was 5-8㎝ longer than the weed plot. 4) N.P. and K elements were 0.5-1.0% higher in the sod plot than in the weed plot. 5) Accumulation of organic materials in the soil was 0.5-1.0% higher in the sod plot than in the weed plot.

      • 위암 환자에서 세포성 면역 기능에 관한 연구

        이재익,윤일국,이종선,김종완,장준,안정기,송민호,정현용,이헌영,김삼용,김영건 충남대학교 암연구소 1991 癌共同硏究所 硏究誌 Vol.1 No.1

        We performed a variety of lymphocyte stimulation tests, delayed hypersensitivity skin tests, and enumeration of several lymphocyte subpopulations in 21 patients with gastric cancer who did not receive any form of anticancer therapy, and in 20 healthy controls. The gastric cancer patients had significantly decreased number and total score of positive reactions in delayed hypersensitivity skin tests compared with the healthy controls. The percent of CD_(4) positive lymphocytes in the gastric cancer patients was significantly decreased compared to the normal control subjects, but it had no correlation with the total score of delayed cutaneous hypersensitivity reactions. The ratio of helper to suppressor cells was lower in the cancer group. The uptake of 3H-thymidine was markedly depressed in cancer patients when stimulated with various mitogens. There was little correlation between any of the stimulation tests and any of the lymphocyte subpopulation proportions to delayed hypersensitivity cutaneous reactions. Optimal proliferative response was found in lymphocytes stimulated with 10 micrograms of concanavalin-A and 10 microgram of phytohemagglutinin. Advanced stage patients had greatly depressed delayed hypersensitivity skin reactions and proliferative responses to mitogens compared with localized diseases. These results suggest that gastric cancer patients have depressed cellular immune functions, which mainly result from the decreased helper cells and defects in functional proliferative response to mitogens. Interleukin-2 and interferon-gamma restored the in vitro proliferative response of lymphocyte in patients with gastric cancer.

      • KCI등재
      • 백혈병 세포중 대한(±)-ar-Turmerone, 자근 및 황금추출물에 의한 항암제의 세포독성 증강효과

        이윤영,유관희,김삼용,안병준 충남대학교 암연구소 1991 癌共同硏究所 硏究誌 Vol.1 No.1

        Using the colorimetric [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] (MTT)assay, we evaluated the chemosensitivity of 8 anticancer drugs{vincristine(VCR), vinblastine (VBL), adriamycin(ADR), cisplatin(CPDD), etoposide(VP-16), cytosine arabinoside(ara-C), bleomycin (Bleo) and cyclophosphamide(CYC)} and the cytotoxicity-enhancing effects of (±)-ar-turmerone and the extracts of the crude drugs {Lithospermum erythrorhizon(LE) and Scutellaria baicalensis (SB)} on the above mentioned anticancer drugs against HL-60 and KG-1 cells among 8 anticancer drugs, VCR, VBL, ADR, and CPDD inhibited the growth of both cell lines by more than 50%, while VP-16, ara-C, Bleo, and CYC were less effective. (±)-ar-Turmerone had significant inhibitory effects against both cell lines, showing the ID_(50) values of 11.730 μg/ml and 0.292 μg/ml for HL-60 and KG-1 cells, respectively. But the extracts of LE and SB roots showed no significant cytotoxic effects. According to ID_(50) values, the cytotoxicities of VCR, VBL and ADR against HL-60 were enhanced two, eight and three times by mixing (±)-ar-turmerone, five, seven and three times by adding the extract of LE root, and twenty, six and three times by mixing the extract of SB root, respectively. The cytotoxicities of the above mentioned drugs against KG-1 cell were enhanced two, seven and three times by mixing (±)-ar-turmerone, two, three and three times by combining wilth the extract of LB root, and two, five and two times by adding the extract of SB root, respectively. The cytotoxicity-potentiating effects of (±)-ar-turmerone and the extracts of LE and SB roots against HL-60 cell were greater than KG-1 cell.

      • 地方工業立地를 통한 農村地域人口 定着에 관한 硏究 : 晋州一帶 工場從業員 調査를 中心으로 Based on the Result of Questionaire Survey to the Factory Employed in Chinju and its Vicinity

        李成浩,崔三鎔 부산대학교 사회과학대학 1985 社會科學論叢 Vol.4 No.2

        Recently, the drastic decrease of population in the rural areas has emerged as a serious issue. This trend, stemmed directly from the phenomena of urbanization following the high rise industrialization, can be to some extent blamed on the existing direction of both the economic and regional development policy. Namely, the development scheme, based on the manufacturing-led growth center model Korea has pursued since 1960s, has brought about the relative stagnation in the rural part of the nation, causing naturally the outmigration of rural population into the urban areas. The rural decline ensued from the successive population drain entails various aspects of the negative impacts, such as the wide range of interregional income disparities which may disrupt the national consensus of the nationhood and raise the dual structure in the physical land space. This paper, viewed from the above problem statement, is aimed at analyzing the effect of the case of inducing the factories into the rural areas as a development strategy for the efficient rural settlement of population and also investigating the status of the present rural manufacturing to identify what is required to support such project. The manufacturing employed from 10 factories in Chinju and its vicinity, consisting of 573 people, was sampled for conducting the case study. Questionnaire survey sheets were given to each respondent to obtain the relevant ranges of socio-economic data relating to his or her work-place and its condition; survey items contain such information as family status, dwelling and its tenure, education, income, transport means for journey to work, and conditions of workplace and jobs. Main findings confirmed through the analysis can be summarized as follows. First, as the result of the analysis on the past trend of population movement, it is identified that the phenomena of the increase and decrease of population has a close relation to the regional distribution of industries. Second, it is revealed that the male is aged higher than the female; the married has the higher portion than the non-married. Third, it is shown that most of the manufacturing workers have the low level of monthly income and educational background. Fourth, it is indicated that some variables such as the present address, the birth place, the place of final education, and the dwelling place before taking jobs have intimate relationships with each other; it also appears that in view of no evidence of taking the present job to be a factor of population movement, the setting up of factories in the rural areas can't be a component of population migration. Fifth, it is found that the level of satisfaction of the present job varies on the basis of job training experience and the level of monthly income. Accordingly, in order to encourage rural people to take a job in the present place, it is apparently necessary for creating the job training programs for procurement of the job-related technical license as well as taking some policy measure to improve the existing wage systems. Sixth, it is also found that the rural area has still the potentiality to provide quality of labor forces for its own manufacturing operation, that is an important factor for the rural base factories to be managed in the better direction. Seventh, it is identified that most of the respondents have the commuting distance of 12km or less and the time range of one hour or less, for journey to work; the best desirous mean of transport for factory workers can be the commuting by the walk, the bicycle-riding, and the commuting bus provided by the firm. Eighth, in conclusion it should be pointed out that the success of population settlement in the rural area through the localized manufacturing bases depends upon the common effort by the rural residents, the entrepreneurs, the central government, together with precarious choice of the relevant establishments at the proper scales of the operating units on which procurement of raw materials and search for markets are relied.

      • 居昌郡 住民의 中心地利用(Ⅰ)

        李成浩,崔三鎔 부산대학교 사회과학대학 1984 社會科學論叢 Vol.3 No.1

        During the last two'decades the nation has experienced a drastic change of the nation-wide spatial features. The economic expansion of the industrial bases in general and the dynamic growth of manufacturing in particular have persisted in the process of a series of economic development schemes, along with the physical land plans, resulting in the phenomenal transformation in the existing spatial framework of the nation. Especially, the construction of the national expressway networks was a propellent for changes in the various facets of the environment, physical and socio-cultural. Even though the highway network, together with facility of communication system, has helped to speed up the flow of the man and goods among region, it has been also as factor for the regional development in the typical rural hinterland. It is assumed that once a new highway is built up, the people in nearby area affected by the barrier of physical environment will receive many facets of environmental impacts in daily life. One of its positive side-effects is the increase of opportunities in terms of social and economic activities, because people, set free from the physical barrier, are provided with the easy access for information and movement. This paper is primarily concerned with the finding of the perceived behavioral modes in a typical from communities in relation to the utilization of the central places; it is also aimed at providing some useful information of socio-economic status in the physically isolated rural area by which a new highway under near completion will be passed. Geochang-gun(郡) was selected for the case study. Tweleve sruvey units, of which one unit consisits of 18 subitems, were selected to obtain the broad scales of socio-economic data through interview with residents to see how activity or perceived activity is related to the basic socio-economic structure and how people respond to their needs of certain services such as education, shopping movement of residents, choice of place for jobs. Some characteristics found out through the analysis can be as follows. First, Geochang-gun belongs to an isolated rural society with dominant mode of farming activity in which the traditional value of life is prevalent but the changes in the socio-economic environment loom through diffusion of innovation. Second, it seems that most farming communities have faced the trend of population decrease due to outmigration toward urban areas while Geochang-eup(邑), a central place town, has shown the opposite effect for its strong tertiary industrial activities. Third, it is identified that Geochang-eup has played more important central place functions relative to its comparable counterparts in the size of population because of lack of compective towns or cities at the perimeter of the 50km radius. Fourth, in relation to the perceived level of familiarity for neighbor cities, people seem to be biased toward such factors as distance from cities, functions respective city provides, centrality of each and presence of kinfolks and friends. Perceived levels for neighbor cities appeared in the order of Daegu, Busan, Seoul and Junju. Fifth, as regard the perception for resident movement, it seems that people are directly influenced by personal motive personal experience as to the purpose of movement, the time-interval for residence, the nature of movable place and distance. The preferred place for seeking jobs wes choiced in the order of Busan, Daegu, Seoul, Geochang-eup and Jinju whereas the desirable place for the higher education appeared in the order of Daegu, Seoul and Jinju. Sixth, according to the analysis of utility of central place facilities based on 4 class of 15 items, most people have been relied on Geochang-eup Daegu city for meeting their needs for services. Daegu shows more acceptance in the highest order functions in the hierarchy, while Geochang-eup receives a broad scale of preference in the upper three order functions and village centers dominate the fourth order function. Seventh, it is identified that the social status of the local residents reflects the differences in th preference of the central place. As a result of this basic analysis, it is felt that the present paper serves a useful but limited purpose by drawing attention to the behavioral aspects of social environment which need to be through investigated in the follow-up research in the near future.

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