• Bulletin of the Korean Chemical Society
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• 제30권9호
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• pp.2111-2113
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• 2009

• 환경영향평가
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• 제3권2호
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• pp.15-24
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• 1994

환경영향평가 연구의 목표(국가환경정책법에 명시)는 개발사업에 대한 여러가지 인자들(생태적, 경제적, 사회적)을 사업이 결정되기 전에 고려하여 사업이 진행되도록 허용하는 것을 확보하는데 있다. 말하자면, 목표는 환경영향평가를 계획과 정책과정에 통합하는데 있다. 국가환경정책법이 시행된 지 25년이 된 오늘날에 그러한 통합의 방향으로 진행의 정도에 관해서 문의하는 것은 적절하다. 이글은 미국의 대평원지역에서의 자원개발사업과 관련하여 계획과 정책과정에서의 환경영향평가에 대한 역할을 검토한다. 특히 에너지 추출 및 변환사업과 관련한 사회경계적 영향과 사업평가, 지방과 지역계획, 주정책개발에서의 환경영향평가에 대한 역할을 설명한다.

• 한국균학회지
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• 제16권1호
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• pp.9-15
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• 1988

H. sativum 배양액에서 두가지 종류의 식물독소물질이 검출되었으며, 이들을 M-toxin과 D-toxin으로 명명하였다. Lettuce 식물반응결과는 D-toxin 보다 뿌리성장의 저해작용이 적었다. 화학분석결과 M-toxin은 특별히 작은 peptid로 되어 있었다. D-toxin는 Helrninthosporal와 화학적 성질이 비슷하였으나 같지는 않았다. 이는 UV, proton NMR와 질량분석기의 기본 자료인 결과이며, D-toxin은 적어도 두개의 isomers로 되어 있었다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
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• pp.446-449
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• 2006

It is backscattering of solar radiation by water body that makes ocean color observable from above, either by airplanes or satellites. Given the very low direct contribution to backscattering by phytoplankton cells, it is curious why the retrieval of phytoplankton concentration from remotely observed ocean color is evidently successful. From semianalytical bio-optical models, a dataset is created of spectral absorption, scattering and backscattering coefficients as a function of chlorophyll concentration. Four scenarios are considered, 1) only molecular and no particle scattering, 2) random particle backscattering uncorrelated with chlorophyll concentration, 3) constrained random particle scattering with known backscattering ratio, and 4) constrained random scattering with random backscattering ratio. Scenario 1 only introduces moderate errors of -20% - 90%. And for scenarios 3 and 4, the errors are largely within 30% and 100%. Scenario 2 introduces the largest errors, with the retrieved chlorophyll concentration virtually uncorrelated with the true values, implying the backscattering must somehow be related to the trophic state. The results of the study suggested These 3 cases confirmed that while it is the absorption by phytoplankton that in large part decides the accuracy of chlorophyll concentration retrieval, for the success of monitoring of global ocean primary productivity we have to improve our knowledge on particle backscattering.

• Asian-Australasian Journal of Animal Sciences
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• 제15권9호
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• pp.1364-1370
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• 2002

The objective of this study was to examine the effect of compensatory growth nutritional regimen on mammary gland growth and lactation. One hundred twenty-two Sprague Dawley female rats (35 days of age) were randomly assigned to either a control or a stair-step compensatory nutrition (SSCN) feeding regimen or an alternating 2-2-3-3-week schedule beginning with 40% energy restriction for 2 weeks followed by re-alimentation (control diet) for 2 weeks. Pup weight gain and milk yield were improved 8% and 8 to 15%, respectively, by the SSCN regimen. The gene expression of $\beta$-casein was 2.3-fold greater in the SSCN group than in the control group during early lactation, but they were greater at all stages of the second lactation. The gene expression of insulin-like growth factor-I was 40% lower in the SSCN group than in the control group during early lactation of the second lactation, but during late lactation it was 80% greater than in the control group. The concentration of serum corticosterone tended to be higher in the SSCN group during the late stage of the first lactation. These results suggest that the stair-step compensatory nutrition regimen improves lactation performance and persistency by modulation of cell differentiation and apoptotic cell death.

• 한국산림과학회지
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• 제87권2호
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• pp.179-187
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• 1998

본 연구는 미국 South Dakota주 Black Hi11s 지역의 관광 영향에 대한 지역 주민 태도와 관리 정보를 얻고자 실시되었다. 관광 영향에 대한 지역 주민 태도를 평가하기 위하여 중요도-성취도 분석방법이 이용되었다. 총 184매의 응답 자료가 연구에 이용되었다. 회수율은 340 중 184매로 54%였다. 대부분의 응답자들은 관광의 지역 경제 영향에 대하여는 높은 긍정적 태도를 갖고 있었으며, 관광의 환경 영향에 대해서는 뚜렷한 부정적 태도는 보이지 않았다. 관광 영향의 23개 인자 중 거주 기간, 소득과 같은 응답자들의 사회 경제적 특성에 따른 유의적 차이가 일부 발견되었다. 중요도-성취도 평가 결과 유용한 장래 관리의사 정보가 제시되었다.

• 한국환경농학회지
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• 제24권3호
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• pp.238-244
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• 2005

Fertilization effects on changes in soil $CO_2$ flux and organic C in switchgrass (Panicum virgatum L.) land managed for biomass production were investigated. The mean daily soil $CO_2$ flux in the manure treatment was 5.63 g $CO_2-C\;m^{-2}\;d^{-1}$, and this was significantly higher than the mean value of 3.36 g $CO_2-C\;m^{-2}\;d^{-1}$ in the control. The mean daily $CO_2$ fluxes in N and P fertilizer treatments plots were not different when compared to the value in the control plots. Potentially mineralizable C (PMC), soil microbial biomass C (SMBC), and particulate organic C (POC) were highest at the 0 to 10 cm depth of the manure treatment. Potentially mineralizable C had the strongest correlation with SMBC (r = 0.91) and POC (r = 0.84). There was also a strong correlation between SMBC and POC (r = 0.90). Our results indicated that for the N and P levels studied, fertilization had no impact on temporal changes in soil organic C, but manure application had a significant impact on temporal changes in soil $CO_2$ evolution and active C constituents such as PMC, SMBC, and POC.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.1259-1261
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• 2003

The vehicle's heading angle determination is formulated and the proposed method based on geometry engages the magnetometer and the GPS. The resulting maximum determination accuracy of 0.3deg over the entire earth as a standard deviation is obtained for a magnetometer with measurement error of 1nT.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.36-40
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• 2003

The considered satellite is supposed to operate in the earth-point mode and sun-point mode in accordance with the mission requirements. The magnetic field correction is based on the orbit geometry using a set of measured magnetic field data from the three-axis-magnetometer and its algorithm excludes the earth’s magnetic field model. Moreover, the usefulness of the proposed method is investigated throughout the simulation of KOMPSAT-1.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2000년도 봄 학술발표회 논문집
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• pp.58-76
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• 2000

An analytical solution method capable of determining the geometric configuration and developed tensile forces of mooring lines associated with fixed plate/pile or drag anchors is presented. The solution method, satisfying complete equilibrium conditions, is capable of analyzing multi-segmented mooring lines that can consist of either chains, cables, or wires embedded in layered seafloor soils. Centrifuge model tests and full -scale field tests were used to calibrate and validate the analytical solution.