• Proceedings of the KSLP Conference
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• 1993.12a
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• pp.9-9
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• 1993

후두 형태에 이상이 없는 잡종개 2마리를 정맥 마취한 상태에서 생체 발성 모형을 만들었다. 경부 피부를 수직절개하고 후두 및 기관을 노출시킨 후, 기관에 상, 하 두 개의 기관절개를 가하고 두개의 삽관튜브를 삽입하였다. 아래 튜브로는 호흡을 유지하게 하였고, 위의 튜브로는 공기를 후두 방향으로 보내면서, 상후두신경의 외지와 반회신경 및 반회신경의 최종 분지인 갑상피열 분지에 전극을 각각 부착하여 일정한 정도의 전기자극을 가함으로써 소리가 유발되도록 하였다.(중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.191-193
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• 2000

오존 등 기체상 오염물질의 식물 표면에 대한 건성침적은 식물의 생물학적 활동에 피해를 줄 수 있으며(Runeckles and Chevone, 1992; Chappelka and Chevone, 1992), 건성침적 현상은 노출된 식물지표 환경의 화학적 특성을 변화시키는 작용으로 관심의 대상이 되고있다(Businger, 1986; Galbally et al., 1986; Chang et al., 1987; Wesely, 1989; Hicks et al., 1989). 이러한 기체상 오염물질의 침적현상은 대기질 관리에 있어서 오염물질의 적절한 감소계획을 산정ㆍ평가하기 위하여 지상 오염물질의 농도를 정확하게 추정하는 과정에서 필수적으로 고려되어야 하는 부분이다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.308-309
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• 2000

천연해역 및 양식장 등의 환경변동은 수산동물에 많은 저해영향을 미치게 되는데, 최근 환경변화에 대한 수산동물의 생리 및 생화학적 지표를 개발하려는 시도가 부분적으로 이루어지고 있다(McCin et al., 1996). 이들 중에 어류의 혈액 구성은 일반적으로 환경수 중에 존재하는 stress를 유발하는 물질에 의해 변동하기 때문에 적혈구수, 혈색소농도 및 상대혈구용적 등의 혈액성상, 혈청내의 무기 및 유기성분의 변화는 환경변화를 감시하는 유용한 수단으로 활용되고 있다(Ma et al., 1995; Khattak and Hafeez, 1996). (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.131-132
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• 2002

우리나라는 식수의 90% 이상을 지표수로부터 얻고 있다. 그만큼 식수를 위한 취수가 외부의 위험에 노출되어 있음을 의미한다. 원칙적으로 어떠한 대기오염물질의 침적도 수질에 영향을 미칠 수 있다 황과 질소분은 대표적인 산성물질로 수질을 산성화시킬 수 있다 그러나 우리나라 주요 하천과 호소는 적지 않은 양의 산성물질 침적에도 불구하고 pH는 상수원수 등급기준인 6.5-8.5사이로 양호하다 (환경부, 2001). 하천, 호소의 완충 능력이 침적에 비하여 충분함을 의미하나 구체적 메커니즘은 분명치 않다. (중략)

• Proceedings of the ESK Conference
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• 1996.04a
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• pp.250-251
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• 1996

인간의 온열환경에 대한 적응은 인간-의복-환경 System사이의 산열과 방열의 열교 환을 통해 보유량을 일정하게 유지하는 항체온 조절에 의해 이루어진다. 이러한 인체와 의 관계와의 열교환은 주로 피부표면을 통해 이루어지므로 피부온은 외계로의 방열을 예측 하여 인간의 체온조절반응을 나타내며, 온열감각을 좌우하는 인자로 의복의 온열생리, 의 복의 보온력, 쾌적성을 평가하는 중요한 생리적인 지표가 되어 착의의 적부를 검토하는 데 의미를 지니면서 의복설게의 기초가 된다. 이에 본 연구는 국내의 기후 및 변화된 온열환경에 적응된 인체의 각 환경기온하에서의 피부온을 기존의 연구와는 달리 장시간의 노출에 의한 변동을 파악하여 쾌적 착의의 관점에서 인체와 환경사이에 존재하는 의복에 있어서 설계의 기초가 되는 피부온의 의의를 재검토함을 목적으로 한다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.13 no.1
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• pp.27-41
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• 2002

The study investigated the citation indicators and the citation analysis data developed in the KoMCI(Korean Medical Citation Index) project. With the full understanding of the current level of citation rates of Korean medical journals by Korean medical journals. and of the characteristics and problems associated with the KoMCI citation indicators, it is possible to further develop or modify citation indicators which will better represent the citation patterns of Korean medical journals. The highest impact factor reported in the KoMCI 2000 : Korean Medical Journal Citation Reports, which covered 69 Korean medical journals published in 2000 is 0.424 and the average is 0.182. It is because only 8.5% of references cited in Korean medical journal articles is to the Korean journal articles, The journal self-citation rates are very high (usually higher than 50%) due to the fact that there are only a few Korean journals published in the same subject area. The KoMCI impact factors of two Korean SCI journals for which SCI JCR reported the SCI 2000 impact factors are about 1/3 of the SCI impact factors. It is because SCI is based on the citations received from 5,900 journals whereas KoMCI is from 69 journals.

• Journal of Life Science
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• v.20 no.4
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• pp.618-622
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• 2010

This study examines the relationship between urinary arsenic concentration and urinary 8-hydroxydeoxyguanosine (8-OHdG) concentrations, an index of oxidative DNA damage, among women who live near abandoned metal mines. The sample consisted of 165 residents living near two abandoned metal mines located in Chungbuk Province. Demographic characteristics as well as environmental factors relevant to arsenic exposure were collected through interviews, and urinary arsenic concentrations and urinary 8-OHdG concentrations of the research subjects were measured. The collected data were subsequently analyzed using the statistics program SPSS 12.0. The geometric average of urinary arsenic concentrations among the research subjects was $5.65\;{\mu}g/g$ creatinine. In a correlation analysis between urinary arsenic and 8-OHdG concentrations, the correlation coefficient was significant (p<0.001) at 0.399. This study suggests that urinary 8-OHdG concentrations may be a DNA damage marker for chronic arsenic exposure in women.

• Korean Journal of Ichthyology
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• v.22 no.1
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• pp.1-8
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• 2010

We determined oxidative stress caused by thermal stress in olive flounder Paralichthys olivaceus based on the altered-mRNA expression and enzymatic activity of two key antioxidant enzymes, superoxide dismutase (SOD) and catalase (CAT), along with monitoring of several other biomarkers. When the fish were exposed to acute thermal change (from $20^{\circ}C$ to $25^{\circ}C$ and $30^{\circ}C$), the expression and activity of both enzymes were significantly higher at elevated temperatures ($25^{\circ}C$ and $30^{\circ}C$) than at $20^{\circ}C$. Lipid peroxidation (LPO) was also higher at $25^{\circ}C$ and $30^{\circ}C$ than at $20^{\circ}C$. In addition, the plasma $H_2O_2$ concentration was significantly increased by thermal stress. Furthermore, we investigated changes due to thermal stress by measuring levels of plasma alanine aminotransferase (AlaAT) and aspartate aminotrasferase (AspAT). Both were significantly increased by thermal stress. As an immune indicator, the lysozyme concentration was lower at $30^{\circ}C$ than at $20^{\circ}C$, indicating that thermal stress decreases immune function. Therefore, thermal stress could induce oxidative stress and suppress immune function and can cause physiological stress.

• Korean Journal of Ecology and Environment
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• v.50 no.3
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• pp.305-313
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• 2017

We investigate that the impact of freshwater organism exposed to the salinity environment by the frequent rainfall following climate change. To evaluate the stress response following salinity exposure, we assessed the survival rate, molting success rate, the developmental period and mouthpart deformities in Chironomus riparius. In addition, we measured the molecular responses of biomarker gene, gene expression of heat shock protein 70 (HSP70) in C. riparius exposed to salinity after 96 hour. The C. riparius survival rates were showed on time dependent manner and not observed survival organisms above 15 psu at day 4. The pupation and emergence of C. riparius were not seen above 15 psu, and the molting success rate was less than 20% at 10 psu. The developmental retardation of C. riparius was well observed in the pupation and emergence period and was delayed by 4 days at 10 psu compared to the control and 5 psu. The mouthpart deformities after salinity exposure at 96 or 72 hour were observed at 10 psu and 15 psu. The expression of C. riparius HSP70 level was significantly increased exposure to 5 psu and 10 psu. Thus, salinity has been caused to be various ecotoxicological and molecular stress responses on freshwater organisms similar to harmful substances such as EDCs and so on.

• The Journal of Engineering Geology
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• v.16 no.1 s.47
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• pp.23-30
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• 2006

This study was carried out to understand the relationship between orientation of tecto-lineaments obtained from aero-photograph and orientation of discontinuities measured at field for the rock types of igneous, sedimentary and metamorphic rocks in Andong area. Total 847 tecto-lineaments were extracted from the aero-photographs and total 1,940 discontinuities including joints, foliations and faults were measured during geologic survey. By using the software DIPS, preferred trends of tecto-lineaments were deduced as N30E-N40E for igneous rocks and N50E-N60E for both sedimentary and metamorphic rocks, while the trends of discontinuities were found as N40E-N50E for igneous rocks, N50E-N80E for sedimentary rocks and N50E-N60E for meta morphic rocks. Even though both orientations for a given rock type showed relatively good agreement in its trend, some discrepancy is also appeared. Since construction safety of geo-structures such as tunnel and slope, etc., is significantly affected by the orientation of discontinuities in rock masses, it is highly recommended to perform a detailed geologic survey as well as an aero-photograph interpretation at a design stage.