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한반도 동해 연안에 자생하는 말잘피, 새우말의 생장 특성
김종협,김재훈,김구연,박정임,KIM, JONG-HYEOB,KIM, JAE HOON,KIM, GU YEON,PARK, JUNG-IM 한국해양학회 2018 바다 Vol.23 No.4
말잘피 새우말은 북태평양에 위치한 북동아시아 연안의 암반에 자생한다. 우리나라에서 새우말은 주로 동해 중부해역의 암반조하대에 나타나며, 본 조사에서는 이 곳에 서식하는 새우말의 생태적 특성을 알아보기 위해, 2017년 8월부터 2018년 7월까지 새우말 군락지의 수중광량, 수온의 변화와 함께 매월 새우말의 형태적 특성, 밀도, 생체량과 잎 생산성의 변화를 조사하였다. 수중광량과 수온은 봄과 여름에 증가하고 가을과 겨울에 감소하는 뚜렷한 계절 경향을 보였다. 새우말의 형태, 밀도, 생체량과 잎 생산성은 겨울과 봄에 증가하고, 여름과 가을에 감소하였다. 새우말의 개체당 잎 생산성과 단위면적당 잎 생산성은 수중광량과 유의한 양의 상관관계를 보였다. 새우말의 연간 평균 단위면적당 잎 생산량은 $6.3{\pm}1.3g\;m^{-2}d^{-1}$로, 2018년 5월 최대값($16.4{\pm}4.4g\;m^{-2}d^{-1}$)과 2월에 최소값($2.4{\pm}0.3g\;m^{-2}d^{-1}$)을 나타내었다. 새우말 생장의 최적 수온은 $12-13^{\circ}C$로 조사되었다. The surfgrass Phyllospadix iwatensis is native in the exposed rocky shores of the Northwestern Pacific Ocean. In Korea, P. iwatensis is mainly found on the rocky subtidal zone in the central eastern coast. In this study, to examine the ecological characteristics of P. iwatensis, we investigated changes in morphological characteristics, density, biomass, and leaf productivity as well as changes in the underwater irradiance and water temperature of its habitat monthly from August 2017 to July 2018. Underwater irradiance and water temperature showed clear seasonal changes; increases in spring and summer and decreases in fall and winter. Morphological characteristics, shoot density, biomass, and leaf productivities of P. iwatensis exhibited significant seasonal variations, increasing in winter and spring and decreasing in summer and fall months. P. iwatensis leaf productivities both per shoot and per unit area showed significant positive correlations with underwater irradiance. The average leaf productivity of P. iwatensis per area was $6.3{\pm}1.3g\;m^{-2}d^{-1}$, while minimum and maximum values were $2.4{\pm}0.3g\;m^{-2}d^{-1}$ in February 2018 and $16.4{\pm}4.4g\;m^{-2}d^{-1}$ in May 2018, respectively. The optimum water temperature for the growth of P. iwatensis in this study was between $12-13^{\circ}C$.
김종협,김혜광,김승현,김영균,이근섭,KIM, JONG-HYEOB,KIM, HYEGWANG,KIM, SEUNG HYEON,KIM, YOUNG KYUN,LEE, KUN-SEOP 한국해양학회 2020 바다 Vol.25 No.4
Although most species in genus Zostera inhabit shallow coastal areas and bays with weak wave energy, the Asian eelgrass, Zostera asiatica is distributed in deep water depth (8-15 m) unlike other seagrasses on the eastern coast of Korea. To examine factors limiting distribution Z. asiatica in relatively deep coastal areas, a transplantation experiment was conducted on October 2011, in which Z. asiatica shoots were transplanted from the reference site (donor meadow, ~9 m) to the shallow transplant site (~3 m). We compared shoot density, morphology, and productivity of Z. asiatica as well as environmental factors (underwater irradiance, water temperature, and nutrients) between the reference and transplant sites from October 2011 to September 2012. Shoot density and shoot height of transplants dramatically decreased within a few months after transplantation, but were similar with Z. asiatica in the reference site during spring. Shoot productivity were significantly higher in the transplant site than in reference site because of high light availability and nutrient concentrations. Transplants showed photoacclimatory responses such as higher rETR<sub>max</sub> and E<sub>k</sub> and lower photosynthetic efficiency in the transplant site than those in the reference site. Most of Z. asiatica transplant in the shallow transplant site disappeared in summer, which may be due to the high wave energy and physical damages induced by typhoons (TEMBIN and SANBA) in August and September 2012. According to the results of this study, Z. asiatica could not survive in shallow areas despite of more favorable light and nutrient conditions. Thus, Z. asiatica may restrictively occur in deep areas to avoid the intense physical stresses in the shallow area on the east coast of Korea.
건설 현장의 초정밀 디지털 맵 생성 및 연계를 위한 정보체계 프로토타입 설계
김종협,염동준,고현아,강태경,Kim, Jong-Hyeop,Yeom, Dong-Jun,Ko, Hyun-A,Kang, Tai-Kyung 한국산업융합학회 2020 한국산업융합학회 논문집 Vol.23 No.6
By nature, smart construction technology is a convergence technology, therefore aptly constructing and running an information system is needed in order to effectively develop and maintain it. Thus, in this study, an information system prototype was developed for the creation and linking of high precision digital maps at road construction sites for the effective performance of the development of the Information Collecting and Analyzing Techniques in the Construction Site (ICAT). For this, (1) defined input/output (I/O) data of each technical detail of ICAT, (2) analyzed the data flow, (3 ) proposed an information system prototype for high precision digital maps development and connection. Based on the information system prototype constructed in this study, it was inferred that each technique and its information for the Smart Construction Technique Development Business was in a consistent flow. Developed information system prototype would enable effective cooperation between subjects directly involved in the technique development, by defining I/O data in advance. Moreover, it would be of value to practitioners for refining the output data from each technique, thereby linking databases and forming Entity Relationship Diagram.
진동만과 가막만에 서식하는 잘피 개체군의 생장 동태 및 탄소고정량 추정
김태환,박상률,김영균,김종협,김승현,김정하,정익교,이근섭,Kim, Tae-Hwan,Rark, Sang-Rul,Kim, Young-Kyun,Kim, Jong-Hyeob,Kim, Seung-Hyeon,Kim, Jeong-Ha,Chung, Ik-Kyo,Lee, Kun-Seop 한국조류학회(藻類) 2008 ALGAE Vol.23 No.3
Since seagrasses in the coastal and estuarine ecosystems achieve high levels of production, they require high inorganic carbon and nutrient incorporation. Thus, seagrasses may play a significant role in carbon and nutrient cycling in the coastal and estuarine ecosystems. To examine growth dynamics of Zostera marina L. environmental factors such as underwater irradiance, water temperature, and salinity, and biological parameters such as shoot density, biomass, shoot morphology, and leaf productivity were measured in two bay systems (Jindong Bay and Gamak Bay) on the southern coast of Korea. While underwater irradiance did not show distinct seasonal trend, water temperature at both sites exhibited clear seasonal trend throughout the experimental period. Shoot density increased dramatically during winter due to the increased seedlings through germination of seeds in Jindong Bay and due to the increased lateral shoots in Gamak Bay. Eelgrass biomass increased during winter and decreased during summer. Maximum biomass in Jindong Bay and Gamak Bay was 250.2 and 232.3 g dry weight m–a2, respectively. Carbon incorporation into the eelgrass leaf tissues was estimated from productivity and leaf tissues carbon content. The calculated annual carbon incorporations at the Jindong Bay and Gamak Bay sites were 163 and 295 g C m–`2 y–`1, respectively. This high carbon incorporation into seagrass tissues suggests that seagrass habitats play an important role as a carbon absorber in the coastal and estuarine ecosystems.
THP-1 의 ROS 측정을 통한 당류의 p-toluenediamine sulfate PTD에 의한 피부 감작성 완화능 평가
김지훈 ( Ji Hoon Kim ),조선아 ( Sun A Cho ),최지예 ( Ji Yei Choi ),이존환 ( John Hwan Lee ),김종협 ( Jong Hyub Kim ),박재정 ( Jae Jung Park ),김상훈 ( Sang Hoon Kim ),김왕기 ( Wang Gi Kim ),신계호 ( Kye Ho Shin ) 한국동물실험대체법학회 2013 동물실험대체법학회지 Vol.7 No.1
Allergic contact dermatitis (ACD) is undesired side effect caused by chemical allergens in the development of cosmetics, especially, hair coloring product. It has been reported that reactive oxygen species (ROS) produced by contact allergen plays a crucial role in dendritic cell maturation and contact hypersensitivity. In this study, we evaluated anti-allergic effect of various saccharides on hair dye precursor, p-toluenediamine sulfate (PTD) by use of ROS production in THP-1 cell. 80 μg/ml PTD showed significant increase in the level of ROS production in THP-1 cell. In addition, co-treatment with xylose or galactose showed dose-dependent ROS decrease at a range from 0.1 % to 1 %. Moreover, similar inhibition effect on PTD by xylose or galactose was also observed when the level of CD86 expression on THP-1 was evaluated. Base on these results, in vitro alternative method based on ROS production in THP-1 cells could be applied to screen the substances mitigating allergic contact dermatitis and xylose or galactose could be used in hair color product to reduce skin sensitization potential of aromatic amine hair dye precursors without any disturbing dyeing hair.
연구논문 : THP-1 의 ROS 측정을 통한 당류의 p-toluenediamine sulfate PTD에 의한 피부 감작성 완화능 평가
김지훈 ( Ji Hoon Kim ),조선아 ( Sun A Cho ),최지예 ( Ji Yei Choi ),이존환 ( John Hwan Lee ),김종협 ( Jong Hyub Kim ),박재정 ( Jae Jung Park ),김상훈 ( Sang Hoon Kim ),김왕기 ( Wang Gi Kim ),신계호 ( Kye Ho Shin ) 한국동물실험대체법학회 2013 동물실험대체법학회지 Vol.7 No.1
Allergic contact dermatitis (ACD) is undesired side effect caused by chemical allergens in the development of cosmetics, especially, hair coloring product. It has been reported that reactive oxygen species (ROS) produced by contact allergen plays a crucial role in dendritic cell maturation and contact hypersensitivity. In this study, we evaluated anti-allergic effect of various saccharides on hair dye precursor, p-toluenediamine sulfate (PTD) by use of ROS production in THP-1 cell. 80 μg/ml PTD showed significant increase in the level of ROS production in THP-1 cell. In addition, co-treatment with xylose or galactose showed dose-dependent ROS decrease at a range from 0.1 % to 1 %. Moreover, similar inhibition effect on PTD by xylose or galactose was also observed when the level of CD86 expression on THP-1 was evaluated. Base on these results, in vitro alternative method based on ROS production in THP-1 cells could be applied to screen the substances mitigating allergic contact dermatitis and xylose or galactose could be used in hair color product to reduce skin sensitization potential of aromatic amine hair dye precursors without any disturbing dyeing hair.