2 0 1 7 정기총회 및 제1 차 학술발표회 7 1 2 0 1 7 제2 차 바이오도시포럼 7 5 Ⅱ. 학회 소식 Ⅰ. 논 문 목 차 C o n t e n t s eISSN ... more 2 0 1 7 정기총회 및 제1 차 학술발표회 7 1 2 0 1 7 제2 차 바이오도시포럼 7 5 Ⅱ. 학회 소식 Ⅰ. 논 문 목 차 C o n t e n t s eISSN 2508-8920 pISSN 2508-903X
This study was conducted to assess the usefulness of the temperature characteristics of the tidal... more This study was conducted to assess the usefulness of the temperature characteristics of the tidal flat sediments during low tide as a environmental factor, and burrowing behaviour, fatness, total hemocyte counts(THCs) and differential hemocyte counts(DHCs) of hard clam Meretrix lusoria as biological activity indices for the management of hard clam farms located in Taean(Chungnam province) and Gimje(Jeonbuk province) tidal flat in Korea. Temperature ranges of the sediment at 1cm depth during spring(March to May) and summer(June to August) in Taean(where the exposure time was about hours during low tide) were , respectively. Even though there was no significant difference(P>0.05), temperatures of the surface sediment where submerged with remained seawater were generally higher than that of uncovered with seawater. Burrowing depths of normally digged hard clams were 0.9{\sim}3.6cm from March to October, 2002. In the field experiment performed at Taean farming ground covered with sea...
Air pollution caused by highly concentrated particulate matter is recognized as the biggest probl... more Air pollution caused by highly concentrated particulate matter is recognized as the biggest problem in Korean society. Since the problem is directly related to human life and local people's livelihoods, the demand for fundamental policies rather than short-term measures is growing. In this context, the strong policies of Seoul metropolitan government including emergency reduction measures which require citizens’ participation are getting attention and debate. Given the intense interest and urgency of this issue, the policy to address this issue has been actively discussed, formed, and framed by various social actors. These discursive constructions affect a broader range of social practices of the particulate matter problem and related policies. Through firstly conducting a survey on public perception of air pollution policies in Seoul, the current status of policy awareness and their methods of acquiring information were investigated. Based on the obtained understanding from the...
Protons may have contributed to the evolution of plants as a major component of cosmic-rays and a... more Protons may have contributed to the evolution of plants as a major component of cosmic-rays and also have been used for mutagenesis in plants. Although the mutagenic effect of protons has been well-characterized in animals, no comprehensive phenotypic and genomic analyses has been reported in plants. Here, we investigated the phenotypes and whole genome sequences of Arabidopsis M2 lines derived by irradiation with proton beams and gamma-rays, to determine unique characteristics of proton beams in mutagenesis. We found that mutation frequency was dependent on the irradiation doses of both proton beams and gamma-rays. On the basis of the relationship between survival and mutation rates, we hypothesized that there may be a mutation rate threshold for survived individuals after irradiation. There were no significant differences between the total mutation rates in groups derived using proton beam or gamma-ray irradiation at doses that had similar impacts on survival rate. However, proton...
To overcome the challenges related to food security, digital farming has been proposed, wherein t... more To overcome the challenges related to food security, digital farming has been proposed, wherein the status of a plant using various sensors could be determined in real time. The high-throughput phenotyping platform (HTPP) and analysis with deep learning (DL) are increasingly being used but require a lot of resources. For botanists who have no prior knowledge of DL, the image analysis method is relatively easy to use. Hence, we aimed to explore a pre-trained Arabidopsis DL model to extract the projected area (PA) for lettuce growth pattern analysis. The accuracies of the extract PA of the lettuce cultivar “Nul-chung” with a pre-trained model was measured using the Jaccard Index, and the median value was 0.88 and 0.87 in two environments. Moreover, the growth pattern of green lettuce showed reproducible results in the same environment (p < 0.05). The pre-trained model successfully extracted the time-series PA of lettuce under two lighting conditions (p < 0.05), showing the poten...
International journal of analytical chemistry, 2017
The flowers of Chrysanthemum morifolium Ramat. have been used as an herbal tea and in traditional... more The flowers of Chrysanthemum morifolium Ramat. have been used as an herbal tea and in traditional medicine, and the plant has been developed to produce horticultural cultivars of various colors and shapes. In this study, a new chrysanthemum cultivar with dark purple petals (C. morifolium cv. ARTI-Dark Chocolate; ADC) was developed by radiation-induced mutation breeding of its original cultivar with purple striped white petals (C. morifolium cv. Noble Wine, NW). The phenolic profile and antioxidant property of ADC were investigated and compared with NW and the commercially available medicinal herb, C. morifolium with yellow petals (CM), in order to find a scientific support to produce a new source of natural antioxidant. Flavonoid and phenolic acid profiles of the ethanol extracts of the three flowers were analyzed by high-performance liquid chromatography-diode array detector-electrospray ionization mass spectrometry (HPLC-DAD-ESIMS), while antioxidant properties were evaluated usin...
Seed storage proteins (SSPs) such as glutelin, prolamin, and globulin are abundant components in ... more Seed storage proteins (SSPs) such as glutelin, prolamin, and globulin are abundant components in some of the most widely consumed food cereals in the world. Synthesized in the rough endoplasmic reticulum (ER), SSPs are translocated to the protein bodies. Prolamins are located at the spherical protein body I derived from the ER, whereas, glutelins and globulin are accumulated in the irregularly shaped protein bodies derived from vacuoles. Our previous studies have shown that the individual suppression of glutelins, 13-kDa prolamins and globulin caused the compensative accumulation of other SSPs. Herein, to investigate the phenotypic and molecular features of SSP deficiency transgenic rice plants suppressing all glutelins, prolamins, and globulin were generated using RNA interference (RNAi). The results revealed that glutelin A, cysteine-rich 13-kDa prolamin and globulin proteins were less accumulated but that glutelin B and ER chaperones, such as binding protein 1 (BiP1) and protein ...
Angular magnetoresistance study has been a subject for intensive investigation, both theoreticall... more Angular magnetoresistance study has been a subject for intensive investigation, both theoretically and experimentally. According to the plane in which the magnetic field rotates, various unconventional features have been observed. More than half a dozen theories have been developed to explain the experimental results, but major parts of the phenomena are yet to be understood. In addition to the three sister compounds, (TMTSF)2X (X = ClO4, PF6, and ReO4), that we have studied extensively, another member of the Bechgaard salt (TMTSF)2FSO3 becomes particularly interesting because its angular magnetoresistance can only be understood with a two‐dimensional electron model. We report the azimuthal angle dependence of its oscillations and determination of the cross section of the Fermi surface.
2 0 1 7 정기총회 및 제1 차 학술발표회 7 1 2 0 1 7 제2 차 바이오도시포럼 7 5 Ⅱ. 학회 소식 Ⅰ. 논 문 목 차 C o n t e n t s eISSN ... more 2 0 1 7 정기총회 및 제1 차 학술발표회 7 1 2 0 1 7 제2 차 바이오도시포럼 7 5 Ⅱ. 학회 소식 Ⅰ. 논 문 목 차 C o n t e n t s eISSN 2508-8920 pISSN 2508-903X
This study was conducted to assess the usefulness of the temperature characteristics of the tidal... more This study was conducted to assess the usefulness of the temperature characteristics of the tidal flat sediments during low tide as a environmental factor, and burrowing behaviour, fatness, total hemocyte counts(THCs) and differential hemocyte counts(DHCs) of hard clam Meretrix lusoria as biological activity indices for the management of hard clam farms located in Taean(Chungnam province) and Gimje(Jeonbuk province) tidal flat in Korea. Temperature ranges of the sediment at 1cm depth during spring(March to May) and summer(June to August) in Taean(where the exposure time was about hours during low tide) were , respectively. Even though there was no significant difference(P>0.05), temperatures of the surface sediment where submerged with remained seawater were generally higher than that of uncovered with seawater. Burrowing depths of normally digged hard clams were 0.9{\sim}3.6cm from March to October, 2002. In the field experiment performed at Taean farming ground covered with sea...
Air pollution caused by highly concentrated particulate matter is recognized as the biggest probl... more Air pollution caused by highly concentrated particulate matter is recognized as the biggest problem in Korean society. Since the problem is directly related to human life and local people's livelihoods, the demand for fundamental policies rather than short-term measures is growing. In this context, the strong policies of Seoul metropolitan government including emergency reduction measures which require citizens’ participation are getting attention and debate. Given the intense interest and urgency of this issue, the policy to address this issue has been actively discussed, formed, and framed by various social actors. These discursive constructions affect a broader range of social practices of the particulate matter problem and related policies. Through firstly conducting a survey on public perception of air pollution policies in Seoul, the current status of policy awareness and their methods of acquiring information were investigated. Based on the obtained understanding from the...
Protons may have contributed to the evolution of plants as a major component of cosmic-rays and a... more Protons may have contributed to the evolution of plants as a major component of cosmic-rays and also have been used for mutagenesis in plants. Although the mutagenic effect of protons has been well-characterized in animals, no comprehensive phenotypic and genomic analyses has been reported in plants. Here, we investigated the phenotypes and whole genome sequences of Arabidopsis M2 lines derived by irradiation with proton beams and gamma-rays, to determine unique characteristics of proton beams in mutagenesis. We found that mutation frequency was dependent on the irradiation doses of both proton beams and gamma-rays. On the basis of the relationship between survival and mutation rates, we hypothesized that there may be a mutation rate threshold for survived individuals after irradiation. There were no significant differences between the total mutation rates in groups derived using proton beam or gamma-ray irradiation at doses that had similar impacts on survival rate. However, proton...
To overcome the challenges related to food security, digital farming has been proposed, wherein t... more To overcome the challenges related to food security, digital farming has been proposed, wherein the status of a plant using various sensors could be determined in real time. The high-throughput phenotyping platform (HTPP) and analysis with deep learning (DL) are increasingly being used but require a lot of resources. For botanists who have no prior knowledge of DL, the image analysis method is relatively easy to use. Hence, we aimed to explore a pre-trained Arabidopsis DL model to extract the projected area (PA) for lettuce growth pattern analysis. The accuracies of the extract PA of the lettuce cultivar “Nul-chung” with a pre-trained model was measured using the Jaccard Index, and the median value was 0.88 and 0.87 in two environments. Moreover, the growth pattern of green lettuce showed reproducible results in the same environment (p < 0.05). The pre-trained model successfully extracted the time-series PA of lettuce under two lighting conditions (p < 0.05), showing the poten...
International journal of analytical chemistry, 2017
The flowers of Chrysanthemum morifolium Ramat. have been used as an herbal tea and in traditional... more The flowers of Chrysanthemum morifolium Ramat. have been used as an herbal tea and in traditional medicine, and the plant has been developed to produce horticultural cultivars of various colors and shapes. In this study, a new chrysanthemum cultivar with dark purple petals (C. morifolium cv. ARTI-Dark Chocolate; ADC) was developed by radiation-induced mutation breeding of its original cultivar with purple striped white petals (C. morifolium cv. Noble Wine, NW). The phenolic profile and antioxidant property of ADC were investigated and compared with NW and the commercially available medicinal herb, C. morifolium with yellow petals (CM), in order to find a scientific support to produce a new source of natural antioxidant. Flavonoid and phenolic acid profiles of the ethanol extracts of the three flowers were analyzed by high-performance liquid chromatography-diode array detector-electrospray ionization mass spectrometry (HPLC-DAD-ESIMS), while antioxidant properties were evaluated usin...
Seed storage proteins (SSPs) such as glutelin, prolamin, and globulin are abundant components in ... more Seed storage proteins (SSPs) such as glutelin, prolamin, and globulin are abundant components in some of the most widely consumed food cereals in the world. Synthesized in the rough endoplasmic reticulum (ER), SSPs are translocated to the protein bodies. Prolamins are located at the spherical protein body I derived from the ER, whereas, glutelins and globulin are accumulated in the irregularly shaped protein bodies derived from vacuoles. Our previous studies have shown that the individual suppression of glutelins, 13-kDa prolamins and globulin caused the compensative accumulation of other SSPs. Herein, to investigate the phenotypic and molecular features of SSP deficiency transgenic rice plants suppressing all glutelins, prolamins, and globulin were generated using RNA interference (RNAi). The results revealed that glutelin A, cysteine-rich 13-kDa prolamin and globulin proteins were less accumulated but that glutelin B and ER chaperones, such as binding protein 1 (BiP1) and protein ...
Angular magnetoresistance study has been a subject for intensive investigation, both theoreticall... more Angular magnetoresistance study has been a subject for intensive investigation, both theoretically and experimentally. According to the plane in which the magnetic field rotates, various unconventional features have been observed. More than half a dozen theories have been developed to explain the experimental results, but major parts of the phenomena are yet to be understood. In addition to the three sister compounds, (TMTSF)2X (X = ClO4, PF6, and ReO4), that we have studied extensively, another member of the Bechgaard salt (TMTSF)2FSO3 becomes particularly interesting because its angular magnetoresistance can only be understood with a two‐dimensional electron model. We report the azimuthal angle dependence of its oscillations and determination of the cross section of the Fermi surface.
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