Korean Journal of Agricultural Science最新文献_第5页

Variation in the reproductive rate of Trypoxylus dichotomus (Dymastinae: Sacarabaeidae: Coleoptera) by partition 二分隐蝽生殖率的分区变异(拟蝇科:棘翅目:鞘翅目)

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200073

W. Seo, Sang-Eun Park, Y. Youn

引用次数: 0

Effect of salt stress on the anthocyanin content and associated genes in Sorghum bicolor L. 盐胁迫对高粱花青素含量及相关基因的影响。

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200003

Do-Sun Jeon, leesolji, Cho, Sehyun, Seosumin, Kim, Changsoo

引用次数: 7

Risk assessment and evaluation of epidermal growth factor (EGF) transgenic soybean: responses of Cyprinus carpio fed on EGF transgenic soybean 转基因表皮生长因子(EGF)大豆的风险评估与评价:鲤对EGF转基因大豆的反应

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200068

Sung‐Dug Oh, S. Min, J. K. Kim, Jung-Ho Park, Chang-Gi Kim, Seunghyun Park

引用次数: 0

Evaluation and improvement of forest watershed management projects in Korea 韩国森林流域管理项目的评价与改进

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200074

H. Rhee

引用次数: 0

Comparison of the physical characteristics according to the varieties of perilla for the development of a high-quality, high-efficiency cleaner and stone separator 根据紫苏品种的物理特性进行比较，为研制高品质、高效率的清洗机和石料分离器提供依据

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200058

Jong Ryul Park, H. Park, Hye-Rin Park, G.H. Yang, Jung Hyun Lee

{"title":"Comparison of the physical characteristics according to the varieties of perilla for the development of a high-quality, high-efficiency cleaner and stone separator","authors":"Jong Ryul Park, H. Park, Hye-Rin Park, G.H. Yang, Jung Hyun Lee","doi":"10.7744/KJOAS.20200058","DOIUrl":"https://doi.org/10.7744/KJOAS.20200058","url":null,"abstract":"The physical characteristics of the major varieties of perilla were analyzed to use as basic data for the design of a high-quality, high-efficiency perilla cleaner and stone separator. Because the size, thousand-grain weight, angle of repose, angle of friction, bulk density and terminal velocity of perilla have significant differences according to the perilla variety, the different of characteristics by variety should be considered for performance improvement of a perilla cleaner and stone separator. Therefore the cleaner and stone separator using a sieve could be improved by the application of a detachable sieve or by using equipment such as a 2 3 stage sieve and regulating the slope. Moreover, because differences in the terminal velocity occur due to the differences in the size and thousand-grain weight according to the perilla variety, a blower with an adjustable fan speed was considered for the design of the improved cleaner. Additionally, it was shown that the length of perilla has the greatest correlation based on a comparison of the coefficients of the other characteristics. Accordingly, the length of perilla could be used as a major factor for the fine adjustment and parts replacement of the device. These results can be used as basic data for a high-quality, high-efficiency perilla cleaner and stone separator. In the future, the development of the machine and follow-up studies based on the basic data are needed to determine the optimized operating conditions and mechanism of action.","PeriodicalId":17916,"journal":{"name":"Korean Journal of Agricultural Science","volume":"19 1","pages":"717-726"},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88872533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of acute heat stress on feed intake and plasma concentrations of tumor necrosis factor-α and free amino acids in growing pigs 急性热应激对生长猪采食量及血浆肿瘤坏死因子-α和游离氨基酸浓度的影响

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200047

B. Kim, Minji Kim, Hyeran Kim, S. Ji, Ki-Hyun Kim, J. Chun, Y. Baek, Yoori Lee, J. Jeong, S. Lee

引用次数: 2

Flood prediction in the Namgang Dam basin using a long short-term memory (LSTM) algorithm 基于LSTM算法的南江坝流域洪水预测

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200036

Seungsoo Lee, H. An, Young-Teck Hur, Yeonsu Kim, J. Byun

引用次数: 1

Design, manufacture and field test of a surface water storage tank providing irrigation water to upland crops 为旱地作物提供灌溉用水的地表水储罐的设计、制造及田间试验

Korean Journal of Agricultural Science Pub Date : 2020-01-01 DOI: 10.7744/KJOAS.20200089

Hyungjin Shin, Youngjin Kim, Jae Young Lee, Hwang-Hee Kim, S. Jo, Cha Sang-Sun, Seon-ah Hwang, Seung-Kee Lee, Park, Chan-Gi

引用次数: 1

Protective effects of Cirsium japonicum var. maackii against amyloid beta-induced neurotoxicity in C6 glial cells 猕猴桃抗β -淀粉样蛋白诱导的C6胶质细胞神经毒性的保护作用

Korean Journal of Agricultural Science Pub Date : 2019-01-01 DOI: 10.7744/kjoas.20190025

K. Hyun, Min Jeong Kim, C. Myung, Sanghyun Lee, E. Cho

{"title":"Protective effects of Cirsium japonicum var. maackii against amyloid beta-induced neurotoxicity in C6 glial cells","authors":"K. Hyun, Min Jeong Kim, C. Myung, Sanghyun Lee, E. Cho","doi":"10.7744/kjoas.20190025","DOIUrl":"https://doi.org/10.7744/kjoas.20190025","url":null,"abstract":"Alzheimer’s disease (AD) is the most common neurodegenerative disease associated with age, and amyloid beta (Aβ) is known to cause Alzheimer’s disease. In the present study, we investigated the protective effects of Cirsium japonicum var. maackii extract and its fractions against Aβ-induced neurotoxicity in C6 glial cells. The cells treated with Aβ25-35 showed a decrease in cell viability and an increase in reactive oxygen species (ROS) production compared with the non-treated cells. However, the cells treated with the C. japonicum var. maackii extract and its fractions increased the cell viability and inhibited the Aβ-induced ROS production. These results demonstrate the neuroprotective effects of C. japonicum var. maackii against Aβ. To further examine the protective mechanism, we measured inflammation and apoptosis related protein expressions. The cells treated with extract and fractions from C. japonicum var. maackii down-regulated inflammatory related proteins such as cyclooxygenase-2, interleukin (IL)-1β, and IL-6, and attenuated apoptosis related proteins including B-cell lymphoma-2 (Bcl-2) associated X protein/Bcl-2 ratio. In particular, the ethanol and ethylacetate fraction exhibited higher inhibitory effect against ROS production and apoptosis-related protein expressions among the extract and the other fractions. Therefore, this study demonstrated the protective effects of C. japonicum var. maackii extract and its fractions against Aβ-induced neurotoxicity in C6 glial cells through the regulation of oxidative stress, inflammation, and apoptosis, suggesting that it might have potential as a therapeutic for AD.","PeriodicalId":17916,"journal":{"name":"Korean Journal of Agricultural Science","volume":"5 2 1","pages":"369-379"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87694331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Changes in growth performance, carcass characteristics, and meat properties of Hanwoo steers according to supplementation of composite feed additive 添加复合饲料添加剂对韩宇阉牛生长性能、胴体特性和肉品质的影响

Korean Journal of Agricultural Science Pub Date : 2019-01-01 DOI: 10.7744/kjoas.20180070

J. Ahn, Shin Jong Suh, 이창우, 최욱진, 김민지, 최장근, Songihwal, 장선식, E. Kwon, Pakr Byung Ki

{"title":"Changes in growth performance, carcass characteristics, and meat properties of Hanwoo steers according to supplementation of composite feed additive","authors":"J. Ahn, Shin Jong Suh, 이창우, 최욱진, 김민지, 최장근, Songihwal, 장선식, E. Kwon, Pakr Byung Ki","doi":"10.7744/kjoas.20180070","DOIUrl":"https://doi.org/10.7744/kjoas.20180070","url":null,"abstract":"This study was conducted to evaluate the effects of a composite feed additive (CFA) consisting of vitamin C, vitamin E, selenium, and choline on growth performance, carcass characteristics, and meat properties of Hanwoo steers. Twenty-two late fattening steers were randomly assigned to one of two dietary groups, control (commercial concentrate + rice straw) and treatment (commercial concentrate + rice straw + 50 g of CFA). Average daily gain (ADG) was 4.0% higher in treatment than that in control; however, there was no statistically significant difference. The supplementation of CFA had no effect on overall yield or quality traits of carcass. CFA had no effect on chemical composition, water holding capacity, shear force, cooking loss, or myoglobin values in longissimus muscle; however, the content of α-tocopherol was increased by supplementation of CFA (p < 0.01). The contents of α-linolenic acid and n-3 fatty acids were higher in treatment group than in control (p < 0.01). The ratio of n-6/n-3 fatty acids was decreased by supplementation of CFA (p < 0.01). The supplementation of CFA had no effect on pH or thiobarbituric acid reactive substances (TBARS) values in longissimus muscle (raw); however, TBARS (cooked) values were lower in treatment group than in control during refrigerated storage (p < 0.01). Thus, the results indicate that the supplementation of CFA (vitamin C + vitamin E + selenium + choline) had some positive effects on the increase in α-tocopherol and n-3 fatty in longissimus muscle, without any negative effect on growth performance or carcass characteristics of late fattening Hanwoo steers.","PeriodicalId":17916,"journal":{"name":"Korean Journal of Agricultural Science","volume":"101 1","pages":"11-25"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86815022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0