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| 1 | Study on Volatile Oil Components and Total Anti-oxidation Capacity and Simulated SOD Activity of Leaves from Michelia chapensis and M. fovelata显示文摘The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solvent extraction and their components were analyzed and quantified by GC/MS. Then, the total anti-oxidation capacity and simulated SOD activity were tested. Forty-four compounds in M. chapensis were identified and the main constituents are aromatic (11.057%), ester (5.041%) and terpenoid compounds (19.772%). Fifty-two compounds in M. foveolata were identified, and their main constituents are aromatic (21.293%), alcohol (17.403%), alkene (6.909%), ester (5.657%) and alkane compounds (5.134%). The results showed that the two oils have strong anti-oxidation capacity and simulated SOD activity. The total anti-oxidation capacities were the highest when the volatile oil from M. foveolata was diluted by 50 times and that from M.chapensis by 100 times. The simulated SOD activity of volatile oil from M. chapensis was higher than that from M. foveolata, and CuZn-SODs in the two oils held 73%-74% of the total SOD. These results will provide scientific foundation for the exploration of the bioactivity of M. chapensis and M. foveolata. | HE Kaiyue ZHANG Shuangquan LI Xiaochu FAN Yasu LI Baocun | 2006 | Chinese Forestry Science and Technology2006，5，3： | 3 |
| 2 | Experimental Study on Performance of a Closed Wet Cooling Tower for Air Wet-Bulb Temperature near 0°C显示文摘Closed wet cooling towers(CWCTs) are used widely because of their better water quality and smaller water consumption. However, the operating parameters shown in the technical documents are only for rated conditions in summer, not for any other conditions, especially in low air wet-bulb temperature areas such as those near 0℃. In addition, CWCTs often fail to achieve the designed cooling effect at low air wet-bulb temperatures. A experiment set of CWCT was built, and the performance of the CWCT at low air wet-bulb temperature near 0℃ was investigated. The impact of the operating parameters(air flow rate, cooling water flow rate, and spray water flow rate) on the heat and mass transfer performance of the CWCT was measured and analyzed. The results show the cooling performance of the CWCT at an air wet-bulb temperature 0℃, 2℃, and 4℃ is about 47%–63% of the rated operating condition;the optimal operating parameters of these conditions for the CWCT are just the same as those of the rated operating condition in summer. According to the experimental results, some operating advices are given. | ZHOU Yasu ZHANG Pan ZHAO Jingde YANG Honghai BAI Yufeng | 2019 | Journal of Thermal Science2019，28，5： | 1 |
| 3 | Cloning and characterization of gene for a new epithelial β-defensin 显示文摘 | Zhang G Hiraiwa H Yasue H | 1999 | J Biol chem1999，274，24： | 1 |
| 4 | Cloning and charac2terization of the gene for a new epithelialβ-defensin显示文摘 | Zhang G L Hiraiwa H Yasue H | 1999 | JBio Chem1999，274，： | 1 |
| 5 | Cloning and characterization of gene for a new epithelial beta-defensin Gene structure,chromosomal localization and evidence for it constitutive expression显示文摘 | Zhang G Hiraiwa H Yasue H | 1999 | J Biol Chem1999，274，24： | 1 |
| 6 | Cloning and characterization of the gene for a new epithelial beta-defensin:genomic structure, chromosomal localization, and evidence for its constitutive expression 显示文摘 | Zhang G Hiraiwa H Yasue H | 1999 | J Biol Chem1999，274，24： | 1 |
| 7 | SeCEE: Edge Environment Data Sharing and Processing Framework with Service Composition显示文摘 | Yasu Zhang Haiquan Wang Jiejie Zhao Bo An | 2018 | 国际计算机前沿大会会议论文集2018，，1： | 0 |
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