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1. Structural optimal design of grape rain shed | |||
Wang Jian,Yang Hongbing,Guo Shirong | |||
Agronomy 02 November 2011 | |||
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Abstract:Three different structural types model of grape rain shed are established based on PKPM-GSCAD software, and their displacement and maximal stress are compared when wind speed is 20 meters per second. Simulation shows that the wind load performance of model 2 is better than model 1. The horizontal displacement maximal value of model 1 is 1962mm when wind velocity is 20 meters per second. The model 3 is constructed by adding ventilation on model 2.It can be seen that the horizontal displacement maximal value of arch is 13.9 mm and the maximal vertical displacement is 77.5 mm, the the horizontal maximal displacement of column is 0.3mm.Simulation results show that the model 3 has stronger wind load performance. | |||
TO cite this article:Wang Jian,Yang Hongbing,Guo Shirong. Structural optimal design of grape rain shed[OL].[ 2 November 2011] http://en.paper.edu.cn/en_releasepaper/content/4448229 |
2. Oxidative stress and antioxidative activities involved in the development of cucumber fruit | |||
Qian Chunlu,ZHAO Yuying,MI Hongbo,CHEN Xiaohong,MAO Linchun | |||
Agronomy 09 May 2011 | |||
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Abstract:Cucumber fruit growth curve was monitored and fruit samples were harvested at four developmental stages: Immature (3-8 DAA), Mature (9-16 DAA), Breaker (17-22 DAA), Yellow (35-40 DAA). Electrolyte leakage, malondialdehyde (MDA) content, superoxide anion radical (O2.-) production rate and hydrogen peroxide (H2O2) content increased with fruit development. Superoxide dismutase (SOD), peroxidase (POD) consistently increased with advancing fruit maturity and catalase (CAT) displayed a single-peak at Mature period. Ascorbate peroxidase (APX) and glutathione reductase (GR) declined but were activated in Yellow fruit. Monodehydroascorbate reductase (MDHAR) declined and dehydroascorbate reductase (DHAR) increased during fruit growth. However, dehydroascorbate reductase (DHAR) was depressed in Yellow fruit. Ascorbate (ASC) dramatically accumulated and its redox state elevated, while glutathione (GSH) degraded and its redox state declined. Results suggested that enzymatic and non-enzymatic antioxidation mechanisms were involved in the regulation of the development of cucumber fruit. | |||
TO cite this article:Qian Chunlu,ZHAO Yuying,MI Hongbo, et al. Oxidative stress and antioxidative activities involved in the development of cucumber fruit[OL].[ 9 May 2011] http://en.paper.edu.cn/en_releasepaper/content/4425909 |
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