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非透明纤维集合体的树脂浸透速率测试方法探究
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作者 张边江 田晓姗 +1 位作者 韩广雷 武晓春 《聚酯工业》 CAS 2024年第4期30-33,共4页
通过对纤维树脂浸透速率的测试方法进行分析,发现靶环法适合测试树脂浸渍后由不透明变透明的纤维集合体的树脂浸透速率,不适合测试树脂浸渍后不变透明的纤维集合体的树脂浸透速率。文章设计了一种基于靶环法改进的非透明纤维树脂浸透速... 通过对纤维树脂浸透速率的测试方法进行分析,发现靶环法适合测试树脂浸渍后由不透明变透明的纤维集合体的树脂浸透速率,不适合测试树脂浸渍后不变透明的纤维集合体的树脂浸透速率。文章设计了一种基于靶环法改进的非透明纤维树脂浸透速率测试方法—靶盘示踪法。研究结果表明靶盘示踪法测试非透明纤维集合体的树脂浸透速率时,具有测试方法简单、结果稳定的特点。 展开更多
关键词 浸透速率 靶环法 靶盘示踪法 非透明纤维
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Response of Gas Exchange and Water Use Efficiency to Light Intensity and Temperature in Transgenic Rice Expressing PEPC and PPDK Genes 被引量:3
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作者 zhang bian-jiang CHEN Quan-zhan +3 位作者 HUA Chun ZHOU Feng ZHOU Quan-chen JIAO De-mao 《Agricultural Sciences in China》 CAS CSCD 2009年第11期1312-1320,共9页
Aiming to controvert whether the photosynthetic capacity of transgenic rice expressing C4 genes is enhanced, with the C3-type untransformed rice (WT) and maize (a C4 plant) as controls, the activity of C4 photosyn... Aiming to controvert whether the photosynthetic capacity of transgenic rice expressing C4 genes is enhanced, with the C3-type untransformed rice (WT) and maize (a C4 plant) as controls, the activity of C4 photosynthetic enzymes, gas exchange parameters and water use efficiency (WUE) under different light intensities and temperatures, the stable carbon isotope ratio (8-3C) value and the metabolic index of active oxygen as well as plant yield parameters were determined in transgenic rice carrying the PEPC and PPDK genes (CK) in this study. The results showed that the light-saturated photosynthetic rate of CK was intermediate between that of WT and maize, with a slight bias towards that of maize. Under a high light intensity (1 200 μmol m^-2 s^-1) and high temperature (35℃), CK still exhibited higher photosynthetic capacity, while the Gs decreased. The WUE of CK was only slightly increased, and was similar to that of WT. The δ13C value indicated that CK functioned as a C3 plant. In addition, the tolerance to photo-oxidation and grain yield of CK was enhanced by sprayed with NaHSO3. In conclusion, CK possesses higher photosynthetic productivity under the conditions of high photon flux density (PFD), high temperature and spraying with NaHSO3 solution, thereby providing a new technical approach and physiological basis for constructing C4-like rice. 展开更多
关键词 transgenic rice photosynthetic characteristics water use efficiency stomatal conductance
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北高丛蓝莓莱格西的组培快繁
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作者 杨平 张边江 张争 《南京晓庄学院学报》 2018年第6期87-90,共4页
实验以北高丛蓝莓莱格西的腋芽为外植体材料,研究玉米素(ZT)浓度对北高丛蓝莓莱格西蓝莓组培苗快繁组培的影响.结果表明:不定芽诱导中添加1. 0 mg/L~2. 0 mg/L ZT的改良WPM培养基对腋芽的诱导分化效果较好;生根条件以全部营养元素种类... 实验以北高丛蓝莓莱格西的腋芽为外植体材料,研究玉米素(ZT)浓度对北高丛蓝莓莱格西蓝莓组培苗快繁组培的影响.结果表明:不定芽诱导中添加1. 0 mg/L~2. 0 mg/L ZT的改良WPM培养基对腋芽的诱导分化效果较好;生根条件以全部营养元素种类成分减半的改良WPM培养基先黑暗处理一周,再移至光照下持续培养的培养效果较好,其生根率高,根质量好;该研究对北高丛蓝莓"莱格西"的快速繁育和推广有一定的意义. 展开更多
关键词 北高丛蓝莓 莱格西 组培快繁
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