排序方式: 共有5条查询结果,搜索用时 15 毫秒
1
1.
2.
Alves E Velini ED Trindade ML Cataneo AC Marino CL Mori ES Guerrini IA Furtado EL Wilcken CF 《Journal of environmental science and health. Part. B》2005,40(1):151-157
Oxidative stress generating active oxygen species has been proved to be one of the underlying agents causing tissue injury after the exposure of Eucalyptus (Eucalyptus spp.) plants to a wide variety of stress conditions. The objective of this study was to perform data mining to identify favorable genes and alleles associated with the enzyme systems superoxide dismutase, catalase, peroxidases, and glutathione S-transferase that are related to tolerance for environmental stresses and damage caused by pests, diseases, herbicides, and by weeds themselves. This was undertaken by using the eucalyptus expressed-sequence database (https//forests.esalq.usp.br). The alignment results between amino acid and nucleotide sequences indicated that the studied enzymes were adequately represented in the ESTs database of the FORESTs project. 相似文献
3.
4.
超声波CT一种热测量方法,具有不接触、对温度场不干扰的优点。本文发展一种新的超声波CT再现方法,用于解决受限透视角度所产生的信息量不足的问题。新的超声波CT再现算法建立在逆矩阵变换的基础上,它不同于通常的采用SL过滤器的所谓FBPCT再现方式。论文中描述了三种CT迭代再现算法,用计算机模拟结果和三维温度场测量实验数据验证了再现算法的可靠性。同时根据计算和实验结果,建议在受限的透视角度情况下,迭代方法采用修正的正则最小二乘法CGM是合适的。 相似文献
5.
1