恒稳磁场效应对多元束配合物体系显色反应影响的研究(Ⅱ)

研究了恒稳磁场效应对W（V）－KSCN－RhB－PVA124体系显色反应的影响,发现在一定范围内,恒稳磁场能显著地提高该多元配合物体系显色反应的灵敏度．在0．05μg／mLW（V）0．7％KSCN,0．05％TiCl31．50mol／LHCl．0．12％PVA1240．0045％的RhB和室温条件下,强度为80mT的恒稳磁场能将最大吸收波长580nm处的显色灵敏度提高65．1％．     

黑龙江省农业可持续发展

黑龙江是农业大省,资源丰富,土地辽阔,具有很大的发展潜力,但是农业创新能力不强。通过对资源优化配置和合理利用,调整产业结构,以实现农业可持续发展。     

Genomic instability in Gadd45a-deficient mice.

Gadd45a-null mice generated by gene targeting exhibited several of the phenotypes characteristic of p53-deficient mice, including genomic instability, increased radiation carcinogenesis and a low frequency of exencephaly. Genomic instability was exemplified by aneuploidy, chromosome aberrations, gene amplification and centrosome amplification, and was accompanied by abnormalities in mitosis, cytokinesis and growth control. Unequal segregation of chromosomes due to multiple spindle poles during mitosis occurred in several Gadd45a -/- cell lineages and may contribute to the aneuploidy. Our results indicate that Gadd45a is one component of the p53 pathway that contributes to the maintenance of genomic stability.     

动物组织石蜡切片的不脱蜡染色方法

本文以东此鼢鼠(Myospalax psilurus)内脏为材料,研究了苏木素——伊红对动物组织石腊切片的不脱蜡染色方法。确定染色程序,简化制片过程,并提高制片镜检效果。     

Effect of actinomycin D on Trypanosoma cruzi

Viable metacyclic forms of T. cruzi, Y strain, treated with an adequate dose of actinomycin D (50 micrograms Act-D/ml/10(7) parasites/ml for 72 h at 28 degrees C) showed the following properties: 1) they lost their ability to replicate in culture medium, in blood and in tissues of normal mice and were no longer able to incorporate tritiated thymidine; 2) they could not penetrate into Vero cells and could not replicate inside normal macrophages; 3) they retained their immunogenicity and the ability to protect mice against a virulent infection; 4) they did not induce histological lesions as described in chronic experimental Chagas' disease.     

柠檬酸生产过程中溶解氧控制策略的研究

溶解氧是柠檬酸发酵过程中的重要参数之一，但由于影响因素很多，精确模型难以建立，所以不易获得满意的控制效果。本文提出一种选择一预测控制方法。通过仿真证明该方法简单、易实现，且有较好的鲁棒性。