复方肿瘤血管生成抑制因子口服液对小鼠免疫功能的影响

为探讨复方肿瘤血管生成抑制因子口服液（ＣＯＬ－ＴＡＩ）对正常及化疗小鼠免疫功能的影响,应用环磷酰胺（ＣＴＸ）对实验小鼠进行化疗或给实验小鼠以致死量的阿糖胞苷（ＡＲＡ－Ｃ）,然后给小鼠口服ＣＯＬ－ＴＡＩ,比较用药组和对照组之间小鼠腹腔巨噬细胞Ｃ３ｂ受体活性、吞噬功能、淋巴细胞酸性非特异性酯酶和生存时间等免疫指标的影响．结果显示ＣＯＬ－ＴＡＩ可明显提高小鼠腹腔巨噬细胞Ｃ３ｂ受体性活,ＣＯＬ－ＴＡＩ对化疗小鼠的免疫缺损有恢复作用,可提高小鼠巨噬细胞吞噬率和吞噬指数,增加ＡＮＡＥ＋（α－乙酸苯酯酶＋）淋巴细胞百分率;ＣＯＬ－ＴＡＩ可显著延长给阿糖胞苷致死量小鼠的生命（Ｐ＜０．０１）．ＣＯＬ－ＴＡＩ具有增强正常和化疗小鼠特异性和非特异性免疫功能,口服ＣＯＬ－ＴＡＩ可显著提高化疗小鼠的免疫水平．     

红松与前红松两种同工酶比较研究

采用聚丙烯酰胺凝胶（ＰＡＧＥ）电泳的方法,测定松属的两个近缘种：红松和前红松针叶的过氧化物酶（ＰＯＤ）、超氧化物歧化酶（ＳＯＤ）两种同工酶,结果表明：红松与红红松针叶中的两种酶同工酶谱存在明显差异,红松具两种酶带,前红松人主有一条,酶带着色深浅与宽窄也不同;但是二者具有相同迁移率的谱带,也反应了物种间亲缘关系,红松的ＰＤＯ同工酶活性高于前红松５倍,ＳＯＤ同工酶活性也比前红松略高,从分子水平上验证了     

英文词汇的近形检索和通配查找

是对一个课程设计实践的小结,讨论了在电子词典中含一定模糊度和近似性的查找所采用的算法,面向这种方法的词汇表的组织和依据;叙述了所采用的软件工程的设计方法     

计算机硬件实验教学的几个问题

指出我国高校计算机应用专业在计算机硬件实验教学上普遍存在的一些问题,分析了其产生的原因,并提出了一些解决这些问题的措施     

穿心暗牛腿钢管混凝土柱节点的试验研究

完成了取自实际工程的两个十字形穿心暗牛腿式钢管混凝土柱节点的足尺试验。基于对试验结果的分析,揭示了钢管混凝土柱节点的受力性能的破坏形态,检验了这种柱节点检造型式的承载能力,并对这种柱节点方案作了分析和评价,为柱节点的设计提供了依据。     

外赋AGB星星风吸积的轨道参量变化方程

用整个系统的角动量守恒条件代替切向动量守恒条件,将星风吸积与盘吸积两种质量吸积一起来,考虑双星系统的轨道偏心率ｅ的二次以上的高次项,重新推导了吸积质量及轨道参量变化方程。     

红假单胞菌R18二氧化碳固定基因的序列测定及其表达

在红假单胞菌Ｒ１８质粒的限制性酶切基础上,建立了该质粒的物理图谱;采用ｄｙｅ ｐｒｉｍｅｒ法测定了Ｒ１８ ＲｕｂｉｓＣＯ基因的部分核酸序列;以ＰＢＲ３２２为载体,将Ｒ１８ ＲｕｂｉｓＣＯ基因转入紫色非硫杆菌Ｒｈｏｄｏｐｓｅｕｄｏｍｏｎａ．ｐａｌｕｓｔｒｉｓ Ｎｏ．７的野生菌及其ＲｕｂｉｓＣＯ ＦｏｒｍＩ缺陷型中,获得的转化子ＭＧ１１和ＭＧ１４的ＲｕｂｉｓＣＯ酶活性分别是其受体菌的１．７７倍和７．１     

Study on the interaction between Jak3 and IL-2R γ using the yeast two-hybrid system

Both interleukin-2 (IL-2) receptor γ subunit and non-receptor tyrosine kinase Jak3 play important roles in IL-2 physiological functions. Jak3 has been known to bind IL-2Rγ and the interaction is very important for IL-2 signaling. In order to find the domains directly involved in the interaction between IL-2Rγ and Jak3, various deletion mutants have been constructed and their interaction has been studied using the yeast two-hybrid system. Results show that the JH3-JH7 region of Jak3 N-terminal can bind to intracellular domain of IL-2Ry directly and the intact structure of JH3-JH7 region is necessary for this combination. In addition, the region from 305 to 317 amino acid residues near the C-terminal of IL-2Ry plays a critical role in this interaction .     

Complex genetic algorithm in continuous space

A new artificial intelligent optimization method, complex genetic algorithm, is presented, and the theoretical analysis for the effective optima-seeking mechanism of the algorithm is finished. The example calculation proves that it is a successful and simple optimization method.     

Harmonic mixing of Bi2Sr2CaCu2O8+x intrinsic junction at millimeter waveband

Using intrinsic Josephson junctions in Ba₂Sr₂CaCu₂O_8+x single crystal, harmonic frequency mixing at 8 and 3 mm wavebands was successfully demonstrated at liquid nitrogen temperatures with harmonic numbers up to 68 and 50 respectively. The dependences of intermediate frequency output on the local oscillator power and dc bias were carefully studied.