糖尿病患者红细胞膜流动性及其影响因素的探讨

探讨糖尿病患者红细胞膜流动性及其影响因素,方法对４３例受试者的红细胞膜流动性,脂质过氧化物终产物丙二醛、血清胆固醇、血清甘油三脂和维生素Ｅ进行测定分析。结果：糖尿病组与健康对照组比较,前者是红细胞膜流动性和血清ＶＥ含量显著降低（ｔ＝５．４５３、２．３３９,Ｐ〈０．０１）;血浆丙二醛、血清胆固醇、甘油三脂含量升高,两者比较有显著性差异（ｔ＝３．０２６、２．３８２、２．９６５,Ｐ〈０．０５）。结论：糖     

薄板弹塑性分析的有限梁元法

将薄板的有限元单元用沿其周边的相互刚接的梁元来模拟,把有限个矩形单元变成有限个梁单元,从而把薄板的分析变成刚架的分析,由于梁单元的单刚度统一,故本法应用十分方便,并易于处理复杂的边界条件。     

Tailor-made derivatizing agents for carbonyl compounds using liquid chromatography

A new approach for the synthesis and application of tailor-made derivatizing agents for liquid chromatography is presented. The s-triazine ring serves as the backbone for these substances. Synthesis is performed in three steps based on substitution reactions of cyanuric chloride. A chromophor or fluorophor, a reactive group and a third moiety intended to modify the polarity of the derivatizing agent are coupled to cyanuric chloride. The three groups may be selected freely from molecules which carry functional groups which might be linked to cyanuric chloride. As an example, the synthesis and application of a respective reagent for the determination of aldehydes and ketones using HPLC with fluorescence detection is carried out. Baseline separation of the derivatives and low limits of detection (1.5×10⁻⁹ mol/l for formaldehyde, 2.0×10⁻⁹ mol/l for acetaldehyde and 3.0×10⁻⁹ mol/l for p-tolualdehyde) are obtained with the new versatile reagent.     

质粒pATZ-1的纯化和分子大小的测定

通过 CsCl- EB( 溴化乙锭) 密度梯度离心, 从降解除草剂阿特拉津的假单胞菌 AD1 菌株中分离并纯化出质粒pATZ- 1. 该质粒经 EcoRI消化产生 14 个限制片段, 以DNA 的 Hind片段为分子大小的标准,用作图法测出上述14 个片段的大小之和即pATZ-1 的分子大小为125 kb.     

部分重点高中学生智力与指掌表皮嵴纹特征的初步观察

用碳沫－透明胶带法或直接观察法,以普通校同龄的学习能力较差的学生作对照,观察了重点中学（包括数学特长班）学生的指掌纹指标,筛选出差异较大的皮纹参数进行统计学处理,用瑞文推理测试及相应软件包分析,测出以上两组学生的智商,并同中考成绩做相关分析。结果显示,重点高中学生总指数,第II指基部嵴线数,a-b线数均高于对照组,呈极显著或显著性差异,ATD角（双手）均小于对照组,亦呈极显著性差异,两组的中考成绩及智商均呈极显著差异,智商与中考成绩呈正相关,表明,部分重点中学学生智商高于普通校,且具有一定表皮嵴纹特征,学生的智商部分与遗传有关。     

掺杂对纳米ZnO粉末晶粒度和结构的影响

研究了用化学共沉淀方法分别制备的掺杂Bi,Sb,Co,Cr,Mn和多元掺杂对纳米ZnO粉末晶粒度和相结构的影响,发现经500℃／h热处理后,掺Bi,Mn,Co和Cr的粉末晶粒度没有明显变化,而掺Sb的ZnO粉末晶粒度随Sb含量的增加而减小;掺Bi的粉末除主晶相ZnO外还有BiOCl相,掺Sb的粉末有主晶相和尖晶石相,所掺Mn,Co,Cr均固溶于主晶相ZnO;多元掺杂晶粒度均为30nm,相为主晶相和尖晶石相。     

基于多目标离散粒子群的产品服务系统方案配置规则提取

为有效辅助工程师将顾客需求转化为产品服务系统方案,针对其技术特征,提出一种离散粒子群优化算法(DPSO)与帕累托(Pareto)结合的配置规则提取方法.该方法包括建立产品服务系统配置规则模型及构造Pareto-DPSO算法模型.Pareto-DPSO算法基于Sobol序列的频率初始化方法及离散化粒子更新方式,将连续粒子映射到十进制离散空间;并利用Pareto进行多目标下粒子优劣性评价,以获取非支配的最优规则集.以汽车产品服务系统方案配置设计为例,经与常规多目标粒子群算法及DPSO算法对比,验证了该方法对于解决多维空间内产品服务配置规则挖掘的可行性及有效性.     

1,5‐Dianilinopentane‐1,3,5‐trione: a crystal structure containing two polymorphic domains

Single crystals of the title compound, C₁₇H₁₆N₂O₃, were obtained by gas diffusion. The observed diffraction pattern is compatible with a superposition of reflections from two monoclinic unit cells with the space group C2/c. The two cells share the a and b axes but not the c axis. Both structures contain layers parallel to (001), with molecules connected by intermolecular N—H...O=C hydrogen bonds. The bonding between adjacent layers is weak. Layer displacements result in a crystal structure containing two closely related polymorphic domains. The structure of one polymorph can be derived from the structure of the other if subsequent layers are displaced by (a/4, b/4, 0) for odd‐numbered layers and by (a/4, −b/4, 0) for even‐numbered layers. Three different crystals were analysed and their observed diffraction patterns were similar, showing all three crystals to contain the polymorphic domain structure.     

故障树模块化在装甲车辆灭火系统故障诊断中的应用

为了实现装甲装备灭火系统故障的快速诊断,提出了一种故障树模块化分析方法;对灭火系统故障树进行深度优先最左遍历,并记录遍历过程,按照遍历顺序对故障树中的每个事件进行标定,并将灭火系统故障树划分为相互独立的模块,依据划分的模块可以通过故障现象对模块内的故障进行排查及修复;实验结果分析表明,该方法可以快速修复模块故障,恢复系统功能,简化了以往对灭火系统所有子事件遍历查错的繁琐过程。该方法同样可以计算故障模块的失效概率,并可以实现故障模块的整体更换,恢复系统性能;证明了故障树模块化方法在灭火系统故障诊断中具有较高的效率,简化了灭火系统诊断流程,在装甲车辆其他系统故障诊断中具有借鉴作用,符合现代作战对于装备保障的需求。