文蛤(Meretrix Meretrix)凝集素(MML)的初步研究——Ⅰ.MML在文蛤体内的分布及纯化

在文蛤(Meretrix Meretrix)体内具有血球凝集活性的凝集素(简称MML),经实验证实仅分布于文蛤外套腔液中。向外套腔液中加入固体硫酸铵达40％时,可使99％的MML沉淀。用不同饱和度的硫酸铵溶液依次对上述沉淀进行抽提,得到MML粗制品溶液,其比活比原始外套腔液提高了约9.95倍,总活力回收达48％。最后用自制的人血浆糖蛋白一Sepharose 4 B亲合层析柱可将上述MML粗制品的比活再提高400多倍。结果与原始外套腔液比较,MML终产品的比活总共提高了4313倍,总活力回收达44.8％,在电泳鉴定时显示出单一的区带。     

B型超声显像对肝脓肿及原发性肝癌的诊断价值

我院1985年至1989年3月对15例肝脓肿及5例原发性肝癌进行B超检查。本文就声像图特征、诊断要点及鉴别诊断加以讨论。     

正方形上Durrmeyer—Bernstein多项式的Lipschitz性质

本文证明正方形上的连续函数f(x,y)与其对应的Durrmeyer-Bernstein多项式,同属一个Lipschitz类。     

高阶非线性非完整系统的相对论性广义Boltzmann—Hamel方程

本文由万有D'Alembert原理推导出高阶非线性非完整系统的相对论性广义Boltzmann-Hamcl方程。     

Jensen不等式的几个推论及其应用

本文以Jensen不等式为基础不等式，并以此推出它的三个推论，这三个推论都具有广泛地应用价值．本文给出了应用这三个推论来推证几个特殊不等式的方法。     

电动汽车技术的现状及前景

本文对电动汽车技术的发展趋势和前景作了概略介绍,并从技术-经济的角度出发,对混合动力汽车的B—ISG装置结构、特点做了分析评述。     

Suppressing progress of pancreatitis through selective inhibition of NF-κB activation by using NAC

OBJECTIVE: To explore the characteristics of NF-KappaB activation in the progress of pancreatitis, the relationship with expression of TNF-alpha in the inflammatory reaction, and prevent the exacerbation of pancreatitis by using NAC. METHOD: Forty-eight rats were divided into three groups: therapy (group C), pancreatitis (group B) and control (group A). NAC served as the inhibitor of NF-KappaB activation. In the time intervals of 1.5, 3.0, 6.0, 12.0 hour, NF-KappaB activation was detected with flow cytometry (FCM) and the expression of TNF-alpha mRNA and protein with in situ hybridization (ISH) and enzyme-linked immuno-sorbent assay (ELISA) respectively. Meanwhile, the level of lipase and amylase in the serum was assayed and the pathological change was evaluated. RESULT: NF-KappaB activation in the pancreatitis group was higher than that in the control group (P<0.01), peaked at 3 hours, and was depressed by the inhibitor of NF-KappaB, NAC. The expression of TNF-alpha as well as the level of lipase and amylase in the serum also rose synchronously with activation of NF-KappaB. In contrast to group A, it was significantly different (P<0.01) in group B. After using NAC in group C, all of these values were decreased and the inflammatory reaction in the pancreas abated evidently. The pathology changes of the pancreas were shown to be alleviated in group C. CONCLUSION: First, NF-KappaB activity is intensively initiated in the course of pancreatitis and shown to have closely relationship with the release of cytokines. Second, use of NAC markedly depressed NF-KappaB activation. TNF-alpha expression is down regulated by cytokines. It is suggested that NAC probably acts as a useful agent for treatment of pancreatitis by indirectly inhibiting activation of NF-KappaB.     

基于WEB的实习管理系统的设计与实现

该系统所面向的对象为学生用户、用人单位、管理员等三大类。管理员可以拥有完全的权限管理系统,而学生用户和用人单位只拥有查询对方信息,修改自己资料和发送信件的权限。整个系统从符合操作简便、界面友好、灵活、使用、安全的要求出发,采用.NET作为前台开发工具,SQL Server作为后台数据库平台的基于B/S的三层模式的管理系统。旨在实现利用数据库来存储、管理大量数据信息,满足不同的用户。设计并完成对其各种数据的分类、查询和统计,尽可能实现友好的操作界面。     

ATP对可溶性糖为底物B-Z反应系统振荡的干扰

可溶性糖，单糖如葡萄糖、果糖，双糖如麦芽糖、乳糖等，对以它们和丙酮为底物的B—Z反应受ATP干扰进行研究．ATP的加入总的结果是延缓了反应的进行，即使振荡反应诱导期增长，周期变大．对这些非线性动力学行为可由FKN机理以合理的解释．