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.     

磨机负荷的预测控制

给出了磨机负荷的预测控制算法，仿真结果表明；该算法适用于大滞后、时变的磨机负荷系统，并有很强的鲁棒性。     

Long-range colour-generating interactions across the retina

The existence of colour-generating interactions across the corpus callosum has recently been suggested from observations with a 'split-brain' patient, thus indicating long-range colour computations at the cortical level. Observations on induced colours described here suggest long-range colour computations at the retinal level. If a white surface surrounded by a particular colour is fixated for some time, the resulting after-image has two colours: the surround appears in complementary colour, whereas the white centre takes on the colour of the surround. The question of whether such colour induction is located in the retina or more centrally was tested in a brain-injured patient with hemianopia. It could be demonstrated that areas of the visual field that are no longer represented in the geniculo-striatal pathway still contribute to colour induction, suggesting that colour induction is a retinal phenomenon.     

聚合硫酸铁混凝性能的研究

研究聚合硫酸铁的混凝性能和评价聚合硫酸铁混凝剂时应注意的一些问题     

任意集的模

本文首先引入了内模和外模的概念，然后将复平面内两个非交紧集的模推广到两个任意有界集     

电阻炉温度微机控制系统的研制

以个人计算机为基础，以Ａ／Ｄ转换器为核心，并配以适当的外围接口电路，实现对电阻炉温度自动控制．设计了一种过零检测电路，将ＰＩＤ控制增量转换成占空比，并由数字电路输出有一定占空比的矩形波，利用硬件方法实现普通双向可控硅的同步过零触发从而实现功率可调     

电火花加工的速度与表面粗糙度

本文对电火花的加工速度与表面粗糙度之间的关系进行了理论分析,提出了解决它们之间矛盾的方法。