STM隔振系统的复模态分析

用复模态分析法求出了针对扫描隧道显微镜隔振系统的运动解和振幅传递函数的解析表达式，从该表达式可以看出，隔振系统第一级参数极大地影响着整个系统的隔振性能，然后用由本方法计算得出的三维和二维图象分析ＳＴＭ隔振系统，在悬挂弹簧加磁阻尼系统和金属块中夹橡圈系统的比较中，得出了一些有用的结论。     

High levels of unintegrated HIV-1 DNA in brain tissue of AIDS dementia patients

In the host cell, retroviral DNAs exist in three main forms: unintegrated linear, unintegrated circular, and integrated (the provirus). High levels of unintegrated forms of retroviral DNA often correlate with superinfection and accompanying cytopathic effects, as, for example, in the case of feline acquired immunodeficiency. In culture, HIV-1 infection also results in high levels of unintegrated viral DNA although direct correlations with cytopathicity have not been made. The low frequency of HIV-1-infected cells in patients has made it difficult to determine the structure of the viral DNA in fresh tissue samples from AIDS patients by standard methods such as Southern hybridization. The PCR technique however, which allows the detection of viral DNA at levels far below that possible by other hybridization methods is, in its conventional form, of limited use for quantitative analysis. To study the amount and form of HIV-1 DNA in primary tissue of AIDS patients we have therefore modified the PCR method. Our results indicate that each of the three species of viral DNA are detectable in blood and brain of AIDS patients, and that in autopsy samples from patients with HIV encephalitis there is a considerably higher proportion of unintegrated viral DNA.     

大容量锅炉水冷壁系统流量分配规律的研究

本文对大容量自然循环锅炉、UP型直流锅炉和强制循环锅炉的水冷壁系统之流量分配规律进行了理论研究,指明了解决大容量锅炉水冷壁流量分配以及汽-水分配均匀性问题的方案和措施。     

对平面轮的自转运动研究

本文给出了研究平面轮自转运动的正确方法,并得到平面轮自转的基本方程,从而纠正了一种错误的方法和错误的结论。     

浅谈江蓠施肥

本文就如何使江蓠高产,选择典型海区,在相同温度,光照等条件下,对江蓠进行人工科学施肥试验。即以不同浓度不同时间对江蓠分别施下人尿,人粪,鸡粪等有机肥,取得不同结果:鸡粪最好,人尿次之,人粪再次之。这些有机肥,肥源易得,成本又低,群众易于接受,易于推广。这个试验切合海南江蓠生产实际,针对性强,对海南群众性开发江蓠资源具有实际指导意义。     

蛋白质分子的孤立子激发理论的自洽性研究（一）

采用描述蛋白质分子集体激发特征的更精致的波函数｜Ｄ＿１（ｔ）＞和不同的方法，推导和研究了所激发的孤立子的方程及特征，几种方法得到的结果基本一致，表明我们的新理论是自洽的。     

山西省土著大豆根瘤菌共生结瘤固氮特性研究

在山西土壤气候条件下，大豆主栽品种自然结瘤率达９４．６％，单株结瘤量为３７．１±１５．２个，日固氮量０．４４～１，５６ｍｇ，每公顷约固氮３０ｋｇ。单株固氮总活性高峰期随品种和栽培条件的不同有所变化，而单瘤固氮活性的高峰均在花期。土著根瘤茵的固氮强度与结瘤量无相关性，固氮量与单瘤固氮酶活则成显著正相关（ｒ＝０．７１Ｐ＜０．０５）。覆膜栽培和秸秆还田均具有良好的共生固氮生态效应。     

气-固相置换法合成B-ZSM-5型分子筛

B-ZSM-5 molecular sieve was prepared with gas-solid replacement reaction. The parent zeolite, silicalite-Ⅰ was treated by BBr_3 vapour at 550℃. XRD, IR, XPS, and ~(29)Si MAS NMR techniques show that boron is introduced into the framework of silicalite-Ⅰzeolite.     

圆形管道中气-液两相流总体空隙率的测定

作者就圆形管道中气-液两相流总体空隙率的测量进行了研究.对传感器结构提出了优化条件,使用参考电极测定液相电导率的变化,以克服对测量结果的影响.