生物酶解法萃取废次烟叶的研究

对废次烟叶进行加酶萃取,相比传统水溶液萃取,其萃取效率提高了21.2个百分点:通过对酶提取液中还原糖和挥发性成分分析测定发现,还原糖含量增加15.4％,挥发性成分总量增加46.9％；酶提取废次烟叶提取物卷烟加香评析表明,酶法萃取烟叶碎片提取物能增加烟香,降低一定的刺激性,掩盖杂气.     

喀什地区棉田障碍因素调查及对策研究

经过 3a的调查研究 ,摸清了喀什地区棉田主要障碍因素 ,并针对性地进行了对策研究 ,使低产田改良成效显著 ,为棉花高产优质高效栽培技术提供了理论依据。     

鸟氨酸脱羧酶抗酶1基因的结构和功能

鸟氨酸脱羧酶抗酶1(OAZ1)基因可通过特殊的+1移码机制翻译全长的功能蛋白。研究发现,OAZ1能与鸟氨酸脱羧酶(ODC)结合并降解ODC,负调控细胞内多胺的水平;OAZ1还能降解Cyclin D1、Cyclin E1和Smad1周期蛋白,阻滞细胞周期;此外,近年来研究表明,OAZ1还具有抗肿瘤效应和调控动物繁殖的功能。抗酶抑制因子能竞争性结合ODC-OAZ1复合体中的OAZ1,从而阻止ODC降解;天门冬酰胺也能通过抑制OAZ1的翻译来调节ODC的活性。本文就OAZ1基因结构和功能的研究现状作一综述。     

Immunologic mechanism of CXCL10 and its receptor involved in endometriosis

AIM: To investigate the immunologic mechanism of CXC chemokine ligand 10(CXCL10) and its receptor CXC chemokine receptor 3(CXCR3) involved in the process of endometriosis (EM). METHODS: Serum samples were collected from 3 groups: EM patients without operation (n=76), EM patients with operation (n=10) and the normal control persons (n=76). CXCL10 and CA125 concentrations were detected by means of ELISA and chemiluminometry. Cell surface antigens on the activated PBMC-CD3 and CXCR3, as well as CXCR3 subgene-CXCR3A and CXCR3B were tested by flow cytometry (FC) and RT-PCR when PBMC was separated from women with EM (n=10) and without EM (n=10), and then activated. RESULTS: Serum CXCL10 concentrations between three groups were significanly different (P<0.05). Compared to normal control group, although the supernatant CXCL10 concentration and CD3+/CXCR3+PBMC number in EM group has no significant difference (P>0.05), highly expressed CXCR3B in EM group rather than CXCR3A was observed. CONCLUSION: CXCL10 in women with EM is low, indicating that it plays a vital role in the process of EM and immune system of the women with EM is defected and impaired. The immunoreactivity of PBMC from both EM patients and normal person is same to activated signal, but the productions are different: PBMC in EM group mainly express CXCR3B but PBMC in normal person mainly express CXCR3A after activation, which may be one of the immune mechanisms that EM escapes from immunological lethal effect of the infected host.     

浅析AutoCAD在园林制图中的应用

AutoCAD具有强大的图形绘制和编辑功能，在园林规划中得到大力推广和应用，因此，本文介绍了AutoCAD软件在园林制图中的方法、应用实例及优缺点，希望对园林设计有所帮助。     

黑金河林场森林资源现状及其时间动态研究

文章从林地利用面积和林木蓄积两方面对黑龙江省黑金河林场2007年森林资源现状进行了调查分析，并与1998年调查结果进行了比较。指出了该林场目前存在的问题及今后经营的建议。     

高校校园网内联网计算机的故障分析与维护方案

在高校校园网中,计算机的使用量和计算机的数量与日俱增,无论是负责维护计算机网络教室或者电子阅览室的工程技术人员还是接入校园网的个人用户都会遇到各种各样的计算机故障.本文通过对计算机产生故障现象的分析,对计算机硬件及系统软件的维护提出了解决方法.