高等学校学科知识联盟

借用企业知识联盟的一些思想,阐述了高校学科知识联盟的形式、意义以及构建方法。     

靖西县新圩铝土矿地质特征及控矿因素

根据多年的实际工柞经验，论述了靖西新圩铝土矿床的地质特征及控矿因素。     

辽宁大学生身体健康状况的调查研究

运用问卷调查、健康检测及数理统计等方法,对辽宁大学生健康状况及影响诱因进行调查分析。结果表明:大学生身体健康状况基本良好,运动目的性呈现多元倾向。部分学生的认识和行为表现不一致,健康知识的知晓度欠缺,导致身体健康水平不高。提出相应改善对策,为高校实施健康教育、科教兴省提供参考。     

Specific anti-tumor effect induced by attenuated Salmonella typhimurium vaccine expressing extracellular region of vascular endothelial growth factor receptor 2

The purposes of this research were to study the stable expression of exogenous gene encoding therapeutic protein in attenuated Salmonella typhimurium, observe the metabolism of oral gene vaccine carried by attenuated Salmonella typhimurium in BALB/c mouse, and investigate the feasibility of prevention and treatment of tumors by the recombinant bacteria. Recombinant plasmid pcDNA3.1 VEGFR2(n1-7) was transformed into competent attenuated Salmonella typhimurium SL3261 to develop oral DNA vaccine SL3261-pcDNA3.1 VEGFR2(n1-7). To observe whether the exogenous gene can be expressed in the recombinant bacteria, PCR was performed to amplify the CMV promoter of the eukaryotic expression vector as the proof of stable expression of exogenous protein; transmission elec- tron microscopy (TEM) was applied to observe the morphology of the recombinant bacteria to confirm that the exogenous gene has no impact on the growth of the bacteria, and then BALB/c mice were immunized with the gene vaccine. After inoculation of the gene vaccine, the recombinant bacteria SL3261 could be detected in the tissues such as small intestine, colon, liver and spleen. And then, mice in each group were challenged with tumor cells. The results of animal experiment showed that tumor growth of the mice in experimental group was inhibited and survival time of immunized mice was prolonged compared with control groups. A higher lymphocyte infiltration in tumors from animals treated with DNA vaccine was observed. Immunohistochemical analysis of tumor samples revealed an en- hanced accumulation of CD8 cytotoxic T lymphocytes, as well as an increase in CD4 cells in the tumors of animals treated with the oral gene vaccine compared to tumors from control group mice. Ultrastructure of the tumor tissue showed that tumor cells in the samples of the immunized mice were well-differentiated. Our research confirmed that the exogenous gene can be stably expressed in the attenuated Salmonella typhimurium and has no impact on the growth of the recombinant bacteria; the exogenous gene can de delivered to the host by attenuated Salmonella typhimurium to produce anti-tumor effect with no obvious cytotoxity to the host. In this study, it is established that attenuated Salmonella typhimurium could be used as a vector for oral gene vaccine, and our study provided a theoretical basis for the body distribution and the metabolism of the recombinant bacteria. This strategy may provide a simple, safe and effective way for the prevention and treatment of tumors.     

直面百姓苦难的民众情怀

胡学文以塞外坝上农民生活为核心的底层写作,以直面现实的勇气与真诚,写出了现代化进程中被文明、进步所遮蔽的偏远乡村惊人的苦难与愚昧,显示了作者直面黑暗的精神和同情民众的情怀。     

保障公民劳动就业权的里程碑

就业促进法这部法律属于经济法中的宏观经济调控法，把它放到宏观经济调控法的结构中看，仍有一些问题值得探讨和研究。     

加强意识形态工作 巩固意识形态安全

在国内外综合因素的影响下,我国主流意识形态的指导地位存在安全隐患,因此加强意识形态工作,确保意识形态安全是摆在我们面前的一项重大而艰巨的任务。     

潮流计算中的数学方法——牛顿—拉夫逊法

本文介绍了一种解非线性代数方程组的数学方法——牛顿-拉夫逊法,并将其应用于电力系统潮流计算中。采用本文方法的计算结果表明该教学方法在电力系统潮流问题中是收敛的;同时计算结果与电力专业软件的计算结果保持了一致,从而验证了结果的正确性。     

绿洲-荒漠生态系统演化因素及其非线性探讨——以新疆为例

对立统一于干旱区的绿洲—荒漠生态系统在降水等自然因素和人类活动等人为因素的影响下不断进行着演化.从长期看,这一演化过程具有不可预测性,短期内却有细微可预见性.现如今在绿洲扩展同时,荒漠也在扩展,整体趋势仍是荒漠在扩展.为维持绿洲的稳定性,促使绿洲—荒漠系统处于一种稳定的发展趋势,本文从分析绿洲-荒漠这对对立统一的生态系统入手,在探讨引起这对生态系统演化的自然因素和人为因素的基础上,确定了自然因素中的降水和人为因素中的政府调控行为为演化的主导因素,初步探索了促使这对生态系统统演化的主导因素作用所具有的非线性关系,这对维持绿洲的稳定性,抑制荒漠扩展有一定的实际意义.     

升格后院校图书馆影响电子资源利用和发展因素的探讨

阐述了学校升格后电子资源对图书馆发展的影响以及分析了目前影响升格后院校图书馆电子资源利用和发展的因素,并提出了相应的改善建议和意见。