灭幼脲超低量防治柳毒蛾技术

本文通过灭幼脲超低量防治柳毒蛾试验 ,得出灭幼脲防治柳毒蛾的防治效果可达 98% ,并有明显的延续效应。同时提出防治适期、最佳用药量的喷雾作业方式。     

The mitogenic activity decline of a haFGF mutant and its mechanism

AIM: To observe the effects of the human acidic fibroblast growth factor mutant (mhaFGF)， lacking 27 amino acids at N-terminal， on the proliferation and signal transduction of the hepatocarcinoma cells. METHODS: The hepatocarcinoma cells were treated with human acidic fibroblast growth factor (haFGF) and mhaFGF, respectively. The expression levels of the signal proteins, Grb2 and Erk1/2, in the hepatocarcinoma cells were detected by semi-quantitative Western-blotting after treated for 15 min. The mitogenic activity of both haFGF and mhaFGF was detected by MTT method and the cell cycle was analysed by flow cytometer (FCM) after treated for 48 h. RESULTS: The mitogenic activity and the ratio of G1 and S phase cells in mhaFGF-treated cells were markedly lower than that of the haFGF, and close to that of the control group. The expression level of both Grb2 and Erk1/2 in the mhaFGF-treated cells were lower than those in the haFGF- treated cells. CONCLUSION: The decrease in the mitogenic activity of mhaFGF is probably associated to its down-regulating the expression of the signal molecular, MAPK-ERK1/2 and Grb2.     

云南省大黄藤资源培育的研究

大黄藤具有较高的药用价值.在介绍大黄藤的适生环境及药用价值的基础上,论述了云南省的大黄藤资源状况及人工种植情况,针对其开发利用价值优势,对云南大黄藤的资源培育提出了5点建议.     

Cardiomyocyte apoptosis and related genes expression in sinoaortic-denervated rats

AIM: To study apoptosis and related genes expressions of cardiomyocytes in sinoaortic-denervated(SAD) rats. METHODS: SAD or sham-operation (Sham) was performed in male SD rats at the age of 10 weeks. After 16 weeks, apoptotic cells were stained in situ by terminal dexynucleotidyl-transferase mediated-dUTP nick end labeling (TUNEL). All stained results were analysised using computer image analysis techniques. Protein products and mRNA of Bcl-2, Bax, Fas and Fas-L were assessed by quantitative immunohistochemistry and RT-PCR. RESULTS: The numbers of apoptotic cardiomyocytes were significantly increased in SAD rats, the expressions of Bcl-2 were significantly decreased, whereas Bax,Fas and Fas-L were significantly increased in SAD rats.CONCLUSION: Apoptosis and dysregulation of gene expressions may be involved in the cardiomyocytes remodeling in SAD rats.     

论校报在高校思想政治工作中的作用

校报是学校重要的舆论阵地 ,同时也是对学生开展思想政治工作的桥梁和纽带。校报在大学生的人格塑造、校园文化建设及提高学生思想素质方面发挥着不可缺少的作用。当前 ,校报也担负着推进大学生自觉学习、研究和实践“三个代表”的历史责任。通过校报这个窗口 ,培养学生的爱国精神 ,坚定共产主义信念 ,使青年学子未来能够创造出无愧于时代和人民的业绩     

多年生杜仲叶林栽培模式及其更新复壮

通过对叶林模式的田间生物量进行调查,同时又对叶林模式更新复壮与不复壮两种处理模式的田间生物量进行了对比分析,发现两种处理模式的年变化规律有着明显的差异。     

干旱胁迫下早稻幼苗特异性表达cDNA的筛选

以生长在特殊环境中（26℃、12h／12h光／暗周期、光强2500lx）的早稻297二叶一心期幼苗为材料，构建了干旱胁迫诱导表达差减文库。以干旱为处理，而有水状态为对照。通过筛选差减文库，共获得了141个克隆。分析表明，差减文库建立成功。     

大花蕙兰栽培技术

大花蕙兰属兰科多年生草本植物。其花色鲜艳、气味芬芳、高雅名贵，备受消费者青睐。近年来，我国花卉市场上出现的大花蕙兰，大多是从韩国、日本、荷兰等国家进口的。虽价格昂贵，但市场销售良好，具有一定的市场空间。由于大多数消费者不懂养护技术，往往待花期过后，就把母本扔掉，造成很大浪费。其实大花蕙兰栽培技术并不难，只要把握住主要关键环节就可以生产出高质量产品。     

Al-Mg-Sc-Zr合金的原子成键和力学性能

运用固体经验电子理论(EET),对掺微量Sc和Zr的Al-Mg合金的价电子结构进行计算.结果表明:在合金熔体凝固过程中,Zr,Sc与Al原子存在强烈的相互作用,首先生成初生的Al3Sc和Al3(ZrxSc1-x)粒子作为合金的非均质晶核,起细化晶粒作用;在合金凝固的过程中,由Zr,Sc与基体Al原子的强烈相互作用,易形成Al-Zr,Al-Sc,Al-Zr-Sc偏聚区.在后续的均匀化热处理过程中,容易从这些偏聚区析出细小的与基体共格的次生Al3Sc和Al3(ZrxSc1-x)粒子.由于这些析出的细小粒子与基体共格,并存在强的Al-Zr,Al-Sc共价键,提升了合金整体的共价键强度,阻碍位错的运动,使合金的硬度和强度都得到提高,合金的热稳定性更好.

Abstract：

Valence electron structure of an Al-Mg alloy with minor Sc and Zr was calculated according to the "empirical electron theory (EET) in solid". The results showed that because of the strong interaction of Al atom with Zr and Sc atoms in melting during solidification, the Al3Sc and Al3 (Sc1-xZrx) particles which act as heterogeneous nuclear were firstly crystallized in the alloy to make its grains refiner. In the process of solidification, the Al-Zr, Al-Sc and Al-Zr-Sc segregation regions were formed in the solid solution matrix of the Al-Mg alloy owing to the strong interaction of Al atom with Zr and Sc atoms in bulk of alloy, so in the subsequent homogenization heat treatment, the finer dispersed Al3Zr, Al3 Sc and Al3 (Sc1-xZrx) second-particles coherent with the matrix were precipitated in the segregation region. These finer second-particles with the strong Al-Zr and Al-Sc covalent bonds can strengthen the covalent bonds in the matrix of the alloy, enhance the hardness and strength of the Al-Mg alloy, effectively hinder the interface of grains from migrating and restrain the grains from growing, consequently causing better thermal stability of the Al-Mg alloy.     

干旱处理对华北绣线菊和毛果绣线菊光合作用及相关蛋白表达的影响

以抗旱力弱的毛果绣线菊与抗旱力强的华北绣线菊为试验材料,采用不同程度干旱处理,在测定其光合作用变化的基础上,采用蛋白质组学技术研究两种绣线菊光合作用相关蛋白表达的变化。结果表明:干旱胁迫两种绣线菊光合能力降低,光补偿点和光饱和点降低,说明利用弱光能力提高,华北绣线菊适应弱光环境的能力强于毛果绣线菊。不同水平干旱处理分别鉴定出涉及能量代谢与运输的相关蛋白20种。干旱胁迫下毛果绣线菊中卡尔文循环途径相关酶、光系统Ⅱ中多数放氧复合蛋白和捕光色素复合蛋白、参与光合磷酸化的酶发生显著上调和下调表达;华北绣线菊中参与卡尔文循环代谢相关酶、PSⅠ中反应中心蛋白和参与光合电子传递的蛋白、PSⅡ中捕光色素复合蛋白、参与光合磷酸化与氧化磷酸化的蛋白发生明显的上调和下调表达。干旱胁迫使抗旱力不同的毛果绣线菊和华北绣线菊光合作用相关蛋白均受到影响,毛果绣线菊中多是能量代谢相关蛋白发生显著变化,华北绣线菊中多是能量运输相关蛋白发生显著变化。