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一、矿业工程··································································……(41) 1.矿山开采、机械、运输·············································……(44) 2.选矿········································································……(朽) 3.煤炭(石油)开采·························…     

湖南理工学院学报（自然科学版）第19卷总目次

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基于大刃倾角刀具的玻璃高效精密切削

各种功能玻璃在高技术领域中获得了广泛应用。但功能玻璃大都硬度高、脆性大，易在已加工表面产生裂纹和凹坑。基于大刃倾角刀具的玻璃切削是一种新的加工方法，该方法能在亚毫米级的切削深度下高效地获得无裂纹和凹坑的完整表面。研究了大刃倾角刀具切削玻璃的机理及刀具参数和切削用量对已加工表面质量的影响。研究结果表明，大刃倾角刀具切削玻璃时，表面粗糙度Ra达0.21μm，表面完整性优于传统的玻璃精磨时的表面；要获得较好的已加工表面质量，刀具参数和切削用量都存在一个较佳的取值范围。     

2003年《科技成果纵横》杂志主要目次索引

关注走近中药现代化······························································································1:4-11关注中国高新区聚焦“二次创业”···············································································2:4-19创新的桥梁——科技中介····································…     

《合肥教育学院学报》2001年分类总目录

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中山大学学报(自然科学版)1979～1984年总目录

数学力学计算机科学桨叶的藕合振动·········4········”········,·····“···········,··················……蔡承武、陈树辉1979,1黄金分割法最优性证明·········,··················,,········································一吴兹潜1979,2流控检测平饭间气流流动的分析·····················································,···……郭…     

一九八五年总目录

关子减算子正不动点的存在唯一巾卜···························································……弃叼;钧(t一!)解析函数的奇点与自然边界···········……,··························~·········,·············……木乐华(王一9)充实复形与超图的儿种性)升··················,··············································……张天喝(1…     

《内蒙古师大学报》(自然科学汉文版)1992年总目录

数学优美排列的一个算法及其计数问题·················································一陈志增(1)Sampathkumar猜想的证明·························································……刘孺英(1)无爪图的可扩圈·····································································,·……阿勇嘎(1)关于Carleson型测度及其应用······…     

山东大学学报(自然科学版) 第28卷 1993年 总目次

中立型泛函微分方程解的振动性(l)····……,!’········,··································一,二周德堂(1一])关于Hayman的两个间题········,····……“·····················································一仪洪勋(1一7)线性分式规划间题一个解法···················································,···~············……郑汉森(1一11)有界…     

福建师范大学学报自然科学版一九八八年总目录

第一期优BC卜代数的链条件与合成列··················································……陈昭木(l)可补子空间的一个定理·······,···············································,····……钟怀杰(6)简单刚架的可靠度计算················································……何健丽林忠民(11)模糊数学在线性规划中的应用····················…     

湿地松、火炬松种源抗褐斑病试验和抗病优树选择

<正>用人工接种的方法比较国内的八个湿地松种源对松针褐斑病的感病性的结果表明,不同湿地松种源间感病性有差别,但没有达到可以利用它们进行病害防治的程度。自然感染的美国七个湿地松种源和十个火炬松种源也都表现高度感病。湿地松,黑松和火炬松是高度感病的树种,短叶松、长叶松和沙松感病中等,马尾松是高度抗病的。在松针褐斑病流行的湿地松幼林中选择了47株抗病优树,用自然感染法对各优树无性系的感病性测定表明,约有1/2的优树无性系是高度抗病的。     

湿地松对松针褐斑病的抗性测定

从松针褐斑病（Ｌｅｃａｎｏｓｔｉｃｔａ ａｃｉｃｏｌａ）重病林分中选出３６个湿地松（Ｐｉｎｕｓ ｅｌｌｉｏｔｔｉｉ）抗病表现型优树无性系，用人工喷洒病菌孢子液接种法对其进行抗病测定，结果表明，有２２个是高度抗病的。与用松针褐斑病产生的毒素粗提液处理上述无性系的离体针叶进行抗病性测定的结果基本一致，相关系数为０．８０。     

松针褐斑病种子传播的研究

<正>对进口湿地松、火炬松种子抽样检验没有发现种子带菌,也未发现其中夹杂有针叶碎片。松针褐斑     

松针水抽提物及其酸度与抗褐斑病的关系

本研究表明，松针褐斑病菌在抗性不同的松针水抽提液中的生长情况显不同。病菌分生孢子在抗病的湿地松，马尾松以及易感的湿地松和黑松的松针水抽滤液中的萌发率分别为３８．７％，４６．１％，５１．９％和５５．２％。菌丝在抗病的松针抽滤液中生长地也远不及在易感松针的抽滤液中好。抗病和易感湿地松针叶的ｐＨ值和缓冲容量几乎完全相同，马尾松和墨松的松针抽滤液的ｐＨ比湿地松略高些，但缓冲容量比抗病和易感湿地松都小，显然     

湿地松种源试验研究

于１９８３年、１９８４年在广西南宁地区林业科学研究所引种美国８个州４７个湿地松（Ｐｉｎｕｓ ｅｌｉｏｔｔｉｉ）种源。以广东台山湿地松种子园、安徽马鞍山火炬松（Ｐｉｎｕｓ ｔａｅｄａ）和本地马尾松（Ｐｉｎｕｓ ｍａｓｓｏｎｉａｎａ）为对照。采用随机区组设计,重复４次或５次,试验表明,湿地松种源间生长差异显著,其生长性状的变异属地理渐变型,其它性状的变异则属随机型。优良种源主要分布在美国路易斯安那州到     

松材线虫对黑松、湿地松幼苗活性氧代谢的影响

以2月龄黑松（Pinus thunbergii)、湿地松（P.elliottii)幼苗为材料，研究松材线虫（Bursaphelenchus xylophilus)感染对松幼苗活性氧代谢的影响。在接种松材线虫后，黑松较湿地松发病快且重，黑松内超氧化物歧化酶（SOD）、过氧化氢酶（CAT）活性逐渐降低；湿地松内SOD和CAT在接种早期活性增加，随后下降。两种幼苗接种后，过氧化物酶（POD）活性、H2O2和丙二醛（MDA）含量不断增加。H2O2和MDA的积累与植株发病速度呈明显正相关。因此，松材线虫病的发生和发展与寄主植物组织的膜脂过氧化作用有关。     

短周期湿地松纸浆材林的优化经营调控研究

研究确定了短周期湿地松纸浆材林的最适立地条件为16指数级以上,最佳主伐年龄为10～12 a,最适经营密度模型为n=23 360.6/d.以荻取最大树干生物量为经营调控目标,采用动态规划法进行短周期湿地松纸浆材林的优化经营调控,并依据调控结果编制了模式林分的生长过程表和优化经营调控表,以期为湿地松纸浆材林的经营管理提供科学的参考依据.