苏南丘陵杉木萌芽更新的效果分析

杉木萌芽更新适于短轮伐作业，在实践中对其利弊尚存在争议，本文根据在苏南丘陵地区的长期试验，对萌芽林与实生林的生长、树干圆满度，树干基部弯曲根系分布与重量和更新费用作了分析比较，得出萌芽林无论在生长和干形上均不比实生林逊色，而投资却仅占实生林1/3，具有投资少，更新可靠，经济效益好的特点，文内还比较了伐桩萌条存留株数对高生长的影响，在去萌定株时以保留两株萌条者高生长最佳。     

木槿（Hibiscus syriacusL.）耐盐变异体的选择

木槿愈伤组织耐盐细胞系是在含ＮａＣｌ的培养基上通过屡代选择产生的，在无盐培养其中进行几代继代培养后的愈伤组织，由其分化的芽以及脱分化增殖的愈伤组织均表现了耐盐性，木槿耐盐细胞由于对ＮａＣｌ的反应比未经选择的细胞积累了更多的Ｎ＾＋，Ｋ＾＋，而且细胞体积较小。     

冷再生基层的应用与质量控制

结合通顺路大修工程冷再生基层的施工工艺,对冷再生基层的应用施工中应注意的问题以及施工过程中的质量控制进行总结并提出建议。     

Neuronal plasticity and regeneration in the olfactory system of mammals: morphological and functional recovery following olfactory bulb deafferentation

The mammalian olfactory system has the unique property in the permanent turnover of the olfactory sensory neurons under normal conditions and following injury. This implies that the topographical map of the epithelium-to-bulb connections generated during ontogenesis has to be maintained despite neuron renewal in order to insure olfactory information processing. One way to investigate this issue has been to disrupt the peripheral connections and analyze how neural connections may be reestablished as well as how animals may perform in olfactory-mediated tasks. This review surveys the main data pertaining to both morphological and functional recoveries taking place in the peripheral olfactory system following olfactory bulb deafferentation. Conclusions from these studies are enlightened by recent data from molecular biology.     

党建“新的伟大工程”浅释——为党的80周年诞辰而作

本文依据党的十五大精神和江泽民关于党的建设的一系列重要指示,对党的建设“新的伟大工程”的战略目标、主要任务、根本问题等的内涵作了初步的阐释。     

Increased demyelination and axonal damage in metallothionein I+II-deficient mice during experimental autoimmune encephalomyelitis

Metallothioneins I+II (MT-I+II) are antioxidant, neuroprotective factors. We previously showed that MT-I+II deficiency during experimental autoimmune encephalomyelitis (EAE) leads to increased disease incidence and clinical symptoms. Moreover, the inflammatory response of macrophages and T cells, oxidative stress, and apoptotic cell death during EAE were increased by MT-I+II deficiency. We now show for the first time that demyelination and axonal damage are significantly increased in MT-I+II deficient mice during EAE. Furthermore, oligodendroglial regeneration, growth cone formation, and tissue repair including expression of trophic factors were significantly reduced in MT-I+II-deficient mice during EAE. Accordingly, MT-I+II have protective and regenerative roles in the brain. Received 31 October 2002; received after revision 23 November 2002; accepted 26 November 2002 RID="*" ID="*"Corresponding author. M. Penkowa and C. Espejo contributed equally to this paper.     

浅析价值管理在工程项目招标投标过程的应用

建设工程项目价值即以最优的资源配置有效地实现建设项目利益相关者的需求。而价值管理在工程项目招标投标过程中的应用则更丰富了实现项目利益的途径。本文就价值管理在工程招投标阶段的应用、价值管理在工程招标评标中应用的基本思路和主要步骤以及通过案例分析,来进一步探讨分析价值管理的应用情况。     

耐盐能源植物海滨锦葵(Kostelezkya virginica)再生体系的建立

对海滨锦葵组织培养再生体系进行了研究，结果表明：1．海滨锦葵茎段外植体较好的愈伤组织诱导培养基组合为MS＋KT1．5mg／L＋IAA2．0mg／L或MS＋6-BA4．0mg／L＋IBA0．2mg／L＋Inositol50mg／L．2．海滨锦葵愈伤诱导不定芽的较好培养基组合为MS＋NAA2．0mg／L＋2iP5．0mg／L和MS＋NAA0．5mg／L＋2iP5．0mg／L．3．海滨锦葵腋芽分化不定芽的较好培养基组合为改良MS（含2倍有机营养）＋KT0．4mg／L＋IAA1．0mg／L．MS基本培养基中适当提高有机营养的含量对腋芽的增殖有促进作用，实验中以有机营养的含量为基本培养基2倍时效果较好．4．不定芽在1／ZMS的培养基中附加IBA1．0mg／L牛根最好．     

建筑工程自动喷水灭火系统施工与使用中存在的问题与改进的建议

自动喷水灭火系统作为一种智能型的灭火工具，已广泛应用到各种类型的建筑工程，为保护人身及财产安全起到了相当重要的作用。指出了近年来在安装有自动喷水灭火系统的建筑工程验收工作中遇到的一些实际问题，对照现行的国家消防技术规范，提出了一些改进的建议。