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Abstract: The phenyl Lithium, 2-methoxy phenyl Lithium and 2,4-dimethoxy phenyl Lithium reacted with the cinnamic acid to produce a corresponding chalcone in 75%, 56%, 50%yield, respectively. 2,6-Dimethoxyphenyl Lithium could not react with cinnamic acid,
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文摘:苯基锂、2-甲氧基苯基锂和2，4-二甲氧苯基锂分别与肉桂酸反应以75％，65％，50％的收率生成相应的查尔酮；2，6-二甲氧基苯基锂与肉桂酸不发生反应，但能与肉桂酸甲酯反应生成2′，6′-二甲氧基查尔酮；类似的还制得了2′，4′，6′-三甲氧基查尔酮和2′，4′，4，6′-四甲氧基查尔酮。 |
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Abstract: The physical new curriculum will implement in nation wide range，This article first introduces the new curriculum standard thecharacteristic, Recombination physics test introduction convention test questiontopic good and bad points，Elaborated the
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摘要：物理新课程将在全国更大范围内实施，本文首先介绍新课程标准的特点，再结合物理考试介绍常规考试试题题型的优缺点，阐述物理试题的编写要体现新课程目标。 |
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Abstract: The physical significances of the reaching law parameters and the qualitative relationships among them in variable structure control(VSC) are analyzed.According to the relationships,a reaching law control method is put forward based on fuzzy rul
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文摘:分析了变结构控制设计方法中趋近律参数的物理意义及参数之间的定性关系，根据这些参数的定性和不精确关系，提出了基于模糊规则的趋近律控制——模糊趋近律控制，即用模糊规则来选择趋近律的参数，以达到改善品质控制的目的.仿真结果表明，笔者给出的方法既保留了传统趋近律方法所具有的较强鲁棒性优点，又使控制系统的品质控制具有较强的自适应性，同时还比传统趋近律方法更有效地削弱变结构控制系统中固有的颤振. |
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Abstract: The physical-chemical proerties of grains and flour and doughrheological properties of four kinds of French commercial wheat were analy zed.The suitability of French wheat flour for Chinese traditional food products such as steamed bread and noo
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文摘:本文主要就4种法国商用小麦的理化特性及其面粉的理化特性和面团的流变学特性等进行较为全面地分析，并初步探索了法国小麦粉在中国传统食品馒头、面条中的应用，旨在为合理利用法国小麦、面粉制作中国传统食品馒头、面条提供一些指导。 |
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Abstract: The physiological specialties of photosynthetic bacteria and its mechanism of organic wastewater treatment were reported.The achievements of recent research at home and abroad for application of PSB in organic wastewater treatment were reviewed.
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文摘:综述了光合细菌独特的生理特性和其处理高浓度有机废水的原理，介绍了近年来国内外利用光合细菌处理有机废水的研究成果，并对光合细菌用于废水生物处理的前景及存在的问题进行了评述。 |
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Abstract: The planning of 2007 Garden Show Park in Xiamen takes full advantage of the exiting conditions and sets up the new landscape forms upon the exiting landscape features of the site.
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摘要:厦门2007年园博园规划方案充分利用了现状条件，使新的景观形式建立在基址原有的地域特征的基础上。 |
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Abstract: The pollen morphology of 5 species of Corydalis from northeast China was observed and compared by SEM.The results declared the shape and size of the pollen and exine sculpture of the 5 species were basically stable and could serve as a taxonomic
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文摘:用扫描电镜对东北延胡索极其近缘植物的花粉形态进行了观察，结果发现花粉粒在形状、大小、外壁纹饰、沟的长短及宽度等方面均有区别，从中获得了东北延胡索及其近缘植物分类方面的孢粉学依据.因此花粉的特征可用于区别延胡索类植物. |
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Abstract: The possibility of applying fractal geometry to pattern design is discussed in this paper,that especially the set of self-similar applying to pattern design.
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文摘:讨论了分形几何在图案设计中应用的可能性,重点讨论了自相似集在图案设计中的应用. |
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Abstract: The pot-experiment shows that the coated-and mixed-fertilizer applied to rice only once can meet the need of rice in its various growth periods and increase the yield of rice.
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文摘:盆栽试验表明，一次性水稻专用涂层复混肥一次性施用能满足水稻各生育期的需要，并能促进养分由稻秆向谷粒的转移，提高成穗率和产量，使用方便，节省劳力，有较好的推广应用前景。 |
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Abstract: The power plant is the key unit of firefighting which is involved in inflammable and explosive materials,high accident rate and great losses.
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文摘:发电厂到处都是易燃易爆物品，火灾事故发生率高，损失大，是防火重点单位。 |
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Abstract: The practice of medical insurance system reform in our country has shown the over-increase of medical cost has become a major block for the sustainable development of medical insurance system.
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我国医疗保险制度改革的实践证明，过快增长的医疗费用已成为医疗保险制度可持续发展的重要制约因素。 |
