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In this paper, the outline of Jiangxi provision transport and vendition, also its routes, will be showed according to different paths using historical method, and the output amount of provision will be rees...

本文在前人研究的基础上,运用历史学方法,对清代江西粮食运销的概况进行分析:首先,按路线的不同将江西粮食运销路线及其途径呈现出来;其次,根据已有的资料,运用新的方法对江西粮食的外运量重新作一估算;再次,将运用《清实录》的大量资料,着重探讨清政府在粮食运销过程中的作用及影响,并认为清政府的行为在某种程度上促进了清代粮食市场的整合;最后,江西粮食外销对本省的社会和经济产生了深远的影响,在一定程度上促成了江西以粮食作物为主的经济结构的形成,限制了江西商业化的发展。

Seven major methods and their reaction characteristics for the synthesis of primary vicinal diamines starting from epoxides, and alkenes etc.

详细综述了从环氧化合物、烯烃等为起始原料合成一系列一级邻二胺的七条主要路线,并比较了各条反应路线的特点。

Design the Route Fitting Program based on Cubic Spline and, output viewdata, interface with AUTOCAD program, built up vary layers with different color, directly plot the fig of route ichnography, slope and curvature.

运用VB设计开发基于三次样条曲线的路线拟合小程序,可视化输出上述数据结果,并与AUTOCAD程序接口,建立不同的图层及颜色,直接输出路线平面图、斜率图、曲率图。

In this paper, the synthesis ways and applications of 4,5-dimethyl-l,3-dioxolen -2-one were introduced. An appropriate way synthesizing DMDO from acetoin via acylation, cyclization and dehydrochlorination was selected. The influences of various process conditions on the reaction were studied in detail, and the optimum process conditions were obtained by single factor experiments.

本文介绍了医药中间体4,5-二甲基-1,3-二氧杂环戊烯-2-酮的应用情况和合成路线,选择了适于工业化生产的工艺路线,即采用羟基丁酮为原料,经酰化、环合和脱氯化氢等步骤合成DMDO,并采用单因素试验法详细研究了各项工艺条件对反应结果的影响规律,确定了优化工艺条件。

chelating fiber with amidoxime group, synthesis, structure, property

第二种合成路线得到的偕胺肟基纤维氰基转化率可到100%,但合成路线要经过引发剂引发、丙烯腈单体接枝两步之后,才能进行偕胺肟化。

The core of the whole principle system of ancient Greek philosophy is to probe into the arche of all things,around which one route is opened from material aspect,the other,from non-material aspect or a aspect regarded as form.

古希腊自然哲学为近代科学的产生奠定了哲学基础,其整个原理体系以探讨万物的本原为核心,一条路线从物质性方面展开;另一条路线从非物质性即形式方面展开。

Based on broad information collection, author compared and studied on the old synthesis process, and proposed the better process that started from benzyl chloride, then according to the sequence of " synthesis of benzylamine, synthesis of N-benzyl-N--acetamine, synthesis of 2-chloro-5-methylpridine ,2-chloro-5-trichloromethylpyridine,2-chloro-5-trifluropyridine " five steps to get the final product, CTFP.

本文在查阅大量文献资料和对2-氯-5-三氟甲基吡啶合成路线进行分析比较的基础上,提出了较佳合成路线,即以氯化苄为原料,合成的反应步骤为&苄胺&合成、&N-苄基-N--乙酰胺&合成、&2-氯-5-甲基吡啶&合成、&2-氯-5-三氯甲基吡啶&合成、&2-氯-5-三氟甲基吡啶&合成五步。

In this paper we reported a new route, which has solved the known problems of other routes commendably. This route mainly consist five parts.

本文采用了一种新的合成路线来合成七氟醚,很好的解决了以往合成路线存在的一系列问题。

Results Among the 200 elder people,the incidence of sleep disorders and dysmnesia were 26.5% and 88.5%.

结果200例老年人中睡眠障碍发生率35.5%,记忆障碍发生率88.5%,睡眠障碍与记忆障碍呈相关,在图片再认、回忆路线、定向、回忆故事、回忆路线及总标准分等存在差异(P.05或P.01),有统计学意义。

If there is a ioss of electrionic power,emergency track lights installed near the floor will illuminate.When lights lead to red light,which indicates the exit.

如电源失效,安装在地板上的应急路线标示灯将发出亮光,白色为撤离路线灯,红色为出口灯。

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This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。