中值

The enhanced emission yields of secondary ions induced by Si2 clusters at the low energies are clearly seen and attributed to the vicinage effect of the nuclear collision processes of cluster constituents and the secondary ion emissions are still dominated by electronic stopping processes at high energies.

实验结果显示，在以上的生物样品中，MeV能量离子的能量损失值和TRIM程序模拟的结果相吻合，但是透射离子的能量离散值却与TRIM程序模拟结果有很大的不同。结合生物样品的结构不均匀的特性，对Bohr能量离散理论进行了修正，并发现修正后的Bohr能量离散理论计算结果与实验值符合得很好。

Most foreign scholars believed that T_2 cutoff value of sandstone cores was about 33 ms and domestic scholars generally believed that T_2 cutoff value of domestic sedimentary reservoirs cores was less than 33 ms. In majority study abroad most T_2 cutoff value of carbonatite cores distributed between 90 ms and 100ms, and never saw author relevant reports yet about T_2 cutoff value of vulcanite reservoir cores.

国外研究中砂岩T_2截止值大多在33ms左右而多数碳酸岩岩心集中在90～100ms之间，国内学者普遍以为国内沉积岩储层岩心的T_2截止值要小于33ms，还未见到火山岩油气躲岩心T_2截止值的相关报道。

The grain length, width and 100-grain weight of parents and 110 lines in waterland cultivation of were greater than that in dryland cultivation, and amylose content and chalkiness rate were less than that in dryland cultivation. The comparative study on RVA showed that the greater effect of water stress was observed on the cold plastic viscosity, consumers base value, the restoring value of RVA spectral characteristics and litter on gelatinization temperature, the peak time, the highest viscosity, hot plasma viscosity, disintegrating value.

在旱地种植亲本和各品系的粒长、粒宽和百粒重的均值均小于水田种植，而直链淀粉含量和垩白率均大于水田种植；稻米淀粉黏滞性特征谱中冷胶黏度、消碱值、回复值受土壤水分胁迫影响较大，土壤水分对糊化温度、峰值时间、最高黏度、热浆黏度、崩解值影响较小。

So I begin to be optimized from log content and friendship link since wherefrom day, although my among them the Pr value of a station is 0, but I am afraid not at all, because I have confidence to had been done, of course the resource that I admit it is good to there is a lot of here can be used, say several Pr are worth the station of 5 to become a link with me for example, my friendship links the site that chopped several Pr4, link type make it rich customer site, its purpose purifies link and retrorse link namely, a good data can get in be being updated next time to be worth in Pr namely.

所以从那天起我就开始从日志内容和友情链接上优化，虽然我的其中一个站的pr值是0，但是我一点也不担心，因为我有信心做好，当然我承认我这里有很多好的资源可以利用，比方说好几个pr值5的站都跟我做链接，我的友情链接砍掉了好几个pr4的站点，链接类型都做成了博客站点，其目的就是净化链接和反向链接，就是为了在pr值下次更新中能够得到一个好的数据。

Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows:①reviewed entirely the origin and evolvement of the concept "sustainable development", stated and commented the study status in queue on"sustainable development"around national and international range, thorough discussed the science connotation about the concept "sustainable development";②looked back and commented across-the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings;③expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory;④thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the MATLAB software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the B-J method and Morte-Carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources;⑤synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming, mathematical statistics, random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality;⑥analyzed the inside condition and outside condition to assure the sustainable and optimum exploitation of groundwater resources, the inside conditions are the follows: correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows: the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water-saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology;⑦scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy;⑧point out the more directions on groundwater resources.

它将为制定水资源的可持续发展目标和战略决策提供科学依据，为制定社会、经济可持续发展战略提供理论基础。基于以上考虑，论文主要从以下几方面对地下水资源可持续开发问题进行了比较深入的探讨：①全面回顾了&可持续发展&概念的由来与演变，对国内外&可持续发展&的研究现状进行了述评，并对&可持续发展&概念的科学内涵进行了深入探讨；②对涉及地下水资源的一些最基本的概念和命题进行了全面的回顾和评述，对目前仍然存在的一些错误观点和混乱认识提出了自己的见解；③全面阐述了地下水资源变值系统理论的内容和意义，并与传统的地下水资源计算评价方法进行了对比分析，结合实例具体说明了方法的应用；④深入分析了地下水资源预测预报工作的极端重要性和复杂性，对传统的地下水资源动态预测方法进行了全面的评述，指出了各类预测预报方法的特点及适用条件，对最近二十多年刚发展起来的小波分析技术的主要思想和方法及其应用范围，以及号称第五代计算机语言的MATLAB软件和附带的小波分析工具箱进行了介绍，并应用于地下水动态过程线的分析，采用时间序列中的B-J法，蒙特卡罗方法，与地下水资源变值系统理论相结合，探讨了地下水动态资料分析和地下水资源预测预报的新思路；⑤综合分析了现今各类地下水管理模型的特点及缺陷，将数学规划、数理统计、随机过程等与地下水变值系统理论相结合进行地表水地下水或多水源的联合优化调度，使模型更准确、更实用；⑥对保证地下水资源可持续开发的内部条件和外部条件进行了分析，内部条件主要是正确的资源观，科学的资源计算与评价方法，可靠的资源预测预报技术，可操作的资源管理措施，外部条件主要是高层发展思路、管理体制的变革、配套的政策法规、经济杠杆的调节、人文素质的提高、节水意识的增强及具体节水措施、人口增长的控制、水体污染的防治、生态的恢复和重建等；⑦从宇宙科学、地球系统科学及哲学的高度审视地下水资源的可持续开发；⑧指出了地下水资源可持续开发的进一步研究方向。

Under certain experimental conditions,the Terbiumbasic Calbonate can be dissolved in aqueous solution of nicotinic acid to yield an Orange Tb Complex, which has a broad characteristic absorption band between, 370—410 nm The autoreduction of the Tb—Complex was studied by means of spectrophotometric method, It was determined by experiments that the reaction order is equal to two and the apparent activation energy of the auto—reduction is equal to 68.4±0,8KJ/mol.

在一定条件下，Tb的碱式碳酸盐可以溶解在烟酸的水溶液中形成橙黄色的络合物，该络合物在390nm波长附近有一宽带特征吸收峰。消光值在0。～1.0范围內与Tb的浓度具有直线关系。分光光度法对Tb自还原反应研究确定：于15℃及烟酸浓度为0.35M时，当pH值小于6.0条件下，随pH值的增加，其自还原速度常数减小，该自还原反应级数为二，反应活化能为68.4±0.8KJ/mo1。

There are large niche overlaps between the shrub and semi-shrub species and among the herbaceous plants of which the overlap between H. scoparium and A. ordosica and between Chloris virgata and Bassia dasyphylla were 0.7192 and 0.8622, respectively, and this indicates that they have greater ecological similarity thus possessing strong competitive capacities in community succession; there are smaller niche overlaps between A. ordosica and various herbaceous plants and thus they can stably co-existed.

灌木、半灌木种之间、草本植物与草本植物之间的生态位重迭值较大，其中花棒与油蒿、虎尾草与雾冰藜之间的生态位重迭值分别为0.7192和0.8622，这表明二者之间有较大的生态相似性，从而在演替过程中具有较强的竞争作用；而半灌木油蒿与各草本植物之间的生态位重迭值很小，它们能够实现稳定共存。

There are large niche overlaps between the shrub and semi-shrub species and among the herbaceous plants of which the overlap between H. scoparium and A. ordosica and between Chloris virgata and Bassia dasyphylla were 0.7192 and 0.8622, respectively, and this indicates that they have greater ecological similarity thus possessing strong competitive capacities in community succession; there are smaller niche overlaps between A. ordosica and various herbaceous plants and thus they can stably co-existed.

灌木、半灌木种之间、草本植物与草本植物之间的生态位重叠值较大，其中花棒与油蒿、虎尾草与雾冰藜之间的生态位重叠值分别为0.7192和0.8622，这表明二者之间有较大的生态相似性，从而在演替过程中具有较强的竞争作用；而半灌木油蒿与各草本植物之间的生态位重叠值很小，它们能够实现稳定共存。

Nine sheep with permanent cannular were randomly divided into three groups, and the roughage quality was evaluated by Grading Index of roughage. Three kinds of roughages were used in the trial diets which had the same ratio of roughage to concentrate of 8∶2 to adjust the different roughage qualities. Three qualities of diets included? higher quality roughage (GI=2.89 MJ), middle quality roughage (GI=1.73 MJ) and lower quality roughage (GI=0.65 MJ),?

试验将带有永久瘤胃瘘管的9只绵羊随机分成3组，以粗饲料分级指数GI为指标对粗饲料品质进行划分，在精粗比为2：8条件下配制3种混合日粮，形成含高GI粗饲料日粮组（H组，粗料GI值＝2.89）、含中GI粗饲料日粮组(M组，粗料GI值＝1.73)和含低GI粗饲料日粮组(L组，粗料GI值＝0.65)。

From the influnce of pH change in water on the copolymerization, the copolymerization mechanism was provided. The copolymerization mechanism is that there is hydrogen bond, which can enhance the copolymerization, between acrylic acid and crotonaldehyde at low pH and there is"Charge Transfer Complex", which gives the more crotonaldehyde in P (acrylic acid-crotonaldehyde), between acrylic acid and crotonaldehyde at high pH.

根据共聚合反应介质pH值变化对丙烯酸-丁烯醛共聚合反应的影响，提出了丙烯酸-丁烯醛共聚合反应机理，即在低pH值时，丙烯酸、丁烯醛之间可形成氢键，从而使共聚合体系具有较高的聚合反应速率和转化率；在较高pH值时，丙烯酸、丁烯醛之间则有电荷转移络合物形成，从而使共聚物中含有更多的丁烯醛链段。

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。