变化

In the process of bryophyte community formation, the random process, nature of colonization, and difference in regeneration strategy can result in the niche overlap and coexistence of bryophytes, and the niche differentiation resulted from competition is also one of the mechanisms for bryophytes coexistence.

多种苔藓植物间可存在竞争等级，该等级往往随环境的变化而变化。随机过程、物种的殖民本质以及更新策略的差异可导致苔藓植物生态位的重叠与共存，但竞争导致生态位分化也是苔藓植物共存的机理之一。

This experiment was carried out during 2002~2004 in Shan-dong Agricultural University. The dynamic changes of respiratory metabolism in dormant bud of two nectarine cultivars, Wuyuehuo and Shuguang, which have different Chilling requirements, were studied in the experiment. The soluble sugar, starch, soluble protein and amino acid in flower bud and scale, temperature, regulator, and shading were tested to discuss their effects on the respiratory metabolism.

本试验于2002年10月至2003年12月在山东农业大学进行，以需冷量不同的油桃品种曙光、五月火为试材，测定了不同需冷量品种的油桃花芽冬季休眠期间呼吸代谢的动态变化，以及呼吸基质及蛋白质和氨基酸的动态变化，探讨了呼吸代谢与自然休眠的关系；同时又测定了温度、遮荫、除芽鳞片以及生长调节剂对呼吸代谢的影响效果，探讨了影响油桃休眠的外界因子。

The conventional methods of load balancing always set a load buffer range to decrease the state change frequency of a service server in the geographic distributed load balancing architecture, and mostly assume that servers are homogeneous and just consider single resource consumption, such as CPU load.

过去在地理分散的服务伺服器负载平衡方法上，服务伺服器为了降低状态变化的频率，通常会设定一负载缓冲区间，来降低因服务伺服器状态变化而产生的网路封包，然而却会造成各服务伺服器负载震荡的现象。

The changes of chlorophyll-a were detected in the zoology system of shellfish,fish and bulrush.

通过检测系统内叶绿素a含量的变化，以监测系统中各池贝类规格、数量与叶绿素a的变化关系。

Scan sampling and Focal sampling methods were utilized to determine the behavior mode, daily rhythm and behavior trends of the nestlings of Great Bustard;Each growth indicator were measured to obtain the growing curves and equations;Correlation analysis was taken between the behavior and growth indicators of young Great Bustard to understand the relation between them.

本实验采用扫描取样法和目标取样法相结合观察大鸨雏鸟的行为模式，研究了大鸨雏鸟行为日节律及其行为随日龄增长的强度变化趋势；定期对大鸨雏鸟各生长指标进行测量，总结大鸨雏鸟的生长发育规律，拟合生长曲线和方程；对大鸨雏鸟的行为和生长发育指标进行相关性分析，确定生长指标与行为变化规律之间的关系。

The main object of this research is to investigate synthesis of Cu23Cl Cu and CuO nanoparticles through electrospinning and heat-treated method The research is mainly focused on preparative parameter and the change of heat-treated temperature to form the nanoparticles inlaid in silicon fibers the shape and color change are dicussed First of all to prepare the Polyvinyl butyral and silica dioxide complex nanofiber by electrospinning and then to investigate different heat-treated temperature and reactive time to being an influence on the products The results detected by SEM XRD TEM EDS FTIR combined sol-gel process and electrospinning can prepare Polyvinyl butyral and silica complex nanofiber The experimental result is found when heat-treated temperature is 100~4750C it can produce Cu23Cl nanoparticles; Above 4750C~ 4900C it can produce Cu nanoparticles; Above 450~7000C it can produce CuO nanoparticles And the viscosity is lain between 20~40cp and the sol-gel process time is 3hr it can produce the thinner fibers The average diameter of the fibers are 107 88±21 01nm;Due to the nanoparticles inlaid in the silica fibers the thinner fibers can be inlaid the smaller nanoparticles so this is the result that the experiment is expected To calcine the complex fibers is to produce surface silica fibers contain Cu23Cl Cu and CuO nanoparticles due to surface plasma resonance it make the color of the fibers become yellowish green from light white green turn into the red nuclear finally As the experimental result to utilize sol-gel process combine electrospinning can produce porous silica fibers contain Cu23Cl Cu and CuO nanoparticles

本研究旨在探讨「利用放电纺丝和热处理法来合成Cu23Cl、Cu和CuO奈米粒」之研究，实验著重在制备参数与热处理温度变化对所形成的奈米粒镶嵌在二氧化矽纤维中的形态与颜色变化探讨。首先，利用放电纺丝法制备出聚乙烯醇缩丁醛及二氧化矽之奈米纤维，比较不同的热处理温度与反应时间的改变对产物生成产生影响，进而研究不同热处理温度和时间对生成奈米粒的影响。产物经由SEM、XRD、TEM、EDS和FTIR等仪器分析结果显示，结合溶胶-凝胶法(sol-gel process)和放电纺丝法可产生聚乙烯醇缩丁醛及二氧化矽复合奈米纤维。实验结果发现，若热处理温度在100~4750C下可得到Cu23Cl奈米粒，475~4900C 可得Cu奈米粒，450~7000C以上可得 CuO奈米粒。而黏度介於20~40cp间和溶胶-凝胶时间为3hr时，可产生直径比较细的纤维，纤维直径为107 88±21 01nm；且由於奈米金属颗粒镶嵌在二氧化矽纤维中，直径比较细的纤维，可以得到比较小的奈米金属颗粒，这与实验预期相符。而锻烧此复合物产生多孔的二氧化矽纤维并包含Cu23Cl、Cu和CuO奈米微粒时，由於表面电浆子共震关系，而使纤维颜色由淡白黄绿色变成黄绿色，再变红褐色。由实验结果得知，利用溶胶-凝胶法(sol-gel process)结合放电纺丝法和不同热处理温度，可产生Cu23Cl、Cu和CuO奈米粒镶嵌在二氧化矽纤维。

13C of organic matter in pedogenic calcrete is widely used in the reconstruction of the past ecological environment.

土壤钙结岩中有机质的δ13C被广泛地应用于重建过去的生态环境；土壤碳酸盐包含的C、O稳定同位素组成能够指示土壤形成的气候，同时也是研究植被演替、古气候变化、水文条件变化的重要手段。

The work principle of differential transformer was introduced in the paper, and the influence of power supply frequency on output characteristic of differential transformer was analyzed in theory calculating the equivalent circuit under the ideal state, and the experiment was done.

引言差动变压器式传感器是根据变压器的基本原理，把被测的非电量变化转换为线圈互感变化的传感器。在非电量测量中，应用最多的是三节式螺线管差动变压器。

Optimal control theory is a generalization of the calculus of variations.

变分法寻求优化的目标界定了许多时间点，考虑如何目标函数的变化，如果有一个小变化，选择的道路。

The resultsshowed that CAs and CaMAs could both enhance the intracellularDoxorubcine level and decrease the membrane P-Gp expression of K562/VCRcells,indicating there existed significant difference with the control group(P＜0.01).And the changes of the intracellular Doxorubcine concentrationinduced with CAs and CaMAs had positive dose-responses relationship withCAs and CaMAs concentration in K562/VCR cells(P＜0.01),while thechanges of membrane P-Gp expression had no dose-responses relationshipwith CAs and CaMAs concentration in K562/VCR cells.

结果表明：CAs或CaMAs既能提高K562/VCR细胞内Dox的浓度，又能降低K562/VCR细胞膜P-Gp的表达，与对照组相比，存在着明显差异（P＜0.01）；CAs和CaMAs各浓度间引起的K562/VCR细胞内Dox浓度的变化也存在着明显的差异（P＜0.01），呈正的量效关系；但CAs和CaMAs各浓度间引起的P-Gp表达的变化无明显差异。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。