BACKGROUND: Chitosan and its derivant are environmental-friend natural macromolecular materials, characterizing by great flocculation and adsorption capacities caused by electrophilic group including amino and hydroxyl groups, as well as its long-chain molecular structure. So chitosan is widely used as flocculants in domains of sewage disposal, food refining as well as Chinese medicine purification.

背景：殼聚糖及其衍生物是環(huán)境友好的天然高分子材料国产高清一级黄色网站，其分子中豐富的帶電基團(tuán)如氨基、羥基以及長鏈分子結(jié)構(gòu)賦予其優(yōu)良的絮凝吸附能力黄色视频hs，被作為絮凝劑廣泛用于工業(yè)用水男女性爱一级生活黄色视频中文字幕国语、食品精制以及中藥液純化等領(lǐng)域。

In order to explore the mechanisms of auxin action and metabolism, as well as the changing characteristics of its relative enzymes, IAA content in strawberry fruits with different treatments was determined by HPLC. Content of IAA and the activity of IAO and POD in fruits treated by NPA or TIBA, the inhibitor of auxin transport, were analyzed to investigate the changing characteristics and possible source of auxin, as well as the relation among IAA, POD and IAO. Results were showed as the followings: there had a certain count of IAA in receptacles and achenes, and IAA content in achenes was higher than that in receptacles.

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The products of the project integrates first-class electronic devices of PHILIS ,ARM,IR,INFINEON , real-time operating system of embedded as well as high-reliability uC/OS-Ⅱ,CAN BUS and LIN BUS as a whole system . Through modular and standardized design, it reaches the international standards in the thermal radiation,over-current protection ,quakeproof, moisture-proof and interference prevention. Furthermore, the implementation of modular design in the software design as well as the independence among the modules leads to the perfect combination of hardware and software which certify for the high-performance smart power management and control system that achieve great breakthrough in power management of the vehicles.

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Problems such as imbalances in economic and social development between urban and rural areas as well as across different regions, the extensive pattern in economic development, demographic, resource and environmental strains as well as problems beleaguering employment, social security and income distribution remain to tackle.

城鄉(xiāng)之間天天干天天碰小视频免费观看、地區(qū)之間、經(jīng)濟(jì)與社會發(fā)展之間還不平衡欧美日韩精品码免费专区、不協(xié)調(diào)亚洲欧洲中文字幕视频在线观看，經(jīng)濟(jì)發(fā)展方式粗放，人口精品一区二区三区无码视频、資源99久强奸久久9毛片、環(huán)境壓力大，勞動就業(yè)免费色色色色、社會保障另类日韩高清精品视频在线观看免费、收入分配等方面問題仍然較多。

Synthetically considering these characteristics, the method of freeway management and control are presented according to four aspects: system objective orientation and concept design, system demand and requirement analysis, system data management and network structure, traffic control and accident detecting theory as well as its application. Function and structure of system are delimitated from the point view of integration. Construction and function demand of subsystem are analyzed and basic implement projects are presented. In this thesis, system data flow and management method and target which based on system network topology structure and equipment demand are described. Traffic modeling ideology and the process of making dynamic model as well as accident detecting program are presented with centralized and distributed traffic control theory in detail, then freeway ramp control theory which based on predictive model and its theoretic pattern are explored. Finally, based on the object oriented programming, program of accident detecting and checking on freeway is developed by using visual C++ as tool.

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At first, setting up the arith relation between the signal input and the signal output of the generalized multi-carrier system of the Discrete Fourier Test spread-spectrum; then setting equilibria parameters of the frequency field equilibria subcarrier of the generalized multi-carrier system of the DFT spread-spectrum according to channel frequency response, channel noise variance and equilibria method; then calculating average power of useful signal, interferential average power between signals as well as noise variance of the generalized multi-carrier system receiving terminal of the DFT spread-spectrum according to the arith relation as well as the frequency field equilibria parameter, and recomputing available signal information noise ratio, so as to calculate the available signal information noise ratio of the generalized multi-carrier transmission system accurately, the method for estimating the available signal information noise ratio can be used for link self-adapting transmission solution of the generalized multi-carrier system based on Discrete Fourier Test spread-spectrum and radio material management.

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Temperature, doping and electric field dependent parameters including energy band, impurity and carrier distribution, mobility and PN junction, etc are established The models which is demanded in unification and accordance in accurance, simulation speed, effective range and application efficiency are also obtained 3欧美乱伦视频、Some unique or key low temperature physic effects, such as carrier freeze-out or trapping effect, mobility enhancement effect, steepened subthreshold effect, small dimension effect and heavy injection effect, as well as their influence to the device cryogenic performance are discussed and analyzed Based on the completely understanding of the physic nature and characteristics in low temperatures operation, the technique methods to overcome or to utilize the effects are also presented 4、By systematic analysis of carrier transportation, the device physic analytical model for advanced polysilicon emitter transistor with better cryogenic performance that can be used to simulate the quantity relations between device terminal characteristics and internal structure, doping distribution as well as operation conditions is presented.

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In this dissertation, first, based on theory of cutting tooth about the gleason spiral bevel gear, the equation of meshing in the process of cutting tooth, the surface equation of generating gear as well as the general tooth surface equation of the double circular arc spiral bevel gear, using GB12759-1991 type of double circular arc gear as a basic gear profile, a three-dimension solid model of double circular arc spiral bevel gear which has the good adaptability was carried out by used of Unigraphics software;Second, by researching of the algorithm about contact and collision as well as various contact types based upon Contacting Finite Element Method, a foundation was laid for selecting the contact type in analyzing contact stress of double circular arc spiral bevel gearing;Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.

本文首先基于格利森弧齒錐齒輪加工原理及切齒嚙合過程中的嚙合方程、產(chǎn)形輪齒面方程以及雙圓弧弧齒錐齒輪的齒面方程欧美性爱爆操，選用GB12759-1991型雙圓弧齒輪基本齒廓為基準(zhǔn)齒形老熟妇嗷嗷叫91九色，利用Unigraphics軟件的建模功能，繪制了有較好適應(yīng)性的雙圓弧弧齒錐齒輪傳動三維實體模型欧美毛多,另类在线。其次A片性爱网，描述了應(yīng)用有限單元法進(jìn)行實體接觸與碰撞問題算法的公式，研究了有限元分析中的各種接觸類型以及雙圓弧弧齒錐齒輪接觸應(yīng)力分析中所選擇接觸類型的依據(jù)一级黄色,平台。最后一级A片黑丝，通過UG軟件和ANSYS/LS-DYNA之間的PARASOLID接口工具包，將UG軟件中得到的嚙合齒輪模型導(dǎo)入ANSYS/LS-DYNA有限元分析軟件性欧美老妇60欧美中老年人性，給出一種新的加載方法www.日本黄色网站在线看，進(jìn)行了雙圓弧弧齒錐齒輪傳動的接觸應(yīng)力的有限元分析。