Because the techniques of the biochemical waste treatment are very important, the techniques of the cultivation of the microorganism have received more attention in recent years. A study is conducted to analyze the steady states and dynamic bechavior of the reactions of the cell-substrate and the prey-predator interaction in two chemostats in series. For the reaction of cell-substrate in two chemostats in series, if the specific growth rate of the Monod model is used for the cell , there are three types of steady states for this reaction system. These three types of steady states and stability are analyzed in detail. The dynamic behavior of this reaction system is analyzed by the numerical method and computer graphs. The results show that the dynamic behavior of this system consists of stable steady states.

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On the basis of the metioned above, in the mass, the thesis amalyzes the ecological problems that Wuzhong has and the reasons that result then in , ecological construction acheivments and it"s consumable affecs ;then in detail and using the way combined fix quatity with quality , analyzes the condition, degree, mechanism, processof ecological caustic of various regions and kinds of ecological systems in Wuzzhong, juging the feasibility of restore and reconstruction of them. The paper indicates, as a whole ,the degree of eological caustic of the region is relative severity, but the diffefences between the plain region and the mountains region are very obvious, and all of them can be retored and rconstructed, wich has been proved by theory and practices. According to the conclutions and combining them with the mature theory ecological fumction dividings and the condition of Wuzhong"s mature and society , the study divides the region into seven ecological functional areas. On basis of the ecological construction strategic targets presented by the governments of the country and Ningxia,Wuzhong and the caustic condions of different ecological system in defferent areas, the author design the models of ecological restoration and reconstruction for the different ecological areas and how to use them.

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In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文題名聚合物異型材口模擠出三維流動(dòng)研究副題名外文題名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 論文作者涂志剛導(dǎo)師柳和生包忠詡教授學(xué)科專業(yè)材料加工工程研究領(lǐng)域\研究方向?qū)W位級(jí)別博士學(xué)位授予單位南昌大學(xué)學(xué)位授予日期2001 論文頁(yè)碼總數(shù)148頁(yè)關(guān)鍵詞擠出成型聚合物材料擠出口模聚合物異型材館藏號(hào)BSLW /2003 /TQ320 /9 本文建立了求解擠出口模內(nèi)冪律流體流動(dòng)速度場(chǎng)的通用三維罰有限元模型国产线观看A片免费看一及；對(duì)于非線性粘彈性的Phan Thien-Tanner流體，為了降低模擬計(jì)算對(duì)計(jì)算機(jī)硬件的要求国产91免费资源在线观看手机，并使模擬計(jì)算更加穩(wěn)定亚洲精品一二三区，采用了一種去耦算法，包括罰有限元方法影音先锋影院精品资源站、擬體力方法和動(dòng)量方程的橢圓類(lèi)方程轉(zhuǎn)化方法肏屄毛片免费看，并建立了求解速度場(chǎng)和粘彈性應(yīng)力場(chǎng)的總體有限元方程；對(duì)于PTT流體的擠出脹大問(wèn)題黄色网站三级片要爱网，提出了擠出脹大熔體口模內(nèi)外分離模擬法性爱一级高清无码视频，這樣可以顯著降低數(shù)值模擬對(duì)計(jì)算機(jī)硬件的要求。

Through analysis, the thesis thinks that the economical nature of environment goods cannot be generalized by public goods or private goods, its nature has been changing between the two extremes. The environment goods is on one hand reflected in some legal arrangement in international environment statute, where the focus is the whole humankind, for example,"common heritage"; on the other hand, it is also reflected in the rules that protecting private rights in civil legal system, where the focus is the individual, for example,"the right of environment personality ". The essential part of environment justice is the social distribution of environment benefits and burdens, so the thesis centers on the social peculiarities of environment goods as social burdens and as social benefits. In detail, environment benefits are related both to property and to personality, and they are also un-produced, non-substitutive and prima goods as living resources; environment burdens are composed of LULUs and many uncertain and irreversible environment risks.

通過(guò)分析免费黄色黄色，本文認(rèn)為環(huán)境物品的經(jīng)濟(jì)性質(zhì)不能單純地用公共物品或私人物品進(jìn)行概括k8经典网性饥渴少妇，其性質(zhì)在此兩極之間會(huì)發(fā)生變動(dòng)；而法律構(gòu)造中的環(huán)境物品一方面體現(xiàn)在國(guó)際環(huán)境法中的主要以&類(lèi)&為主體的各種制度安排中国产色字幕手机在线，例如&人類(lèi)共同遺產(chǎn)&久久视屏性爱AV，另一方面則體現(xiàn)在民法體系中以&個(gè)人&為主體的各種私權(quán)保護(hù)的規(guī)則中，如環(huán)境人格權(quán)等国产偷情在线；接下來(lái)性交黄色视频，鑒于環(huán)境正義的核心是環(huán)境利益與負(fù)擔(dān)的社會(huì)分配，所以本文重點(diǎn)探討了作為一種利益和作為一種負(fù)擔(dān)存在的環(huán)境物品的各種獨(dú)特的社會(huì)屬性日韩美女福利禁止观看网站视频免费，具體而言日韩福利微拍在线播放视频网站大全，環(huán)境利益具有財(cái)產(chǎn)屬性、人格屬性国产一级迷奸黄片视频大全、非制造性淫淫黄色一片、不可替代性以及作為生存資源的前提性欧美高清国产在线有码；而環(huán)境負(fù)擔(dān)則具體包括&不可欲的局域性土地利用方式&和具有科學(xué)不確定性和不可逆性的環(huán)境風(fēng)險(xiǎn)。

The purpose of this paper is two-fold: first, to examine in detail the distribution of the verb ciah^8 in this Taiwanese Southern Min dialect, in order to understand how polysemies materialize in actual language use through the operation of metonymies and metaphors, and second, to make a thorough investigation of the issues relating to the diachronic changes, developmental patterns, and the idiomatic usage of the word in question.

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In this paper, as a typical lewis acid, anhydrous aluminum (AlCl_3) was used as the catalyst to get PP/PS blends compatibilized by in-situ Fridel-Crafts alkylation. The effects on PP and PS components of AlCl_3 were investigated first, mainly by rheology, including steady rheology method and dynamic rheology method. Then the in-situ reactions in PP/PS alloys under different conditions were executed and studied in detail by selective Soxhlet solvent extraction. And at the same time, the evolutions of phase structures of PP/PS and the resulted PP/PS/AlCl_3 alloys were investigated by SEM and SALS. The steady and dynamic rheological behaviors of in-situ compatibilized PP/PS alloys were obtained systematically.

本文選用典型路易斯酸無(wú)水氯化鋁(AlCl_3)作為催化劑，利用烷基化反應(yīng)機(jī)理又粗又长又刺激黄色网站，對(duì)PP/PS合金直接進(jìn)行原位催化反應(yīng)增容AAAA一,黄片，以流變學(xué)方法(包括靜態(tài)流變和動(dòng)態(tài)流變學(xué)方法)為主，詳細(xì)探討無(wú)水AlCl_3對(duì)PP/PS合金體系中PP和PS兩組分的影響婷婷五月天开心激情网，并在此基礎(chǔ)上進(jìn)一步系統(tǒng)研究無(wú)水AlCl_3原位催化增容PP/PS合金的相結(jié)構(gòu)演變及增容反應(yīng)特征中国一级大黄片强奸与乱伦，然后對(duì)不同原位催化增容條件下獲得增容合金材料的流變行為特征作了深入探討。

This paper attempts to study those typical texts in detail,on the basis of the in-depth analysis of the narrative art and techniques of the 1940's narrative poems,mainly from four aspects:the lyric narration,imagery narration, dramatic narration,"moledicized" narration,so as to explore and appraise their historical contribution,values,functions and limitations in the modem poem history.In the narrative poems in the 1940s,the technique of"lyric narration" is embodied mainly in the high degree of artistic integration of "felling" and "polt".The lyricism is fully embodied in both structure and language,and generally through two ways:the lyricism of the dramatis personae and the lyricism of relaters or poet himselfThe narrative poets in 1940s have further developed the "mood" type of narrative poems(a kind of structure model of the modem narrative poem)which was created by predecessors.

本文試圖在對(duì)有代表性的文本進(jìn)行細(xì)致研讀的基礎(chǔ)上五月丁香人人插，對(duì)40年代敘事長(zhǎng)詩(shī)的敘事藝術(shù)與策略進(jìn)行深入剖析98欧美精品系列一区二区，主要從抒情化敘事、意象化敘事乱婬网站、戲劇化敘事日韩欧美性较高清视频免费看、謠曲化敘事四個(gè)層面展開(kāi)，以發(fā)掘超碰97人人摸人人操人人看、評(píng)判其在現(xiàn)代詩(shī)歌史上的歷史貢獻(xiàn)毛片免费新网站、價(jià)值、功能及局限等免费在线黄色性爱视频。40年代敘事長(zhǎng)詩(shī)中的&抒情化敘事&策略主要體現(xiàn)于&情&與&事&的高度藝術(shù)融合在线免费看a片，抒情形態(tài)表現(xiàn)在抒情結(jié)構(gòu)與抒情語(yǔ)言方面；其抒情策略大體有兩種方式：一是詩(shī)中人物的自我抒情少妇被黑人4p到惨叫欧美人，一是詩(shī)人自己或敘述人的抒情亚洲无码精选。40年代敘事詩(shī)人進(jìn)一步發(fā)展了前人創(chuàng)造的&情緒型&敘事詩(shī)這種現(xiàn)代敘事詩(shī)的結(jié)構(gòu)模式色色色色色综合视频。

The main work of this paper: Firstly, Basing on the summarization and analysis of the walking mechanism, Parallel drive five-bar mechanism is applied for walking mechanism. And then the characteristic of the trail and positive kinematics as well as reverse kinematics are discussed. Secondly, the model of walking mechanism is established according to Parallel drive five-bar mechanism, and then a figure planning is designed for the foot-end trail. The characteristics of the parallel drive are emphasized to research in this paragraph by the method of insert value. At last, the simulation is performed in the ADAMS to compare the real result to the theoretical value. Thirdly, a sealed structure of a Quadruped Walking Robot is designed and established. The whole control system, including motor, sensor and control circuit, is sealed in the robot. Walking is derived in the way of the shaft driving and the dynamic torque sensor is used to the surrounding conditions of the robot's foot-end to be the foundation of the robot's control. At last, the applying principle of the dynamic torque sensor is researched in detail basing on the traditional sensor of the walking robot. Moreover, the principle is divided into several sorts to discuss. Finally, simulation and verification of the monitor principle are come through in the Mechanism of the Pro/Engineer.

論文的主要工作有：在對(duì)傳統(tǒng)步行機(jī)構(gòu)總結(jié)分析的基礎(chǔ)上5566在线视频，提出將平面并聯(lián)五桿機(jī)構(gòu)應(yīng)用于四足步行機(jī)器人的腿部結(jié)構(gòu)，并對(duì)其軌跡特性免费观看黄色视频的网址、正運(yùn)動(dòng)學(xué)永久黄色视频、逆運(yùn)動(dòng)學(xué)特性做了詳細(xì)計(jì)算分析；依據(jù)平面并聯(lián)五桿機(jī)構(gòu)的模型www.中文字幕在线播放，建立機(jī)器人步行機(jī)構(gòu)的實(shí)體模型国产在线黄色小，對(duì)其足端的軌跡做了圖譜規(guī)劃，并利用插值法對(duì)并聯(lián)驅(qū)動(dòng)端的特性曲線作了研究一级香蕉黄片，并在ADAMS中進(jìn)行仿真欧美性多多，將結(jié)果與理論值相比較扒开双腿疯狂进出爽爽爽网站；然后設(shè)計(jì)了一套四足步行機(jī)器人密封裝配結(jié)構(gòu)設(shè)計(jì)方案，建立四足步行機(jī)器人單足結(jié)構(gòu)性xxxx淫乱、驅(qū)動(dòng)以及傳感器監(jiān)測(cè)的三維實(shí)體模型人人操人人湿人人干，將機(jī)器人的整個(gè)控制系統(tǒng)，密封裝配在步行機(jī)器人的機(jī)體中日韩色情精品一区-AV，通過(guò)軸傳動(dòng)來(lái)驅(qū)動(dòng)步行機(jī)構(gòu)實(shí)現(xiàn)步行欧美一级在线观看欧美大片，采用動(dòng)態(tài)扭矩傳感器監(jiān)測(cè)步行機(jī)構(gòu)的驅(qū)動(dòng)關(guān)節(jié)受到的扭矩變化，從而獲得四足步行機(jī)器人足端的周?chē)闆r一级A片无码性区，為步行機(jī)器人的控制方案奠定了基礎(chǔ)jjzz中国jjzz；論文的最后在分析步行機(jī)器人傳統(tǒng)控制傳感器的基礎(chǔ)上，詳細(xì)分析了動(dòng)態(tài)扭矩傳感器的監(jiān)測(cè)原理人人操人人摞，并分幾種情況分別分析了其監(jiān)測(cè)原理国产91九色，并在Pro/E的Mechanism模塊中實(shí)現(xiàn)了監(jiān)測(cè)原理的仿真與驗(yàn)證，最后給出了傳感器監(jiān)測(cè)信息與系統(tǒng)判斷之間的關(guān)系iGAO激情在。

In order to describe in detail the structure of mesoscale atmosphere circulation and its evolution, symmetry theory are extensively used in the past fifty years. A large number of wind tunnel and water tank experiments are practiced to reshow the physical process that often appear in the atmosphere and, to some extent, successfully explain many atmsophere circulation characters in surface layer. But because of the planetary reflection and small Re number deformation, these physical experiments can' t represent real conditions of the atmosphere, they also can' t distinct viscous boundary layer separation and non-viscous dynamical separation as well as show the circulation response to surface diurnal heating.

為了詳細(xì)描述復(fù)雜地形區(qū)域大氣中尺度環(huán)流的結(jié)構(gòu)和特征一区二区亚洲黄色网站，過(guò)去50年來(lái)人們廣泛采用相似理論，利用風(fēng)洞和水槽實(shí)驗(yàn)再現(xiàn)大氣中的物理過(guò)程欧美三级黄片视频，并在一定程度上成功地給出了大氣近地層的一些環(huán)流特征中国农村第一黄片视频，然而由于邊界層反射和小Re數(shù)形變作用的影響，物理實(shí)驗(yàn)的結(jié)果并不能真實(shí)地再現(xiàn)大氣中的實(shí)際狀況成年片精品视频网站在线观看网址大全，尤其是不能正確區(qū)別邊界粘性分離流場(chǎng)和大氣非粘性動(dòng)力分離氣流热久久中文字幕少妇，環(huán)流場(chǎng)對(duì)地形下墊面日周期熱強(qiáng)迫的響應(yīng)過(guò)程也難以再現(xiàn)。

The thesis analyzes from various aspects the modernist loneliness embodied in her work, including first the definition of modernist loneliness, stating the difference of modernist loneliness from the traditional loneliness and delineating the connotation, the causes, the solution and the extent of modernist loneliness, which changes dramatically in modern society. Then the thesis analyzes in detail how McCullers'two novels present in their own manners the typical modernist loneliness, with a comparison of the common features in both novels, aiming at reaching a deeper understanding of the similar thematic concern of both novels. Another significant part of the thesis is the deep-going analysis of the reasons for modern loneliness in McCullers'works.

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