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幼师的俺善于创作。。。
没有问题的，，，，全套的，
Study on Adsorption of Heavy Metals by Suspended Sediment of Juma River 拒马河悬浮沉积物对重金属的吸附—解吸研究 Effect of Cd-Pb pollution on cole growth behavior and its accumulation effect of heavy metals in soil 土壤镉、铅污染对油菜生长行为及重金属累积效应的影响 Study on the Adsorption of Heavy Metals Ion onto Vermiculite 蛭石对重金属离子吸附作用的研究 A Perliminary Study on Concentrating Heavy Metals By Sabina Chinensis Seadlings 桧柏富集重金属研究初报 Iron presents in abundance as variety of Fe(III) oxides in Fe 在地壳中含量丰富,通常以各种Fe(III)氧化物的形式存在。 Chemical behavior of heavy metals in rhizosphere——Ⅱ The rhizosphere effect of desorption of adsorbed Cu in 重金属在根际中的化学行为——Ⅱ土壤中吸附态铜解吸的根际效应 STUDY OF POLYSILOXANE WITH AMINO ACID SIDE CHAIN SUPPORTED CATALYSTS Ⅲ THE SYNTHESIS, HYDROGENATION ACTIVITY AND XPS STUDY OF POLY-γ-(L-SERINE)PROPYLSILOXANE PALLADIUM CATALYSTS 含氨基酸侧链的有机硅高分子催化剂——Ⅲ聚γ—(丝氨酸基)丙基硅氧烷钯催化剂的合成、加氢活性及XPS研究 A Study of Monitoring Heavy Metals and SO_2 in Air Using Moss-bags as Bio-monitors 苔袋法监测大气重金属和SO_2污染 STUDY ON HIGH EFFICIENT REMOVAL METHOD OF COD_(cr) IN DIPDYE OUTLET WATER 印染废水COD_(cr)高效去除法的研究 The absorptive capacity of soil to heavy metals and its pollution levels were in the following orders:Cd>Pb>Cr>Cu>As>Zn>Ni>Mn>F 土壤对重金属元素的吸附及污染程度 :Cd >Pb >Cr >Cu >As>Zn >Ni>Mn >Fe。
有机化学英语论文Abstract In this work the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol Textural parameters of four kinds of polymeric resins namely AB-8 D4006 NKA-II and D16 resin were separately measuredby ASAP The surface chemistry of these polymeric resins was determined by means of inverse gaschromatography (IGC) and diffusereflectance infrared Fourier transform spectroscopy (DRIFTS) Static equilibrium adsorption experiments were carried out to obtain theisotherms of phenol on the polymeric It was shown that NKA-II and AB-8 resin possessed relatively high BET surface areas andmicropore volumes while D4006 and D16 resin possessed comparatively low BET surface areas and micropore The results of IGCexperiments revealed that NKA-II resin had extraordinary high specific component of the free energy of adsorption both for polar acetone andbenzene probe and thus extraordinary strong surface polarity compared to the other polymeric It was also found that the isotherm ofphenol on NKA-II was much higher than that on the other polymeric resins due to its strongest surface polarity and largest micropore volumeamong four kinds of These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric 2004 Elsevier BV All rights Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography
高效的重金属去除聚合物纳米保湿由铁(3):行为和XPS研究氧化物 文摘:本研究开发了一种聚合物混合吸着剂(HFO-001)为高效的重金属去除(如铅(2)、Cd、铜(II),(2)]不可逆转的浸渍水合氧化(铁(III)在cation-exchange HFO)粒子(R-SO3Na D-001树脂),这种现象的潜在机制的基础上揭示x射线光电子能谱(XPS)的研究。HFO-001结合了出色的处理,和摩擦阻力流量特性,传统的cation-exchange树脂与特定的关系入手,对重金属HFOs阳离子。D-001相比,吸附选择性的HFO-001对铅(II)、铜(二)、(2)Cd大大提高从Ca(II)中更大的浓度。结果表明,柱吸附能力的工作是4-6 HFO-001 D-001倍以上三方面的重金属去除从模拟电镀水(pH ~ 0)。同样,HFO-001尤为有效杀灭多种微量铅(II)和Cd(2)从模拟自然水域达到饮用水标准,以治疗量高于D-001数量级。性能优越的HFO-001归因于Donnan膜效应所举办D-001以及纳米粒子交互作用的特殊HFO浸渍对重金属阳离子作为进一步证实,由XPS研究吸附铅。更有吸引力,疲惫的HFO-001串珠可以有效地解决由HCl-NaCl再生(pH值(3),没有任何有意义的能力的重复使用的损失。 1。简介:重金属注入受纳水体环境问题仍然是重要的,现在正在日益规范作为新的法规限制金属废水推进亿欧元(合ppb),甚至更低(美国EPA,2004年的水平,中国2008年美国环保署)。在现有技术、碱性降水重金属去除历来是首选的技术会议,(ppm)管理水平为微量铅(如第(二)、(二)、Cd等。]在direct-discharge废水点源,然而,这技术通常是限于≥污水浓度百万分之一的有限溶解无定形的金属氢氧化物阶段和效率低下的商业固液分离装置(代尔等,1998年,2003年)。离子交换树脂,利用strong-acid cation-exchange是另一个高效的技术,为有效去除工业废水中重金属的(Dabrowski等,2004,康等,2004;Kurniawan等,2006)或污染地下水(Vilensky等,2002;Dabrowski等,2004年)。然而,一个简单的交换过程中只被静电相互和非特异性为重金属去除(Demirbas等,2005;Carmona等,2008年)。
前言 Chapter 1 Fundamentals of Electric Circuits Section 1 Current and Voltage 专业英语概述 Exercises Section 2 Circuit Elements 翻译标准 Exercises Section 3 Ohm’S Law 翻译过程 Exercises Section 4 Kirchhoffs Laws 专业英语的语法特点 Exercises Section 5 Basic Analysis Methods 专业英语的词汇特点I Exeroses Section 6 Sinusoidal AC Circuit Analysis and ThreePhase circuits 专业英语的词汇特点Ⅱ Exercises Chapter 2 Electronics Section 1 Introduction 专业英语的词汇特点Ⅲ Exercises Section 2 Boolean Algebra for Digital Systems 词义的确定——词义选择 Exercises Section 3 Analog——Digital Conversion 词义的确定—词义的引申 Exercises Section 4 Operational Amplifiers 长句的翻译 Exercises Chapter 3 Power Eleccronic TecllnoIogy Section 1 SernJicon,dLuctor Switclaes 词类的转换（一） Exercises Section 2 The DC—DC Converters 词类的转换（二） E,xercises Section 3 DC—AC Converters 词类的转换（三） Exercises Chapler 4 Electric Machinery Section 1 Principle Of operaltion Of an InductiVe machine 用词的增省（一） Exercises Section 2 Perf0ITflance aaaracteristics Of Induction Motors 用词的增省（二） Exercises Section 3 SyncIlrollous machines 用词的增省（三） Exercises Section 4 Tfansfoer 用词的增省（四） Exercises Chapter 5 Computer Section 1 Computer Basics 用词的增省（五） E,xercises Section2 Microprocessor alld Memory 用词的增省（六） Exercises Section 3 Input and Output DeVices 句型的转换 Exercises SectiOn 4 Sofware Basics 被动语态的翻译（一） Exercises Section 5 Computer。Network Basics 被动语态的翻译（二） Exercises Chapter 6 Electric Power Systems Section 1 Introduction 否定句的翻译（一） Exercises Section 2 Components of Power Systems 否定句的翻译（二） Exercises Section 3 Operation and Control of Power Systems 数量词的翻译（一） Exercises Section 4 Power System Stability 数量词的翻译（二） Exercises Chapter 7 Power System Protections Section 1 Introduction 简历（Resume） Exercises Section 2 Faults and Their Damages on Power Systems 商务信函 Exercises Section 3 Circuit Breakers 产品技术说明书 Exercises Section 4 Distance Protection 英语科技论文结构 Exercises Section 5 Lightning Arresters 学术论文写作（一）——论文标题 Exercises Chapter 8 Electric Power Generation Section 1 Coal—Fired Power Plants 学术论文写作（二）——论文作者姓名、单位与联系地址 Exercises Section 2 Hydropower Plants 学术论文写作（三）——摘要 Exercises Section 3 Nuclear Power Plants 学术论文写作（四）——关键词和引言 Exercises Chapter 9 Automation Control System Section 1 Introduction 学术论文写作（五）——正文 Exercises Section 2 Determination of the Overall Transfer Function 学术论文写作（六）——结论和参考文献 Exercises Section 3 Control—System Characteristics 电气工程及其自动化专业英文主要期刊一览表 Exercises Section 4 Frequency Response Exercises 参考文献
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100％正确非机器翻译铅的含量测定(II)用ICP(虹膜IntrepidαXSP热电公司、美国)。测量的pH值在pH计(MP220,Meterlo)。无机阶段的吸附剂确定用x射线衍射(Rigaku D / MAX2βA)。具体的面积是用氮气吸附法下的赌注,用硅Quantachrome QUADRASORB)。 来确定最佳初步汇总内容的碳量,初步汇总(05克)的初步汇总/碳纳米管与不同数量的初步汇总被引入,圆锥瓶100毫升的铅(II)溶液浓度变化(含)10-60毫克/升)pH值约0是补充。解决了2小时在一个固定的温度(25◦C)。这两个阶段分离过滤通过45μm微孔膜过滤。最后的铅浓度(II)中进行回顾性分析。解决剩余 这个平衡吸附capacitywas计算每个金属样品的铅(2)采用下列表达:质量是初步汇总/碳纳米管吸附能力(毫克/ g)、五样卷(l),(二)的铅浓度(毫克/升)、Ce均衡的铅(II)浓度(毫克/升),和m的重量,初步汇总/碳纳米管(g)。 初步汇总的数量和最大吸附容量大的初步汇总/碳纳米管发生被选为最优装载水平和保持不变。在接下来的adsorptions溶液的pH值在0,0和0被选出来学习的pH值影响铅(2)清除。 对于一个已知的均衡的研究,初步汇总/碳纳米管(05g)加到一个固定的样品溶液浓度变化(含10-60毫克/升),10毫克/升100毫升、pH值区间,0)。 样品制备了吸附动力学过程中加入1号到2000毫升初步汇总/碳(pH0),和铅(2)concentrationwas 30毫克/升,在预定的时间间隔298 样本,利用45μm滤膜,然后分析。 评估的热力学性质,首先,我们准备各种解决方案与最初的铅浓度(II)从10至60毫克/升,然后添加碳05g初步汇总每个方案。这些样本,然后摇动,在桃园连续2h 303、K 323。那些使用45μm过滤膜、filtrates用ICP测定。 1%。用x射线衍射分析和性能的影响,并初步汇总加载的水平 碳纳米管的表面积和初步汇总/碳纳米管都列在表1。装运后,小的孔宽度(初步汇总6nm)和更大的表面积(275m2 / g)进行了观察。这意味着一个潜在的更好的吸附。如图1、x射线衍射模式的原始的碳纳米管是由锋利的峰值和弱的顶峰。用x射线衍射模式的初步汇总/碳纳米管显示衍射模式的碳纳米管的结构,但展品包括一些明确晶体初步汇总(图峰。慢)。结果表明:初步汇总是一个non-stoichiometric、非晶相。
干德-化学分析的统计摘要位置样本载于表一。浓度重金属显示一系列到同一象限中的浓度，在相同的象限内，采样点派广泛地区上空—一些接近显示浓度高及其它污染的来源在该同一象限而远离源显示—ing低浓度。平均浓度水平的se-lected重金属含量(锰，铜，镍，钴、铅、镉、锌、铬，铝，和铁）在四个方向象限内，图2中所示。初步定性观察平均浓度再—sults为每个象限指示thatNi和Fewere中较高，西南象限，铅，铜，钴，高北-andCdwere西象限；东南象限；中较高的锌andMnwere和铝、铬是东北的象限中较高。莫是低，约等于整个浓度，研究领域。因为重金属的平均浓度出现在大多数在进行调查的站点的单向分析不等方差(方差分析）进行测试，signi吗？与不同，不能—heavymetalswith尊重的encesbetweenmean浓度在取样象限。测试的结果显示，signi吗？不能统计的区别(α的级别=10)，找到铅（P=082)和铜（P=081)西北地区象限。所有其他差异，平均浓度的重金属被发现不是统计signi吗？不能由象限取样使用从水泥的距离范围内植物。这方面缺乏统计signi吗？cance被认为是由于在中吗？水泥行业的运作的点数，全市Fuhais的本港的空气质素。铜、铅是signi吗？-cantly相关，他们考虑到的西北地区与重traf有直接关系呢？c模式的货运及汽车运输生和吗？nished材料出水泥厂。
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不知道，随便给你一个疏水缔合型聚合物P(AMTA)溶液性质的研究疏水缔合型水溶性聚合物是指在聚合物亲水性大分子链上带有少量疏水基团的一类水溶性聚合物。在聚合物水溶液中，疏水基团之间由于憎水作用而发生聚集，使大分子链产生分子内和分子间缔合。在临界缔合质量分数以上，形成分子间缔合为主的超分子结构，增大了流体力学体积，故具有较好的增黏性。在盐溶液中，由于小分子电解质的加入增加了溶液极性，使疏水缔合作用增强，表现出明显的抗盐性质。 疏水缔合型水溶性高分子很难合成，且不易表征，把疏水部分连接到水溶性聚合物链上，一般采用胶束共聚合或者使用具有表面活性的大单体进行共聚，胶束聚合需要在体系中加入大量的表面活性剂，这就增加了后处理过程的复杂性。利用表面大单体共聚合，需要事先合成大单体，这方面的技术也有相当大的难度。作者采用丙烯酸十四酯作为疏水单体，直接用沉淀聚合法制备疏水缔合型聚合物P(AM／TA)共聚物，从而使共聚反应及其产物的后处理过程较为简单易行。并用凯达尔定氮法表征共聚物的组成，研究共聚物的溶液性能和对苯丙乳液的增稠性。 1实验 1．1试剂 丙烯酰胺(AM)，质量分数不少于985％，根据文献提供的方法提纯；N,N-甲基甲酰胺(DMF)，分析纯；甲醇、氯化钠，化学纯；丙烯酸十四酯(TA)，实验室自制；苯丙乳液由福建省福州树脂有限公司提供。 1．2P(AM/TA)共聚物的合成 称取一定量的AM和TA单体，用DMF溶解，转入三颈瓶中，通氮除氧。升温至80℃，加入引发剂反应4h，过滤，产物用甲醇洗涤多次，以除去未反应的单体。40℃真空干燥至恒重。 1．3分析测试 凯达尔定氮法测定共聚物的组成。用乌氏黏度计测定共聚物溶液特性黏度[η]，测试温度为(30±O1)℃。聚合物溶液表观黏度用NDJ-I型旋转黏度计测定。 2结果与讨论 2．1共聚物稀溶液性质不同疏水基团摩尔分数的P(AM／TA)共聚物在蒸馏水和w(NaCl)=5％的溶液中的特性黏度[η]值列于表1。 聚合物的[η]正比于溶液中大分子线团的流体力学体积，因而能反应大分子线团收敛、卷曲的程度。从表1可知，随共聚物的TA链节摩尔分数的增加，其水溶液的[η]值逐渐减小，在w(NaCl)=5％的溶液中也是持续减小。这是因为在稀溶液中，疏水基团缔合以分子内缔合为主，随着TA摩尔分数的增加，分子内缔合增强，导致分子链卷曲。在盐溶液中，由于离子电荷的作用，使疏水链节分子内缔合力增强，分子链收缩，因而[η]值也持续下降。 2．2疏水基团TA摩尔分数对聚合物溶液黏度的影响 图1和图2分别表示P(AM/TA)系列共聚物及PAM在蒸馏水和w(NaCl)=5％的溶液中表观黏度与聚合物质量分数的关系曲线。PAM溶液黏度随其质量分数的增加而平缓上升，而疏水共聚物溶液的质量分数为3O％～4O％时其黏度急剧增加，表明疏水基团聚集而导致分子间缔合，形成了物理交联网络。此时共聚物溶液的质量分数即是临界缔合的质量分数。如图1所示，随TA摩尔分数增加，共聚物溶液的黏度显著增加。当疏水基团摩尔分数较高时，其溶液黏度随质量分数增加的速度更快，共聚物的临界缔合质量分数降低。如图2所示，加入Nacl溶液后，溶液表观黏度有较大提高，如质量分数为O％的P(AM/TA)-1 5聚合物溶液在20℃，转速为6r／min时，黏度达OmPs，而在水溶液中的黏度只有374mPa·s。不同TA摩尔分数的聚合物的质量分数均较其在纯水中低。Hydrophobically associating polymer P (AMTA) the nature of the study solution Hydrophobically associating water-soluble polymer is the hydrophilic polymer with a small amount of macromolecular chain hydrophobic group of a class of water-soluble Aqueous solution in the polymer, the hydrophobic groups and between the role as a result of hydrophobic aggregation occurred, so that large molecules have a molecular chain and inter-molecular Associating the critical mass fraction of the above, the formation of intermolecular association based supramolecular structure, increases the volume of fluid mechanics, it has good by In salt solution, because of the addition of small molecule electrolyte solution increased polarity, so that co-operation with enhanced hydrophobic association, shows that the nature of the Hydrophobically associating water-soluble polymer-based synthesis is difficult and not easily characterized, in part to hydrophobic chains connected to the water-soluble polymer, the general use of micellar copolymerization, or the use of the large surfactant monomer to copolymerization, polymer micelles need in the system by adding a large number of surface-active agent, which, after an increase of the complexity of the The use of the surface monomer copolymerization, the need for prior synthesis of large monomer, this technology also has considerable Author tetradecyl acrylate used as a hydrophobic monomer, the direct use of precipitation polymerization Preparation of hydrophobically associating polymer P (AM / TA) copolymers, so that the product of copolymerization and post-processing is more simple and easy And characterization of nitrogen determination Kedar copolymer composition, study the solution properties of copolymers of styrene-acrylic emulsion and of the 1 Experimental 1 Reagents Acrylamide (AM), the mass fraction of not less than 985 percent, according to documents provided by purification methods; N, N-dimethylformamide (DMF),分析纯; methanol, sodium chloride, chemical pure; acrylic 10 four acetate (TA), laboratory-made; styrene-acrylic emulsion resin from Fuzhou in Fujian Province L 2P (AM / TA) Copolymer Check that a certain amount of monomer AM and TA, using DMF dissolved into three-neck bottle, pass oxygen Warming to 80 ℃, reaction by adding initiator 4h, filtering, washing the product several times with methanol to remove unreacted 40 ℃ vacuum drying to constant 3 Analysis and Testing Determination of nitrogen Kedar will be the composition of Determination of intrinsic viscosity with copolymer solution viscosity [η], the test temperature (30 ± O1) ℃ Apparent viscosity of polymer solution with NDJ-I-type rotary viscometer 2 Results and Discussion 1 Dilute Solution Properties of Copolymers of different mole fraction of hydrophobic groups of the P (AM / TA) copolymers in distilled water, and w (NaCl) = 5% of the solution intrinsic viscosity [η] values listed in Table Polymer [η] is proportional to the solution of the fluid dynamics of macromolecular coil volume, which can respond to the convergence coil macromolecules, the degree of We can see from Table 1, with the copolymer chain of the TA increase in mole fraction, the aqueous solution of [η] value decreases in w (NaCl) = 5% of the solution is continued to This is because in dilute solution, the hydrophobic group to intramolecular association based association, with the mole fraction of the increase in TA, to enhance intramolecular association, resulting in the molecular chain In salt solution, because of the role of ionic charge, so that intramolecular hydrophobic chain to enter into force enhancement, molecular chain contraction, so [η] value continued to TA hydrophobic group 2 mole fraction of polymer solution viscosity on the impact of figures 1 and 2, respectively, P (AM / TA) series of copolymers and PAM in distilled water, and w (NaCl) = 5% in the apparent viscosity of the solution and the relationship between the mass fraction of polymer PAM solution viscosity with the increase of mass fraction of gentle rise, and the hydrophobic copolymer solution for the mass fraction of 3O% ~ 4O%, when a sharp increase in viscosity, indicating that aggregation of hydrophobic groups and lead to intermolecular association, forming a physical crosslinking网络 At this point the mass fraction of copolymer solution that is the critical mass fraction of the As shown in Figure 1, with the mole fraction of TA increased, the viscosity of copolymer solution increased When the mole fraction of hydrophobic groups is high, the solution viscosity increases with the mass fraction of the faster, the critical aggregation copolymer mass fraction As shown in Figure 2, by adding Nacl solution, the solution has greatly enhanced apparent viscosity, such as the mass fraction of O% for the P (AM / TA) -1 5 polymer solution at 20 ℃, rotation speed 6r/min , the viscosity of OmPs, and viscosity in aqueous solution only 374mPa TA different mole fraction of the mass fraction of polymer in water were