化学专业英译汉急求帮助！！

yy9ft6 2011-03-07 21:54:47 463 浏览

Precious metals are found in the process and wastewater streams of various industries including mining [1，2]， ore and metal processing [3]， semiconductor and electronic manufacturing [4，5] and e-Waste recycling [6，7]. Numerous works discu... Precious metals are found in the process and wastewater streams of various industries including mining [1，2]， ore and metal processing [3]， semiconductor and electronic manufacturing [4，5] and e-Waste recycling [6，7]. Numerous works discuss the use of adsorption for precious metal separation and recovery [8-17]. Selective adsorption is an attractive technology for separation， removal and recovery of precious metals. Gold [9]， silver [10]， platinum [11] and palladium [12] were selectively adsorbed from binary and complex mixtures and recovered at high purity using polymeric resins [13] and adsorbents made from MCM-41 [14-16 ] and SBA-15 [17]. Tsezos and coworkers [18] reported the adsorption of palladium， gold， uranium， yttrium， silver and nickel by biomass derived from two bacteria strains. They observed that the biosorbents preferentially adsorbed gold and silver， both classified as soft metals according to Pearson’s hard-soft acid-base (HSAB) principle [19]. 展开

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gaopenfzhulu 2011-03-08 00:00:00

贵金属在此过程中被发现的，包括采矿和废水[1，2]，矿石和金属加工[3]各行业流，半导体和电子制造[4，5]和电子废物回收利用[6，7]。众多作品讨论了吸附分离回收贵金属[8-17]使用。是一种选择性吸附分离，去除和贵重金属回收有吸引力的技术。金牌[9]，银[10]，铂[11]和钯[12]是从二进制选择性吸附和复杂的混合物，在高纯度恢复使用高分子树脂[13]和MCM的制成的吸附剂- 41 [14-16]和SBA - 15 [17]。 Tsezos等[18]报道了钯，金，铀，钇，银，镍由两个细菌菌株产生生物质吸附。他们指出，生物吸附剂吸附优先黄金和白银，因为根据Pearson的硬软酸碱软金属分为两种（硬软酸碱）的原则[19]。

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化学专业英译汉急求帮助！！: Precious metals are found in the process and wastewater streams of various industries including mining [1，2]， ore and metal processing [3]， semiconductor and electronic manufacturing [4，5] and e-Waste recycling [6，7]. Numerous works discu... Precious metals are found in the process and wastewater streams of various industries including mining [1，2]， ore and metal processing [3]， semiconductor and electronic manufacturing [4，5] and e-Waste recycling [6，7]. Numerous works discuss the use of adsorption for precious metal separation and recovery [8-17]. Selective adsorption is an attractive technology for separation， removal and recovery of precious metals. Gold [9]， silver [10]， platinum [11] and palladium [12] were selectively adsorbed from binary and complex mixtures and recovered at high purity using polymeric resins [13] and adsorbents made from MCM-41 [14-16 ] and SBA-15 [17]. Tsezos and coworkers [18] reported the adsorption of palladium， gold， uranium， yttrium， silver and nickel by biomass derived from two bacteria strains. They observed that the biosorbents preferentially adsorbed gold and silver， both classified as soft metals according to Pearson’s hard-soft acid-base (HSAB) principle [19]. 展开

英译汉急急急: Before fractionation on a semi-preparative scale， we analyzed UA using an analytical DEAE-Cellulose column. The profile showed an unbound portion eluted with water and a bound portion eluted with a linear gradient of NaCl.

英译汉－－给高分，急！！: Abstract The hollow cathode will be presented as a plasma source for reactive evaporation processes. The hollow cathode generates an arc discharge plasma. This contains a high portion of directed electrons with an enhanced mean energy， the... Abstract The hollow cathode will be presented as a plasma source for reactive evaporation processes. The hollow cathode generates an arc discharge plasma. This contains a high portion of directed electrons with an enhanced mean energy， the so called low voltage electron beam (LVEB). The mean energy of the LVEB， in the range of 11 eV， results in a very effective ionization of the gas and vapor particles. Consequently， very high plasma densities can be achieved， which corresponds to high particle densities in high-rate deposition processes. Furthermore， a high self bias potential of about 16 V is obtained on insulating substrates. For the coating of heat-sensitive substrates with high deposition rates a process with a low ratio between thermal load and deposition rate is necessary. The heat flux on plastic substrates 2 has been measured at the reactive Al evaporation process. The overall thermal load of about 4 W/cm related to a deposition rate of 100nm/ s is low in comparison to other processes. This makes the hollow cathode a favorable tool for the plasma-activated high-rate deposition. The oxide layers deposited by this process show dense and glassy structures even at comparatively low condensation 2 temperatures. This is caused by the high ion current densities in the order of 30 mA/ cm . The low ion energy determined by the self bias potential results in relatively low compressive stress below 100 MPa. The low thermal load and the moderate intrinsic stress of the layers makes the hollow cathode plasma-activated deposition (HAD) process the method of choice for the deposition of oxides as abrasion resistant layers on plastic films and sheets. Ó 1998 Elsevier Science S.A. All rights reserved. 1. Introduction Table 1 shows typical layer materials that have been deposited by the PMS–DMS process and the corre-In recent years， the importance of coating plastic sponding dynamic deposition rates. The dynamic deposisurfaces with oxides and nitrides has increased. Typical tion rate is defined for moving substrates as the product of applications are solar control and low-emissivity multilayer the layer thickness and the substrate transportation speed. systems for window panes and window films， antiabrasion The HAD (hollow cathode-activated deposition) process layers on plastic films， plastic sheets and plastic parts as is the combination of a high-rate evaporation process and a well as barrier layers for packaging films. high-density plasma activation using the hollow cathode 展开

急求化学实验思考题！！！: 丁香酚的提取和分离实验思考题： 1. 从丁香中提取分离丁香酚的原理是什么？ 2. 除可利用水蒸气蒸馏法提取挥发油外，还可采用什么方法提取挥发油？薄层色谱实验思考题： 1. 薄层色谱的优点有哪些？如何利用比移值（Rf）来鉴定化合物？ 2. 薄层色谱法点... 丁香酚的提取和分离实验思考题： 1. 从丁香中提取分离丁香酚的原理是什么？ 2. 除可利用水蒸气蒸馏法提取挥发油外，还可采用什么方法提取挥发油？薄层色谱实验思考题： 1. 薄层色谱的优点有哪些？如何利用比移值（Rf）来鉴定化合物？ 2. 薄层色谱法点样应该注意些什么？为何要在密闭的展开缸中展开？ 3. 如果样品点水浸在展开剂液面以下，对色谱结果有何影响？急急急！！！展开

显微镜由几部分组成?求帮助，急？:

急求英译汉高手（词霸翻译不加分）翻译好了追加50: http://hi.baidu.com/lyl464797826/blog/item/0c12e646eca6ee3287947334.html

为什么化学仪器要磨口？求大神帮助: 三口瓶、冷凝管之类的化学仪器，通常在实验时要相互连接，它们的连接部位都采用磨口，请问：磨口是不是能起到更密封的作用？其磨口凹凸不平，怎么能密封呢？

急求：人教版化学必修5总结: RT

我是计算机嵌入式专业的学生，迷茫，求帮助！！！: 我是计算机嵌入式专业大二的学生，平时只工读课本，现在发现这样不行了，我关于电脑的知识了解的不多，现在的专业的东西，也只学到了C和C++，我想问下，我通过什么方式可以了解到更多有关电脑的知识，我想学一些嵌入式专业的东西，但现在不知道学什么，困惑中... 我是计算机嵌入式专业大二的学生，平时只工读课本，现在发现这样不行了，我关于电脑的知识了解的不多，现在的专业的东西，也只学到了C和C++，我想问下，我通过什么方式可以了解到更多有关电脑的知识，我想学一些嵌入式专业的东西，但现在不知道学什么，困惑中，求帮助！希望能将的细致些！！！展开

cpu核心温度比表面温度高急急急!求大神帮助: 我的CPU核心温度比表面温度高，核心温度比表面温度高10度左右，但2个核心温度有相差3度左右，这样正常吗，CPU奔腾E6500 谢谢大家。因为我朋友的相反，表面温度高于核心温度。

马丁代尔耐磨测试仪的详细介绍，急求帮助？:

化学专业分类: 喜欢化学，大学想报化学系，但是对其具体分类知之甚少。请帮我介绍一下无机化学，分析化学，生物化学，物理化学的相关研究方向和前景。

化学专业英语翻译: 以Na2WO4.2H2O和Zn(NO3)2.6H2O为原料，采用水热法制备出ZnWO4纳米晶催化剂。以曙红B为目标降解物，研究了ZnWO4催化剂的光催化性能，探讨了水热温度、水热时间和水热溶液pH值对ZnWO4催化剂的结晶形态及光催化活性的影响规律，结果表明:在酸性条件下制备的ZnWO4为片... 以Na2WO4.2H2O和Zn(NO3)2.6H2O为原料，采用水热法制备出ZnWO4纳米晶催化剂。以曙红B为目标降解物，研究了ZnWO4催化剂的光催化性能，探讨了水热温度、水热时间和水热溶液pH值对ZnWO4催化剂的结晶形态及光催化活性的影响规律，结果表明:在酸性条件下制备的ZnWO4为片状结构，链状分布，而在碱性条件下为棒状结构。在180℃，24 h的制备条件下，ZnWO4催化剂显示出Z高的光催化活性。水热溶液pH=5和pH=8时制得的催化剂在2 h内对5 mg/L的曙红B溶液的脱色率分别达到86%和95%。制备过程中溶液的pH值，催化剂的晶态和比表面积是影响催化剂活性的重要因素。展开

波谱考试，求帮助: 某未知物的分子式为C9H10O2，紫外光谱数据表明：该物λmax在264、262、257、252nm(εmax101、158、147、194、153)；红外、核磁、质谱数据如图4-1，图4-2，图4-3所示，试推断其结构。我知道答案，求详细推导过程。在线等，急！！！

高分急求~ 有关化学的论文~5000字以上~~: 要一篇有关化学的论文，关于化学的任何方面都OK~字数是越多越好，5000字为底线~谢谢啦~... 要一篇有关化学的论文，关于化学的任何方面都OK~字数是越多越好，5000字为底线~ 谢谢啦~ 展开

求翻译，不求专业，但求通顺，GOOGLE，有道，亦可！急！！！: UsingthePhillipscurvetoanalyzethedynamicimpactofoilpricefluctuationonU.S.inflation，Hooker(2002)firstproposedthisviewandfoundthattherelationshipcanbenegligibleinthelaterha... Using the Phillips curve to analyze the dynamic impact of oil price fluctuation on U.S. inflation， Hooker (2002) first proposed this view and found that the relationship can be negligible in the later half of the study period [5]. Jones et al. (2004) also support this view by summarizing the related literature [6]. However， as Balke et al. (2008) pointed out that these documents only can explain the phenomenon of gradually weakened negative relationship， and it can not explain why the relationship now is positive [3]. So the existing literature can not effectively explain the cause of the changing relationship. Generally in the oil market the sources leading to price fluctuation are comprised of oil supply shocks， economic demand shocks and precautionary demand shocks. Oil supply shocks are the factors that impact oil price fluctuation through oil production volatility. Economic demand shocks are the world economic factors that impact oil price fluctuation through world oil demand volatility. Precautionary demand shocks are specific to the crude oil market and designed to capture shifts in the price of oil driven by higher precautionary demand associated with fears about the availability of future oil supplies. If oil price is driven by different factors， the economic consequences will be different. When commenting on the view of Blanchard and Gali (2007) [7]， U.S. energy economic research scholar Rotemberg (2007) [8] also pointed out that the dynamic changing relationship between oil price fluctuation and economic development can be interpreted from this angle， but he did not carry out theoretical and empirical analysis. This is precisely the source of the ideas of the paper. 展开

注塑机温度不正常，求帮助: 我的注塑机刚开机，还没按加热就有一个接触器开始工作升温，而且温度上升控制不了，什么原因求帮助有时候正常工作，忽然就有一段温度控制不了，一直向上升，不知道哪里出了问题？？现... 我的注塑机刚开机，还没按加热就有一个接触器开始工作升温，而且温度上升控制不了，什么原因求帮助有时候正常工作，忽然就有一段温度控制不了，一直向上升，不知道哪里出了问题？？现在问题在哪我也搞不懂，机器在正常工作中忽然有段温度急速上升，比如我设定的230度不一会就升到300度，然后我就手动设到310度，它到了310度就不升了，我再慢慢把温度降下来，工作1小时左右又来了，是不是哪里接触不良导致的！我在江苏南通港闸区，请懂注塑机的师傅给我修理一下，联系方式：13626275201赵先生（急）展开