本文讨论了在交流阻抗拟合时常见的几种情况： 电极阻抗和双层电容的效应 电荷传输阻抗 无限和有限扩散阻抗（Warburg Impedance） 恒相位元素（Loss Capacity） 电线电感和参比电极耦合效应

光电效应发生在半导体的界面上，产生的电流和电压取决于光照强度。 光电流和光电压是动态传输函数中一对典型的响应参数。 像研究交流阻抗传输函数一样，强度调制的光谱可以用来研究光电效应的研究。

超级电容的应用越来越重要。本文使用电化学技术对改进超级电容的性能进行了系统研究。 关键词： Activated carbon; Intercalation; Electrochemical properties

Atlas自动合成反应系统主要特点： * 电脑全自动控制反应，可自动控制温度、转速、PH值等等，具有USB接口储存 数据 * 高效率的加热板或者油浴加热，可快速加温到280℃，并精确控温 * 高效的电磁搅拌或机械搅拌 * 模块化设计，根据应用不同反应容积从50mL到5L不等 * 有平行合成附件可送

Heca EIProscan是一台扫描探针显微镜，它是研究样品表面电化学活性的强有力的工具。该系统包括三个主要部分：定位装置、双恒电位仪及数据采集/分析单元。定位装置实现探针在样品表面的扫描和精确定位，这与一般的扫描电化学显微镜(SECM)相同。 EIProscan与普通的SECM的差别在于：EIProscan采用FPP(free programmable pulse)协议可对探针执行任意的电化学方法，基于该协议，可在样品进行电化学测试的同时对探针施加与样品相同的电信号，该方法对于电活性表面的微观修饰及材料对于电扰动的响应等研究非常重要。

由于超临界CO2的诸多优点，使得此技术在天然药物的萃取方面具有广泛的应用。超临界CO2不但可以高效率的萃取，也可以利用特点进行微粒制备。

某些合金材料已经众所周知具有与氢气和氮气反应并在适当的条件下生成新的化合物。气体被吸收的总量可能很大。例如，1cm3的LaNi5吸收大约1000cm3的氢气后生成氢化物LaNi5H6。由于反应过程很容易地被反向进行而重新获得氢气，这个现象促进了将这种非凡的材料用于储存氢气器件的研究。这一研究工作在利用反应所生成热量方面的进展，使汽车空调和其它热泵系统在使用“清洁”氢气方面显然是刚刚转向。镍金属氢化物电池已经成为笔记本电脑的主要电源。

EDXRF产品是用于受RoHS限制有害元素的快速检测仪器，它可以快速，准确并且无损的对样品进行检测。

本文建立了用超临界萃取提取牛肝中的β-agonists兴奋剂的方法.此方法适用于不同的β-agonists激动剂类别.如:替代苯胺类(β肾上腺素受体激动剂clenbuterol)和酚类(β肾上腺素受体激动剂salbutamol).开发的实验采用超临界萃取和酶免疫测定技术,可以检测ppb级的激动剂的残留. 添加一定的甲醇改性剂和样品的除水对于极性比较强的salbutamol的萃取是必要的.实验结果表明了很好的回收率和低的误差.

Biotage® 是快速制备色谱和微波合成技术行业的著名公司,最近又推出新型的SNAP柱子. Biotage® SNAP 柱子可以应用到所有的快速制备色谱仪器上． 使用方便的Luer-lok® 连接头，可以达到100psi的压力.SNAP 柱子使用USP Class VI 材料大大提高了分离纯度并可以观察到溶剂的流动. SNAP提供七种上样方式,其中包括三种干法上样技术.

文章简述了用滴定的方法研究配体和受体之间的结合性质。等温滴定有两个有点，实验比较快速，能够得到连续的结合热数据。用等温微量热仪可以知道两个物质之间有没有结合，可以知道结合的比率，还可以知道焓变和熵变对G的贡献。综合大量例子来解释相关的数据。

Keeping batteries at optimum temperatures is essential for reliable operation as Ahmad Pesaran of the National Renewable Energy Laboratory explained at the AABC conference in Las Vegas.

Battery thermal management is critical for high-power battery packs commonly used in electric vehicles (EV) and hybrid electric vehicles (HEV). To design battery thermal management systems properly, obtaining accurate heat generation data from battery modules is essential. To measure heat generation from full-size, multiple-cell battery modules, we developed and tested a custom-made calorimeter for large modules. Battery modules with dimensions up to 21 cm x 39 cm in cross section and 20 cm in height can be placed in the cavity of the calorimeter for measuring heat generation rates from 1 W to 100 W with the battery operating at -30(C to +60(C. The instrument is capable of measuring heat effects as small as 10 joules with accuracy of 5%. A state-of-the-art high power battery cycler is used to cycle the modules in the calorimeter. This paper provides a description of the calorimeter, calibration test results on its performance, and test results from a module simulating a HEV lead-acid battery.

本文介绍了一种小型化的电位型固定化酶生化传感器的制作过程。生化传感器芯片利用有机磷水解酶（OPH）直接检测杀虫剂。芯片的换能器（Transducer）采用一种对pH值变化敏感的电容性“Electrolyte-insulator-semiconductor”（EIS）结构设计，该结构的反应活性与pH值变化量密切相关，而有机磷化合物的酶催化水解可导致环境的pH值发生显著变化。该传感器采用传统的Ag/AgCl参比电极，主要工作在两种方式下：电容/电压（C/V）和恒电容模式（constant capacitance mode),分别对应两种不同类型的杀虫剂检测：paraoxon（对氧磷，磷酸二乙基对硝基苯基酯）和parathion（对硫磷，硝苯硫磷酯，一六〇五）。作者从多个角度，研究发展了这种新型传感器的性质：不同的固定化酶策略，缓冲溶液的构成及浓度的影响，换能器的材料，检测限，长期稳定性及选择性等。 本文作者采用的是德国Zahner公司的电化学工作站，Zahner在其软件中的PVI模块内提供了专用于电容型传感器研究的ConCap方法，无疑是国内电化学工作者的一大福音。

Solid-Assisted Solution Phase Synthesis (SASPS) is a technique where the target molecule is synthesized in solution and solid-supported molecules are used as reagents, catalysts or scavengers. Recently this technique has been getting a lot of attention as an alternative to solid phase organic synthesis (SPOS), since it offers many of the advantages of SPOS in terms of ease of reaction workup and product purification in addition to the advantages associated with traditional solution-phase chemistry (e.g. the ease of monitoring the progress of the reaction by simply applying LC-MS or TLC techniques). A disadvantage of this technique is the relative slow reaction rate, and many of these reactions are sluggish and require hours for complete conversion. The advent of Microwave-Assisted Organic Synthesis (MAOS) has helped accelerate these reactions and the technique is gaining rapid popularity as evidenced by the increasing number of publications on this topic. The polymer backbones are in general, stable at the high temperatures used with MAOS for the short periods of time required for most of these reactions. This technique is particularly well-suited for automation and can easily incorporate in-line purification protocols, such as reagent and byproduct scavenging and catch-and-release. This introduces the possibility of direct highthroughput synthesis of compounds with intrinsically high purities suitable for biological screening without the need for further purification.

做微波反应时,许多参数都是非常重要的. 参数的正确选择对于合成的结果非常重要.本文从实际出发,对于如何选择溶剂,体积,浓度,反应相,搅拌,反应环境,时间,温度,压力等参数进行了讨论.

Sample Preparation Dilute 1.0mL of serum with 2.0mL of 0.1 M ammonium hydroxide. Add internal standard. Cartridge Conditioning 2mL methanol, followed by 2mL distilled water.

Microwave heating was used to prepare 5-rhenium carborane complexes in aqueous reaction media. For carboranes bearing sterically demanding substituents, isomerization of the cage from 3,1,2 to 2,1,8 derivatives occurred concomitantly with complexation. Microwave heating was equally effective at the tracer level using technetium-99m, affording access to a new class of synthons for designing novel molecular imaging agents.

Solid Phase Extraction (SPE) allows samples to be prepared nine times faster with less expense than traditional techniques. Solvent usage is greatly reduced and samples are concentrated. This alternative requires only one sample addition and is accomplished in 4 easy steps. Column Conditioning；Sample Addition；Column Wash；Sample Elution.

Solid Phase Extraction (SPE) allows samples to be prepared nine times faster with less expense than traditional techniques. Solvent usage is greatly reduced and samples are concentrated. This alternative requires only one sample addition and is accomplished in 4 easy steps. Column Conditioning；Sample Addition；Column Wash；Sample Elution.

Solid Phase Extraction (SPE) allows samples to be prepared nine times faster with less expense than traditional techniques. Solvent usage is greatly reduced and samples are concentrated. This alternative requires only one sample addition and is accomplished in 4 easy steps. Column Conditioning；Sample Addition；Column Wash；Sample Elution.

Sample Preparation Re-dissolve an evaporated C18 (APP135) or solvent extract in 1.0mL of-hexane. Sample Addition Add 0.5mL of sample to the cartridge aspirate the sample through the cartridge at low vacuum (1-2in. Hg).

我们实验室在摸索了10 种磺酰脲除草剂的前处理方法后，确定了采用固相萃取技术（SPE）小柱对土壤基质进行净化，方法建立了以后，与环球仪器公司合作使用其公司制作的C18SPE 固相萃取小柱作为净化过程中使用的柱子。

SPE 柱先用6mL 甲醇活化，再用3mL 超纯水冲洗，然后用固相萃取装置富集样品。样品以2~3mL·min-1 流速过SPE 柱，再以3mL 25mmol·L-1 柠檬酸三钠缓冲溶液（pH 5.01）淋洗，真空抽干后以3mL 甲醇（含 5%（v/v）甲酸）洗脱。洗脱液用氮吹浓缩仪恒温40℃吹扫浓缩近干，准确加入0.50 mL 超纯水超声溶解后进行HPLC 分析。

、样品的采集 使用棕色玻璃瓶采集水样，对于非地表水采样要求大体积样品都采用24 小时 连续采样技术，间隔1 小时采样1 次，采完后混匀，注明采样时间、采样地点、样品编号、样品名称、采样人姓名等；加入0.5%的甲醇（抑止微生物活性，保持目标化合物溶解状态）；对于自来水样品加入40-50 mg/L 的亚硫酸钠除氯；同时使用6N的HCl 调整水样的pH 到<2.0。样品运回实验室后保存于冰箱（4℃）中，密封保存（注意避光），在存放样品时，应尽量注意存放在没有有机气体干扰的区域，以免交叉污染。所采样品在14 天内前处理完毕，一个月内分析完毕。

中文通用名：杀铃脲 英文通用名：triflumuron 中文商品名：杀虫脲，氟幼灵 英文商品名：Alsystin, Mascot 化学名称：2-氯-N[[[4-(三氟甲氧基)苯基]氨基]羰基]苯甲酰胺 理化性质：无味无色粉末，熔点为195℃，溶解度（20℃）水中0.025mg/L， 二氯甲烷中20-50g/L，异丙醇1-2g/L，甲苯2-5g/L，己烷<0.1g/L(20℃)。中性或酸性介质中稳定，碱性介质中水解。 方法原理简述：用乙腈浸泡震荡提取样品，C18 固相萃取柱净化，用带紫外检测器的液相色谱测定。

Determination of COOH end groups in Polyester plaistics such as PET by potentiometric titration. The results is expressed in meq (milli equivalent)/kg plastic.

Determination of acid number in alkyd resins, polyester acrylate resins or mixtures. by potentiometric titration. The results is expressed in mg KOH/ g sample.

Determination of strong acids such as HCl, H2SO4 HNO3 in high concentrations using 1 m NaOH as titrant.

Standardisation of acid titrants suc as HCl, H2SO4 and HNO3. with the volumetric standard reagent TRIS (Tris hydroxymethyl) aminomethane.