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生化试剂是化学试剂工业中的一个新兴的门类,是研究生物学的重要工具。随着生物化学和分子生物学的基础研究和实际应用的不断深入,生化试剂的发展十分迅速。在国外,生化试剂生产已成为专门化的工业,不再依附于一般的化学试剂厂,生产单位逐年增多,产品的门类和品种也不断增加,且产品的质量不断提高,服务的方式不断改进,生产与科研的关系也有新的发展。一、生化试剂的分类、品种和规格为了便于生产和使用,各生产单位对各自的产品进行了分类、编目。分类的原则有以下几个: 1.按生物体组织中所含有的或是在代谢过程中所产生的物质来分类,如蛋白质、多肽、氨基酸及其衍生物、核酸、核苷酸及其衍生物、酶、辅酶、 相似文献
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《化学试剂》2016,(5)
正各有关单位:为总结、交流化学试剂与应用技术的进展及最新成果,分析市场需求,搭建产、学、研、销、用平台,促进化学试剂应用技术的发展,定于2016年11月在广州举行"第十届全国试剂与应用技术交流会"。会议由全国化学试剂信息站主办,《化学试剂》编辑部、广东工业大学承办。本次会议将围绕"试剂品类和技术发展与实验室危险化学品管理"的主题,研讨我国试剂行业的技术及发展;围绕实验室危险化学品事故等热点问题进行研讨,提出危险化学品事故危机的解决方案,力求推进试剂行业的发展。会议将发布《2014-2015年度中国试剂行业发展研究报告》、《2015年度中国试剂品牌影响力报告》;会议特邀请 相似文献
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Criminalistics is a field in which there are many opportunities for the practical application of chemical reagents and the use of analytical methods that provide answers to enigmas at crime scenes. Common reagents in biochemical and medical test methods can be useful for criminalistics (forensic science). Dyes are one type of reagent that can be used in obtaining crime scene evidence. This work describes a new application of CI Solvent Black 3 dye in the location of latent fingerprints. The results show that CI Solvent Black 3 can be successfully applied in the location and development of recent and non-recent latent fingerprints on porous surfaces. 相似文献
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The heat transfer efficiency of sea water desalters is very often impaired by the deposition of scale of various compositions on the heat transfer surfaces. Four major classifications of such scales can be recognised—corrosion products such as iron and copper oxides, alkaline scale Ca(OH)2 and MgO, additive scales consisting of calcium and magnesium combined with additive materials that are usually soft and easily removed, and calcium sulphate.Acid cleaning techniques have been developed and successfully applied to the problem of removing in the first 3 categories of scale and these are reviewed. However for calcium sulphate scale there is as yet no widely accepted chemical cleaning process and mechanical methods are usually adopted. These also are briefly considered and shown to be inadequate to deal effectively with every instance of calcium sulphate scaling. The need therefore for chemical descaling techniques able to adequately remove calcium sulphate is shown to be clear.A number of chelating agents which can dissolve calcium sulphate and therefore are potential candidates for the formulation of a suitable reagent have been reviewed and two such reagents taken to pilot scale trials. These trials included corrosion tests on a typical range of desalter construction materials and in later work used actual scale removed from operational plants.From the data obtained an economic assessment of the use of these reagents for the descaling of a typical desalter heat input vessel was made, from which it was concluded that the once through application of either reagent could only be considered feasible for limited treatment. To overcome this economic problem, processes for the regeneration of the spent reagents have been developed to the pilot plant stage. From this data one reagent has been chosen and following continuing development, a design for a mobile chemical descaling unit has been evolved. This unit, which also has the capability of carrying out a wide range of descaling operations is described. 相似文献