Lydia胖胖
The Importance of Chemistry in Daily LifeMost people have chosen to write their essay about how chemistry has played an important role in everyday life. I have chosen to ask, how doesn't it play a role in everyday life? The simple fact is that chemistry plays an important role in every person's daily activities from the moment we're born.So what role does chemistry really play in everyday life? Well, this involvement usually begins first thing each morning. Most people wake up to an alarm or radio. These common household items contain batteries, which make them very chemically dependent. These batteries contain positive and negative electrodes. The positive electrode consists of a carbon rod surrounded by a mixture of carbon and manganese dioxide. The negative electrode is made of zinc. Chemistry plays an important role in the discovery and understanding of materials contained in these and many other common household items. Things like household cleaners and water purification systems are vitally dependent on chemistry. Without chemistry something as simple as scrubbing a toilet without fear of severe burns or small explosions might not be possible.Next, though it isn?t widely known, chemistry is also heavily involved with the manufacturing of things such as makeup and soap. Each time you bathe you are witnessing chemistry at work. Chemicals such as cetyl alcohol and propylene glycol are typical ingredients in the soap used to wash your hair and skin. Without chemistry, these materials (or combinations of these materials) might be hazardous or might not exist. The chemical coloring agents used in makeup and nail polish would not be possible without an understanding of the chemicals involved.Almost anything you do during the course of a normal day involves chemistry in some way. The gas and tires in cars we drive, the makeup we put on our faces, the soaps and cleaners used everyday, burning wood or other fossil fuels, chemistry is all around you each and every day. The associations are practically limitless. So, as you go about your daily activities, remember to thank chemistry. As my teacher always says, remember, "CHEMISTRY IS LIFE!"
灰羽联盟
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 wereinvestigated. Textural parameters of four kinds of polymeric resins namely AB-8 D4006 NKA-II and D16 resin were separately measuredby ASAP 2010. 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 resins. 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 volumes. 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 resins. 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 resins. These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface chemistry. The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric resins. 2004 Elsevier B.V. All rights reserved. Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography
xiaoshu20061
gavin7991 - 举人 四级 说的很详细,但更加简洁明了的说法是:硕士论文用thesis,eg. MA thesis (文学硕士论文),博士论文用dissertation, 学期论文或发表的文章可用paper,essay指篇幅较短小的文章,相当于作文类或散文类
唉唉,跨文化交际的“研究”势头很猛啊。居然有这么多在校的本科生或研究生关注这一话题,无论是出于自身发展的需要还是毕业的需要。倒也是,学语言就是学文化,只要你学英
首先撰写文章,然后进行投稿,杂志社进行审稿,中间可能会修稿再审,审稿通过,最后见刊。文章发表完成
首先撰写文章,然后进行投稿,杂志社进行审稿,中间可能会修稿再审,审稿通过,最后见刊。文章发表完成
也就是自己的联系方式姓名这些,不用太啰嗦,而且没有写也不要紧,除非你个人希望别人赞助或者其他目的,还是可以加上的,如果发表论文遇到什么困难,还给你推早发表网,网
毕业论文格式1、论文题目:要求准确、简练、醒目、新颖。2、目录:目录是论文中主要段落的简表。(短篇论文不必列目录)3、提要:是文章主要内容的摘录,要求短、精、完