二氧化硫的控制技术及其研究进展

综述了二氧化硫气体的处理技术，着重介绍了微生物法处理二氧化硫、催化还原法处理二氧化硫和活性炭纤维法处理二氧化硫的技术和研究进展。     

小议火电厂二氧化硫减排要点

随着国家经济的不断增长,我国火电业也得到了快速的发展,而在其迅速发展的同时也必定会增加二氧化硫的排放量。本文首先介绍了现阶段全国火电厂二氧化硫的排放情况以及发展趋势,并根据其中二氧化硫的减排问题提出了相应的解决对策。     

大气污染治理助推绿色发展（英文）

化石燃料尤其是煤炭利用过程中排放的二氧化硫、氮氧化物、颗粒物和重金属等污染物以及二氧化碳等温室气体已引起国内外的广泛关注,并已成为能源环境领域的研究热点。近几年,国内外在烟气污染物控制以及CO_2捕集和利用方面取得了显著的进展。然而如何进一步提高污染物的脱除效率、如何实现多污染物高效协同脱除以及如何实现污染物的资源化利用等方面尚需进一步研究;如何实现CO_2的资源化和循环利用也得到国际上的普遍关注,亟需基础研究支撑技术突破。本专辑收集了在该研究领域具有影响力的研究人员的最新研究成果和观点,介绍了该领域的最新研究进展,希望能帮助读者了解相关研究工作并促进研究人员开展讨论,推进该领域的基础研究和技术创新,为实现能源消费清洁化、低碳化和绿色化提供科学和技术支撑。     

全封闭SO2制取与性质实验演示器具

二氧化硫是一种有毒的气体,如果按照通常的制取方法及性质实验时,二氧化硫容易外逸,污染室内空气,影响师生健康.为此我们设计了全封闭二氧化硫制取与性质实验演示装置,收到了较好的教学效果,现介绍如下:     

全封闭SO2制取与性质实验演示器具

二氧化硫是一种有毒的气体,如果按照通常的制取方法及性质实验时,二氧化硫容易外逸,污染室内空气,影响师生健康.为此我们设计了全封闭二氧化硫制取与性质实验演示装置,收到了较好的教学效果,现介绍如下:……     

“酸雨”形成的趣味实验

介绍了一套关于"硫酸型酸雨形成"的实验。与课本原有实验比较,增加了二氧化硫对植物的影响、酸雨对金属和石灰石的腐蚀以及二氧化硫溶于水后装置内气压的变化等实验内容。     

巧用H管验证二氧化硫的性质

本文主要介绍了关于二氧化硫性质的创新实验。本人根据教材设计思想,分析学生学习情况及二氧化硫的危害,探索全新的实验方法以及学生的学习方法,体现绿色化学的理念,这符合新课改的要求。     

富乙烯气中含氧杂质脱除技术的进展

概括介绍了乙烯的应用及含氧杂质对富乙烯气生产操作的危害,主要归纳了最近几年来国内外对富乙烯气中含氧杂质的脱除方法,指出了目前工业脱除富乙烯气中含氧杂质所运用的技术,最后,对含氧杂质从富乙烯气中脱除的技术在今后发展的趋势进行了展望。     

新课程背景下《二氧化硫》教学案例

新教材中"硫和氮的氧化物"一节教材先从人们熟悉的空气质量日报提出相关的四个问题,然后安排了三个内容:二氧化硫的性质;二氧化氮、一氧化氮的性质;二氧化硫和二氧化氮对环境的影响.第一课时主要学习二氧化硫的性质及其对环境的影响,第二课时主要学习二氧化氮和一氧化氮的性质以及它们对环境的影响,最后综述酸雨对环境的影响以及有关的预防措施(用化学原理解释).下面介绍第一课时的教学过程.     

二氧化硫和氯气对植物的危害及其验证

目前大气污染物有 10 0多种 ,其中影响范围广 ,对生物危害大的主要有二氧化硫 (ＳＯ2 )、氯气 (Ｃｌ2 )、一氧化碳 (ＣＯ)、氟化物、二氧化氮 (ＮＯ2 )、粉尘和汞、镉、砷、硒等。而对植物危害最明显的又数二氧化硫、氯气、氟化物、光化学烟雾。了解大气污染对植物的危害性 ,明白污染源对植物的危害机理及被害植物的受害症状可以唤起人们的环保意识 ,增强维护环境的自觉性。本文拟将二氧化硫和氯气对植物的危害机理、受害症状及过程作一简要的介绍 :1　二氧化硫对植物危害的机理及被害植物的受害症状二氧化硫是污染的大气中危害植物的主要气…     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.