光谱与色谱方法用于有机合成分析

系统深入地研究了光谱与色谱方法用于有机合成分析，本文依据光谱与色谱方法发现传统合成过程中金属卟啉相互转化问题，并进行了深入探讨，从而改进了合成方法，取得良好结果。     

联用色谱重叠峰中目标光谱的二次投影分辨

基于正交投影原理和局部主成分分析,建立了一种新的联用色谱重叠峰中目标组分光谱分辨方法,二次投影分辨法,该法能有效的从多组分联用色谱重叠峰中分辨出目标和光谱与色谱。所得光谱与真实光谱十分吻合。所得色谱峰面积与组分浓度线性关系良好。     

稀土离子Tb~(3+)与芦丁配合物的合成及其分子光谱表征

研究了稀土离子Tb3+与芦丁配合物的合成方法,利用红外光谱及差热分析等对合成的络合物进行了光谱表征,实验结果表明Tb3+与芦丁络合形成了新的配合物.     

含氟苯并咪唑及其衍生物的合成

合成了四个含氢苯并咪唑衍生物，并用红外光谱进行了表征，探讨了合成该化合物的条件和方法，结果表明，邻苯二胺与芳香酸反应无水 啶做溶剂、三氯氧磷作缩合剂以及与醛反应用甲醇作溶剂、铁氰化钾作氧化剂可得较高产率。     

新型分析试剂PV·PHHNS的合成及提纯

报道了聚乙烯醇缩-2-(对甲酰基苯基偶氮)-7-(2-羟基-5-磺酸基)-1.8-二羟基萘-3.6-二磺酸(简称PV.PHHNS)的合成、纯化及其鉴定.将小分子试剂酸性铬蓝K接到聚乙烯醇上,并采用纸色谱选择展开剂、薄层色谱确定展开剂及柱色谱提纯的方法成功的将其提纯,红外光谱显示酸性铬蓝K已成功高分子化.     

新型高活性环丙烷化催化剂(COD)·Cu(O_2CCF_3)的合成和结构测定

本文合成并分离得到了催化剂—个未见文献报导的高活性环丙烷化反应(COD)·Cu(O_2CCF_3),经红外光谱,顺磁共振谱,气相色谱和分子量测定确定了结构.     

苄叉丙酮实验的改进

将薄层色谱技术应用于苄叉丙酮的合成实验，通过薄层色谱对合成反应过程的监控，增加了实验的探究性，提高了学生分析问题、解决问题的能力．     

四碘荧光素合铂（Ⅳ）配合物的合成及其性质的研究

报导了四碘荧光素合铂配合物的合成方法。通过化学与元素分析确定了该配合物的组成，并对紫外光谱，红外光谱，热谱，摩尔电导及溶解性等性质进行了研究。     

二氧化碳与环氧丙烷共聚合成聚碳酸酯二元醇综合实验

围绕二氧化碳资源化利用设计了CO₂和环氧化物共聚合成聚碳酸酯二元醇综合实验，主要包括CO₂与环氧丙烷共聚反应和高分子产物表征分析两部分。首先，通过聚合温度、催化剂用量等核心反应参数的考察优化，并结合凝胶渗透色谱对共聚物分子量的分析，成功合成了分子量为5.2kg·mol^-1且分布较窄的聚碳酸酯二元醇产物。随后，借助红外光谱和核磁共振氢谱对共聚产物进行了表征，表明目标产物聚碳酸酯二元醇上同时含有聚碳酸酯和聚醚链节，其链段上CO₂摩尔分数为28.6%，而环状副产物碳酸丙烯酯的质量含量仅为7.3%，实现了CO₂与环氧丙烷的选择性共聚。     

分子印迹原理及其聚合物的合成

本文对分子印迹技术的基本原理，分子印迹聚合物的合成方法，结合机理和影响的因素进行了综述，并且介绍了分子印迹技术的最新研究进展，包括用于毛细管电色谱的印迹聚合物整体柱的合成，印迹聚合物微球的合成。表面模板印迹聚合物的合成，以及它们的性质研究等。     

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?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

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…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.