机器的进化

<正>来自美国化学会2014年秋季会议的一篇报道称,化学家们正在尝试构建一种可以合成任何化合物的神奇机器——"当代炼金术士"有机化合物自动合成机,悄然开启了一场化学界的机器人大赛。LHASA算法、Chematica系统、ELN格式让人印象深刻,自动合成机装上智能的化学大脑才是成功的关键。化学家们对此充满信心,化学研究与人工智能的亲密接触或将带来新的化学革命。科学家对人工智能的研究始于上世纪40年代控制论出现以后,1956年达特茅斯会议算是一个里程碑。会议由     

一类新的4—取代胂酸型变色酸偶氮多卤显色剂与钍显…

本文研究了１１种新型４－取代胂酸型显色剂与钍的显色反应，该组试剂与钍显色，具有对比度大，显色酸度高，灵敏度好等特点，对钍的回收试验结果显示，该方法准确，可靠。     

取代基效应对有机化合物性质的影响

取代基效应是有机结构理论的重要组成部分。取代基效应对有机化合物的物理性质、化学性质和反应活性等都有着重要影响,了解有机化学中的取代基效应及其在有机化学中的作用方式,对于学习有机化学及应用有机化学知识都至关重要。     

有机胂化合物的研究

报道了溴化α－呋喃亚甲基三苯的合成及其与芳醛、酮的相转移催化反应，获得高产率立体专一性的烯烃衍生物。     

黄酮类化合物的质谱研究

黄酮类化合物的质谱研究陈俊杰，李裕林（厦门大学化学系）（兰州大学有机化学研究所）黄酮类化合物是植物最普通的成分之一，是色原烷或色原酮的衍生物．其结构特点是具有Ｃ６－Ｃ３－Ｃ６的基本骨架，并可根据中间吡喃环的不同氧化水平和两侧Ａ、Ｂ环上连接的各种取代基...     

HPLC法测定可立泰的含量

可立泰国这有级新药，对厌氧菌，滴虫等引起的口腔，男女泌尿生殖系统引起有特效，主药为替硝唑，化学名为１－（２－（乙基磺酰基）－乙基）－２－甲基－５－硝基咪唑，由于采用光谱法测定含量较烦琐，笔者采用高效液相色谱法对替硝唑进行了分离，并用内标法测定其含量，方法准确，可靠，重现性好。     

A novel integrated UV-biofilter system to treat high concentration of gaseous chlorobenzene

A novel integrated UV-biofilter system using UV reactor as the pretreatment process was setup to treat high concentration of gaseous volatile organic compounds （VOCs）. Another control biofilter without the UV pretreatment was also established to compare the performance of the two systems. Chlorobenzene was selected as a model compound. The two systems were operated in parallel under different inlet chlorobenzene concentrations （500, 1000, 1600, mg· m^-3）. The experimental results indicate that the integrated system could eliminate chlorobenzene completely （100% removal efficiency） at the inlet concentration of 500 mg· m^-3, whereas only 60% removal efficiency was achieved for the control biofilter. Also the elimination capacity for the organic carbon of the integrated system was much higher than that of the control biofilter. On the basis of intermediates analysis by Ion Chromatography and Gas Chromatography-Mass Spectrometry, the UV pretreatment has been proven to be able to enhance the performance of the following biofilter by transferring the recalcitrant target to some more biodegradable and soluble organic products （such as formic acid and chlorophenol）. Furthermore, the produced ozone, a harmful by-product from UV photo-degradation, could be easily eliminated by the following biofiltration process.