芳香

The calculated results show: the ground state structures of PtNi5, Pt2Ni4 and Pt3Ni3 clusters are quadrangular bi-pyramid, and Pt4Ni2 and Pt5Ni clusters are triangular bi-pyramid with hat and triangular pyramid with quadrilateral, respectively. From the point of view of thermodynamics, PtnNim clusters are stable because of the negative enthalpy of formation; the positive NICS of PtNi5 clusters show anti-aromaticity, The negative NICS of Pt2Ni4 and Pt5Ni clusters show aromaticity. The number of the IR absorption peak of Pt3Ni3 is the most. The IR and raman absorption peak of PtNi5 , IR of Pt2Ni4, Raman of Pt3Ni3 and Pt4Ni2 have only one. The absorption peak of Pt5Ni appears in the bigger frequencies only, and is zero almost in the small frequencies.

研究结果表明：PtNi5、、Pt2Ni4、Pt3Ni3团簇的基态结构都为四角双锥结构，Pt4Ni2 和Pt5Ni团簇的基态结构分别是戴帽三角双锥和三角锥戴四边形结构；PtnNim团簇的生成焓都为负值，表明团簇在热力学上是稳定的；由NICS值可得，PtNi5团簇具有反芳香性，Pt2Ni4和Pt5Ni团簇具有芳香性；从光谱分析来看，Pt3Ni3团簇的IR较强吸收峰的个数最多，PtNi5团簇的IR和Raman、Pt2Ni4团簇的IR、Pt3Ni3和Pt4Ni2团簇的Raman只有一个强吸收峰值，Pt5Ni团簇的峰值只出现在频率较大的位置，频率小的位置几乎为零。

Creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil .

北美东部的一种平铺式灌木，花白色钟状，果实红色、芳香，叶光亮、芳香，产生一种冬绿油。

Creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil.

北美东部的一种平铺式灌木，花白色钟状，果实红色、芳香，叶光亮、芳香，产生一种冬绿油。温特格林是个不诚实的小无赖，专喜欢制造矛盾。冬绿油；水杨酸甲酯

Two kinds of aromatic and fatty xanthate salts were synthesized and their extracting qualities to Pd in waste catalysts were studied.

合成了 2种芳香族黄原酸盐及脂肪族黄原酸盐，并研究了它们对废催化剂中钯及铂的萃取性能，结果发现芳香族黄原酸盐对贵金属钯的萃取效果明显优于脂肪族黄原酸盐。

It is ofreactions of aromatic rings such as acylation, alkylation, etc..

具有芳香性，在环上能进行酰化反应，烷基化反应等芳香环所具有的反应特性。

In this system, the allylation was selectively toward aldehyde in the presence of ketone; the allylation squinted toward aliphatic aldehyde in the presence of aromatic aldehyde.

该方法不仅对于醛和酮具有很高的化学选择性，而且对于芳香醛和脂肪醛也有很好的选择性，当存在芳香醛时，脂肪醛优先发生烯丙基化反应。

Fresh and natural texture, improve the renew of the skin, moisture and aromatize, full of the fragranc

质地清爽自然，促进肌肤再生，令肌肤水润、芳香，充满着让人不由亲近的芳香魅力，适合任何肤质。

Moreover,the selective oxidation of primary and secondary alcohols to corresponding carbonyl compounds with the multinuclear copper complexes Cul-Cu4 as catalysts have been conducted using TBHP and O_2/TEMPO,respectively.Among them,the copper complex Cu3 showed the best performance.On the performances of the two classes of oxidants,benzylic and heterocyclic alcohols could be effectively oxidized to carbonyl compounds.Specifically,the secondary alcohols could be effectively oxidized to ketones with excellent selectivity up to 100%in the presence of TBHP and the allylic alcohols could be effectively oxidized to aldehydes in the presence of O_2/TEMPO system.

实验结果还表明，在TBHP或O_2/TEMPO存在下，各配合物催化剂均能使各种取代芳香伯/仲醇以及杂环醇等以不同程度的转化率和选择性转化成相应的醛或酮，其中，配合物Cu3在O_2/TEMPO存在下可使苯甲醇和烯丙醇等以较高转化率和近100%的选择性转化成相应的醛，而对其它芳香醇和脂肪伯/仲醇等的催化性能则较差；在TBHP存在下，配合物Cu3则可使1-苯乙醇和其它仲醇以较高转化率和近100%的选择性转化为相应的酮，但对各类其它伯醇选择氧化的性能相对较差。

This paper summarizes microorganisms for chloromatics degradation,the catabolic pathway,and the key enzyme and its molecular genetics .

介绍了降解氯代芳香化合物的微生物，综述了氯代芳香化合物的主要降解途径，以及起关键作用的酶和分子遗传学等方面的研究进展

As the results, carbon blacks, chrysene and benzopyrene had similar effect on ICAM-1 regulation with motorcycle exhaust particles. It was supposed that three of them had an important role in motorcycle exhaust particles caused inflammatory response.

并且利用纯黑碳微粒与多环芳香烃类来探讨废气悬浮微粒所造成的影响成分为何，结果发现黑碳微粒和多环芳香烃中的benzopyrene与chrysene具有和MEP相类似的影响与反应，推估这三种成分在MEP所造成的发炎反应中应占有著一定的地位。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。