等环的

These polymers exhibit typical fibrillar morphology in the films. During heating in DSC, all the polymers substituted with alkoxy on phenylene show a nematic phase.

三、通过X-射线衍射、示差扫描量热仪和形貌表征等手段研究了苯环上取代基烷基、烷氧基长度对聚合物形貌、相转变过程等的影响。

In previous studies, Cyclooxygenase-2(COX-2) is believed to be linked with inflammations and tumors. But in recent reports, COX-2 is found to play important roles in osteoblastic mechanotransduction and in bone remodification and resorptions in some ways. It was found that mechanical stretches, such as hydrostatic forces and pulsating fluid flow, could increase the expressions of COX-2 mRNA and then prostaglandins, and activate many signal pathways in osteoblasts.

环氧合酶-2(cyclooxygenase-2，COX-2)以往被认为与炎症、肿瘤等有密切关系，近年研究发现它在骨骼重建、骨质吸收以及成骨细胞力学信号转导中发挥着重要作用，主要表现为机械牵拉、流体力、节律性液体流(pulsating fluid flow，PFF)等机械刺激均能引起成骨细胞COX-2高水平表达，进而引起前列腺素(prostaglandins，PGs)量的增加，激活成骨细胞内多条信号传导通路。

Those various kinds of wrought iron products are famous for their beautiful shape and high value for use.

三、铁艺产品主要有锻杆、矛头、环柱等配件和铁艺大门、围栏、护窗、居室家具等，产品种类齐全、制作精美有较高的观赏价值和使用价值而闻名于世。

It manufactures heterocyclic, such as pyrazine, thiazole, furan, pyridine and sulf-compounds with their ramifications; and pharmaceutical intermediates such as veratraldehyde, isovanillin, sufurol, diacetyl, acetoin, and 2, 5-dimethyl pyrazine.

食用产品有吡嗪、噻唑、呋喃、吡啶等杂环系列及含硫系列的合成香料化合物。医药中间体产品有：藜芦醛、异香兰素、硫噻唑、丁二酮、乙偶姻、2，5-二甲基吡嗪等。

Components were identified which represented 85.1% of the total essential oil by the silica gel column separately.Conclusion 10 components were identified which included Bicyclo (6,3,0) undeca-dien-3-one, 5,5-dimethyl ect. of the essential oil from Angelica acutiloba Kitag were analyzed for the first time.

结果超临界CO2萃取物为黄棕色油状物，得率为0.9%，用GC-MS联用技术从中鉴定出亚油酸乙酯、5，5-二甲基-双环（6，3，0）-1，7-十一烯-3-酮等30种成分，占挥发油总含量65.66%；萃取物经硅胶柱色谱分离纯化，从中鉴定出十八酸乙酯等11种成分，占总含量的85.1%。

Components were identified which represented 65.66% of the total essential oil includding 9.12-octadecadienoic acid, ethyl ester and ect. 11 components were identified which represented 85.1% of the total essential oil by the silica gel column separately.conclusion 10 components were identified which included bicyclo (6,3,0) undeca-dien-3-one, 5,5-dimethyl ect.

结果超临界co2萃取物为黄棕色油状物，得率为0.9%，用gc-ms联用技术从中鉴定出亚油酸乙酯、5，5-二甲基-双环（6，3，0）-1，7-十一烯-3-酮等30种成分，占挥发油总含量65.66%；萃取物经硅胶柱色谱分离纯化，从中鉴定出十八酸乙酯等11种成分，占总含量的85.1%。

The results showed that:1 78 volatile constituents were identified in the oil,which were mainly caryophyllene,1,5,9,9-tetramethyl-1,4,7-cycloundecatriene,germacrone,eudesmol and furfural,etc.2 The aroma quality and intensity of cigarette were improved,irritation was reduced,and a...

结果表明：①满山红挥发油中共鉴定出78种挥发性成分，主要有石竹烯、1，5，9，9四甲基-1，4，7环十一碳三烯、杜鹃酮、桉叶醇和糠醛等；②该挥发油具有提高B2F和C3F等香气质和香气量，降低刺激性和改善余味的作用。

These conditions included original material source, reagent ratio, base solutions, power of the microwave, reaction time and so on.2, Chitosan obtained from above was modified by Schiff base type macrocycles, which was prepared by the reaction of the reagents of salicylaldehyde, glacial acetic acid, hydrobromic acid, chloroepoxy propane and the others.

反应的最优化条件为：物料比1：25；反应时间20min；NaOH溶液浓度为50%；微波功率为450w。 2、利用原料水杨醛、氢溴酸、冰醋酸等采用四步法合成了含羟基的Schiff碱型大环化合物，然后以取代方法将此Schiff碱型大环化合物负载到壳聚糖上，得到具有特殊结构与性能的壳聚糖衍生物，并得到各中间产物的红外光谱图。

The ketalization of cyclohexanone and 1,4-butanediol catalyzed by the Hβ zeolite was studied.Effects of reaction time,mole ratio of reactants and amount of catalyst on the yield of ketal were studied.Results showed that the Hβ zeolite was an efficient catalyst for the synthesis of ketal.

研究了Hβ分子筛催化1，4-丁二醇与环己酮的缩合生成新型七元环缩酮的反应，考察了反应时间、酮与醇的配比、催化剂用量、催化剂重复使用等因素对醛与醇缩合反应的影响。

Including MPS, MBF, RP, HP, LM, E-type, such as the roll grinding mill, Mopan, Central and ball mill, cement mill in the liner, Bi board, at Wharf board, fans of the impact plate mill And the liner, and so on.

主要包括MPS、MBF、RP、HP、LM、E型等磨机的磨辊、磨盘、磨环及磨球，水泥磨中的衬板、萞板、隔仓板等，风扇磨中的冲击板及衬板等。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。