等环的

Annonaceous acetogenins are natural compoundsisolated so far only from Annonaceae and showed potential as anticancer,immunosuppressive, and pesticidal agents.

Tonkinecin是一个具C5羟基37个碳的单四氢呋喃环番荔枝内酯化合物，它对人类肿瘤细胞如肝细胞瘤、胃癌等强烈细胞毒性。

The system adopt new materials and new technology,including such equipment as the following:a stainless and carbon steel-fabricated converter and dice and doughnut-type gas heat exchanger with big-orifice baffles and wavy pipes,anodically protected stainless steel acid coolers and pipes,a heat-pi...

该系统在设计中积极采用新材料、新技术，成功地应用了不锈钢和碳钢相结合转化器、阳极保护不锈钢酸冷却器及管道、热管省煤器、新型大孔板波形管碟环式换热器、DCS控制系统等。2年多的生产运行情况表明，装置运行可靠，技术指标先进，生产控制指标达到或好于设计值，总转化率达99.87%，吸收率达99.99%。

The cathodic reduction behavior of arsenous acid(HAsO2) in sodium sulphate solution (pH=4.0) at a rotating Au-disk electrode has been investigated using electrochemical techniques including rotating ring-disk electrode and ac impedance spectroscopy,etc.

李红采用环盘电极实验和交流阻抗技术等研究了HAsO2在硫酸钠溶液(pH=4.0)中在金电极上的阴极还原行为。

Methods Among 14 cases of DGF, one was diagnosed as renal vein embolism, two as nephrotoxicity caused by CsA, six as acute tubular necrosis and five as acute rejection. The diagnoses were confirmed by clinical presentation, blood creatinine, color Doppler ultrasonography, and fine needle asperation biopsy, etc.

通过对发生DGF的14例患者临床表现、血肌酐、环孢素A血浓度、彩色多普勒超声、移植肾细针穿刺吸抽细胞学检查等分析，诊断移植肾静脉栓塞1例，CsA中毒性肾损害2例，急性肾小管坏死6例，急性排斥反应5例。

There are many reports related to the synthesis of azelaic acid, such as oxidation of oleate with nitric acid or ozone (9); oxidation of castor oil with potassium permanganate (10), as well as some other synthetic methods using 1, 9-nonadialdehyde〔11〕or 1,5-cyclooctadiene 〔12〕as the materials.

有关壬二酸合成的研究报道很多，例如用硝酸或臭氧氧化油酸〔9〕；高锰酸钾氧化蓖麻油〔10〕以及以1，9-壬二醛〔11〕、1，5-环辛二烯为原料〔12〕等方法制得。

Several attempts on epoxidation, oxymercuration and dihydroxylation of this bicyclic system were turn out to be unsuccessful.

尝试了环氧化、羟汞化等方法，但没有能够成功将C8-端烯转化成对应的叔醇。

Novel sodium 2-2-(alkylaryloxy-alkylamidoethanesulfonates (m+nAr-T, m, n: carbon numbers; Ar: aromatic nucleus; T: taurine) with high purity were synthesized through bromization, esterification, Fries rearrangement, Pd-catalyzed hydrogenation, Williamson reaction, and acylation, et al, using carboxylic acid, phenol and taurine as starting materials. The structures and purities were characterized.

以羧酸、苯酚和牛磺酸为原料，通过溴代反应、酯化反应、Fries重排反应、催化氢化反应、Williamson反应以及催化酰胺化反应等过程，首次成功合成并表征了系列结构明确的高纯度N-酰基牛磺酸钠(m+nAr-T，m、n为烷基链碳数，Ar为芳环，T表示taurine)。

The searching result indicated that many components such as 2-Heptenal,-, Hexadecanal, Octadecanal, Megastigma-4, 6, 8-triene and Megastig-matrienone were identified the first time in studies of aroma components of Chaenomeles fruits.

检索结果表明，试验检测出的-2-庚烯醛、十六醛、十八醛、甲酸叶醇酯、辛酸环己酯、4，6，8-巨豆三烯、巨豆三烯酮等多种化合物，在木瓜果实香气成分研究中尚属首次发现。

In order to analyze the airborne LiDAR data corresponding to single trees and stand heights in the forestry area, we set up samples to measure tree heights of Alnus formosana, Cryptomeria japonica, and Chamaecyparis formosensis in the Alishan area. We build the Canopy Height Model based on the data from the airborne laser scanning system. Single Tree heights were estimated by averaging the CHM values within a 0.5m radius, and six different sizes of sample stands (5×5, 10×10, 12.5×12.5, 15×15, 17.5×17.5, and 20×20) were set up to extract the average heights within the area as the calculated value.

本研究於阿里山地区设置样区，针对台湾赤杨、柳杉、红桧等树种进行立木树高之量测，配合该样区之空载光达影像资料，建立树冠高度模型(Canopy height model， CHM)，探讨空载LiDAR在森林地区对於单木树高与林分高的量测情形；单株立木高系以样区立木位置为中心，萃取0.5 m 圆形环框范围内之CHM平均值为其推估值；光达林分高则以6种林分面积(5 m×5 m、10 m×10 m、12.5 m×12.5 m、15 m×15 m、17.5 m×17.5 m、20 m×20 m)萃取范围内之CHM平均值为其推估值。

Since a large amount of epithermal deposits were discovered in circumpacific area in 1970s',the epithermal deposits have become a significant industrial type for hosting precious metals deposits and Cu,Pb,Zn non-ferrous metals deposits.

自20世纪70年代环太平洋地区发现大批浅成低温热液型矿床以来，浅成低温热液矿床业已成为贵金属矿床和Cu、Pb、Zn等有色金属矿床的重要工业类型。

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。