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In order to improve the yield and the stablity of the carbyne complexes,thiophenol group was introduced to connect to the tantalum center of compound 1.And "one pot" ylide transylidation reactions were carried out and the carbyne complexes(12-19) were also obtained.

为了提高卡拜化合物的产率和稳定性,我们在金属钽配合物(1)上引入供电子基团,采用"一锅煮"法与叶立德发生转化反应,同样也可以得到金属钽的膦基卡拜化合物(12-19)。

The effects of shape, size of TiO〓 particles on the photocatalytical properties were studied.

设计了可方便测定量子产率的光解水催化反应装置,考察颗粒形状、大小等因素对光解水制氢催化作用的影响。

Discuss the method of synthasizing the polybasic hydroxyethoxy benzene by thereaction of polybasic phenol with 2-chloroethanol in the ethanol solvent under the conditionof phase transter catalyst, which raises the product yield and shortens the reaction time.

以多元酚为原料,乙醇做溶剂,在相转移催化剂条件下与氯乙醇作用,合成多元羟乙氧基苯的方法,提高了产品产率,缩短了反应时间。

Treatment of N-p-tolylsulfonylindole 1 with acetyl chloride in dried dichloromethane gave the title compound, N-p-tolylsulfonyl-3-acetyl-indole 2 C17H15NO3S, M(subscript r=313.36 in 89% yield. Single-crystal structure of 2 was determined by X-ray crystallography.2 crystallizes in the triclinic system, space group P-1 with a=10.0264(13), b=12.5913(16), c=14.1621(18)?

N-对-甲苯磺酰-吲哚(1)在二氯甲烷中与乙酰基氯反应得到产率为89%的N-对-甲苯磺酰-3-乙酰基-吲哚(2)(分子式:C17H15NO3S,分子量:313.36),用单晶X-射线衍射方法测定了2的晶体结构并表明:属三斜晶系,空间群为P-1,单胞参数为a=10.0264(13),b=12.5913(16),c=14.1621(18)?

Methods ELISA assay was used to measure the concentrations of calprotectin in feces of 30 UC patients and 20 healthy controls. The disease activity of UC was determined by Truelove Witts histological criteria.

选取溃疡性结肠炎患者30例和正常对照20例,采用ELISA方法测定粪便中钙卫蛋白含量,溃疡性结肠炎组织学严重程度根据Truelove Witts标准判断,与红细胞沉降率和C反应蛋白进行比较

It was found that the selective photoreductionreaction of this uranyl compound could take place under pulsed IR laser irradiation and the rate ofphotoreduction depended on the frequency, energy fluence and numbers of pulses of laser.

用TEA-CO_2激光研究了室温下固体的甲酸铀酰钠的红外光化学反应,发现该化合物在脉冲红外激光照射下可产生选择性的光化还原反应,其光化还原率与激光频率、能量密度和脉冲数有关。

Temperature, space velocity, ratio of propane to hydrogen, purge gas rate, membran...

推算出膜的渗透率及渗透选择性的变化对丙烷脱氢反应的影响,为无机膜的设计和制备提供了依据

Previous studies have shown thatlymphocytes from patients with malig-nant disease, when encountering abasic protein fraction isolated fromhuman glioma, display a slowingeffect to macrophage electrophoreticmobility.

对用人脑胶质瘤碱性蛋白免疫的38只豚鼠和23只对照组豚鼠进行了巨噬细胞电泳试验,其巨噬细胞电泳减缓率免疫组为6.13±1.06%,对照组为0.96±0.90%;经统计学处理,两组间有显著区别,表明GBP能激发豚鼠的细胞免疫反应性。

The amount of pesticide residues was determined by measuring the light absorbency of the sample liquid after inhibition reaction.

研究了吸光度随反应时间的变化关系、温度对酶活性的影响及农药残留浓度与酶抑制率的关系。

The influence of reaction conditions on the absorbency was discussed.

研究了反应条件对产品吸水率的影响,利用傅里叶红外光谱、X射线衍射、偏光显微镜对接枝共聚物进行表征。

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In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国,慢性酒精中毒,肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题,你可以随时联系我。

Very pretty, but the airport looks more fascinating The other party wisecracked.

很漂亮,不过停机坪更迷人。那人俏皮地答道。