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Methods 4-Hydroxy- benzonitrile was treated with sodium hydrogen sulfide and anhydrous magnesium chloride in dimethyl formamide to give thioamide, which was then directly cyclized with ethyl 2-chloroacetoacetate without separation to give ethyl 2-(4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(2) in one-pot; then 2 was formylated with Duff reaction adopting hexamethylenetetramine in trifluoroacetic acid to give ethyl 2-(3-formyl-4-hydroxyphenyl)-4-methylthiazole-5-carboxylate(3); finally, the target compound was obtained by the treatment of 3 with hydroxylamine hydrochloride and sodium formate in formic acid.

采用"一勺烩"方法,以4-羟基苯甲腈为起始原料,首先与硫氢化钠和无水氯化镁在N,N-二甲基甲酰胺中反应,所得中间体不经分离,直接加入2-氯乙酰乙酸乙酯进行环合反应,得到2-(4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(2);然后通过六亚甲基四胺/三氟乙酸进行Duff反应,得到2-(3-甲酰基-4-羟基)苯基-4-甲基-5-噻唑甲酸乙酯(3);再经盐酸羟胺/甲酸/甲酸钠体系脱水得到目标化合物。

They perform a variety of fish to swim individuals and groups, such as movement, dance style is very rich, light blackfish, pomfret lights, light yellow croaker, light lobster, crab, and so lights; and made 10 Shoumian fish lamp, that is, gold Arowana, Yinlong fish, combined two-fish, fish head, as the first fish, unicorn fish (1), retained the ancient myth of a strong color.

他们表演各种鱼类的个体和群体的泅水等动作,舞蹈造型十分丰富,有黑鱼灯、鲳鱼灯、黄鱼灯、龙虾灯、螃蟹灯等等;并制成10条兽面鱼灯,即金龙鱼、银龙鱼、双合鱼、虎头鱼、象头鱼、麒麟鱼(1对)等,保留了古代浓厚的神话色彩。

We can find from the research that the IR and XRD spectrogram shows the exists of H_3BO_3 on the surface of cellulose;there is H~+ released form the solution and the complexation proportion of the boric acid-glucose in the solution is 1:1, the boric acid-mannitol is 1:2 and the boric acid-N-methylglucamine is 1:2;and the half experienced mathematics model experiment on analyzing PH shows that the cellulose's adsorption of the boracic acid is mainly chemical adsorption with a proportion of 1:1 while physical adsorption with the H~+ released during the reaction plays a role as assistance.

研究结果表明,通过IR和XRD谱图分析,表明纤维素上吸附了H_3BO_3;硼酸和葡萄糖、甘露醇、N-甲基葡萄糖胺在水溶中络合比分别为1:1,1:2,1:2,同时溶液中有H~+释放出来;应用半经验数学模型分析pH值-浓度吸附实验,表明纤维素对硼酸主要以化学吸附为主吸附比为1:1,以物理吸附为辅,反应过程中释放出H~+。

Air Sport, Bandy, Billiard Sports, Boules, Bowling, Bridge, Chess, Dancesport, Golf, Karate, Korfball, Life Saving, Motorcycle Racing, Mountaineering and Climbing, Netball, Orienteering, Pelote Basque, Polo, Powerboating, Racquetball, Roller Sports, Rugby, Squash, Surfing, Tug of War, Underwater Sports, Water Skiing and Wushu.

空中运动、草地曲棍球、台球、掷球、保龄球、桥牌、国际象棋、体育舞蹈、高尔夫球、空手道、合球、水上救生术、摩托车赛、爬山和攀登、篮网球、定向越野、回力球、马球、摩托艇比赛、短网拍墙球、滚轴运动、英式橄榄球、壁球、冲浪、拔河、水底运动、滑水和武术。

Breakfast standouts include banana pecan waffle with maple syrup and brown-sugar butter, mascarpone brioche French toast and eggs benedict topped with crab cakes.

代表性早餐包括加上枫叶糖浆和红糖牛油的香蕉合桃格饼、意大利奶酪蛋卷配法式烤面包,以及蟹饼铺水煮荷包蛋。

The dehydration technology of bischofite by butanol complexation distillation was studied by such methods as X-ray diffraction and elementary analysis.

采用X射线衍射及元素分析方法研究了水氯镁石的丁醇络合蒸馏脱水工艺。

Treatment and Observation Methods:(1) Treatment: The use of Digitalis Pill, Camas Digitalis Decoction, Licorice Barley Decoction and Unfetter Powder.

治疗和观察方法:(1)治疗方法:采用地合麦甘汤为主,结合肾阴虚为本病的主要因素而加重补肾药味,临床实际应用中再随症灵活加减药物,每日一剂,每日两次,水煎服,按病情所需的疗程完成服药。

The research consists of three parts: First is to prepare the five high-purity synthetic evaporite minerals powders, including gypsum, calcite, chalcanthite, nitratine and hydromagnesite, and to verify their phases and purities by XRD. Second is to conduct a series of thermal decomposition experiments of the powders by TGA at various heating rates and isothermal condition.

实验设计上可分为三部分,首先准备符合石膏、方解石、胆矾、钠硝石与水菱镁矿等五种矿物成分之试药等级粉体,再以XRD确认其矿物相是否正确;第二部分以热重分析仪进行等升温与等温条件热分解实验;最后以三种动力学方法分析拟合热重分析所得到的反应数据。

Calcium citrate is also used as a water softener because the citrate ions can chelate unwanted metal ions.

柠檬酸钙也可以用来作为水柔软剂,因为柠檬酸离子螯合有害金属离子。

We adopted that thinking paths are hydrothermal in situ of high photocatalyst efficiency photocatalyst and chemosynthesis bond for improving stability.

提出了采用水热法原位制备工艺研制开发具有高可见光催化性能的光催化剂,以及通过敏化剂与纳米TiO_2化学键合来提高光催化剂稳定性能的工作思路。

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