醛类

This paper discussed three methods of producting vinyl etherspreparation from acetylene ,dehydrohalogenation and acetals.

论述了乙烯基醚类化合物的三种主要制备方法乙炔法、脱卤化氢法和缩醛热分解法。

The days of attaining maximum anthocyanin were different from species. Flavour components with two grape species consisted of acetals, esters, alcohols, aldehydes, ketones etc, but there were significant difference between their kinds and content.

山葡萄与雷司令的香味成分由烷、醇、酯、醛、酮等组成，但二者在含量与种类上存在较大差异；发酵使潜在于原料中的许多香味成分表现出来，并产生许多新的醇、酯类物质，从而使酒的风味比汁更浓郁、复杂

The homocamptothecins with different substituted group in ring A and ring B can be obtained by the Friedlander condensation of the ring CDE with the acetals or 2-aminophenyl ketones.

以不同的缩醛与CDE环经Friedlander反应，可以得到A环上不同取代的高喜树碱类化合物，以缩酮或芳香酮反应，则可得到同时在A、B环取代的高喜树碱。

To find an improved conjugation method, our laboratory has developed a novel way to conjugate aldoses by amide-linkage with amine compounds via oxidative amidation using iodine as the appropriate oxidizing agent.

为了寻找可替代及改善连结之方法，我们实验室开发新的连接方法，利用碘促进醛醣氧化并与胺类化合物形成醯胺键。

A facile one-step method waspresented for the synthesis of N-fluoroalkanesulfonyl amidines 〓 inmoderate to good yield from the reaction of azides, ketones or aldehydes, andsecondary amines at room temperature.

在和无官能团取代的烯胺化合物的反应中，它发生了烷基迁移过程，而且利用该反应我们实现了由酮或醛，二级胺和叠氮一锅法合成脒类化合物〓。

The results showed that drought stress resulted in reduction of relative water content, protein content, chlorophyll content, corticoid content, net photosynthetic rate, transpiration rate, Fm, Fv/Fm, Fv/Fo and accumulation of proline content, SOD activity, POD activity, MDA content, water use efficiency.

通过测定不同处理条件下小麦代换系及其亲本叶片的生理、生化指标，结果表明干旱胁迫导致相对含水量、蛋白质含量、叶绿素及类胡萝卜素含量、光合速率、蒸腾速率降低，最大荧光、PSⅡ原初光能转换效率以及PSⅡ潜在活性降低，却导致细胞膜透性增大、SOD和POD活性增强、脯氨酸和丙二醛含量增加、水分利用效率增加。

Our primary hypothesis was that in low-renin patients with normal plasma K+ and aldosterone, a thiazide diuretic, bendroflumethiazide, would be as effectie as spironolactone in oercoming the Na+ retention and lowering blood pressure.

我们首要的假说是：对血清K+浓度及醛固水平正常的低肾素性高血压患者应用一种噻嗪类利尿剂……苄氟噻嗪治疗Na+潴留和降低血压同使用安体舒通同样有效。

For instance, those in the water quality of the influent are as below: excessive surface active matters, lipid compounds, shock of extreme pH values, very high alkalinity and temperature;inflow of phenol ＆ its derivatives, alcohol, organic acids, and heavy metals etc.

在进水水质方面有：过量表面活性物质和类脂化合物，过低或过高的pH值冲击，碱度过高，水温过热，酚及其衍生物、醇、醛、某些有机酸、硫化物、重金属及卤化物等致毒性底物的流入等等。

In the Purex process, the separation of plutonium from uranium is achieved by using reductants which can quickly and quantitatively reduce Pu to Pu.Up to now the reductant U-N2H4 is still used widely for separation of Pu from U in the rep...

目前动力堆乏燃料后处理中广泛采用的钚还原剂还是由肼支持的四价铀，而醛、肼、羟胺类有机无盐还原剂在Purex流程中的应用目前还停留在实验室研究阶段。

According to the positions of a carbonyl group in the hydrocarbon chain, carbonyl compounds divided to aldehydes and ketones.

P112根据羰基在碳氢链中的位置，羰基化合物分为醛和酮两类。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。