脱水剂

An innovative process for the production of high molecular weight poly(L-lactic acid) was presented, featuring solid-state polycondensation of L-lactic acid in a closed system with a dehydrant to remove water selectively.

研究在真空密闭、存在脱水剂的条件下聚乳酸固相缩聚工艺的可行性，得到了分子量达25万的聚乳酸；实验研究了催化剂浓度，预聚体粒度和反应时间对缩聚过程的影响，表明降解副反应仍然是控制聚乳酸最终分子量的重要因素。

Results 15 eyes of peripheral retinal dry hole and peripheral retinal degeneration were treated only by laser treatment and successful rate was 100%;10 eyes with local rhegmatogenous retinal detachment,were initially treated with herbal dehydrant,followed by laser treatment and successful rate was 80%;2 eyes failed due to the traction of vitrous were successfully treated with the aids of local pad;141 eyes with retinal detachment were treated by scleral buckling combined with krypton laser and success rate was 96.5%,5 eyes failed due to the traction of vitrous were successfully treated with the aids of vetroretional operation;27 eyes with complicated retinal detachment were treated by vetroretional operation,followed by intro????and post????

结果 视网膜周边干性裂孔和视网膜周边变性单纯用氪多波长激光治疗15眼，成功100%；局限性孔源性视网膜浅脱离10眼，先使用脱水剂、卧床休息、单眼加压包扎等措施，而后行激光治疗，成功率80%，2眼因玻璃体有牵引结合局部垫压术后成功；巩膜外扣带术后激光封孔141眼，成功率96.5%。5眼因玻璃体有牵引行玻璃体手术后眼内激光封闭裂孔成功；复杂性视网膜脱离经玻璃体切割手术，术中及术后激光封闭裂孔27眼，成功100%。

Results 15 eyes of peripheral retinal dry hole and peripheral retinal degeneration were treated only by laser treatment and successful rate was 100%;10 eyes with local rhegmatogenous retinal detachment,were initially treated with herbal dehydrant,followed by laser treatment and successful rate was 80%;2 eyes failed due to the traction of vitrous were successfully treated with the aids of local pad;141 eyes with retinal detachment were treated by scleral buckling combined with krypton laser and success rate was 96.5%,5 eyes failed due to the traction of vitrous were successfully treated with the aids of vetroretional operation;27 eyes with complicated retinal detachment were treated by vetroretional operation,followed by intro-and post-operation,and success rate 100%.

结果 视网膜周边干性裂孔和视网膜周边变性单纯用氪多波长激光治疗15眼，成功100%；局限性孔源性视网膜浅脱离10眼，先使用脱水剂、卧床休息、单眼加压包扎等措施，而后行激光治疗，成功率80%，2眼因玻璃体有牵引结合局部垫压术后成功；巩膜外扣带术后激光封孔141眼，成功率96.5%。5眼因玻璃体有牵引行玻璃体手术后眼内激光封闭裂孔成功；复杂性视网膜脱离经玻璃体切割手术，术中及术后激光封闭裂孔27眼，成功100%。

The disubstituted ureas and the catalyst could be separated by addition of water and the catalyst could be reused without deactivation.

新型高效的菲咯啉钯-离子液体含氮化合物羰化催化剂体系，以苯胺为反应物时该体系的转化频率可以达到6000mol/mol/h；氢氧化铯-离子液体催化剂体系，可以在不加入化学计量脱水剂的条件下活化二氧化碳与脂肪族胺反应得到二取代脲，反应结束后可以通过加入水实现产品和催化剂体系的分离，催化剂体系可以重复使用。

Based on the development of homogeneous gold complex catalyst, the polymer immobilized nano-gold catalyst was also prepared and used for oxidative carbonylation of amines or activation of carbon dioxide to carbamates and disubstituted ureas without addition of any co-catalyst and dehydration agents with greatly enhanced catalytic activity (TOF≈3000mol/mol/h).

同时，纳米金可以催化活化二氧化碳与脂肪族胺反应制备二取代脲，避免了传统上二氧化碳活化所大量使用的脱水剂，是当前文献报道最高效的胺与二氧化碳反应的催化剂体系（TOF≈3000mol/mol/h）。

RESULTS: Two cases which were open fractures were operated at first time. Diplopia and ocular region anomaly were not catch out. All of the 78 cases were treated by conservative treatment first. Conservative treatment was involved high doses of corticosteroid and the use of dehydrating and neurotrophy agents etc. In 41 cases（52%） diplopia completely disappeared and partly disappeared, the enophthalmos was less than 2 mm,and ocular region anomaly reduce.

结果：开放性骨折2例行1期手术，术后无明显复视和眼球凹陷。78例早期均先采用保守治疗，保守治疗包括使用大剂量皮质类固醇激素，高渗脱水剂、神经营养药物等，有41例复视消失或减轻，眼球内陷小于2mm，保守治疗的总有效率为52%。

Using phenylamine and acetic acid as raw materials,cyclohexane and toluene-p-sulfonic acid as dehydration and catalyst respectively.

以苯胺和冰醋酸为原料，环己烷为脱水剂，对甲苯磺酸为催化剂，采用正交实验法，探讨了乙酰苯胺合成的适宜工艺条件。

This paper introduced the method that the thiabendazole was synthesized by polyphosphoric acid as solvent.

介绍多聚磷酸作为 4 羧酸噻唑与邻苯二胺溶剂兼脱水剂，合成噻苯咪唑———食品保鲜剂的方法。

Results The high incidence rate of hematoma enlargement was high in the shape of hematoma shape irregularity cases, thalami hemorrhage cases, vascular hypertension cases, using large dose mannitol in super-early period cases.

结果 血肿形态不规则、丘脑部位出血、血压过高超早期应用大剂量甘露醇等脱水剂病例血肿扩大发生率高。

It is also an oxidizing (see oxidation-reduction) and dehydrating agent and chars many organic materials.

也是一种氧化剂和脱水剂，能碳化许多有机物。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。