良好地

objective to determine the contents of residual acetone in acetoacetic ester,the raw material for the synthesis of edaravone, by gas chromatography.methods sample solution was injected on a gdx column (0.18 mm～0.25 mm) with nitrogen as the carrier gas.the residue was calculated by the external standard method.results the linearity was good over the range of 25 μg/ml～400 μg/ml,with the correlation coefficient of acetone being 0.996 and the average recovery 96.8%.conclusions the method was proved to be simple,rapid,practical and highly sensitive.it is an efficient method for the quality control of acetoacetic ester.

摘要］ 目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。方法：采用固定相为二乙烯苯乙基乙烯苯型高分子多孔小球（直径为0.18 mm～0.25 mm），氮气为载气，用外标法测定乙酰乙酸乙酯中残留丙酮的含量。结果：该方法在丙酮浓度范围在25 μg/ml～400 μg/ml内呈良好的线性关系，响应曲线相关系数为0.996，平均回收率为96.8%。结论：本法简便，快速、实用，灵敏度高，可有效地用于乙酰乙酸乙酯的质量控制。

Both the size and quantity of acicular Al4C3 increased with energy input, and the shape of gas pore changed from circular to angular.

通过在工件之间添加一嵌条进行对接焊，较好地控制了Al4C3的形成，得到了性能良好的接头。

First, since the GRT is linear and addible, the dissertation proposes the parallelized implementation of Generalized Radon Transform. The implementation is based on the GRT Cartesian space's decomposition.

基于广义Radon变换具有良好的线性可加性，本文提出一种以分解图像空域笛卡尔空间为基础的广义Radon变换并行化实现，从而使得广义Radon变换能有效地运用于实际应用中。

Aromatic and aliphatic aldoxime s could be efficiently converted into the corresponding carboxylic acid esters by treatment aldoxime s with an alcoholic solution of 30% hydrogen peroxide in the presence of catalytic amounts of polystyrene-bound phenylseleninic acid.

在30%双氧水和醇组成体系中，聚合物负载的苯亚硒酸试剂可有效地促进过氧化氢氧化肟转变成羧酸酯；相应伯醇和仲醇的羧酸酯的产率中等到良好，但在含叔醇的体系中没有相应的羧酸酯生成。

The results indicate that intravenous CP may produce rapid hemodyn amic and clinical inprovement and be well tolerated in cardiac patient s with serious or emerqent conditions from heart tailure.

结果表明静脉输注CP能较快地改善重症和急症心衰病人的血液动力学和临床状态，耐受性良好。

The first passage of YS-MSCs which grew in good condition was obtained, and adipogenic differentiation of YS-MSCs was induced by dexamethasone and insulin, and angioblast was induced by vascular endothelial growth factor and basic fibroblast growth factor.

取生长状态良好的第1代细胞，以地塞米松、胰岛素定向诱导卵黄囊间充质干细胞向脂肪细胞方向分化；以血管内皮生长因子和碱性成纤维细胞生长因子体外诱导其向血管内皮细胞方向分化。

"Apraclonidine, a selective alpha-2-agonist, was developed to lower intraocular pressure and minimize the systemic side effects associated with the use of its parent drug, clonidine," write Patrick Watts, MBBS, MS, from the University Hospital of Wales in Cardiff, United Kingdom, and colleagues."An investigation of the site of action of apraclonidine incidentally uncovered a reversal of anisocoria in patients with absent sympathetic innervation of one pupil due to its alpha-1-effect on a pupil with denervation supersensitivity.... The easy availability of apraclonidine, its mild alpha-1-agonist activity, and its hitherto benign safety profile has encouraged its use as a first-line drug in the diagnosis of oculosympathetic paralysis."

英国加地夫市威尔斯大学附设医院的外科学硕士Patrick Watts及研究同仁指出，Apraclonidine是一种选择性的α-2-拮抗剂，是用来降低眼内压，并减少其母系药物降保适使用上的相关全身性副作用；在一项针对apraclonidine作用位置的研究中，因其单侧瞳孔神经切除之α-1-效应，而附带提出单侧瞳孔无交感神经支配患者之瞳孔大小不等为可逆转，apraclonidine之高可利用率，其轻微的α-1-拮抗活性，以及迄今良好的用药安全档案，更强化其作为视交感神经瘫痪诊断第一线药物的使用率。

We aimed at the tenet of "speciality, integrity and carefulness" to provide products and service for both new and old clients, especially for those in the construction fields----Pay more attension on welding techique projects and scheme of practice about atomatic production line at the same time.

我们一贯遵循客户满意是公司的生存之源，与客户共赢是公司的营销原则。真诚地希望与新老客户进行广泛的交流与合作，我们提供的不只是优良的产品，更有实用的焊接技术和良好的售后服务。

The results show that nbutanol azeotropic distillation can effectively prevent the formation of hard agglomerates in drying process,and good dispersed spherical nanopowders can be obtained,with an average size of 50 nm.

结果表明，用正丁醇共沸蒸馏能有效地防止干燥过程中颗粒间的硬团聚，获得分散性良好的粉体，其平均粒径约为50 nm，形貌为球形。

Broch has finished lots of uptown programming items recently along with the continual development in Chinese realty market. Broch kept nicer symbiosis with many great realty companies in Shanghai and Zhejiang Province. Broch's service was praised by the property owner.

由于近两年全国房地产市场持续发展，我事务所在近期完成了大量的住宅区规划项目，与上海及江浙等地的多家大型房地产开发商保持良好的合作关系，设计成果得到业主的称赞。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。