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The side chain of thioacetic acid has been sythesized from the material of acetic acid via four steps, then synthesized the key intermediate of 2-hydroxypenem via displacement, P〓induced cyclization and hydrolyzed reaction from the material of azetidinone.

以羟乙酸为原料，经四步反应合成了侧链化合物硫基取代的羟乙酸，发生取代反应导入到经七步合成的单环氮杂环丁酮中，然后发生酰化，Wittig诱导环化，水解等五步反应合成关键中间体2-羟甲基青霉烯。

Syntheses of Grignard precursor, N - tert -butyl-4-chloro-piperidine, were accomplished via transamination with a quaternary ammonium piperidone or via addition of methylmagnesium chloride to an iminium ion.

氏体合成， N-叔丁基-4-氯哌啶、出自同一个经转氨酶哌季铵盐或透过增设methylmagnesium亚胺离子的氯化物。

Repeated surgeries were performed in 25 cases via transfrontal approach, 13 cases via transsphenoidal. Twenty-nine of 35 cases with visual interference were resolved, no improvement was achieved in 6 cases. Ten of 13 cases with PRL above normal level recovered within one week after surgery and no death was seen. 31 cases were followed up, and showed satisfying results.

再次手术经额入路25例，经蝶入路13例。35例有视觉功能障碍者再次术后29例有明显改善，无改善者6例；13例泌乳素增高者有10例在术后1周内恢复正常；无死亡病例。38例患者中有31例得到随访，效果满意。

Objective To evaluate the effect of transpyloric feeding on gastrointestinal nutrition in very low birth weight infants who were studied the effect of feeding via the TP route versus feeding via the intragastric feeding route on feeding tole-rance.

目的 通过比较经幽门喂养和经胃管喂养对极低出生体质量儿的喂养耐受性，探讨TP在VLBWI儿胃肠内营养中的应用价值。

Meanwhile, by either artificial chromosome doubling via colchicine treatment or spontaneous chromosome doubling via a union of unreduced gametes (2n) from T. turgidum-Ae.

同时，通过秋水仙碱对四倍体小麦-节节麦杂种进行染色体人工加倍或利用未减数配子自然加倍，我国科学家创制了一些新的人工合成小麦。

The sensitivity rates of HPV, TCT, HPV ＋ TCT, VIA, VILI, VIA ＋ VILI and colposcopy were 96.67 %, 89.47 %, 97.98 %, 56.57 %,36.36 %, 63.64 % and 39.39 %, and the specificity rates were 85.00 %, 96.91%, 86.97 %, 94.60 %, 96.23 %, 92.97 % and 98.14 % respectively.

结果2499名受检妇女中，2432名纳入研究（67名妇女因HPV或TCT阳性未行活检故未列入统计），其中HPV阳性妇女387例；TCT阳性妇女153例。

They may be administered via feed or water, by injection, or via timed-release boluses.

可能通过饲料或水、注射或通过定时释放的丸药施用抗生素。

The present invention features that fume after dedusting and heavy metal adsorption is fed via fume valve and fume-air heat exchanger to a sea water column desulfurizing system supported by a sea water supply system to eliminate SO2 and a defogging system to eliminate water content and fine dust before exhausted via draught fan and chimney. The slurry after desulfurizing and the dust is fed to an aerating, neutralizing and oxidizing system for exhaust.

其特点是，烟气经过除尘和重金属的吸附经烟气输送系统中所设烟气阀门和气气换热器进入有海水供给系统支持的海水液柱脱硫系统脱除二氧化硫，脱硫后的烟气经除雾系统去除水分和细灰再经引风机通过烟囱排出，脱硫反应后的浆液与脱除的灰尘送至曝气中和氧化系统，达标后通过管道排出。

Air, water and soil pollution is brought about with the development of animal husbandry in our country, but due to various nutrition components in feces of livestock and poultry, the excrement can be comprehensive utilized. The livestock feces can be used as fertilizer via composting, as feed via ensiling, dehydration drying or biological treatment; it also can be used to produce marsh gas by anaerobic fermentation.

我国的养殖业迅速发展的同时也对空气、水体、土壤等环境造成污染，但粪便中的各种营养成分决定其可以进行综合利用，包括通过堆肥生产肥料，通过青贮、脱水干燥、生物处理等手段生产饲料，进行厌氧发酵生产沼气等。

Methods:Twenty-four patients with CTD during the corticosteroid therapy suspected of pulmonary infections according to the clinical manifestations and X-ray features were enrolled into the study of etiological sampling via FB randomly and prospectively.Etiological diagnosis via common expectorated sputum from 20 of them was designed as self control group.

对确诊为结缔组织疾病且应用糖皮质激素治疗，临床症状及胸部X线表现拟诊为肺部感染24例，采用随机前瞻性的经FB病原学采样研究，同时对其中的20例行普通咳痰病原学采样诊断的对比观察。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。