Conclusions vitrectomy for posterior segment intraocular foreign bodies combining with retinal detachment has many advantages : accurate , safety , less injury , high extraction rate and avoiding traumatic proliferative vitreoretinopathy , et al 结论眼后段眼内异物合并视网膜脱离,选择玻璃体手术具有直观、准确、安全、组织损伤小、异物摘出率高及去除外伤性玻璃体视网膜增生等优点。
The objective of this article is to connect the two methods to establish a new analysis examination method , the main characteristics of which are high medicine extraction rate , thorough getting rid of impurity , suiting soporific analysis and examination , and simple , quick operation 本论文的研究目的是将两种方法相结合,建立起一种药物萃取率高、杂质去除彻底,可适合安眠药物中毒、致死案件检验、以操作简便快速为主要特点的分析方法。
This paper is focus on the average nitrogen purity related to the air - separation production , and the function of improving oxygen extraction rate . analyzed the affecting factor of average nitrogen purity . and summarized the method of improve average nitrogen purity and its application to an air - separation plant 氮气平均纯度对空分生产中提高氧气提取率有重要的作用,分析了影响氮气平均纯度的几种因素,总结出空分装置提高氮气平均纯度的方法及应用。
A preparation method of genome dna in spirulina with high quality and high extraction rate for rapd analysis is studied . the high quality genome dna was obtained from the pelitomorphic spirulina about 10 % water content after lyophilized , isolated with ctab buffer and two - time - precipitation method 以含水量约为10的冷冻藻泥为材料,采用ctab缓冲液及二次沉淀提取法,建立了一个可获得较高纯度和得率、适用于rapd分析的螺旋藻基因组dna制备方法。
The extraction technology of carotenoid from arctium lappa l is under study in this paper , and the effects of factors like extraction temperature , extraction times , granularity of burdock dusts , and solid - liquid ratio on the extraction rate of carotenoid are examined through single factor and orthogonal experiment 摘要考察了牛蒡中类胡萝卜素的提取工艺,并通过单因素实验和正交试验研究了提取温度、提取次数、物料粉碎粒度、料液比等因素对类胡萝卜素提取率的影响。