提高注射法导入外源基因棉铃成铃率的技术研究

对采用注射法导入外源基因的棉铃,在激素种类、不同生态条件、结铃部位、结铃性、整枝方式等方面进行分析,探讨了导入棉铃落铃机理和提高导入棉铃成铃率的技术途径。     

128例舌下腺囊肿临床治疗体会

目的:评价舌下腺囊肿的治疗方法及效果比较.方法:分别应用2%碘酊注射法、单纯囊肿切除术及"囊肿+舌下腺摘除术"治疗128例舌下腺囊肿患者.结果:2%碘酊注射法治疗34例,单纯囊肿切除术治疗11例,"囊肿+舌下腺摘除术"治疗83例,治愈率分别为64.7%、36.36%、100%.结论:通过三种治疗方法的效果比较,作者认为对于全身情况良好,无手术禁忌症的舌下腺囊肿患者,均主张采用"囊肿+舌下腺摘除术".     

穴位注射法治疗家畜泄泻有奇效

泄泻是指排便次数增多，粪便稀薄，清浊不分，俗称拉稀。     

光卤石中高含量镁的自动快速测定

提出一种自动快速测定商含量镁的新方法。以偶氮氢膦Ⅲ为显色剂，用流动注射法注入和稀释样品，在ＰＨ为１０．２的硼砂－氢氧化钠介质中，镁含量在０－５０ｍｇ／ｍｌ范围内有良好的线性关系，分析速度为１５个样／ｈ，大量钾钠及微量钙不干扰测定。该不于光卤石中的２０％的ＭｇＣｌ２的测定，其结果与ＥＤＴＡ滴定法非常一致。     

流动注射法和纳氏试剂法测定地表水中氨氮的比较研究

纳氏试剂法是国家的标准方法,流动注射法是近年来发展起来的一种分析方法,已在国外得到广泛运用,但国内的实际应用还较少。本文对分光光度法和流动注射分析法测定水中的氨氮进行了比对实验,结论如下：纳氏试剂法检测范围0.02～2.0mg/L,检出限0.02mg/L;流动注射法测定水样中的氨氮,检测范围0.01～10.0mg/L,检出限0.001mg/L,分析速率50个样品/h;流动注射法法操作简便、线性好,灵敏度、精密度、准确度都能符合分析工作要求,分析速度快、试剂和样品消耗少,是一种灵敏度高、选择性好、环境友好的测定方法,该方法是未来发展的趋势。     

Removal of NO<Subscript><Emphasis Type="Italic">x</Emphasis></Subscript> by radical injection

Removal of NOx(DeNOx, NOx is the total of NO and NO2) from flue gas by radical injection has been investigated .the discharge characteristics were examined and the steady streamer corona was acquired hy adjusting the nozzle gases properly. It was Found that an increase in the voltage resulted in a decrease in the NO concentration and the concentration of the NO2 increased at tow voltages but decreased as the voltage rose to a certain level. The DeNOx efficiency increased as the applied voltage rose and reached a maximum of 70% when the voltage approached the breakdown voltage. The hypothetical mechanism of NOx removal suggested that the radicals formed in the discharge process converted the NO and NO2 into acidic species. The Monte Carlo method was used to calculate the rate coefficients and the productivity of the radicals, and then the concentrations of both NO and NO2 and the DeNOx effielencies were calculated with chemical kinetics. The calculated DeNOx efficiencies were coalparable with the experimental DeNOx efficiencies at low voltages, but were lower at high voltages.     

常用注射法说课稿的设计

说课,就是教师备课之后讲课之前（或者在讲课之后）把教材、教法、学法、授课程序等方面的思路、教学设计及其依据面对面地对同行（同学科教师）或其他听众作全面讲述的一项教研活动[1]。本文试设计了《常用注射法》的说课稿,取得了很好的教学效果。