The polarographic behaviour of some elements in concentrated calcium chloride solution : The development of a method for the determination of metallic impurities in calcium metal

The results of investigations discussed in this and previous papers are employed to develop a polarographic method for the determination of copper, chromium, lead, cadmium and manganese in calcium metal. Full details of the method are given and results and conclusions are presented.     

The polarographic determination of indium in zinc-base alloys : The determination of indium in zinc and in “lead-free” zinc alloys

The use of a potassium iodide base electrolyte for the separation of the polarographic steps due to indium and cadmium is discussed and theoretical data relating to the interference of the step due to lead with that due to indium are presented. An experimental study is given together with details of the attempted removal of lead interference. A method is presented for the polarographic determination of indium in zinc alloys, applicable when the lead concentration is small compared with that of indium.     

肿瘤冻融相变传热过程的数值模拟

本文建立了肿瘤组织多孔介质冻融相变传热的数学模型.采用显热容法研究模拟了冷热交替治疗过程中肿瘤组织中温度场分布以及冰晶增长和融化过程.研究结果表明,当冷刀进入组织以后,组织内会产生冰晶的生长.当冷刀的温度上升时,开始时在冷刀侧附近冰晶融化,出现一个冰晶融化的相界面;随着冷刀温度的上升,逐步出现两个冰晶融化的相界面.血液灌注率的存在使组织冻结速度变慢.