闪锌矿常压酸浸制取硫酸锌除铁工艺研究

研究了闪锌矿常压酸浸制取硫酸锌的除铁工艺 ,实验结果表明 ,闪锌矿酸浸液经过滤 ,调节溶液pH值为 1 5～ 2 0 ,控制温度在 90℃以上 ,加入NH+4以及少量活性炭 ,同时通氧气 ,反应 4h ,通过生成黄钾铁矾可以初步除去溶液中的铁 ;过滤分离黄钾铁矾 ,控制溶液温度为 80～ 85℃ ,pH值为 4,再加双氧水溶液深度氧化除铁 ,氧化 4h ,除铁率大于 99% ,溶液中最终铁离子浓度低于 0 0 1g L。

Discussion on Management Model of Medical Equipment Maintenance in Hospital

With the development of technology, medical equipment plays a more important role in the modern hospital. Medical equipment provides images, physiological results or other schematics of the patients to help doctors deal with the routines. It is also the major tool to the lab assistant in the clinical teaching and studies. It becomes one of a symbol of the technological level in modern hospital. The director of the hospital should establish an effi cacious management pattern to manage the medical equipment, so that it will be operated in good condition to insure the safety of the patients. Since the maintenance is an important part of medical equipment management, it is significant that the hospital should establish a system to fit for itself. The study reviews the issues in hospital medical equipment maintenance management, the development of the maintenance management model and the characteristics, as well as the status at home and abroad. The research has been fi nished by using literature research method, questionnaire survey method and data analysis method. Then we analyze the current status of hospital medical equipment maintenance management model to fi nd the problems. Based on the authentic and effective data from the survey, we can deduce the overview about the maintenance model in Beijing. The paper discusses the advantages and the disadvantages between the different model, and it makes suggestions on the follow aspects, such as system management, quality management, personnel management, cost management, information management perspective.

抗癫痫丛集发作新药—Nayzilam鼻腔喷雾剂

Nayzilam是一种新型苯二氮卓类抗癫痫(AED)鼻腔喷雾剂。鼻内给药方式提高了咪达唑仑的生物利用度,Nayzilam起效快、安全性好、便于携带。美国食品药品监督管理局(FDA)批准Nayzilam用于12岁及以上癫痫患者,包括频繁发作活动(如癫痫丛集发作、急性反复发作)间歇性、刻板性发作的紧急治疗。文中对Nayzilam鼻腔喷雾剂的作用机制、药代动力学、药物相互作用、临床评价和安全性等进行综述,旨在为临床用药提供参考。