The drying operation is often the final step of a manufacturing process. Indirect drying will be discussed in this section; it is the process of removing liquid by conductive heat transfer. Sometimes drymg is apart ofthe manufacturing process itself, as in the case of seasoning oftimber or in paper making, but generally, the reasons for carrying out a drying operation are:

3.0 BIOREACTORS FOR PLANT CELL TISSUE AND ORGAN CULTURES fly Shinsaku Takayama) 3.1 Background of the Technique-Historical Overview HaberlandtL'] first reported plant cell, tissue, and organ cultures in 1902. He separated plant tissues and attempted to grow them in a simple nutrient medium. He was able to maintain these cells in a culture medium for

Fermentation and Biochemical Engineering Handbook microorganisms, mammalian cells, plant cells, and tissue. It is our sincere hope that the reader will find this chapter helpful in determining the best conditions for cultivation and the collection of scale-up data. Hopehlly, this knowledge will, in turn, facilitate the transformation of worthwhle research

Muscles Active while Lengthening Consider the example of ordinary exercise, lets say one of the running events in the Olympics. Muscle functions to stop the motion of the athlete as often as it does to start it. When a load larger than isometric tetanus tension To is applied to a muscle in a tetanic state of activation, the muscle lengthens at a constant

Common, everyday water is a major consideration in a pharmaceu￾tical plant. The final product or any of its intermediate materials can only be as contaminant-free as the water available at that stage. Water may be an ingredient or used principally to wash and rinse product contact components and equipment. Water is also used to humidiethe air, to generate clean steam for sterilization, to cool or heat, as a solvent, for drinking and sanitary uses, etc. To better control this critical media

药理学研究药物与机体相互作用规律及其原理,是生物工程专业本科生的专业选修课。 本课程的教学目的是:通过教学使学生掌握药理学的基本理论和基本知识,着重培养学生的 自学能力、科学分析综合能力及科学思维方法。主要任务是:在着重讲述药效学、药动学等 药理学基本理论的基础上,简要阐述各类器官系统的常用药物及药理,使学生对药理学的概 貌具有比较全面的认识

Crystallization is one of the oldest methods known for recovering pure solids from a solution. The Chinese, for example, were using crystallization to recover common salt from water some 5000 years ago. The perfection and beauty of the crystal which fascinated the early tribes now leads to a product of high purity and attractive appearance

Often in multiple-effect evaporators the concentration of the liquid being evaporated changes drastically from effect to effect, especially in the latter effects. In such cases, this phenomenon can be used to advantage by staging one or more of the latter effects. Staging is the operation of an effect by maintaining

“Evaporation is the removal of solvent as a vapor from a solution or slurry. The vapor may or may not be recovered, depending on its value. The end product may be a solid, but the transfer of heat in the evaporator must be to a solution or a suspension of the solid in liquid if the apparatus is not to be classed as a dryer. Evaporators are similar to stills or re-boilers of distillation

The engineer designing an ion exchange column operation usually will prefer to work with the simplest kinetic model and linear driving force approximations. The weakness ofthis approach is that any driving force law only regards the momentary exchange rate as a hnction of the solute concentration in the bulk solution and the average concentration in the particle, neglecting the effect of concentration profiles in the particle