High purity tellurium production using dry refining processes

robust control of a high-purity disttilation column using synthesis

Refining Business Processes

In this paper we present a calculus for re nement of business process models based on a precise de nition of business processes and process nets Business process models are a vital concept for communicating with experts of the application domain Depending on the roles and responsibilities of the application domain experts involved process models are discussed on di erent levels of ab straction ...

Biological Pretreatment and Dry Digestion Processes for Biogas Production

Biogas technology has been used quite extensively to generate renewable energy from organic wastes while also recycling nutrients in the wastes and reducing harmful emissions. However, the challenges of low biogas yield from recalcitrant and inhibitory solid wastes together with high construction and operation costs of bioreactors have impeded optimal performance through this process. Additiona...

Refining Security Requirement Elicitation from Business Processes using Method Engineering

A method defines a systematic process for problem solving including the required aids and resources. The transfer of method knowledge from the developers to other users requires a certain level of maturity and documentation of the method. Based on a method for security requirements elicitation from business processes (SREBP), we demonstrate how approaches from method engineering can be used to ...

High purity amphotericin B.

OBJECTIVES Amphotericin B (AmB) is a drug of choice for treatment of disseminated fungal infections, but its use is often associated with severe adverse effects. Our observation that generic formulations of AmB contain multiple polyene components led us to propose that removal of other polyenes would yield a high purity AmB (AmBHP) with an improved therapeutic index. METHODS To test that prem...