Learn More
Trypsin and acid phosphatase-containing silica sol-gel glasses were obtained by mixing a solution of an enzyme with polyethylene glycol (PEG) 6000 and tetramethoxy orthosilicate at room temperature, followed by gelation and drying. Activity of the immobilized trypsin toward small substrates, such as N-benzoyl-L-arginine-4-nitroanilide at its Km, for the(More)
Our goal is to increase efficiency and quality in automation engineering in machine and plant manufacturing industry by supporting modularity and reuse. This article proofs that object-oriented model-based design can beneficially be applied in industry and that the code automatically derived from the UML model can be implemented on industrial PLCs without(More)
This paper presents the modular automation for reuse in manufacturing systems (modAT4rMS) approach to support the model-driven engineering (MDE) of object-oriented manufacturing automation software with regard to its usability and software modularity. With usability, we refer to the aspects' effectiveness, efficiency, and user acceptance as defined by ISO(More)
Glucose oxidase immobilized in a transparent silicate gel prepared by a sol-gel method was used as a simple solid-state optical biosensor for glucose. The sensor was based upon the measurement of initial rates of reduction of the FAD prosthetic group of the enzyme in the presence of various concentrations of glucose. The analytical range of the sensor was(More)
During the last eight years we investigated the benefit of modeling notations, e.g. UML and domain specific UML profiles as well as specialized modeling languages (Idiomatic Control Language - ICL) in software engineering (IEC 61131-3) in machine and plant automation with three different experiments and approximately more than 120 participants. The results(More)