Artificial neural network model with the parameter tuning assisted by a differential evolution technique: the study of the hold up of the slurry flow in a pipeline

This paper describes a robust hybrid artificial neural network (ANN) methodology which can offer a superior performance for the important process engineering problems. The method incorporates a hybrid artificial neural network and differential evolution technique (ANN-DE) for the efficient tuning of ANN meta parameters. The algorithm has been applied for the prediction of the hold up of the solid liquid slurry flow. A comparison with selected correlations in the literature showed that the developed ANN correlation noticeably improved the prediction of hold up over a wide range of operating conditions, physical properties, and pipe diameters

Mass Handling of Materials

Material handling is defined as the operation of lifting and shifting . The object of all material handling is the reduction of handling cost, time, storage space, and effort. Mechanised handling permits synchronisation of operations, avoidance of bottlenecks keeping the job on the move and reduction of manual labour which may be devoted to more useful purpose requiring skill and inte-lligence.Mounting labour costs throughout the world have also directed attention to the expanding importance of mechanised handling in every field of industry

Green processes in process metallurgy

Environmental pollution ultimately governs the economic or industrial growth rate of the world. Ideal green processes, both conceptual and feasible are discussed and the advantages and limitations are brought out. Typical examples of novel techniques developed to combat pollution are presented. An integrated approach coupling energy saving with pollution control measures appears to be the best strategy

Silicon Membranes for Smart Silicon Sensors .

The development of smart Si sensors which combine active circuitry and sensor on the same chip, has drawn attention in terms of miniaturisation and cost-effectiveness of microsensors. Interest in micromachining of Si to fabricate membranes derives from the need for inexpensive and more versatile sensors. This paper reports the results on fabrication of Si membranes by anisotropic etching of Si in EDP solution. Good quality membranes of 10 Nanometer thickness were fabricated. Infrared detector based on thermopile structure was realised on 50 Nanometer thick Si membrane using polysilicon and Al junctions. Thermo-emf generated at 150 °c is nearly 8 mv

Studies on Dissociation Constants of Substituted Salicylic Acids in Ethanol - Water Mixtures by Conductometric Method

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Vremenska ovisnost punjenja klopki u kristalima KCl:KBr za vrijeme bojenja druge zone

Electron injection was carried out in single crystals of KCl doped with KBr under constant temperature for different fields. The injection current and optical density were measured as functions of time. The process was stopped arbitrarily. An analytical theory has been worked out and the growth coefficient (k) has been found to behave in an anomalous way in describing the detrapping process.Izvodili smo ubacivanje elektrona u monokristale KCl punjene s KBr na stalnoj temperaturi i za niz električnih polja. Mjerili smo struju ubacivanja i optičku propusnost kao funkcije vremena. Ubacivanje smo prekidali. Razvili smo analitičke izraze za analize i našli da je koeficijent rasta (κ), koji opisuje izlazak elektrona iz klopki, anomalan