It is necessary to reduce the weight of components while maintaining or improving their mechanical properties withstand dynamic loads in lightweight structures. In this study, heat treatment and a trigger mechanism were implemented for thin-walled tube aluminium increase energy absorption reducing peak crushing force. Different geometries locations proposed deformation controlled manner, combin...

Recent information society policies have been paying much attention to the threat of a "digital divide". The gap between citizens from different socio-economic backgrounds with regard to their opportunities and abilities to access and use information and communication technologies is commonly regarded as a potential barrier for participation in the information society. This paper suggests a met...

We study the joint effect of thermal bath fluctuations and an external noise tuning activity of cytotoxic cells on the triggered immune response in a growing cancerous tissue. The immune response is assumed to be primarily mediated by effector cells that develop a cytotoxic activity against the abnormal tissue. The kinetics of such a reaction is represented by an enzymatic-like Michaelis-Menten...

The paper deals with the dynamics of the electrons in the first phase of the expansion of a spherical plasma irradiated by an ultraintense laser pulse, in which the ions can be considered as immobile. A simple model of ‘‘competitive escape’’ is proposed, in which the electrons leaving the ion sphere increase a potential barrier that prevents other electrons from escaping. © 2011 Elsevier Ltd. A...

It is attempt in pulverized coal injection (PCI) in blast furnace tuyeres to increase the injection rate without increasing the amount of unburned char inside the stack of the blast furnace. The unburned char can cause problems in the blast furnace operation, such as reduced permeability, undesirable gas/temperature distribution, excessive coke erosion and significant char carryover. In the nea...

An important problem at an integrated steel producing plant is the blending of different types of coals to make coke for the blast furnace operation. Historically linear blending models were not appropriate because coal properties important for both optimum cokemaking and blast furnace operation do not combine linearly and are not completely understood. In this talk, a two-step methodology is d...

Current blast furnace technology is a two-stage ironmaking process that requires that iron ore concentrate first be formed into pellets, fired at 1260°C, cooled, transported to the blast furnace, and then re-heated to approximately 1500°C to produce pig iron. This heating, cooling, and then reheating wastes a great deal of energy, which would be saved if the ironmaking process had only a single...

Based on the existing biomass co-firing technologies and the known innate drawbacks of dedicated biomass firing, including slagging, corrosion and the dependence on fuel, a new model of agro/forestry residue pellets/shreds and coal co-fired in a large Pulverized Coal (PC) furnace was proposed, and the corresponding technical and economic assessments were performed by co-firing testing in a 300 ...

a new hybrid modal-moment method is proposed to calculate fields penetrated through small apertures on rectangular metallic enclosures. first, the method of moments is used to numerically solve the governing electric field integral equation for the equivalent two-dimensional surface-current distributions on the surface of metallic enclosure including any number of rectangular apertures of arbit...