In this research, we are analysing the behaviour of the wastes coconut shells of african palm (Elaeis guineensis) when dealing with different gas mixtures and its influence on the development of lattice porous internal and its formation as foam. The study shows that samples worked with water vapour mixtures developed the highest percentage of carbon foam as foams. The greatest expansion of the ...

Aluminum (Al) and Al alloys exhibit unusual passivity when immersed in alkaline lithium (Li) salt solutions. This passivity is a result of precipitation of a continuous, polycrystalline talc coating. Talc coatings persist when removed from the Li salt solution and offer increased corrosion protection during exposure to aggressive environments. Efforts to develop a low-cost, low-toxicity, easily...

Abstract Gassing, outbursts of high-rate gas flows through the taphole, is a phenomenon that sometimes occurs during tapping silicon furnaces. In addition to being an HSE challenge, this might also affect tapping, while warm harm equipment in area. The pressure above metal bath, influencing gassing, affected by permeability, and flow charge materials furnace. Pressure drop permeability have bee...

Abstract A new method of preparation aqueous electrolyte baths for electrochemical deposition nickel targets medical accelerators is presented. It starts with fast dissolution metallic Ni powder in a HNO 3 -free solvent. Such obtained raw solution does not require additional treatment aimed to removal nitrates, such as the acid evaporation and salt precipitation-dissolution. used directly plati...

Correct determination of absolute values and polarities of liquid junction potentials (LJPs) is essential in patch clamp experiments for the estimation of ionic selectivities and activation voltages of ion channels. A simple approach for the correction of membrane voltages for LJPs has been developed. The method covers all combinations of LJPs between the solutions of bath, patch pipette and re...

During the vanadium extraction process in basic oxygen furnace (BOF), unduly high temperature is unfavorable to achieve efficient yield with minimum carbon loss. A new strategy was developed based on industrial experiments. The applies selective oxidation between and (Tsl) equilibrium of reduction (Teq) for earlier middle-late smelting, respectively. Industrial experiments showed 56.9 wt% V rem...

A mathematical heat transfer model for the prediction of transient heating of the slab in a direct-fired walking beam type reheating furnace has been developed by considering the nongray thermal radiation with given furnace environments. The furnace is modeled as radiating nongray medium with carbon dioxide and water with five-zoned gas temperature and the furnace wall is considered as a consta...

An analytical model of a spreader-stoker wood waste fired boiler has been developed for pre­ dicting the size of the largest particle which can be entrained by the upward motion of the furnace gases. This model is based on an entrainment model which equates particle in-situ settling velocity to furnace gas velocity and uses a stirred reactor mod­ el to evaluate furnace conditions. The effects o...