The aim of this work was to study the ignition behaviour eight coals different coal ranks, petrographic compositions, and places origin. research allows us gain deeper insight into mechanism relationship between certain properties their during ignition. methodology utilised standard fuel ASTM data, analysis, pyrolysis oxidation reactivity, characteristics generated through lab-scale tests using...

Balanogastris kolae reduces the quality of stored kolanuts; yet, plants with insecticidal properties could be used to manage this insect pest. The objective study was evaluate efficacy plant oils against B. kolae, a storage pest kolanuts. Citrus aurantifolia fruit peel and Piper guineense seed volatile obtained via hydro-distillation dried, pulverised samples were tested. Their chemical composi...

Abstract The aim of this study is to understand the strength behaviour and fragment size rocks during indirect, quasi-static dynamic tensile tests. Four with different lithological characteristics, namely: basalt, granite, sandstone, marble were selected for study. Brazilian disc experiments performed over a range strain rates from ~ 10 –5 /s 2.7 × 1 using hydraulic loading frame split Hopkinso...

5.1.1.1. Sensor Design There are misperceptions in the power industry that the measurement technologies for suspended flow have reached a mature state. Despite the considerable effort in recent years there is still a great deal to be done to advance the technologies. There are presently no systems that can provide absolute measurement of coal mass flow rate and particle sizing distribution. Ins...

The combustion of pulverised coal in power stations results in slagging and fouling in the boiler section and this can be a more severe problem when co-fired with biomass, especially straw. Prediction of the effects of different combination of biomass and coal are helpful to the plant operators. Predictive software gives information about the onset and nature of the slag formed but often the re...

BACKGROUND Biomaterials are non-drug substances used to treat, enhance or replace functions of body tissues or organs. Natural sources of biomaterials have recently become the focus of several research activities. Cowry shell constitutes one of the most promising natural sources of biomaterials because of its chemical stability, biodegradability and biocompatibility in the body. However, its ap...