This paper discusses a new type of selective-constrained resource-economic-pollution (REP) system. Based on the nonlinear dynamics theory, the dynamic behavior of the new system is discussed. The genetic algorithm is used to identify the quantitative coefficients of the actual sy...
Open access
Research Article10.9734/jenrr/2019/v3i230092
Waste resulting from economic activities has been an integral part of every human society. Effective waste management is considered to be consistent with improved quality of life through removal of potential hazards of uncontrolled disposal. Recent years has witnessed a number of...
Open access
Research Article10.9734/jenrr/2019/v3i230091
Removal of lead from Enugu coal with different acids as the leachant under different conditions such as leaching time, particle size, acid concentration, and leachant volume was investigated in this studies. The filtrate from each treatment was analyzed with Atomic Absorption X-r...
Open access
Research Article10.9734/jenrr/2019/v3i130090
The energy and exergy of syngas produced from air-steam gasification of wheat straw in a dual-distributor fluidized bed gasifier under different operating conditions were evaluated. Three fluidization velocities (0.35, 0.40 and 0.45 m/s), 3 steam flow rates (0.20, 0.25 and 0.30 k...
Open access
Research Article10.9734/jenrr/2019/v3i130089
In this study, time series statistical analysis was carried out on the monthly average daily meteorological parameters of global solar radiation, sunshine hours, wind speed, mean temperature, rainfall, cloud cover and relative humidity during the period of thirty one years (1980...
Open access
Research Article10.9734/jenrr/2019/v3i130088
Introduction: Foam mat drying involves the change of agricultural material from a high moisture content level to a stable foam which is achieved by moisture reduction mechanism. Aim: In this study, foam-mat drying process of watermelon was optimized using response surface methodo...
Open access
Research Article10.9734/jenrr/2019/v3i130087
Energy is the prime mover of development cutting across industrialisation, manufacturing and residential consumption. Recently, Kenya, being ranked high among the most developed countries in Africa, has mapped way for embracement of renewable energy technology with increasing deb...
Open access
Research Article10.9734/jenrr/2019/v3i130086
By means of observational evidence it is shown that, among the vast amount of heat-work interactions occurring in closed process based transformations, there exists the possibility of doing a transformation characterized by doing useful mechanical work by contraction based compre...
Open access
Research Article10.9734/jenrr/2019/v2i430085
This study estimated natural gas demand elasticities in Nigeria. The objective of the study was to examine the responsiveness of natural gas demand to changes in price of natural gas, income and prices of other energy products. The study adopted the bound testing approach to c...
Open access
Research Article10.9734/jenrr/2019/v2i430084
A computational analysis in a rotary regenerative air preheater subject to pre-established mass flow rate is performed. The heat transfer rate, the pressure drop and the outlet temperatures of gas streams are calculated from different matrix porosity values. The fluid flow and th...
Open access
Research Article10.9734/jenrr/2019/v2i430083
Introduction: Thermochemical and biochemical processes are used to convert biomass into useful and sustainable energy. Thermoconversion processes comprises the biomasses burning in an oxygen-rich environment or in the absence of this, where types and fuel properties, process cond...
Open access
Research Article10.9734/jenrr/2019/v2i430082
This work investigated the terrestrial solar radiation over Awka, South Eastern Nigeria using meteorological parameters of terrestrial temperature and relative humidity collected during 2013- 2014 respectively, using Davis weather station vantage pros2 (with Integrated Sensor Sui...
Open access
Research Article10.9734/jenrr/2019/v2i430081
In this paper, the spatial measurement model is introduced into the environmental Kuznets curve to investigate the impact of income on household electric carbon emissions. The spatial correlation diagnosis was made by using Moran scatterplot and Moran index. The results of spatia...
Open access
Research Article10.9734/jenrr/2019/v2i330080
Epileptic power supply is a major problem in Nigeria and one of the ways Nigerians have solving this challenge is by using renewable energy as an alternative power supply in place fossil fuels. Among renewable energy sources, solar is the most important because it is available in...
Open access
Research Article10.9734/jenrr/2019/v2i330079
This study has attempted to assess the performance of the most suitable statistical distribution function for modelling solar radiation over Yenagoa, Bayelsa State in Nigeria. The probability distribution functions are tested based on eleven years (2007-2017) solar radiation data...
Open access
Research Article10.9734/jenrr/2019/v2i330078