This study considered the estimation of the time of concentration (TC) using 30 different watersheds in Anambra State, Nigeria. The study assessed the performance of some existing models for the estimation of time of concentration in the study area. Data for this research were co...
Open access
Research Article10.9734/jerr/2021/v20i517314
Composting organic materials like cow dung and food waste is a sustainable method to enhance soil quality by recycling nutrients back into the ecosystem. This study explores the aerobic composting process, which involves the microbial breakdown of organic matter in the presence o...
Open access
Research Article10.9734/ajarr/2024/v18i12845
Adsorption is one of the most widely applied techniques for the removal of contaminants from the environment. The effectiveness of an adsorbent is dependent on its kinetics. There are lots of studies on adsorption kinetics, and several mathematical models have been developed to d...
Open access
Research Article10.9734/jerr/2022/v23i8741
In this paper, the authors reviewed the characteristics of a ball that descended one step each bounce of a flight of stairs and drew an analogy with a stepped spillway with a fully developed hydraulic jump. They used this concept with equations of motion, classical hydraulic jump...
Open access
Research Article10.9734/jerr/2022/v23i417604
Stepped spillways use their stepping nature to substantially dissipate energy in floodwater. Many researchers investigated the hydraulic and geometric relationships of the stepped spillway with a dam slope above 26.6o degrees that resulted in energy dissipation. But few studied s...
Open access
Research Article10.9734/jerr/2022/v23i417602
Stepped spillways are current method of choice for safe discharge of flood water due to their inherent ability to employ their stepping nature to safely dissipate substantial energy. Hence, the authors in this study aim to provide to design engineers new models for estimating ene...
Open access
Research Article10.9734/jerr/2022/v22i1217580
Aims: This study considered the optimal maintenance cost of water boreholes for a multiple pumping scenario in South-East Nigeria. The objective of the study was to determine the optimal maintenance cost of water boreholes for the Southeastern region of Nigeria. Place and Duratio...
Open access
Research Article10.9734/jerr/2020/v18i117199
The rainfall Intensity-Duration-Frequency (IDF) relationship is widely used for adequate estimation of rainfall intensity over a particular catchment. A 25 year daily rainfall data were collected from Nigerian Meteorological Agency (NIMET) Abuja for Akure station. Twenty five yea...
Open access
Research Article10.9734/ijecc/2019/v9i830131
The design of water resources engineering control structures is best achieved with adequate estimation of rainfall intensity over a particular catchment. To develop the rainfall intensity, duration and frequency (IDF) models, 25 year daily rainfall data were collected from Nigeri...
Open access
Research Article10.9734/jerr/2019/v6i416956
In this paper a Decision Support System named W8st colSoft is developed by employing dynamic programming and swarm intelligence model encoded in Visual Basic Studio 10.0. Solved solutions from literatures were used to validate the developed decision support system. The results ob...
Open access
Research Article10.9734/BJAST/2016/25080