Gideon Onyekachi | University of Nigeria, Nsukka (original) (raw)
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Papers by Gideon Onyekachi
International Journal of Renewable Energy Research, 2021
Agricultural Engineering International: The CIGR Journal, 2019
Water is a very necessary and important factor in agricultural and farm production and is a key o... more Water is a very necessary and important factor in agricultural and farm production and is a key of our quality of life as well. Monitoring water level of a water source, such as dams, water tank or bore-well etc., plays a key role in agricultural management and development. If a water level drops below the threshold level for pumping in a water body, the pump motor may get damaged due to dry running. In such case monitoring water level becomes necessary task. Water engineers and so many other disciplines that study water, rainfall and so many other things related to water resources especially rivers, seas, lakes are faced with the challenge of acquiring quality and accurate data which is one of the motivations of this research. This work aimed at development of a low cost automatic water level monitoring system (WLMS). The major components used for the development of the WLMS were Arduino board, ultrasonic sensor, Xbee transceiver and personal computer. The automatic water level mon...
Biological Approaches for Controlling Weeds, Sep 5, 2018
Exotic plants in new ecosystems where they may be of no economic importance and where their origi... more Exotic plants in new ecosystems where they may be of no economic importance and where their original biological enemies may be absent become weeds, difficult to manage by crop farmers. They limit the productivity of the lands and hence affect crop development and yield. Efforts towards reducing reliance on herbicides and other methods for environmental, health, economic and sustainability reasons have led to increasing interest in the biological approach to controlling these weeds. This work therefore presents an overview of the biological approach to weed control with focus on the basic concepts, underlying principles, procedures and current practices, cases and causes of failure and successes. Specifically, this chapter has discussed the underlying principles, general procedures, reasons for relatively slow popularity and adoption of biological weed control, examples of successful biological control of weeds with introduced insects and pathogens, when is weed biological control successful?, things to consider when making the choice of agents to be introduced to control weeds and steps to identifying and introducing biological control agents.
As a result of cost, environmental impact and fear of sustainability of petroleum products, vario... more As a result of cost, environmental impact and fear of sustainability of petroleum products, various alternatives for energy have been sourced out, of which biodiesel is seen as the closest. Rubber seed oil has been a viable source for biodiesel production because it is not edible. This oil was used in this work to produce biodiesel and the functional properties which are the cetane number, kinematic viscosity and yield were optimized. Response surface methodology is one of the tools used for the simulation and optimization of biodiesel production process. Thirty (30) experiments were carried out in the lab using experimental process design for the trans-esterification process via CCD. A parametric study of the process parameters involved in the trans-esterification reaction showed that the output responses which were yield, kinematic viscosity and cetane number had greater dependence on the methanol to oil ratio, reaction time and reaction temperature than on catalyst concentration....
Abiotic and Biotic Stress in Plants [Working Title]
The increase in the carbon-dioxide (CO 2) present in the atmosphere as a result of human activiti... more The increase in the carbon-dioxide (CO 2) present in the atmosphere as a result of human activities affects the ambient temperature, and rainfall pattern in terms of season, duration, intensity of sunshine, increased drought periods, waterlogging, and increased evapotranspiration. This influence negatively the development, yield and quality of the plants grown under this condition. The quests to produce stress tolerant/resistant plants and increase crop productivity have led to the study of plant stresses, their response to different stress type and stress management procedures in plants. This chapter has discussed in details the different abiotic stressors in plants and how they are being influenced by climate change, the response of these plants to different abiotic stresses or a combination of stresses, and abiotic stress management.
International Journal of Renewable Energy Research, 2021
Agricultural Engineering International: The CIGR Journal, 2019
Water is a very necessary and important factor in agricultural and farm production and is a key o... more Water is a very necessary and important factor in agricultural and farm production and is a key of our quality of life as well. Monitoring water level of a water source, such as dams, water tank or bore-well etc., plays a key role in agricultural management and development. If a water level drops below the threshold level for pumping in a water body, the pump motor may get damaged due to dry running. In such case monitoring water level becomes necessary task. Water engineers and so many other disciplines that study water, rainfall and so many other things related to water resources especially rivers, seas, lakes are faced with the challenge of acquiring quality and accurate data which is one of the motivations of this research. This work aimed at development of a low cost automatic water level monitoring system (WLMS). The major components used for the development of the WLMS were Arduino board, ultrasonic sensor, Xbee transceiver and personal computer. The automatic water level mon...
Biological Approaches for Controlling Weeds, Sep 5, 2018
Exotic plants in new ecosystems where they may be of no economic importance and where their origi... more Exotic plants in new ecosystems where they may be of no economic importance and where their original biological enemies may be absent become weeds, difficult to manage by crop farmers. They limit the productivity of the lands and hence affect crop development and yield. Efforts towards reducing reliance on herbicides and other methods for environmental, health, economic and sustainability reasons have led to increasing interest in the biological approach to controlling these weeds. This work therefore presents an overview of the biological approach to weed control with focus on the basic concepts, underlying principles, procedures and current practices, cases and causes of failure and successes. Specifically, this chapter has discussed the underlying principles, general procedures, reasons for relatively slow popularity and adoption of biological weed control, examples of successful biological control of weeds with introduced insects and pathogens, when is weed biological control successful?, things to consider when making the choice of agents to be introduced to control weeds and steps to identifying and introducing biological control agents.
As a result of cost, environmental impact and fear of sustainability of petroleum products, vario... more As a result of cost, environmental impact and fear of sustainability of petroleum products, various alternatives for energy have been sourced out, of which biodiesel is seen as the closest. Rubber seed oil has been a viable source for biodiesel production because it is not edible. This oil was used in this work to produce biodiesel and the functional properties which are the cetane number, kinematic viscosity and yield were optimized. Response surface methodology is one of the tools used for the simulation and optimization of biodiesel production process. Thirty (30) experiments were carried out in the lab using experimental process design for the trans-esterification process via CCD. A parametric study of the process parameters involved in the trans-esterification reaction showed that the output responses which were yield, kinematic viscosity and cetane number had greater dependence on the methanol to oil ratio, reaction time and reaction temperature than on catalyst concentration....
Abiotic and Biotic Stress in Plants [Working Title]
The increase in the carbon-dioxide (CO 2) present in the atmosphere as a result of human activiti... more The increase in the carbon-dioxide (CO 2) present in the atmosphere as a result of human activities affects the ambient temperature, and rainfall pattern in terms of season, duration, intensity of sunshine, increased drought periods, waterlogging, and increased evapotranspiration. This influence negatively the development, yield and quality of the plants grown under this condition. The quests to produce stress tolerant/resistant plants and increase crop productivity have led to the study of plant stresses, their response to different stress type and stress management procedures in plants. This chapter has discussed in details the different abiotic stressors in plants and how they are being influenced by climate change, the response of these plants to different abiotic stresses or a combination of stresses, and abiotic stress management.