Title: |
Incidence of Seasonal Precipitation on Corn Production and Some Resilient Strategies in Touboro (North Cameroon) of 2002-2022 |
Authors: |
MENA Marin Sylvère Marie, LILA Reni Bibriven, BAWA Alphonse |
Source: |
International Journal of Latest Engineering Research and Applications, pp 01 - 15, Vol 10 - No. 04, 2025 |
Abstract: |
This research aims to establish a link between rainfall variability and corn production in the Touboro district between 2002 and 2022. The objective of this work is to offer resilient solutions in the face of the harmful consequences of fluctuations in precipitation. To carry out our reflection, we have combined not only the descents on the ground, make use of several variants such as: normal, scales (sequential, decennial and five-year), standard deviations, clues of rain but also we opted for a much more hypothetical-deductive technique. Thanks to these different approaches, the analyzes reveal that: precipitation is characterized by fluctuations in which deficits and pluviometric excess. Despite the rainfall oscillations, seasonal and annual precipitation is more at least constant. Pluviometric anomalies affect agricultural activities to cause the production of corn production. Thus, precipitation turns out to be one of the key factors in the corn production process. To this essential variable is added other elements that can influence production, namely: temperature, wind, soil, cultivation techniques, quality of seed etc. Faced with these multiple problems such as rainfall deficit, the proliferation of pilgrim locusts, crop floods, soil infertility, peasants have implemented some adaptation techniques, namely: fertilizer intensification, Date dispersion of sowing, the Polyculture and the market garden. Despite these strategies, farmers have trouble adapting truly to rainfall variability. For this purpose, it is imperative to multiply strategies, to strengthen resilient capacities to activities in order to reduce the impact of climate change guaranteeing sustainable and less vulnerable culture. To this end, we must promote the association both researchers, agronomist engineers, peasants, state authorities and non -governmental organizations (NGOs). |
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DOI: |
10.56581/IJLERA.10.4.01-15 |
Title: |
Optimal Material Selection for the Design and Fabrication of a Three Wheeled Electric Vehicle (TRIKES) |
Authors: |
Celestine Nwogbu, Udeh Ubasinachi Osmond, Paul Nwogbu |
Source: |
International Journal of Latest Engineering Research and Applications, pp 16 - 35, Vol 10 - No. 04, 2025 |
Abstract: |
This research explores the application of material selection in the design and fabrication of a three wheeled electric vehicle. The material selection criteria considered up to sixty percent (60%) locally sourced materials, which is in consonance with the GREEN INITIATIVE, in a world already affected by the emissions of combustible fuel generated by automobiles which deplete the Ozone layer. The project employed the optimized design tools of Computer Aided Design (CAD) and Computer Aided Manufacturing (CAM).The selected component parts are the DC brushed motor, the transmission, the steering mechanism, the suspension system, and wheels that were mounted upon square pipes that served as the chassis. The chassis, which carries the batteries, transmission, electric motor and other components is made of mild steel square pipes of 5.0cm cut into different shapes in order to meet the design specifications. The selected battery is a 38Ah-12V lead acid battery, With the designed torque of 9,5Nm, and having the voltage of 12V.The fabricated Electric tricycle vehicle (ETV) demonstrates improved performance, including increased range, reduced energy consumption and enhanced stability for sustainable transportation systems. |
Keywords: |
Material selection, design, optimization, electric vehicle, transmission, Cad, Cam, components |
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Title: |
Impact of a Transverse Crack of the Shaft on Dynamic Stiffness |
Authors: |
P. Fraga; F. De Cal, B. |
Source: |
International Journal of Latest Engineering Research and Applications, pp 36 - 48, Vol 10 - No. 04, 2025 |
Abstract: |
A rotor of laboratory model of 2 degrees of freedom, with solid bronze bearings, has been studied to which a transverse crack of 10% of the shaft diameter, approximately, has been made, in addition to introducing a determined mass imbalance and a vertical radial load to cause the propagation of this crack. The rotor in question is horizontal, so the force of gravity will also act and add to the vertical load for the propagation of that crack. It is observed how the 1X and 2X responses are increased and stand a method to detect a crack in the shaft. The relationships between both responses remain considered and are fundamental as a symptom of the crack, as well as others. However, in this work we had concentrated on what the crack means for the modification, decrease in this case, of the dynamic stiffness of the shaft in its stands, measured through two induction or proximity transducers in order to verify the clear difference between the shaft containing the crack and another installed perpendicular to the latter. |
Keywords: |
Rotor dynamics, shaft crack, dynamic stiffness. |
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Title: |
An Assessments of the Impact of Natural Disasters on the Economy and Society in Yen Bai Province- A Review Paper |
Authors: |
T.A.N, Tran |
Source: |
International Journal of Latest Engineering Research and Applications, pp 49 - 54, Vol 10 - No. 04, 2025 |
Abstract: |
Globally, the increasing frequency and intensity of natural disasters pose a significant threat to the economic, social, and environmental development. As a result of these disasters, livelihoods are disrupted, critical infrastructure is damaged, and long-term sustainability is impaired, making disaster resilience and climate adaptation essential priorities for nations. The primary economic sectors of Yen Bai, located in the midland and mountainous area of northern Vietnam, are agriculture and forestry. Because of its rugged terrain, and frequent storms circulation, the province is highly susceptible to natural hazards such as floods, landslides, and storms. The disasters have resulted in thousands of deaths, displacement and significant damage to crops, homes, and critical infrastructure. Soil erosion and unpredictable weather patterns have particularly affected the agricultural sector, which is highly vulnerable to economic impacts. Moreover, infrastructure damage further undermines local economic stability development. In this paper, we examine the socioeconomic impacts of natural disasters in Yen Bai using local statistics and secondary data. By strengthening early warning systems, investing in climate-resilient infrastructure, promoting sustainable agricultural practices, and raising public awareness, it aims to mitigate the effects of climate change. To ensure long-term sustainable development, these strategies are essential for enhancing Yen Bai’s resilience to climate change. |
Keywords: |
Yen Bai; Natural hazards; Climate Change; Socioeconomic impacts; Sustainable development |
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DOI: |
10.56581/IJLERA.10.4.49-54 |