Danwé Raïdandi
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View article: Prediction of Physic-Mechanical Properties of Geopolymers Based on Recycled Thermoplastic Materials for Stabilizing Buildings: Case of Mara and Toukra Sites of N’Djamena
Prediction of Physic-Mechanical Properties of Geopolymers Based on Recycled Thermoplastic Materials for Stabilizing Buildings: Case of Mara and Toukra Sites of N’Djamena Open
View article: Formulation and Physico-Mechanical Characterization of Bricks Composed of Recycled Thermoplastics and Toukra Soil
Formulation and Physico-Mechanical Characterization of Bricks Composed of Recycled Thermoplastics and Toukra Soil Open
View article: Physical Characterization of Ecological Briquettes Based on Vertisols and Sorghum Bicolor CS54 Fibers
Physical Characterization of Ecological Briquettes Based on Vertisols and Sorghum Bicolor CS54 Fibers Open
The aim of this work is to perform the physical characterization of ecological briquettes based on vertisols and fibers of Sorghum bicolor CS54 from the city of Maroua located in the Far North of Cameroon, a country of Sub-Saharan Africa. …
View article: Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad
Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad Open
Many sensible heat storage materials are regularly used as thermal energy storage (TES) systems to improve the efficiency of solar dryers. The present work focuses on the effects of the volume and particle sizes of a volcanic stone (pozzol…
View article: Thermophysical, Mechanical and Durability Characterization of Adobe Bricks Reinforced with Fonio <i>(Digitaria</i> <i>exilis)</i> Sounds
Thermophysical, Mechanical and Durability Characterization of Adobe Bricks Reinforced with Fonio <i>(Digitaria</i> <i>exilis)</i> Sounds Open
View article: Physical and Chemical Properties of Horns Sheaths Particles for the Manufacture of Composite Materials
Physical and Chemical Properties of Horns Sheaths Particles for the Manufacture of Composite Materials Open
Salvaged cow horns from slaughterhouses have been transformed into fine particles for a physical characterization that has led us to determine the humidity rate (2.34% ± 0.054%), the actual density situated between 0.586 g/cm3 and 0.732 g/…
View article: Geochemistry and Microstructure of Construction Materials from the Eastern Districts of N&#8217;Djamena Chad with a View to Their Stabilization in the Building and Pottery
Geochemistry and Microstructure of Construction Materials from the Eastern Districts of N’Djamena Chad with a View to Their Stabilization in the Building and Pottery Open
View article: Statistical analysis of wind speed distribution based on sixWeibull Methods for wind power evaluation in Garoua, Cameroon
Statistical analysis of wind speed distribution based on sixWeibull Methods for wind power evaluation in Garoua, Cameroon Open
Wind data analysis and accurate wind energy potential assessment are critical factors for suitable development of wind power application at a given location. This paper explores wind speed distribution to select the two-parameter Weibull m…
View article: Mechanical Potential of Adhesives Elaborated with the Gramineae Stem Lignin
Mechanical Potential of Adhesives Elaborated with the Gramineae Stem Lignin Open
The aim of this work is to valorize local materials and to replace synthetic resins in the wood industry with biodegradable resins made from renewable resources such as the dry stems of herbaceous plants. Klason extracted the gramineae ste…
View article: Characterisation of a composite material with polyester matrix reinforced with particles from doum palm (hyphaene thebaica) fruit
Characterisation of a composite material with polyester matrix reinforced with particles from doum palm (hyphaene thebaica) fruit Open
The objective of this paper is to extract the hulls of Hyphaene thebaica fruit to elaborate a composite material with polyester matrix and to characterize it physically and mechanically. The first step of the process consisted of crushing,…
View article: Thermal and Mechanical Characterization of Compressed Clay Bricks Reinforced by Rice Husks for Optimizing Building in Sahelian Zone
Thermal and Mechanical Characterization of Compressed Clay Bricks Reinforced by Rice Husks for Optimizing Building in Sahelian Zone Open
This article deals with the characterization of local materials used in insulation building heat. These materials are bricks of earth compressed and stabilized with rice husks. Thermal conductivity, the specific heat and the thermal diffus…
View article: Optimal sizing of hybrid Systems for Power loss Reduction and Voltage improvement using PSO algorithm: Case study of Guissia Rural Grid
Optimal sizing of hybrid Systems for Power loss Reduction and Voltage improvement using PSO algorithm: Case study of Guissia Rural Grid Open
This work proposes a method for sizing and reducing power losses (MSRPL) of a hybrid photovoltaic and wind system (HPWS) in a radial distribution network (RDN) by developing an objective function, thanks to particles swarm optimization (PS…
View article: Desorption Behavior and Thermogravimetric Analysis of Bio-Hardeners
Desorption Behavior and Thermogravimetric Analysis of Bio-Hardeners Open
In this work, the thermal degradation and drying of bio-hardeners are investigated. Four bio-hardeners based on exudates of Senegalia senegal, Vachellia nilotica, Vachellia seyal, and Acacia Siebteriana were analyzed by FTIR and thermograv…
View article: Characterization of a Composite Material with Polyester Matrix Reinforced with Particles from Doum Palm (Hyphaene Thebaica) Fruit
Characterization of a Composite Material with Polyester Matrix Reinforced with Particles from Doum Palm (Hyphaene Thebaica) Fruit Open
View article: Physico-Mechanical Properties of Bio-Based Bricks
Physico-Mechanical Properties of Bio-Based Bricks Open
The aim of this work is to improve the high performance of mud bricks. The latter was reinforced with rice straws as stabiliser leading to an improvement of the physico-mechanical properties. Thus, the physical characteristics of the clay …
View article: Wind power as an alternative to sustain the energy needs in Garoua and Guider, North Region of Cameroon
Wind power as an alternative to sustain the energy needs in Garoua and Guider, North Region of Cameroon Open
View article: Performance of Unidirectional Biocomposite Developed with Piptadeniastrum Africanum Tannin Resin and Urena Lobata Fibers as Reinforcement
Performance of Unidirectional Biocomposite Developed with Piptadeniastrum Africanum Tannin Resin and Urena Lobata Fibers as Reinforcement Open
International audience
View article: Effet du sable sur les CBR des argiles gonflantes de l'extrême Nord Cameroun
Effet du sable sur les CBR des argiles gonflantes de l'extrême Nord Cameroun Open
L’indice CBR est un paramètre fondamental utilisé dans la construction des ouvrages en terre ou des assises de chaussées. Les mesures réalisées sur les sols argileux gonflants montrent qu’il demeure très faible. Les essais des mesures de C…
View article: Variable Structure Controller for Stabilizing Delayed Systems: A Lyapunov-Krasovskii Design Approach
Variable Structure Controller for Stabilizing Delayed Systems: A Lyapunov-Krasovskii Design Approach Open
A Variable Structure Controller (VSC) is designed for the purpose of stabilizing a Time Delay System (TDS).The considered system is delay-dependent stable.The system remains stable as delay is increased from zero to a maximum value at whic…
View article: Experimental Study and Numerical Simulation Using Extended Finite Element Method (XFEM) Combined with Cohesive Zone Model (CZM), of Crack Growth Induced by Non-Explosive Expansive Material on Two Neighboring Circular Holes of A Gneiss Rock
Experimental Study and Numerical Simulation Using Extended Finite Element Method (XFEM) Combined with Cohesive Zone Model (CZM), of Crack Growth Induced by Non-Explosive Expansive Material on Two Neighboring Circular Holes of A Gneiss Rock Open
The Non-explosive expansion material (NEEM) is a method more environmentally friendly than the harmful conventional rock fracturing techniques. However, it is slower and very costly. Thus, any means of economizing their use is very desirab…
View article: African tree bark exudate extracts as biohardeners of fully biosourced thermoset tannin adhesives for wood panels
African tree bark exudate extracts as biohardeners of fully biosourced thermoset tannin adhesives for wood panels Open
View article: Characteristics and Mechanicals Potentials of Wood Adhesives Manufactured with Grasses’ Lignins
Characteristics and Mechanicals Potentials of Wood Adhesives Manufactured with Grasses’ Lignins Open
In order to manufacture environmentally friendly particle boards and enhance local resources, the lignins of Sorghum bicolor and Andropogon gayanus characterized using RMN 13C and MALDI TOF have the same structures. They contents Guaiacyl …
View article: Influence of the Colorless Waste Glass on the Mineralogical, Microstructural and Mechanical Properties of Clay Material from Wack (Adamawa, Cameroon)
Influence of the Colorless Waste Glass on the Mineralogical, Microstructural and Mechanical Properties of Clay Material from Wack (Adamawa, Cameroon) Open
This study reports the investigation of the influence of adding waste glass on the properties of fired clay specimen. Four different particle sizes (smaller than 100 μm, 300μm, 500μm, and 800 μm) of waste glass were mixed with a clay mater…
View article: Modeling and analysis of boost converter in small-signals applied to the wind energy conversion system using Matlab/Simulink
Modeling and analysis of boost converter in small-signals applied to the wind energy conversion system using Matlab/Simulink Open
The problem of stabilizing a boost converter in small-signal situations using linear control laws is derived by the means of oriented circuit procedure. After establishing a small-signal circuit model for the boost regulator including stat…
View article: Physico-Chemical and Mineralogical Characterization of Two Clay Materials of the Far North Region of Cameroon (Makabaye, Maroua)
Physico-Chemical and Mineralogical Characterization of Two Clay Materials of the Far North Region of Cameroon (Makabaye, Maroua) Open
To contribute to the valorization of local materials, the physico-chemical and mineralogical characterization of two clay materials MJ and MN collected in the Mayo Tsanaga river which crosses the Makabaye district of Maroua (Cameroon) was …
View article: Variable Structure Controller for Surface Ship Steering
Variable Structure Controller for Surface Ship Steering Open
A Lyapunov approach to constructing switching surfaces for variable structure systems is investigated in this paper. The method guarantees sliding mode for any initial condition of the state vector and asymptotic stability is always achiev…
View article: Wind Energy for Electricity Generation in the Far North Region of Cameroon
Wind Energy for Electricity Generation in the Far North Region of Cameroon Open
This paper explores mountain ridges around Kousseri and Maroua in the far north region of Cameroon for assessing the potential for wind energy development and electricity generation. A 28-year (1985-2013) wind speed data measured at 10 m a…
View article: A strategy to improve the quality of the electric power produced by a wind turbine under variable speed using a proportional resonant controller
A strategy to improve the quality of the electric power produced by a wind turbine under variable speed using a proportional resonant controller Open
The wind power is well adapted nowadays as solution to the production of electricity or for mechanical use. But wind is a very fluctuating source of energy; it generates a non-permanent and variable power to the loads. This paper presents …