Authors and article name	Page
P. Saint-Gregoire Forewords of the deputy editor-in-chief for France and southern french speaking countries, Guest-editor of the special issue	9
P. Saint-Gregoire Overview on fields related to renewable energies relevant for north-south collaborations (new perspectives of co-development)	11
Hydrogen economy
L.Aiche-Hamane, M.Belhamel, M.Hamane Estimation of hydrogen production from wind power in the south of Algeria	21
A. Bouzidi, N. Benramdane, M. Medles, S. Bresson, C. Mathieu, B. Khelifa, R. Desfeux, M. El Marssi Structural and vibrational properties of spray pyrolysed molybdenum oxide thin films	26
Solar energy
S. Ben Ahmed, M.M. Tlili, M. Ben Amor Optimization of an antiscale treatment to prevent scaling of a solar desalination unit using evaporation-condensation principle	32
J.L. Canaletti, G. Notton, C. Cristofari New concept of solar air heater integrated in the building	39
H. Chemani, B. Chemani Terra cotta bricks in matter insulating and light by coal addition in an argillaceous mass	45
A. El Jouni, R. El Bachtiri A maximum power point tracking fuzzy logic controller for photovoltaic pumping system	50
Wind energy
S. Bousalem, R. Maouedj, B. Benyoucef Optimizing the integrate output of a wind electric water pumping system	57
A. Coustou A major innovation: the vortex tower power stations (self secure vortex towers)	62
R. Calif, R. Blonbou Analysis of the power output of a wind turbines cluster in the Guadeloupean archipelago	68
I.K. Dobrev, F. Massouh Modeling of wind turbines using hybrid models	74
Small and micro hydro-power plants
M. Chennani, I. Salhi, S. Doubabi Study of the regulation of a micro hydroelectric power plant prototype	79
Carbon nanostructures
K. Benrachedi, B. Chemani Chemical and physical activation of olive-mill waste water to produce activated carbons	85
Basic problems of energy and renewable energe
L. Essaleh Effect of the strong magnetic field on the Mott-variable range hopping parameters in n-type copper indium diselenide	90
L. Essaleh Mott-variable range hopping mechanism in n-type CuIn₃Se₅	95
M. Boukendil, A. Abdelbaki, Z. Zrikem Numerical study of coupled heat transfers through a vertical cavity with alveolar walls	98
Energy and ecology
O. Curea, H. Camblong, A. Llaria, I. Vechiu, D. Marin Increasing public awareness of renewable energies and electrical consumption reduction: ESTIA�s approach	103
H. Chemani, B. Chemani Valorization of the sawdust for the improvement of the mechanical-physical properties and obtaining a light ceramic product	111
L. Daoudi, M.E. Saidi Floods in semi-arid zone: example of the Ourika (High Atlas of Marrakech, Morocco)	117
B. Djahed, Y. Amar, A.B. Kandouci, A. Taleb, S. Lebid, M. Anani Evaluation of the Sidi Bel Abbes atmospheric pollution grade and its risks over health	124
F. Toumi (Benali), M. Benyahia, A. Rahmani, M. Aicha Analyses failure reasons of the development schemes of the steppe and role of Tetraclinis articulata vahl master in its eco-development	134
F. Toumi, A. Rahmani, M. Benyahia, M. Aroussi Tetraclinis articulata regeneration (the Thuya of the Maghreb) and its resistance to human caused deteriorations: case of fire	140
K. Boulaajoul, J.P. Dallas, S. Villain, J.A. Musso, M. Mesnaoui, A. Sedki The differentiation of hospital waste incineration ashes an academic case: the Marrakech hospital	147
Environmental impacts associated with ocean thermal energy conversion	155
Information
OTEC - state of the art and present status	158
P. Saint-Gregoire A climatic hell ... in paradise emergency call for the first climatic refugees	163
1st page of cover: the solar furnace of CNRS in Odeillo (South of France). A large parabolic refector constitured of 9500 mirrors.