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Beni Mellal, Morocco

Malaoui A.,Sultan Moulay Slimane University
Proceedings of the International Conference on Microelectronics, ICM | Year: 2016

In this paper, an electronic temperature control system is presented. This contribution aims to provide a not expensive prototype, fast and accurate, which can be used by research laboratories to control the temperature for electrical measurements. This device is based on the implementation of the PID algorithm in an embedded system at 10-bit Analog/Digital Converter (ADC). The electronic schematics and results of this controller are presented and compared with those with an old 8-bits ADC controller and with a standard laboratory regulator. Initial tests are performed on the temperature control of a photovoltaic junction to measure its intrinsic electrical parameters. The obtained results show the range and levels of the advantages of this device. © 2015 IEEE.

Moubarik A.,Sultan Moulay Slimane University
Journal of Adhesion | Year: 2015

The rheological properties of sugar cane bagasse lignin-phenol formaldehyde (PF) (30% lignin-PF) resins were studied using oscillation tests. The bagasse lignin was introduced in the classic adhesive formulation in order to supply a part of PF. Rheological qualities of optimal lignin-PF (30% lignin-PF) resins and commercial PF resin were assessed by using a rotary rheometer (ARES). Dynamic rheological measurements, performed at low strain in the linear range, are useful to characterize the network properties of resins. The results obtained showed that the time sweep indicates excellent structural stability of optimal lignin-PF (30% lignin-PF) resins and commercial PF resin. The elastic modulus is greater than the viscous one showing a remarkable elastic character of the resins, and the performed frequency sweeps show a typical spectrum of a "weak gels" structure. The time dependence at 125°C shows that the optimum cure time is 7.5 min. © 2015 Taylor and Francis Group, LLC.

Mouayn Z.,Sultan Moulay Slimane University
Journal of Physics A: Mathematical and Theoretical | Year: 2010

A class of generalized coherent states with a new type of the identity resolution is constructed by replacing the labeling parameter z n/√n! of the canonical coherent states by Meixner-Pollaczek polynomials with specific parameters. The constructed coherent states belong to the state Hilbert space of the Gol'dman-Krivchenkov Hamiltonian. © 2010 IOP Publishing Ltd.

Mouayn Z.,Sultan Moulay Slimane University
Journal of Mathematical Physics | Year: 2012

We construct a class of generalized phase coherent states |e iθ γ, α, ε >, indexed by points e iθ of the unit circle and depending on three positive parameters γ, α, and ε, by replacing the labeling coefficient Z n/√n! of the canonical coherent states by circular Jacobi polynomials g n γ with parameter γ ≥ 0. The special case of γ = 0 corresponds to the well-known phase coherent states. The constructed states are superposition of eigenstates of a one-parameter pseudoharmonic oscillator depending on α and constitute a resolution of the identity of the state Hilbert space at the limit ε → 0 +. Closed form for their wavefunctions are obtained in the case α = γ + 1 and their associated coherent states transforms are defined. © 2012 American Institute of Physics.

Aitalioubrahim M.,Sultan Moulay Slimane University
Journal of Dynamical and Control Systems | Year: 2016

We give sufficient conditions to assure the existence of viable solutions for second-order functional differential inclusions in separable Banach spaces. We consider the case when the constraint is moving. © 2016 Springer Science+Business Media New York

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