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    ABSTRACT: At the dawn of the twenty-first century, one of the major problems of mankind is to combine the energy, the respect for environment. A problem of sustainable development has been clearly demonstrated in the Earth Summit in RIO (2012). Among the major battles to be fought in this century for the survival of the planet is to include energy efficiency as an international political priority, reduce emissions of greenhouse gases. Renewable energy, inexhaustible, clean, are needed in these conditions as a priority.
    International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, TMREES 2014 - EUMISD, Beirut; 12/2014
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    ABSTRACT: This study presents a feasibility analysis of grid connected photovoltaic system introduction to a dairy farm located in Mitidja plain (north Algeria) to promote farming sustainably. Real load data from ITELV BabaAli dairy farm of 26 dairy cows is used. The farm electricity consumption is mainly for milk production equipments and the cattle housing. The system is optimized by HOMER software using Mitidja global irradiation and the farm load profile. The electricity tariffs and the photovoltaic system components are modelled according to the Algerian market. Viability was determined according to the net present cost, electricity power flow and CO2 saving potential. According to the optimization criteria, two optimal systems that meet the dairy farm load of 23.6kWh/day have been found. The first optimized system offers a renewable electricity with an optimal cost of 9.7c$/kWh, and the second optimized system has a net annualized surplus electricity of 26.45MWh and a greenhouse gases mitigation of 554 tons over the system lifetime.
    International Conference on Technologies and Materials for Renewable Energy, Environment and Sustainability, TMREES 2014 - EUMISD, Beirut; 12/2014
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    ABSTRACT: Particulate growth in parenteral product frequently results in product recalls causing drug shortages. While this is mostly attributed to quality issues in a firm, particulates growth could also be due to inadequate product, process, or environmental understanding. Therefore, the objective of this study was to use indomethacin sodium trihydrate (drug) as a model drug for lyophilization and evaluates short-term stability with respect to particulate growth at different storage temperatures. Under aseptic condition, each vial filled with filtered drug solution was lyophilized, and stoppered in LyoStar3. Crimped vials were kept at 5 °C, 15 °C, 25 °C, 25 °C/60%RH, and 40 °C/75%RH. At predefined time interval, samples were characterized using X-ray powder diffraction (XRPD), thermal, and spectroscopic method. Lyophilized formulation showed four thermal events: 60–90 °C demonstrating glass transition, 110–160 °C showing recrystallization exotherm,170–220 °C exhibiting endotherm of potential polymorph, and 250 °C showing melting endotherm. XRPD of the lyophilized powder demonstrated peak at 2θ 11.10. Spectroscopic studies of lyophilized powder indicated alteration in symmetric and asymmetric carboxylate peaks over time indicating initiation of crystallization and crystal growth. Reconstitution studies indicated higher reconstitution time after six weeks for sample stored at 40 °C/75%RH. Furthermore, reconstituted solution showed presence of particulates after 8 weeks storage. These studies suggest that particulate growth can stem from poorly developed formulation and not necessarily due to frequently ascribed filtration issues.
    International Journal of Pharmaceutics 10/2014; 473(1-2):545-551. DOI:10.1016/j.ijpharm.2014.07.035


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    Route de l'Observatoire, Bouzareah, 16340, Algiers, Algeria
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    Noureddine YASSAA
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Proceedings of SPIE - The International Society for Optical Engineering 08/2008; DOI:10.1117/12.794012
29th European Photovoltaic Solar Energy Conference and Exhibition, Amsterdam, The Netherlands; 09/2014

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