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The paper aims to improve biodiesel production from used cooking oils using response surface methodology (RSM). The influence of important factors on biodiesel yield has been investigated by employing a 5-level-3-factor central composite design…

Le monde, actuellement, est confronté à deux crises majeures ; l’épuisement des ressources énergétiques fossiles accompagné d’une dégradation de l’environnement. Le biodiesel, c’est-à-dire les mélanges de mono alkyle d’esters d’acides gras obtenus…

Le monde, actuellement, est confronté à deux crises majeures ; l’épuisement des ressources énergétiques fossiles accompagné d’une dégradation de l’environnement. Le biodiesel, c’est-à-dire les mélanges de mono alkyle d’esters d’acides gras obtenus…

The concept of convexity and its various generalizations is important for quantitative and qualitative studies in operations research or applied mathematics. Recently, E-convex sets and functions were introduced with important implications across…

The Algerian electric system consists of the northern interconnected grid, the “Pôle In Salah – Adrar – Timimoun” regional grid and many mini-grids supplying dispersed localities in the Great Algerian South. Although these mini-grids share, as of…

New occupants of the oval office tend usually to be distinct in how they conduct foreign policy and President Obama is no exception. In this regard, Obama came to office largely because he promised to depart from his predecessor’s unilateral and…

New occupants of the oval office tend usually to be distinct in how they conduct foreign policy and President Obama is no exception. In this regard, Obama came to office largely because he promised to depart from his predecessor’s unilateral and…

Among the first stages of a research that we began to conduct since January 2018 around a fairly new object represented by the shopping centers newly established in the territory of the new city of Ali Mendjeli (Constantine); we carried out a…

In this article, an analysis of the integration of nanofluids and their applications in the field of solar energy has been discussed. Practically, several factors affect the physical properties of nanofluids. The use of nanofluids as an absorbent…

In this article, an analysis of the integration of nanofluids and their applications in the field of solar energy has been discussed. Practically, several factors affect the physical properties of nanofluids. The use of nanofluids as an absorbent…
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