water sorption isotherms of destoned and ground saiadey Jaul type dates were obtained at 30,40.50 C.using the gravimetric methods.Data were analyzed by applying the GAB,BAT ,Smith,Iglesias and Chrife,Halsey ,Henderson and Oswin Models.Isosteric heat of sorption value was calculated using the Clausius-Clapeyron Equation and tried to be as afunction of moisture content of dates. It was found that the experimental data fitted well to ,smith ,I glesias and Chirife ,Halsey, Henderson and Oswin equation, which are suitable for high sugar foods.Isosteric heat of sorption for dates varied from 0,9 to - 1,84 KJ/mol as moisture content changed from 11,0 to 18,0%.

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[…] Dans ce travail de thèse, nous nous sommes intéressés à ces bandes interdites et à ces modes de propagations dans le cas d’un cristal photonique constitué d’une matrice de piliers déposés en surface d’un milieu semi-fini. L’étude des interactions entre les piliers résonants localement avec la surface du milieu semi fini nous a permis d’identifier de nouveaux modes de propagation […]Nous avons également montré comment obtenir une réfraction négative omnidirectionnelle[…] La dernière partie de ce travail a été consacré à l’étude des mécanismes permettant la propagation et le confinement d’ondes guidées[…] .Nous avons également explicité les mécanismes qui permettent de crée ce type d’ondes guidées sub-longeur d’onde et le confinement des photons de surface. / [...] We present the features of the interaction between surface acoustic wave and locally resonant pillar on the top of demi infinite medium. We shown that the photonic crystal we proposed possess an acoustic metamaterial feature for surface acoustic waves in the manner that pillars on the top of the surface introduce new guide modes in the non radiative region of the substrate outside sound cone. We also demonstrate the these guided modes are resonant modes that have frequencies greatly lower than those expected from the Bragg mechanism. […]

(in English) The thesis "Information Policy of European Union in Bangemann's activities period in comparison with USA" is devoted to the Information policy issue applied by the European Union and the United States of America. The thesis structure is defined at the earliest; afterwards the basic terms are followed. The thesis describes the European Union history, which provides context needed to be able to understand the European Union Information policy. The description and evaluation of the European Information policy in Bangemann's activities period in comparison with USA in the same time period and the possibility of mutual utilization of pros of the Information policy of both countries is the aim of this thesis. The following part is occupied with the comparison of EU and USA Information policy at the beginning of 21st century.