La contamination des aliments est un probleme majeur pour le consommateur surtout durant la perio... more La contamination des aliments est un probleme majeur pour le consommateur surtout durant la periode estivale dans les pays mediterraneens. L’exploitation des interactions bacteriennes est un nouveau moyen pour lutter contre les germes indesirables. L’objectif de ce travail est la recherche des bacteries lactiques productrices de substances antimicrobiennes vis-a-vis des germes nuisibles. Les methodes microbiologiques et biochimiques ont ete utilisees pour identifier les bacteries presentant une activite antimicrobienne. Neuf isolats de bacteries lactiques ont ete identifies a partir du lait cru de chevre dans les regions de l’Ouest algerien. Les especes dominantes appartenant au genre Lactobacilles sont : Lb. rhamnosus , Lb. plantarum , Lb. casei , Lb. paracasei subsp . paracasei , Lb. acidophilus , Lb. delbrueckii subsp lactis , Lb. fermentum , Lb. paraplantarum et Lactobacillus sakei subsp. sakei . L’etude des interactions a revele la capacite de trois especes Lb. plantarum ( 58) ...
Drought and salinity act simultaneously in tolerance and acclimatization under saline conditions.... more Drought and salinity act simultaneously in tolerance and acclimatization under saline conditions. Therefore, plants subjected to these types of stress should have developed specific structural adaptations at the early stages of development. The solution to these environmental problems is to look for species that are relatively water-efficient and resistant to recurrent episodes of various abiotic stresses such as salt stress. In this study, the salinity tolerance index, ionic homeostasis and osmoprotection were evaluated in A. karroo and A. saligna plants of 90 days old and cultured at various concentrations of NaCl for 21 days. Results showed that salt caused remarkable changes in some growth-related parameters (dry biomass) represented by the salinity tolerance index (STI). Na+, Ca2+, and RatioNa+/K+ content in the leaves increased with salinity levels, while K+ contents were significantly reduced compared to the control in both acacia species. Levels of proline, total free amino ...
In this paper I focused on examining from a historical perspective the development of the social ... more In this paper I focused on examining from a historical perspective the development of the social thematics in Paulo Freire's seven works published in the 1990s compared to his masterpiece "Pedagogy of the Oppressed" written in 1970. In the 1960s and 1970s, 'conscientization' was an important educational tool for people to gain political rights in order to struggle for the transformation of the social structure. In the 1990s however, with the redemocratization process that started in the beginning of the 1980s, people had acquired some political rights and it became necessary to teach them how to use these rights. As a result, in the 1990s, Paulo Freire gives emphasis on the need to construct a democratic and popular school that gives the chance to everyone participate in its construction and "practice" their rights and duties as citizens.
La contamination des aliments est un probleme majeur pour le consommateur surtout durant la perio... more La contamination des aliments est un probleme majeur pour le consommateur surtout durant la periode estivale dans les pays mediterraneens. L’exploitation des interactions bacteriennes est un nouveau moyen pour lutter contre les germes indesirables. L’objectif de ce travail est la recherche des bacteries lactiques productrices de substances antimicrobiennes vis-a-vis des germes nuisibles. Les methodes microbiologiques et biochimiques ont ete utilisees pour identifier les bacteries presentant une activite antimicrobienne. Neuf isolats de bacteries lactiques ont ete identifies a partir du lait cru de chevre dans les regions de l’Ouest algerien. Les especes dominantes appartenant au genre Lactobacilles sont : Lb. rhamnosus , Lb. plantarum , Lb. casei , Lb. paracasei subsp . paracasei , Lb. acidophilus , Lb. delbrueckii subsp lactis , Lb. fermentum , Lb. paraplantarum et Lactobacillus sakei subsp. sakei . L’etude des interactions a revele la capacite de trois especes Lb. plantarum ( 58) ...
Drought and salinity act simultaneously in tolerance and acclimatization under saline conditions.... more Drought and salinity act simultaneously in tolerance and acclimatization under saline conditions. Therefore, plants subjected to these types of stress should have developed specific structural adaptations at the early stages of development. The solution to these environmental problems is to look for species that are relatively water-efficient and resistant to recurrent episodes of various abiotic stresses such as salt stress. In this study, the salinity tolerance index, ionic homeostasis and osmoprotection were evaluated in A. karroo and A. saligna plants of 90 days old and cultured at various concentrations of NaCl for 21 days. Results showed that salt caused remarkable changes in some growth-related parameters (dry biomass) represented by the salinity tolerance index (STI). Na+, Ca2+, and RatioNa+/K+ content in the leaves increased with salinity levels, while K+ contents were significantly reduced compared to the control in both acacia species. Levels of proline, total free amino ...
In this paper I focused on examining from a historical perspective the development of the social ... more In this paper I focused on examining from a historical perspective the development of the social thematics in Paulo Freire's seven works published in the 1990s compared to his masterpiece "Pedagogy of the Oppressed" written in 1970. In the 1960s and 1970s, 'conscientization' was an important educational tool for people to gain political rights in order to struggle for the transformation of the social structure. In the 1990s however, with the redemocratization process that started in the beginning of the 1980s, people had acquired some political rights and it became necessary to teach them how to use these rights. As a result, in the 1990s, Paulo Freire gives emphasis on the need to construct a democratic and popular school that gives the chance to everyone participate in its construction and "practice" their rights and duties as citizens.
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