Copper is an essential trace element for the development of plants due to its importance role in the physiology of plants. But it is also a toxic heavy metal with high concentration. Some species grown on sites with high ...

The pollution by lead has become a real problem threatening our ecosystems, with detrimental effects on crop production and on biodiversity. This work came in the perspective to study the chemical behavior of Vicia faba ...

Since the industrial revolution, the intensification of polluting activities contributed to the contamination of soil and it is extending to the planetary scale. Considering this phenomenon, some plants developed, the ...

Copper is an essential oligoelement for the plants nutrition, phototoxic at very high concentration. The contamination of soil by copper is present when anthropogenic inputs are important. It means that when its content ...

The pollution of the soil is one of the environmental problems most dangerous, in this context in our laboratory (biodiversity and conservation of soil water) we tried to make the study of the effect of salinity and lead ...

The aim of this work was to isolate the DNA from the sheep blood and to analyze the DNA by spectrophotometry UV. We first collected the sheep blood at the Mostaganem slaughterhouse in EDTA tubes. To carry out the extraction ...

The aim of this work is to study the susceptibility of four different strains and to select some resistant isolates. The results revealed that the Enterobacter sp strain was sensitive to all antibiotics tested, Staphylococus ...

Viruses exhibit great diversity in all their characteristics. In this document we give a definition of viruses then their characteristics that concern their genome (DNA or RNA and its polarity), their structure enveloped ...