Calcined eggshells (CES) were tested as adsorbent at a low cost for the removal of phenol from the waste water. The shells of Eggs extracts from waste were washed and then dried at a temperature of 60℃ and finally ca...Calcined eggshells (CES) were tested as adsorbent at a low cost for the removal of phenol from the waste water. The shells of Eggs extracts from waste were washed and then dried at a temperature of 60℃ and finally calcined in an oven at the atmospheric air in several temperatures 200℃, 400℃, 600℃, 800℃, 1000℃. The chemical composition of the obtained adsorbs was analyzed by the X-ray diffraction. The isothermal study of adsorption of the phenol was realized for the various adsorbates. It showed that the biggest efficiency of the elimination was attributed to the calcined eggshells to 1000℃with a percentage that reached 37%. The kinetics of adsorption were described by the first rate model. The intra particular distribution is a significant step in the adsorption process of phenol on calcined eggshells (CES). The separation factor gives a favorable adsorption of phenol on the CES.展开更多
Argania spinosa L.(Sapotaceae family),endemic to Morocco,is a multipurpose tree with an important ecological and socio-economical interest.Nevertheless,the sustainability of the agro-forestry system is now threatened ...Argania spinosa L.(Sapotaceae family),endemic to Morocco,is a multipurpose tree with an important ecological and socio-economical interest.Nevertheless,the sustainability of the agro-forestry system is now threatened by overgrazing and over-exploitation leading to an alarming decline in the number of trees.In the present study,inter-simple sequence repeats(ISSR)markers were used to evaluate the genetic variation and to assess the genetic diversity distribution within and among 17 argan populations growing naturally under semi-arid and arid climate.Thus,a total of seven primers generated 260 well-defined bands,with an average of 37.14 bands per primer.Studied populations showed a relatively high level of genetic diversity at species level and low level of genetic diversity at population level.The percentage of polymorphic bands,Nei's gene diversity and Shannon's information index at population and species level were 30.15%,0.164,0.217 and 98.8%,0.172,0.293,respectively.A relative low level of genetic differentiation(Gst=0.39)was in agreement with the results obtained from the analysis of molecular variance(AMOVA).Estimated gene flow was Nm=0.781 among populations.Mantel test revealed a non-significant correlation between genetic and geographic distance(r=0.065,P〈0.05),suggesting that the geographic distribution is not the major factor that shaped the present population genetic structure.The results can help preserve A.spinosa L.tree as an endangered species,however,refining these finding using co-dominant markers is recommended in order to establish conservation strategies.展开更多
Peritoneal loose bodies or “peritoneal mice” are rare well circumscribed benign masses composed of free-floating organized fat necrosis. They are usually asymptomatic and found as “incidentalomas” during Imaging. ...Peritoneal loose bodies or “peritoneal mice” are rare well circumscribed benign masses composed of free-floating organized fat necrosis. They are usually asymptomatic and found as “incidentalomas” during Imaging. Their pathogenesis is not well known. We report a rare case of giant intraperitoneal mice which was clinically misdiagnosed as left seminal vesicle malignancy. A review of the literature is also presented.展开更多
文摘Calcined eggshells (CES) were tested as adsorbent at a low cost for the removal of phenol from the waste water. The shells of Eggs extracts from waste were washed and then dried at a temperature of 60℃ and finally calcined in an oven at the atmospheric air in several temperatures 200℃, 400℃, 600℃, 800℃, 1000℃. The chemical composition of the obtained adsorbs was analyzed by the X-ray diffraction. The isothermal study of adsorption of the phenol was realized for the various adsorbates. It showed that the biggest efficiency of the elimination was attributed to the calcined eggshells to 1000℃with a percentage that reached 37%. The kinetics of adsorption were described by the first rate model. The intra particular distribution is a significant step in the adsorption process of phenol on calcined eggshells (CES). The separation factor gives a favorable adsorption of phenol on the CES.
文摘Argania spinosa L.(Sapotaceae family),endemic to Morocco,is a multipurpose tree with an important ecological and socio-economical interest.Nevertheless,the sustainability of the agro-forestry system is now threatened by overgrazing and over-exploitation leading to an alarming decline in the number of trees.In the present study,inter-simple sequence repeats(ISSR)markers were used to evaluate the genetic variation and to assess the genetic diversity distribution within and among 17 argan populations growing naturally under semi-arid and arid climate.Thus,a total of seven primers generated 260 well-defined bands,with an average of 37.14 bands per primer.Studied populations showed a relatively high level of genetic diversity at species level and low level of genetic diversity at population level.The percentage of polymorphic bands,Nei's gene diversity and Shannon's information index at population and species level were 30.15%,0.164,0.217 and 98.8%,0.172,0.293,respectively.A relative low level of genetic differentiation(Gst=0.39)was in agreement with the results obtained from the analysis of molecular variance(AMOVA).Estimated gene flow was Nm=0.781 among populations.Mantel test revealed a non-significant correlation between genetic and geographic distance(r=0.065,P〈0.05),suggesting that the geographic distribution is not the major factor that shaped the present population genetic structure.The results can help preserve A.spinosa L.tree as an endangered species,however,refining these finding using co-dominant markers is recommended in order to establish conservation strategies.
文摘Peritoneal loose bodies or “peritoneal mice” are rare well circumscribed benign masses composed of free-floating organized fat necrosis. They are usually asymptomatic and found as “incidentalomas” during Imaging. Their pathogenesis is not well known. We report a rare case of giant intraperitoneal mice which was clinically misdiagnosed as left seminal vesicle malignancy. A review of the literature is also presented.
