carbonates are among the most common soil constituents in arid and semiarid zones. they exhibit many significant differences in their chemical and mineralogical, suite, origin, physical and micromorphological properties and consequently in their activities in soil. the differences cause different properties of calcareous soils. six profiles of aridisols and inceptisols with carbonate accumulati...

Actiniopteris radiata (Swartz) Link. is a fern belonging to the family Pteridaceae. The spores collected from the pinnae of A.radiata was inoculated in Knudson’s C and Knop’s medium at pH 5.8. The ontogenic pattern such as germination type, prothallial development and micromorphological changes were studied in detail. The germination of the spore was Anemia type. The gametophyte development was...

This is the case, in particular, because a very high variability was observed both in the thin sections and in the field and the information provided by micromorphology was only of local significance, restricted to the area of thin sections. Comparison of thin sections with the field data shows that micromorphology has no potential for extrapolation of results to the level of context or phase, ...

in this study, micromorphological properties of some samples collected from pedons polluted with petroleum refinery wastes and some adjacent unpolluted pedons were studied. after description of the studied pedons, disturbed and undisturbed samples were collected for physicochemical and micromorphological analyses. the results showed that the physicochemical properties (i.e. structure, bulk dens...

In order to evaluate the influence of masticatory movement on cranial bone mineral density (BMD) and osteocyte and osteoblast micromorphology, we conducted a study in rats fed with solid feed (n=10) and powdered feed (n=10). Cranial BMD was measured by dual X-ray absorptiometry (DXA). Osteocyte morphology was evaluated by light microscopy. In addition, some of the tissue was treated with EDTA-K...

gypsiferous soils occur in xeric, ustic, and aridic moisture regimes. environmental conditions affect the mode of gypsum formation. gypsiferous soils in fars province, southern iran, are found in piedmont plains, flood plains, and alluvial plains. the objective of this work was to investigate the micromorphology of gypsum crystals formed under different soil moisture regimes. the results indica...