objective: tooth surface undergoes continuous remineralization and demineralization. the aim of this study was to compare the effect of caseinphosphopeptide-amorphous calcium phosphate (cpp-acp) paste and fluoride gel on the microhardness of demineralized enamel lesions.   methods: frothy eight specimens of premolar teeth were chosen and randomly divided to 4 groups of 12. after the initial mea...

many studies on cold environments have been developed over the past two decades. highmountain freshwater presents high variability of nutrients and chemico-physical parameters, showing variations of ph, oxygen concentration, metals and temperature throughout the year. national park of sierra nevada (granada, spain) (37°032 n 03°182 w), has almost 40 lakes that are reported to be both endemic an...

en 1994, 125 carcases of camel (100 from isfahan and 25 from yazd) in slaughter - houses were studied for parasitic infections. seventy percent of the camels were infected with hydatid cyst and half of the males (50%) had testicular filaria identified as dipetalonema evansi. all the infected male camels except 3, demonstrated sheathed rnicrofilariae in their peripheral blood smears. although so...

statement of problem: chemo-mechanical caries removal is an effective alternative to the traditional rotary drilling method. one of the factors that can influence micro-leakage is the method of caries removal. objectives: to compare the micro-leakage of resin composite in primary dentition using self-etch and all-in one adhesives following conventional and chemo-mechanical caries removal. mater...

this study was based on the hypothesis that “ecotourism is an important instrument in sustainable rural development and ecologically-based landscape planning approaches which take the objectives of socio-economic development and nature conservation have an effective role in this issue”. for this purpose, the necessity of ecologically-based landscape planning approaches in the planning and imple...

introduction: neurohormones like testosterone and estradiol have an important role in learning and memory. the hippocampus is essentially involved in learning and memory, and is known to be a target for estradiol actions. estrogen receptors (ers) are highly expressed in ca1 of rat hippocampus, and mediate the effects of estrogen on learning and memory. estradiol receptor belong to a family of t...

Objective microdeletions of Yq chromosome are the most frequent molecular genetics etiology for the male infertility which usually spans AZFa (azoo spermia factor a), AZFb and AZFc regions. Microdeletions are mostly seen in AZFc region and usually cover genes actively involved in spermatogenesis. Partial AZFc microdeletion may also happen with various spans namely gr/gr, b2/b3 and b1/b3. It is ...

kocho and bula are fermented product of enset (ensete ventricosum). it is the staple food for 20 million people in ethiopia. the aim of study was to isolate, identify and characterize yeast species from fermented kocho and bulla by using biolog micro station. 300 kocho samples were collected from angacha district. 0.1ml of serially diluted samples were streaked on yeast pepton dextrose agar and...

Absfract Despite the enormous research efforts in creating new applications with MEMS, the research efforts at the backend such as packaging and assembly are relatively limited. One reason for this is the level of dimculty involved. One fundamental challenge lies in the fact that at micro-scale, micro mechanical structures are fragile and easy to break they typically will break at the micro-New...