background and objective: nanoscopic life forms called nanobacteria or calcifying nanoparticles (cnp) are unconventional agents. these novel organisms are very small (0.1 to 0.5 microns) and possess unusual properties such as high resistance to heat and routine antimicrobial agents. nanobacteria are 100 times smaller than bacteria and protected by a shell of apatite, so they could be as candida...

It is known that the period of the eclipsing binary V 505 Sgr changes, and that the changes can be explained at least partly by a light-time effect. The system is also known as a speckle binary. In this paper parameters of the third body orbit are suggested in order to explain both sets of data. Some discrepancies in the size of the orbit and radial velocity data remain. Next periastron passage...

objective: aminoglycosides are highly potent, broad-spectrum antibiotics with many desirable properties for the treatment of life-threatening infections. escherichia coli (e. coli) is the most common cause of urinary tract infection (uti). antibiotic resistance has recently become prevalent. enzymatic inactivation of aminoglycosides by aminoglycoside-modifying enzymes is the main mechanism of r...

background and objective: to evaluate extended spectrum betalactamase (esbl) positive strains of klebsiella pneumonia and escherichia coli in positive bacterial cultures. materials and methods: in this analytical cross-sectional study, between march 2006 and march 2007, 170 bacterial isolates including 133 cases of e. coli and 37cases of k. pneumonia were examined. all cases underwent double di...

objective: the present study was conducted to detect possible chemicals (phytoconstituents), prove ethno-medicinal value of the plant, and investigate antimicrobial, anthelmintic, and total phenolic content of crude methanolic extract of the solanum violaceum plant.  materials and methods: phytochemical screening was carried out using different chemical group test methods. in anthelmintic activ...