Artemia salina nauplii are widely used in toxicity assays of synthetic and natural products. Microassays are particularly useful because they allow testing of several products, serially diluted, in a sole microplate. Despite this, following the original method, we have observed systematically about 30% mortality in nontreated controls. Thus, we introduced several modifications that improved the...

The aim of this study was to determine the prevalence of coccidia species in calves in the region of Yüksekova (Hakkari) between March 2004 and July 2004. During this period fecal samples were collected from the rectum of 92 calves. Eimeria spp. and Isospora spp. oocysts were found in eighty-two (89.13%) out of a total of 92 calves. A solution of 2.5% potassium dichromate (K2Cr2O7) was added to...

This study was designed to show the effect of potassium dichromate (24 mg/kg orally for 60 day) in mature male and female. The results experiment rats showed decrease seminiferous epithelia thickness number stage VII cells (spermatogonium, spermatocytes, spermatids) at same time immature female treated with increase diameter ovarian follicles categories (101-200), (201-300) (<400) .It conclu...

The ability of Bacillus sp. MRKV isolated from tannery effluent which shows resistant towards hexavalent chromium potassium dichromate (K2Cr2O7) was evaluated in this study. The bacterial strain was assayed for its reducing ability towards K2Cr2O7. The study revealed that the isolated strain has the ability to reduce the hexavalent chromium and the optimal conditions required for the chromium r...

BACKGROUND A nation-wide Norwegian Patch Test Registry (NOLAR) was established in 2005 as a collaboration between six dermatology departments. International, multi-centre studies have documented great variability in the frequency of positive patch test reactions, considered as mainly due to heterogeneity of test populations. OBJECTIVES To analyse the variability of positive test reactions by ...

The work demonstrated that a low-cost spectrometer and ImageJ serve as an accurate, reliable, robust model tool for learners to grasp abstract concepts in the Introductory Physics Lab Course context. design was self-paced while promoting active peer learning students. Image analysis within experimental activity adds novelty of lesson. Within accuracy, measurement shown correctly identify absorp...