fish larvae experience major cellular and biochemical changes during their early life stages.the aim of the present study was to evaluate alterations in the antioxidant status and values oflipid peroxidation and vitamin c content during the different life developmental stages ofhypophthalmichthys molitrix. eggs and larvae were sampled at fertilization, organogenesis,eyed egg, hatch, active feed...

Consideration of variation has been identified as one of the fundamental types of statistical thinking, and recent research into the understanding of variation highlights its growing importance. Curriculum needs to reflect this trend. This chapter proposes a model for an integrated approach to curriculum development where consideration of variation is used as the linking thread. The application...

We examined variation in the visual system both within and among seven species of darters, colorful freshwater fishes of the genus Etheostoma. Using microspectrophotometry, we found that darters possess rod photoreceptor cells, single cone photoreceptor cells containing middle wavelength sensitive (MWS) visual pigments, and twin photoreceptor cells containing (LWS) visual pigments. No variation...

Centennial drought characteristics in Equatorial East Africa (EEA) is investigated using the Standardized Precipitation Evapotranspiration Index (SPEI) derived from Climatic Research Unit (CRU) dataset. The spatial pattern of distribution, as well duration, intensity and frequency, are analyzed for SPEI at a 3-month timescale March-April-May (MAM) season. Rotated Empirical Orthogonal Function (...

BACKGROUND Although colorectal cancer (CRC) mortality rates are declining, racial-ethnic disparities in CRC mortality nationally are widening. Herein, the authors attempted to identify county-level variations in this pattern, and to characterize counties with improving disparity trends. METHODS The authors examined 20-year trends in US county-level black-white disparities in CRC age-adjusted ...

The surface ozone time series is analyzed for the seasonal and inter-annual variations and the trend in the following three categories (a) monthly mean (b) 8 hr monthly mean and (c) daily maximum monthly mean measured at 8 (urban/suburban) sites in Portugal for the period 2000–2010. The inter-annual variation of the monthly mean surface ozone time series showed an year to year variation with th...