The objective of this study was to determine the effects of feeding an increased amount of extruded flaxseed with high proportions of n-3 fatty acids (FA) to transition dairy cows on performance, energy balance, and FA composition in plasma, adipose tissue, and milk fat. Multiparous Israeli-Holstein dry cows (n = 44) at 256 d of pregnancy were assigned to 2 treatments: (1) control cows were fed...

in this study, the mineralogical composition and concentration of heavy metals in surfacesediment of north west persian gulf (musa estuary and hendijan coastline) were investigated. fifteensampling sites were selected and the sediment samples were collected using peterson grab sampler in august2013. xrd analyses demonstrated that the sediments of study area are principally composed of calcite,q...

The contamination levels and distribution of heavy metals were assessed in riverbed sediments water column samples from Mura Kimpulande Rivers, both impacted by copper-cobalt gold mining activities. Analyses performed using inductively coupled plasma-mass spectrometry (ICP-MS), atomic absorption (AAS), fluorescence (AFS). Results showed high concentrations Ni, Cu, Zn, As, Cd, Hg samples. rivers...

The heavy metals in atmospheric fine particles are of great concern to human health. To understand the pollution characteristics and health risks particulate matter with an aerodynamic equivalent diameter ≤2.5 μm (PM2.5) during winter suburb Cangzhou, PM2.5 samples were collected intelligent medium-flow sampler from January February 2019. Fe, Cu, Mn, Pb Zn contents determined via inductively co...

Maharlu Lake, located in the SW of Iran, has acted as a sink for various wastewater discharges in the last few decades. This study aimed at assessing potentially toxic elements (PTEs) distribution in sediment, surface and pore water samples of Maharlu Lake. To achieve that, the samples were collected from each compartment and the total concentration of PTEs (Al, Fe, Sc, Cr, Co, Ni, Zn, As, Sb, ...

Sediment management is a fundamental part of reservoir operation, but it often complicated by metal(loid) enrichment in sediments. Knowledge concerning the sources potential contaminants therefore important significance. To address this issue, concentrations and mobile fractions metal(loid)s were determined sediments respective catchment areas six reservoirs. The results indicate that reservoir...

The Bacillus anthracis exotoxin is composed of a lethal factor, a protective antigen, and an edema factor (EF). EF is a calmodulin-dependent adenylate cyclase which elevates cyclic AMP levels within cells. The entire EF gene (cya) has been cloned in Escherichia coli, but EF gene expression by its own B. anthracis promoter could not be detected in E. coli. However, when the EF gene was placed do...

Located in the Puchuncaví Valley (PV) central Chile is one of most important and oldest industrial complexes (ICs) country. The PV affected by anthropogenic emissions from IC where industry a copper smelter refinery. In this context, study assessed profile, concentration, enrichment factors trace elements, both soil Cupressus macrocarpa leaves high-pollution-load area. leaf samples were taken f...

This study examined the spatio-temporality of heavy metal concentrations (Al, Cd, Co, Cr, Fe, Mn, Ni, Pb and Zn) in sediments Lake Bafa, one most important wetlands Turkey’s Aegean region. The evaluated sediment quality according to threshold effect concentration (TEC) probable (PEC) values based on guidelines (SQG), provided a potential ecological risk assessment (PERI) along with indices such...