Ecological and geochemical indicators have been widely accepted as tools with the potential for rapid risk assessment of metal contamination bottom sediments. In this study, we propose a selection such to characterize ecological risks stemming from sediments Chechło reservoir (S Poland). The is located in an area formerly occupied by zinc lead ore mining processing industry. High amounts metals...

Mycotoxins are unavoidable contaminants of food grains, feeds, medicinal herbs, and spices, posing as health threat to animals and humans. The objective of this study was to screen medicinal herbs and spices for fungi and mycotoxin contamination and evaluate their safety. Sixty-three samples were examined for fungal contamination and fungal load determined using standard microbiological method....

Many water-related illnesses show an increase during the wet season. This is often due to fecal contamination from runoff, yet, it is unknown whether seasonal changes in water availability may also play a role in increased illness via changes in the type of primary water source used by households. Very little is known about the dynamic aspects of access to water and changes in source type acros...

The medical industry is challenged by the presence of microorganisms and the negative effects they cause. Deterioration, defacement and odors are all dramatic effects which occur from the microbial contamination of surfaces as varied as carpeting and medical non-woven fabrics. These surfaces can also act as a microbial "harbor", as most offer ideal environments for the proliferation of microorg...

Probing the structure and rotation of the solar core is one of the greatest challenges to helioseismology. We show that the seismic information in the observed low degree solar oscillations which probe the core is severely contaminated. This contamination arises from theSun’s near surfacemagnetic activity. The effect on the oscillation frequencies varies with the solar cycle–vanishing at solar ...

OBJECTIVES This study examined the spatial distribution and the extent of soil contamination by heavy metals resulting from primitive, unconventional informal electronic waste recycling in the Agbogbloshie e-waste processing site (AEPS) in Ghana. METHODS A total of 132 samples were collected at 100 m intervals, with a handheld global position system used in taking the location data of the soi...

the first zagreb index $m_1$ of a graph $g$ is equal to the sum of squaresof degrees of the vertices of $g$. goubko proved that for trees with $n_1$pendent vertices, $m_1 geq 9,n_1-16$. we show how this result can beextended to hold for any connected graph with cyclomatic number $gamma geq 0$.in addition, graphs with $n$ vertices, $n_1$ pendent vertices, cyclomaticnumber $gamma$, and minimal $m...

background : clinical work is important part of nursing teaching. nursing education to their responsibilities for teaching and researching are also responsible for integrating the knowledge and practice and offering service to community. complexity of these responsibilities often cause a great deal of psychological stress.   objective : to determine level of stress perceived by nurse educators ...

investigating transfer of one’s pragmatic knowledge of first language to his second or foreign language has been one of the areas of interest for researchers. however, there are contradictory results even within the scarce studies which have addressed transferability. this study was an attempt to investigate perceived pragmatic transferability of l1 refusal strategies by persian efl learners. s...