thirteen environmental elements were distinguished in the livers of various species of fish thathave been sampled from 15 sites in a restricted area of the khorramabad river basin in lorestan province(west of iran). sites sampled represented agricultural, mining, mixed, and urban/recreation land uses andbackground conditions. lithium and silver were not detected at any of the sites. the minimum...

Examining the relevance of 'animal personality' involves linking consistent among- and within-individual behavioural variation to fitness in the wild. Studies aiming to do this typically assay personality in captivity and rely on the assumption that measures of traits in the laboratory reflect their expression in nature. We examined this rarely tested assumption by comparing laboratory and fiel...

The multi-robot exploration problem is to explore an unknown graph of size n and depth d with k robots starting from the same node. For known graphs a traversal of all nodes takes at most O(d + n/k) steps. The ratio between the time until cooperating robots explore an unknown graph and the optimal traversal of a known graph is called the competitive exploration time ratio. It is known that for ...

The Dolatabad area located in SE Iran is a well-endowed terrain owning several chromite mineralized zones. These chromite ore bodies are all hosted in a colored mélange complex zone comprising harzburgite, dunite, and pyroxenite. These deposits are irregular in shape, and are distributed as small lenses along colored mélange zones. The area has a great potential for discovering further chromite...

Abstract Representativeness and quality of collected meteorological data impact accuracy precision climate, hydrological, biogeochemical analyses predictions. We developed a comprehensive Quality Assurance (QA) Control (QC) statistical framework, consisting three major phases: Phase I—Preliminary exploration, i.e., processing raw datasets, with the challenging problems time formatting combining...

The general focus of this work is to explore, better understand, model and predict the interactive dynamics and variability of sub-mesoscale and mesoscale features and processes in the Philippine Straits region and their impacts on local ecosystems through i. physical-biogeochemical-acoustical data assimilation of novel multidisciplinary observations, ii. adaptive, multi-scale physical and biog...