Due to the remoteness and difficulty of sampling, 210 Po Pb data are scarce in Southern Ocean. Here, activity concentrations around Prydz Bay austral summer were determined understand their spatial variation evaluate dynamics particle organic matter (POM). The dissolved (D Po) Pb) range from 0.47 3.20 Bq⋅m –3 1.15 2.97 , respectively, with lower values shelf. particulate (P open ocean increase ...

the rehabilitation of sandy desertified land in various dryland ecosystems by different management practices has a great potential to increase aggregate stability and improve soil quality. however, plants in general may have a different ability to sustain soil. the objective was to determine the effects of reclamation practices including haloxylon ammodendron and atriplex canescens plantation o...

In this paper we discuss a weak version of KAM theory for symplectic maps which arise from the discretization of the minimal action principle. These maps have certain invariant sets, the Mather sets, which are the generalization of KAM tori in the non-differentiable case. These sets support invariant measures, the Mather measures, which are action minimizing measures. We generalize viscosity so...

It has been found that polyoxometalates (POMs) can act as mediators in the electrochemical oxidation of lignin in pulps. An electrochemical cell, with a Nafion membrane separating the anode and cathode compartments, was used in the delignification experiments. A softwood kraft pulp was placed in the anode compartment with a buffered 0.01M solution of the polyoxometalate Na5[SiVW11O40]. During e...

Resilient modulus and California Bearing Ratio (CBR) in unbound granular materials are the key technical characteristics of layers in a flexible pavement design. Among the factors affecting these two parameters, the aggregate gradation is the most important. Using particle size distribution curve developed by AASHTO, together with other considerations mentioned in the related regulations have y...

Abstract A dramatically changing business landscape characterized by volatility and uncertainty (which in turn are driven unpredictable alterations of conditions such factors as geopolitical events, climate changes, disasters—natural human causes, reduction food, potable water, critical materials supply along with environmental contamination), has created a situation whereby rethink Production ...

The POM-based inorganic–organic hybrids with different structures were assembled and used as the friction materials to construct TENGs results demonstrated that output performance was closely related dielectric constant.