We consider the simplest representative of class multiply branched polymer macromolecules, known as a pom-pom structure. The molecule consists backbone linear chain terminated by two branching points with functionalities (numbers side chains) f1 and f2, respectively. In symmetrical case, considered in present study, one has = f2 f total number chains F 2f + 1. Whereas rheological behaviour melt...

A new azide functionalized Anderson polyoxometalate was synthesized, fully characterized and subsequently used as a building block for further POM post-functionalization with organic compounds through a copper catalyzed azide-alkyne cycloaddition (CuAAC) reaction. Optimization of the reaction conditions led to an efficient, fast, convenient and versatile POM coupling method.

The purpose of this research was to (1) determine if different species of wetland vegetation produced characteristically different dissolved organic matter (DOM) based upon both chemical and physical characteristics and (2) determine if any relationships exist between characteristics of DOM derived from freshly senescent tissues of different wetland plant species common to the Florida Everglade...

Filter-feeding invertebrates consume phytoplankton and detritus and therefore serve as important mediators of the exchange of materials from nearshore pelagic to intertidal benthic ecosystems. Here, we evaluated the linkages between nearshore and intertidal systems on temperate rocky reefs on the coasts of Oregon, USA, and New Zealand’s South Island. We used differences in the concentrations of...

This paper is concerned with the numerical solution of polymer melt flows of both extrudate-swell and tube-tooling die-extrusion coatings, using a hybrid finite element/finite volume discretisation fe/fv. Extrudate-swell presents a single dynamic freesurface, whilst the complex polymer melt coating flow exhibit two separate free-surface draw-down sections to model, an inner and outer conduit su...

The design and assembly of metal-organic complexes (MOCs) have attracted considerable attention, because of their diverse topologies and potential applications in areas such as catalysis and materials science [1 – 6]. Polyoxometalates (POMs), as a unique class of inorganic metal oxide clusters, have been regarded as excellent candidates to obtain MOCs due to their controllable shapes and sizes,...

Submit Manuscript | http://medcraveonline.com the heteroatom and M, the addenda atom. Particularly, POMs of Keggin-symmetry are recognized to be used in devices of energy storage such as super capacitors and Li-ion batteries, catalysis and renewable energy applications [2]. POMs present in such systems are susceptible to transfer electronic charge and to anchor at organic or inorganic substrate...

In children, any ureter greater than 7 mm in diameter is considered a megaureter based on measurements in fetuses greater than 30 weeks gestation and children <12 years. Primary megaureter (POM) is a result of a functional or anatomical abnormality involving the uretero-vesical junction. Although the endoscopic and surgical techniques to manage POM are successful, we thought that early interven...