there are many effective chemothereutic agents used in influenza disease which some of them inhibit virus replication by interfering with fluv (influenza virus) viral binding or its penetration into cell membrane. a series of polyoxometalates compounds such as pom-523 and pm-504 have been synthesized and have showed inhibitory effects on viruses. in this study we examined anti influenza activit...

As part of the Western Arctic Shelf–Basin Interactions (SBI) project, the production and fate of organic carbon and nitrogen from the Chukchi and Beaufort Sea shelves were investigated during spring (5 May–15 June) and summer (15 July–25 August) cruises in 2002. Seasonal observations of suspended particulate organic carbon (POC) and nitrogen (PON) and large-particle (453mm) size class suggest t...

Two POM-pillared 3D porous compounds, [Cu(I)Cu(II)(Cu(II)fcz)(2)(H(2)O)(5)(PMo(VI)(10)Mo(V)(2)O(40))].6H(2)O () and [Cu(I)(2)(Cu(II)fcz)(2)(H(2)O)(2)(PMo(VI)(8)V(V)(3)V(IV)(3)O(42))].6H(2)O () (Hfcz = fluconazole, (1-(2,4-difluorophenyl)-1,1-bis[(1H-1,2,4-triazol-1-yl)methyl]benzyl alcohol) have been constructed based on different polyanions, (Cufcz)(2)(2+) macrocations and copper cations by th...

Few studies have examined the partitioning of organic matter in upwelling systems, despite the fact that these systems play a key role in carbon and nitrogen budgets in the ocean. We examined the production and partitioning of phytoplankton-derived organic matter in deck incubations off Oregon during the upwelling season. During exponential growth of the phytoplankton, $78% of total accumulated...

The covalent incorporation of inorganic building blocks into a polymer matrix to obtain stable and robust materials is a widely used concept in the field of organic-inorganic hybrid materials, and encompasses the use of different inorganic systems including (but not limited to) nanoparticles, mono- and polynuclear metal complexes and clusters, polyhedral oligomeric silsesquioxanes (POSS), polyo...

Genetic fingerprinting demonstrated in previous studies that differently sized soil particle fractions (PSFs; clay, silt, and sand with particulate organic matter (POM)) harbor microbial communities that differ in structure, functional potentials and sensitivity to environmental conditions. To elucidate whether specific bacterial or archaeal taxa exhibit preference for specific PSFs, we examine...

Background Mono-specific aquaculture effluents contain high concentrations of nutrients and organic matter, which affect negatively the water quality of the recipient ecosystems. A fundamental feature of water quality is its transparency. The fraction of dissolved organic matter that absorbs light is named chromophoric dissolved organic matter (CDOM). A sustainable alternative to mono-specific ...

Continental shelves are believed to play a major role in carbon cycling due to their high productivity. To improve our understanding of carbon dynamics on continental margins, a dissolved organic matter (DOM) model was developed and imbedded within an existing coupled ocean circulation-biogeochemical model of the U.S. East coast. A model simulation with the DOM module was compared with the refe...