To assess environmental risks related to the mobility and toxicity of AgNPs, chemical availability AgNPs polyvinylpyrrolidone-coated (PVP-AgNPs) in three agricultural soils was quantified a pot experiment. Porewater collection soil extractions with 0.01 M CaCl2, 0.4 Glycine (pH 1.5) 0.05 NH4-EDTA were performed. The effect on exoenzyme activities also assessed. concentration low (<0.4% <0...

Functional polymeric membranes with antibacterial properties have gained significant importance in many applications. Silver NPs offer advantage over other materials for their effective and being safer humans at low concentrations. The synthesis of silver may not always be environmental friendly incorporation the polymer is usually a multistep process. In this study, PVDF/PVP/AgNPs electrospun ...

OBJECTIVE To investigate the value of spectral CT imaging in the diagnosis and classification of liver cirrhosis during the arterial phase (AP) and portal venous phase (PVP). MATERIALS AND METHODS Thirty-eight patients with liver cirrhosis (Child-Pugh class A/B/C: n = 10/14/14), and 43 patients with healthy livers, participated in this study. The researchers used abdominal spectral CT imaging...

The efficient separation of ultrafine coal is a challenging process due to the particle size and gangue entrainment. In this study, polymer, polyvinylpyrrolidone (PVP), was introduced as regulator for beneficiation. addition PVP improved combustible recovery clean decreased ash content. This effect also presented by selectivity index. regulation mechanism investigated using diverse methods. ads...

In this work, the structural features of spherical gold nanoparticles (NPs) decorated with highly grafted poly(styrene) (PS), poly(vinylpyridine) (PVP) and PS-PVP diblock copolymer brushes immersed in a good solvent are investigated by means of Dissipative Particle Dynamics (DPD) simulations as a function of grafted chain length and of homopolymer and copolymer chain composition. For NPs grafte...

Efavirenz belongs to Class II under BCS and exhibit low and variable bioavailability due to its poor aqueous solubility. As such it needs enhancement in the dissolution rate and bioavailability to derive its maximum therapeutic efficacy. The objective of the present investigation is to study the complexation of efavirenz with two cyclodextrins, βcyclodextrin (βCD) and hydroxypropyl β-cyclodextr...

A one-pot synthesis method has been developed for preparation of silver nanoparticles in aqueous poly (vinyl pyrrolidone) (PVP) solution by synchrotron X-ray radiation. The hydrated electrons (eaqˉ) and hydrogen atom radical (H·), products of radiolysis of water molecules by synchrotron X-rays brings about the reduction of the metal ions, resulting in homogeneous nucleation and nanoparticle for...

Here we report on the organometallic synthesis of polyvinylpyrrolidone (PVP)-stabilized palladium-rhodium nanostructures that display high electrochemical properties when used as carbon-supported electrodes (PdxRh1-x-PVP/C) for methanol oxidation reaction (MOR). These were synthesized by hydrogenation tris(dibenzylideneacetone)dipalladium(0) (Pd2(dba)3) and tris(allyl) rhodium (Rh(?3-C3H5)3) co...

PLLA fibrous tissue scaffolds with controlled fiber nanoscale surface roughness are fabricated with a novel centrifugal jet spinning process. The centrifugal jet spinning technique is a highly efficient synthesis method for micron- to nano-sized fibers with a production rate up to 0.5 g min(-1). During the centrifugal jet spinning process, a polymer solution jet is stretched by the centrifugal ...

The solution-cast method was used to synthesize magnesia (MgO) nanoparticles filled poly(vinyl alcohol) (PVA) and pyrrolidone) (PVP) blend matrix (80/20 wt %) based polymeric nanocomposite (PNC) films (i.e., [PVA–PVP]–x % MgO; x = 0, 0.06, 0.3, 0.6, 3.1, 6.25). Most of these PNC materials structures are amorphous, according an X-ray diffraction investigation. surface smooth homogeneous under SE...