OBJECTIVE Examine trends in nonmedical use of prescription stimulants (NPS), including motives, routes of administration, sources, cost, and risk factors. PARTICIPANTS 1,253 college students. METHODS Data were collected annually during academic years 2004-2005 through 2008-2009. Generalized estimating equations analyses evaluated longitudinal trends. Logistic regression models evaluated sta...

Objective(s): An efficient vaccine against TB is an urgent need. TB peptides are safe candidate but they are weak immunogens and needs to be potentiated by adjuvant/delivery systems. The main purpose of the present study was to determine the potential of CHT based NPs containing ESAT-6 antigen of M. tuberculosis for inducing mucosal and systemic immune responses after intranasal and subcutaneou...

   In this paper, a facile and eco-friendly method for the preparation of Ni nanoparticles (Ni NPs) has been described based on the bioreduction of aqueous Ni(II) precursors with Phlomis cancellata Bunge extract. UV-visible spectrum of the aqueous medium containing Ni nanoparticles showed a peak of 390 nm. Since the experimental conditions of this procedure play vital roles in the synthesis...

background: the antifungal activity of selenium nanoparticles (se nps) prepared by klebsiella pneumoniae has been reported previously for different fungi. in the present study, freshly prepared se nps produced by k. pneumoniae were purified and characterized by transmission electron microscopy and energy-dispersive x-ray spectroscopy (eds) and its post antifungal effects for two fungi were eval...

The ability of nanoparticles (NPs) to be promptly uptaken by the cells makes them both dangerous and useful to human health. It was recently postulated that some NPs might cross the plasma membrane also by a non-endocytotic pathway gaining access to the cytoplasm. To this aim, after having filled mature Xenopus oocytes with Calcein, whose fluorescence is strongly quenched by divalent metal ions...

With a growing interest in hydrogen as energy carrier, the efficient purification of from gaseous mixtures is very important. This paper addresses separation using Carbon Molecular Sieves Membranes (CMSM), which show an attractive combination high permeability, selectivity and stability. Supported CMSM containing various amounts aluminium have been prepared novolac acetyl acetonate (Al(acac)3) ...

Bacterial biofilms pose a serious threat to human health, as they prevent the penetration of antimicrobial agents. Developing nanocarriers that can simultaneously permeate and deliver antibacterial agents is an attractive means treating bacterial biofilm infections. Herein, photosensitive metal–organic framework (MOF) nanoparticles were developed promote antibiotics into biofilms, thereby achie...

Polymer nanocomposites containing titanium oxide nanoparticles (TiO2 NPs) combined with other inorganic components (Si-O-Si or/and γ-Fe2O3) were prepared by the dispersion of premade NPs (nanocrystalline TiO2, TiO2/SiO2, TiO2/Fe2O3, TiO2/SiO2/Fe2O3) within a photopolymerizable urethane dimethacrylate (polytetrahydrofuran-urethane dimethacrylate, PTHF-UDMA). The physicochemical characterization ...