this study was performed to investigate the effect of ag+ as an elicitor on the activity of antioxidant enzymes, content of h2o2, accumulation of total tocopherol and antioxidant activity in hairy root cultures of silybum marianum (l.) gaertn. the hairy roots were treated with 2 mm ag+. the treated and non-treated hairy roots were harvested in the same time and data on h2o2 content, dpph, tocop...

Ag and Ag@MgO core-shell nanoparticles (NPs) with a diameter of d = 3-10 nm were obtained by physical synthesis methods and deposited on Si with its native ultrathin oxide layer SiO x (Si/SiO x ). Scanning electron microscopy and transmission electron microscopy (TEM) images of bare Ag NPs revealed the presence of small NP aggregates caused by diffusion on the surface and agglomeration. Atomic ...

INTRODUCTION Affordable and sensitive screening methods for acute hepatitis C (HCV) are necessary to successfully intervene in the current HCV epidemic among HIV-positive men having sex with men. HCV core antigen (Ag) testing has been proven effective in diagnosing chronic HCV-infected patients at low costs. We studied the characteristics of HCV Ag testing in acute HCV-infected HIV-positive pat...

This review article presents the collected recent findings and advancements in understanding and manipulating the electronic properties of the Au/Ag NP system from the standpoint of controlling the characteristics of heterostructured core-shell NPs. The discovery of the electronic transfer effect through analysis of both Ag-Au and Au-Ag type NPs inspired the analysis of the resulting enhanced p...

Pt layer thickness in [email protected] core-shell nanoparticles prepared via the seeded-growth method can be controlled synthesis stage. However, their oxygen reduction reaction (ORR) activity is not solely dependent on overlayer. Ag present shell and ORR kinetics are facilitated by increasing with a lessened amount surface. More details found article number 2201167, Önder Metin, Sarp Kaya, co...

Core-shell nanostructures have found applications in many fields, including surface enhanced spectroscopy, catalysis and solar cells. Titania-coated noble metal nanoparticles, which combine the surface plasmon resonance properties of the core and the photoactivity of the shell, have great potential for these applications. However, the controllable synthesis of such nanostructures remains a chal...

• CO oxidation over Pd 75% Ag 25% (100) studied by NAP-XPS. Reversed hysteresis in 2 formation during heating and cooling ramps observed. Hysteresis behaviour depends on exposure, rate, maximum temperature, sample history. Dynamic changes Pd/Ag surface composition cycling to 450 °C or 600 Relatively facile kinetics of segregation that proceeds even at ambient temperature. The dynamic the near-s...

chromatography (HPLC) and suspended in deionized water from a Milli-Q device (18.2 MΩ, Millipore, Molsheim, France). Hydrogen tetrachloroaurate trihydrate (HAuCl 4 • 3H 2 O), sodium citrate, AgNO 3 were bought from Sigma-Aldrich and used as received. All glassware was soaked in aqua regia with 24 h for clearance, then rinsed at least three times with deionized water and dried in an oven. Gold@s...