Introduction Focus: Early (800-1500) commodity money systems (coins) Introduction Stylized facts about evolution of commodity money systems: 1 Started with a single silver coin Initially same size across countries Over time, debased in some countries, not debased in others 2 Next added a second silver coin If original silver coin small, then new silver coin larger If original silver coin large,...

In this critical and timely review, the effects of anisotropic silver nanostructures on the emission intensity and photostability of a key fluorophore that is frequently used in many biological assays is examined. The silver nanostructures consist of triangular, rod-like, and fractal-like nanoparticles of silver deposited on conventional glass substrates. The close proximity to silver nanostruc...

Laboratory studies have been carried out on the processing of gold-bearing concentrate from “Jamgyr” deposit using JIN CHAN reagent. The influence concentration CHAN, duration leaching, temperature solution were studied. As a result research, extraction gold and silver into cyanide-free technology was 97,5% 96%, respectively. obtained solutions by method sorption MA940BG (gold) ion-exchange res...

It was reported that during silicon etching, silver was subjected to have a controversial role. Some researchers debate that silver protects silicon, and, at the same time, other ones confirm that silver catalyzes silicon underneath. In this paper, we give experimental results arguing the dual role that silver has during the formation of silicon nanostructures. We give a proof that the role of ...

introduction: infection is the most common complication of burn and one of the most important causes of mortality and morbidity in burned patients. topical antibiotics have important role in prevention and treatment of infection and reduction of mortality in burned patients. increases of use of antibiotics cause microbial resistance. methods: to determine microbial resistance to three topical a...

oxidation of ethylene to ethylene oxide over silver catalyst and selenium modified catalyst has been studied by continuous flow and pulse techniques over the temperature range of 230-280 °c. the results are discussed in terms of reaction mechanisms proposed by others, rejecting mechanisms which involve peroxide formation. it has been shown that not only selectivity towards ethylene oxide produc...

objective(s): for the development of reliable, ecofriendly, less expensive process for the synthesis of silver nanoparticles and to evaluate the bactericidal, and cytotoxicity properties of silver nanoparticles synthesized from root extract of croton bonplandianum, baill. materials and methods: the synthesis of silver nanoparticles by plant part of croton bonplandianum was carried out.  the for...

We describe two reagentless methods of silver deposition for metal-enhanced fluorescence. Silver was deposited on glass positioned between two silver electrodes with a constant current in pure water. Illumination of the glass between the electrodes resulted in localized silver deposition. Alternatively, silver was deposited on an Indium Tin Oxide cathode, with a silver electrode as the anode. B...

In recent years, numerous studies have provided converging evidence that word meaning is partially stored in modality-specific cortical networks. However, little is known about the mechanisms supporting the integration of this distributed semantic content into coherent conceptual representations. In the current study we aimed to address this issue by using EEG to look at the spatial and tempora...