Orthodontic miniscrews gained popularity in the last decade due to the possibility of reduced treatment time, low cost, small dimensions and low morbidity rate. Absolute anchorage with no dental side effects make orthodontic mini implants an attractive choice for orthodontists. Although these advantages provide optimal clinical solutions, some characteristics must be taken into account when cho...

Austrian soils from mainly historical mining and smelting sites were separated into four particle size fractions (coarse sand, fine silt clay) to distinguish the possible origins pathways of heavy metals. Each fraction was extracted with aqua regia determine pseudo-total content CaCl2 available The soil mineralogical composition < 2000 µm determined by X-ray diffraction (XRD). In general, conce...

The hydrometallurgical method of copper leaching from scrap electronics is commonly undertaken using pulverized printed circuit boards. Though studies on the use organic acids like citric and oxalic for removal are well documented, those malonic acid rare. Herein, we report investigation efficiencies mixtures hydrogen peroxide unpulverized PCB by Box-Behnken design theoretical determination mos...

Herein, a simple and effective approach is reported for the in situ generation and regeneration of a Au nanorod (AuNR) monolayer inside a glass/silica-based, closed-surface flow channel. The density of the AuNR monolayer in the flow channel can be easily modified by varying the concentration of the AuNR and the cetyltrimethylammonium bromide as well as the incubation time. The fabricated AuNR m...

The geochemical fingerprint of sediment retrieved from the banks of the River Manzanares as it passes through the City of Madrid is presented here. The river collects the effluent water from several Waste Water Treatment (WWT) plants in and around the city, such that, at low flows, up to 60% of the flow has been treated. A total of 18 bank-sediment cores were collected along the course of the r...

Uranium nitride (UN) has been proposed as an accident tolerant fuel due to its enhanced thermal properties compared the standard UO2. However, low oxidation resistance, implementation in water cooled reactors not allowed. A method improve corrosion resistance involves doping with oxide scale forming elements such aluminum or chromium. In this work, UN microspheres were produced by internal gela...

Delonix regia gum (DRG) is a natural polysaccharide obtained from the endosperm of Delonix regia seeds, chemically classified as galactomannan. The objective of the present study was to derivatise DRG to carboxymethylated Delonix regia gum (CMDRG) using non aqueous method and to overcome limitations of natural polymer viz, fall in viscosity on storage, susceptible to microbial contamination, an...