in this research complexation of dioxovanadium(v) with nitrilotriacetic acid (nta) at differentionic strengths (0.1 to 1.0 mol dm-3) of sodium perchlorate as supporting electrolyte and ph rangeof 1.00-2.50 at 25 °c has been investigated by a combination of potentiometric and uvspectrophotometric measurements. stability constants of two species, v0211l- and vo2h2l havebeen calculated. ionic stre...

There is an urgent need to conserve and improve the quality of agricultural soils in coming decades. Decision tools capable providing reliable information about soil are needed, index (SQI) one most used. Principal component analysis (PCA) common methodology calculate it, however some cases fails differentiate properly. Therefore, aim this work assess a SQI through different as network (NTA) co...

Abstract This study investigates the influence of sea surface temperature (SST) in northern tropical Atlantic (NTA) on Indo–western Pacific summer climate by analyzing record-high NTA SSTs 2010. In that time, a decaying El Niño and developing La Niña were accompanied widespread anomalous conditions Pacific. These are typical summers follow events often explained as being due to Indian Ocean war...

The surface of a germanium internal reflectance element (IRE) was modified to bind 6X-histidine (his)-tagged biomolecules. The step-by-step surface modification was monitored via single-pass attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FT-IR). Initially an adlayer of 7-octenyltrimethoxysilane (7-OTMS) was formed on the Ge crystal through the surface hydroxyl groups,...

Networks of timed automata (NTA) are widely used to model distributed real-time systems. Quite often in the literature, the automata are allowed to share clocks, i.e. transitions of one automaton may be guarded by conditions on the value of clocks reset by another automaton. This is a problem when one considers implementing such model in a distributed architecture, since reading clocks a priori...

Particle tracking analysis (PTA) is an emerging technique suitable for size analysis of particles with external dimensions in the nano- and sub-micrometre scale range. Only limited attempts have so far been made to investigate and quantify the performance of the PTA method for particle size analysis. This article presents the results of a validation study during which selected colloidal silica ...

Introduction: Nanoparticle tracking analysis (NTA) enables measurement of extracellular vesicles (EVs) but lacks the ability to distinct between EVs and lipoproteins which are abundantly present in blood plasma. Limitations in ultracentrifugation and size exclusion chromatography applied for EV isolation may result in inadequate EV purification and preservation. In this proof of concept study, ...

Recently, immigration and its socio-economic aspects have been in the centre of European Union leaders’ agenda. In this paper, we apply National Transfer Accounts (NTA) methodology to calculate complete set NTA results for immigrants natives five EU countries. We find that due lower labour income, which cannot be offset by consumption, experience a shorter independence period much aggregate lif...

A successful drug delivery system must overcome complex biological barriers. For particles injected into the blood, one of first and most critical barriers pertains to blood stability circulate through human body. To effectively design vehicles, interactions between as well aggregation behavior, be understood. This work presents a method analyze particle size in plasma using commercially availa...