in this work, all-solid-state potentiometric pvc membrane sensor was introduced for fast andsimple monitoring of mercury ions in waste water samples. the all solid sate electrode is made based on aconductive composite of graphite, reduced graphene oxide, epoxy resin on a copper wire. a thin layer pvcmembrane is then coated on the surface of the new conducting transducer. pvc membrane is compose...

The substrate N1, N3, N5-tris(2-hydroxyphenyl)benzene-1,3,5-tricarboxamide (Sensor A) was prepared in the reaction of 1,3,5-benzenetricarboxylic acid (trimesic acid) and o-aminophenol ethanol. organic sensor fulfills chemiluminescent requirements including a luminophore, spacer, suitable binding receptor that distress probe’s luminescent features, providing selective sensitive detection mercury...

Purpose. To develop a method of using salts humic acids obtained from brown coal Ukraine for sorption heavy metal ions and their extraction ultrafiltration membranes. Methodology. Unique laboratory equipment has been developed to determine the capacity substances with concentration 0 20 mg/l in relation (Cu2+, Pb2+, Cd2+, Hg2+, Zn2+, Co2+) 5 mg/l. The results proximate ultimate analyzes, as wel...

To better understand the role played by the autonomic nervous system in essential hypertension, we used autoregressive power spectrum analysis to study the noncasual oscillations in RR interval, blood pressure, and skin blood flow in 40 subjects with mild to moderate hypertension and in 25 age-matched control subjects at low frequency (index of sympathetic activity to the heart and the peripher...

The physical parameters for the production of thermostable, alkaline lipase from Arthrobacter sp. BGCC# 490 were optimized using response surface methodology (RSM), employing face centered central composite design (FCCCD). The design was employed by selecting pH, temperature and incubation period as the model factors and to achieve maximum yield, interaction of these factors was studied by RSM....

In recent years we have observed photoluminescence from tetrameric Cu(1) [1], Ag(I) [2], and Au(I) [ 31 clusters in solution or low-temperature glasses. In addition, emission from dimeric Au(I) complexes was reported by other groups [ 4,5 1. We assigned the luminescence of the tetramers to metalcentered s-d transitions which are modified by metal-metal interaction in these d’O clusters [ l-31. ...

Bacillus species producing a thermostable phytase was isolated from soil, boiled rice, and mezu (Korean traditinal koji). The activity of phytase increased markedly at the late stationary phase. An extracellular phytase from Bacillus sp. KHU-10 was purified to homogeneity by acetone precipitation and DEAE-Sepharose and phenyl-Sepharose column chromatographies. Its molecular weight was estimated...

Energy generation using microbial fuel cells (MFC) and removing toxic metal ions is a potentially exciting new field of study as it has recently attracted lot interest in the scientific community. However, MFC technology facing several challenges, including electron production transportation. Therefore, present work focuses on enhancing by extracting sugarcane waste. was successfully operated b...

A facile, selective, and sensitive detection method for the Cu2+ ions in environmental and biological solutions has been newly developed by observing the unique CN stretching peaks at ~2108 cm-1 upon the dissociative adsorption of glycine (GLY) in hydrazine buffer on gold nanoparticles (AuNPs). The relative abundance of Cu species on AuNPs was identified from X-ray photoelectron spectroscopy an...