Groundwater makes up an important part of global freshwater resources, though it is often threatened by overuse of natural resources along with abundant production of wastes in modern society. This study aims to investigate the removal of three heavy metals including nickel, cadmium, and lead from groundwater via electrocoagulation, a suitable method for treatment of water-soluble compounds, de...

In radio, radar , sonar, and seismic signal de tec t ion there is of ten the problem of processing received signals which have been distor ted by a l inear operat ion in the process of being t r ansmi t t ed . Examples are sca t te r ing and mul t ip le -pa th propaga t ion of radio waves. Usual ly the na tu re of th is l inear operat ion cannot be known very precisely in advance, and i t often...

We developed a facile strategy for preparation of heteropoly metalate/graphene oxide nanocomposite as a new ion exchanger for cadmium ion removal from aqueous solution. The synthesized nanocomposite was characterized by X-ray powder diffraction (XRD), UV-Vis spectroscopy, FT-IR spectroscopy and Raman spectroscopy. Our findings indicated that the combination of heteropoly metalate nanoparticles ...

Groundwater makes up an important part of global freshwater resources, though it is often threatened by overuse of natural resources along with abundant production of wastes in modern society. This study aims to investigate the removal of three heavy metals including nickel, cadmium, and lead from groundwater via electrocoagulation, a suitable method for treatment of water-soluble compounds, de...

This study was conducted to investigate organoclay prepared using montmorillonite clay with zinc oxide (ZnO) nanoparticles and a long-chain organic surfactant hexadecyltrimethylammonium bromide for the removal of nitrate ion from aqueous solutions. Adsorbents were evaluated by X-Ray Diffraction (XRD), Fourier Transform Infra-Red (FT-IR),...

Amnonium ion is effectively removed by Reverse Osmosis membranes (Brackish water, BW; Saline water, SW). The removal efficiency of ammonium ion from a solution containing ammonium ion which is not complexed is varying in the range of 5–60%. On the contrary, ammonium ion forms complexes with other ions in water and wastewater removal efficiency was as high as 99% for the synthetic solution which...

Kinemat ica l ly viable space-t ime theories a d m i t t i n g a ve loc i ty-dependent d i la ta t ion fac tor in addi t ion to t h e Loren tz t r ans fo rma t ion between the inertial sys tems a re considered. I t is shown t h a t these theories a re very unsa t i s fac tory , in the sense of leading nei ther to a un ique defini t ion of t ime nor to a unique fo rmula t ion of a dynamics . As ...

W ith th e W eb , h y per text h as b ecom e the p ar ad igm atic r h eto rical s tr u ctu r e o f a g lo bal and d istr ibu ted ar ch iv e. Th is pap er ar g ues that th e s ch o lar ly ar ch iv e is g o ing tho u g h a p r ocess o f h y p ertextu alization that is n o t ad eq uately acco u n ted f o r in th eo r ies on h y per text. A m eth od o log ical ap p ro ach b ased o n G er ar d Gen e...

Dur ing a photoe lec t rochemical reac t ion only a por t ion of the l igh t energy absorbed by the semiconductor (CdS or TiO2 single crys ta l ) is u t i l ized in the e lec t rode reaction. The unused por t ion of energy is expended th rough var ious mechanisms as heat. Therefore by moni tor ing t empera tu re changes wi th in the photoanode as a funct ion of e lec t rode potent ia l and l ig...

Hydrolyses in D(2)O (pD 1.7-3.1) of dimethyl (7), methyl phenyl (8), phenyl methyl (9), and diphenyl (10) phosphonoformate diesters are substantially accelerated by Ce(IV), Th(IV), Zr(IV), and Hf(IV) cations. Chemoselectivity is observed, whereby Zr(IV) and Hf(IV) principally direct P-OR hydrolysis, whereas Th(IV) and Ce(IV) mainly direct C-OR hydrolysis. Leaving group efficiency (OMe vs OPh) m...