Neodymium doped β-Ga2O3 films were elaborated on (1 0 0) silicon and (0 0 0 1) sapphire substrates by the radiofrequency magnetron sputtering method. X-ray diffraction, transmission electron microscopy, spectroscopic ellipsometry and photoluminescence measurements were performed to characterize...

The corrosion characteristics of tin-lead and three lead free solders (Sn-0.7Cu, Sn-3.0Ag and Sn-3.0Ag-0.5Cu) exposed to fire smoke generated from polyvinyl chloride (PVC) were comparatively investigated through weight loss method and surface characterization techniques. Results show that the co...

The feasibility and kinetics of lead recovery from the slag of traditional lead melting furnace using chloride leaching were investigated. The effects of operating parameters such as leaching time, NaCl concentration, FeCl3 concentration, liquid/solid ratio, stirring rate, temperature, and parti...

It is difficult to selectively obtain the qualified lead and zinc from the galena-sphalerite ore by using the existing pyrometallurgical process. A novel method by using electro-oxidation in Fe ion solution has been identified which facilitates the selective separation of lead from the galena-sp...

Lead (Pb) is an environmental pollutant and has toxic effect on birds. Selenium (Se) has alleviative effect on Pb poisoning. This study investigated mitigative effect of Se on autophagy in Pb-treated chicken testes. Seven-day-old male chickens were randomly divided into four groups with 45 birds...

In this study, the removal effect of arsenic(V) was compared with different lead-containing substances, and the process of arsenic(V) removal with lead oxide was optimized. The results showed that As(V) removal efficiencies with lead powder, lead oxide, lead hydroxide and lead nitrate were 26.5%...

A study of the kinetics of the anodic oxidation of chloride ions on the surface of lead-silver anodes used for the electrowinning of zinc has shown some interesting and practically important results. Oxidation of chloride does not occur on a PbSO4 surface but occurs readily on a PbO2 surface. Ox...

Because of steric effects the Cr(CO)3 group in tricarbonyl(1-trimethylsily]-2,3-dimethoxybenzene)chromium does not take up an anti-eclipsed conformation with respect to the trimethylsilyl group, but instead adopts the opposed conformation nearly eclipsing that group.

Rate constants have been measured for the α-metallation of some arylmethanes, of 5H-dibenzo[a,d]cycloheptene and its dihydro derivative, free and complexed with tricarbonylchromium, by potassium hydride in tetrahydrofuran in the presence of 18-crown-6 ether. The stable solutions of the complexe...

The Linear Muffin Tin Orbital (LMTO) method has been used to calculate the band structure, electron density, and the heat of formation of scandium monophosphide. The properties of the phosphide have been obtained by minimizing the total valence energy as a function of the atomic volumes of the s...

Full-potential linear muffin-tin (FP-LMTO) has been implanted within density functional theory (DFT) and within local density approximation. The structural and electronic properties of GaP, AlP and ScP binary compounds and their ternary alloys ScxAl1−xP and ScxGa1−xP over a whole range of compos...

An experiment was carried out to investigate the relative bioavailability of tribasic zinc (Zn) sulfate relative to Zn sulfate for broilers fed a conventional corn-soybean meal diet. A total of 504 1-d-old Arbor Acres commercial male chicks were randomly assigned by body weight of birds to one o...

Highly transparent and durable self-cleaning materials became demanding for diverse applications. To attain such goals, glass system with composition (69 − x)TeO2-20ZnO-10Na2O-1Er2O3-(x)TiO2, where x = 0.0, 0.1, 0.2, 0.3 and 0.4 mol% were synthesized using the conventional melt quenching method ...

The novel heteroleptic complex (gu)2[Nb(O2)3(quin-2-c)] · H2O (1) has been prepared by substituting a peroxo group by quinoline-2-carboxylate ion in the homoleptic complex (gu)3[Nb(O2)4] (2) in the presence of an excess of hydrogen peroxide in aqueous medium (gu+ = CN3H6+; quin-2-c = quinoline-...

Mixed bismuth niobium oxides, containing transition metals were synthesized by using solid-state reactions in the systems Bi2O3-Nb2O5-MO(M2O3), M-Cr, Mn, Fe, Co, Cu. Powder X-ray diffraction studies of these compounds show, that crystal phases with structures as the orthorhombic BiNbO4, the laye...

Nanosized PZN–BT powders were synthesized directly from their constituent component oxide mixture via a high-energy ball milling process. XRD patterns showed that perovskite phase could be formed after milling for 5 h, while single phase perovskite was achieved when the milling was prolonged fo...

Lead-based relaxors are technologically important materials for multilayer ceramic capacitors and electro-optic devices. Typical of relaxor materials is lead magnesium niobate (PMN), which shows excellent dielectric properties. The commercial production of these materials, however, has suffered ...

Nanosized ZnNb2O6 powders obtained by high energy ball milling (HEBM) and subsequent heat treatment were compacted and sintered into near full density ceramics using pressureless sintering. The prepared ceramic samples were characterized by field emission scanning electron microscopy, X-ray diff...

ZnO and Nb2O5 mixtures partially reacted to form ZnNb2O6 during a high-energy ball milling process after milling for 5–15 h. The milled powders were extremely active and almost single phase ZnNb2O6 could be achieved at a temperature as low as 500 °C. The effect of post-annealing on the grain g...

Polyvinyl alcohol (PVA) films doped with varying amounts, viz., 0.5, 1.0 and 2.0 wt.%, of sodium zirconate (Na2ZrO3) were prepared using the solution casting technique in order to investigate the effect of Na2ZrO3 nanoparticle incorporation on the structural, morphological and electrical propert...