A metastable phase of NbN with superconducting T c =16.4 K was reported recently by Treece and collaborators. The reported structure of the thin film sample deviates from the rocksalt (B1) NbN structure with 25% ordered vacancies on each sublattice (space group Pm3m) and a lattice constant of 4.442Å. Using full potential electronic structure methods, we contrast the electronic structure with th...

The detection of acid in different solution environments plays a significant role chemical, environmental and biological fields. However, reducing the constraints detecting environment, such as aqueous, organic solvents mixed phases aqueous phases, remains challenge. Herein, by combining N, N′, N′-tetrakis(4-aminophenyl)-1,4-phenylenediamine (TPBD) terephthalaldehyde (TA) via Shiff-base condens...

Single phases of the α, β, and γ polymorphs Fe2WO6 iron tungsten oxide were obtained through an aqueous solution route based on combustion heat treatment a spray-dried precursor p...

background it has been elucidated that berberis vulgaris (barberry) can alleviate morphine withdrawal syndrome. also it has been reported that aqueous extract of barberry possibly have inhibitory effect on nmda receptors. objectives in this study, we decided to evaluate the effects of aqueous extract of b. vulgaris fruit on morphine tendency in mice using conditioned place preference (cpp) meth...

Numerous factors control the chemistry of metal ions in natural aqueous systems. These include the presence of a host of complexing agents, speciation among a variety of competing ligands, buffering due to precipitated solid phases, and the relative influences of kinetic versus thermodynamic phenomena. Natural aqueous systems are inevitably complicated, but simple, inorganic models can be const...

Three phase partitioning (protein precipitate obtained as an interfacial layer between lower aqueous and upper t-butanol phases, formed by the addition of ammonium sulphate and t-butanol to the aqueous solution of protein) followed by lyophilization in the presence of two-component excipient resulted in 400-480x increases in transesterification activity of lyophilized powders of subtilisin Carl...

The formation of secondary organic aerosol (SOA) results from the absorption of gasphase organic oxidation products by airborne aerosol. Historically, modeling the formation of SOA has relied on relatively crude estimates of the capability of given parent hydrocarbons to form SOA. In more recent work, surrogate organic oxidation products have been separated into two groups, hydrophobic and hydr...