Inorganic-solid lithium electrolytes are typically thought of as single-ion conductors, but the presence secondary carriers can strongly affect their performance. Conventional descriptions multi-carrier transport neglect both interactions between mobile species and stress diffusion — phenomena which markedly impact electrical response. We apply irreversible thermodynamics to develop a chemomech...

Cs2AgBiBr6, has recently gained wide attention as a possible alternative to lead-halide perovskites, considering the nontoxicity and improved stability. However, this double perovskite suffers from defects, especially deep electron traps, severely hampering photovoltaic performance. This work reports simple method control crystallization by adding volatile salts into precursor solution. X-ray d...

Hybrid perovskites with mixed organic cations such as methylammonium and formamidinium have attracted interest due to their improved stability capability tune properties varying the composition. In this work we report on local variation of structural electronic in A-site cation MA/FA lead iodide FAXMA1-XPBI3 evaluated from static first-principles calculations certain structures where orientatio...

Hybrid organic–inorganic halide perovskites (HOIPs) have recently represented a material breakthrough for optoelectronic applications. Obviously, studying the interactions between central organic cation and Pb-X inorganic octahedral could provide better understanding of HOIPs. In this work, we used first-principles theoretical study to investigate effect different orientations formamidinium (FA...

Background: The present study was carried out with the aim of extracting trace amounts of zinc in urine samples with ultrasound-assisted emulsification solidified floating organic drop micro-extraction (USAE-SFODME) method by flame atomic absorption spectrometry (FAAS). The efficiency was investigated using the solvent extraction volume, extraction pH, time sonication and temperature extraction...

The inorganic–organic hybrid micro/nanoparticles have emerged as an exciting new research area owing to their highly tailorable properties, as well as their potential applications in drug delivery, catalysis, biosensing, biomedical imaging, gas storage, spin-crossover, and optics. Unlike inorganic particles, the inorganic–organic hybrid micro/nanostructures can be easily tuned by switching the ...

Hybrid organic-inorganic perovskites represent a special class of metal-organic framework where a molecular cation is encased in an anionic cage. The molecule-cage interaction influences phase stability, phase transformations, and the molecular dynamics. We examine the hydrogen bonding in four AmBX3 formate perovskites: [Am]Zn(HCOO)3, with Am+ = hydrazinium (NH2NH3+), guanidinium (C(NH2)3+), di...

Clearing tropical forests of the Amazon Basin for pasture alters rates of soil nitrogen cycling. Previous studies have shown that rates of soil net N mineralization and net nitri®cation are lower in established pastures than in forests. We compared soil inorganic N concentrations, rates of net and gross mineralization and net and gross nitri®cation in a chronosequence and an experimental slash-...

The nuclease domain of ColE7 (N-ColE7) contains an H-N-H motif that folds in a beta beta alpha-metal topology. Here we report the crystal structures of a Zn2+-bound N-ColE7 (H545E mutant) in complex with a 12-bp duplex DNA and a Ni2+-bound N-ColE7 in complex with the inhibitor Im7 at a resolution of 2.5 A and 2.0 A, respectively. Metal-dependent cleavage assays showed that N-ColE7 cleaves doubl...

OBJECTIVE The aim of this study was to evaluate the effect of the addition of metallic ions to carbonated drinks on their erosive potential. MATERIAL AND METHODS Powdered enamel was added to carbonated beverages (Coca-ColaTM or Sprite ZeroTM and shaken for 30 s. The samples were then immediately centrifuged and the supernatant removed. This procedure was repeated 5 times with the beverages co...