Recently, corrosion perforation has been frequently seen in surface pipelines the oil and gas industry, resulting operational environmental challenges. Due to complex characteristics mechanisms of such corrosion, a new pragmatic method designed identify evaluate phenomenon via hanging ring installed pipeline. In addition respectively analyzing ions water samples with chemical titration, ion chr...

Biological assembly processes offer inspiration for ordering building blocks across multiple length scales into advanced functional materials. Such bioinspired strategies are attractive assembling supported catalysts, where shaping and structuring essential their performance but still remain tremendously difficult to achieve. Here, we present a simple route toward catalysts with tunable activit...

The present study focuses on exploring the effects of reactivity and degree dispersion BaCO 3 additions in manufacture sulfate-resistant OPC cements. A new electrochemical deposition method is attempted to effectively disperse particles (studying two different materials with particle size: D 50 = 11.45 2.37 μm) cement enhance their favour sulfate immobilisation form BaSO 4 . barium carbonate ad...

Lean NOx traps are an important concept for reducing NOx in lean exhausts from diesel engines and lean burn gasoline engines. A global kinetic model has been developed in this work that can describe the NOx emissions after the catalyst. The model is based on flow reactor experiments using a model Pt/Rh/BaO/Al2O3 catalyst. The objective with the model was to use global kinetics to facilitate rap...

OBJECTIVES/HYPOTHESIS This study tested the hypotheses that swallowing apnea duration (SAD) will increase given barium versus water, chemesthetic stimuli (i.e., water < ethanol, acid, and carbonation) mixed with barium, age (older > younger), and genetic taste differences (supertasters > nontasters). STUDY DESIGN Prospective group design. SETTING University Medical Center. METHODS Eighty ...

Barium ions enter chromaffin cells via voltage-sensitive calcium channels, although the intracellular site of barium action is distinct from that of calcium. The entry of barium primarily through voltage-sensitive channels was indicated by experiments showing inhibition of 133Ba2+ uptake by blockers of voltage-dependent calcium channels. In addition, 133Ba2+ uptake was stimulated by 50 mM KCl b...

Barium sulphate has been used as a gastrointestinal (GI) contrast agent for over 100 years. Since the first report of single contrast barium radiography in 1910, barium techniques have evolved in parallel with technical developments such as fluoroscopic image intensification. Double contrast techniques were first described in the 1920s but did not become mainstream until the 1960s and 1970s whe...

nowadays various methods are presented for synthesis of barium strontium titanate (bst) nanopowders with different morphology and properties. each of these (bst)s has got individual characterization that makes it suitable for a special application. every method has a special quality, causes it to have preference over the other methods. low processing temperature is a desired point which most of...

abstract appendiceal intussusception is a very rare cause of abdominal colic in childhood. this paper reports a reducible appendiceal intussusception in the barium enema in a girl and reviews articles in pubmed.