The Cover Feature shows an artist's impression of the understanding fundamentals concentrated borohydride/metaborate solutions and their application in hydrogen storage. image was designed by Gadi Rothenberg illustrated Itamar Daube, www.itamardaube.com. copyright owner this hereby gives right to all persons use for any purpose, provided that illustrator's name website are correctly cited. More...

Chemical oil recovery from offshore reservoirs which are usually characterised by harsh conditions such as high salinities have remained a source of concern. This study assesses chemical compatibilities alkalis –surfactant systems under salinity and divalent ions (Ca2+ Mg2+). It analysed the synergy between alkali-surfactant slugs crude oil, leading to design an optimal low-cost alkaline- surfa...

In this work facile sol-gel (pechni) method has been successfully established to synthesize Zn4B6O13 nanocrystals which have cubic crystals with lattice parameter: a =7.48 A. The structure and morphology of the obtained material were studied by X-ray diffraction (XRD), Infrared spectra (IR), scanning electron microscopy (SEM) and photoluminescence analysis. The experimental results show a band ...

In this work facile sol-gel (pechni) method has been successfully established to synthesize Zn4B6O13 nanocrystals which have cubic crystals with lattice parameter: a =7.48 A. The structure and morphology of the obtained material were studied by X-ray diffraction (XRD), Infrared spectra (IR), scanning electron microscopy (SEM) and photoluminescence analysis. The experimental results show a band ...

Chemical composition of ceramic materials is one the key properties and its determination complex time-consuming. The melting silicon dioxide most important difficult step for determination. This paper about optimizing pretreatment method from test standard, QB/T 2578-2002 <Standard chemical by spectrophotometry>. It not convenient to use mixed flux (lithium hydroxide boric acid) material...