In the present study, we have studied advantages of using black rice husk ash nanoparticles as a foam stabilizer. It was shown that can potentially improve stability; therefore, allows one to reduce surfactant or polymer concentration needed control gas mobility in reservoir. previously published studies, authors reported results for this particular application. The study aims foam-forming abil...

Micro deep drawing (MDD) is a fundamental process in microforming which has wide applications micro electromechanical system (MEMS) and biological engineering. Titanium possesses excellent mechanical properties biocompatibility, makes it preferred material micromanufacturing. In this study, eco-friendly low-cost water-based TiO2 nanolubricants were developed applied the MDD with 40 μm-thick pur...

We present here a systematic study of the dispersibility of multiwall carbon nanotubes (MWCNTs) in natural rubber latex (NR-latex) assisted by a series of single-, double-, and triple-sulphosuccinate anionic surfactants containing benzene ring moieties. Optical polarising microscopy, field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and Raman spectrosc...

The rheology and shear-induced structures of a series of self-assembled surfactant worm-like micelles (WLMs) with varying levels of branching are measured using rheoand flow-small angle neutron scattering (SANS). The degree of branching in the mixed cationic/anionic surfactant (CTAT/SDBS) WLMs is controlled via the addition of the hydrotropic salt sodium tosylate and verified by cryo-TEM. The l...

This work was initiated to study the concentration effects on phenanthrene and pyrene extraction during process of aging in phaeozem and burozem with or without freeze-thawing cycles. 1, 10, and 100 μg g(-1) phenanthrene and pyrene contaminated soils were extracted by 10,000 mg L(-1) surfactant SDBS at various times. The extraction amount decreased with increasing contact time. Aging process co...

Combinatorial Optimization is an important area of computer science that has many theoretical and practical applications. In this thesis, we present important contributions to several different areas of combinatorial optimization, including nogood learning, symmetry breaking, dominance, relaxations and parallelization. We develop a new nogood learning technique based on constraint projection th...

EXPERIMENTAL SECTION Materials and reagents Tetrabutyl titanate (TBOT), sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate (SDBS) and phosphoric acid (H3PO4) were from Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). Human IgG (HIgG) (Ag), rabbit anti-human IgG (Ab1), and goat anti-human IgG (Ab2) were purchased from Beijing Biosynthesis Biotechnology Co., Ltd. (Beijing, China)....

A simple and effective means for obtaining hollow silica particles of controlled diameter from about 60 to 120 nm is presented. The synthesis utilizes equilibrium vesicles as templates for the directed growth of silica. Two different surfactant systems are used to form the vesicular templates: (a) mixtures of cetyltrimethylammonium bromide (CTAB) and sodium perfluorooctanoate (FC7) and (b) mixt...