The present study examines the effect of silicon dioxide (SiO2) nano-additives on performance and emission characteristics a diesel engine fuelled with soybean biodiesel. Soybean biofuel was prepared using transesterification process. morphology studied scanning electron microscopy (SEM), X-ray diffraction (XRD) energy-dispersive spectroscopy (EDS). Ultrasonication process used for homogeneous ...

Mn and Fe BPMEN complexes showed excellent reactivity in catalytic oxidation with an excess of co-reagent (CH3COOH). In the straight line a cleaner system, volatile acetic acid was replaced by SiO2 (nano)particles two different sizes to which pending carboxylic functions were added (SiO2@COOH). The SiO2@COOH beads obtained functionalization nitrile (SiO2@CN) followed CN hydrolysis. All silica c...

The present work determined the influence of superhydrophobic nano-SiO2 on hydraulic conductivity and pore size distribution expansive soil, analysed mechanism modification between soil from a microscopic view. Superhydrophobic was added to as modifier. Our samples were two types, i.e., unmodified (without nano-SiO2) modified (with 0.2%, 0.4%, 0.6%, 0.8%, 1.0% by weight parent soil). decreased ...

This research studies the influence of using SiO2 nano-particles 50nm in a Vapor Compression Refrigeration System (VCRS), along with Poly-alkylene Glycol (PAG) oil and R-134a mixed to create nano-refrigerant. In this work, were performed three different concentrations (0.1%, 0.3%, 0.5%) 200ml PAG oil. AVCR system was built at mechanical engineering department laboratory Al-Qadisiyah University ...

in this work, a novel hg2+ sensitive fluorescent chemosensor is constructed. the proposednano-chemosensor was prepared through the preparation of 3-(benzo[d]thiazol-2-yl)-7-hydroxy-2h-chromen-2-one functionalized silica nanoparticles which has high magnetization properties (btc-fe3o4@sio2). theûnal product was characterized by fourier transform infrared spectroscopy (ft-ir), thermal gravimetric...

Nano-materials have been widely accepted for many purposes as improvement materials several engineering projects. In this research, an attempt was made to study the effect of using two types Nano-materials, namely: Nano-SiO2 and Nano-clay, investigate mechanical properties soil improved with aid permeation grouting technique. Three different ratios Nano-materials/ water (1/30, 1/50, 1/100) were...

Complex engineered nanomaterials (CENs) are a rapidly developing class of structurally and compositionally complex materials that are expected to dominate the next generation of functional nanomaterials. The development of methods enabling rapid assessment of the toxicity risk associated with this type of nanomaterial is therefore critically important. We evaluated the toxicity of three differe...

reaction between aromatic aldehydes and 3–methyl-1-phenyl-2-pyrazoline-5-one catalyzed by nano-sio2/hclo4 in water under reflux provided a simple and efficient route for the synthesis of 4-((5-hydroxy-3-methyl-1-phenyl-1h-pyrazol-4-yl)(aryl)methyl)-3-methyl-1-phenyl-1h-pyrazol-5-ol derivatives in high yields.

We theoretically investigate the tuning of Photonic band gaps in one dimensional photonic crystals based on Nano composite of silver nanoparticle embedded in SiO2 by applying electric field. In addition, the tuning can be done by considering the filling fraction and the radius of the nanoparticle. The evolution of these results to provide new possibilities of designing the desired photonic crys...