studies were carried out on the preparation and properties of the composites made from cellulose acetate butyrate and cellulose acetate propionate with various amounts of barium strontium titanate nano-particle. the nano-particles of barium strontium titanate (bst) with formulation of ba0.77sr0.23tio3 were made by sol-gel method and their purity and particle size were analyzed by x-ray diffract...

Sulfur Nanoparticles was prepared by different method with different size and shapes, when the sulfur present as nanoparticles they have many practical application in our life. This paper discuses different sulfur nanoparticles synthesis, characterizations and application. Different methods were used for nanosize particle synthesis; among those, chemical precipitation, electrochemical method, m...

Short term forecasts of meteorological parameters (including precipitation) over the oceans is often difficult because of the lack of observations used to initialize the forecast models in these regions. While sea surface temperature (SST) fields derived from satellite and in situ data currently provided to the models provide some large scale information on surface forcing, the small scale grad...

Abstract Most of Earth’s rain falls in the tropics, often highly seasonal monsoon rains, which are thought to be coupled inter-hemispheric migrations Inter-Tropical Convergence Zone response cycle insolation. Yet characterization tropical rainfall behaviour geologic past is poor. Here we combine new and existing hydroclimate records from six large-scale regions with fully independent model-base...

Relationships between the interannual variability of the U.S. summer precipitation regime and the intensification, weakening, or changes in position of the climatological-mean circulation features that organize this regime are examined. The focus is on the atmospheric conditions over the conterminous United States relative to wet and dry monsoons over the southwestern United States. The onset o...

This work reports on the structural modification of cellulosic materials with magnetic iron oxide nanoparticles through co-precipitation method. Cellulose is one most abundant natural polymers chemical variability brought about by presence several hydroxyl groups, allowing its surface modifications insertion groups to impact characteristics. Thus, objective this study was synthesize (MNPs) co-p...

the influence of maleic anhydride-polypropylene (mapp) (0, 2, 3 and 5%) as a compatibilizer on the wettability of polypropylene/wood flour/glass fiber hybrid composites was studied by using the contact angle determination technique. sample slats with a cross section of 10×70 mm were made by a twin screw extruder. specimens were conditioned at room temperature and the angles between the water dr...

In this research, the influence of adding micro- and nano- sized calcium carbonate powders to nylon-66 was investigated. Mechanical properties of micro and nano- composites, including tensile strength, elongation, and Young’s modulus, before and after ageing, were determined and analyzed. For this purpose, micro- and nano-sized CaCO3 particles were used as fillers to prepare micro-composites (c...

excellent mechanical properties of carbon nanotubes (cnts) make them outstanding candidate reinforcements to enhance mechanical properties of conventional composites. the glass/polyester composites are widely used in many industries and applications. improving the mechanical properties of such composites with addition of cnts can increase their applications. in this research, multi-walled carbo...