نتایج جستجو برای: the hollow clay

تعداد نتایج: 16064361  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده شیمی 1389

in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Journal: :E3S web of conferences 2022

Interlocking Hollow Block System (IHBS) is a reasonable solution for conventional block masonry due to its structural ability and building capability. In addition, economic ecological of brickwork can be achieved by incorporating fly ash into IHBS. The main aim the research produce interlocking compressed hollow that satisfy standard requirement as in Eurocode 6. study essentially divided 2 pha...

Porous hollow glass microspheres have many uses, including encapsulation of active materials. In this paper a fast and facile method for fabricating porous hollow glass-microspheres was demonstrated by etching them using dilute hydrofluoric acid. Then, a highly reactive amine was infiltrated into the etched glass microspheres. Scanning electron microscopy was conducted for the hollow glass micr...

Journal: :journal of physical & theoretical chemistry 2010
f. khazali m. gholami k. zare

plane-wave pseudopotential density functional theory (oft) periodic slab calculations were performed usingthe giteralized gradient approximation (gha) to investigate the adsorption of nitric oxide(no) on the (i ii)surface of cu. copper rface was stimulated using th p 'odic slab method consisting of five atomic layers.four different adsorption saes (atop. bridge, rcp hollow, and fcc hollow) were...

Journal: :Ceramics 2023

The thermal insulation properties of building walls are critical to the overall energy efficiency and comfort a building. One important factor that can affect these is type bricks used in construction. Bricks vary their geometry coefficient, which impact ability transfer heat through wall. brick its by altering amount air trapped within it surface area available for transfer. Hollow or those wi...

Journal: : 2021

Resilient modulus is commonly used in prediction of long-term deformation performances pavement foundation layers under repeated traffic loads. For this reason, the determination material property accurately has a great importance designs. In study, resilient medium-dense sand-clay mixtures was investigated through cyclic triaxial and heart-shaped stress paths. purpose, specimens having clay co...

Journal: :iranian journal of public health 0
a ameri m gholami n nasseri t matsuura

membrane technology is used to separate water or solvents from salts or pollutants. this technique could be used for water treatment. for using of polyether sulfone (pes) hollow fiber membranes in water treatment processes, the pes hollow fiber membranes were prepared by dry-wet spinning method and heated in an oven at: 120°c, 150°c and 180°c. the effect of heating on performance of membranes w...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید