نتایج جستجو برای: the surface area decreases x

تعداد نتایج: 16289058  

Journal: :Acta Crystallographica Section A Foundations and Advances 2014

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Journal: :journal of physical & theoretical chemistry 2011
mohammad khodadadi moghaddam fatemeh fallah iri sola

tio2 nanoparticles were synthesized by modified sol—gel method using pure room temperature ionic liquid(rtil) 2-hydroxyethylammonium formate as a reaction medium. the structure and morphology of tio2nanoparticles were characterized with x-ray powder diffraction (xrd), bet surface analysis and scanningelectron microscopy (sem). tio2 nanoparticles were synthesized in open and closed vessels. the ...

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2015
L. Zielke C. Barchasz S. Waluś F. Alloin J.-C. Leprêtre A. Spettl V. Schmidt A. Hilger I. Manke J. Banhart R. Zengerle S. Thiele

Lithium/sulphur batteries are promising candidates for future energy storage systems, mainly due to their high potential capacity. However low sulphur utilization and capacity fading hinder practical realizations. In order to improve understanding of the system, we investigate Li/S electrode morphology changes for different ageing steps, using X-ray phase contrast tomography. Thereby we find a ...

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پایان نامه :دانشگاه بین المللی امام خمینی (ره) - قزوین - دانشکده علوم پایه 1391
سمیه حیدری, مجید سلیمانی, میر محمد علوی نیکجه,

به منظور بهینه سازی سایز نانو ذرات مغناطیسی 7 سنتز طراحی گشت. یک روش به عنوان مرجع انتخاب شد. تمام نمونه های نانوذرات در این 7 سنتز با روش هم رسوبی تهیه شدند. در آزمایش مرجع از مخلوط نمک های فریک و فروس با نسبت های مولی مناسب استفاده شد، و سود به عنون رسوب دهنده در این آزمایش انتخاب گردید، سپس برای بهینه نمودن سایز نانو ذرات مغناطیسی، پارامترهای مهم شامل نوع باز، استفاده از سورفکتانت در محیط سن...

Journal: :Journal of neurophysiology 2006
Elena D Nosyreva Kimberly M Huber

Fragile X syndrome (FXS), a form of human mental retardation, is caused by loss of function mutations in the fragile X mental retardation gene (FMR1). The protein product of FMR1, fragile X mental retardation protein (FMRP) is an RNA-binding protein and may function as a translational suppressor. Metabotropic glutamate receptor-dependent long-term depression (mGluR-LTD) in hippocampal area CA1 ...

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Journal: :journal of nanostructures 2013
a. tadjarodi m. haghverdi v. mohammadi m. rajabi

the silica aerogel was prepared by the acid–base sol–gel polymerization of tetraethylorthosilicate precursor followed by ambient pressure drying. the prepared silica aerogels were characterized by fourier transform infrared )ft-ir(, thermo-gravimetric and differential thermal analysis )tg/dta(, x-ray diffractometer )xrd(, energy dispersive x-ray microanalysis )edx(, brunauer–emmitt–teller (bet)...

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Journal: :international journal of advanced design and manufacturing technology 0
ehsan mohamadi mehdi taheri amir zomorodian

in this research formability behavior and texture of st14 low carbon steels produced by foolad mobarakeh plant for deep drawing application had been studied. plate textures were characterized by x-ray diffraction technique. to evaluate formability behavior one dimensional tensile test was carried out and related parameters were recognized. moreover eriksson experiment and spherical pattern prin...

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پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389
مرضیه صادقی, مجتبی شمسی پور,

fluorescence chemical sensors for the highly sensitive and selective determination of pb2+ , hg2+, co2+ and fe3+ ions in aqueous solutions are described. the ion sensing system was prepared by incorporating lipophilic ligand (l) as a neutral ion-selective fluoroionophore in the plasticized pvc membrane containing sodium tetraphenylborate or potasium tetrakis (p-chlorophenyl) borate as a liphoph...

15 صفحه اول
ژورنال: علم و مهندسی سرامیک 2021
, ,

Given the growing importance of photocatalysts in the industrial wastewater treatment, in this study, TiO2-CuO (TC) composite nanoparticles were synthesized by sol-gel method. Tetrabutyl orthotitanate (TBT), copper nitrate-3hydrate and ethanol were used as titanium dioxide precursor, copper oxide precursor and solvent, respectively. The structural, optical, photocatalytic activity and BET-BJH...

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Journal: Iranian Journal of Chemistry and Chemical Engineering 2014
Ali Morad Rashidi, Iida Bakhtiari Mahshad Alaei,

In comparison to the previous researches, ZrO2 nanoparticles with higher surface area (85 m2/g) have been synthesized in this research. The as-prepared ZrO2 nanoparticles by co-precipitation method were characterized with X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The surface area of the s...

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نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید

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  • " +i+ "
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