نتایج جستجو برای: kbr
تعداد نتایج: 750 فیلتر نتایج به سال:
Understanding the transport property of Li ions is crucial for improving performance Li-ion batteries. To investigate ion diffusion at high temperatures, we constructed a high-temperature pulsed-field-gradient (PFG) nuclear magnetic resonance (NMR) probe capable measurements temperatures >700 K. The accuracy sample temperature was confirmed via 79Br NMR KBr. 7Li PFG-NMR Li2CO3 were performed up...
Heteropoly acid promoted nanoparticle of nickel oxide samples were prepared by sol-gel method using heteropoly acids. Prepared composite was characterized by XRD, FT-IR and ICP technique. In this work, we have reported bromination of phenol, its derivatives and some aromatic compounds. The liquid phase bromination of phenol was Performed using heteropoly acids immobilized nanoparticle of nickel...
BACKGROUND Preparation of KBr tablets, used for Fourier transform infrared (FT-IR) analysis of urinary calculus composition, is time-consuming and often hampered by pellet breakage. We developed a new FT-IR method for urinary calculus analysis. This method makes use of a Golden Gate Single Reflection Diamond Attenuated Total Reflection sample holder, a computer library, and an artificial neural...
A simple function, called attenuation parameter, is presented that can be used to extract quantitative information on the degree of localisation of normal modes at locations of arbitrary dimensionality from eigenvector components calculated in lattice dynamics simulations. Normal modes are identified as localised if their attenuation parameter values exceed a certain threshold value. As example...
In this study we have determined by radioimmunoassay and double immunoelectrophoresis the total quantities and distributions of A apoproteins in three adult patients affected with Tangier disease (hereditary alpha-lipoprotein deficiency). Compared with normal plasma, the total quantities of apoproteins A-I and A-II in Tangier plasma were determined to be less than 1% and 5-7%, respectively. In ...
ژئودزی فیزیک شاخهای از دانش ژئودزی است که به بررسی دقیق و موشکافان? میدان گرانی زمین و تغییرات آن میپردازد. در این راستا علاوهبر مطالعات خاص و دقیق روی سطح زمین، به بررسی مدار ماهوارههای در گردش پیرامون زمین میپردازد و با تحلیل مدار ماهوارهها تغییرات میدان گرانی را بهصورت دقیقتر و در مقیاسهای جهانی بهدست میآورد. ماهوار? GRACE دومین نسل از ماهوارههای مخصوص گرانیسنجی است که هدف از مأ...
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