نتایج جستجو برای: magnetic tunn
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Scanning tunn surface during Ag etching. Domains observed on the S hydrogen thermal temperatures near convert into the 7
we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.
This paper discusses computational complexity of conceptual successive convex relaxation methods proposed by Kojima and Tunn cel for approximating a convex relaxation of a compact subset F = fx 2 C 0 : p(x) 0 (8p() 2 P F)g of the n-dimensional Euclidean space R n. Here C 0 denotes a nonempty compact convex subset of R n , and P F a set of nitely or innnitely many quadratic functions. We evaluat...
a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...
asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...
چکیده ندارد.
این پایان¬نامه شامل دو قسمت به قرار ذیل می¬باشد: 1-نانو¬ذرات fe3o4 به روش هم¬رسوبی سنتز شده و در محلولی از استیک اسید شامل کیتوسان¬، پراکنده می¬شود. در ادامه از glyoxal به عنوان عامل متصل¬کننده برای سنتز دو فیلم magnetic chitosan/glyoxal و magnetic chitosan/glyoxal/pva استفاده شده¬است. از فیلم¬های سنتز شده فوق به عنوان جاذبی کارآمد¬، قابل بازیافت و زیست¬سازگار جهت حذف فلز کروم¬(vi) از محلول¬ها...
magnetic resonance imaging (mri) is a notable medical imaging technique that makes of phenomenon of nuclear magnetic resonance. because of the resolution and the technology being harmless, mri has considered as the most desirable imaging technique in clinical applications. the visual quality of mri plays an important role in accuracy of medical delineations that can be seriously degraded by exi...
CW-cavity ring down spectroscopy was used to record in a free jet expansion the spectrum of the absorption band in ((12)C(2)H(2))(2) with origin at 6547.6 cm(-1). It is a perpendicular band and corresponds to 2CH excitation in the hat unit of the T-shaped dimer. Calibration (better than ±1 × 10(-3) cm(-1) accuracy) and ring-down time (130 μs) were improved compared to a previous contribution (D...
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