نتایج جستجو برای: fe cr c و
تعداد نتایج: 1894853 فیلتر نتایج به سال:
First-principles investigation of the stability of 3d monolayerÕFe„001... against bilayer formation
Based on the full-potential linearized augmented plane-wave method combined with the generalized gradient approximation, we determine the ground-state spin configurations and the total energies of 3d transitionmetal monolayer and bilayer films on Fe~001! within the c(232) unit cell. We find by energy analysis that V, Cr, and Mn layers prefer the layered antiferromagnetic coupling, and Fe, Co, a...
Surface and interface properties of Fe-Cr, Fe-Al, and Fe-Cr-Al are studied using Exact Muffin-Tin Orbitals and Monte Carlo methods and with x-ray photoelectron and Auger electron techniques. Surface composition is investigated as a function of oxidation (heating) time. Hard x ray photoelectron spectroscopy (HAXPES) is used to scan non destructively the compositions below the surface. It is foun...
همدقم : نیئتورپ S100B ورون طابترا لرتنک رد و دوش یم دازآ اه تیسورتسآ زا هک تسا ینیئتورپ ، لگ ی یلا دراد شـقن یسپانیس يریذپ لکش و هظفاح رد لاامتحا و . هـعلاطم ادروخرب یصاخ تیمها زا نورون و تیسورتسآ لولس ود يدرکلمع طابترا تسا ر . ياـه شوـم رد يریگداـی يور رـب پـماکوپیه نورد هـب نیئتورـپ نیا قیرزت رثا رضاح هعلاطم رد تفرگ رارق یسررب دروم ییارحص . شور اه : زا قیقحت نیا رد 40 دش هدافتسا رن ییا...
metals bioaccumulation in five organs of cirrhinus mrigala , labeo rohita and catla catla captured from three industrial and sewage polluted downstream sites (shahdera = b, sunder = c and balloki = d) were compared with a non-industrial upstream site (siphon = a) during high (post monsoon) and low (winter) flow seasons of river ravi. mean concentrations of metals were significantly higher in ...
Kinetic labilization of the Fe(III)–O coordination bond in a mesoporous metal–organic framework, PCN-333-Fe(III), is realized by the reduction of Fe(III) by Cr(II). The Fe(II)–Cr(II) metathesis is thus completely achieved followed by this reductive labilization process that generates PCN-333-Cr(III). The kinetic inertness of Cr(III) provides PCN-333-Cr(III) with enhanced chemical stability as w...
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