نتایج جستجو برای: نانوذرات fe cr al
تعداد نتایج: 555818 فیلتر نتایج به سال:
The influence of Cr and Al content on the oxidation behaviour FeCr(Al) model alloys after breakaway at 600 °C underlying mechanisms were investigated in detail with thermogravimetrical analysis (TGA), thermodynamic calculations advanced electron microscopy. results showed that a Cr-content ≥18 wt% drastically reduced growth rate Fe-rich oxide scale, formed oxidation, for FeCrAl but not FeCr all...
In epitaxial Fe/Cr superlattices the coupling between the Fe layers oscillates between antiferromagnetic (AFM) and ferromagnetic as a function of the Cr layer thickness tCr. The period of the oscillation is the same for superlattices grown with (211) and (100) orientations. We measured the coupling of Fe/Cr(110) superlattices consisting of three identical Fe layers. The magnetization curves wer...
د-موضوع پایان نامه( شرح و بیان مساله): فناوری نانو با مطالعه و کاربرد موادی که حداقل از یک بعد کوچک تر از 100 نانومتر باشند سروکار دارد. این فناوری شامل دست کاری و ساخت مواد و ابزارهایی در مقیاس نانو می باشد. با توجه به آن که در این مقیاس، دیگر قوانین عادی فیزیک و شیمی صدق نمی کنند، ظرفیت بسیار زیادی برای تولید مواد جدید وجود دارد، به طوری که می توان ازساختارهای نانو در پزشکی و زیست شناسی (mo...
The aim of this study was to determine the effect of uncontrolled environmental disposal of food supplements containing magnesium (Mg), chromium (Cr), iron (Fe) and zinc (Zn) on selected aquatic organisms including freshwater algae Scenedesmus subspicatus and Raphidocelis subcapitata, water flea Daphnia magna and duckweed Lemna minor. Thirty different food supplements containing Mg, Cr, Fe and ...
The influence of Fe(III) starting material on the ability of magnetically recoverable biogenic magnetites produced by Geobacter sulfurreducens to retain metal oxyanion contaminants has been investigated. The reduction/removal of aqueous Cr(VI) was used to probe the reactivity of the biomagnetites. Nanomagnetites produced by the bacterial reduction of schwertmannite powder were more efficient at...
In this paper, we studied the relation between the micronutrient and gestational diabetes. Therefore, we measured micronutrient concentration including Ni, Al, Cr, Mg, Fe, Zn, Cu, and Se in serum of women with gestational diabetes between 24 and 28 weeks of gestational age (study group) who had inclusion criteria and comparison with micronutrient levels in normal pregnant women with same gestat...
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