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تعداد نتایج: 2052721  

ژورنال: :پژوهش فیزیک ایران 0
محمدرضا علی نژاد m. r. alinejad faculty of sciences, ferdowsi university of mashad, mashad-iranدانشکده علوم، دانشگاه فردوسی، مشهد ناصر تجبر n. tajabor faculty of sciences, ferdowsi university of mashad, mashad-iranدانشکده علوم، دانشگاه فردوسی، مشهد

در این تحقیق مغناطوتنگش و انبساط گرمایی نانوکامپوزیتهای nd4fe77.5b18.5 به هم بسته با پلیمر به روش پیمانه کرنشی مورد مطالعه قرار گرفته است. اثر بازپخت نمونه بر کمیتهای اندازه گیری شده نیز بررسی شده است. طرحهای پراش پرتو x به همراه تصاویر sem از نمونه اصلی و بازپخت شده نشان می دهند که بازپخت موجب رشد دانه فازهای مغناطیسی نرم α-fe و fe3b در زمینه آمورف و سختی مکانیکی نمونه می شود. رفتار عمومی منحن...

Journal: :Journal of the Ceramic Society of Japan 2022

Transition metal sulfides have been reported to be active materials with high capacities by using anionic redox reactions. Modifying the structure favor extraction/insertion of sodium is beneficial in achieving theoretical capacity these sulfides. In this study, we synthesized three new phases Na3NbS4 via a mechanochemical (MC) process. Under moderate MC conditions, amorphous was obtained. hars...

Journal: :ACS applied energy materials 2021

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to Facile Synthesis of MnFe2O4 Hollow Sphere-Reduced Graphene Oxide Nanocomposites as Electrode Materials for All-Solid-State Flexible High-Performance Asymmetric SupercapacitorsPriyanka MakkarPriyanka MakkarMore by Priyanka Makkar and Narendra Nath Ghosh*Narendra GhoshMore Ghoshhttps:/...

Ali Akbar Khandar Z. Rezvani

5-((4-alkoxyphenyl)azo)salicyladehyde, 5-((4-alkoxyphenyl)azo)-N-(npentyl, ndodecyl)-salicyladimine and bis [5-((4-alkoxyphenyl)azo)-N-(npentyl, ndodecyl)-salicyladiminato]copper(II) [alkoxy=OnCnH2n+1; n=3-7] homologues were synthesized and characterized by elemental analyses, mass and IR spectra. All complex homol...

Journal: :Electrochemistry 2023

We have been developing sintered multilayer oxide-based all-solid-state batteries. Anode active material rutile-type TiO2 was not reacted with amorphous Na superionic conductor (NASICON)-type solid electrolyte Li1.5Al0.5Ge1.5(PO4)3 (LAGP) even after at 600 °C in a nitrogen atmosphere from the XRD patterns. The charge/discharge behavior of electrochemical measuring cell (when using non-aqueous e...

2008
EZRA SOLOMON

The financial system of the United States contains two large subsystems. The function of the first, generally referred to as monetary policy, is to control the total volume of credit for the purpose of aggregate economic stabilization. The second sub-system, which has no name, consists of a maze of regulations, institutions and tax practices designed to influence the allocation of credit, and h...

2010
Sheila Cohen

The term 'Workers' Councils' can perhaps stand as a catchall title for an unpremeditated, quasi-spontaneous, 'groundup' organisational form reproduced over many periods and across many countries by groups of workers previously unaware of such a structure or of its historical precedents. Its highest form the Soviet, its 'lowest' the simple workplace representatives' committee, this formation rec...

Journal: :Advanced Energy Materials 2022

Among various types of perovskite-based tandem solar cells (TSCs), all-perovskite TSCs are particular attractiveness for building- and vehicle-integrated photovoltaics, or space energy areas as they can be fabricated on flexible lightweight substrates with a very high power-to-weight ratio. However, the efficiency tandems is lagging far behind their rigid counterparts primarily due to challenge...

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