Here, we have demonstrated an efficient and regioselective protocol for the synthesis of novel 2-alkoxy-3-arylimidazo[1,2-a]pyridines via microwave (MW) assisted one-pot reactions of 2-aminopyridine, β-nitrostyrenes and alcohols using nano-NiFe 2 O 4 as a reusable catalyst under aerobic conditions.This is the first method to produce alkoxy functionalized …
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Батренчин, УМХГ-ын УХХМА-ны дарга Э. Түвшинчулуун, ЭХУУГҮЭХ-ын. дарга Ч. Балжинням нар хянав. Batchimeg Battulga -нд Nom-TAD nom хэвлүүлэв. Nom-TAD nomийн онлайн хувилбарыг уншина уу. 201-243-р …
Here, an inverse spinel NiFe 2 O 4 (NFO) was employed as a prototype and FeNi/NFO composites were successfully constructed via exsolution. The preferential breaking of octahedral metal–oxygen bonds in the spinel oxide was directly observed using Möss and X-ray absorption spectroscopy. This was further verified from the …
This work described the structural, morphological, temperature-dependent relative permittivity, and magnetic behavior of nickel ferrite (NiFe_2O_4) nanoparticles prepared via a facile co-precipitation method. A computational analysis, density functional theory (DFT) calculation was carried out to understand the band structure and density of …
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Lecture 5. 1. ПРОЦЕСС СЭДЭВ №5 Эргэлтэт өрөмдлөг (Rotary drilling) Course instructor - Khatanzorig.E (Mining engineering school) ИЛ УУРХАЙН. 2. ЭРГЭЛТЭТ ӨРМИЙН ХОШУУНЫ ТОВЧ ҮҮСЭЛ, ГАРАЛ Course instructor - Khatanzorig.E (Mining engineering school) 20-р зууны ...
Abstract. Octahedral-like NiFe_2O_4 ferrite nanocrystals were synthesized using EDTA-assisted hydrothermal method under mild conditions. XRD and FTIR analysis were used …
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The conductivity for trevorite (NiFe 2 O 4 ) crystal at 800°C is reported in the literature 14, 16 as 20 S/m. The values obtained in this study at 800°C were in excellent agreement at 20-24 S/m.
Будаа тариаг гурил болгон тээрэмдэх хэрэгсэл; Ойролцоо үг [засварлах] Нийлмэл үг [засварлах] тээрэмд орох - тээрмээр гурил татах тээрэм татах - тээрэм эргүүлж гурил хийх
The NiFe 2 O 4 spectrum demonstrates the existence of metal-oxygen stretching vibrations, centered at around 498 and 604 cm − 1 [61, 62]. The FT-IR results of the ferrite and the composite ...
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NiFe_2O_4. NiFe2O4,,NiFe2O4.1994Kato H.H2NiFe2O4CO2,.NiFe2O4 ...
Ni–NiFe 2 O 4 /carbon nanofiber (Ni–NiFe 2 O 4 /CNF) composite materials were synthesized by fast pyrolysis of the FeCl 3 and NiCl 2 preloaded biomass. The as …
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Published 16 April 2013. Materials Science, Physics. Journal of Materials Chemistry. Novel NiFe2O4 nanorod–graphene composites were synthesized by a facile one-step …
Байгалийн нунтаг, өнгө ... ванны бөмбөлөг, ванны давс, ахуйн хэрэглээний бүтээгдэхүүн өөрийн гараар хийх бүх төрлийн Солонгос, Америк чанартай бүтээгдэхүүний нэгдсэн diy дэлгүүр. ...
Өндөр хатуулаг, хэмжээсийн тогтвортой байдал нь вольфрамын карбидын бөмбөлөгүүдийг нарийн бөмбөрцөг хавхлага, хэмжих, шалгах хэрэгсэл, тоолуур, бөмбөлөг холхивч, урсгал хэмжигч, тэнхлэгийн холхивч, дахин эргэлдэх ...
Reports on nickel ferrite (NiFe 2 O 4 ) were also available in the literature exploring the structural properties of the Ni ferrite [39] [40][41]. Prabhakaran and Hemalatha et al. [42] synthesized ...
Бид 20 орчим жилийн туршлагаараа дараах төрлийн галын хорыг цэнэглэж өгч байна: Бүх төрлийн нунтаг /АВС, ВС/. Нүүрсхүчлийн хийн. Усан. Хөөсөн. Автомат. Хийн баллон нь тусдаа. Манай компанид ...
Electric-field controlled magnetism is a potential way to realize strong magneto-electric (ME) coupling for nonvolatile memory applications. The electric field …
Using nickel and ferric nitrates and citric acid, NiFe2O4 nanoparticles are prepared by a simple and cost-effective polyvinylpyrrolidone (PVP) assisted sol–gel auto …
Size-controlled synthesis and magnetic properties of NiFe 2O 4 hollow nanospheres via a gel-assistant hydrothermal route | Request PDF | ResearchGate.
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бөмбөлөг тээрэмдэх онол ба практик ... 3 Сургалтын онолууд ба практик хэрэглээ 4 Сургалтын онолууд ба багшийн загварууд 5 Хүүхдийг судлах сэтгэл зүйн аргуудыг сургалтын практикт хэрэглэх нь ...
объектын технологийн горим орон нутгийн онцлог байдлаас хамааран энэхүү бүлэгт заагдаагүй гал түймэр унтраах бусад төрлийн автомашин, техникийг ашиглаж болно.
Hydrothermal Synthesis and Characterization of CoFe2O4 Nanoparticles and Nanorods. This paper presents a low temperature (130 and 160 °C) synthesis route …
Electric-field controlled magnetism is a potential way to realize strong magneto-electric (ME) coupling for nonvolatile memory applications. The electric field induced nonvolatile modulated magnetization was obtained in NiFe 2 O 4 /SrRuO 3 /Pb(Mg 1/3 Nb 2/3)0.7 Ti 0.3 O 3 (PMN-PT) thin film heterostructures. The collective effect of …
Цар тахалтай холбоотойгоор Хятад талаас "Бөмбөлөг тээвэр" хийх санал гаргаж, түүнийг манай тал дэмжин өнгөрсөн 8 дугаар сараас нүүрс тээврийн үйлчилгээнд нэвтрүүлсэн.
[en] CoFe_2O_4/NiFe_2O_4 core/shell magnetic nanocomposite was synthesized by using hydrothermal method.The analysis of XRD indicated the coexistence of CoFe_2O_4, NiFe_2O_4as core/shell composite. The core/shell structure of the composite sample has been confirmed by HR-TEM images, EDX and FT-IR measurements. The size of …
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Octahedral-like NiFe_2O_4 ferrite nanocrystals were synthesized using EDTA-assisted hydrothermal method under mild conditions. XRD and FTIR analysis were used for composition and structure investigation. XRD analysis revealed a pure ferrite phase with high crystallinity. Morphological investigation by SEM showed octahedral nanocrystals …
,.,NiFe_2O_4,,."863","973" ...
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