Results 1 to 10 of about 1,016 (39)

Microestrutura e propriedades magnéticas de ferritas Ni-Zn-Sm [PDF]

Cerâmica, 2003
Pós nanométricos de ferritas Ni-Zn-Sm foram sintetizados por reação de combustão usando a uréia como combustível. O efeito da substituição dos íons de Fe3+ por Sm3+ na microestrutura e parâmetros magnéticos do sistema Ni0,5Zn0,5Fe2-xSm xO4 com x = 0,0; 0,
A . C. F. M. Costa, M. R. Morelli, R. H. G. A. Kiminami   +2 more
doaj   +7 more sources

Using moss Ceratodon purpureus (Hedw.) Brid for assessing the technogenic pollution (Ni, Zn, Mn, Al, Se, Cs, La, and Sm) of transformed ecotopes of Donbass

Ecosystem Transformation, 2023
Проведен мониторинговый эксперимент установления экотопической разницы по накоплению Ni, Zn, Mn, Al, Se, Cs, La и Sm мохообразным Ceratodon purpureus (Hedw.) Brid в условиях антропогенно нарушенной среды Донбасса.
И.И. Зиньковская, К.Н. Вергель, А.И. Сафонов, Н.С. Юшин, О. Чалигава, А.В. Кравцова   +5 more
semanticscholar   +1 more source

Selective Neodymium Enrichment of Sulfides as a “Fingerprint” of Late Processes of Ore-Formation: Insight into Sm-Nd Isotopes for Sulfides from Magmatic Cu-Ni-PGE Complexes and Hydrothermal Pb-Zn, Au-Mo, and Gold Deposits

Minerals, 2022
The effect of enrichment with Nd in sulfides from magmatic Cu-Ni-PGE complexes and sulfide ores from hydrothermal Pb-Zn, Au-Mo, and gold deposits was found and characterized. This paper concerns the report and analysis of isotopic geochemical data on the
P. Serov
semanticscholar   +1 more source

Co(II), Ni(II), Cu(II) and Zn(II) complexes of 1,8-naphthalimide-based ligand: syntheses, characterizations and evaluation of antibacterial activities

Journal of coordination chemistry, 2023
Mononuclear later first-row transition metal complexes, [M(L)2] (1–4), where M = Co(II) (1), Ni(II) (2), Cu(II) (3), and Zn(II) (4) incorporating 1,8-naphthalimide based ligand were designed.
Sabiha A. Shaikh, S. S. Bhat, V. Revankar, N. S., Mahesha, N. K. Loknath, Vijay Kumbar   +6 more
semanticscholar   +1 more source

Electrical transport properties of V2O5-added Ni–Co–Zn ferrites

Journal of Advanced Dielectrics, 2021
Frequency-dependent dielectric constant, dielectric loss, AC conductivity values and complex impedance spectra of V2O5-added Ni–Co–Zn ferrites (Ni[Formula: see text]Co[Formula: see text]Zn[Formula: see text]Fe2O4 + [Formula: see text]V2O5, where [Formula:
M. Firoz Uddin, M. Samir Ullah, S. Manjura Hoque, F. A. Khan, A. A. Momin, Sm. Rubayatul Islam, F. Salehin, M. A. Hakim   +7 more
semanticscholar   +1 more source

Compósitos de ferrita de Ni-Zn com policloropreno para utilização como materiais absorvedores de radar para a banda S (S-band radar absorbing materials based on Ni-Zn ferrite and polycloroprene composites)

, 2004
The aim of this work was to obtain Radar Absorbing Materials (RAMs) for the frequency range from 2.6 to 4.0 GHz (S-band). The80 wt.% magnetic filler addition to a polychloroprene matrix was a Ni-Zn ferrite.
E. G. Paulo, Mauro S. L. Pinho, R. da, C. Lima, M. L. Gregori, T. Ogasawara, Praia da Bica, J. Bloco   +7 more
semanticscholar   +1 more source

Speciation of heavy metals Cu, Ni and Zn by modified BCR sequential extraction procedure in sediments from Banten Bay, Banten Province, Indonesia

, 2018
Banten Bay is categorized as a marine area that is busy with marine tourism activities, settlements and also industries. One potential impact of the condition is the occurrence of pollution from both industrial and domestic sources, erosion and ...
Lestari, F. Budiyanto, D. Hindarti
semanticscholar   +1 more source

Ferritas Ni-Zn: síntese por reação de combustão e sinterização (Ni-Zn ferrites: combustion reaction synthesis and sintering)

, 2003
This work presents the study of the synthesis for combustion reaction and sintering of Ni-Zn nanometric ferrite powders. The ef fect of the concentration of Zn 2+ in the system Ni1-xZnxFe2O4 was investigated.
A. Costa, M. R. Morelli, R. H. Kiminami
semanticscholar   +1 more source

Avaliação da microestrutura e das propriedades magnéticas de ferritas Ni-Zn dopadas com cobre

, 2008
An evaluation was made of the microstructure and magnetic properties of Ni0.5-xCuxZn0,5Fe2O4 ferrites with x = 0.1, 0.2, 0.3 and 0.4 prepared by combustion reaction with particle sizes 23 to 29 nm.
R. A. Torquato, F. A. Portela, L. Gama, D. R. Cornejo, S. M. Rezende, R. H. Kiminami, A. C. F. M. Costa   +6 more
semanticscholar   +1 more source

Synthesis and Electron Spin Resonance Study of Zn0.7Ni0.3RE0.1Fe1.9O4 (RE = Gd, Sm, Dy) Nanostructured Ferrites

Journal of Superconductivity and Novel Magnetism
The glycol-thermal technique synthesized Zn0.7Ni0.3RE0.1Fe1.9O4 (RE = 0, Gd, Sm, Dy) nanostructured ferrites with fine particles in the 8–13 nm range. X-ray diffraction (XRD) data confirmed a single-phase cubic spinel structure with no impurity peaks for
S. Masuku, J. Msomi, T. S. Mahule, V. Srinivasu   +3 more
semanticscholar   +1 more source