نتایج جستجو برای: barium hexaferrite

تعداد نتایج: 8577  

Journal: :Journal of Magnetism and Magnetic Materials 2022

• Lightweight and thin MXene/doped-hexaferrite composite that can suppress electromagnetic interference is reported. This suppresses waves dominantly via absorption over the frequency range from 30 to 50 GHz. The 1.5 mm thick MXene/45 wt% doped-hexaferrite shows a broad effective bandwidth of 7 developed MXene/BaCo0.3Ti0.3Fe11.4O19 hexaferrite be promising EM wave absorber material for millimet...

Journal: :Annals of the Academy of Medicine, Singapore 2006
Ching Yin Neoh Audrey W H Tan Yung Hian Leow

INTRODUCTION Few reports have documented allergic hypersensitivity reactions after barium gastrointestinal studies. Of these, the barium suspension, its additives or intravenous glucagon given for bowel relaxation has been implicated as possible allergens. We report a patient with delayed hypersensitivity reaction after barium enema and discuss the reasons supporting glucagon as the possible al...

2015
Surinder Paul Devinder Kumar

Barium titanate is a member of a large family of compounds with the general formula ABO3 called perovskites, as the crystal size of barium titanate increases and at critical crystalline size crystal structure of barium titanate transformed from cubic to tetragonal. Transformation of crystal structure is also take place at Curi temperature. Cubic structure show paramagenatic behavior while tetra...

Journal: :Physical review letters 2012
Sae Hwan Chun Yi Sheng Chai Byung-Gu Jeon Hyung Joon Kim Yoon Seok Oh Ingyu Kim Hanbit Kim Byeong Jo Jeon So Young Haam Ju-Young Park Suk Ho Lee Jae-Ho Chung Jae-Hoon Park Kee Hoon Kim

We find the realization of large converse magnetoelectric (ME) effects at room temperature in a magnetoelectric hexaferrite Ba0.52Sr2.48Co2Fe24O41 single crystal, in which rapid change of electric polarization in low magnetic fields (about 5 mT) is coined to a large ME susceptibility of 3200 ps/m. The modulation of magnetization then reaches up to 0.62μ(B)/f.u. in an electric field of 1.14 MV/m...

Journal: :Cerâmica 2021

Ni and La substituted M-type Ca hexaferrite of composition CaNi1Fe11O19 CaLa1Fe11O19 were synthesized by sol-gel auto combustion method using metal nitrates as oxidants citric acid reducing agent. The prepared samples characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), energy dispersive analysis (EDAX), vibrating sample magn...

2005
P. B. Frappe R. W. Rose

The gastric distribution of barium sulphate and its subsequent intestinal passage were examined by radiography in Potorous tridactylus. Barium sulphate administered in association with solid food passed to the sacciform forestomach from the tubiform forestomach. However, ingested barium sulphate suspension mainly entered the hindstomach via the gastric sulcus. Barium sulphate which entered the ...

Journal: :Neuroscience letters 1993
B Sutor J J Hablitz

The effect of low concentrations of barium on the membrane properties of rat neocortical neurons was studied in vitro. Potassium currents were examined using single-electrode current- and voltage-clamp techniques. Neurons responded to bath application of barium (10-100 microM) with a membrane depolarization associated with an increase in input resistance. Under voltage clamp conditions, an inwa...

2015
Luana Mores Eduardo Luzia França Núbia Andrade Silva Eliane Aparecida Suchara Adenilda Cristina Honorio-França

PURPOSE Nutrients and immunological factors of breast milk are essential for newborn growth and the development of their immune system, but this secretion can contain organic and inorganic toxins such as barium. Colostrum contamination with barium is an important issue to investigate because this naturally occurring element is also associated with human activity and industrial pollution. The st...

1997
A. E. Gómez X. Luri S. Grenier L. Prévot J. Torra

The absolute magnitude of barium stars has been obtained from kinematical data using a new algorithm based on the maximum-likelihood principle. The method allows to separate a sample into groups characterized by different mean absolute magnitudes, kinematics and z-scale heights. It also takes into account, simultaneously, the censorship in the sample and the errors on the observables. The metho...

Journal: :Environmental Health Perspectives 1990
R G Wones B L Stadler L A Frohman

Higher cardiovascular mortality has been associated in a single epidemiological study with higher levels of barium in drinking water. The purpose of this study was to determine whether drinking water barium at levels found in some U.S. communities alters the known risk factors for cardiovascular disease. Eleven healthy men completed a 10-week dose-response protocol in which diet was controlled ...

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