Results 191 to 200 of about 40,105 (240)

Electrical properties and chemical characterization of PMN and 0.90 PMN-0.10PT

1999 IEEE Ultrasonics Symposium. Proceedings. International Symposium (Cat. No.99CH37027), 2003
The relationships between the synthesis and processing, atomic-level and long-range structure, and the electrical properties of lead magnesium niobate, Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/ (PMN), and the solid solution systems with lead titanate, PbTiO/sub 3/ (PT), have been investigated.
L.F. Brown, J. Huang, J.J. Fitzgerald, N.R. Burghardt, J.C. Winker   +4 more
openaire   +1 more source

Sulfide Enhancement of Pmn Apoptosis

Immunopharmacology and Immunotoxicology, 1998
Hydrogen sulfide is a toxic metabolite released by several bacterial agents under anaerobic conditions. In the present paper, we investigated the effects of sulfide on polymorphonuclear cell (PMN) apoptosis, a mechanism suggested for limiting the toxic potential of neutrophils in inflammatory sites.
MARIGGIO', Maria Addolorata, MINUNNO V, RICCARDI S, SANTACROCE R, DE RINALDIS P, FUMARULO, Ruggiero   +5 more
openaire   +3 more sources

PMNS for cryptography: A guided tour

Advances in Mathematics of Communications
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Nicolas Méloni, François Palma, Pascal Véron   +2 more
openaire   +3 more sources

Leukodiapedesis, Compartmentalisation and Secretion of PMN Leukocyte Proteinases, and Activation of PMN Leukocyte Procollagenase

1991
Human polymorphonuclear leukocytes (PMNL) are the first phagocytic cells to arrive at the site of injury of the epithelium, where they regulate the defense reactions against invading microorganisms. Therefore, their accumulation characterises an inflammatory process. Some particular properties of PMNL (Fig.
Tschesche, Harald, Bakowski, B, Schettler, A, Knauper, V, Reinke, H, Kramer, S   +5 more
openaire   +3 more sources

Pulsed Laser Deposition of High-Epsilon Dielectrics: PMN and PMN-PT

MRS Proceedings, 1992
ABSTRACTIn this study we report on the KrF excimer laser deposition of crystalline films of lead magnesium niobium oxide (PMN) and solid solutions of PMN and lead titanate (PT) in a 65:35 ratio. These materials have potential microelectronic applications as thin film capacitors due to their high dielectric constants (εPMN(bulk) ≥ 10,000).
K.L. Saenger, R.A. Roy, D.B. Beach, K.F. Etzold   +3 more
openaire   +1 more source

Dielectric nonlinearity of ferroelectric solid solutions PMN-PZN and PMN-PNN

Ferroelectrics, 2001
Abstract Obtaining of novel thin film materials for electrically tuneable capacities is one of the current problems of ferroelectric material application. The most appropriate materials are the ferroelectric lead-containing niobates: PbMg1/3Nb2/3O3 (PMN), PhZn1/3Nb2/3Os (PZN), PbNi1/3Nb2/3O3 (PNN) and their solid solutions were synthesized by solid ...
K. Bormanis, M. Dambekalne, A. Sternberg, A. Kalvane, G. Grinvald   +4 more
openaire   +1 more source

Dynamics of Polar Clusters in PMN Ceramics: Comparison with PMN Single Crystal

Ferroelectrics, 2006
The dielectric permittivity of PMN ceramics was measured in the frequency range from 20 Hz to 37 GHz. From the frequency dependence of the real and imaginary parts of dielectric permittivity, the distribution of relaxation times f(τ) was calculated. The f(τ) function broadens significantly, and the second maximum appears below the 270 K temperature ...
R. Grigalaitis, J. Banys, A. Sternberg, K. Bormanis, V. Zauls   +4 more
openaire   +1 more source

Microstructure and Piezoelectric Properties of PMN-PNN-PZT Ceramics with the Variation of PMN

Transactions on Electrical and Electronic Materials, 2018
In this paper, in order to develop the composition ceramics with the high piezoelectric properties for ultrasonic transducer, Pb[(Mn1/3Nb2/3)x(Ni1/3Nb2/3)0.10(Zr0.48Ti0.52)0.90−x]O3 ceramics were fabricated with the variation of Pb(Mn1/3Nb2/3)O3. The effects of Pb(Mn1/3Nb2/3)O3 (abbreviated as PMN) on their microstructure and piezoelectric properties ...
Ju-Hyun Yoo, Sang Won Kim, Eun-Sup Lee, Nak-Gu Choi, Hoy-Seung Jeong   +4 more
openaire   +1 more source

The influence of thermal treatment on the preparation of PMN and PMN–PT thin films

Materials Characterization, 2003
Abstract Ferroelectric thin films belong to a class of materials with great technological importance in optic fibers, microelectromechanical systems, and microprocessors and computers memories. The (1−x)PbMg1/3Nb2/3O3(x)PbTiO3 (PMN–PT) thin films, with x=0, 0.1, 0.35 and 0.5, were prepared by Pechini's process and deposited by spin-coating on Si(100)
Spagnol, P. D., Valadares, L. F., Varela, José Arana, Bertochi, MAZ   +3 more
openaire   +2 more sources

Ratio of bacteria to polymorphonuclear neutrophils (PMNs) determines PMN fate.

Shock (Augusta, Ga.), 1999
This study was designed to investigate how live Escherichia coli influence the fate of polymorphonuclear neutrophils (PMNs) in vitro. PMNs from 10 healthy volunteers were cocultured with or without live E. coli at different ratios. Heat-killed E. coli (Hk) were also added to PMNs at a ratio of 1:10.
T, Matsuda, H, Saito, T, Inoue, K, Fukatsu, M T, Lin, I, Han, S, Furukawa, S, Ikeda, T, Muto   +8 more
openaire   +1 more source