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Article
Ageing of (Pb, La)(Zr, Ti)O3 ferroelectric ceramics and the space charge arising on hot poling
Polarization-temperature diagrams of pyroelectric charge and the decrease of remanent polarization (P R) at constant temperature are investigated in PLZT 8/65/35 ceramic samples. The arousal of space charge is sh...
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Article
Poling of (Pb, La)(Zr, Ti)O3 ferroelectric composite
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Chapter and Conference Paper
Reproductive variations of cladocerans in grasslands periodically flooded for irrigation in Mantecal, Venezuela
The present work is a study of the cladoceran fauna and its reproduction during drought, in grasslands modified by embankment for irrigation be periodical flooding at Mantecal, Venezuela. Due to the importance...
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Article
Reproductive variations of cladocerans in grasslands periodically flooded for irrigation in Mantecal, Venezuela
The present work is a study of the cladoceran fauna and its reproduction during drought, in grasslands modified by embankment for irrigation be periodical flooding at Mantecal, Venezuela. Due to the importance...
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Article
Ferropiezoelectricity of calcium modified lead titanate ceramics
When a ceramic with grain Boundaries rich in OPb is poled Beyond 4O kV cm−1 at ferroelectric phase, the highest anisotropy of electromechanical coupling factor is obtained. An attempt to explain this Behaviour is...
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Article
Physicochemical characterisation of lead titanate solutions applied to the processing of thin films
A new sol-gel method, in which dihydroxy alcohols are used as solvents, is described for the preparation of lead titanate thin films. Infrared spectroscopy and measurements of viscosity are used to study the r...
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Article
Organochlorine pollutants in meats and cow's milk from Madrid (Spain)
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Article
Mechanical characterization of calcium-modified lead titanate ceramics by indentation methods
The microstructural dependence of the mechanical properties of Ca-modified lead titanate piezoelectric ceramics were studied. To this end, a combination of the Vickers and Knoop indentation techniques at diffe...
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Article
Ferroelectric thin films of calcium modified lead titanate by sol-gel processing
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Article
Influence of dissolved humic material and ionic strength on C8 extraction of pesticides from water
A mixture of twelve intermediate polarity pesticides, mostly carbamate-type, have been chromatographied on an octadecyl-silica bonded-phase column using acetonitrile-water gradient mobile phase and UV detectio...
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Article
Levels of PCDDs and PCDFs in Human Milk from Populations in Madrid and Paris
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Article
Influence of Bi-site Substitution on the Ferroelectricity of the Aurivillius Compound Bi2SrNb2O9
Ceramics based on the composition Bi2SrNb2O9 with isomorphic substitutions of cations in the Bi2O22+ and the perovskite layers, Bi2−xTexSr1−xNa(K)xNb2O9, have been prepared by solid state reaction. The ferroelect...
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Article
Evaluation by HPLC-UV of Polar Pesticides in Rice Fields
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Article
Heavy Metals in the False Mussel, Mytilopsis domingensis, from Two Tropical Estuarine Lagoons
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Article
Mechanistic insights on the inhibition of tumor angiogenesis
Angiogenesis, the growth of new vasculature, is an absolute requirement for the maintenance and progression of the overwhelming majority of the solid tumors. Unraveling the mechanisms that govern this complex ...
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Chapter and Conference Paper
Glucocorticoid Receptor Antagonism of AP-1 Activity by Inhibition of MAPK Family
Glucocorticoid hormones have multiple important physiological and therapeutic activities. They function by controlling the expression of target genes through the binding to specific glucocorticoid receptors (G...
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Article
Strict Minimality Conditions in Nondifferentiable Multiobjective Programming
In this paper, sufficient conditions for superstrict minima of order m to nondifferentiable multiobjective optimization problems with an arbitrary feasible set are provided. These conditions are expressed through...
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Article
Influence of a Mine Tailing Accident Near Doñana National Park (Spain) on Heavy Metals and Arsenic Accumulation in 14 Species of Waterfowl (1998 to 2000)
This article presents the impact on waterbirds in Doñana National Park (Spain) of an accidental release of 5 million m3 acid waste produced by the processing of pyrite ore. Heavy metals (zinc, copper, cadmium, an...
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Article
On Approximate Efficiency in Multiobjective Programming
This paper is focused on approximate ( \(\varepsilon\) -efficient) solutions of multiobjective mathematical programs. We introduce a new \(\varepsilon\) ...
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Article
Characterization of the Cone of Attainable Directions
A useful characterization of the cone of attainable directions is provided.
