Materials Literature
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Pb-based complex perovskites with Fe 3+ like Pb(Fe 2/3 W 1/3 )O 3 (PFW) were found to be interesting because of their unique properties such as relaxor and magnetoelectric behavior. PFW is ferroelectric with ferroelectric Curie temperature T C between 150 and 200 K and at the same time is antiferromagnetic with magnet…
In this paper we investigated the intrinsic impact of Bi(Zn 1/2 Ti 1/2 )O 3 (BZT) addition on the crystallographic and ferroelectric properties of Pb(Zr 0.4 Ti 0.6 )O 3 (PZT) thin films deposited by sol-gel technique. We could emphasis the shrinkage of lattice parameters, leading to a decrease of spontaneous polarizat…
In the present study Bi 9 Fe 5 Ti 3 O 27 ceramics has been fabricated by solid state reaction from the mixture of simple oxides viz. Bi 2 O 3 , TiO 2 and Fe 2 O 3 . Stoichiometric mixture of the powders was thermally analysed so parameters of the thermal treatment were determined. The EDS measurements have proved cons…
To explore the potential of 3-dimensional trans-vaginal elastography in the evaluation of fibroids. 10 women with known fibroids attending for trans-vaginal ultrasound were recruited to have 3-dimensional trans-vaginal ultrasound elastography. Stradwin software (http://mi.eng.cam.ac.uk/∼rwp/stradwin/) running on an Ul…
This chapter contains sections titled: Introduction Spin-Crossover in Fe(II) Complexes Ligand Field Molecular Mechanics Molecular Discovery for New SCO Complexes Dynamic Behavior of SCO Complexes Light-Induced Excited Spin-State Trapping Summary and Future Prospects References
El trabajo de investigacion analiza el estudio del proceso de oxo-transformacion de propano, por activacion termica y fotoinducida, y el estudio de catalizadores soportados que contienen vanadio en su formulacion. Para abordar tales objetivos se establecio un programa que se extendio desde la sintesis de los materiale…
Esta Tesis ha permitido racionalizar las bases quimico-fisicas que gobiernan y determinan las estructuras moleculares y electronica de oligotiofenos tetracianosustituidos mediante el analisis de la Beta-tetracianosustitucion (oligotiofenos quinoides) y de la s-tetracianosustitucion. Se ha analizado tambien el efecto d…
La presente tesis doctoral es una investigacion acerca de la elaboracion de modelos para procesos industriales de alta complejidad. En concreto se realizara el diseno, desarrollo e implantacion de un modelo hibrido empirico-estequiometrico, que sea aplicable en un entorno tan dificil y especializado como el de la fabr…
AISI H13 steel is widely used for extrusion moulds and other hot work tools fabrication, due to its high toughness, strength and hardness around 56 HRC (Rockwell C). However, this steel possesses a relatively low wear resistance, which reduces its life time under high loading conditions. The aim of this work was to en…
Murutiferroics material has been many attention due to which has enhanced magnetoelectric (ME) effect. We suggest stacking thin film which has ME effect material/ferromagnetic material/ferroelectric material/ferromagnetic material/ME effect material structure. We have observrd enhanced ME effect in this stacking thin…
In the centrosymmetric binuclear title compound, [Cu(2)(C(8)H(3)ClO(4))(2)(C(12)H(12)N(2))(2)(H(2)O)(4)], the Cu(II) ion is six-coordinated by two N atoms from a 5,5'-dimethyl-2,2'-bipyridine ligand, two bridging O atoms from two 3-chloro-benzene-1,2-dicarboxyl-ate ligands and two water mol-ecules in a distorted octa-…
Abstract Prostate cancer (PCa) is the most common malignancy and the second leading cause of cancer death in American men. Due to the lack of accurate tests to distinguish aggressive cancer from indolent tumor, prostate cancer is often over-treated. Post-surgery pathology analysis revealed that 30% of tumors removed b…
Nitrile Rubber (NBR) and Styrene Butadiene (SBR) are commonly considered as workhorse of the industrial and automotive rubber product industries. Crude NBR is used in fuel and oil handling hose, seals and grommets, and water handling applications. With a temperature range of –40 °C to 125 °C, NBR materials can withsta…
O presente trabalho apresenta estudos de caracterização reológica e determinações de fatores de atrito em três polpas de bauxita, originárias da Mina de Miltônia, Paragominas – Pará, resultantes de condições operacionais com graus diferentes de moagem. Deste modo, a diferenciação básica entre as mesmas reside na distr…
Ferroelectric-like hysteresis loops of CaCu3Ti4O12 (CCTO) ceramic have been observed. We found that this unusual feature does not arise from the displacement of the Ti ions in the TiO6 octahedron, but apparently comes from the charges at the grain boundaries which consist of a CuO layer. The relaxation time of 2.9 mil…
This article reports the retraction of five articles published in Acta Crystallographica Section E between 2004 and 2011.
ITER project is progressing and the structural material of the blanket will be conventional stainless steels. In the future, the SiC/SiC composites will be employed as the important part of the reactor. Main construction of the reactor will be keep stainless steels such as SUS316L and RAFM steels, the interface techno…
We have studied the pressure effect on electronic structures and magnetic orders of ternary iron selenide K$_{0.8}$Fe$_{1.6}$Se$_2$ by the first-principles electronic structure calculations. At low pressure, the compound is in the blocked checkerboard antiferromagnetic (AFM) semiconducting phase, as observed by the ne…
This chapter contains sections titled: Introduction: Localized Bonding Concepts in Copper Chemistry Localized Bonds and Molecular Geometries in Polyatomic Cu Complexes Copper Blue Proteins and Localized Bonds Summary References
Es wird eine Methode zur Bestimmung des Gesamtgehaltes von Fluor in verschiedenen Matrices vorgestellt, die erstmalig unabhängig von der Bindungsform des Analyten Fluor ist und auch für nichtwässrige Lösungen eingesetzt werden kann. \nDie Methode beruht auf der analytischen Auswertung der Molekülabsorption (MA) von Ga…