Materials Literature
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Este trabalho de tese de doutorado visou identificar as matérias primas naturais produzidas no Brasil e possíveis de serem utilizadas na produção de concretos de elevada massa específica
Nanogenerators capable of converting energy from mechanical sources to electricity with high effective efficiency using low-cost, nonsemiconducting, organic nanomaterials are attractive for many applications, including energy harvesters. In this work, near-field electrospinning is used to direct-write poly(vinylidene…
Two neutral lipophilic Ga(III) complexes, gallium maltolate ([Ga(ma)3]) and gallium quinolinate ([Ga(q)3]), have shown potential in literature reports as orally administered anti-cancer drugs. This anticancer activity is postulated to be mainly due to interference with Fe(III) metabolism, through selective induction o…
In a recent article [T. K. Bose and J. Saha, Phys. Rev. E 86, 050701 (2012)], we have presented the results of a Monte Carlo simulation study of the systems of dipolar Gay-Berne ellipsoids where two terminal antiparallel dipoles are placed symmetrically on the long axis of each ellipsoid, and the results revealed the…
A detailed structural knowledge of the complex and dynamic interplay of the ribosome with mRNA, tRNA, and other protein factors is necessary to understand translation in molecular terms. Cryo-electron microscopy together with single-particle analysis has enabled direct visualization of the Escherichia coli ribosome in…
In this work ternary CdZnS thin films were prepared by chemical bath deposition by doping CdS with different concentrations of Zn ions. The chemical bath comprised of cadmium nitrate [Cd(NO3)2], as a source of Cd2+, zinc nitrate [ZnNO3)2] as source of Zn2+, thiourea [(NH2)CS] as a source of sulphide ions [S2-]in the p…
Understanding the effects of aged microstructures on the thermomechanical fatigue (TMF) properties of nickel-base (Ni-base) superalloys remains unclear. Few experimental results are currently available in this area, and of the limited results available, some promote aged microstructures as beneficial, while others as…
The formation of two cell types with differing developmental fates, a small forespore and a large mother cell, is the first morphological indication of early sporulation in Bacillus subtilis. The study of phosphate metabolism in Bacillus species in general and in B. subtilis in particular has been complicated by two f…
Bearings are employed in a number of applications under extremely demanding conditions. During long operation times, the material undergoes rolling contact fatigue where microstructural damage manifests as dark-etching regions and white-etching areas, which display different properties from the surrounding region. The…
What are the basic transformation principles and essential transformer parts?
The title compound, (C3H5N2)2[Fe(CN)5(C3H4N2)], is composed of a mononuclear [Fe(CN)5(pyrazole)](2-) dianion and two 1H-pyrazol-2-ium cations. A three-dimensional supramolecular network is formed through a rich scheme of N-H...N hydrogen bonds and C-H...π interactions among the cations and anions.
Macro-pore volume mesoporous alumina (MMA) synthesized by secondary nano-assembly method was applied as support for Mo-Ni-P catalyst. The samples were characterized by mercury intrusion method, XRD, TEM, and SEM. They displayed simultaneously enough active sites and particular larger pores structure. By taking advanta…
OBJECTIVE: To evaluate cerebral oxidative stress in amyotrophic lateral sclerosis (ALS), we applied positron emission tomography (PET) with [62Cu]diacetyl-bis(N4-methylthiosemicarbazone) (62Cu-ATSM) to ALS patients. BACKGROUND: The effects of oxidative stress and mitochondrial dysfunction on neurodegeneration in the p…
TRENDSBasically, the life expectancy of a power transformer is quite long, known to be around forty years of service before it needs replacing.Nevertheless, during service life of a power transformer, it is necessary to constantly maintain it, mainly in order to make the transformer operate safely as long as possible.…
H4SiW12O40 (abbreviated as SiW) and Pt supported on carbon graphite (CG) with different Pt/SiW ratios were prepared and characterized by FTIR, XRD, ICP-OES, polarography, and TEM. The prepared catalysts were then after successfully attached onto glassy carbon electrodes by using polyvinylidene difluoride (PVDF) as bin…
The Radon Program of the Czech Republic 2010-2019--Action Plan is based on Governmental Decision No. 594/2009 (Radon Program of the Czech Republic 2010-2019--Action Plan, Government of the Czech Republic, Decision No. 594/2009, May 4 2009) and is coordinated by the State Office for Nuclear Safety. It covers both preve…
Ba4LaTi0.3Sn0.7O15ceramic was prepared through conventional solid state mix oxide route followed by characterization using X-ray diffraction (XRD) and scanning electron microscope (SEM) for phase and microstructural investigation. The dielectric properties at low and microwave frequencies were measured using LCR meter…
OBJECTIVE: To test whether breakdown of the blood-brain barrier (BBB) occurs during migraine attacks. BACKGROUND: It has been discussed for decades whether a breakdown of the BBB might facilitate migraine medications, such as dihydroergotamine (DHE), gaining access to central sites of action despite unfavorable physic…
We performed first-principles calculations for two Mn -doped structures in which Mn atoms substitute Ti atoms to determine whether (i) it is more conducive to Mn ion doping and (ii) ferromagnetism can occur in F adsorption anatase TiO 2 surfaces. Ferromagnetic (FM) coupling is more stable than antiferromagnetic (AFM)…
In this paper, three-dimensional (3D) Cu 0.45 Mn 0.55 O 2 nanoflowers self-assembled by interconnecting dense stacked single-crystalline nanoplates have been prepared using the template-free hydrothermal growth method. The morphology, phase structure and composition of the as-prepared nanomaterial were characterized b…