ChemInform Abstract: Water‐Soluble Fluorescent Conjugated Polymers and Their Interactions with Biomacromolecules for Sensitive Biosensors
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Materials Literature
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First-principles calculations of phase transition and elasticity for TiZr alloy
Structure, phase transition, and elasticity of the equiatomic TiZr alloy are investigated by using first-principles density-functional theory. Our calculated lattice parameters and equation of state for α and ω phases are in good agreement with experiments. Phase transition sequence of α→ω→β is also calculated to coin…
Desenvolvimento de nanocompósitos poliméricos biodegradáveis a partir de pectina, amido e nanofibras decelulose
O presente trabalho teve como objetivo a preparação de filmes biodegradáveis a partir de blendas de pectina (PEC) e amido termoplástico (TPS) e o uso de nanofibras de celulose (NCel) como agente de reforço para modificação das propriedades mecânicas destes materiais. O trabalho foi conduzido em três momentos de estudo…
Estudo da estabilidade das propriedades mecânicas e químicas de compostos de borracha vulcanizados com enxofre após envelhecimento térmico e oxidativo.
A minha esposa Bianca e a minha filha Júlia, minhas maiores paixões.v Agradecimentos A Deus, que sempre nos acompanha em nosso caminho.Aos meus pais, Afonso e Nida, que sempre me apoiaram e me incentivaram.Sem eles, nada disso seria possível.A minha esposa Bianca e nossa filha Júlia, as minhas inspirações, pela paciên…
Avaliação do uso de resíduos sólidos inorgânicos da produção de celulose em materiais cerâmicos.
Resíduos sólidos inorgânicos, dregs e grits, gerados no processo de produção de celulose foram caracterizados tecnologicamente e avaliados quanto à viabilidade de serem incorporados na composição de materiais cerâmicos tradicionais.Formulações contendo proporções variadas desses resíduos em uma matriz de argila de emp…
Dissolution of Chitosan in Ionic Liquids for Acylation Chemistry and Formation of Cellulose-Chitosan Blends
Dissolution of chitosan in ionic liquids was accomplished. It has been shown that 1-butyl-3-methylimidazolium acetate (BMIMAc) is a better solvent than 1-butyl-3-methylimidazolium chloride (BMIMCl). Dissolution of chitosan in BMIMCl required a prior regeneration of chitosan from 1% acetic acid solution. In the case of…
An investigation of the electrowinning of copper with dimensionally stable titanium anodes and conventional lead alloy anodes
The traditional anodes of choice in the electrowinning industry have been lead based \nanodes. However, these anodes display high energy consumption and low corrosion \nresistance during operation. These problems led to the investigation of other anode \nmaterials such as dimensionally stable anodes (DSAs), consisting…
Alternative Routes of Polysaccharide Acylation: Synthesis, Structural analysis, Properties
List of Tables List of Tables Tab.2.1: Conditions and results of esterification of cellulose dissolved in DMAc/LiCl mediated with Tos-Cl with different carboxylic acids Tab. 2.2: Conditions and results of esterification of cellulose dissolved in DMAc/LiCl with αlipoic acid in situ activated with Tos-Cl 23 and CDI 24-2…
Polar continuum mechanics
The existing polar continuum theory contains unresolved indeterminacies in the spherical part of the couple-stress tensor. This severely restricts its applicability in the study of micro and nano-scale solid and fluid mechanics and, perhaps more importantly, in the investigation of fluid turbulence phenomena, which in…
Magnetic structure and orbital ordering in KCrF3 perovskite
KCrF3 represents another prototypical orbital-ordered perovskite, where Cr2+ possesses the same electronic configuration of 3d4 as that of strongly Jahn-Teller distorted Mn3+ in many CMR manganites. The crystal and magnetic structures of KCrF3 compound are investigated by using polarized and unpolarized neutron powder…
ChemInform Abstract: B‐19: An Aromatic Wankel Motor
Abstract Born—Oppenheimer molecular dynamics simulation
Structural heterogeneity of diamond-containing detonation material
Diamond-containing material (DCM) synthesized by detonation was separated into fractions. Raman and infrared spectra and X-ray diffraction patterns of the individual fractions were measured. The particles of this material were characterized by the variable ratio of the diamond (sp3) and non-diamond components. The dis…
Pulsed laser-deposited SnOx: plasma expansion dynamics effects
Nanostructured thin films were deposited by excimer laser ablation of a hot pressed SnO2 target at the fixed laser fluence of 1.0 J cm−2 in a controlled oxygen atmosphere. Information about the film's structural properties has been obtained by means of micro-Raman and X-ray photoelectron spectroscopies. A different fi…
Direct plasma injection scheme with various ion beams
The laser ion source is one of the most powerful heavy ion sources. However, it is difficult to obtain good stability and to control its intense current. To overcome these difficulties, we proposed a new beam injection scheme called “direct plasma injection scheme”. Following this it was established to provide various…
Monte Carlo simulation of the effect of miniphantom on in‐air output ratio
PURPOSE: The aim of the study was to quantify the effect of miniphantoms on in-air output ratio measurements, i.e., to determine correction factors for in-air output ratio. METHODS: Monte Carlo (MC) simulations were performed to simulate in-air output ratio measurements by using miniphantoms made of various materials…
K2[Hg(SO3)2]·2.25H2O
The characteristic feature of the structure of the title compound, dipotassium bis(sulfito-κS)mercurate(II) 2.25-hydrate, is a layered arrangement parallel to (001) where each of the two independent [Hg(SO(3))(2)](2-) anions are grouped into centrosymmetric pairs and are surrounded by two K(+) cations to give the over…
Comparative Study of Pure and Doped Single Crystals of Lead Iodide Dihydrate and Lead Tartrate Dihydrate Grown in Silica Gel Using Fourier Transform Raman Spectra
It is presented the FT-Raman spectroscopic investigation of the lead tartrate dihydrate and lead iodide dihydrate.The difference in the spectroscopic behavior of these salts were found which can be attributed to a different geometry of the tartrate and iodide ions. The structural differences between the coordination e…
Roles for the two N‐terminal (β/α) modules in the folding of a (β/α)8‐barrel protein as studied by fragmentation analysis
The (β/α)₈-barrel is one of the most abundant folds found in enzymes. To identify the independent folding units and the segment(s) that correspond to a minimum core structure within a (β/α)₈-barrel protein, fragmentation experiments were performed with Escherichia coli phosphoribosylanthranilate isomerase, which has a…
Internal friction of an Al–Cu–Fe icosahedral quasicrystal and its crystal approximant
The internal friction was measured for an Al–Cu–Fe icosahedral phase (i-phase) and an Al–Cu–Fe–Si 1/1 approximant phase (1/1-phase) by using a dynamical mechanical analyzer (DMA) in the frequency range 0.05–10 Hz and the temperature range 300–873 K. For the i-phase, four absorption peaks were observed at around 420, 5…
A urea adduct of bis(hinokitiolato)copper(II)
Bis(μ(2)-3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)bis[(3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olato)copper(II)]-urea-acetone (1/6/2), [Cu(2)(C(10)H(11)O(2))(4)]·6CH(4)N(2)O·2C(3)H(6)O, where 3-isopropyl-7-oxocyclohepta-1,3,5-trien-1-olate is the systematic name for the hinokitiolate anion, contains three nov…