Materials Literature
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Levantamento dos representantes da família Pinnulariaceae (Naviculales, Bacillariophyceae) do Parque Estadual das Fontes do Ipiranga, São Paulo, Brasil. Foram identificados dois gêneros (Caloneis com 1 e Pinnularia com 12 espécies) e 20 táxons no total, distribuídos em 13 espécies e sete variedades não típicas de suas…
The present study reports some preliminary investigations on the antibacterial activity of nanostructured poly(1-naphthylamine) (PNA) and its composites with polyvinyl alcohol (PVA) and polyvinylchloride (PVC). The antibacterial activity was evaluated against Escherichia coli and Staphylococcus aureus. The particle si…
Interaction of [Ce(L(OEt))(2)(NO(3))(2)] (L(OEt)(-) = [Co(eta(5)-C(5)H(5)){P(O)(OEt)(2)}(3)](-)) with (NH(4))(6)[Mo(7)O(24)] in water affords the cerium(iv)-containing oxomolybdenum cluster [H(4)(CeL(OEt))(6)Mo(9)O(38)], which exhibits a unique Ce(6)Mo(9)O(38) core structure.
Clothing ergonomics is the science of fitting the clothing to the wearers by understanding the relation between clothing and body shape. Body measurement charts are necessary for successfully designing and sizing clothing. Many body measurement charts have used the girth difference based on anthropometric data to dete…
Mg97.3Zn2.3Y0.4 alloy has been subjected to twin-roll casting (TRC) process. As-cast microstructure consists of α-Mg dendrite and icosahedral interdendritic phase. The icosahedral phase present in TRC alloy is found to be thermally unstable and transforms to H-phase and W-phase during subsequent thermo-mechanical trea…
The as-cast microstructure of Mg-5Al-3Ca-xNd alloys consists of equiaxed α-Mg matrix, (Mg, Al)2Ca eutectic phase and Al-Nd rich intermetallic compounds. With the increase of Nd addition, α-Mg matrix morphology was changed from dendritic to equiaxed grains due to suppression of grain growth by formation of homogeneous…
Inorganic thin films (hydroxide, oxide, and phosphate materials) that are textured on a submicron scale have been prepared from aqueous metal salt solutions at room temperature using vapor‐diffusion catalysis. This generic synthesis approach mimics the essential advantages of the catalytic and structure‐directing mech…
The wettability between Nd2Fe14B and Nd-rich phases has been investigated through the sessile drop method. The compositions of prepared Nd-rich ingots were Nd72.0Fe26.1B1.9 (ternary) and Nd72Fe22.4Cu3.7B1.9(Cu-added). Nd-rich ingots were cut and put on a polished Nd2Fe14B plate and heated in a furnace. Contact angles…
The photoluminesecence (PL) of porous ZnO films modified with Eu 3+ ions was studied. The samples were fabricated by electrodeposition using eosin Y (EY) dye molecules. Scanning electron microscopy images and X-ray diffraction patterns showed that the porous films have nanometer-scale networks and become finer with in…
During the course of our study on the photochemistry of 1-alkoxy-9,10-anthraquinones, we have developed a second generation of a caged 4-hydroxy-trans-2-nonenal (4-HNE). As we optimized the anthraquinonyl chromophore to achieve water solubility, we studied the photochemistry of various substituents to understand their…
Quality is a multicriteria phenomenon that requires the simultaneous satisfaction of several criteria. In this study, we objectively represented the global quality of knits using a global quality index to simulate the consumer satisfaction degree. Every transformation function for each property gives the equivalent of…
We have deposited diamond-like carbon (DLC) films by plasma-enhanced chemical vapor deposition using CH 4 and Ar gases, and have investigated the structure, chemical bonding, adhesion strength, and tribological properties of the deposited films. The film properties have been characterized by visible Raman spectroscopy…
We present briefly a theoretical model of viscous friction in foams and concentrated emulsions, subject to steady shear deformation. In this model we calculate (1) energy dissipated inside the planar films between two neighboring bubbles/drops, which slide along each other dragged by the flow, and (2) energy dissipate…
Polyurethanes (PU) are a group of versatile polymers finding a lot of engineering uses due to their favorable and tunable properties and processing advantages. Although considerable amount of work has been reported on the polyurethane-montmorilonite nanocomposite, there is not much literature available on the polyuret…
The magnetoelectric (ME) effect in ferrite-piezoelectric ceramic composites based on a nickel ferrite spinel and lead zirconate titanate (PZT) has been theoretically and experimentally studied. Using the method of effective medium, an expression for the ME coefficient is obtained and its frequency dependence is analyz…
It is well known that an iron oxide layer formed on a surface of work piece plays an important role of lubricating properties in hot rolling. However, a few papers fully reported the influence of the iron oxide layer on lubricating properties. Therefore, we investigated the influence of compositions and thickness of t…
Abstract The characteristics of CO and NO molecules at Cu 2+ and Cr 3+ ion sites on the CuCr 2 O 4 (100) surface have been studied by first principles calculations based on spin‐polarized density functional theory (DFT). The calculated results show that adsorption energies for X‐down(C, N) adsorption vary in the order…
Microreactors can be used for continuous operation and precise control of heating conditions in chemical synthesis. Therefore, microreactors are expected to offer a more efficient strategy for obtaining homogeneous nanocrystals and easier of size control than the general batch reaction system. CdSe nanocrystals can be…
This contribution introduces a thermodynamically consistent, fully electro-mechanically coupled micro-mechanical model for ferroelectric materials. Adopting a phase field concept, in which the spontaneous polarization is used as order parameter, a Ginzburg-Landau type theory is formulated for the evolution of the orde…
The characteristics of chloride removal from simulated cast iron artefacts by electrochemical methods were studied. The effects of current and potential on chloride removal were investigated in both galvanostatic and potentiostatic modes. The composition of the rusts before and after treatment were analysed by X-ray d…