Materials Literature
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In the present paper a new miospore genus Anabaculites is described from the glacial deposits of San Gregorio Formation of Northern Uruguay, considered of Upper Carboniferous age; however, the author's opinion is that they probably are of Permian age. The genus is referred to the Infraturma Apiculati.
Repair materials for concrete bridge structures are used for example: – to fill the losses in load-bearing elements, which have arisen as a result of mechanical damage and caused by the corrosion; – to lay the levelling layer on bridge deck, in particularly loaded with pedestrian or vehicle traffic; – to retrofit and…
Coarctate reactions are defined as reactions that include atoms at which two bonds are made and two bonds are broken simultaneously. In the pursuit of the discovery of new coarctate reactions we investigate the fragmentation reactions of cyclic ketals. Three ketals with different ring sizes derived from indan-2-one we…
Part of the definition of Psammodiscus is that there is always a small pore and sometimes a rimoportula present on the valve centre. A new species Psammodiscus calceatus Tsuy.Watanabe, Nagumo & J. Tanaka is described, which lacks a central small pore. And the valves of P. nitidus were found that have two marginal rimo…
En esta revisión se compararon los procesos individuales de obtención de sílice y carbón activado con un proceso de producción conjunta. En la primera parte se enumeran las variables y procesos propios de la producción de cada material de forma individual. En la segunda sección se sugiere y analiza un procedimiento má…
Laboratory experiment was conducted to study the effect of modified atmospheric packaging on chilling injury and shelf-life of custard apple fruits at the division of Postharvest Technology, Indian Institute of Horticultural Research (IIHR), Hessaraghatta, Bengaluru, during September-October, 2009. The experiment was…
An experimental and analytical study is carried out on GLARE laminates tensile behavior, In the test results, the double-linear load-displacement curve and wave deformation are found. By means of the user subroutine VUSDFLD of ABAQUS, one finite element model is developed in the study to simulate the tensile behavior…
The thickness change of a film is measured optically using self-interference of a single laser beam incident at the edge of the film. Theory suggests that when a half-plane phase shift is applied to a Gaussian laser beam, interference fringes appear in the near and far field, in which position varies with the amount o…
The diameters of the embedded cells are denominated as W1 and W2. The stress-strain curves of the two-phase composite are determined from the matricity model in the same iterative manner as it is done for the simple selfconsistent embedded cell model: In each increment the components for stress and strain are determin…
In order to compute the effective response of the ME composite we analyze a representative volume element (RVE) of the actual body, which has to be imagined as periodically embedded into a higher scale macroscopic continuum. The RVE is driven by boundary conditions, derived by exploring a scale transition between the…
Each location requires its own return algorithm.The choice of return algorithm is guess upon based on the concept of boundary planes mentioned in Clausen & Damkilde (2008). Each return algorithm seeks to solve the relevant equations based on a Newton-Raphson iteration scheme.
The initial-boundary value problem governing the illustrative example may be phrased as follows: Find 1 ∈ C4,2[0, L] × [0, τ0], satisfying the partial differential equation on (0,L) × (0,τ0), together with the boundary and initial conditions indicated in the full paper.
A fine-grained UHPC having cylinder compressive strength and modulus of elasticity of about 205 MPa and 49,000 MPa respectively, was used The reinforcing steel was of the type BSt 500 with yield and ultimate strengths of 550 MPa and 630 MPa respectively. Steel fibers (F1) having tensile strength of 2500 MPa and dimens…
The leaves of Zea mays Linn. contain abundant nitrogen source and exhibit an extremely high light-harvesting efficiency due to its hierarchical internal structures. In this study, Z. mays Linn. leaves are used as template to generate Au/N-TiO2 nanocomposites through soakage, calcination and Au-nanoparticle-loading pro…
Corrosion of ageing pipelines is found to be a significant problem both onshore and within the subsea area. In order to determine the remaining time in service for such pipelines, it is required that deterministic capacity models are established as well as associated probability models for the key parameters. Having o…
As a novel nanomaterial, carbon nanotubes (CNTs) have been extensively applied in many fields such as material, catalysis, adsorption and separation, etc. The applications of CNTs in separation science, such as in solid phase extraction (SPE), solid phase microextraction (SPME) and membrane extraction, and as stationa…
Dissimilar metal butter-welded joints are commonly used by the oil and gas industries as they allow a welded connection between high strength hardenable carbon forged steel or non-hardenable pipe line steel to Nickel alloy components. A series of catastrophic failures of AISI 8630 steel/IN625 Nickel alloy dissimilar-m…
The properties of three cobalt based hardfacing deposits containing 0·37, 0·56 and 0·82 wt-% of carbon were studied. The results showed that hardness is enhanced with the increase in carbon contents in the case of as deposited condition and tempering treatment. The increasing rate in hardness increases with the increa…
Solution-processed deposition of carbon nanotubes (CNTs) provides a cost-effective means to synthesize uniform vertically or horizontally aligned nanostructures on top of substrates. The efficacy of deposition depends on the solubility of CNTs in the solvent as well as the ordering of nanotubes relative to the substra…
In order to improve the corrosion resistance of the TiB2/Fe composite coatings, high carbon ferrochromium powder was added to the precursor powders. This study evaluates the effect of high carbon ferrochrome added to the composite coating processed by shielded metal arc welding process. The phase composition and micro…