Materials Literature
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Telah dilakukan preparasi dan karakterisasi katalis NixFe2-xO4 melalui metode sol-gel untuk reaksi konversi selulosa. Preparasi katalis dilakukan melalui langkah-langkah pencampuran, penguapan, dan kalsinasi. Selanjutnya dilakukan karakterisasi terhadap katalis yang telah terbentuk. Proses karakterisasi katalis melipu…
For several years, Severe Plastic Deformation (SPD) processes have been developed to refine the microstructure of metals in order to obtain ultrafine grains (UFG). This refinement attributes improved properties (ex: yield stress) to the material. The overall geometry of the material remains unchanged. That is why thes…
Les composés à base de lanthanides luminescents possèdent des propriétés uniques offrant de nombreux avantages pour l étude de problèmes biologiques et pour le diagnostic. Ils résistent notamment à la photodécomposition, possèdent des temps de vie de luminescence longs ainsi que des bandes d émissions étroites qui ne…
Atomistic-to-Continuum (AtC) coupling methods are a novel means of computing\nthe properties of a discrete crystal structure, such as those containing\ndefects, that combine the accuracy of an atomistic (fully discrete) model with\nthe efficiency of a continuum model. In this note we extend the\noptimization-based AtC…
We study the structure of the stable coefficients of the Jones polynomial of an alternating link. We start by identifying the first four stable coefficients with polynomial invariants of a (reduced) Tait graph of the link projection. This leads us to introduce a free polynomial algebra of invariants of graphs whose el…
Dopamine (DA) is an important neurotransmitter in the central nervous system. It conveys cognitive, behavioral and motor functions, and it is involved in several neurological disorders, such as schizophrenia and Parkinson’s disease that affect millions of people worldwide. Although DA is implicated in so many function…
Electrochemical impedance spectra for battery electrodes are usually interpreted using models that assume isotropic active particles, having uniform current density and symmetric diffusivities. While this can be reasonable for amorphous or polycrystalline materials with randomly oriented grains, modern electrode mater…
Lower olefins (ethylene, propylene and butylenes) are important commodity chemicals used for the manufacture of, amongst others, plastics, solvents and lubricants to cosmetics and drugs. C2 to C4 olefins are conventionally produced by steam cracking of naphtha. In view of economic, strategic, and environmental reasons…
X-ray crystallography has been used to work out the atomic structure of a large number of proteins. In a typical X-ray crystallography experiment, a beam of X-rays is directed at a protein crystal, which scatters some of the X-ray photons to produce a diffraction pattern. The crystal is then rotated through a small an…
A pivotal ongoing debate about cuprate superconductors (HTS) is the location of the transition temperatures for the superconducting wave function phase coherence and condensation, Tphase and Tcond. This shall elucidate which of two very different interactions dictate the macroscopic superconducting phase diagram of HT…
Removed at authors request
The simultaneous effect of crack length and crack front shape on plasticity-induced crack closure (PICC) for a 304L austenitic stainless steel is simulated through 3D numerical modelling using finite element software Abaqus for through-thickness cracks with different curved crack fronts in CT specimens in comparison w…
Force sensors, based on the giant inverse magnetostrictive effect, have a series of outstanding properties, such as large overload capacity, which make them have more and more applications to the field of automatic control system of heavy industry, chemical industry. This paper designs new giant magnetostrictive force…
A novel microscale combustor-heat exchanger (μCHX) for hydrogen storage applications is presented. The design of the μCHX is motivated by its application to two particular systems for automotive usethose that utilize metal hydrides (MH) and cryo-adsorbents (CA) to store hydrogen. In these systems, thermal energy needs…
Already established as a powerful nitrating, nitrosating and oxidative agent, peroxynitrite (product of nitric oxide reacting with superoxide radical, ONOO−; PON for short) was clinically ascertained as a potent cell‐death inducer in several devastating diseases. Herein, this clinical evidence is sketched purposely, t…
In this study, two types of accelerated tests were conducted to determine the corrosion rate of a reinforcing bar in concrete. Tensile test specimens were used for these accelerated tests. In one test, the chloride content of the concrete in the specimens was varied at three levels. The corrosion rate of the reinforci…
Self-assembled monolayers (SAMs) formed with thiols on surfaces represent the most representative system of such kind. Their detailed adsorption orientation and kinetics are however rarely elucidated completely, making the development of the SAM systems mostly based on try-and-error approach. We have studied the adsor…
We show how the pore size and relative humidity are two competitive confinement factors that control the multi-scale water transport in disordered materials. These factors are characterized by proton NMR spectroscopy, relaxometry and diffusometry as well as conductivity and X-ray micro-tomography. We first use MCM41,…
شناخت شکلهای مختلف فسفر در خاک برای ارزیابی وضعیت فسفر و نیز حاصلخیزی خاک و تغذیة گیاه اطلاعات مفیدی در اختیار میگذارد. برای اطلاع از چگونگی توزیع شکلهایمعدنی و آلی فسفر تعیین همبستگی بین این شکلها با ویژگیهای فیزیکی و شیمیایی خاک و ایجاد معادلههایی برای پیشبینی شکلهای فسفر با بهرهگیری از ویژگیهای خاک در خ…
This paper presents the design of a light and robust temporary emergency shelter with a triangulated polyhedral grid to transfer the lateral and vertical loads efficiently. To simplify the construction the variety of the elements is minimized, only two sizes of elements are applied. For the structural grid alternative…