Materials Literature
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This paper presents the process of selecting a semi-empirical fuel cell (FC) model for use in a realtime virtual PEM fuel cell system. A selection of FC models are reviewed using a list of key features and considering the final application of the model within a virtual fuel cell system (VFCS). As the model is intended…
Abstract We describe the use of solid‐state NMR spectroscopy for studies of order and disorder in solids. A short overview of different aspects of order and disorder in solid materials is given, addressing the differences between static and dynamic disorders. A brief introduction to the basics of broad‐line, high‐reso…
The objective of this chapter is to demonstrate a closed form solution to a unique problem in heat transfer, that of heat transfer in nonlinear media. For this purpose identified are cases in which the nonlinear phenomenon dominates, where properties of a medium exhibit nonlinear response to heating, and the solution…
Abstract Analysis of multiscale nanocomposite materials continues to evolve with new developments in several fronts. Most of the recent advances include theoretical developments in improving the accuracy and efficiency of multiple physics‐based mathematical and computational models, and also generation of new defect‐f…
Use of NMR pulse sequences to measure diffusion permits to study the dynamic exchange of PEO as a small molecule that diffuses through hollow PMMA nanocapsules walls in order to control its release according to the environment. These nanostructured objects being composed of stereocomplex between isotactic and syndiota…
After the invention of induction plasma torch by [Reed, 1961], tremendous achievements have been earned by the researchers in the field of thermal treatment of micro particles by induction plasma torch. Induction thermal plasma (ITP) has become very popular in material processing due to several of its inherent charact…
This thesis describes the preparation of CNF layers on flat and porous substrates and their application as catalyst supports for chemical and electrochemical gas‐liquidsolid (G‐L‐S) catalytic reactions. Metal nanoparticles growing CNFs on flat metal substrates at 600°C are easily formed from NiO, in contrast to Fe and…
Having started out from a traditional CW-wideline NMR background and brief forays into Mossbauer spectroscopy and biological liquid-state NMR during postdoctoral years, Professor Eckert's current research agenda focuses on the development and application of modern solid-state NMR methodology to disordered materials. A…
Abstract This article is a review of what was done in our laboratory by several PhD students (Lu Chuming, K. Legorju, and S. Dong) in order to have a better understanding and prediction of the mechanical behavior and of the damage of elastomeric matrix used for rubber composites. Both monotonic and cyclic loadings are…
Thermodynamics is a powerful theory that has been succesfully applied to describe the properties and behavior of macroscopic systems under a very wide range of physical conditions (Callen, 1985). Thermal and caloric information is obtained by performing experiments that agree with the constraints imposed (Callen, 1985…
Abstract An update on the most relevant issues on adhesion in composites is reviewed. Two aspects are considered: adhesion between the matrix and the reinforcing phase in composites and adhesion between composites to be joined to themselves or to other materials. Polymer‐, ceramic‐, metal‐, glass‐, and glass‐ceramic‐m…
The two-dimensional problem of wave scattering on a multilayered grating consisting of dielectric infinite cylindrical bodies with arbitrary cross-section is considered. The system of integral equations to which the initial problem is reduced is derived. The efficient algorithm for calculation of periodic Green’s func…
Errors in the reading of a neutron scattering water content gage due to the chemical composition of the soil and to statistical fluctuations in the source emission rate are discussed. The effect of each cause of error may be minimized by correct design of the apparatus. The collision processes that may occur between n…
This paper proposes a hybrid control algorithm for a power quality conditioning device. This algorithm incorporates a Linear Quadratic Regulator (LQR) to a Robust Model Reference Adaptive Controller (RMRAC) in order to obtain a high performance and robust system of control for the specified plant. The RMRAC controller…
Sommario Il modulo KIN3D del sistema di calcolo francese ERANOS è stato sviluppato alla fine degli anni 90 per l'analisi di cinetica neutronica di sistemi critici e sottocritici. Per quanto riguarda le campagne sperimentali europee in supporto della tecnologia ADS l'attenzione è attualmente focalizzata sul programma s…
In this paper the noise characterization for a three-electrode electrochemical amperometric sensor is presented. The sensor is used for the determination of biochemical oxygen demand (BOD) in water and it is based on a ferricyanide-mediated approch. The micro and meso-electrodes were manufactured using microfabricatio…
In the alloy with solute content higher than the limiting solubility, the solute atoms failing to dissolve will precipitate from the solid solution and form precipitations. In this study, the Portevin-Le Chatelier (P-LC) effects in annealed 5456 and 5052 aluminum alloys with different precipitation content are investi…
以十六烷基三甲基溴化铵为模板剂、铝酸钠为铝源、硅酸钠为硅源、用水热合成法制备了不同硅铝比的Al-MCM-41分子筛，负载不同金属离子对其改性，并用X射线衍射仪（XRD）、N2气吸附等方法对其进行了表征。同时，考察了Al-MCM-41（80）负载不同金属离子作为吸附剂对模拟汽油的脱硫性能。结果表明，Al-MCM-41（80）在353K时的脱硫效果最好；负载金属离子Fe3＋、Ni2＋、Zn2＋、Cu2＋、Co2＋、Ce2＋的脱硫效果顺序为：Ni2＋〉Co2＋〉Zn2＋〉Fe3＋〉Ce3＋〉Cu2＋；芳烃的加入降低了分子筛对噻吩的选择性。
[EN] The invention relates to a method for obtaining material s, comprising the treatment of solids by means of \ninteraction with ferrofluids in order to provide the end product with superparamagnetic properties at moderate temperatures. These \nsuperparamagnetic materials are produced by assembling nanoparticles of…
• The ability of a metal to deform plastically depends on the ability of dislocations to move. • Hardness and strength are related to how easily a metal plastically deforms, so, by reducing dislocation movement, the mechanical strength can be improved. • To the contrary, if dislocation movement is easy (unhindered), t…