Materials Literature
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The possibility of using ammonia as a hydrogen carrier is discussed. Compared to other hydrogen storage materials, ammonia has the advantages of a high hydrogen density, a well-developed technology for synthesis and distribution, and easy catalytic decomposition. Compared to hydrocarbons and alcohols, it has the advan…
A concentrated fish soup could be gelled in the winter and re-solled upon heating. In contrast, some synthetic copolymers exhibit an inverse sol-gel transition with spontaneous physical gelation upon heating instead of cooling. If the transition in water takes place below the body temperature and the chemicals are bio…
This tutorial review focuses on the recent development of rhodamine derivatives, in which the spirolactam (non-fluorescent) to ring-opened amide (fluorescent) process was utilized.
The introduction of synthetic zeolites has led to a paradigm shift in catalysis, separations, and adsorption processes, due to their unique properties such as crystallinity, high-surface area, acidity, ion-exchange capacity, and shape-selective character. However, the sole presence of micropores in these materials oft…
Genome sequencing projects have resulted in a rapid increase in the number of known protein sequences. In contrast, only about one-hundredth of these sequences have been characterized using experimental structure determination methods. Computational protein structure modeling techniques have the potential to bridge th…
This critical review is intended to attract the interest of organic chemists and researchers on green and sustainable chemistry on the catalytic activity of supported gold nanoparticles in organic transformations. In the general part of this critical review, emphasis is given to the different procedures to form suppor…
Graphitic carbon nitride, g-C3N4, can be made by polymerization of cyanamide, dicyandiamide or melamine. Depending on reaction conditions, different materials with different degrees of condensation, properties and reactivities are obtained. The firstly formed polymeric C3N4 structure, melon, with pendant amino groups,…
A new set of covalent atomic radii has been deduced from crystallographic data for most of the elements with atomic numbers up to 96. The proposed radii show a well behaved periodic dependence that allows us to interpolate a few radii for elements for which structural data is lacking, notably the noble gases. The prop…
This paper presents a new artificial neural network approach based on loss separation model to compute power loss on different types of electrical steels. The network was trained by a Levenberg-Marquardt algorithm. The results obtained by using the proposed model were compared with a commonly used conventional model.…
Partial isothermal sections of the Al-Pd-Ru phase diagram at 1000 and 1100C are presented. The Al-Pd orthorhombic -phases dissolve up to ~15.5 at.% Ru, Al 13 Ru 4 <2.5 at.% Pd and Al 2 Ru up to 1 at.% Pd. Between 65 and 80 at.% of Al ternary quasiperiodic icosahedral phase and four cubic phases were revealed. An addit…
Advanced 700 ℃ class steam turbines require using Ni-based superalloys instead of conventional ferritic 12Cr steel which is insufficient in creep strength and oxidation resistance above 650 ℃. The superalloys, however, possess quite higher coefficient of thermal expansion (CTE) than the 12Cr steel. So far authors exam…
Present electrical devices have large calorific power, then improvement of heat dissipation has been a very important subject. We developed the novel epoxy resins which increased the thermal conductivity that has been a barrier to heat dissipation. The medium of thermal conduction for insulating resins is phonons. Pho…
The lecture will outline the selection of a cable system, from conductor, dielectric and protection system through to installation method and choice of accessories, identifying factors that will influence each choice. It will then indicate modern trends in on-line monitoring of cable systems for performance and integr…
Development of adhesive as well as anti-adhesive surfaces is necessary in various biomaterial applications. Cell behaviour on adhesive substrata is well documented, whereas very little is known abo...
This paper investigates the performance of conventional current transformer for online partial discharge detection in high voltage cables. It is based on the frequency response of such current transformers. The frequency behaviour was investigated using a simulation package (Powersim) by varying parameters including c…
This paper describes a novel method of nanowire assembly using a superhydrophobic surface as a template. Well-defined superhydrophobic structures on a template surface direct the site-specific self-assembly of nanowires due to interfacial tension in evaporation, enabling simple but highly-efficient and ordered assembl…
In this study molecular dynamic (MD) simulations are performed to study the interfacial thermal resistance between a nanofin and a working fluid. A (5, 5) carbon nanotube (CNT) of diameter 6.78 Å and various lengths are immersed in different fluids in these analyses. For this simulation the total numbers of the fluid…
Different multi-level [G2, G3, G2M(CC5)] and DFT-based (B3LYP, MPW1B95, and MPWB1K) techniques were tested for the calculations of the gas-phase formation enthalpy of nitrometanes as well as C-N bond dissociation energies of these species. The calculated values of the formation and reaction enthalpies were compared wi…
Modification of polymer surfaces by cold plasma processes is attracting a growing interest. Especially, the use of plasma gases such as N2, O2 or air, which are cheap and environmentally safe, is very attractive from an industrial point of view. The lifetime of atomic oxygen being very short, it is very difficult to o…
The elastic continuum model is resorted to study the lattice specific heat of individual crystalline silicon nanowires with 22 and 37 nm in diameter. Incorporating both longitudinal and transverse modes, a model based on the power-law phonon dispersion is developed to illustrate the characteristics of phonon density o…