Mineralogy and Surface Properties
This chapter contains sections titled: Introduction Group Discussions Analytical Considerations Global Applications of Particulate Studies (GAPS): Shortcomings, Concerns, and New Vistas
Materials Literature
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A New Behavior of Carbon Under Shock Compression; Rapid-Quenching of Two New Crystalline Carbon Forms
A rapid-cooling technique was developed for shock compression experiments. With this technique, two modified crystalline carbon forms were successfully quenched from shock compression of graphite sheets to 65 GPa and 3700 K. One of them, «-diamond, recovered from the rapidly cooled part, was established as a new cryst…
Structural aspects of Lentiviral Integrase–LEDGF Interaction
This chapter contains sections titled: Introduction Integrase Binding Domain (IBD) of LEDGF Primary IN–LEDGF Interface Role of Lentiviral IN N-Terminal Domain in High-Affinity Interaction with LEDGF Conclusions References
Partecipazione ad iniziative europee ed internazionali in merito allo smaltimento definitivo dei rifiuti radioattivi ad alta attività e lunga vita
Sebbene lo smaltimento definitivo dei rifiuti radioattivi ad alta attività e a lunga vita non rientrasse inizialmente nell'oggetto della presente linea progettuale, fin dalla prima annualità si ritenne utile riassumere anche le attività svolte dall'ENEA in tale ambito. Successivamente, anche in base ad un input specif…
Controlled-Error Approximations for Surface Diffusion of Interacting\n Particles with Applications to Pattern Formation
Microscopic processes on surfaces such as adsorption, desorption, diffusion\nand reaction of interacting particles can be simulated using kinetic Monte\nCarlo (kMC) algorithms. Even though kMC methods are accurate, they are\ncomputationally expensive for large-scale systems. Hence approximation\nalgorithms are necessa…
Radiation Conditions Modelling at the Geostationary Orbit
This chapter contains sections titled: Introduction Misunderstandings between Model Makers What is Needed for Users: A Single Model or a Set of Models? Input Indices Correlation of Electron Fluxes at Geostationary Orbit with Solar Wind Characteristics Conclusions
Cálculo do equilíbrio sólido-líquido e ajuste de parâmetros para modelos temodinâmicos em misturas binárias e ternárias de ácidos graxos, seus ésteres e triacilgliceróis
O trabalho desenvolvido e de carater teorico e computacional e tem como objetivo o estudo e aplicacao de tecnicas de otimizacao juntamente com analise de convexidade para calculo do equilibrio solido-liquido, utilizando um problema de Programacao Nao-linear, implementado no software GAMS em conjunto com o software Mic…
There is no pointwise consistent quasicontinuum energy
Much work has gone into the construction of quasicontinuum energies that reduce the coupling error along the interface between atomistic and continuum regions. The largest consistency errors are typically pointwise $O(\frac{1}{\eps})$ errors, and in some cases this has been reduced to pointwise O(1) errors. In this pa…
Competing superconducting, magnetic and charge orderings in the AF Heisenberg-Kondo lattice with Dirac electrons
Many recently discovered advanced materials, such as high-Tc cuprates, iron pnictides and several heavy-fermions, exhibit a rich phase diagram suggesting the presence of different competing interactions that would lead to various types of ordering. Nevertheless, there is not yet a clear unifying picture allowing the u…
Nanoscale studies of materials using x-ray synchrotron radiation and mesoscopic modelling
X-ray synchrotron radiation was used to study the nanostructure of cellulose in Norway spruce stem wood and powders of cobalt nanoparticles in cellulose support. Furthermore, the growth of metallic clusters was modelled and simulated in the mesoscopic size scale. Norway spruce was characterized with x-ray microanalysi…
Space Charge Spectroscopy applied to Defect Studies in Ion-Implanted Zinc Oxide Thin Films
Die vorliegende Arbeit befasst sich mit der Erzeugung und Detektion von Defekten im Halbleiter Zinkoxyd (ZnO). Der Fokus liegt dabei auf der Verwendung raumladungszonenspektroskopischer Techniken zur Detektion und Charakterisierung elektronischer Defektzustände. Es werden theoretische Aspekte von Raumladungszonen an H…
Baddeleyite-Type High-Pressure Phase of TIO2and its StableP-TRegion
In-situ X-ray diffraction experiment has been carried out for powdered rutile under high pressure and temperature generated with sintered diamond multianvils. New diffraction lines of the high pressure phase began to appear at ∼12 GPa at room temperature, and the single phase was formed by heating at 770°C under 20.3…
Extrusion Technology for Manufacturing Polymer Blends
Extrusion technology for manufacturing polymer blends is commonly referred as polymer or plastics compounding. Mixtures of polymer(s), additives, fillers, and other ingredients are put through several elementary steps to produce the molten polymer blends that are being pelletized in normal operations. The use of singl…
Manufacturing of Polymer Blends Using Polymeric and Low Molecular Weight Reactive Compatibilizers
The application areas of the various polymeric material blends systems are limitless and blending of the polymers has also been recognized as a faster and less expensive method of developing a new material than synthesizing a new polymer with a new chemical structure. This chapter discusses reactive blending and compa…
Chemical and Engineering Aspects of Morphology Development and Processing of Multiphase Polymer Blend Nanocomposites
Polymer mixing and blending has been one of the major research fields of polymer engineering and science. The growing economic importance of polymers and their blends in the post-World War II era served as the major impetus for industrial and academic research efforts although the origin of polymer blending dates back…
A Theory of the Specific Heat and Viscosity of Liquid SiO2and BeF2
A theory of the transport and thermal properties of the network fluids SiO2 and BeF2 is presented. The theory is based on molecular dynamics simulations of BeF2. It is observed in such simulations that a “diffusion event,” requiring the separation of a Be-F neighbors, occurs only when the F ion is 3-fold coordinated,…
The SPAS: Selected Particle Analysis System
This chapter contains sections titled: Introduction Outline of the SPAS Materials and Instrumentation Description of Techniques Applications Conclusions
Analytical and Experimental Investigations of Ships Impact Interaction with One-Sided Barrier.
This study deals with impact interaction of ships with one-sided ice barrier during roll dynamics. An analytical model of ship roll motion interacting with ice is developed based on Zhuravlev and Ivanov non-smooth coordinate transformations. These transformations have the advantage of converting the vibro-impact oscil…
Axisymmetric Double-Diffusive Convection in a Cylindrical Container: Linear Stability Analysis with Applications to Molten CaO-Al2O3-SiO2
This chapter contains sections titled: Introduction Multicomponent Diffusion and Linear Transformation Double-Diffusive Convection in a Cylindrical Container Application to Molten Cao-Al2O3-Sio2 Summary and Discussion
Modeling of Core Losses in Electrical Machine Laminations Exposed to High Frequency and Non-sinusoidal Flux
Electrical machines account for about 60% of the electricity consumption in industrial countries; hence a huge energy savings could be achieved by even a small increment in the machine efficiency. Improving the designs of electrical machines requires accurate quantification of the machine losses. A significant portion…