Materials Literature
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Military operations performed by UN and NATO forces within the framework of stabilization missions revealed the weak points of the equipment utilized by these organizations.It turned out that one of the most dangerous threats is posed by partisan missiles equipped with cumulative heads.These missiles are mostly based…
In the last decades passive gamma-ray spectrometry became more interesting as proxy for mapping of soil parameters. For usage of gamma-ray data in Digital Soil Mapping a translation by geophysical transfer-functions into soil parameters is needed. A prerequisite to develop such functions is a reliable comparison betwe…
We take a wide-angle view of the problem of monolayer graphene (MLG) where spin-degeneracy lifting is assumed to be possible by wedging in the tunable Rashba spin-orbit coupling(RSOC) and the sub-lattice staggered potential. We next consider the AB-stacked bi-layer graphene (BLG) system (the A-carbon of the upper shee…
Background and Aims: The present study has designed to explore synthesis method of poly(methyl vinyl ether–alt-maleic acid)(MVEM)/Pluronic F127(F127) copolymer for drug delivery. Pluronic F127 has been studied extensively as drug delivery vehicle due to its excellent biocompatibility and pronounced micellization behav…
The structural and electronic properties of BN x As 1-x alloys have been investigated in the total range of nitrogen by the FP-LAPW method based on DFT within the EV-PW-GGA scheme. The equilibrium lattice constants, bulk moduli, first-order pressure derivatives of the bulk moduli, and cohesive energies have been obtai…
Recent progress in approaches to determine the elastic constants of solids starting from the microscopic particle interactions is reviewed. On the theoretical side, density functional theory approaches are discussed and compared to more classical ones using the actual pair potentials. On the experimental side, video m…
Many researchers have studied aggregation of microgel particles; however, the majority of these studies have been limited to single-component system in which homoaggregation is observed. On the other hand, less attention has been given to multi-component systems whereby heteroaggregation is seen. As such, heteroaggreg…
Il presente rapporto espone una metodologia per il calcolo degli inventari di combustibile per i reattori LWR al variare del burnup. Vengono presentati i principali fenomeni fisici connessi al bruciamento ed al decadimento in nocciolo del combustibile nucleare, i parametri fisici da cui dipende la composizione isotopi…
In questo rapporto viene studiato un assembly per PWR 17x17 privo di barre di controllo ricorrendo al codice deterministico APOLL02 versione 2.8-3.E, il cui utilizzo è reso possibile grazie ad un accordo STC siglato tra ENEA e CEA nel 2011. Viene dapprima studiata una singola pin, al variare della discretizzazione rad…
In questo rapporto viene presentato in dettaglio il nocciolo di un PWR da 900 MWe della classe francese CP1, con particolare riferimento alla configurazione del primo ciclo, o ciclo di avviamento. Per tale configurazione viene descritta la metodologia di calcolo per librerie di sezioni d'urto equivalenti a 2 gruppi e…
\n Embora o Brasil ocupe a primeira posição no ranking mundial de produção de lima ácida Tahiti, somente 6,6% desta produção é exportada. Tal aspecto deve-se, parcialmente, às perdas provocadas por danos pós-colheita, as quais estão distribuídas ao longo da cadeia de comercialização da fruta, desde a colheita até o co…
Due to electric explosion of a copper conductor in a dielectric the research carried out allowed obtaining a composite with a regulated structuring at φ≥0,06vI%Cu and with directed changes in electrophysical properties.
Ampliao do uso da tcnica de espectrometria de absoro atmica utilizando tubo metlico na chama para determinao de prata A tcnica espectrometria de absoro atmica utilizando tubo metlico na chama e spray trmico (TS-FF-AAS, do ingls, thermospray flame furnace atomic absorption spectrometry) consiste no uso de um tubo metli…
Abstract. This paper extends the analysis concerning the importance in numerical models of unsteady friction and viscoelasticity to transients in plastic pipes with an external flow due to a leak. In fact recently such a benchmarking analysis has been executed for the cases of a constant diameter pipe (Duan et al., 20…
Techniques for mass-production of large area graphene using an industrial scale thin film deposition tool could be the key to the practical realization of a wide range of technological applications of this material. Here, we demonstrate the growth of large area polycrystalline graphene from sputtered films (a carbon-c…
We show that exact loss compensation can be achieved in active metamaterials containing spasers pumped over a wide range of pumping values both below and above the spasing threshold. We demonstrate that the difference between spaser operation below and above spasing threshold vanishes, when the spaser is synchronized…
A graph on the sphere naturally gives a combinatorial tiling. We study the tilings such that all tiles has five edges (i.e., pentagons). We prove that the tiling has at least two vertices of degree > 3, and any vertex of degree > 3 must have another vertex of degree > 3 within distance 5. Moreover, we classify all til…
We show that by introducing isoelectronic iron (Fe) magnetic impurities and Beryllium (Be) double-donor atoms into InAs, it is possible to grow a n-type ferromagnetic semiconductor (FMS) with the ability to control ferromagnetism by both Fe and independent carrier doping by low-temperature molecular-beam epitaxy. We d…
We present the case of a patient suffering from Neurofibromatosis type I (NF-1) with acute, very painful neuropathy of the right lower extremity. The preoperative electro neuro- physiological study showed an impaired function of the peroneal nerve. The MRI revealed an extended diffuse plexiform tumour of the sciatic n…
We propose new structures for decreasing reflection at output ends of photonic-crystal optical waveguides. These are waveguides gradually radiating guided waves. We analyzed 2-D models numerically by the finite difference time domain method. A large decrease in reflection is shown.