Materials Literature
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In this study a 1-dimensional computational model implementing conservation of mass, species and energy for both the gas phase and catalyst surface has been developed to predict the performance of an Fe-Zeolite selective catalytic reduction catalyst. This work investigates and analyzes the behavior of a fresh Fe-Zeoli…
The Department of Energy requires accurate measurements of special nuclear material quantities and isotopics to support material control and accountability upon creation of an item.Usually the initial non-destructive assay measurements meet all requirements.However, at times the measurements must be repeated (e.g., ve…
Starting with a model Hamiltonian for the system with equal spin singlet and triplet pairings based on quantum field theory and green function formalism, we obtain expressions for superconductivity and ferromagnetism parameters. The model exhibits a distinct possibility of the coexistence of superconductivity and ferr…
1 Phase Variac 50 Hz, 230 V/(0-270V) 10kVA, 0-230V/0-100kV Test Transformer 20 MVA, 140 KV PIV Diode Unit 10 MΩ Controllable sphere gap Test cell Automatic earth switch To DSO 280 MΩ C1 Cm R1 L1 L2 R2 C2
In this study we have fabricated shower kind of microplasma using diamond coated molybdenum (Mo) as a cathode (which contains the 1 mm holes) separated by copper anode at 1mm. Three kind of diamond films deposited in microwave plasma enhanced chemical vapor deposition process. Pulsed bipolar DC source has applied to a…
Extraordinary mechanical properties in biological composites come from their hierarchical structures and are well seen in bones, teeth, shells etc. Nature inspired knowledge could certainly help in the design of new nanostructured materials. The current study illustrates a multi-scale nanotube model for the purpose of…
This paper deals with the design of model-based soft measurement to improve the process monitoring and control in Chinese medicine sugar crystallization. A model dedicated to Chinese medicine sugar crystallization is designed, without consideration of crystal size distribution. The mass of crystals in the solution, th…
O uso do hidrogênio como combustível tem sido intensamente estudado como alternativa aos combustíveis fósseis, reduzindo assim a emissão de compostos poluentes na atmosfera. As células a combustível atendem a essa necessidade, no entanto perdem a eficiência devido ao envenenamento do seu ânodo pela presença de CO nas…
Two models of polarization forces generated inside a carbon nanotube by a moving point charge are considered. In the first model, carbon atoms are replaced by equivalent spherical dielectrics; in the second model, the carbon nanotube is replaced by a homogeneous hollow dielectric tube.
The paper describing the new phosphate mineral correianevesite, recently published by Chukanov et al. (2014), clearly demonstrates the importance of pegmatite phosphates. For material scientists, these minerals are a source of new structure types; for petrologists, they constitute valuable tools necessary to accuratel…
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Shape Memory Alloy actuators are commonly termed as smart materials because of its inherent ability to change shape with change in temperature. They have widespread applications in various fields. But due to its highly nonlinear operation, accurate control is difficult to achieve. In this brief, an adaptive neurofuzzy…
The II-type docks which consist of one or few pontoons and two towers and have the lifting from 300…400 tones to few tens of thousands are used for the repair of underwater hull and rudder-propeller complex, and as transporting structures, launching and transfer means during shipbuilding and ship repair on horizontal…
Rigorous modal solutions of silicon nanowires are presented by using a full vectorial finite element method. Single mode operation range of these guides and full-vectorial modal field and Poynting vector profiles for silicon based nanowires are presented. Results for novel vertical and horizontal slot waveguides are a…
A control algorithm for a Series Hybrid Active power Filter is proposed. The compensating signals are derived based on Dual instantaneous reactive power theory. A, DC link voltage reduction algorithm is incorporated in the model to reduce the switching stresses. The proposed scheme does not vary the compensation chara…
O presente artigo aborda um estudo de prospecção tecnológica do monitoramento de polihidroxialcanoato (PHA) na área farmacêutica, usando como fontes de informações bases de patentes. Para tanto, foram utilizados bancos de dados do Espacenet (EP). Os dados foram obtidos utilizando-se como palavras-chave “Polymer*”, “Po…
The application of the traditional magnetic materials in absorbing always have shortcomings of big quality and low efficiency at low frequency. On this regard, a new microwave absorber is proposed by combining the magnetic materials with the phase gradient metasurface. As an example, a composite absorber is designed b…
This paper presents a discussion of the effects of covalent radius value in producing new organic compounds, the value of covalent bond radius will be changed either by increasing or decreasing and hence a new organic compounds or new properties organic compounds will be created. It is found that the value of the cova…
This report satisfies the U.S. Department of Energy (DOE), National Nuclear Security Administration Nevada Field Office (NNSA/NFO) commitment to prepare a quarterly summary report of radioactive waste shipments to the Nevada National Security Site (NNSS) Radioactive Waste Management Complex (RWMC) at Area 5. There wer…
Negli ultimi anni vi e un interesse sempre crescente per il drogaggio di semiconduttori nanostrutturati. Questa tesi si inserisce in una linea di ricerca mirata a studiare sperimentalmente e modellizzare la diffusione ed incorporazione di P su Si-NCo di 4 nm di diametro immersi in una matrice di SiO2. La novita di que…