Materials Literature
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The intensification of fast exothermic reactions can be achieved by using microstructured reactors (MSR) which provide improved mass & heat transfer rates leading to higher overall reaction kinetics. But for highly exothermic reactions the heat evacuation becomes not efficient enough and unwanted hot spots are formed.…
\n\t\t\t\t\tThe effects of strain rate on compressive and tensile strength of fly ash based geopolymer concrete were investigated experimentally. Four mixes of geopolymer concrete using different alkaline solutions and under vary curing conditions were prepared. One mix of ordinary Portland cement (OPC) concrete was p…
1 Dipartimento di Scienze dell’Ambiente e del Territorio, Universita degli Studi di Milano Bicocca, Milano, 20126 2 Dipartimento di Chimica Inorganica Metallorganica e analitica, Universita degli Studi di Milano, Milano, 20133 3 Dipartimento di Fisica, Universita degli Studi di Milano, Milano, 20133 4 INFN Genova e Di…
It is hard to deny that LED dresses look cool, but designing with LEDs might seem a bit limited because if LEDs are placed too far from the microcontroller, construction often becomes more complex. Even with highly conductive thread, the length of the thread becomes an issue if you use threads that are too long becaus…
In this work we examine the performance of particle-based models with respect to the Ni-YSZ composite anode system. The conductivity and triple-phase boundary (tpb) of particle-based systems is estimated. The systems considered have mono-dispersed particle size distributions, bi-modal particle size distributions with…
In article various ways of the description of a microrelief of the processed surface are considered. Merits and demerits for visualization of the processed rough blanket are considered
A numerical model of a paper sheet was created using a Level-Set method to analyse a vacuum dewatering process. A 2D representation of the paper model was created in Matlab with randomly positioned circular fibres and identical orientation in one dimension. The model considers the influence of the forming fabric which…
Bu çalışmada endüstride yatak çeliği olarak kullanılan 21NiCrMo2 çeliği ağırlıkça %100 B2O3, %70 B2O3 +%30 SiC, %70 B2O3 +% 30 B4C, % 30 B2O3 + %70 SiC, %30 B2O3 + %70 B4C pasta karışımları kullanılarakplazma pasta borlanmıştır. Plazma pasta borlama (PPB) işlemi, 700, 750 ve 800 °C de 2, 5 ve 7 saat süresince%70H2 – %…
The forecast and assessment of a thermal condition of the person in protective clothes in difficult conditions of the environment is carried out by means of mathematical modeling. In this time various approaches of geometrical representation of the system «Person — Clothes — Environment» are used. In this article the…
The article is devoted to the disturbed region of the bar during the action of constant longitudinal load. The dynamics of the construction is described by new specified univariate dynamical equations of longitudinal strain. These equations are derived from asymptotic-group analysis of three-dimensional dynamical equa…
The paper reviews modern centrifugal pumps used in housing and communal services. It gives the opportunity of their classification. New methods of their recovery are studied and new technologies with polymeric compound materials.
GaN-based power devices are under intensive investigations to replace their silicon counterparts for low switching loss. Currently, the development of normally-off GaN field-effect transistors (FETs) is the mainstream of this research area. In this study, we successfully demonstrate normally-off, low on-resistance and…
Resumen del trabajo presentado al Korean Nano Optical Society - Winter Workshop celebrado en Muju-gun (Corea del Sur) del 22 al 24 de febrero de 2012.
This thesis explores how the carrier dynamics within semiconductor nanocrystals can be directly engineered through specific core-shell design. Emphasis is placed on how material characteristics, such as strain or alloying at a core-shell interface, can influence the exciton energies and the recombination dynamics with…
Com a globalizacao dos mercados a concorrencia tornou-se mais acirrada, exigindo das empresas um desempenho de classe mundial, o qual deve ser dedicado a atender o cliente. Em decorrencia, as grandes companhias tiveram que adequar sua qualidade a altura dos novos e exigentes padroes mundiais. A producao nao pode parar…
In the Romanian village the artisanal crafts were always a cultural-artistic and economic activity, which material and spiritual filled in the rural community. The existence of textile raw materials and some of other sources in the sericultural (family) microfarm requires only a correct stimulation of the crafts in th…
Methods of combining surface-plasto deformation pieces from titanium alIoy ВТ9. Research of quality of surface layer is fulfilled. Functional dependence is determined between hardiness limit, fine crystalline structure parameters and intensity of exoelectronic emission.
Colloid self-assembly under external control is a new route to fabrication of advanced materials with novel microstructures and appealing functionalities. The kinetic processes of colloidal self-assembly have attracted great interests also because they are similar to many atomic level kinetic processes of materials. I…
Compared with As 20 S 80 , P 2 As 20 S 78 film waveguide deteriorates the response behavior of recovery propagation and mainly performs the slow later stage in recovery propagation process. However, for Sn 1 As 20 S 79 , it can improve evidently the fast earlier stage in the recovery propagation process to shorten res…
Throughout the previous century, hydrocarbon-fueled engines have used and optimized the `traditional' combustion process called deflagration (subsonic combustion). An alternative form of combustion, detonation (supersonic combustion), can increase the thermal efficiency of the process by anywhere from 20 - 50%. Even t…