Materials Literature
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Fire disaster is the major factor to endanger the public and environmental safety. People lost their life during fire disaster mainly be attributed to the dense smoke and toxic gas under combustion, which hinder the escape of people and the rescue of firefighters under fire disaster. The smoke suppression effect of se…
Abstract Possible use of ultra‐fine acrylonitrile butadiene rubber powder (UFNBRP) as a filler for natural rubber (NR) was investigated. The UFNBRP was added into NR at various concentrations, and the compound properties were determined. It is found that, with increasing UFNBRP loading, the compound viscosity is incre…
The delivery of immunomodulatory genes into the cornea prior to transplantation is one promising strategy to improve graft survival rates. We recently reported a class of novel triblock oligopeptides that could mediate efficient gene transfer into corneal endothelial cells. Now these peptides are characterised further…
The most important factor for quantitative results in molecular dynamics simulation are well developed force fields and models. In the present work, the development of new models and the usage of force fields from the literature in large systems are presented. Both tasks lead to time consuming simulations that require…
Perspectives for study of thermophysical properties via uniform quasi-stationary volumetric heating under Heavy Ion Beam (HIB) heating with moderate but realistic energy deposition (~ 1 kJ/g) are under discussion. New quasi-isobaric regime of heating is proposed as combination of the HIB energy deposition with the use…
The Cornell Electron Storage Ring (CESR) has been reconfigured as a test accelerator (CesrTA) for a program of electron cloud (EC) research at ultra low emittance. The instrumentation in the ring has been upgraded with local diagnostics for measurement of cloud density and with improved beam diagnostics for the charac…
To facilitate studies of collisions between polarized electron and protons at {radical}s = 14 GeV; constructing an electron-nucleon collider at the FAIR facility has been proposed. This machine would collide the stored 15 GeV polarized proton beam in the HESR with a polarized 3.3 GeV electron beam circulating in an ad…
Les travaux de cette these ont pour objectif d’etudier la machine asynchrone a cage dans le contexte d’une conversion de l’energie eolienne dans des sites isoles. Apres un bref rappel des concepts de la conversion de l’energie eolienne en energie electrique, ce document dresse un etat de l'art des differents solutions…
We report measurements of the phonon density of states as measured with inelastic x-ray scattering in SmFeAsO{sub 1-x}F{sub y} powders. An unexpected strong renormalization of phonon branches around 23 meV is observed as fluorine is substituted for oxygen. Phonon dispersion measurements on SmFeAsO{sub 1-x}F{sub y} sin…
The discipline of Mass Properties Engineering tends to find the engineers; not typically vice versa. In this case, two engineers quickly found their new responsibilities deep in many aspects of mass properties engineering and required to meet technical challenges in a fast paced environment. As part of NASA's Constell…
ABSTRACT: In designing a porous concrete, containing a high volume of air pores, the effects of its meso-scale phases on its macro level properties have to be known. For this purpose, porous concretes having differ-ent aggregate gradings and cement paste compositions were investigated through macro-scale strength test…
Abstract To characterize phase transformations, it is necessary to get both local and global information. No experimental technique alone is capable of providing these two types of information. Local techniques are very useful to get information on morphology and chemistry but fail to deal with global information like…
Cupins are ubiquitous proteins existing in all three kingdoms of life and share a conserved β-barrel fold with a characteristic pocket located at the center of the β-barrel.1, 2 Despite sharing the highly conserved topology, cupins show remarkable variations in their sequences, architecture of domains (comprising eith…
In the present work, we report the applicability of the further Meyer–Neldel rule in thin films of glassy Se 100− x Sb x alloys for thermally activated high field conduction using two different methods. In first case, the temperature dependence of dc conductivity is studied at different electric fields without changin…
The frequency dependence of the phase field model(PFM) is studied. A simple PFM is proposed, and is tested in a laminar boundary layer. The Blasius-s laminar boundary layer solution on a flat plate is used for the flow pattern, and several frequencies are imposed on the PFM, and the decay times of the interfaces are o…
Silicon carbide nanowires (SiCNWs) have been successfully produced by a conventional synthesis method with silicon powder on agricultural‐waste‐activated carbon templates. Specific surface area (SSA) values of ∼900 m 2 /g were achieved through the conventional activation of Crambe stalk with potassium hydroxide (KOH).…
Wood fibres can be a low cost reinforcement for cementitious materials for structural applications. In order to design a ductile cementitious material reinforced with softwood fibres the fibrematrix interface properties are studied. Pullout tests have been carried out to determine the bond strength and the influence i…
A Rietveld study for three ceramic pigments is presented. Two commercial black ceramic pigments, belonging to the (Cr x Fe 1− x ) 2 O 3 family, are shown to be single crystalline phase with a negligible amorphous phase content. This conclusion is drawn from the existence of a unique crystalline phase and from the anal…
Yb‐, Y‐, Yb/Y‐, and Yb/Nd‐doped α‐SiAlON ceramics with 5 wt% barium aluminosilicate (BAS) were synthesized by hot pressing. Typical self‐reinforced microstructures were obtained in all investigated α‐SiAlONs in spite of the type of doped cations. This is attributed to the incorporation of BAS, which could supply suita…
Drawing of glass fibers is an important industrial process used for the manufacture of a variety of materials ranging from optical communications cables to fiber filter media. A variety of machines exist for performing the drawing function, but all share similar problems with control of the fiber diameter and breakage…