Materials Literature
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Shock sensitivity of heterogeneous explosive composites is dependent on the formation of hot-spots which are small regions of elevated temperatures within the material. Changes in the initial meso-structure (i.e. packing density, composition, particle size and shapes) of the explosives can significantly alter the hot-…
Graphene is a one atom thick sheet of carbon, joined together in a honeycomb structure. It is being considered as a way to overcome some of technological limitations of silicon in integrated circuit industry owing to its extraordinary electrical, mechanical and thermal properties. The most promising method to fabricat…
Liquid drops on soft solids generate strong deformations below the contact line, resulting from a balance of capillary and elastic forces. The movement of these drops may cause strong, potentially singular dissipation in the soft solid. Here we show that a drop on a soft substrate moves by surfing a ridge: the initial…
ADVERTISEMENT RETURN TO ISSUEPREVRetractionRetraction of "Development of Fe/Fe3O4 Core–Shell Nanocubes as a Promising Magnetic Resonance Imaging Contrast Agent"Waleed E. Mahmoud*, Lyudmila M. Bronstein*, Faten Al-Hazmi, Fowzia Al-Noaiser, and A. A. Al-GhamdiCite this: Langmuir 2014, 30, 25, 7622Publication Date (Web):…
The wetting motion over a rigid solid gives rise to a dynamic liquid contact angle. Here we show that a contact line moving on a soft, viscoelastic substrate also leads to a dynamic contact angle, but this time, in the solid: the initially flat solid surface is deformed elastically into a sharp ridge whose angle depen…
Sodium sulfates are well known to be the most damaging salts in building materials and rocks. The crystallization processes of sodium sulfates are not completely understood, and more specifically the transition between the heptahydrate (SS7, Na2SO4-7H2O) and the mirabilite (SS10, Na2SO4-10H2O). The metastable heptahyd…
Testing, calibration, and calibration frequency requirements for portable radiation detectors used to directly measure alpha, beta, photon, and neutron radiation are defined. Also defined are the calibration and testing requirements for alpha and beta-gamma measurements of surface contamination levels using portable r…
This chapter studies the gasification of a single char particle. Two models have been developed for tracking the reacting particle interface. The first is a detailed computational fluid dynamics (CFD) based model which tracks the porosity and the interface of a char particle moving in a gasifying atmosphere. Simulatio…
Les CMC oxyde/oxyde sont de bons candidats pour des applications thermostructurales. Le comportement mecanique et les mecanismes d’endommagement de deux composites alumine/alumine a renforts tisses bi- et tridimensionnels ont ete etudies et compares. La microstructure de ces CMC a matrice faible a ete caracterisee a p…
Titanium alloy (Ti-6Al-4V) is often used in orthopedic and dental implants integrated into bone tissue. However, the negative impact of in vivo corrosion of these metallic biomedical implants still remains a complex problem in the medical field. As current surface modifications of this alloy are investigated for poten…
Model CdTe systems –both single-crystalline (sx) and poly-crystalline (px) –are investigated experimentally as a means to understand the role of competing material properties and processing steps in improving the performance of standard thin-film solar cells. Previous device optimization work is reviewed explaining th…
In this chapter, we develop two semiempirical submodels for devolatilization/combustion and gasification of a moving coal particle and validate them against CFD-based particle-resolved simulations. The distinguishing feature of the devolatilization model is its ability to predict the ignition of a dried raw coal parti…
Understanding nanocrystal surfaces helps to direct their assembly into novel material architectures. [Also see Reports by Boneschanscher et al. and Zherebetskyy et al. ]
The utilization of wood for furniture industry require special handling such as reduction of the content of water in order to produce a quality product. Drying the means used to reduce the water content results in a timber. The purpose of this is to predict the value pebelitian water content (moisture content) on the…
In order to improve formability, it is practicable to control the texture through adjusting process parameters. This work describes the evolution of microstructure and texture during thermomechanical processing of Al-Mg-Si-Cu alloy. With the change of deformation conditions, both the microstructure and texture change…
Allylation of carbonyl compounds (1) is arguably one of the most important and widely used carbon-carbon bond-forming reactions in organic synthesis (Scheme 14.1).1 The resulting homoallylic alcohols (2) are useful platforms for further synthetic elaboration, especially in the event that the allylation reaction procee…
This research investigates stressed sheeting welded (SSW) effects of stiffened thin plate structure with preheat temperature variations. Stiffened thin plate structure is a structure that consists of frame and sheet that used on vehicle structure because of requirement low volume materials. The principle of SSW is ins…
Abstract Review: 37 refs.
Abstract Review: 71 refs.
Objective: Though biopsy is ultimately the gold standard for breast cancer detection, medical imaging can be a valuable tool for gathering information in vivo for both screening and diagnosis. In this study, we propose the use of gold nanoparticles (GNPs) modified with polyethylene glycol (PEG) as a biocompatible cont…