Materials Literature
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Heavily boron-doped polycrystalline silicon has been reported to be characterized by somewhat unexpectedly high power factor. High Seebeck coefficients are however unexpected in materials with high carrier densities. A semiquantitative model was proposed, showing that the potential barrier structure at grain boundarie…
In this work we have developed an analytical method to measure potential titanium debris released from TiO2 nanotube layers devices immersed in biological fluids. This quantitative study is highly required to ensure both the security and non toxicity of the nanostructured surfaces used as future implantable medical de…
Initially undamaged polymer-bonded explosives can transition from conductive burning to more violent convective burning via rapid deconsolidation at higher pressures. The pressure-dependent infiltration of cracks and pores, i.e., damage, by product gases at the burn-front is a key step in the transition to convective…
Three new donor–acceptor copolymers containing the electron acceptor di-2-thienyl-2′,1′,3′-benzothiadiazole (DTBT) linked to the electron donors 9,9-bis[6-(4′-hexyloxy-terphenyloxy)-hexyl]-fluorene (Ftp) with terphenyl mesogen side chain viathiophene units are synthesized to study polymer structure–properties relation…
A self-assembled capsule facilitates reactions of isocyanates with water. The capsule provides an amphiphilic environment with hydrophobic aromatic ends and hydrophilic glycoluril units at the center. Reaction takes place in the narrow, cylindrical space to form the N,N-dialkylurea, which then appears in a longer caps…
Surface modification is a good way to improve the surface activity and interfacial strength of multiwalled carbon nanotubes (MWCNTs) when used as fillers in the polymer composites. Among the reported methods for nanotube modification, mixed acid oxidation and plasma treatment is often used by introducing polar groups…
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The Ti3Al (α2 phase)-based Ti–22Al–11Nb–2Mo–1Fe (in at%) alloy is a derivative of Ti2AlNb (O phase)-based orthorhombic Ti–22Al–27Nb (in at%) and was designed to reduce Nb content and thereby material cost. In the present study, two microstructure modification methods, a minor addition of boron (B) and a thermo-mechani…
A study of fragmentation behavior in a Ni+Al structural energetic material was undertaken. Rings were fabricated from a Ni+Al structural energetic material and subjected to explosive fragmentation. Photon Doppler Velocimetry (PDV) data and ring fragments were collected and analyzed. Fragment sizes were found to be muc…
High-strain-rate response of three polyurea compositions with varying molecular weights has been investigated using a Split Hopkinson Pressure Bar arrangement equipped with aluminum bars. Three polyurea compositions were synthesized from polyamines (Versalink, Air Products) with a multi-functional isocyanate (Isonate…
As part of the 2006 French Act on sustainable radioactive waste and waste management, CEA has been developing a process, (EXAm), in order to separate americium from curium and fission product downstream of COEXTM or PUREX processes. The goal is to recover Am up to 99%. The first step mainly consists of splitting ameri…
Aim: The aim of our study was to develop new ibuprofen, that is better effect and less side effect using computer aided drug design. We found totally 10 molecular modifications of ibuprofen. Accordingly structure 9 is considered as the most appropriately modified ibuprofen drug that would have significant effect than…
Newly designed miktoarm star-shaped copolymers made of poly[(benzyl methacrylate(BMA)-co-(ε-caprolacton)(CL)] and poly[(BMA-b-MMA-b-BMA)-co-ε-caprolacton)(CL)] were synthesized by combining ring-opening polymerization (ROP) of ε-caprolactone (CL) and poly(BMA) five membered lacton fuctionalized prepared via atom trans…
To investigate the influence of multiple angled columnar defects (CDs) on flux pinning properties, three controlled splay configurations of CDs were installed by heavy–ion irradiation in YBCO thin films: a parallel configuration of CDs, bimodal splay configurations consisting of crossed CDs at ±10° or ±45° relative to…
Plasma nitriding of AISI type 303 austenitic stainless steel using microwave system at various input powers was conducted in present study. The nitrided layers were characterized via scanning electron microscopy, transmission electron microscopy and Vickers microhardness tester. The anti-bacterial property of this nit…
The adsorption properties of monosaccharide glucose and disaccharide isomaltose have been investigated on BEA zeolites with different moduli for a reaction-integrated adsorption system. For BEA-type zeolites from Süd-Chemie the moduli Si/Al 12.5, 75, and 225 were compared and showed a maximum for isomaltose adsorption…
Mass spectrometric analysis indicates that the copper(II) phthalocyanine derived from pyromellitic dianhydride is a mononuclear species, not a tetranuclear species as previously thought. The peripheral substitution of the phthalocyanine core with eight carboxylic acid groups, rather than extended conjugation, is respo…
Gp96 (GRP94) is a chaperone that is responsible for molecular folding and assembly of proteins. To investigate correlations among Gp96 expression, sensitivity to radiotherapy and clinical features of nasopharyngeal carcinoma (NPC), the expression of Gp96 in 98 NPC samples was analyzed by immunohistochemistry and Weste…
The particles from gas-saturated solutions process was performed to micronize lecithin isolated by ethanol from deoiled mackerel by Supercritical Carbon Dioxide (SC-CO2). The particle formation of lecithin with biodegradable polymer, polyethylene glycol (PEG) was carried out by PGSS process using SC-CO2. Conditions we…
Horseradish peroxidase (HRP) multimer on a graphene modified glassy carbon electrode (GCE) has been fabricated by carbodiimide coupling reaction. The possible adsorption sites of HRP on graphene were predicted by Lamarckian genetic algorithm. It has been observed that HRP has five possible sites for its adsorption to…