Materials Literature
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In the midinfrared absorption of ${\mathrm{Sr}}_{1\ensuremath{-}x}{\mathrm{Ce}}_{x}{\mathrm{MnO}}_{3}$ at low electron doping $(x=0.05)$, a band at 0.3 eV is fully replaced by another one at 0.9 eV as the system becomes antiferromagnetic (AF) of type $G$. A weaker effect occurs at $x=0.10$ for an AF phase of type $C$.…
Recently, there has been a growing interest in applying artificial materials, known as Left-Handed Metamaterials (LHM), to accelerator physics. These materials have both negative permittivity and permeability and therefore possess several unusual properties: the index of refraction is negative and the direction of the…
The carbon nanotubes (CNTs) were prepared by catalytic decompose of benzene using floating transition method at 1100-1200°C. Benzene was used as carbon source and ferrocene as catalyst with thiophene. The carbon nanotubes are straight with diameter 20-50 nm, internal diameter 10-30 nm and length 50-1000 μm. The carbon…
In order to solve the contradiction found in the Hall-Petch behavior in the ultra-finegrained- and nano-grained- materials, reinvestigation of the physical meaning of Hall-Petch constants has become necessary. The present work is hence attempted to theoretically construct the Hall-Petch slope constant, KH-P. This was…
This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if…
Collagen is the most used naturally occurring scaffold material. It’s a structural protein ubiquitous among mammalian. The ability of collagen type I to host different cell phenotype in vitro and its low antigenecity in vivo are well known. However, the principal drawback of collagenbased materials consists in their l…
Abstract Salts of thiocyanate (SCN-) have been widely used as corrosion inhibitors in halide-based brine completion/packer fluids for many years. When applied, they have unique characteristics over conventional amine-based inhibitors (excellent solubility in high-density brines and ability to control corrosion of brin…
This DOI is not currently attached to any metadata records. DOIs can’t actually ever be deleted (they’re persistent), but sometimes our members create DOIs in error. We do have a process to approximate deletion which we follow only in rare cases where the DOI has been genuinely created in error, and most crucially, if…
The electronic structures of cubic and hexagonal phases of GaN have been investigated by high-resolution electron energy-loss spectroscopy in a monochromated transmission electron microscope. Both the $\mathrm{Ga}\text{\ensuremath{-}}{L}_{2,3}$ and N $K$-edges were measured. The data are compared to the latest version…
Thermo-chemical reactions of modified PAN fibers during heat-treatment process were systematically studied by DSC, FT-IR, EA, XPS, etc. Comparing with original PAN fibers, chemical reactions, structures and elemental compositions of fibers modified with potassium permanganate (KMnO4) were all changed at a certain exte…
Abstract The effects of maleated thermoplastic elastomer (TPEg) on morphological development of polypropylene (PP)/polyamide 6 (PA6) blends with a fixed PA6 content (30 wt %) were investigated. For purpose of comparison, nonmaleated thermoplastic elastomer (TPE) was also added to the above binary blends. A comparative…
Structure formation of polymer chains such as polymer crystallization has so far been extensively studied.Since polymer chains have many internal degrees of freedom, they show diverse static and dynamical structures.Because of their structural diversity, polymeric materials
The KEKB ARES cavity is equipped with two types of HOM absorbers, which are made of different commercial products of the alpha-type SiC ceramics. Their dielectric responses to the RF frequency show the dielectric relaxation properties. These properties can be explained by the polycrystal structure model with electrica…
We have investigated the effects of grafted polymer chains [poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide)] on the bending modulus and the intermembrane interactions of lamellar membranes (C(12)E(5) water) by means of a neutron spin-echo and a small-angle x-ray scattering technique. In this study the…
Electrospinning has recently emerged as a potential technique for fabricating biomimetic tissue engineering scaffolds. In this study, Poly (l-lactic acid) (PLLA) /Nano-hydroxyapatite (HA) hybrid nanofibers scaffolds were prepared by electrospinning. The relationship between process parameters and fiber diameter has be…
The objectives of this research was to evaluate the physical and mechanical properties of composites of Wood Flour (WF) and Recycle Polypropylene (RPP) prepared under various WF contents, WF sizes and modifier contents. WF from mixed-soft wood species and Eucalyptus deglupta Blume species were used as filler. The comp…
A novel technique, named "core suction," for fabricating optical fiber preforms has been devised. The technique involves drawing the molten nonconventional core glass material into the cladding tube to form the preform. The developed technique is simple, inexpensive, and shows great potential for fabricating preforms…
Polarization dependent studies of near edge x-ray absorption fine structure (NEXAFS) show evidence for the presence of aligned π-bonded carbon structures and the formation of a nonplanar CN phase in tetrahedral amorphous nitrogenated carbon (ta-CN) films deposited at room temperature. Moreover, the analysis of NEXAFS…
A series of poly(anhydride-esters) based on poly(1,10-bis( o-carboxyphenoxy)decanoate) (CPD) and poly(1,6-bis( p-carboxyphenoxy)hexane) ( p-CPH) were synthesized by melt-condensation polymerization. Poly-(anhydride-esters) that contain CPD hydrolytically degraded into salicylic acid, however, these homopolymers have m…
Besides dissolved gases such as hydrogen, the partial vapour pressure of volatile solute elements, such as zinc, has been accounted for in equations governing the nucleation and growth of pores in solidifying alloys. In particular, a simple analytical solution giving the porosity fraction as a function of the fraction…