Materials Literature
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We studied the use of cellulose nanocrystals (CNXs) obtained after acid hydrolysis of ramie cellulose fibers to reinforce poly(epsilon-caprolactone) (PCL) nanofibers. Chemical grafting with low-molecular-weight PCL diol onto the CNXs was carried out in an attempt to improve the interfacial adhesion with the fiber matr…
The oxalate-bridged bimetallic complexes {NH(prol)(3)}[M(II)Cr(III)(ox)(3)] (M(II) = Mn(II), Fe(II), Co(II)) with hydrophilic tri(3-hydroxypropyl)ammonium (NH(prol)(3)(+)) were prepared by a new synthetic procedure, and the effects of the NH(prol)(3)(+) ion upon the structure, magnetism, and electrical conduction were…
Understanding conduction in Cu(2)O is vital to the optimization of Cu-based p-type transparent conducting oxides. Using a screened hybrid-density-functional approach we have investigated the formation of p-type defects in Cu(2)O giving rise to single-particle levels that are deep in the band gap, consistent with exper…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTPlatinum Drug Distribution in Cancer Cells and TumorsAlice V. Klein and Trevor W. Hambley*View Author Information School of Chemistry, The University of Sydney, NSW 2006, Australia* Corresponding author. E-mail: [email protected]. Phone: 61-2-9351-2830. Fax: 61-2-9351-3329.Ci…
UNLABELLED: ANCHOR is a web-based implementation of an original method that takes a single amino acid sequence as an input and predicts protein binding regions that are disordered in isolation but can undergo disorder-to-order transition upon binding. The server incorporates the result of a general disorder prediction…
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Abstract Safe and reliable seal materials for high-pressure oxygen systems sometimes appear to be extinct species when sought out by oxygen systems designers. Materials that seal well are easy to find, but these materials are typically incompatible with oxygen, especially in cryogenic liquid form. This incompatibility…
We report two orthorhombic high-pressure polymorphs of β- Na(2)SO(4)- and La(2)NiO(4)-type structures for lithium beryllium hydrides (Li(2)BeH(4)) predicted by first-principles calculations. The β- Na(2)SO(4)-type structure possesses BeH(4) tetrahedra, similar to the zero-pressure α-Li(2)BeH(4) structure, but in drama…
Abstract Using previously obtained data on the solubilities of curatives in SBR, EPDM and in NBR, different mixing procedures were performed on 50/50 SBR/EPDM and NBR/EPDM blends. In contrast to a previous phase‐mixing study, the curatives were added to separate phases before final blending, in an attempt to control t…
Abstract Nylon 1010 blends with ethylene–vinyl acetate copolymer (EVA) and maleated ethylene–vinyl acetate (EVA‐ g ‐MAH) were prepared through melt blending. The vinyl acetate (VA) content and viscosity of EVA significantly affected the notched impact strength of nylon/EVA/EVA‐ g ‐MAH (80/15/5) blends. The nylon/EVA/E…
Abstract The influence of oil palm empty fruit bunch (OPEFB) fiber and oil palm empty fruit bunches grafted with poly(methyl methacrylate) (OPEFB‐ g ‐PMMA) on the tensile properties of poly(vinyl chloride) (PVC) was investigated. The OPEFB‐ g ‐PMMA fiber was first prepared with the optimum conditions for the grafting…
Conjugated polymers (CPs) contain one pi-conjugated backbone and functional groups that could be ionized in high dielectric media. These materials combine the semiconducting and photon harvesting properties of electronically delocalized polymers with the charge-mediated behavior of polyelectrolytes. CPs can be used as…
Lanthanide ion-pair (Eu(3+)/Tb(3+), Dy(3+)/Tb(3+), Sm(3+)/Tb(3+) and Eu(3+)/Dy(3+)) codoped NaGdF(4) nanocrystals using Ce(3+) as the sensitizer were prepared via the polyol method. The nanocrystals with different codoped lanthanide ion-pairs retain their individual optical properties and the combined spectra can be d…
Complexes of Sm(III), Eu(III), and Yb(III) with a new polydentate ether ligand with amide arms were synthesized. Solid state X-ray structures of the complexes reveal all three complexes crystallize in monoclinic unit cells. The mononuclear complexes have nine coordinate tricapped trigonal prismatic geometries with coo…
The local atomic and electronic structures of the Na and K impurities and the vacancy at the Ca site (${\text{Na}}_{\text{Ca}}$, ${\text{K}}_{\text{Ca}}$, and ${\text{V}}_{\text{Ca}}$), and their induced electrostatic potentials in ${\text{Ca}}_{2}{\text{CuO}}_{2}{\text{Cl}}_{2}$ have been investigated by using the $\…
A simple scheme to fabricate 2-D arrays of Au/titania hybrid nanopatterns is presented, using polystyrene-block-poly(ethylene oxide) diblock copolymer (PS-b-PEO) as templates coupled with sol-gel chemistry. Both the functionalized Au nanoparticles (NPs) and titania precursors are selectively incorporated into the PEO…
Large-size mesoporous thin films with a mixed titania-silica framework and an <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mrow> <mml:mi>Im</mml:mi> <mml:mover accent="true"> <mml:mn>3</mml:mn> <mml:mo stretchy="true">¯</mml:mo> </mml:mover> <mml:mi>m</mml:mi> </mml:mrow> </mml:math…
We report a structural, magnetic and transport study in La(0.5)Ca(0.5-x)Ba(x)MnO(3) (0<x≤0.5) using neutron diffraction, magnetization and resistivity measurements. The samples crystallize in an orthorhombic structure with Pnma space group and no structural transition is observed with Ba doping. Substituting Ca with B…
Defect distributions have been documented by optical metallography, scanning electron microscopy and electron backscatter diffraction in alloy 152 and 52 mockups welds, alloy 52 and 52M overlay mockups and an alloy 52M inlay. Primary defects were small cracks at grain boundaries except for more extensive cracking in t…
Investigation of the chemical constituents of Leptadenia pyrotechnica (Forsk.) Decne (Asclepiadaceae) led to the isolation of three cardiac glycosides; 14,19-dihydroxycard-20 (22)-enolide-3-O-[β-d-glucopyranosyl-β-d-digitoxoside] C-I, 14,19-dihydroxycard-20 (22)-enolide-3-O-[β-d-glucopyranosyl-β-d-glucopyranoside] C-I…