Materials Literature
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A review of transmission electron microscopy studies of planar defects in 18R and 2H martensites in Cu-Zn-Al alloys is presented. The non-basal plane faults observed in the 2H structure, the F1 faults, show two kinds of dislocations at their ends. In contrast, two types of non-basal plane faults are observed in the 18…
Two new ternary uranium selenides, AU(2)Se(6) (A = K, Cs), were prepared using the reactive flux method. Single crystal X-ray diffraction was performed on single crystals. The compounds crystallize in the orthorhombic Immm space group, Z = 2. CsU(2)Se(6) has cell parameters of a = 4.046(2) A, b = 5.559(3) A, and c = 2…
Erbium and ytterbium environments in low-silica calcium aluminate glasses, with nominal composition 58 CaO, $27.1\ensuremath{-}x$ ${\mathrm{Al}}_{2}{\mathrm{O}}_{3},$ 6.9 MgO, 8 ${\mathrm{SiO}}_{2},$ x ${\mathrm{Er}}_{2}{\mathrm{O}}_{3},$ or ${\mathrm{Yb}}_{2}{\mathrm{O}}_{3},$ $0.2<~x<~1.5(\mathrm{mol}%),$ were…
Abstract The fiber properties of PTT have been the subject of several reports, although very few reports describe the properties of molded specimens. In this work, the dynamic mechanical relaxation behavior of compression‐molded PTT films has been investigated. The added flexibility of the PTT was found to lower the t…
Abstract A high‐trans 1,4‐butadiene/isoprene copolymer (TBIP) was synthesized in a 5‐L autoclave with hydrogen as an effective molecular weight modifier. The effects of hydrogen on the catalyst efficiency and molecular weight of the copolymers were investigated. The processability and physicomechanical properties of T…
In this article, we demonstrated the synthesis of metallodielectric composite particles comprising a metal shell on a dielectric core and an outer coating of an insulating dielectric layer by depositing silver on silica supporting cores followed by coating of titania. A combination of surface reaction and surface seed…
Abstract Novel adsorbents were prepared by immobilizing tannins on collagen fibre matrices. Their adsorption properties, including adsorption equilibrium, adsorption kinetics, and column adsorption kinetics to Cu(II) were investigated. Immobilized Myrica rubra tannin and black wattle tannin exhibited significantly hig…
Abstract Pretreatment of shrimp shells was investigated in order to lower the costs and to improve the sustainability of chitin production. Physical pretreatment comprising drying, grinding and sieving is attractive for the recovery of 50% of shrimp protein as a dry powder. Pretreatment of shells by shearing in acidif…
This paper describes the fabrication of self-assembled monolayer (SAM) patterns of m-d-poly(ethylene glycol) (m-dPEG) acid molecules onto polyelectrolyte multilayers (PEMs). The patterned SAMs on PEMs were created by ionic interactions using microcontact printing (microCP) technique. The created m-dPEG acid monolayer…
The double perovskites ${\mathrm{La}}_{2}M{\mathrm{RuO}}_{6+\ensuremath{\delta}}$ contain ${M}^{2+}$ ions for $M=\mathrm{Mg},$ Zn, Co, and Ni and for $M=\mathrm{Mn}$ and Fe, ${M}^{3+}$ ions. Annealed samples have ordered ${M}^{2+}$ and Ru(IV), but samples with ${M}^{3+}$ ions are atomically disordered and remain oxidi…
Abstract Effects of the operating policies—the initial initiator amount; the initial emulsifier amount; the monomer addition mode: batch or semibatch; and the monomer addition rate under “monomer‐starved conditions” for the control of particle size distribution (PSD)—were studied through a model that simulates batch a…
Summary 1. The effect of phosphate on species composition in biofilms was studied under three different phosphate regimes (0.5, 5 and 50 μ m ) in two different multi species communities: one composed of the four diatom species Melosira varians , Nitzschia perminuta , Navicula trivialis and Achnanthes lanceolata and on…
Let's twist again: Reaction of a racemic mixture of secochlorinato nickel(ii) with cholesterol generates separable diastereomers of a novel porphyrinic chromophore containing a direct β-to-o-phenyl linkage. Exchange of the cholesteryl side chain for an ethyl group produces the enantiomeric conformers of the ruffled ma…
The preparation of monoglycerides from fatty methyl esters and glycerol can be carried out in the presence of acid or basic catalysts. Moreover, the use of porous and basic solid catalysts could induce a shape selectivity modifying the monoglyceride selectivity. Lauric (C12), myristic (C14) and stearic (C18) acid meth…
pH-empfindliche Gele: Durch Kupplung von Aminosäure-Substituenten an ein Cyclohexangerüst erhält man niedermolekulare Verbindungen, die in sehr niedrigen Konzentrationen Wasser gelieren. Ihr modularer Aufbau (siehe Bild; AA=Aminosäure(n), X=hydrophiler Substituent, hydrophobe Regionen violett, hydrophile Regionen rosa…
We present calculations for electron affinities, ionization potentials, and quasiparticle gaps for hydrogenated silicon and germanium nanocrystals (quantum dots) with radii up to $14\mathrm{\AA{}}$ or about 800 atoms using real-space ab initio pseudopotentials constructed within the local-density approximation. We sho…
The manganese(III) complexes studied in this report derive from asymmetrical trianionic ligands abbreviated H(3)L(i) (i = 4-6). These ligands are obtained through reaction of salicylaldehyde with "half-units", the latter resulting from monocondensation of different diamines with phenylsalicylate,. Upon deprotonation,…
Abstract Water vapor permeable fabrics were prepared by coating shape‐memory polyurethane (PU), which was synthesized from poly(tetramethylene glycol), 4,4′‐methylene bis(phenylisocyanate), and 1,4‐butanediol, onto polyester woven fabrics. Water vapor permeability and mechanical properties were investigated as a funct…
Unusual ZnO superstructures with nanosheets standing on the backbone of spindle-like rods were synthesized for the first time from a flakelike Zn 5 (OH) 8 Cl 2 ·H 2 O precursor under mild solution conditions without using high temperature or any organic molecular templates. The formation of the ring-like nanosheets st…
Getting the picture: Citrate and other intermediates of the citric acid cycle can be imaged by time-resolved fluorescence with a Eu3+ tetracycline complex as a fluorescent probe (see picture). The time resolution enables discrimination between intermediates, and enzymatic conversions are not needed.