Materials Literature
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Ferriallanite-(Ce), ideally CaCeFe3+AlFe2+(SiO4)(Si2O7)O(OH), is the analogue of allanite-(Ce) with Fe3+ dominant in the octahedral site M(1). It is of metasomatic origin and occurs in an alkaline granitic pegmatite of Mount Ulyn Khuren in the Altai Range (about 48°32’N, 92°55’E), Mongolian People’s Republic. Ferriall…
Abstract The paper describes in detail how amine‐terminated dendronized polystyrenes 1 (G2), 2 (G3), and 3 (G1) of varying generations (first: G1, second: G2, third: G3) were reacted with the G1 (and G2) dendrons 4 , 5c , and 6b carrying active esters at their focal point to furnish polymers 7 (G4), 8 (G2), 9 (G3), an…
Carbon nanotubes (CNTs) have attracted much attention for their unique properties, although their formation mechanism is not well understood. The authors have been studying a technique to form CNTs by an electron beam that is carried out in a transmission electron microscope (TEM) and is compatible with in situ and re…
Ceramic laminates have been fabricated with thin layers, containing a mixture of unstabilized zirconia (MZ‐ZrO 2 ) and alumina (Al 2 O 3 ), sandwiched between thicker layers of alumina that contain a small fraction of Y 2 O 3 ‐stabilized tetragonal ZrO 2 to inhibit grain growth. The MZ‐ZrO 2 undergoes a tetragonal‐to‐…
Heavily doped barium titanate (BaTiO 3 ) powders, one with a donor‐rich and the other with an acceptor‐rich composition, were prepared. After sintering, the donor‐rich specimen exhibited a fine‐grained microstructure but significant grain growth occurred in the acceptor‐rich specimen. A stable dielectric behavior was…
Abstract Enzymatic hydrolysis of poly(butylene succinate) (PBS) and poly(butylene succinate‐ co ‐ L ‐lactate) (PBSL) has been studied by using a lipase originated from Pseudomonas cepacia . It has been found that the drawn fibers of PBSL are readily hydrolyzed by the action of the lipase, while those of PBS undergo li…
Abstract The direct-methods program SnB provides an efficient means for solving protein substructures containing many heavy-atom sites (current record: 160). In order to meet the high-throughput requirements of structural genomics projects, substructure determination needs to be tightly integrated with other aspects o…
The 1.6-A crystal structure of the covalent ketimine complex of apple 1-aminocyclopropane-1-carboxylate (ACC) synthase with the potent inhibitor l-aminoethoxyvinylglycine (AVG) is described. ACC synthase catalyzes the committed step in the biosynthesis of ethylene, a plant hormone that is responsible for the initiatio…
Pb[(Mg 1/3 Nb 2/3 ) 0.65 Ti 0.35 ]O 3 (PMN–35PT) powder was prepared using the columbite precursor method. Fully dense compacts were formed by hot‐pressing the powder at 950°C, and then the compacts were annealed at 1150°C for 5 and 10 h, respectively. Dielectric and piezoelectric properties of the as‐hot‐pressed and…
Phospholipid spherules composed of lipid bilayer membranes entrapping a central aqueous core were first described more than 30 years ago (Bangham et al 1965). The term liposome was coined in 1968 (Sessa & Weissmann 1968) and the first suggestions that these vesicles might have potential as vehicles for targeted drug d…
Abstract Nanocomposites are a new class of polymer material with an ultrafine phase dispersion of the order of a few nanometers that shows very interesting properties often very different from those of conventional filled polymers. In this work the mechanical and optical properties of Poly[ethylene‐ co ‐(vinyl acetate…
Granzyme K (GzmK) belongs to a family of trypsin-like serine proteases localized in electron dense cytoplasmic granules of activated natural killer and cytotoxic T-cells. Like the related granzymes A and B, GzmK can trigger DNA fragmentation and is involved in apoptosis. We expressed the Ser(195) --> Ala variant of hu…
Tellurium oxide glass hosts have exceptionally large solubility for RE-ions. In this paper, the relationship between the host glass composition and spectroscopic properties of Er 3+ -doped and Tm 3+ -doped tellurite glasses and fibres has been examined in detail. In particular, the effect of compositional modification…
The formation of protein aggregates is associated with unfolding and denaturation of proteins. Recent studies have indicated that, in Escherichia coli, cellular proteins tend to aggregate when the bacteria are exposed to thermal stress. Here, we show that the aggregation of one single E. coli cytoplasmic protein limit…
Previously we reported synthesis and characterization of water-soluble chiral conducting polymer nanocomposites via template-guided synthesis. Experimental procedures and parameters need to be carefully controlled to achieve synthesis of water-soluble nanocomposites. Here, we describe a modified synthetic procedure wi…
It is of vital importance for the study of phase diagrams to investigate in situ diffusionless phase transition points at high temperatures. We have developed high‐temperature techniques to measure in situ neutron and synchrotron X‐ray powder diffractometry profiles. This paper reviews our recent studies obtained usin…
The longitudinal ultrasonic sound velocity and attenuation, the resistivity, and lattice parameters were studied as a function of temperature from 30 K to 300 K in La 1 − x Ca x MnO 3 (0.5 ⩽ x ⩽ 0.9). For all the samples, a dramatic stiffening of the sound velocity below the charge ordering transition temperature T CO…
The optical properties of nanoscopic arrays of metal particles are dominated by plasmon resonances and electromagnetic interaction between the particles. We use electron-beam lithography to prepare arrays of noncentrosymmetric gold particles and study their linear and second-order nonlinear optical properties. By vary…
Neovascularisation is a promising alternative therapeutic approach to re-establish blood flow in ischaemic tissues of patients suffering from coronary artery or peripheral artery disease. Often, these patients are not suitable candidates for current revascularisation procedures such as coronary angioplasty or bypass s…
Abstract Metastable cationic gold nanoparticles were newly developed by the use of thiocholine bromide (TCB) as stabilizer. The gold nanoparticles electrostatically bound to DNA molecules and then underwent self-fusion into the wire-like structures. The use of TCB as a labile ligand was essential to achieve non-electr…