Materials Literature
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Chick cDNA clones for a new member of the FACIT (fibril-associated collagens with interrupted triple helices) subfamily have been isolated and sequenced. The collagen chain encoded by these cDNAs was assigned the next consecutive number, making it the alpha1(XX) collagen chain. Assignment of type XX collagen to the FA…
The first examples of an oriented periodic mesoporous organosilica (PMO) film, containing a variety of organic groups (ethane, ethene, benzene, thiophene) inside the channel walls, are reported. The mesostructure of the PMO film appears oriented with respect to the surface of the underlying glass substrate. Liquid-cry…
Results are given of an in situ X-ray diffraction study of the crystal-lattice state of a TiNi-based alloy during deformation under the effect of an external stress in the pretransition region preceding the B 2- R - B 19′ martensitic transformations. The pretransition state preceding martensitic transformations in the…
Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text V. Yu. Zerov, V. G. Malyarov, I. A. Khrebtov, Yu. V. Kulikov, I. I. Shaganov, and A. D. Smirnov , "Uncooled membrane-type linear microbolometer array b…
The sensing properties of molecular composites, tetratertbutyl copper phthalocyanine (TBCPC) and polyoctadecyl thiophene (PODT), were investigated by optical and conductance measurements. A standard substrate for gas sensing was made, consisting of a set of eight interdigitated gold electrodes, 230 /spl mu/m wide and…
Microstructural attributes of steels affect hysteretic magnetic properties because the microstructure affects domain wall movement and pinning. Two important features are grain size and dislocation density. The consensus experimentally is that the coercivity tends to be linearly related to the inverse of the average g…
The coordination of flavins to Lewis-acidic zinc(II)cyclen complexes, as a mimic for a metalloprotein binding site, changes their redox properties significantly. The coordination facilitates the electrochemical reduction of the flavin and stabilizes the flavinhydroquinone redox stage, so that a 600 mV more positive po…
Abstract Intercalation of an ammonium amphiphile having an azobenzene chromophore, 4-dodecyloxy-4 ‘-(trimethylammoniopentyloxy)azobenzene and 4-(ω-trimethylammoniodecyloxy) -p’- (octyloxy)azobenzene bromide, into the layered silicate magadiite (ideal formula Na 2 Si 14 O 29· n H 2 O) was carried out by a conventional…
The conductivity measurements of 60WO3–40B2O3 and 40WO3–5Sb2O3–55TeO2 glasses have been carried out as a function of temperature. The results suggest that the conduction occurs by hopping of small polarons. Dielectric measurements of 60WO3–40B2O3 glass show that the temperature behavior could be described in terms of…
Two novel kinds of alcohol-soluble ladderlike poly(silsesquioxane)s containing side-chain hydroxy groups (OH-T1 and OH-T2) were prepared successfully for the first time by hydrolysis of ladderlike poly(silsesquioxane)s with side-chain ester groups (Ester-T1 and Ester-T2), which were synthesized by stepwise coupling po…
With the objective of obtaining slow-acting isoniazid derivatives, of potential use as chemoprophylactics or chemotherapeutics in tuberculosis, the micelle-forming copolymer of poly(ethylene glycol)-poly(aspartic acid) prodrug with isoniazid was synthesized. The derivative obtained was found to be active in Mycobacter…
We report on the cooperative photoluminescence (PL) properties of closely packed CdSe nanocrystal thin films and propose a model to elucidate the nonlinear PL behavior. The PL exhibits an initial decay and a subsequent enhancement under continuous excitation, which are attributed to the photodarkening and the effects…
Ternary lithium germanophosphate glasses have been synthesized over a wide range of compositions. Thermal and spectroscopic techniques (IR, Raman, and 31 P MAS NMR) have been used to investigate their properties and structures. It is found that modification occurs almost exclusively on the P 2 O 5 part of the structur…
Conductivity and magnetic susceptibility of disordered cubic titanium monoxide TiO y (0.920≤ y ≤1.262) are studied. Temperature dependences of the conductivity of TiO y monoxides with y ≤1.069 are described by the Bloch-Grüneisen function with Debye temperature 400–480 K, and temperature dependences of the susceptibil…
The present study investigated whether electrochemical impedance spectroscopy (EIS) could be used to monitor stress corrosion cracking (SCC). First, a model was developed that interpreted the impedance response of a cracked surface (i.e., the model could distinguish between a flat electrode surface and a surface with…
A three-dimensional (3D) multi-dislocation system in an elastically anisotropic crystal under applied stress is considered as a particular case of the phase field microelasticity theory of multivariant stress-induced martensitic transformations. This approach reduces the problem of evolution of a dislocation system to…
The thermal shock resistance (indentation–quench method), fracture toughness, and thermal conductivity of three alumina–silicon–carbide–whisker composites and alumina have been investigated. A new procedure for the evaluation of thermal conductivity data is suggested, and higher room‐temperature thermal conductivity t…
The recrystallisation behaviour of PM2000 oxide dispersion strengthened ferritic alloy has been investigated for tube specimens which had been cold deformed after extrusion. The evolution of the recrystallisation temperature, defined as the minimum temperature at which the specimen begins to recrystallise, has been st…
X-ray structure determination of proteins by using the multiple-wavelength anomalous dispersion method targeting selenomethionine is now widely employed. Isoleucine was examined for the second choice of the substitution of methionine next to leucine. We performed a systematic mutational study of the substitutions of m…
Nitroaromatische Sprengstoffe können einfach und schnell nachgewiesen werden, indem man das Löschen der Photolumineszenz fluoreszierender Polysilole beobachtet. Das Löschen beruht auf dem Elektronentransfer vom Leitungsband der Polysilole zu elektronenarmen Molekülen wie Pikrinsäure, Nitrobenzol, DNT und TNT. Verdünnt…