Materials Literature
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Mullite crystals were grown from a MgO/Al 2 O 3 /TiO 2 /SiO 2 /B 2 O 3 /CaO glass melt via the method of electrochemically induced nucleation. Nucleation occurs near the cathode; the initially formed crystals are not oriented with their polar axes parallel to the electric field. The crystals showed needle-like shape.…
RNase HI from the hyperthermophile Sulfolobus tokodaii (Sto-RNase HI) is stabilized by its C-terminal residues. In this work, the stabilization effect of the Sto-RNase HI C-terminal residues was investigated in detail by thermodynamic measurements of the stability of variants lacking the disulfide bond (C58/145A), or…
This review presents some common features of nanoparticles - activity, toxicity and biological activity. Humans are exposed to tiny particles via dust storms, volcanic ash, and other natural processes and the body systems are well adapted to protect from these potentially harmful intruders. Technological advancement h…
A kinetic study of the trimerization of monocyanate ester both in the bulk and in the nanoconfinement of controlled pore glass is performed using differential scanning calorimetry. Both isothermal and dynamic experiments are analyzed. Although the activation energy for the reaction is the same within experimental erro…
Platelet adhesion and activation rates are frequently used to assess the thrombogenicity of biomaterials, which is a crucial step for the development of blood-contacting devices. Until now, electron and confocal microscopes have been used to investigate platelet activation but they failed to characterize this activati…
We synthesized epitaxial perovskite oxide superlattices consisting of alternating ferromagnetic and antiferromagnetic sublayers with a six-unit-cell sublayer thickness. This sublayer thickness corresponds to the maximum in interfacial spin-flop coupling for this system. Soft x-ray photoemission electron microscopy was…
The molecule 1,3:2,4-di-O-benzylidene sorbitol (DBS) is a common "gelator" that forms thermally reversible gels in diverse organic solvents. Solid-state (13)C and (1)H NMR techniques, along with electron microscopy, are utilized in an exploratory study of DBS in the gelled state where we consider both in situ and drie…
Conventional liposomal drug delivery has been associated with obvious limitations, such as a rapid absorption by the recticulo-endothelial system in the liver and spleen, a short circulation time and a low therapeutic efficacy. Various modifications of liposomal drugs have been developed to prolong the duration of act…
We calculate the photocurrent in a clean graphene sample normally irradiated by a monochromatic electromagnetic field and subject to a step-like electrostatic potential. We consider the photon energies $\ensuremath{\hbar}\ensuremath{\Omega}$ that significantly exceed the height of the potential barrier, as is the case…
The magnetic field-driven orientation of microcrystals of six diamagnetic layered transition metal oxides (HLaNb(2)O(7), HCa(2)Nb(3)O(10)·0.5H(2)O, KNaCa(2)Nb(4)O(13), KTiTaO(5), KTiNbO(5), and H(2.2)K(1.8)Nb(6)O(17)·nH(2)O) suspended in epoxy resins was studied by X-ray diffraction using permanent magnets producing a…
Using the spin-unrestricted hybrid density functional theory method, we have investigated the intermolecular interaction effects on the longitudinal static second hyperpolarizability (γ) of open-shell singlet slipped-stack dimers composed of singlet diradical square planar nickel complexes involving o-semiquinonato ty…
Within the SulfoSYS (Sulfolobus Systems Biology) project, the effect of temperature on a metabolic network is investigated at the systems level. Sulfolobus solfataricus utilizes an unusual branched ED (Entner-Doudoroff) pathway for sugar degradation that is promiscuous for glucose and galactose. In the course of metab…
Abstract The co‐vaporization and simultaneous polymerization of EDOT and APTES on a FTS‐coated substrate resulting in a homogeneous PEDOT/ASSQ thin film is described. The physicochemical properties of the film, including surface hardness, solvent mechanical wear resistance, and resistance to scratch, were much better…
Carbon steel, the most widely used engineering material, accounts for approximately 85%, of the annual steel production worldwide. Despite its relatively limited corrosion resistance, carbon steel is used in large tonnages in marine applications, nuclear power and fossil fuel power plants, transportation, chemical pro…
Abstract The boundary reaction between InSb and InTe bilayers shows that In 3 Sb 1 Te 2 (IST) is formed at the InTe side first due to the diffusion of Sb atoms from InSb to InTe rather than the diffusion of Te atoms from InTe to InSb at the crystallization temperature of IST. The diffusion of Sb atoms into InTe change…
Sulfolobus solfataricus and Sulfolobus islandicus contain several genes exhibiting D-arabinose-inducible expression and these systems are ideal for studying mechanisms of archaeal gene expression. At sequence level, only two highly conserved cis elements are present on the promoters: a regulatory element named ara box…
Two hybrid materials based on dodecatungstophosphoric acid (HPW) dispersed in ormosils modified with 3-aminopropiltrietoxysilane (APTS) or with N -(3-(trimethoxysilyl)-propyl)-ethylenediamine (TSPEN) show reversible photochromic response induced by irradiation in the 200−390 nm UV range. A set of solid-state nuclear m…
A series of ceria‐based solid solution electrolyte, Bi 2 O 3 and Sm 2 O 3 codoped CeO 2 (Sm 0.2− x Bi x Ce 0.8 O 1.9 , x =0, 0.05, 0.10, 0.15, 0.20), were synthesized via a Pechini‐type gel route. The phase composition was analyzed by the X‐ray diffraction. Present study shows that Sm 0.2− x Bi x Ce 0.8 O 1.9 is excee…
In the isostructural oxides Ca(3)CoMO(6) (M = Co, Rh, Ir), the CoMO(6) chains made up of face-sharing CoO(6) trigonal prisms and MO(6) octahedra are separated by Ca atoms. We analyzed the magnetic and electronic properties of these oxides on the basis of density functional theory calculations including on-site repulsi…
Concentrated water−alkaline solutions of sodium and potassium borohydrides are used as a fuel and hydrogen source in hydrogen power engineering, including low-temperature fuel cells; borohydrides convert into metaborates. The performance of fuel mixtures is determined by their solubility in water. The solubility in th…