Materials Literature
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The technique of data processing for thermogravimetry of calcite with use of MathCad 11 is developed. There are designed basic kinetic parameters of processes of calcite powder thermal decomposition with use of the equation of first order reaction: size of critical increment of energy, a kinetic constant of decomposit…
The catalytic properties of plasma-chemically and thermally treated triple zirconium orthophosphates Na 3 ZrM(PO 4 ) 3 (M = Zn, Co, Cu) in the transformation of butanol-2 are studied. X-ray photoelectron spectroscopy data indicate that the surface composition of the samples differs from the stoichiometry, especially i…
Reaction of tetrachlorophthalonitrile with some C -nucleophiles was studied. Only one chlorine atom was substituted regioselectively in the position 4 of benzene ring with diethyl malonate and malononitrile; no reaction occurred in case of bulkier diethyl ethylmalonate and ethylmalononitrile. In case of dimedone the d…
The C 60 -toluene and C 70 -toluene complexes were studied by IR-Fourier spectroscopy. The complexes were obtained by crystallization from a toluene solution at room temperature. The changes in the IR spectra caused by the deformation of toluene molecules in the complexes allowed us to study the phase transitions in t…
Chitosan‐stearate complexes (CSC) were prepared by reacting chitosan (CS) with stearic acid. The formation and characteristics of CSC were studied by FTIR spectroscopy, X‐ray diffraction (XRD), and thermogravimetric analysis (TGA). The results showed that the complexes were synthesized by the electrostatic interaction…
We have developed inexpensive and easy-handling measurement methods on intra-pellet neutron flux. A foil activation method with metallic foils, which were fabricated by punching out technique and etching technique to reduce fabrication error and positioning error, was used for the intra-pellet neutron flux distributio…
Abstract Purpose – The authors aimed to develop environmentally stable NIR‐absorbing windows by blending a near‐infrared (NIR)‐absorbing dye and a photo‐crosslinkable polymer. Design/methodology/approach – To prepare an environmentally stable NIR‐absorbing window, a NIR‐absorbing dye was mixed with crosslinkable poly(…
Abstract Plasma is a useful tool to synthesize carbon nanomaterials, including diamonds, fullerenes, nanotubes, and graphenes. This review gives an overview of these carbon nanomaterials produced by thermal or nonthermal plasmas and of the authors' work related to plasma‐enhanced chemical vapor deposition of carbon na…
The heat effects of 2,2′-dipyridyl (2,2′-Dipy) dissolution were measured by the calorimetric method at 298.15 K over the whole range of the mixed methanol-acetonitrile (MeOH-AN) solvent compositions. Transfer enthalpies of 2,2′-Dipy from MeOH into its mixtures with AN were calculated according to the obtained data. It…
Abstract Solid‐state Nuclear Magnetic Resonance (ss‐NMR) 13C single‐pulse excitation spectroscopy in combination with the magic‐angle spinning (MAS) technique was applied to a series of Phalaenopsis tissues, including the leaf, sheath, stem, and root, at different growth and spiking periods. Compared with{1H}/13C cros…
We have reported recently that fibers with surface roughness can be produced through the melt spinning of polyamide 6 (PA6) blended with 20 wt% of poly(ethylene terephthalate) (PET) if the extrusion temperature is lower than the melting temperature of PET. This technology is applicable for the production of fibers for…
In today’s world of miniaturization sensitivity of satellite communication system depends on isolation between transmitting and receiving Microstrip patch antennas which shares common ground plane. Coupling between transmitting and receiving antenna degrades overall system performance. It had been observed that When t…
The effect of reduction temperature on the optoelectronic properties of diodes based on n-type Si and reduced graphene oxide (RGO) doped with a conductive polymer [poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate) (PEDOT:PSS)] was examined in this study. It is found that conductivity of RGO-doped PE…
The effects of the preparation procedure, active component concentration, and conditions of formation of nanosized cobalt-containing systems based on TiO 2 and SiO 2 mesoporous powders on their catalytic activity in the oxidation of carbon monoxide were studied. The active phase in the systems was cobalt spinel CoCo 2…
The effect of strain on the electronic properties of BC 3 sheet was studied by using first-principles density functional theory. It is found that the band gap of BC 3 sheet increases gradually when the applied tensile strain ranges from 0% to 12.5%. While the band gap decreases as the compressive strain is applied, es…
This study explores the influence of cotton fiber length characteristics on the High Volume Instrument (HVI) strength measurement. A set of cotton samples cut at different lengths from a common parent sliver was used. HVI strength data exhibited a consistent trend as a function of the fiber length properties. This dat…
In this study, nanocrystalline Sn-doped In(2)O(3) (ITO) films were deposited by electron beam evaporation technique and were annealed in air atmosphere from 300°C to 500°C for 30 min. Then, the annealed ITO films in air at 450°C were reannealed in vacuum for 1 h at different temperatures from 300°C to 500°C. The effec…
With the aid of molecular simulations, a new aluminum organic framework structure is designed, and the hydrogen storage capability of the designed structure is studied using grand canonical Monte Carlo technique. Results show that the hydrogen storage capacity of aluminum organic framework at 77 K and 1 MPa is about 4…
A method for synthesizing iron-containing nanocomposite based on fibroporous polytetrafluoroethylene (PTFE) is described. Fibroporous PTFE obtained under the radiation of a CO 2 laser on block PTFE is modified in supercritical carbon dioxide (sc CO 2 ) to form micro- and nanoporous structures. Porous fluoropolymer is…
Abstract A new pyridine‐substituted dithiolene complex, PPh4[Au(4‐pdddt)2] (3), was prepared and characterised. Cyclic voltammetry shows three redox processes corresponding to the interconversion between dianionic, monoanionic, neutral and cationic states, as often presented by this type of bis(dithiolene) complexes.…