Problems and Pitfalls in Diagnostic Electron Microscopy
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
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New method for calculating the dissipation parameters in ultrafast biochemical reactions from protein crystal structure data
A new method of calculating the spectral function of system-bath interaction during elementary biochemical reaction is proposed. This method was applied to the primary electron transfer in the photosynthetic reaction center of purple bacteria Rh. Sphaeroides. The calculated spectral functions differ significantly from…
High Angular Resolution Electron Channeling X-ray/Electron Spectroscopy
Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.
Study of possibility of ultrasonic coagulation in air flow
In the article the results of the experiments on determining the possibility of ultrasonic coagulation of aerosol in air flow. The experiments were carried out at different rate of air flow. It is shown, that the application of ultrasonic influence allows to increase purification efficiency of gas flow in 3 to 6 times…
Relaxation of polarized states in thin films of BST
The possibility of the local polarization of epitaxial Ba 0.8 Sr 0.2 TiO 3 thin film is studied by means of piezoresponse force microscopy. The existence of a local polarized state depends on the duration of the applied pulse. The kinetics of polarized states explaining the experiment is considered in the context of p…
Obtaining nanoporous inorganic sheets
An original technique to obtain porous sheets from various inorganic substances (silicon dioxide, hydroxyapatite, and silver) using polymer matrices whose high-disperse structure is formed by the crazing mechanism has been described. The structure of a porous sheet and its characteristics can vary in wide ranges (the…
Experimental Studies on Conducting Polyaniline
Polymers are normally used as insulators in many industrial applications due to their high resistivity but there are important developments where polymers can be used as conductors. Electrically conductive polymers find applications in electromagnetic shielding, antistatic coatings, organic light emitting diodes (OLED…
A molecular receptor based on the 2,3,7,8,12,13,17,18-octaethyl-21,23-dimethylporphyrin for detection of fluoride ions: Synthesis, spectral and complexation properties
2,3,7,8,12,13,17,18-Octaethyl-21-methylporphyrin and 2,3,7,8,12,13,17,18-octaethyl-22,23-dimethylporphyrin monotriflate based on the former were synthesized. Basic and complexing properties of these compounds were studied by the method of spectrophotometric titration in acetonitrile-perchloric acid and acetonitrile-te…
Sci—Sat AM: Brachy — 02: Extracting Wair from the 1976 electron beam measurements of domen and lamperti
The average energy expended by an energetic electron to create an ion pair in air, W air is an important quantity in radiation dosimetry. The data obtained by Domen and Lamperti using electron beams in the energy range from 15 to 50 MeV can be used to extract a value for W air if the electron stopping powers of graphi…
Thermal and Gas Barrier Properties of COC/SiO 2 Nanocomposites
This study is performed primarily to investigate the effects of chemical modification on silica surface and the silica content on the thermal and gas barrier properties of a cyclo olefin copolymer (COC) matrix. The COC/SiO 2 nanocomposites were constructed from COC and three species of SiO 2 nanoparticles (AEROSIL A20…
Theoretical investigations into the field enhancement factor of silicon structures
In order to optimize our field-emitting silicon structures, the influence of geometric parameters like aspect ratio, aperture angle and curvature on the field enhancement factor was investigated by finite element simulations. A universal geometric model consisting of a rounded triangle and elliptic curvatures was take…
Super-Hydrophilicity of Stainless Steel Surface Induced by Heat Treatment with Gaseous Ozone
The hydrophilic states of stainless steel surface treated by the separate or combined use of gaseous ozone and heat were investigated by measuring the contact angle of a water droplet, the content of the surface carbon contaminants, and the adsorption isotherm of water vapor. Super-hydrophilic states of stainless stee…
Evaluation of Ge<sub>x</sub>Sb<sub>y</sub>Te<sub>z</sub> Film Grown by Chemical Vapor Deposition
This paper describes structure evaluation of GexSbyTez (GST) film fabricated by chemical vapor deposition (CVD). We successfully established composition controlled GST CVD with smooth surface by applying appropriate deposition conditions. By increasing Ge flow rate or reducing substrate temperature, the average grain…
Comparison of Silk Glands of Diapause and Non-Diapause LarvalSitodiplosis mosellana
The wheat midge, Sitodiplosis mosellana (Géhin) (Diptera: Cecidomyiidae), is one of the most serious pests of wheat worldwide. It overwinters as cocooned larvae in diapause and non-diapause forms. The cocoon is made of silk from the salivary glands. The silk glands, therefore, play an important role in the S. mosellan…
Adhesion-diffusion formation of a multilayer wall for the liquid metal flow channel of a fusion reactor blanket
A technique for calculating the adhesion-diffusion formation of a multilayer metal-ceramic structure is presented. The development of this technique is dictated by requirements imposed on the wall of the liquid metal flow channel of a fusion reactor blanket. The parameters of the adhesion-diffusion process (pressure,…
Internal mechanical stresses and the thermodynamic and adhesion parameters of the metal condensate-single-crystal silicon system
The kinetics of generation of internal mechanical stresses σ( d ) in chromium, copper, gold, and aluminum thin films on single-crystal silicon substrates at different deposition rates has been experimentally investigated using the cantilever method. A two-step character of the variations in internal tensile stresses h…
Flexible PVDF-BaTiO<inf>3</inf> nanocomposites for pressure sensors
In this work, PVDF-BaTiO3composites were prepared using cryogenic high-energy ball milling (HEBM). PVDF-BaTiO3mixtures with different weight fractions of submicrometric BaTiO3particles were subjected to 1 h of effective milling. By applying pressure at 200 °C the resulting powder was molded in the form of relatively t…
Techniques for electrical tree imaging
Electrical trees are defects which can grow in polymeric electrical insulation under high electrical stresses. Their name results from their visual aspect which resembles natural trees. The growth of electrical trees is a precursor to long-term electrical failure; however, the basic mechanism of tree initiation and gr…
Hot-melt adhesives based on polyamides of dimerized fatty acids and adhesive compositions from oligoamidoamines and epoxy resins
The production and the application of hot-melt adhesives and adhesive compositions based on polyamide and the oligoamidoamine derivatives of dimerized fatty acids are studied. The possibility of synthesizing basic polyamide thermoplasts with desired physicochemical properties is shown.
Non-Isothermal Kinetics Studies on the Thermal Decomposition of Boron Doped g-C<sub>3</sub>N<sub>4</sub> by TG Method
Melamine and boron trioxide (B 2 O 3 ) were directly pyrolyzed in semi-closed system to prepare Boron doped g-C 3 N 4 . The analytic results of XRD, XPS and FTIR proved that g-C 3 N 4 is doped by boron successfully. The thermal decomposition of B doped g-C 3 N 4 has been studied using TGA-DTG technique. The iterative…