Materials Literature
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In the present study,an attempt has been made to evaluate phytotoxicity of free and chitosan coated silver and copper nanoparticles against Vigna mungo under microplot condition and the toxic effect on soil microbial status and microbial population has been studied.Respective nanoparticles were synthesized by chemical…
Tungsten heavy alloys are currently used as kinetic energy penetrators in military applications due to their high density and superior mechanical properties. In the literature, quasi-static properties of different tungsten heavy alloys based on W-Ni-Cu and W-Ni-Fe ternary systems are well documented and presented. How…
Development of green clean energy has become one of promising challenge recently. One popular application of solar energy is photocatalysis, where semiconductors were used as photocatalyst to convert solar light into photoelectrons/holes. Photocatalysis technology has been widely applied for water splitting and degrad…
This paper will focus on Bouc-Wen hysteresis model to study the time-scale similarity of the hysteresis. Considering different hysteresis characteristics of Bouc-Wen model, this paper studies the time-scale similarity between the output curves of different hysteresis characteristics under the excitation of the triangu…
Dynamic crack initiation with crack-tip loading rates of K̇ ≈ 2.106MPa√ms-1 in a high strength G42CrMoS4 steel was investigated. To this end, a previously developed split Hopkinson pressure bar with four-point bending was utilised. V-notched and pre-cracked Charpy specimens were tested. The detection of dynamic crack…
With the continued increase in commercial and industrial use of nanomaterials, their interactions with biological interfaces in applied and natural systems will need to be understood to improve efficacy and assess ecological risks.
Frank Würthner opened a general discussion of the paper by George Pistolis: In your squares there is an orthogonal arrangement of the transition dipoles. Could you please explain why the Förster mechanism still enables efficient energy transfer leading to fluorescence depolarization? Furthermor
For free-cutting steels, their mechanical properties, especially local toughness, are functionally degraded. The second phase exists in steel matrix, as a chip breaker, tool edge stabilizer and tool life extender. For these purposes, the second phase plays the role of a solid lubricant. Typical materials as the second…
Successive ionic layer adsorption and reaction (SILAR) method is employed to deposit nano-sized UO 2 S thin films and their chemical conversion to Ag 2 S thin films based on negative free energy of formation.
AuNPs, capped with anti-8-OHdG antibody, aggregate when 8-OHdG was added, resulting in color change and redshift of absorption wavelength. So a simple and rapid method to selectively determine 8-OHdG was developed and semi-quantitative determination could be achieved by the naked eye.
The structures of five-vertex dimetallaboranes Cp2M2B3H7 (Cp = η(5)-C5H5) of the second and third row transition metals, including the experimentally known Cp*2Rh2B3H7 (Cp* = η(5)-Me5C5), have been investigated by density functional theory. The predicted low-energy structures for Cp2M2B3H7 (M = Rh, Ir) are tetragonal…
A facile method was established for the preparation of a SWCNTs-oxide test strip to act as a one-step SPE adsorbent and SERS substrate, which can be used as a rapid monitor for triazine residues in lake water by combing solid-phase extraction and surface-enhanced Raman spectroscopy.
The objective of this study was to examine whether surface crystal orientation can be used to associate or differentiate metal fracture fragments. The orientations of individual crystals and crystals across the fracture plane were measured on polished steel and iron alloy surfaces using Electron Backscattered Diffract…
The Ligand Polyhedral Model (LPM) is applied to the carbonyl scrambling observed on the NMR timescale for the two cluster carbonyls [Rh4(CO)12] and [Rh6(CO)16]. For [Rh4(CO)12] the NMR data is completely consistent with the libration of the Rh4 central core about a C3 - rotational axis within the icosahedral shell of…
This paper presents theoretical modeling for predicting the optimum twist angle on yarn made by open end rotor spinning machine in textile industry. Fiber movement on yarn can be used for predicting the optimum twist angle which can be used to reduce yarn breaking in spinning process. In this research the twist angle…
Kinetico-mechanistic studies on the substitution reactivity of the [Co{(μ-ET)cyclen}(H2O)2](3+) complex cation at pH values within the 6.0-7.0 range with biologically significant ligands have been carried out. The substitution processes have been found to occur exclusively on the mono-hydroxobridged [(Co{(μ-ET)cyclen}…
The crystal structure of compound C6H12NO2+·C2HO4−·H2O, or NIPE+·OXAL−·HYDR, is an ionic ensemble assisted by hydrogen bonds established between NIPE+ cations, OXAL− semi-oxalate anions and water molecules. The molecules are connected by O--H···O and N--H···O hydrogen bonds, forming linear ∙∙∙semi-oxalate∙∙∙semi-oxala…
The paper deals with the development of ethanol gas sensing films of tin oxide nano–particles which are insensitive to saturated aliphatic hydrocarbons, such as gasoline vapours. Stannous alkoxide (particularly iso–propoxide) and tin 2–ethyl hexanoate in solution have been used for fabrication of tin oxide films on al…
Abstract: Fluorine NMR is a useful probe of protein structure, conformation and folding in fluorinated proteins, owing to the high sensitivity, large chemical shift of the 19F nucleus and the lack of high background signal to be suppressed. Protein NMR studies using fluorinated amino acids are a valuable addition to t…
Symmetrical Bragg diffraction of a spherical X-ray wave in a perfect semi-infinite crystal with a plane entrance surface is considered. As distinct from the standard theory, the two-dimensional curvature of the incident wavefront is taken into account. Using the corresponding Green function, a general expression for t…