Materials Literature
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Environmental concerns related to the greenhouse effect of SF6 have driven changes to take place in the power distribution industry. This paper discusses the main challenges for next generation medium voltage (MV) ring main units (RMU) using new technologies and materials with reduced environmental impact. Market requ…
Cu2CdSnS4 thin film was prepared by sulfurizing (Cu, Sn)S/CdS structured precursors prepared by a combination of the successive ionic layer absorption and reaction method and the chemical bath deposition method. X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectr…
BACKGROUND: Proteins are known to be dynamic in nature, changing from one conformation to another while performing vital cellular tasks. It is important to understand these movements in order to better understand protein function. At the same time, experimental techniques provide us with only single snapshots of the w…
ABSTRACT: In this work we systematically analyze the structural, electronic and optical properties of the Cu2ZnSnS4 and Cu2ZnSnSe4. We show that kesterite is more stable phase than the stannite phase and the estimated direct band gaps energy for Cu2ZnSn(S, Se)4 compounds ranges from 0.70 to 1.47 eV. Furthermore, defec…
Progress in science depends on new techniques, new discoveries and new ideas, probably in that order. —Sidney Brenner (2002 Nobel laureate in physiology or medicine) It was an exciting day for the fields of computational chemistry and biology when news of the 2013 Nobel Prize in Chemistry filtered in early on the morn…
The primary objectives of this study were to investigate the relationship between surface free energy of wood-flour (WF) and the mechanical and physical properties of wood-high density polyethylene (HDPE) composites (WPCs). The contact angles of different liquids against unmodified and modified poplar WF with 4% n-ste…
A new hexadentate Schiff base ligand derived from condensation of 4-aminoantipyrine with aromatic diketone and thiosemicarbazide, and its metal complexes were characterized by elemental analyses, molar conductance, magnetic susceptibility measurement and spectral (electronic, IR, Uv-Vis, 1 H NMR) studies. It has been…
Determining the most resistant packaging polymers against insect's penetration, from storage to consumption by consumers is first goal of this study. In this study, the best polymer that could inhibit insect penetration was determined and then, fumigation with phosphine was carried out for preventing the re-infestatio…
Iron(II) octachlorotetrapyrazinoporphyrazine (FeTPyzPACl 8 , 1) was obtained by a direct tetramerization reaction of 1,2-dichloro-4,5-dicyanopyrazine and iron(II) acetylacetonate in 1-chloronaphthalene at 220 o C. It was dissolved in o-dichlorobenzene by a complex formation reaction with the CN -anions by adding bis(t…
On the course to sustainable energy, artificial photosynthesis is one of the greatest scientific challenges of our time. From a chemist point of view, the understanding of proton-coupled electron transfers which take place during the process is a fundamental issue. To decipher them, transient absorption spectroscopy,…
A range of norbornane based amphiphiles, which possess a rigid ‘kink’ in the centre of amphiphiles, were accessed via a concise four step synthesis. The self-assembly properties of these novel compounds were then investigated and the critical aggregation concentration (CAC), hydrodynamic diameter (DH) by dynamic light…
Abstract—Current shielding effectiveness (SE) of electromagnetic shielding (EMS) fabric is tested in the plane state, the testing results are difficult to describe the shielding effect of a garment in a curve surface state after manufactured by the fabric. To solve this problem, this study proposes a new SE computatio…
The reactions of [MnIII(L4a)Cl] or [MnIII(L4b)Cl] with [Pt(SCN)6]2− resulted in the formation of a 1D polymeric complex [{Mn(L4a)}2{μ-Pt(SCN)6}]n (1) and a trinuclear compound [{Mn(L4b)(H2O)}2{μ-Pt(SCN)6}] (2), where L4a and L4b are tetradentate dianionic Schiff base ligands, H2L4a = N,N′-ethylenebis(salicylimine) and…
The dynamic response of large space structures under accidental impact has been the subject of intense research since the occurrence of the 9/11 incident. In the present paper, using the 3D ANSYS/LS-DYNA, size effect and material property effect of the impactor on the damage modes of the single-layer Kiewitt-8 reticul…
One technique for reducing residual stress in welds is high pressure rolling of the weld seam. In this study, a variety of experimental techniques, including microhardness measurements and cross-weld tensile tests with digital image correlation, have been used to characterise the effects of rolling on the mechanical p…
A comparative computational study of the reaction mechanisms for hydrocarbon oxidations catalysed by Mn- and Fe-doped nanoporous aluminophosphates shows distinctive features for each transition metal depending on its electronic configuration. Preactivation of Mn catalysts is easier due to the higher stability of Mn(II…
A new series of organotin(IV) complexes with purine bases theophylline (HL1) and theobromine (L2) of the types R3Sn(L1), R2Sn(L1)Cl, R3Sn(L2)Cl, and R2Sn(L2)Cl2 (R = C6H5CH2–; p‐ClC6H4CH2–) have been synthesized in anhydrous THF. The complexes were characterized by elemental analysis, conductance measurements, molecul…
Deformation microstructure of pure Ni powder milled for short duration was studied.The microstructure, as obtained on the basis of Rietveld analysis and microstructural modeling, shows inhomogeneity and consists of 'heavily deformed' with twin faults probability and 'slightly deformed' components with varying dislocat…
Mechanical activation is a commonly used and relatively fast and inexpensive procedure for sample preparation before the sintering process. Cordierite, a stoichiometric mixture of three different oxides (2MgO?2Al2O3?5SiO2) is a very attractive, widely used high-temperature ceramic material. The mechanical activation o…
The thickness of a poly(sulfo propyl methacrylate) (PSPM) brush is determined by Atomic Force Microscopy (AFM) imaging as a function of the loading force at different ionic strengths, ranging from Milli-Q water to 1 M NaCl. Imaging is performed both with a sharp tip and a colloidal probe. The brush thickness strongly…