Materials Literature
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New chiral derivatives of thiophene fused with menthane, camphor or the 3R-3-methylcyclohexane ring were prepared and studied as chiral dopants in cholesteric liquid crystalline mixtures. The helical twisting power of the most effective compounds of this series, menthothiophenes, was strong enough to obtain selective…
A carbon–sulfur molecule has been designed as a mimic of peptides. Density functional theory calculations showed that the oxidation of 10 moles of methanedithiol led to a polydisulfide oligomer, HS (CH 2SS)9CH 2SH. The polydisulfide can adopt an α -helix type of secondary structure, where the chain is coiled. Unlike p…
We report a fiber optic photoluminescence (PL) measurement system using a novel hybrid probe composed of a series of single mode fiber (SMF) and double-clad fiber (DCF) terminated with a coreless silica fiber (CSF) segment and glass micro-lens formed on its cleaved-facet. The fiber probe provided a good guidance and f…
Abstract Die Entkohlung einer Stahlschmelze über Aufblasen von Sauerstoff im Konverterprozess ist mit einem unerwünschten Abbrand der metallischen Einsatzstoffe verbunden. Durch eine Optimierung der Prozessführung für den Blasstahlkonverter auf der Grundlage von dynamischen Modellen und innovativen messtechnischen Ver…
In the title compound, {[NiWO(4)(C(16)H(36)N(4))]·4H(2)O}(n), the Ni(II) ion lies on an inversion center and is octahedrally coordinated by four N atoms of the tetradentate macrocyclic 5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane (L) ligand in the equatorial plane and two O atoms of [WO(4)](2-) ani…
Abstract A novel sodium germanomolybdate compound [Na6(H2O)12][H2Ge2Mo6O26] (1) has been successfully synthesized by conventional solution method. The structure was determined by single-crystal X-ray diffraction analysis and further characterized by IR and UV spectroscopy and X-ray powder diffraction (XRPD). X-ray str…
The presented molecular modeling is utilized to innovate new peptidomimetic compounds.These proposed compounds are designed to act as HCV NS3 protease antiviral.The suggested antivirals are divided into two groups.The first group has hexapeptide (Glu-Asp-Val-Val-Cys-Cys) binding to cellulose monomer at positions 2, 3…
The objective of this work is to improve the interlaminar shear strength and tribological properties of the high-density polyethylene (HDPE) composites by oxidation treatment method of carbon fiber (CF) and ultraviolet irradiation of HDPE. The morphologies of untreated and treated CFs were characterized by x-ray photo…
Polyaniline is among a family of conductive polymers, that exhibits properties similar to some metals. Accordingly quantum mechanical calculations have been performed to study the possible polymerization of aniline on the surface of fullerene. Several model molecules representing the polymerization of aniline are stud…
Abstrak Limbah merupakan sisa-sisa produksi yang memiliki nilai ekonomis yang jauh lebih rendah daripada produk jadi. Namun limbah dapat diolah kembali menjadi produk yang memiliki nilai ekonomis yang lebih tinggi. Sisa potongan kain merupakan jenis limbah yang dapat diolah kembali. Sisa potongan kain dapat dimanfaatk…
This paper describes a calculation mechanism obtained from experimental data of ASTM and d20/4 curves to determine the volumetric expansion of naphtha. The study included historical data (experimental) of naphtha from directly distillation samples produced in a Brazilian refinery for a period of one year processing, c…
In the cation of the title salt, C(18)H(23)N(2) (+)·C(24)H(20)B(-), the pyridine ring forms a dihedral angle of 14.23 (6)° with the benzene ring. One of the ethyl groups of the cation was refined as disordered over two sets of sites with equal occupancies.
This paper reports the finite element modeling of axial crack growth in a thin aluminum tube under gaseous detonation loading. The finite element method was used to handle the moving load and also the nonlinear characteristics of the problem. The simulation results were compared with the experimental results reported…
Abstract A series of polylactide/poly(ethylene glycol) (PLA/PEG) block copolymers were synthesized by ring‐opening polymerization of L‐ or D‐lactide in the presence of mono‐ or di‐hydroxyl PEG. The effects of stereocomplexation on the physicochemical behavior of PLA/PEG copolymers in aqueous solution were investigated…
The reaction of CoCl2 · 6H2O, mpkoH (methyl 2-pyridyl ketone oxime), NEt3, and NaN3 in a 1 : 1 : 2 : 1 molar ratio affords a linear trinuclear complex, [CoII(mpko)4(N3)4(H2O)2] (1). Complex 1 has been characterized by single-crystal X-ray diffraction, elemental analysis, and infrared spectrum. Three cobalt ions are in…
N atom is one of the most frequent foreign interstitial atoms in α-iron along with C atoms. The Fe–C potential has been well-developed and can reproduce many significant interactions of C with point defects present in α-iron. However, there exists no satisfactory Fe–N potential to describe the interactions of N with p…
Polystyrene (PS) microspheres coated with β-cyclodextrin (β-CD) were fabricated via γ-ray-induced emulsion polymerization in a ternary system of styrene/β-CD/water (St/β-CD/water). The solid inclusion complex of St and β-CD particles formed at the St droplets-water interface can stabilize the emulsion as the surfactan…
This study was conducted to evaluate the potential of wet-milled corn germ protein as an extender in plywood adhesive. Partially defatted dried corn germ from wet-milling, containing 2.1% (dry basis, db) crude oil and 24.7% (db) crude protein, was ground to 40-mesh particle size to produce the meal. The predominant wa…
Knowledge of the dynamic features of protein interfaces is necessary for a deeper understanding of protein-protein interactions. We performed normal-mode analysis (NMA) of 517 nonredundant homodimers and their protomers to characterize dimer interfaces from a dynamic perspective. The motion vector calculated by NMA fo…
A subwavelength-period grating made in an intrinsic anisotropic medium was experimentally fabricated by means of imprinting and subsequent photoinduced molecular alignment of photocrosslinkable polymer liquid crystals (PCLC). Optical properties including the total birefringence and optic axis were theoretically and ex…