Materials Literature
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One of the important and still current problems occurring in the fish processing industry is the intensive wear of the cutting surface of industrial cutting blades used to separate the fish raw material. In the paper, the proposes a proprietary solution to the above problem consisting in the regeneration of worn surfa…
In this paper, the diatomite mineral from Mugalzhar field, Aktobe region, has been used as a matrix of catalyst particles to synthesize multiwall carbon nanotubes (MWCNTs) by Catalytic Chemical Vapor Deposition method (CCVD). As a source of carbon was used a propane-butane gas mixture, as a catalyst – Ni particles dep…
A novel compound hexa-rhodamine substituted phosphazene (HRP) with six active centers on a cyclotriphosphazene ring was synthesized using the alkyne-azide “click” reaction. The structure of HRP was characterized using spectroscopic techniques. The optical sensor properties of HRP for metal ions were investigated using…
Abstract A fused pyrrolopyridine core having substituents on the nitrogen atom instead of the carbon atom of the indoloindole unit is developed as a new donor unit for organic electronics. The new donor–acceptor copolymers, PDHPHBT, PDHPFBT, and PDHP2FBT, are synthesized using the new donor unit, well‐known benzothiad…
Synthesis and structural analysis of gold-palladium alloy nanoparticles using co-sputtering of independent sources, Martínez-Carreón, M J, Solís-Pomar, Francisco, Fundora, Abel, Gutiérrez-Lazos, C D, Hernández-Pinero, Jorge Luis, Mejia-Rosales, S, Pérez-Tijerina, Eduardo
Two series of magnetic nanopowders were synthesized at room temperature starting from a mixture of iron II and III precursors, FeSO4 and FeCl3, respectively. Precipitation agents, as KOH and NaOH were used. While the concentration of the added ferrous and ferric solutions ranged between 0.1 M and 0.0125 M, the hydroxi…
The effect of water wave impacts and breakdown on the output performance of Water-Dielectric Single Electrode Mode Triboelectric Nanogenerators (WDSE-TENG) has been evaluated. When water contacts a TENG consisting of a hydrophobic dielectric layer, the triboelectric effect is generated with a net negative charge on th…
Abstract We report the design and synthesis of three highly stable and porous covalent organic gels (H C OGs) based on C 3 ‐symmetric benzene‐1,3,5‐tricarbohydrazides. The resultant H C OGs beared excellent adsorption properties and represented good reusability towards fluoroquinolones from aqueous solutions. The exte…
Abstract Two new molecular boxes, the mono‐bromo box [Au6(Triphos)4Br](SbF6)5⋅6(CH2Cl2), 4 mB, and the dibromo box, [Au6(Triphos)4Br2⋅H2O](SbF6)4⋅4(CH2Cl2), 5 dB, have been prepared in crystalline form. Although constructed from non‐luminescent components, both are strongly luminescent. Like its chloro counterpart, th…
Abstract Unlike the solar energy, infrared radiation from black bodies around us is always available. In this paper, a novel energy harvesting device is proposed for absorption of the infrared radiation from hot objects around us at temperatures beyond 300 K, in the vicinity of 10 μm wavelength, or from the Earth itse…
"Volume 45 in the highly successful series Handbook of Porphyrin Science presents three very informative chapters of significant topical interest to researchers in the broad field of porphyrin science. The first chapter (Chapter 215) systematically describes in great detail the many synthetic methods utilized for the…
The modeling of hydrocarbon selectivity and CO conversion of the Fischer–Tropsch synthesis over Fe–Ni/Al2O3 catalyst by using coupled artificial neural networks (ANN) and design of experiment (DOE) approaches were investigated. The variable parameters for modeling consisted of the pressure range between 2 and 10 bar a…
The detection of dopamine, an important neurotransmitter in the central nervous system, is relevant because low levels of dopamine can cause brain disorders. Here, a novel electrochemical platform made of a hydrogel–graphene oxide nanocomposite was employed to electrochemically determine simultaneously dopamine (DA) a…
In this research, zinc oxide (ZnO) films are doped with various amounts of Al dopants, from 0 to 13 at.%, using ion-beam co-sputtering for Zn and Al metallic targets at room temperature. The Al-doped ZnO (AZO) films appear to have lower transmittances in the UV and near-IR ranges. The electrical and optical properties…
Abstract Ionisation zones, or spokes to which the discharge self-organises during a high-power impulse magnetron sputtering (HiPIMS) pulse, are a recently investigated phenomenon; however, adequately describing or representing these highly dynamical features is a challenge. As the spokes rotate above the target their…
Abstract We investigated whether combination therapy of G‐CSF and erythropoietin (EPO)‐liposome with Siaryl Lewis X (SLX) is more cardioprotective than G‐CSF or EPO‐liposome with SLX alone. For the purpose of generating myocardial infarction (MI), rabbits underwent 30 minutes of coronary occlusion and 14 days of reper…
Their small sizes enable nanomaterials to express novel properties that have created a revolution in science and technology since their discovery in the 1990s. The new transport, morphology and material properties of nano-enabled products, however, have imposed revision of environmental, health, and safety risk assess…
Composite quantum chemical methods W1X-1 and CBS-QB3 are used to calculate the gas phase standard enthalpy of formation, entropy, and heat capacity of 38 phosphines and phosphine oxides for which reliable experimental thermochemical information is limited or simply nonexistent. For alkyl phosphines and phosphine oxide…
This study examined the effect of high temperature and Litsea cubeba oil with its main components against molds (Aspergillus niger, Aspergillus flavus, Penicillium sp., Penicillium cyclopium, Rhizopus sp., Fusarium sp., and Cladosporium sp.) on bamboo food packaging. Response surface methodology (RSM) with X1 (concent…
We have previously reported the synthesis of enantiopure β,γ-diamino acids and relevant short α/γ-peptide containing such building blocks. Complete nuclear magnetic resonance (NMR) studies, together with molecular modeling, highlighted the ability of a β,γ-diamino acid to induce various intramolecular turns. In this p…