Materials Literature
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Durability of concrete is defined as its ability to resist any form of deterioration, allowing it to retain its original form and quality after it has been exposed to the environment of its intended use. Sulfate attack causes concrete to lose its compressive strength through the decomposition of the products of hydrat…
A solution method was developed to synthesize reduced graphene oxide (RGO) – red phosphorous (RP) composites. The uniform distribution of RP particles into three-dimensional conductive RGO network was obtained. Due to both improved electronic structure and mechanical properties, the hybrids delivered a high lithium st…
The first general procedure is described for the synthesis of novel bisarylmethylidenes of 2-methoxy-2-methyl-1,3-dioxan-5-one 1. Thus, several derivatives of 3 are obtained rapidly in high yields by reacting 1 with different aldehydes in the presence of catalytic quantities of pyrrolidine in EtOH at room temperature.…
Feasibility of designing and synthesizing ‘smart’ and ‘intelligent’ materials using nanostructured building blocks has been examined here based on the current status of the progress made in this context. The added advantages of using 2D layered/nonlayered materials along with phytosomal species derived from natural pl…
A pair of unusual melibiose esters (1α/1β) and a pair of unusual raffinose esters (2α/2β), were isolated from Scrophularia ningpoensis. Structures of them were established by detailed spectroscopic analyses to be 6-O-(E)-cinnamoyl-α-d-galactopyranosyl-(1→6)-α(β)-d-glucopyranose (1α/1β) and 6-O-(E)/(Z)-cinnamoyl-α-d-ga…
One of the most common castings applied in industrial production is aluminum-silicon alloy (ca. 12 % Si). Non-modified Al-Si alloy is characterized by coarse-grained structure, responsible for its poor physicochemical properties. The microstructure and mechanical properties of hyper-eutectic silumins may be improved b…
Perovskite solar cells (PSCs) have been attracting great research interests and attained remarkable progress since its debut in 2009. Remarkably, the power conversion efficiency (PCE) of PSCs has already surpassed other types of solar cells that have been researched over 20 years in the last 7 years. However, organic…
Two new C21 steroidal glycosides, cynataihosides E (1) and F (2), together with a known one, sublanceoside H2 (3), were isolated from Cynanchum taihangense. The aglycone of cynataihoside F (2) was also a new compound. Their structures were elucidated on the basis of NMR spectroscopic data, HR-ESI-MS analysis, and chem…
The effect of bombardment with energetic particles on the deep‐level spectrum of copper‐contaminated silicon wafers is studied by space charge spectroscopy methods. The p‐type FZ‐Si wafers were doped with copper in the temperature range of 645–750 °C and then irradiated with the 1015 cm−2 fluence of 5 MeV electrons at…
Periodic and molecular density functional theory calculations have been applied to elucidate the associative mechanism for hydrazine and ammonia synthesis in the gas phase and hydrazine formation on Co3Mo3N. We find that there are two activation barriers for the associative gas phase mechanism with barriers of 730 and…
Ni-W-P/Al 2 O 3 -LaCl 3 composite coatings were prepared by ultrasonic pulse electrodeposition using a N80 steel matrix. The structural features and other properties of the composite coatings were analyzed using metallographic measurements, micro-hardness measurements, scanning electron microscopy, X-ray diffraction,…
The Y3Al5O[Formula: see text] (YAG):Ce ceramic rods and single crystals were prepared by solid state reaction and optical floating zone method, respectively. The XRD results showed that the phases in the YAG:Ce ceramics are mixture of YAG phase and YAlO3 (YAP) phase. There is only a single YAG phase in the single crys…
The construction of silver (I) thiolate nanoclusters is challenging because they involve the assembly of multiple components. Anionic template method is a simple and effective method for the synthesis of silver (I) thiolate nanoclusters, especially for the control of their structures. In this mini review, we briefly s…
Researches of the last years have allowed to establish that the laws of deformation and fracture of bulk ultrafine-grained (UFG) and coarse-grained (CG) materials are various both in static and in dynamic loading conditions. The influence of average grain size on the yield stress, the tensile strength, and the compres…
In the study an industrial occupational setting was investigated in order to determine the workers exposure to the magnetic fields from induction ovens and to develop risk mitigation procedures to lower the exposure. Electromagnetic field measurements were conducted and the workers exposure to the electromagnetic fiel…
The influence of magnetic ordering on the stability of Ni–Mn–Ga(–Co–Cu) Heusler alloys is investigated using the first-principles exact muffin-tin orbital method in combination with the coherent-potential approximation. The paramagnetic (PM) state is described by disordered local moment approach. In stoichiometric Ni2…
OBJECTIVES: Small aortic annuli are challenging in aortic valve replacement. Prosthesis-patient mismatch, accompanied by high transvalvular gradients and small orifice area, is an often faced problem impairing postoperative outcome. The new TRIBIO bioprosthesis aims to enable enhanced haemodynamics, being increasingly…
Two furan end−capped dibenzo five−membered ring monomers, 2,8−bis−(furan−2−yl)−dibenzothiophene (DBT−Fu) and 2,8−bis−(furan−2−yl)−dibenzofuran (DBF−Fu) were successfully synthesized via Stille couple reaction. Corresponding polymers, P(DBT−Fu) and P(DBF−Fu), were obtained by employed the electropolymerization. The sur…
The area of use of aluminum and aluminum alloys is very wide and the future use of aluminum alloys is related to the further development of new alloys, but primarily with the production technology and processing. Recently addition master alloy AlCa10 is used with aluminum alloy for improving the technological properti…
InAlN dipole diodes were developed and fabricated on both (0001) Ga-Face and 0001¯ N-face oriented GaN on sapphire templates by molecular beam epitaxy. The orientation and direction of the InAlN polarization dipole are functions of the substrate orientation and composition, respectively. Special consideration was take…