Materials Literature
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Based on the analysis of the development trends of modern transport equipment the prospect of structural composite materials usage, for example CFRP structural, is shown. In this regard, the expediency of conducting research to improve the strength characteristics of these materials is established. It is shown that, d…
Within the model of delocalized atoms, it is shown that the parameter δT g , which enters the glasstransition equation qτ g = δT g and characterizes the temperature interval in which the structure of a liquid is frozen, is determined by the fluctuation volume fraction $${f_g} = {\left( {{{\Delta {V_e}} \mathord{\left/…
Low-agglomerated xerogels, ultrafine oxide powders with particle sizes of 12–20 nm, and uniform thin films with particle sizes of 8–14 nm are prepared in the CeO 2 –Y 2 O 3 system using liquid-phase low-temperature methods, namely via coprecipitation of hydroxides and cocrystallization of salts, sol—gel technology. A…
This work is being gingered by the rapidly increased menace of polymeric waste generated daily, their poor management and high industrial demand for conductive polymers. Five grams of the polymers: poly styrene, poly ethylene, poly propylene and nylon66 were doped with eight different concentrations of charcoal (0.00%…
Abstract Calcium pyrophosphate (CPP) was prepared by a simple precipitation method using avian eggshell waste as a low-cost alternative calcium precursor source. The synthesized CPP powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM/EDS), thermogravimetric analysis (TGA), and Fourie…
Carbon composite has well and truly joined the mainstream of aerospace construction, not least in the commercial aviation sector. Here, aircraft that are up to 50% by weight carbon are proving their worth as fuel-efficient carriers, polluting less and saving their operators money compared with previous-generation meta…
Abstract A compilation of Fe 3+ -bearing chlorite analyses is used: (1) to investigate the Alfree di-trioctahedral (AFDT) substitution 2Fe 3+ +□= 3(Mg,Fe 2+ ) in chlorite; and (2) to estimate the composition of a ferri-sudoite end-member (Si3Al)[(Fe 2+ ,Mg) 2 □Al]O 10 (OH) 8 within the chlorite solid-solution domain.…
The magnetic properties, namely the iron losses and the relative permeability, of SiFe electrical steel laminations after mechanical and laser cutting are studied. Mechanical cutting with guillotine shears and cutting by means of fiber and CO2 lasers are considered. The magnetic measurements are conducted on the Epste…
Conditions of mass transport to growing crystals have a considerable effect on the crystal size and quality. The reduction of convective transport can help improve the quality of crystals for X-ray crystallography. One approach to minimizing convective transport is crystallization in a microgravity environment, in par…
This study investigates graded porosity in nanowire arrays to realize a new graded refractive index mechanism that results in unprecedented broadband antireflection and extends the photodetection properties to cover the entire visible-light range. In this work, ZnO nanowires (NWs) are chosen as a model system to demon…
Cancer chemotherapy can benefit from the combination of different anticancer drugs. Here, we prepared doxorubicin (Dox)- and thioridazine (Thio)-coloaded methoxy poly(ethylene glycol)-poly(l-lactic acid) (MPEG-PLA) nanoparticles (NPs) for breast cancer therapy. These NPs have an average particle size of 27 nm. The dru…
A bicyclooxacalixarene cage with triangular prism structure was synthesized by a one-pot SNAr reaction. The structure of the oxacalixarene cage 1 was characterized by NMR, MS spectra, and X-ray crystal structure analyses. In the solid state, the molecular cage was assembled into an interlaced porous network structure.…
TiO2 filled Polypropylene (PP) nanocomposites were prepared with a single screw extruder and then by injection molding of the blends. Water absorption, density, mechanical properties, morphological characterization, FTIR analysis, and the thermal stabilities of the nanocomposites were investigated. The results showed…
Four new synthesised liquid crystalline compounds belonging to the homologous series of fluorinated biphenyl benzoate esters have been studied to compare their dielectric and electrooptic properties. Three of the studied compounds exhibited ferro- and antiferroelectric phases while one of them exhibited only one liqui…
Predicting crystallographic B-factors of a protein from a conventional molecular dynamics simulation is challenging, in part because the B-factors calculated through sampling the atomic positional fluctuations in a picosecond molecular dynamics simulation are unreliable, and the sampling of a longer simulation yields…
Nanomedicine is based on the fact that biological molecules behave similarly to nanomolecules, which have a size of less than 100 nm, and is now affecting most areas of orthopedics. In orthopedic oncology, most of the in vitro and in vivo studies have used osteosarcoma or Ewing sarcoma cell lineages. In this article,…
The phylogenetic position of the genera Rossithidium and Psammothidium was studied using the plastid gene rbcL. The genus Rossithidium is not an independent taxon and should be transferred to Psammothidium. Taxa from Psammothidium genus formed a sister, but independent clade to taxa with Achnanthidium. Our data has sh…
Recently, a growing interest has been seen in the development of T1–T2 dual-mode probes that can simultaneously enhance contrast on T1- and T2-weighted images. A common strategy is to integrate T1 and T2 components in a decoupled manner into a nanoscale particle. This approach, however, often requires a multi-step syn…
A model describing heterostructure solar cells based on zinc and copper oxides is developed. Seed layers of ZnO and CuO are synthesized by spray pyrolysis. To form a bulk heterojunction, ZnO nanorods are grown by hydrothermal synthesis. The morphological, electricaland optical properties of the fabricated structures a…
In this study, electromigration (EM) of interconnects (90 nm pitch) with airgaps was investigated using a combination of computational mechanics, analytical modelling, and EM experiments. EM experiments reveal that airgapped Cu lines without dielectric liner (non-capsulated) fail early by voiding in the EM tests due t…