Materials Literature
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In this work, we used both experimental and density functional theory (DFT) calculation methods to examine the mechanism of CH 4 activation taking place on the Zn 2+ ion exchanged MFI-type zeolite (ZnMFI). The heterolytic dissociation of CH 4 on ZnMFI around 300 K was observed experimentally, causing the appearance of…
Nowadays, it is a great challenge to synthesize crystalline TiO 2 nanostructures using low‐temperature methods without annealing stage. Such an approach allows to perform functional and structural modification in the formed crystalline phase by thermally unstable compounds, such as biomaterials, MOF s, dye sets in sit…
Fluorescence is the most widely used technique to study the effect of pressure on biochemical systems. The use of pressure as a physical variable sheds light into volumetric characteristics of reactions. Here we focus on the effect of pressure on protein solutions using a simple unfolding example in order to illustrat…
In this article, we report the development of a biodegradable monetite [dicalcium phosphate anhydrous (DCPA), CaHPO4 ]/phosphorylated chitosan (p-chitosan) composite orthopedic cement. The cement pastes showed desirable handling properties, injectability, and washout resistance. The incorporation of p-chitosan powders…
To further improve heat insulation and mechanical properties, silica aerogels were impregnated into highly porous yttria‐stabilized zirconia ( YSZ ) ceramics with well‐distributed pores fabricated by tert‐butyl alcohol ‐based gel‐casting process and pressureless sintering. Pore size distribution, room‐temperature ther…
Abstract Self‐assembled TiO2‐B nanosheets have been successfully synthesized by a rapid, one‐pot, ionic‐liquid‐assisted solvothermal route under microwave irritation. By adjusting the reaction temperature, reaction time, and reactant concentration, the morphology and phase of the as‐formed TiO2‐B nanostructures can be…
Picrasma quassioides (P. quassioides) has been widely used as a traditional Chinese medicine for clearing fever and detoxification. Previous phytochemical studies have identified a novel dihydrobenzofuran-type neolignan, picrasmalignan A, isolated from the stems of P. quassioides. In the present study, the in vitro an…
The influence of alkali concentration, temperature, concentration of urea and KSCN on the shapes and sizes of wx corn starch precipitates (isolated via nanoprecipitation) were studied. A strong correlation was found between the molecular and hydrodynamic characteristics, determined by using asymmetrical flow‐field flo…
Results from experiments on long positive streamers in atmospheric air under lightning impulse voltage are presented. The length of the rod-plane gap is 57 cm. The peak voltages applied to the gap are +210–290 kV. The voltage and current are measured through a synchronized measurement system. The streamer diameters ar…
Sodium alginate (NaAlg) is considered to be a potential natural polymer for biomaterial applications, because of its hydrophilic properties that is capable to increase the swelling of hydrogels and biodegradable. This study describes the synthesis of a poly (acrylamide-co-acrylic acid) NaAlg superabsorbent hydrogels v…
A rare self-assembly behavior is observed in a hydrophilic monomer (4-vinylpyridine) (4VP) when polymerized in water with a hydrophilic initiator that results in the production of monodisperse polymeric nanoparticles in a single step. This behavior mimics the behavior obtained with the more commonly reported amphiphil…
The Na ‐ P 1‐type zeolite having a high cation‐exchange capacity ( CEC ) was obtained using the waste coal fly ash from thermal power stations and a 2 M NaOH solution at 100°C. The Na ‐ P 1‐type zeolite was formed with the reaction time of 6 h at 100°C, and its CEC value increased with an increase in the reaction time…
Accurate determination of copper in complex biological media such as cells is quite difficult, and an analytical strategy based on copper-modulated formation of core-shell gold nanorods is described. Selective and label-free sensing can be achieved by measuring the change in the localized surface plasmon resonance abs…
BACKGROUND: Cartilage repair is a challenging research area because of the limited healing capacity of adult articular cartilage. We had previously developed a natural, human cartilage extracellular matrix (ECM)-derived scaffold for in vivo cartilage tissue engineering in nude mice. However, before these scaffolds can…
In the present study, a surface layer of TiC-CNT hybrid compositecoating has been developed on low alloy steel (LAS) by using powder preplacement and tungsten inert gas (TIG) torch melting techniques.The weighed powder mixture with the content of 1.0 mg per millimeter square area and containing TiC-4wt. % CNT particle…
We establish the low-temperature phase diagrams of the spin-$1/2$ and spin-1 Kondo lattice models as a function of the conduction-band filling $n$ and the exchange coupling strength $J$ in the regime of ferromagnetic effective exchange interactions ($n\ensuremath{\lesssim}0.5$, $J/D\ensuremath{\lesssim}2$). We show th…
We report the first observation of room-temperature quantum-confined photoluminescence (PL) from low-dimensional Ge(1-x)Sn(x)/Ge superlattices (SLs) up to a high Sn content of 6.96%. Both direct and indirect emissions associated with the interband transitions between minibands in the conduction bands and valence band…
Nuclear chemistry represents a vital field of basic and applied research. This Introduction to Nuclear Chemistry describes the relevant parameters of instable atomic nuclei, the various modi of radioactive transmutations, the corresponding types of radiation including their detection and dosimetry, and finally the mec…
Functional smooth muscle engineering requires isolation and expansion of smooth muscle cells (SMCs), and this process is particularly challenging for visceral smooth muscle tissue where progenitor cells have not been clearly identified. Herein we showed for the first time that efficient SMCs can be obtained from human…
Heterobimetallic cores are important units within the active sites of metalloproteins but are often difficult to duplicate in synthetic systems. We have developed a synthetic approach for the preparation of a complex with a Mn(II)-(μ-OH)-Fe(III) core, in which the metal centers have different coordination environments…