Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
BACKGROUND: The extensive use of different nanoparticles has raised great concerns about their occupational and biological safety. OBJECTIVE: The aim of this study was to evaluate the cytotoxic effect of zinc oxide nanoparticles (ZnO NPs) on viability of spermatozoa. MATERIALS AND METHODS: Semen samples were obtained…
The recent development of synthesis processes to assemble graphene sheets into porous three-dimensional (3D) macroscopic structures are reviewed, including our efforts on 3D graphene structures. Mechanisms for building 3D graphene architectures and their composite materials are also summarized. The functional systems…
Seaweed extracts of Sargassum cinereum was used as a reducing agent in the eco-friendly extracellular synthesis of silver nanoparticles from an aqueous solution of silver nitrate (AgNO3). High conversion of silver ions to silver nanoparticles was achieved with a reaction temperature of 100(°) and a seaweed extract con…
The influence of grain size on the tensile deformation and ductility for Mg–1.02% Zn (wt.%) alloy was investigated. The uniform elongation is nearly insensitive to the increase of grain size, but the post-uniform elongation is significantly decreased with increasing grain size. The high ductility in the fine-grained s…
BACKGROUND: Predictive modeling of the biological effects of nanomaterials is critical for industry and policymakers to assess the potential hazards resulting from the application of engineered nanomaterials. METHODS: We generated an experimental dataset on the toxic effects experienced by embryonic zebrafish due to e…
Mn doped ZnS samples with composition formula Zn1-xMn xS where x = 0.00, 0.02, 0.05 and 0.10 were prepared by chemical method. Samples characterized for its structural, morphological and optical properties by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR…
Multiwalled carbon nanotubes (MWCNTs) have attracted public attention not only for their potential applications in engineering and materials science but also for possible environmental risks. MWCNTs share similar properties with asbestos, a definite human carcinogen causing malignant mesothelioma (MM), in that they ar…
Particle size and metal species are important to both soil microbial toxicity and phytotoxicity in the soil ecosystem. The effects of CuO and ZnO nanoparticles (NPs) and microparticles (MPs) on soil microbial toxicity, phytotoxicity, and bioaccumulation in two crops (Cucumis sativus and Zea mays) were estimated in a s…
Metallic miniaturization techniques have taken metals to nanoscale size where they can display fascinating properties and their potential applications in medicine. In recent years, metal nanoparticles such as aluminium, silicon, iron, cadmium, selenium, indium and calcium, which find their presence in aluminosilicates…
In the binary composition-temperature phase diagram, the slope of the phase boundary is related to the temperature stability of the phases and/or properties. The slope of the tetragonal–rhombohedral morphotropic phase boundary (MPB) in the BaZrO3–(K,Na,Li)NbO3(BZ–KNLN) binary system has been adjusted using the third c…
OBJECTIVE: To study the biological effects of nanoscale copper oxide (nCuO), zinc oxide (nZnO), cerium dioxide (nCeO2) and their mixtures on Carassius auratus. METHODS: Juvenile fish (Carassius auratus) were exposed to aqueous suspensions of nCuO, nZnO, and nCeO2 (alone and in mixtures) at concentrations of 20, 40, 80…
BACKGROUND: Iron oxide nanoparticles are of considerable interest because of their use in magnetic recording tape, ferrofluid, magnetic resonance imaging, drug delivery, and treatment of cancer. The specific morphology of nanoparticles confers an ability to load, carry, and release different types of drugs. METHODS AN…
Multilayer (Na0.5K0.5)NbO3 (NKN) ceramics are considered promising candidates for lead-free piezoelectric actuators. The possibility of cofiring a nickel inner electrode in an NKN–LiF ceramic was investigated by evaluating the electrical properties and microstructures. The fabricated Ni inner electrode multilayer actu…
The idea of creating replacement for damaged or diseased tissue, which will mimic the physiological conditions and simultaneously promote regeneration by patients' own cells, has been a major challenge in the biomedicine for more than a decade. Therefore, nanofibers are a promising solution to address these challenges…
Although table tennis has a tradition lasting more than 100 years, relatively little is known about players' physiological requirements - especially during competition. In this review we discuss research studies that have led to our current understanding of how the body functions during table tennis training and compe…
Based on first-principles total-energy calculations, we investigate geometric and electronic structures of two-dimensional stable carbon allotropes comprised of pentagonal rings. We found that the sp 2 carbon sheet has a slightly higher total energy than C 60 and retains its planar structure up to 1000 K, indicating t…
The United States Fuel Cycle Research and Development Advanced Fuels Campaign has been given the responsibility to conduct research and development on enhanced accident tolerant fuels with the goal of performing a lead test assembly or lead test rod irradiation in a commercial reactor by 2022. The Advanced Fuels Campa…
Recent progress of research for graphene applications in electronic and optoelectronic devices is reviewed, and recent developments in circuits based on graphene devices are summarized. The bandgap—mobility tradeoff inevitably constrains the application of graphene for the conventional field-effect transistor (FET) de…
The magnesium alloy ZE41 encompasses a wide spectrum of applications as a structural material. An extremely high susceptibility to corrosion limits widespread utility of ZE41. In the present study it has been attempted to understand the corrosion behaviour of ZE41 alloy employing electrochemical techniques like Tafel…
Electronic structure and elastic properties of MgCu2, Mg2Ca and MgZn2 phases were investigated by means of first-principles calculations from CASTEP program based on density functional theory (DFT). The calculated lattice parameters were in good agreement with the experimental and literature values. The calculated hea…