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。
This work describes the use of proton radiography and continuum simulations to investigate the mechanics of a copper jet penetrating unconfined ALON® transparent ceramic. Use of proton radiography enabled characterization of the jet and ceramic material at 21 time steps, in situ, throughout the penetration process. Th…
The texture of powder cosmetics, such as "smoothness" and "moist feeling", is one of the most important properties for the usability assessment. In general, we rely upon the sensory evaluation for cosmetics. However, such subjective evaluation tends to be vague because of not only the lack of evaluators' skill but als…
Submicron particles comprising nanocrystallites of Gd0.1Ce0.9O1.95 (GDC), NiO–Gd0.1Ce0.9O1.95 (NiO–GDC), and La0.8Sr0.2CoO3 (LSC) were synthesized using ultrasonic spray pyrolysis in a reactor at 1,273 K for 13 s. Nitrates of the component metals were used as precursors and dissolved in pure water in stoichiometric am…
Blue-light excitable, green-light emitting Ba3(Sc1−xHox)4O9 phosphors were successfully synthesized in the single-phase form by a melt synthesis method for the first time. These phosphors show sharp green light emission under blue light (455 nm) excitation. The principal green light emission peak observed at 555 nm co…
Improvement of electrochemical property of K2V8O21, a stable phase of vanadium bronzes, was attempted by redox inactive metal ion doping. From the XRD pattern and lattice parameter change, it was confirmed that Ti and Nb can be exchanged with vanadium until 2 mol%. By doping 1 mol% Nb5+ to K2V8O21, the discharged capa…
Zinc oxide has been given much attention recently as it is promising for various semiconductor device applications.ZnO has a direct band gap of 3.3 eV, high exciton binding energy of 60 meV and can exist in various bulk powder and thin film forms for different applications.ZnO is naturally n-type with various structur…
Advanced engines can achieve higher efficiencies and reduced emissions by operating in regimes with diluted fuel-air mixtures and higher compression ratios, but the range of stable engine operation is constrained by combustion initiation and flame propagation when dilution levels are high. An advanced ignition technol…
Severe accident with core meltdown is a threat to the containment integrity. As Chernobyl and Fukushima accidents demonstrate, significant release of radioactive products into the environment can have severe consequences both for people's health and the country's economy. Severe accidents arc the focus of considerable…
Starting from the equations of motion of the reduced density matrix for a semiconductor slab excited by light and subject to an applied voltage, a derivation is given of the Drude-Lorentz photoconductance in terms of parameters which can be obtained from first principles calculations of electronic structure and dynami…
Aeshna vercanica sp. nov. is described and illustrated. The male holotype and four male paratypes were collected on 15-vii-2013 in the Hyrcanian forest of the Alborz Mountains, Mazandaran province, northwestern Iran. A specimen collected on 29-vi-2002 in the Talysh Hills, Lankoran area, Azerbaijan, also belongs to the…
We demonstrate that a suite of neutron scattering instruments can be installed on low power reactors from e.g. 0.1 to 1 MW thermal power, including a powder diffractometer, a Laue diffractometer, a neutron imaging station, and small angle scattering machine. For each of these instruments, we estimate the performance u…
Indium oxide is one of the basic oxides, and has been extensively studied due to its prominent applications in solar cells, optoelectronics, gas sensors and possesses some interesting chemical and structural peculiarities. In recent years, significant efforts have been made to fabricate these materials as nanosized pa…
The tight crude oil supply and its negative impacts on the environment have accelerated efforts towards the search for alternatives to the conventional petrochemical-derived plastics. Polylactic acid (PLA), a polymer produced from renewable resources has emerged as a potential substitute to the conventional synthetic…
Theoretical calculations have been performed to model the propagation kinetics and ionization behavior of methacrylic acid (MAA) from first principles. The p K a values of various COOH groups of chemical species with direct relevance to MAA polymerization have also been calculated. At a given temperature, syndiotactic…
This chapter starts with the importance of composite materials over single-phase materials and further explores the importance of natural fiber reinforced composites over synthetic fiber reinforced composites followed by chemical and physical modifications of the fiber surface to enhance the adhesion between the fiber…
This literature considers the major use of aluminium due to its superior property low density, ductility, electrical and thermal conductivity. Firstly important properties are find which explore use of aluminium in many industrial applications keeping the limitations in mind. So the composites materials fabricated by…
Experiments of MFC for treating liquids of potato, tomato and lettuce as well as potato cubes with different edge lengths of 3, 5 and 7 mm were conducted, and the differences in the removal of organic matter and electricity generation were evaluated. For all three vegetable liquids, organic matter contained was effect…
A front tracking finite difference method is developed for a two phase one dimensional classical Stefan problem. The method, to start with, requires two time step sizes needed for the front to move a fixed spatial distance each. Two equations are derived applying Green's theorem of vector calculus for two regions of t…
A sensor system for investigating (bio)degradationprocesses of polymers is presented. The system utilizes semiconductor field-effect sensors and is capable of monitoring the degradation process in-situ and in real-time. The degradation of the polymer poly(d,l-lactic acid) is exemplarily monitored in solutions with dif…
A symmetry analysis of monoclinic, orthorhombic, and trigonal M3X2-type superstructures that can be formed in strongly stoichiometric MX y compounds with B1 structure is carried out. Channels of order-disorder transitions MX y → M3X2 are determined. It is shown that, as temperature decreases, two physically admissible…