Materials Literature
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Holographic three-dimensional (3D) display is a true 3D display technique, which can provide realistic image of a real object or a scene because holography has the ability to reconstruct both the intensity and phase information, i.e., the wave front of the object or scene. Therefore, it could allow the observers to pe…
International audience
Rechargeable sodium-ion batteries are promising next-generation energy storage devices due to the low cost and rich natural abundance of Na. However, it is still a great challenge to suppress phase changes of cathode materials in the high-voltage region. Unlike P-type single-phase composites, herein we present a facil…
本研究により，放射光蛍光X線分析（SR-XRF）が白色自動車ベースコート塗膜片の異同識別のための極めて有効な科学捜査手法であることが明らかになった．18種類の白色ソリッド自動車塗膜を収集し，ベースコート層の微細片を分析に用いた．材質分析のために顕微フーリエ変換赤外分光（FT-IR）分析を，微量元素分析のためにSR-XRFを行った．顕微FT-IR分析により，材質の違いに基づいて5グループに分類できた．SR-XRFにより，微細片からTi, Cr, Fe, Cu, Zn, Pb, Br, Sr, Zr, Nbを非破壊で検出することができた．試料は，Nbの有無により2グループに分類された．検出された微量元素は，異同識別の有用な指標となった…
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回折，X線微細吸収構造法，イメージング，光電子分光法などとして利用可能な放射光は，従来のX線機器に比べて，高輝度で指向性に優れるなどの特長がある．このため，鋼材の大気腐食や耐候性鋼さびの生成と構造に及ぼす合金元素の影響，ニッケル上のPbのアンダーポテンシャル析出現象，ステンレス鋼の不動態皮膜の非破壊解析など，様々な金属腐食現象研究に適用されている．一方，回折，小角散乱法，イメージングなどとして利用可能な中性子線は，透過力が強く，水や水素の検出能が高いなどのユニークな特性を有している．これより，耐候性鋼さびの乾湿繰り返しにともなうさび粒子サイズや体積率の評価や塗膜下腐食鋼材のふくれ内部での水の動きの直接観察などの金属腐食現象の研究に…
The magneto-optical spectra of ABC-stacked trilayer graphene are enriched by an electric field, providing a way to experimentally identify the stacking order of few layer graphene systems.
We prove the uniqueness of the self-similar profile solution for a modified Boltzmann equation describing probabilistic ballistic annihilation. Such a model describes a system of hard spheres such that, whenever two particles meet, they either annihilate with probability α∈(0,1) or they undergo an elastic collision wi…
In this chapter, we describe some of the main concerns when it comes to formulating emulsions. This includes the choice of ingredients, such as emulsifiers, oils, preservatives, and thickeners. This is done with a focus on how these ingredients can give the desired properties of the emulsions, such as texture, flavor,…
Nanotechnology belongs to the key innovative technologies for powder production. Ultrasonic spray pyrolysis is a versatile method for the formation of nanosized particles of metals, oxides and composites. This work deals with Ag, Cu and Au nanoparticles formed by ultrasonic spray pyrolysis using the horizontal and ver…
Time dependence of the parameters of a focal spot when performing the resonance focusing of a plane TE-wave with a dielectric microcylinder (refractive index n = 1.59) is investigated using the FDTD-method. It is shown that as the picosecond pulse passes through the cylinder, the focus width decreases, whereas the int…
The microstructure of a billet from the Al-Mg-Si system after processing by the method of Multi-ECAP-Conform was investigated and its mechanical and electrical properties were defined. The main feature of this method is the combination of two techniques of equal channel angular pressing (ECAP): pressing with parallel…
To date, ex-situ carbonation of ultramafic ores such as serpentinite has been studied extensively on the laboratory scale. In Australia, the Mineral Carbonation International (MCi) project was launched in 2013, with funding from the New South Wales (NSW) State and the Australian Federal Governments as well as an indus…
Experimental-computational investigation of dissipative factors in the process of impacting and penetrating of barriers made of woven aramid fiber composites is presented. Various types of 2D woven layers (13 types) are considered, as well as some characteristic types of transversal sewing as modifications of 3D weavi…
The corrosion inhibition of Pistachio Essential Oils (PEO) on carbon steel in 0.5 M H2SO4 was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results showed that PEO inhibited carbon steel corrosion in a 0.5 M H2SO4 solution and indicated that the inhibition…
International audience
The presence of microorganisms is often cause of concerns; in water systems, it can lead to disease transmission (e.g., Legionnaires’ disease), in addition to the risk of bacterially induced corrosion, and to inefficient heat transfer due to coating of surfaces with heavy microbial growth (biofilm). The former problem…
Over the course of 150 years since the construction of Japan's first cast iron bridge in 1868, Japan has become one of the most advanced countries in terms of steel structures. This advance is attributed largely to the contributions made by high performance steels. In Japan, steel material innovations have enabled pro…
Welding process variables play a significant role in determining the quality of a weld joint. The joint quality can be defined in terms of properties such as weld- bead geometry, mechanical properties and distortion. In this paper, an experimental study was conducted to investigate the influence of welding parameters…
O Brasil e o nono maior produtor mundial de arroz e o maior fora da Asia. A casca do arroz e o subproduto mais expressivo do processo de beneficiamento do arroz e seu volume representa cerca de 20% da massa do arroz em casca. Esta casca pode ser considerada uma materia-prima de baixo custo, de dificil reaproveitamento…