Materials Literature
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The composition and design of mating faces in contacting mechanical seals are critical in preventing the media on one side of the face from successfully reaching the other. Different materials are employed, including mechanical carbon-graphite with resin or antimony impregnation, metals and hard coatings, aluminium ox…
Perovskite type Ca1−xDyxMn1−xNbxO3 ceramics (x≤0·10) are synthesised by solid state reaction. Microstructures are characterised, and the thermoelectric properties are evaluated between 300 and 1100 K. The samples obtained in this work have high relative densities. The electrical resistivity shows a typical metallic co…
The used catalytic converters contain small amounts of precious metals. Recovery of these metals is essential for environmental and economic reasons. This work presents a method of Platinum Group Metals (PGM) recovery from auto catalytic converters in which they are washed out by a liquid metal. The magneto-hydro-dyna…
Scientists at the UK's Science and Technology Facilities Council (STFC) have announced what they believe to be a game changer in the use of hydrogen as a ‘green' fuel for vehicles. Their discovery offers a viable solution to the challenges of fuel storage and cost, by using ammonia as a clean and secure hydrogen-conta…
A silica-rich material was generated from waste fly ash and it was subsequently characterized and experimented in ESBR compounds to find its suitability to be used as a filler for rubber compounds. This material contained 97.5% silica and 2.5% alumina. Characterisation of this material, designated as Modified Fly Ash…
OBJECTIVE: To investigate the role of type I collagen as an autocrine protein in promoting the growth lung cancer cells in a three-dimensional (3D) culture system. METHODS: Immunohistochemistry and RT-PCR were used to detect the expression of type I collagen in lung cancer specimens and 5 lung cancer cell lines. The l…
The gallosilicate type CDS-1 zeolite ([Ga]CDS-1) with CDO topology is prepared from the precursor of gallium-containing layered material ([Ga]PLS-1) by calcination via dehydrative condensation, and the corresponding [Ga]PLS-1 can be successfully synthesized from the mixture of protonated kanemite (H-kanemite), Ga2O3,…
A langatate single crystal with the initial composition La 3 Ga 5.5 Ta 0.5 O 14 , which is grown by means of Czochralski pulling along the 〈0001〉 direction in a weakly oxidizing medium, is investigated via X-ray and neutron diffraction techniques. The crystal is inhomogeneous in color and composition. The middle part…
Slow flow of the viscous liquid is a thought-provoking experiment that challenges students, academics and public to think about some fundamental questions in modern science. In the Queensland demonstration, the world-longest running experiment earning the Ig Nobel prize, one drop of pitch takes about 10 years to fall,…
ABSTRAK Sinung Khoirrudin. “PENGARUH VARIASI JUMLAH SALURAN MASUK TERHADAP STRUKTUR MIKRO, KEKERASAN, DAN KETANGGUHAN PENGECORAN PULLEY PADUAN ALUMINIUM Al-Si MENGGUNAKAN CETAKAN PASIR”. Skripsi, Surakarta: Fakultas Keguruan dan Ilmu Pendidikan. Universitas Sebelas Maret Surakarta, Juni 2014. Tujuan penelitian ini ada…
The relationship between the oxygen pressure, porosity, adhesion, and ion beam-assisted deposition (IAD) conditions for WO3electrochromic films prepared using an electron-beam (E-beam) system was investigated. The adhesion of thin films on the substrate by sole E-beam system is very weak. The best method is proposed t…
As prevailing copper interconnect technology advances to its fundamental physical limit, interconnect delay due to ever-increasing wire resistivity has greatly limited the circuit miniaturization. Single-walled carbon nanotubes (SWCNTs) bundle interconnects have emerged as a promising replacement material for copper i…
A brief overview of the design of femtosecond X-ray free-electron lasers (XFEL), characteristics of the emitted X-ray pulses, and potentialities of XFEL are presented. A concise analysis of the problems in modeling X-ray scattering patterns produced by ultraintense radiation sources is given.
Tungsten (W) is considered to be a promising candidate for plasma facing materials in fusion reactors because of its high melting point, high thermal diffusivity and low sputtering yield. To investigate the multiple hydrogen (H) diffusion behaviours at the W(001) surface, molecular dynamics simulations were used to st…
Structure of molecular complexes of zinc(II)tetraphenylporphyrin with 4-dimethylaminopyridine and 4-methoxyaniline has been studied by X-ray diffraction analysis. 4-Dimethylaminopyridine is coordinated almost perpendicular to the porphyrin cycle plane, whereas 4-methoxyaniline is coordinated at lower dihedral angle. T…
7050 aluminium alloy metal matrix composites reinforced with different weight fractions of Al3Ti particles were fabricated using an in situ synthesis method and subsequent rolling, solution and aging treatment. The effects of Al3Ti particle content and particle size on the microstructures and mechanical properties of…
Glass filled nylon composites (GFN) and hybrid graphene oxide reinforced glass filled Nylon nanocomposites (GO-GFN) are prepared by blending the required base materials in injection molding machine at processing temperature of 275°C. The specimens prepared are subjected to various mechanical property tests to reveal t…
Pure and rosemary-extract-doped hybrid nanostructure coatings have been generated using sols synthesized via acid catalyzed hydrolysis and condensation of methacryloxypropyltrimethoxysilane (TMSM) and tetraethoxysilane (TEOS) at the molar ratio of 1: 1, in combination with rosemary extract. Coatings have been deposite…
In this paper, high pure α-Al2O3 powder is prepared through active hydrolysis by using high pure aluminum as raw material . Using X-ray diffractometer, scanning electron microscope, laser particle size analyzer and ICP-OES to research the phase transitions, organizational structure, particle size distribution and the…
The structure, Young’s modulus defect, and internal friction in aluminum-germanium alloys have been studied under conditions of longitudinal elastic vibrations with a strain amplitude in the range of 10 −6 −3 × 10 −4 at frequencies about 100 kHz. The ribbon-shaped samples of the alloys with the germanium content from…