Materials Literature
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This paper uses ALE algorithm to develop a numerical model of breaking rock under high pressure water jet,in consideration of rock in a state of high ambient pressure.The simulation results show that damage evolution speed along axial direction of rock under high ambient pressure is lower than rock without ambient pre…
In water-cooled nuclear reactors, various species are present in the coolant, either in ionic solution, or entrained as very fine particles. Most arise from corrosion of primary circuit surfaces, or from chemicals, such as boric acid, lithium hydroxide, zinc and hydrogen, deliberately added to the coolant. These mater…
The authors proposed double-layer-type environmentally friendly lubricants, which were composed of an undercoat superior in adhering to a material and an overcoat superior in reducing the friction between the material and the die. The performance of these lubricants for cold forging was evaluated by the ring compressi…
The solvent-based paint has been changed into a water-based paint and higher non-volatile paint because of environmental problems. In addition, the paint film formation process was shortened such as the wet on wet process. In this paper, we measured film formation process using the electric field tweezers in open syst…
In order to reduce the nonlinear hysteresis of piezoceramic actuators,a sliding mode control scheme based on Preisach inverse compensation was proposed in this paper.Firstly,an inverse Preisach model of the hysteresis was built by using the sorting taxis realization method.Then the inverse model was connected in serie…
Link chains are widely used in many different sectors of industry, for example in hoist applications, marine applications, manure chains in agricultural applications, snow chains for cars or even as a bicycle lock. A more specific application is the tickler chain, where the link chain is used to drag over the seabed i…
Phosphorus ions are implanted into nanocrystalline diamond (NCD) films followed by being annealed at different temperatures. The results show that the samples exhibit good n-type conductivity when annealing temperature is increased to 800 ℃ and above. Raman spectroscopy and electron paramagnetic resonance measurements…
The susceptibility of MAX phases to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g. TiCx) or binary nitride (e.g. TiNx), primarily through the sublimation of A-elements such as Al or Si, which results i…
We have studied the chemical and mineralogical composition of different coal fly ash samples, collected as byproducts from thermal power plants. With the addition of magnesium oxide (MgO), the percentage of mullite increased when the fly ash samples were sintered at 1600 m C. X- ray diffraction (XRD) results revealed…
The biopolymer chitosan was chemically modified by grafting polyacrylamide in a homogeneous aqueous phase by using ceric ammonium nitrate as the initiator and in the presence of N, N-methylene-bis-acrylamide as a cross linking agent. The graft copolymerization of acrylamide onto chitosan was investigated using ceric a…
Vogel-Fulcher law, traditionally applied to describe dispersion of dielectric permittivity in relaxor ferroelectrics, requires introduction of two different relaxation mechanisms above and below freezing temperature correspondingly. Extending distribution function of relaxation times, previously known for low-temperat…
The dynamics and structure of phytoplankton was studied in three nursery fishponds periodically fed with treated household sewage and wastewater from a fruit and vegetable processing plant. The ponds differed with respect to the availability of biogenic compounds (mostly nitrogen). It was found that total phytoplankto…
A novel block ionomer complex micelles as drug carrier is developed utilizing self-assemble of poly(ethylene glycol)-block-poly(acrylic acid) (PEG-b-PAA) and cadmium chloride. This micelles are characterized to be have good bio-compatibility, hydrophilicity, passive targeting and sustained slow release property which…
L’objectif de cette communication réside dans la compréhension et l’analyse des valeurs du module d’indentation M⟨hkl⟩ déterminé par la méthode de rigidité en continue (CSM) dans le cas de matériaux fortement anisotropes et/ou actifs tels que les ferroélectriques ou les alliages à mémoire de forme. Plusieurs exemples…
The electrochemical behavior of passive films formed on AISI 321 has been examined using electrochemical impedance spectroscopy. AISI 321 is characterized by high interfacial impedance, thereby illustrating its high corrosion resistance. Results showed that the interfacial impedance and the polarization resistance ini…
The paper presents a continuation of work on determining an index of thermal comfort. A Relative Thermal Comfort Index (RTCI) has been elaborated for fabrics designed for winter clothing. Two versions of the index have been suggested: RTCIWI - used to evaluate textiles in windless conditions (Winter Indoor) and RTCIWO…
The climate implications of technologies that capture CO2 to produce transportation fuels (CCTF) are investigated by studying two examples: Biodiesel from microalgae and Sandia National Laboratory’s S2P process. Simple performance and economic models for each technology are examined in the context of a bifurcated–“pre…
Electrospinning is a scientifically attractive spinning technique, since it can produce fibers with the diameters ranging from the sub-micron to nano dimensional scale. The fiber diameters and their standard deviation primarily depend on the polymer solution properties and electrospinning process variables. Silk seric…
We have resolved the enantiomers of a series of chiral modified metallophthalocyaninato complexes of nickel bearing alkoxy groups at the 14 and 28 positions on what would otherwise be a normal phthalocyaninato ligand and conforming to the general formula [14,28-(RO)(2)Pc]Ni(ii), where R = Me, Et, or n-Pr. The complex…
The electronic structure and magnetic states in the heterometallic hexanuclear complex Mn 4 II Fe 2 III (μ4-O)2(Piv)10 · MeCN4 have been studied by X-ray photoelectron spectroscopy (XPS). The substitution of two Mn atoms for two Fe atoms in the hexanuclear complex was found to have an effect on the patterns of iron an…