Materials Literature
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Ice-covered FXBW-10/70 and FXBW-35/70 insulators were taken as specimen and tested in the artificial climate chamber,and based on the supposition that the influence of icing on the flashover voltage of composite insulators is in accordance with that of pollution,an equivalence relationship between the solid-layer meth…
The process of partial discharges(PDs) will be affected by electronegative gas.Using the void inside low density polyethylene (LDPE) as the object,we focused on the change of the partial discharge characteristics with the electrical aging time,and also on the effects of the partial pressure ratio of O2 and N2 as well…
Impact of the cutting edge condition on the results of oak wood milling. The study presents results of investigations dealing with the effect of wear of cutting edges for profile milling on oak wood (Quercus robur L.) surface roughness. The discussed experiments were carried out on a Weeke-Venture 3 processing centre…
Electron spin resonance (ESR) and wide angle X-ray diffraction (WAXD) measurements under the tensile deformation were carried out for H-NBR, NBR and SBR vulcanizates with varying cross-link densities to discuss on the changes of network structure during tensile deformation. The H-NBR vulcanizates showed a strain-induc…
In this paper, based on the equivalent transmission line model a method of designing left-handed metamaterials micro-structures is proposed, verified and analyzed. Firstly, according to the basic transmission line model with left and right-handed characteristics, we build a new left-handed model by analogy. Then accor…
In this paper, we measured distributions of two-dimensional magnetic properties in a three-phase induction motor model core with a newly developed small-sized vector hysteresis sensor called V-H sensor. Additionally, we analyzed distributions of vector magnetic properties in the model core by means of the finite eleme…
This paper presents the theoretical basis for the determination of the field of velocity of the free air stream flowing out of a cylindrical and two-gap skewed jet. Based on this, calculation of the air velocity distribution in the stream’s axis was carried-out. Good agreement was achieved between the values of theore…
Catalytic combustion of pollutants released from th e vehicular exhaust is one of the best methods to decrease their concentration before their release t o the atmosphere. The catalyst help to bring about the reduction of these pollutants at a much lower t emperature as compared to homogenous combustion reactions. In…
Se presenta una formulacin numrica basada en una combinacin de la mecnica de la fractura y de la mecnica del dao continuo para tratar el problema de la propagacin de una fisura en rgimen elstico, bajo el efecto de una accin mecnica definida por una carga esttica aplicada en el modo de fractura I y de una accin ambient…
Uncapped silver nanoparticles were synthesised using hitherto unexplored DC arc thermal plasma technique using Ar, He and mixture of Ar and He as plasma gases. Effect of change in plasma gases on the morphological properties of synthesised nanoparticles has been studied. XRD revealed formation of phase pure cubic silv…
A simple method was proposed to reduce the critical voltage of electrospinning and gain finer nanofiber. Beside the collector, a ground inducing plate was introduced into the electrospinning experiment setup, and the distance between spinneret and inducing plate can be adjusted. Under the same applied voltage, the ele…
In the framework of nuclear waste incineration and design of new generation nuclear reactors, experimental data on fission probabilities and on fission fragment yields of minor actinides are crucial to design prototypes. Transfer-induced fission has proven to be an efficient method to study fission probabilities of ac…
A transparent field emission device made from spray coating a single-wall carbon nanotube (SWNT) in -dimethylformamide (DMF) was developed. Highly crystalline SWNTs were successfully synthesized using a vapor phase method. Amorphous carbon and catalyst metal particles that remained in the SWNTs were removed using a pu…
In the present study we report the changes in the modified near-surface layer on NiTi shape memory alloy, caused by ion implantation as well as their influence on the structure and mechanical properties of this material. Experimental results of an inhomogeneous structure and tribological properties of implanted NiTi a…
Se evalu el efecto de la ultrafiltracin en el proceso de concentracin de gelatina comestible tipo B sobre el poder viscosante y gelificante del producto en polvo. Los resultados se compararon con los obtenidos por evaporacin. La gelatina se obtuvo de carnaza bovina entera (parte central de la dermis) y mezclas de sta…
Low-temperature emission of the singlet form of dioxygen 1 O 2 from the surface of the individual and mixed V and Mo oxides was detected by thermal desorption at 20–350°C. The amount of the desorbing 1 O 2 and the temperature range of 1 O 2 emission were found to depend on the composition of the catalyst; the low-temp…
Efficient oxonitridosilicate phosphors CaSi 2 O 2 N 2 : Eu for application in phosphor-converted light emitting diodes (LEDs) were synthesized from a ( Ca , Eu ) CO 3 @ SiO 2 core–shell template precursor using NH 3 gas as a reduction–nitridation agent. Scanning electron microscopy images show that the spherical shape…
Lithium nickelate and its lanthanum substituted compound have been successfully prepared by combustion synthesis process using LiNO 3 , Ni(NO 3 ) 2 .6H 2 O and La(NO 3 ) 3 .6H 2 O. Hexamine is used as fuel. The physicochemical properties of the powders were investigated by thermal analysis (TGA/DTA). The crystalline p…
The Cassie-Baxter state is a phenomenon in which a liquid rests on top of a textured surface with a gas layer trapped underneath the liquid layer. This gas layer introduces an effective shear free boundary that induces slip at the liquid-gas interface, allowing for friction reduction in liquid channel flows. Multiple…
The collagen coated nanoliposome (CCNL) have been prepared and characterized in order to develop a targeted and controlled drug delivery system. The zeta potential (ZP) measurement, Fourier transform infrared (FT‐IR) spectral and Scanning Electron Microscopy (SEM) and Cell viability assay data showed that the collagen…