Materials Literature
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This paper discusses the use of oil palm shell (OPS) as lightweight aggregate in lightweight concrete especially in the structure application has been proven by previous researches. As industrial waste material, OPS can be the alternative material to be used in the construction industry. With its advantage as heat res…
Copyright © 2014 V. I. Loganina. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The data on the effect of measurement error on the probability of makin…
In the present methodical study, FT-IR, FT-Raman and NMR spectra of the Propylbenzene were recorded and the fundamental vibrational frequencies were tabulated and assigned. The Gaussian hybrid computational calculations were carried out by HF and DFT (B3LYP and B3PW91) methods with 6-311+G(d,p) and 6-311++G(d,p) basis…
In this chapter, we present an overview of the effects of pressure on the crystallinestructureandphysicalpropertiesofoxygen-basedspinelsandotherrelated oxides. Recent X-ray diffraction and Raman spectroscopy studies are summarized. A brief description of pressure-driven transitions and post-spinel structures is also p…
A new type of chitosan/2-hydroxypropyl-β-cyclodextrin composite membrane have been developed for the encapsulation and controlled release of gallic acid. The morphology of the composite membrane was investigated by infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM), whereas swelling gallic acid and r…
For the problem that yarn breakage can not be found in time during the spinning process,this paper proposes a method to monitor the traveler of the spinning frame,which is supported by the light reflex rule.The system consists of an infrared sensor,a dual operational amplifier,a microcontroller and an LED indicating l…
In order to provide references for the study of insulator site pollution severity measurement, contribution ratio of slightly soluble salt to the pollution layer conductivity and pollution flashover voltage, we studied saturated absorption of water quantity of the single cap and pin suspension glass, porcelain insulat…
Leaching of cement-based materials changes its properties such as a reduction in pH, an increase in porosity and transport properties and a detrimental effect on properties related to long-term durability. Therefore, a better understanding of leaching process is important including the relevant long-term effects for c…
This paper describes the insulating properties of insulation paper composited with nanoAl2O3filler.The hand-sheets of insulating paper with different mass fraction of nano-Al2O3were prepared,and the performance of these hand-sheets which were immersed in oil under vacuum condition was tested.Results showed that the po…
As one of the most important application for rare earth, the rare-earth permanent magnet material, which closely relates to people's daily life, is an important fundamental functional material to support modern society. For recent ten years, the average annual growth rate of sintered Nd-Fe-B magnets output is 20% for…
In order to study the tensile failure characterization of coal under impact loading,the split Hopkinson pressure bar was applied in the test of dynamic Brazilian disc split tension test of coals. The effects of impact velocity and bedding plane in the coals on the dynamic failure parameters,such as tensile strength,fa…
Compared with the impulse current method, the ultra-high frequency(UHF) is more suitable for online monitoring and detecting partial discharge(PD) signals. Hence we designed a sensor of rectangular planar spiral antenna for detecting PD in gas insulation substations(GISs), which could expediently receive the electroma…
The research results of algae in the Nine Plateau lakes in Yunnan were reviewed. The questions and suggestions were pointed out in respect of environmental protection.
Through coupling hydrodynamics and electrostatics, a phase field method based on Cahn-Hilliard formulation was used to predict the deformation and breakup of dispersed phase droplets in a uniform electric field. The distribution of charge density, electric field strength and electric field force on the droplet surface…
Experiments have been conducted to investigate the effect of the degree of plastic deformation on the electrical resistance and thermal conductivity of Al-Mg-Si (6063) alloy. Thirty six samples of the 6063 alloy were used in all for the experiments (three samples constituted a group and twelve groups were instituted i…
The characteristics of pollution accumulation on naturally polluted insulators are fundamental for drawing pollutant distribution maps for power systems. Hence, taking some insulator strings on Zhejiang overhead transmission lines as samples, we investigated the natural pollution accumulation of insulators. Using stat…
To promote the detection sensitivity of the electric field mapping method, we set up an experimental system based on electro-optic electric field sensors for the defect detection of composite insulator. Then we performed simulative defect detection experiments and got the axial electric field distribution with depress…
The tungsten rod with a purity of 99. 955% was purified by using a 250 kW electron beam melting furnace and the morphology,purity and micro-hardness of the raw tungsten rod and melted tungsten ingot were observed and measured by scanning electron microscopy( SEM),inductively coupled plasma atomic emission spectrometry…
In this paper, a general linear time-varying multiple-axis (LTVMA) vibration model of shield tunnel boring machine (TBM) cutterhead driving system is established. The corresponding multiple inputs and multiple outputs (MIMO) state-space model is also presented. The linear vibration model is analysed, and the vibration…
Non-woven hybrid meshes based on poly( l -lactide- co - d,l -lactide) ( dl -PLA) and β-tricalcium phosphate (β-TCP) were fabricated and comprehensively characterized. Stock suspensions of β-TCP powder in dl -PLA acetone solutions were used for the electrospinning process. Structure, morphology and thermal properties o…