Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: December 2010
Authors: Jian Geng, Jian Sheng Shen, Wei Chen
The electrical properties of concrete are similar with electrolyte, and namely it belongs to the semiconductor [1].
There are many factors affecting concrete resistivity, such as compositions of raw materials, mix proportions and service condition, etc; but the most direct and effective method is adjusting the compositions of raw materials.
Now the researches about them are more focused on their effects on concrete workability, mechanical property, durability and micro-structure [6-9].
However there are still no systemic and deep studies about their effects on concrete electrical properties.
Table 1 lists the chemical composition and physical properties of cement and mineral admixtures.
Online since: July 2012
Authors: Wei Li, Qiang Han Fang
Study on behavior of ceramic phases in laser surface ceramic process Wei Li1,a , Qianghan Fang1,b 1School of Mechanical Engineering, Shandong Jiao’tong University, Ji’nan 250023, P.
In material design, the service property of the layer should be considered as well as the property matching between the matrix and ceramic phases, the size and composition of ceramic phases, interface bonding between the coating and matrix, etc. to develop the best property combination of composite components and produce excellent compound layer[1].
As far as material system is concerned, different material system will cause different dissolution degree of ceramic phases in the layer and affect the structure and property of the layer.
The above research results proved the effect of material system on the layer’s structure and property.
It’s affected by various factors such as material system, grain size and laser parameters, etc.
Online since: May 2014
Authors: Kento Ikeda, Naoki Karasawa, Yasuhiro Tanaka, Takashi Mizuguchi
Magnetic steel sheets with more suitable magnetic and mechanical properties are needed to prevent global warming.
The soft magnetic property of Si steel sheets is improved by increasing the Si content [1, 2].
This indicates that deformation-twinning behavior affects the stress–strain relationship.
This means that an additional microstructural factor should be considered.
(4) It is believed that the stress concentration, due to piled-up dislocations, during tensile deformation, significantly affects deformation twinning and brittle fracture.
Online since: February 2014
Authors: Mohd Syafiq Zulfakar, Wan Nasarudin Wan Jalal, Zainuddin Zalita, Sahbudin Shaari, Huda Abdullah
ZnAl2O4 properties can be used as dielectric material, sensor and Uv-transparent conductor [3].
ZnAl2O4 compound have a unique combinations of properties such as high mechanical resistance, low surface acidity and also high thermal stability where it can be used as high temperature material [4].
New addition compound of SiO2 into ZnAl2O4 will affected the surface morphology and electrical properties that will give an advantage for microwave application.
The energy bandgap of (1-x)ZnAl2O4 – xSiO2 samples tend to decrease due to the properties of SiO2 as dielectric material.
Tauc, Optical Properties of Amorphous Semiconductors, in: J.
Online since: March 2025
Authors: Muhammad Roil Bilad, Nik Abdul Hadi Sapiaa Md Nordin, Normi Izati Mat Nawi
The treatment of oily wastewater poses significant environmental and economic challenges, necessitating innovative solutions that combine effective separation technologies with enhanced antifouling properties.
Despite the permeability improvement, it is believed that the filtration system should be optimized by incorporating membranes with high antifouling properties, thus has become the objective of this study.
To improve the membrane antifouling properties, a 7wt% of tannic acid (TA, Sigma Aldrich) and 1 wt% of PVP (average Mw ~10,000) were added to the polymer solution containing 15wt% of PVDF.
Result and Discussion Membrane properties.
This improvement can be attributed to two factors: increased surface hydrophilicity and the presence of large surface pores.
Online since: April 2014
Authors: Pei Lu, Bao Gang Hou, Meng Jiao
The fluctuation of effective constituent extraction efficiency reflects the level of control in the production process which directly affects the quality of the products' stability, uniformity and the stability of preparation technology formula, this fluctuation is of important significance in maintaining consistency of TCM products’ properties [1].
Based on the alcohol extraction process of a kind of TCM injection, a relational model between the alcohol extraction process parameters and the quality factors of intermediates has been established in this paper.
Process parameters such as the ratio of solvent, insulating value, tank pressure, heating rate and holding time affect the fluctuations of extraction efficiency in different extent.
Extraction efficiency is the quality factor which is mainly focused.
Mechanical and electronic information. 2011, 29(311):1-5
Online since: January 2015
Authors: Ivan P. Chernov, Yury M. Koroteev, Leonid A. Svyatkin
Introduction The influence of hydrogen on the mechanical properties of structural materials is the subject of numerous studies due to technological problems caused by hydrogen embrittlement of metals.
It should be noted that a direct comparison of the results of ab initio calculations and experimental data for the diffusion barriers are not always correct since the experimental values are the result of many factors, the effect of which cannot always be taken into account in the calculations.
Krasauskas, Hydrogen influence on mechanical and fracture mechanics characteristics of zirconium Zr–2.5Nb alloy at ambient and elevated temperatures, Nucl.
Petrovic, Uranium–zirconium hydride fuel properties, Nucl.
Bulk properties, ActaMat. 50 (2002) 3513-3526
Online since: November 2013
Authors: Qin Li, Cheng Cheng Li, Chen Feng Zhou
It not only can give full play bearing properties of materials but also better meet the requirements of designing.
In the calculation process, The tension of bolts as the key to the whole flange designment will affect the number of bolts, thickness of flange and calculation of weld size.
In this paper, Bilinear Isotropic Hardening Plasticity(BISO)Von Mises Yield criterion is used to describe the mechanical properties of the steel and MISO for bolts(Fig.3).
Force’s correction factor of bolts is 0.62.
The formula of maximum moment in flange plate Mechanical properties of forging flange are simialr to rigid flange in steel poles.
Online since: June 2012
Authors: Hui Li Fan, Pei Pei Jia, Qin Yi, Jie Min Liu
The properties can be improved by special pre-coating paints [2].
Moreover, decorative finish aspects as color and structure and defined surface properties e.g. scratch resistance or anti-fingerprint properties are of increasing importance [3].
In order to determine the best ratio and composition for colored steel sheet, Table 1 was the seven factors mixed-level orthogonal testing.
Pigment binder ratio also had impact on the properties of adhesion and MEK-resistant.
The relatively high surface tension of the coating would affect the wetting of substrate, film properties, surface performance because the sheet metal was galvanized.
Online since: August 2019
Authors: S.Yu. Khashirova, Elina V. Khakyasheva, Albert S. Shabaev, V.Z. Aloev, Ruslan A. Shetov
Introduction Polyetheretherketone (PEEK) is a semi-crystalline polymer having a unique combination of high mechanical properties, heat resistance and chemical resistance [1-3].
In this paper, the effect of polyetheretherketone drying processes on its thermal properties is investigated.
In order to more accurately assess the effect of PEEK drying modes on its thermal properties, we used pyrolytic gas chromatography.
Receipt, properties and application, Izvestiya Vysshikh Uchebnykh Zavedenii, Seriya Khimiya i Khimicheskaya Tekhnologiya. 58-3 (2015) 3
Bazheva, Polyetherketones: Synthesis, Structure, Properties, Application (Review), Plastics. 8 (2013) 13-19
Showing 19291 to 19300 of 25965 items