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Online since: August 2013
Authors: Zhi De Huang
The main research contents concrete working, mechanical properties and chloride ion permeability resistance at low water binder ratio and large amounts mineral admixture.
The system study on mineral admixtures influence on concrete properties has an important guiding for engineering construction.
The high amount mineral admixtures concrete work, mechanical properties and resistance to chloride ion permeability were systematic studied with water to binder ratio 0.4, relying on Qingdao Bay Bridge construction.
Mix design On the basis of cementitious material consumption 430kg/m3, water to binder ratio 0.4, series mix proportions with fly ash, slag powder were systematically studied for mineral admixtures on concrete workability, mechanical properties, and impermeability.
Prospect Mineral admixtures become indispensable in high performance concrete components preparation because of low carbon environmental protection, the price is relatively low and the concrete properties improvement.
The system study on mineral admixtures influence on concrete properties has an important guiding for engineering construction.
The high amount mineral admixtures concrete work, mechanical properties and resistance to chloride ion permeability were systematic studied with water to binder ratio 0.4, relying on Qingdao Bay Bridge construction.
Mix design On the basis of cementitious material consumption 430kg/m3, water to binder ratio 0.4, series mix proportions with fly ash, slag powder were systematically studied for mineral admixtures on concrete workability, mechanical properties, and impermeability.
Prospect Mineral admixtures become indispensable in high performance concrete components preparation because of low carbon environmental protection, the price is relatively low and the concrete properties improvement.
Online since: August 2013
Authors: Min Shang, Yi Guo Xue, Qiang Xu
Mechanism of bank collapse
Collapse of the reservoir bank is affected by many factors (water, soil, wind and other factors).
The physical and mechanical properties of rock and soil are part of the internal factors of bank collapse while water is the main external factor which causes bank collapse.
However, the influence degree of these factors is different because of the differences in bank slope structure.
The reservoir banks are made up of steep rock that has formed as a result of joints and fissures; the banks are easy to collapse along the opened fissure by the affects of many factors (water, wind, other external geological agent).
Appropriate treatment measures could be formulated after adequate considering and weighing different factors .
The physical and mechanical properties of rock and soil are part of the internal factors of bank collapse while water is the main external factor which causes bank collapse.
However, the influence degree of these factors is different because of the differences in bank slope structure.
The reservoir banks are made up of steep rock that has formed as a result of joints and fissures; the banks are easy to collapse along the opened fissure by the affects of many factors (water, wind, other external geological agent).
Appropriate treatment measures could be formulated after adequate considering and weighing different factors .
Online since: March 2022
Authors: Lu Lu, Han Deng, Zhi Peng Zhao, Bing Xu
Therefore, its melting point, magnetic, optical, thermal conductivity, conductivity and other characteristics are often different from the properties of the material in the overall state.
The one-dimensional structure of NW can show better mechanical properties; at the same time, the ordered and uniform structure also makes the mass transfer of each phase of electrode reaction more smooth, and becomes a good electron collector and has good conductivity [6].
In this paper, PtNWs were prepared by soft template method, and their properties were tested and characterized.
In the summary of literature and practical application, we can consider the influence of three factors on the synthesis of NWs.
In addition to the internal factors that affect the soft template synthesis of NWs, the external factors, that is, the rotation speed of the magnetic stirrer, can also affect the synthesis of NWs.
The one-dimensional structure of NW can show better mechanical properties; at the same time, the ordered and uniform structure also makes the mass transfer of each phase of electrode reaction more smooth, and becomes a good electron collector and has good conductivity [6].
In this paper, PtNWs were prepared by soft template method, and their properties were tested and characterized.
In the summary of literature and practical application, we can consider the influence of three factors on the synthesis of NWs.
In addition to the internal factors that affect the soft template synthesis of NWs, the external factors, that is, the rotation speed of the magnetic stirrer, can also affect the synthesis of NWs.
Online since: September 2014
Authors: A.S. Maznoy, Alexander Kirdyashkin, A.N. Guschin, S.S. Minaev, F.S. Palesskiy
Unique properties of Ni-Al materials make them useful in designing a new class of porous burners demonstrating improved characteristics.
Considering the main factors affecting the measurement accuracy, the relative error in determining PR using formula (1) is found to be d » (d21 +d22 +d23)0.5 » 8 %.
Compared to the flare combustion, during filtrational combustion of natural gas the increased radiative energy efficiency of the reaction products is due to the following factors: 1.
Properties of porous SHS materials for radiative burners Porous SHS materials for radiative burners Nonoxide compounds and compositions Ni-Al, Ni-Ti, Ti-C, Mo-Si, etc.
Sikka, Nickel and iron aluminides an overview on properties, processing, and applications, Intermatellics 4 (1996) 357-375 [8].
Considering the main factors affecting the measurement accuracy, the relative error in determining PR using formula (1) is found to be d » (d21 +d22 +d23)0.5 » 8 %.
Compared to the flare combustion, during filtrational combustion of natural gas the increased radiative energy efficiency of the reaction products is due to the following factors: 1.
Properties of porous SHS materials for radiative burners Porous SHS materials for radiative burners Nonoxide compounds and compositions Ni-Al, Ni-Ti, Ti-C, Mo-Si, etc.
Sikka, Nickel and iron aluminides an overview on properties, processing, and applications, Intermatellics 4 (1996) 357-375 [8].
Online since: December 2012
Authors: Pei Chao Chen, Bai Dong Zhao, Ya Long Zhang
In this paper, there are several factors that influence the sustainable development of building energy.
There are many factors that affect construction life.
The main factors are the following: City planning and government decision-making factors, Architectural design factors, Construction quality factors, Migration factors, Land value factors and land ownership factors.
In these factors, the most important factor is the city planning and the government decision-making factors.
We can also put the aggregate in the hydrochloric acid solution or glacial acetic acid solution, to improve the properties of recycled aggregate by the reaction between the acid and Calcium hydroxide of the cement.
There are many factors that affect construction life.
The main factors are the following: City planning and government decision-making factors, Architectural design factors, Construction quality factors, Migration factors, Land value factors and land ownership factors.
In these factors, the most important factor is the city planning and the government decision-making factors.
We can also put the aggregate in the hydrochloric acid solution or glacial acetic acid solution, to improve the properties of recycled aggregate by the reaction between the acid and Calcium hydroxide of the cement.
Online since: March 2017
Authors: Prihartini Widiyanti, Dian Marta Rizkawati, Izak R. Djony
The wound dressing which have good mechanical properties, non toxic, anti inflammation, anti infection and has potency to accelerate wound healing are important to be found.
One of the requirements of other wound closure is having the same mechanical properties to the skin.
A physical properties improvement is needed for the lack of mechanical properties in terms of tensile strength comparisons between human amniotic membranes and human skin, so that the human amniotic membrane can be more biocompatible with the human skin upon application as wound dressing.
Tensile Test Determination of the mechanical properties was done by cutting the membrane consistent with the shape of the tensile test bars.
Age dependence of mechanical and biochemical properties of human skin.
One of the requirements of other wound closure is having the same mechanical properties to the skin.
A physical properties improvement is needed for the lack of mechanical properties in terms of tensile strength comparisons between human amniotic membranes and human skin, so that the human amniotic membrane can be more biocompatible with the human skin upon application as wound dressing.
Tensile Test Determination of the mechanical properties was done by cutting the membrane consistent with the shape of the tensile test bars.
Age dependence of mechanical and biochemical properties of human skin.
Online since: July 2021
Authors: Husaini Husaini, Muttaqin Hasan, Abdullah Abdullah, Yulius Rief Alkhaly
Another factor affecting the compressive strength of RPC is the post-casting treatment which is known as the concrete curing.
Türkel, Mechanical properties of reactive powder concrete containing high volumes of ground granulated blast furnace slag, Cem.
Mubarak, Mix design and properties of reactive powder concrete with diatomaceous earth as cement replacement, IOP Conf.
Brouwers, Mix design and properties assessment of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC), Cem.
Hillemeier, Combined effect of fine fly ash and packing density on the properties of high performance concrete : An experimental approach, Constr.
Türkel, Mechanical properties of reactive powder concrete containing high volumes of ground granulated blast furnace slag, Cem.
Mubarak, Mix design and properties of reactive powder concrete with diatomaceous earth as cement replacement, IOP Conf.
Brouwers, Mix design and properties assessment of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC), Cem.
Hillemeier, Combined effect of fine fly ash and packing density on the properties of high performance concrete : An experimental approach, Constr.
Online since: November 2013
Authors: U. Hashim, Tijjani Adam, Azizan Aziz, Wei Wen Liu, Siang Piao Chai, Abdul Rahman Mohamed
Introduction
Carbon nanotubes [1] (CNTs) have attracted many scientists to study their extraordinary mechanical [2,3] and electronic [4–6] properties, and much efforts have been done to control their growth and properties [7–11].
The diameter of CNTs is an important property and is of interest for new applications that rely on diameter uniformity or the unique chemical properties of certain types.
Understanding the factors that affect the diameter may lead to a better understanding of the growth mechanism of the nanotubes.
In this paper, we point out an important factor that affects the diameters of CNTs.
This result implies that concentration of Fe3O4 affects the diameter distribution of CNTs.
The diameter of CNTs is an important property and is of interest for new applications that rely on diameter uniformity or the unique chemical properties of certain types.
Understanding the factors that affect the diameter may lead to a better understanding of the growth mechanism of the nanotubes.
In this paper, we point out an important factor that affects the diameters of CNTs.
This result implies that concentration of Fe3O4 affects the diameter distribution of CNTs.
Online since: April 2015
Authors: Nor Munirah Abdullah, Ramlah Mohd Tajuddin, Sharifah Abdullah
Since cellulose from different sources differs in properties (crystallinity, moisture content, surface area and porous structure, molecular weight, etc.) different properties of MCC obtained from different sources are expected.
The conditions of hydrolysis also affect the properties of the obtained MCC [11].
Kenaf Properties, Processing And Products.
Wilf, Membrane Types and Factors Affecting Membrane Performance.
Sain, Mechanical properties of biodegradable composites from poly lactic acid (PLA) and microcrystalline cellulose (MCC).
The conditions of hydrolysis also affect the properties of the obtained MCC [11].
Kenaf Properties, Processing And Products.
Wilf, Membrane Types and Factors Affecting Membrane Performance.
Sain, Mechanical properties of biodegradable composites from poly lactic acid (PLA) and microcrystalline cellulose (MCC).
Online since: December 2007
Authors: Ying Xue Yao, Y. Lu, R.H. Hong
Therefore the
thermal characteristics of motorized spindle become the main factor influencing machining quality,
and directly limit further increase of its rotate speed.
Xingqi Jiang, Professors of Zhejiang University in China, analyzed heat generation characteristics and heat transfer characteristics of high-speed, precision angular contact bearing, and calculated the relevant properties of actual motorized spindle.
A lot of complex factors cause the heat, include many kinds of friction, and those various frictions will become severe along with the increase of spindle's rotate speed, the heating value will also increase.
PLANE55 element which contains heat exchange properties is usually used in 3D space plane or axi-symmetric structure, and can be used to make thermal analysis of steady state and transient state in 2D space.
(5) The heat-affected zone of bearing increases along with rotate speed increasing
Xingqi Jiang, Professors of Zhejiang University in China, analyzed heat generation characteristics and heat transfer characteristics of high-speed, precision angular contact bearing, and calculated the relevant properties of actual motorized spindle.
A lot of complex factors cause the heat, include many kinds of friction, and those various frictions will become severe along with the increase of spindle's rotate speed, the heating value will also increase.
PLANE55 element which contains heat exchange properties is usually used in 3D space plane or axi-symmetric structure, and can be used to make thermal analysis of steady state and transient state in 2D space.
(5) The heat-affected zone of bearing increases along with rotate speed increasing