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Online since: August 2021
Authors: Megdi Eltayeb
Electrosprayed nanoparticles can protect environmental factors reactions, it is beneficial to capture nourishment enhance earlier to utilize in nourishments or refreshments.
Encapsulation prevents ethyl maltol from responding to environmental factors such as oxygen and water, thereby providing stabilized ethyl maltol, enhancing self-life and bioavailability.
Surface tension and viscosity are the important properties of the electrosprayed nanoparticle solutions that influence the development of nanoparticles in the electrospraying technique, both of which are affected by the concentration of electrosprayed nanoparticles [15].
The physical properties of ethyl maltol in the solvent-dissolved ethylcellulose and stearic acid (ethanol).
Zhang, Nanoparticles fabricated from bulk solid lipids: Preparation, properties, and potential food applications.
Encapsulation prevents ethyl maltol from responding to environmental factors such as oxygen and water, thereby providing stabilized ethyl maltol, enhancing self-life and bioavailability.
Surface tension and viscosity are the important properties of the electrosprayed nanoparticle solutions that influence the development of nanoparticles in the electrospraying technique, both of which are affected by the concentration of electrosprayed nanoparticles [15].
The physical properties of ethyl maltol in the solvent-dissolved ethylcellulose and stearic acid (ethanol).
Zhang, Nanoparticles fabricated from bulk solid lipids: Preparation, properties, and potential food applications.
Online since: August 2012
Authors: Xue Ying Wang, Dong Xu, Ya Jun Wu
The straw bale is a new type of envelope structural material; it is that straws (wheat straw) are tied with wire or nylon rope by mechanical stress in straw bale machine.
Then, the block waterproofing and thermal insulation properties have been significantly improved.
Plant fiber cement composite panels are also based on the building boards in rural areas, with excellent thermal insulation properties, and it can be widely used in rural residential constructions. 4.
The outside window should be inward-opening casement window in order to improve air tightness and thermal insulation properties, while improving the sound insulation and slip-off effect.
An important factor affecting the length of the process is the weak economy and low awareness of farmers and managers.
Then, the block waterproofing and thermal insulation properties have been significantly improved.
Plant fiber cement composite panels are also based on the building boards in rural areas, with excellent thermal insulation properties, and it can be widely used in rural residential constructions. 4.
The outside window should be inward-opening casement window in order to improve air tightness and thermal insulation properties, while improving the sound insulation and slip-off effect.
An important factor affecting the length of the process is the weak economy and low awareness of farmers and managers.
Online since: October 2011
Authors: H.H. Masjuki, A.M. Liaquat, M.A. Kalam, A. Rasyidi
Rasyidi1
1Department of Mechanical Engineering, University of Malaya, Kuala Lumpur, Malaysia
aliaquat2@yahoo.com
Keywords: WSD; co-efficient of frictio; jatropha oil; four-ball Tribotester
Abstract.
RESULTS AND DISCUSSION All the samples preparation and test are conducted at Engine Tribology Laboratory, Department of Mechanical Engineering, University of Malaya.
The figures show how the different percentages of JO affect on COF.
Viscosity Index (VI) Analysis Viscosity is the property used for identification of individual grades of lube oil and for monitoring the changes occurring in the lube oil while in service.
Haseeb, “Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant,” Wear, vol. 239(1), pp. 117–125, 2000.
RESULTS AND DISCUSSION All the samples preparation and test are conducted at Engine Tribology Laboratory, Department of Mechanical Engineering, University of Malaya.
The figures show how the different percentages of JO affect on COF.
Viscosity Index (VI) Analysis Viscosity is the property used for identification of individual grades of lube oil and for monitoring the changes occurring in the lube oil while in service.
Haseeb, “Effect of mechanical factors on tribological properties of palm oil methyl ester blended lubricant,” Wear, vol. 239(1), pp. 117–125, 2000.
Online since: April 2011
Authors: Jian Hua Wu, Yun Lan Liu
Its water reduction rate is 29%, air content is 4%.
2.2 The samples making and curing
Concrete is stirred by the positive mixing for 3 minutes, sample s are made according to " Standard for test method of mechanical properties on ordinary concrete " (GB / T 50081-2002).
But the high temperature will affect the concrete strength after 7d age.
In process of the steam curing ,the expansion of the water and air inside the concrete results in swelling stress, and micro-cracks occur in the interface area easily.These all affect the resistance to chloride ion penetration property of steam curing of concrete【14】. 5.
[8] Yang Huaquan , Dong Weijia , Wan Zhonghua.Test Study on Micro-properties of Concrete Mixed with Slag and Fly-ash[J].Journal of Yangtze River Scientific Research Institute, 2005,22(1):46-49
[11] Xu Zhifang,Lu Difen.Effects of FG on mechanical properties of cement-fly ash systems with steam curing[J].
But the high temperature will affect the concrete strength after 7d age.
In process of the steam curing ,the expansion of the water and air inside the concrete results in swelling stress, and micro-cracks occur in the interface area easily.These all affect the resistance to chloride ion penetration property of steam curing of concrete【14】. 5.
[8] Yang Huaquan , Dong Weijia , Wan Zhonghua.Test Study on Micro-properties of Concrete Mixed with Slag and Fly-ash[J].Journal of Yangtze River Scientific Research Institute, 2005,22(1):46-49
[11] Xu Zhifang,Lu Difen.Effects of FG on mechanical properties of cement-fly ash systems with steam curing[J].
Online since: February 2011
Authors: Jie Xu, Xin Hai He, Xiao Lei Su, Wan Cheng Zhou, Zhi Min Li, Fa Luo, Jun Bo Wang, Chong Fu
Preparation of N-doped Sic Whisker By Combustion Synthesis
Xiaolei Su1, a, Jie Xu1,b, Zhimin Li2, c, Xinhai He1, d, Junbo Wang1,e , Chong Fu1, f Wancheng Zhou3, g and Fa Luo3, h
1 College of Mechanical & Electronic Engineering, Xi’an Polytechnic University,
19 Jinhua Rd(S), P.R.
Therefore, as an important absorbing material the dielectric properties of SiC/N in the microwave range (X-band) were studied broadly[1-2].
However, the dielectric property of SiC/N whisker was better than that of SiC/N powder[2].
Moreover, It is interesting that the CS process can produce novel phases with unique properties in materials due to high thermal gradient and rapid cooling rate.
However, the incorporation of catalyst into the raw materials mixture affected phase forms, as well as the morphologies of synthesized product[6].
Therefore, as an important absorbing material the dielectric properties of SiC/N in the microwave range (X-band) were studied broadly[1-2].
However, the dielectric property of SiC/N whisker was better than that of SiC/N powder[2].
Moreover, It is interesting that the CS process can produce novel phases with unique properties in materials due to high thermal gradient and rapid cooling rate.
However, the incorporation of catalyst into the raw materials mixture affected phase forms, as well as the morphologies of synthesized product[6].
Online since: September 2007
Authors: R.A. Andrievski
The crystallite size and a particular size effect on the desorption properties of nanostructured
MgH2, synthesized by controlled reactive mechanical milling in a magneto-mill, is shown in Fig. 5
[22].
It was concluded that two factors (the refined powder particle size and the γ-MgH2 phase presence) are responsible for a substantial change in desorption properties of MgH2.
It seems that the crystallite size is not affected by the DSC desorption temperatures.
However, there is an additional factor, i.e. the different thickness of oxide film on hydride particles, which can change the desorption properties leveling the role of crystallite size.
Basic Properties (Eds.
It was concluded that two factors (the refined powder particle size and the γ-MgH2 phase presence) are responsible for a substantial change in desorption properties of MgH2.
It seems that the crystallite size is not affected by the DSC desorption temperatures.
However, there is an additional factor, i.e. the different thickness of oxide film on hydride particles, which can change the desorption properties leveling the role of crystallite size.
Basic Properties (Eds.
Online since: October 2023
Authors: Rungsima Yeetsorn, Sunanta Chuayprakong
Role of ratio between polymeric materials in physical, mechanical, thermal and weather resistant properties of the prepared films was elucidated.
The easy wrap film might be potentially one of the vital factors for Bio-Circular-Green Economic (BCG) Model which has been introduced and promoted around the world including Thailand.
Therefore, formula, properties and cost can be proposed to be the easy wrap film for item protection from dust and moisture. 4.
Sirivat, Effects of Foaming Agents and Calcium Carbonate on Thermo-Mechanical Properties of Natural Rubber Foams Polimeri, 35 (2014) 10-17
Kamaci, Effect of flow rate on wetting and optical properties of electrospun poly(vinyl acetate) micro-fibers.
The easy wrap film might be potentially one of the vital factors for Bio-Circular-Green Economic (BCG) Model which has been introduced and promoted around the world including Thailand.
Therefore, formula, properties and cost can be proposed to be the easy wrap film for item protection from dust and moisture. 4.
Sirivat, Effects of Foaming Agents and Calcium Carbonate on Thermo-Mechanical Properties of Natural Rubber Foams Polimeri, 35 (2014) 10-17
Kamaci, Effect of flow rate on wetting and optical properties of electrospun poly(vinyl acetate) micro-fibers.
Online since: September 2013
Authors: Wei Guang Li, Zhi Mi Zhou, Yao Gang Tian, Zhi Ren Tian, Hong Yu Shan, Qing Ye, Chang Yong Ye
Serious damage phenomena will appear soon in the pavement after the road is built and put into use, which has seriously affected the flight safety of the aircraft.
Its microscopic properties are researched profoundly and the microscopic mechanism of action is drawn further.
Then the test of mechanical properties and durability performance are conducted.
More important is that its durability is quite good: the abrasion resistance of the ultra-high-early strength concrete patching material in 3d age is quite similar to the one of common concrete in 28 days; in the stress ratio of 0.6, the fatigue number reaches more than 2 million times, and it is free from freezing and thawing cycle factors.
Layered structure may appear in Ca (OH) 2 together with the weakest link of the cleavage plane appearing, causing the physical properties of the pure cement lower than the mechanical properties of the super-early strength repair material cement.
Its microscopic properties are researched profoundly and the microscopic mechanism of action is drawn further.
Then the test of mechanical properties and durability performance are conducted.
More important is that its durability is quite good: the abrasion resistance of the ultra-high-early strength concrete patching material in 3d age is quite similar to the one of common concrete in 28 days; in the stress ratio of 0.6, the fatigue number reaches more than 2 million times, and it is free from freezing and thawing cycle factors.
Layered structure may appear in Ca (OH) 2 together with the weakest link of the cleavage plane appearing, causing the physical properties of the pure cement lower than the mechanical properties of the super-early strength repair material cement.
Online since: November 2014
Authors: Edward Chlebus, Jacek Reiner, Wojciech Cieszyński, Maksymilian Sidorowicz, Marcin Wiercioch
Furthermore, minor thermal distractions of the process may considerably affect the product quality.
Efficiency of its coupling is dependent on the laser beam parameters and on the surface condition, absorption, and the thermal properties of the processed material, as well as on the external factors and disturbances, e.g. laser-plasma interaction.
The thermal condition and thermodynamic properties are subject to change during the process; hence, for maintaining the output parameters, modification of independent parameters (e.g. intensity, fluence) is necessary.
Melt pool temperature is critical in determining the geometrical parameters of the clad, the depth of fusion, and material properties [18].
The use of the power control system also unified the material properties of the clad.
Efficiency of its coupling is dependent on the laser beam parameters and on the surface condition, absorption, and the thermal properties of the processed material, as well as on the external factors and disturbances, e.g. laser-plasma interaction.
The thermal condition and thermodynamic properties are subject to change during the process; hence, for maintaining the output parameters, modification of independent parameters (e.g. intensity, fluence) is necessary.
Melt pool temperature is critical in determining the geometrical parameters of the clad, the depth of fusion, and material properties [18].
The use of the power control system also unified the material properties of the clad.
Online since: November 2015
Authors: Naser Kabashi, Arton Dautaj, Cene Krasniqi, Ragip Hadri, Violeta Nushi
The flexural ductility affects the serviceability deflection of RC beams once flexural cracking take place.This paper focuses on the use of polypropilene fibres to improve the performance.
Its mechanical behavior is critically influenced by crack propagation.
The properties of fibers are presented in Table 2.
Table 2-Properties of fibers Fibers Type Production Length/ Diameter (mm) Density (gr/cm3) Tensile strength (N/mm2) PP Mapei Fiber NS12/NS18 Mapei/ITALY 12 to 18 0.91 400-500 Steel Straight-Hooked-end Inomix/GREECE 20-60/0.75-1 7.85 1100 In the test for flexural static loading, center points loading was applied to the specimen.
The reinforcement ratio using the different types of fibres results in different measurement of deflections, with different ages Fig. 7- Deflections of different sets on the 28 days Fig. 8- Deflections of different sets on the 56 days The mid-span cracks, mode of failure and deflections are the main factors indicated in servicibility of the examinated samples. 5.
Its mechanical behavior is critically influenced by crack propagation.
The properties of fibers are presented in Table 2.
Table 2-Properties of fibers Fibers Type Production Length/ Diameter (mm) Density (gr/cm3) Tensile strength (N/mm2) PP Mapei Fiber NS12/NS18 Mapei/ITALY 12 to 18 0.91 400-500 Steel Straight-Hooked-end Inomix/GREECE 20-60/0.75-1 7.85 1100 In the test for flexural static loading, center points loading was applied to the specimen.
The reinforcement ratio using the different types of fibres results in different measurement of deflections, with different ages Fig. 7- Deflections of different sets on the 28 days Fig. 8- Deflections of different sets on the 56 days The mid-span cracks, mode of failure and deflections are the main factors indicated in servicibility of the examinated samples. 5.