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Online since: March 2025
Authors: Ibrahim Abbas
Studying the optical properties and characterization of the synthesised CdO NPs was a fascinating endeavour.
Regarding the matter above CdO, oxides of elements and metals are highly intriguing due to their distinct composition and specialized structure, which allows for the manipulation of their significant mechanical, thermal, optical, and electrical properties [20,22].
This is done by studying their optical properties, represented by the energy gap and absorption spectrum, as well as their structural properties through X-ray diffraction (XRD) analysis of the synthesized nanoparticles.
Several factors play an essential role in changing the colour of deionized water, including the laser parameters used, such as wavelength, pulse duration, and intensity, which significantly affect the extent of colour change and its effect on cadmium absorption.
All of these factors play a role in cadmium's absorption of the incident laser energy, which ultimately leads to a change in the colour of the water in the beaker.
Regarding the matter above CdO, oxides of elements and metals are highly intriguing due to their distinct composition and specialized structure, which allows for the manipulation of their significant mechanical, thermal, optical, and electrical properties [20,22].
This is done by studying their optical properties, represented by the energy gap and absorption spectrum, as well as their structural properties through X-ray diffraction (XRD) analysis of the synthesized nanoparticles.
Several factors play an essential role in changing the colour of deionized water, including the laser parameters used, such as wavelength, pulse duration, and intensity, which significantly affect the extent of colour change and its effect on cadmium absorption.
All of these factors play a role in cadmium's absorption of the incident laser energy, which ultimately leads to a change in the colour of the water in the beaker.
Online since: August 2015
Authors: Nambi Muthukrishnan, S. Muniraj
One of the micro alloying elements Nb has effect on the mechanical properties of heat-treated parts .
Lead addition to steel improves the machinability and mechanical properties.
But the exchangeable elements affect the mechanical properties and productivity.
This research concluded that the minimized MnS size and isotropic distribution in the steel had good strength, mechanical properties as well as machinability.
Fig.1 shows the microstructure of the specimen with magnification factor 250 x MAS Alloy % C %Cr %Si %Mn % Ni %Cu %Mb %Zn %Ti %V % Fe 38MnSiVS5 0.41 0.002 0.40 1.38 0.001 0.08 0.02 0.08 0.05 0.18 Bala-nce Table 1.
Lead addition to steel improves the machinability and mechanical properties.
But the exchangeable elements affect the mechanical properties and productivity.
This research concluded that the minimized MnS size and isotropic distribution in the steel had good strength, mechanical properties as well as machinability.
Fig.1 shows the microstructure of the specimen with magnification factor 250 x MAS Alloy % C %Cr %Si %Mn % Ni %Cu %Mb %Zn %Ti %V % Fe 38MnSiVS5 0.41 0.002 0.40 1.38 0.001 0.08 0.02 0.08 0.05 0.18 Bala-nce Table 1.
Online since: July 2015
Authors: Ruey Yi Lee, Chang Wei Lu, Szu Han Wu, Hung Hsiang Lin, Wen Hsiu Chung, Jing Kai Lin, Yung Neng Cheng
The results reveal that, the operating temperature is the most crucial factor to the stack performance.
The relatively larger slope of S/N ratio caused by levels represents the more important of factor and higher S/N ratio expresses the better level.
Therefore, the results of plots indicate the operating temperature is the most critical to the power output and the anode flow rate is the major factor to the electrical efficiency.
The results reveal the operating temperature remarkably affects the power performance.
Liu, High-temperature mechanical properties of a glass sealant for solid oxide fuel cell, J.
The relatively larger slope of S/N ratio caused by levels represents the more important of factor and higher S/N ratio expresses the better level.
Therefore, the results of plots indicate the operating temperature is the most critical to the power output and the anode flow rate is the major factor to the electrical efficiency.
The results reveal the operating temperature remarkably affects the power performance.
Liu, High-temperature mechanical properties of a glass sealant for solid oxide fuel cell, J.
Online since: August 2011
Authors: Li Wen Wang, Zhi Wei Xing, Bin Chen
Finally, some simulations on the influence factor of deicing process are implemented.
We suppose that the physical property of wing material is regular and the temperature on the any part of wing is identical, and the mass lose because of evaporation is ignored.
The basic model parameters such as material thermal property, size of wing and icing parameters are listed in Table 1.
The influence factors on deicing process were researched by simulation.
Physical Properties of Aircraft De-icing and Anti-IcingFluids[R].
We suppose that the physical property of wing material is regular and the temperature on the any part of wing is identical, and the mass lose because of evaporation is ignored.
The basic model parameters such as material thermal property, size of wing and icing parameters are listed in Table 1.
The influence factors on deicing process were researched by simulation.
Physical Properties of Aircraft De-icing and Anti-IcingFluids[R].
Online since: June 2010
Authors: Hang Gao, Xiao Ping Li, Zi Wen Zheng, Yi Fan Dai, Hao Feng Chen, Gui Lin Wang
A Vacuum Sucking Approach to Preventing Chips from Attaching to
Machined Surface in Cutting of KDP Crystals
Ziwen Zheng1,2,a, Haofeng Chen1,2,b
, Yifan Dai
1,c
, Hang Gao
3,d,
Guilin Wang1,e and Xiaoping Li2,f
1
Department of Mechantronical Engineering and Automation,
National University of Defense Technology, China
2
Department of Mechanical Engineering, National University of Singapore, Singapore
3
Dalian University of Science and Technology
a
zzwxj@sohu.com, bchenhf-nudt@hotmail.com, cdyf@nudt.edu.cn, dhanggao@sohu.com,
ewgl@nudt.edu.cn, fmpelixp@nus.edu.sg
Keywords: KDP crystal; Ductile mode cutting; Preventing chips; Vacuum sucking
Abstract.
Researcher Chen M.J. analyzed critical cutting condition for brittle-ductile transition of KDP crystals in ultra-precision machining, he stated the mechanical characteristics of KDP crystal anisotropy, the tool rake angle, and cutting parameters are main factors for ductile cutting KDP crystals [4, 5].
The Influence of Chips on 'Fogging' of Crystals Fogging of the crystal surfaces was the key factor influencing the efficiency of KDP frequency conversion arrays on the laser system.
Other cutting parameters such as feed rate and depth of cut had some influence on the removal of chip, but are not key factor for removal of chip.
[2] Ma Encai: Research on Mechanical Properties of KDP Crystal in Ultra-precision Machined Surface (Harbin Institute of Technology Publications, China 2006)
Researcher Chen M.J. analyzed critical cutting condition for brittle-ductile transition of KDP crystals in ultra-precision machining, he stated the mechanical characteristics of KDP crystal anisotropy, the tool rake angle, and cutting parameters are main factors for ductile cutting KDP crystals [4, 5].
The Influence of Chips on 'Fogging' of Crystals Fogging of the crystal surfaces was the key factor influencing the efficiency of KDP frequency conversion arrays on the laser system.
Other cutting parameters such as feed rate and depth of cut had some influence on the removal of chip, but are not key factor for removal of chip.
[2] Ma Encai: Research on Mechanical Properties of KDP Crystal in Ultra-precision Machined Surface (Harbin Institute of Technology Publications, China 2006)
Online since: August 2013
Authors: Xian Zhang Ling, Feng Zhang, Yong Cheng Yan, Jia Hui Wang
As the research region locates on the Hunhe fault, the mechanical property of fault zone which can significantly affect the stability of open pit mine slope and the deformation of the petroleum factory is necessary considered.
The main factors of the interface model are the internal friction angle, cohesion, dilation angle, normal stiffness and shear stiffness, compressive strength and shear strength.
Meantime, the angle of slope toe can be slow down, which conducive to the increment of safety factors.
(1) The interface model of fault zone and surrounding rock can effectively simulate the open-closing and sliding mechanical properties of main fault F1 and other branch fault during excavation and backfilling
The main factors of the interface model are the internal friction angle, cohesion, dilation angle, normal stiffness and shear stiffness, compressive strength and shear strength.
Meantime, the angle of slope toe can be slow down, which conducive to the increment of safety factors.
(1) The interface model of fault zone and surrounding rock can effectively simulate the open-closing and sliding mechanical properties of main fault F1 and other branch fault during excavation and backfilling
Online since: April 2022
Authors: Aqsa Akhtar, Yigao Zhao, Nauman Khalid, Maryam Said Alsaidi, Umayma Al Shibli, Mohsin Usman Qureshi
This research was conducted to examine different factors that may affect calcium carbonate precipitation by urea hydrolysis.
It was concluded that at the concentration, 2.5 g can be proved best for the CaCO3 precipitation by keeping all other factors constant.
Recommendations This study can be extended further by determining the inhibitor factors that could affect calcium carbonate precipitation.
Nakamura, Purification and properties of urease from the leaf of mulberry, Morus alba, Phytochemistry. 53 (2000) 325–330. https://doi.org/10.1016/S0031-9422(99)00521-X
Zhang, Factors Affecting Improvement of Engineering Properties of MICP-Treated Soil Catalyzed by Bacteria and Urease, Journal of Materials in Civil Engineering. 26 (2014) 04014094. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001013.
It was concluded that at the concentration, 2.5 g can be proved best for the CaCO3 precipitation by keeping all other factors constant.
Recommendations This study can be extended further by determining the inhibitor factors that could affect calcium carbonate precipitation.
Nakamura, Purification and properties of urease from the leaf of mulberry, Morus alba, Phytochemistry. 53 (2000) 325–330. https://doi.org/10.1016/S0031-9422(99)00521-X
Zhang, Factors Affecting Improvement of Engineering Properties of MICP-Treated Soil Catalyzed by Bacteria and Urease, Journal of Materials in Civil Engineering. 26 (2014) 04014094. https://doi.org/10.1061/(ASCE)MT.1943-5533.0001013.
Online since: May 2012
Authors: Yan Zhang, Shun Xu
The property and quality of the paper machine affect the quality of the presswork directly.
The sliding factor is, there is also relative sliding between the string band and the drive roller with string band, the sliding factor of which is .
(in Chinese) [4]Qiu Xuanhuai, Mechanical design .
Beijing: Mechanical Industry Press, 2003.
Mechanical parts manual .
The sliding factor is, there is also relative sliding between the string band and the drive roller with string band, the sliding factor of which is .
(in Chinese) [4]Qiu Xuanhuai, Mechanical design .
Beijing: Mechanical Industry Press, 2003.
Mechanical parts manual .
Online since: April 2015
Authors: He Xin Chen, Lei Xu, Shi Da Zheng, Chun Fu Guo, Jiang Long Yi, Kai Wang
For the welding technology conditions, the weld heat input is the aggregative indicator to response the welding current, voltages and speeds, as is one of the most important factors to decide the combination properties of the welding beads [3].
Table 1 shows the chemical composition of 921A steel, and Table 2 shows its mechanical properties.
For this reason, it may be considered that there is no galvanic effect, as to improve the anti-corrosive properties of the deposited metals [9].
Under the functions of those complex factors, the deposited metals welded at 20 kJ/cm presents the poorest anti-corrosive properties compared with the other two deposited metals welded at 10 kJ/cm and 15 kJ/cm.
Nath, Mechanical and corrosion behavior of plain low carbon dual-phase steels.
Table 1 shows the chemical composition of 921A steel, and Table 2 shows its mechanical properties.
For this reason, it may be considered that there is no galvanic effect, as to improve the anti-corrosive properties of the deposited metals [9].
Under the functions of those complex factors, the deposited metals welded at 20 kJ/cm presents the poorest anti-corrosive properties compared with the other two deposited metals welded at 10 kJ/cm and 15 kJ/cm.
Nath, Mechanical and corrosion behavior of plain low carbon dual-phase steels.
Online since: August 2016
Authors: Rastislav Ďuriš, Eva Labašová, Vladimír Labaš
To design and to dimension the structural elements of the machines (e.g. shaft), it is necessary to know the fundamental mechanical properties of materials, such as modulus of elasticity or shear modulus.
Simple twist The course of shear stress in the cross-section of the component is affected by the shape of the component.
Figure 3 shows the course of shear stress for circular and hollow circular cross-section and basic properties of sections are shown in Table 1.
Properties of cross-sections d D d Jp πd432 πD4-d432 Wk πd316 πD4-d416D In practice, when dimensioning the constructions, we are interested in the extreme values of stresses.
Summary The contribution deals with determination of the shear modulus for rods with circular and hollow circular cross-sections with the unknown material properties.
Simple twist The course of shear stress in the cross-section of the component is affected by the shape of the component.
Figure 3 shows the course of shear stress for circular and hollow circular cross-section and basic properties of sections are shown in Table 1.
Properties of cross-sections d D d Jp πd432 πD4-d432 Wk πd316 πD4-d416D In practice, when dimensioning the constructions, we are interested in the extreme values of stresses.
Summary The contribution deals with determination of the shear modulus for rods with circular and hollow circular cross-sections with the unknown material properties.