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Online since: October 2010
Authors: Shu Tao Huang, Li Zhou, Li Fu Xu
Introduction Diamond films have excellent mechanical, electrical and optical properties, such as extreme strength, hardness and elastic modulus, excellent wear resistance, and optical transparency over a wide range of wavelengths.
In order to overcome these drawbacks of the mechanical polishing method, the alternative polishing techniques such as thermo-chemical polishing [5-6], plasma etching [7], ion beam etching [8] and chemically assisted mechanical polishing [9] have been developed.
Therefore, the temperature rise at the interface is the critical factors in realizing the super-high speed polishing.
Firstly, with the interface temperature rise is so high that the polishing plate metal becomes softer and small metal particles will adhere firmly to the polished diamond surface, which will affect the further polishing of the diamond film.
Conclusion The high efficient and precise polishing of CVD diamond film is the key subject that affect its application and development.
Online since: March 2019
Authors: Felicia Dragolici, Mihaela Nicu, Laura Ionascu
Membrane process used for liquid radioactive waste treatment offer a series of advantages with high decontamination factors, large volume reduction and low energy consumption [6-7].
Because the mechanical and chemical properties of the cement–waste matrix are highly dependent on the chemical properties and the concentration of the waste, the recipe used in the solidification process is optimized for each composition of waste through a number of experiments [11].
In addition, the cure of cement paste can be affected adversely by certain salts from the concentrate, making it necessary to prepare trial formulations to ensure that the waste form will develop the required properties.
In a previous paper were prepared samples based on Portland cement with concentrate with different pH values and they were mechanically tested for compression in order to obtain optimal value of pH that does not influence negatively mechanical properties of the cement matrix [12].
Online since: November 2012
Authors: Toshiki Hirogaki, Keiji Ogawa, Heisaburo Nakagawa, Eiichhi Aoyama
This is because CFRP has superior properties such as light, higher specific mechanical strengths, etc.
This GFRP plate is generally used for PWBs worldwide because it has higher cost performance, superior insulating properties, and mechanical strength.
Table 1 shows the properties of the carbon and glass fibers utilized in the plates.
Although the machining temperature is an important factor that affects machining quality, it is difficult to measure drill temperature during drilling.
Yao, A Novel Approach to Evaluate the Delamination Factor of CFRP Hole, Procs. of LEM21 (2011) 1-5
Online since: November 2025
Authors: Haia H. Aldosari
The unique physical properties of biocompatible nanosized zinc oxide (ZnO) have led to important scientific achievements.
Along with their remarkable healing properties, ZnO NPs are also known to produce ROS and induce apoptosis.
Schematic illustration of toxicity mechanism/factors of ZnO NPs. 6.Future Perspectives ZnO NPs therapy applications are one of the multifunctional nanoplatforms that are the key to the future of nanomedicine.
Furthermore, one of the main contributing factors to ZnO NPs' toxicity is the production of ROS.
Lu, Zinc oxide nanostructures: synthesis and properties, Journal of nanoscience and nanotechnology. 5(2005) 1561-1573
Online since: July 2013
Authors: Luciana Cristea, Diana Laura Cotoros, Barbu Christian Braun, Mihaela Ioana Baritz
The parameters of muscular-skeletal structure represent the key points in the gait or stability analysis process, allowing the development of some studies by means of which the properties of muscles and tendons combine in order to produce the gait or stability process with efficient energy consumption and to assure the muscles’ protection against an excessive extension.
Factors influencing plantar pressure Plantar pressure is influenced by some factors or functional parameters of the locomotion system such as: structural factors, operational factors, methodology factors, factors related to measuring methods and respectively all the factors connected to the shoes’ type. [4] Of all the factors influencing plantar pressure, there still is a common characteristic represented by its general distribution upon the plantar surface, as it is presented in fig.3; position deviations and values are the ones making the difference from one subject to another, from the normal shape to the pathologic one.
Fig.3 General distribution of pressure peaks on the foot sole during gait [2] The displacement velocity and respectively its control are other factors as important as the operational or structural ones.
The lower leg muscles, forming the three compartments: anterior, posterior and external, are usually affected but in this case only the ones from the anterior and external compartments.
Within the medical actions, after the mechanical and chemical cleansing of the wound was performed, the specialist doctor decided a surgery to reduce the tibia fracture and then apply the ostheosynthesis procedure using a rod.
Online since: October 2010
Authors: Teng Yun Zhang, You Yuan Shao, Jian Chen, Hong Bo Fan
However, inorganic ceramic membranes do not possess electrically conductive and catalytic properties.
Then the tubular ceramic membrane electrode was obtained with the properties of electrocatalysis and membrane porosity.
The carbon deposition also affects the electroconductivity of the tubular membrane electrode.
The influencing factors can be summarized as the pyrolyzing catalyst content, the propylene flowrate, the pyrolyzing temperature and time.
To investigate the membrane property further, the same electrode was also used for testing according to Fig.3.
Online since: January 2018
Authors: Yao Dong Gu, Gusztáv Fekete, Mei Zi Wang, Yang Song
In addition, plantar pressure and horizontal stress are one of the major factors that lead to diabetic foot ulcers [15], the measurement of plantar pressure distribution is also a commonly clinical method in assessing the elevated risk of diabetic foot [16].
The plantar temperature in the process of movement can help us better understand the impact of shoes and environmental factors [22].
Be in running exercise stage, the body metabolizes faster, muscles constantly contract, blood circulation accelerates, continuous foot friction occurs and other factors cause foot temperature to steady increase during movement.
Some studies have revealed that different material of socks would make the human body react differently thus, affecting foot temperature [31].
The effect of environmental temperature on the properties of running shoes.
Online since: November 2011
Authors: Jing Bo Hu, Rui En Yu, Chang Qing Fang, Shi Sheng Zhou, Mao Rong Zhang, Meng Ya Zhang
In fact, many factors can affect components of the waste, and various factors on the role of the composition of the waste is complex.
This method is also called as mechanical recycling.
As it is a low entropy treatment and is restricted by the technical and economic factors, so we must separate them in order to recover.
Besides, waste packaging PE can improve resistance to rutting, fatigue properties and resistance to water damage of asphalt.
In the compound modified asphalt by waste packaging PE and crumb rubber, the modifier absorb the light oil component, reducing the content of the activity and free radicals, improve the aging properties of asphalt, while the antioxidant and anti- ozone in the crumb rubber increased the antioxidant capacity of the asphalt, resulting in aging properties of composite modified asphalt superior to other [13-15] Wish Sorting of the waste packaging polymer can more easily obtain good efficiency on the basis of sorting daily garbage.
Online since: April 2014
Authors: En Wei Chen, Yi Min Lu, Shuai Liu, Meng Bao, Zheng Shi Liu
The problems of actual production the motor’s noise and vibration can also be solved. 1.3 Determine the properties of model materials The core structure of vehicle synchronous motor is a combination of the orthotropic silicon layers, which can not do as uniform continuous elastic body do.
Normal lamination plane ​​of elastic modulus is difficult to value, which affected by Core is a whole piece or slice punching, laminating coefficient, whether painted.
The overall is orthotropic, we assumed winding and the stator teeth keep in close contact when modeling, but in fact the stiffness of windings is much lower than copper, on top of this, the issues of slot fill factor also should take into consideration.
Material properties are shown in Table 2.
Tab. 1 Material properties of stator Property Steel Laminate structure Cooper Chassis Windings ρ/(kg/m3) 7800 6960 8900 2650 3045 E2=E3/Pa 2.058e11 2.058e11 1.2e11 2.0e11 9.5e10 E1/Pa 2.058e11 1.5e11 1.2e11 2.0e11 1.4e10 G13=G23/Pa 8.0e11 7.3e10 4.6e10 7.6e10 4.6e9 G12/Pa 8.0e10 8e10 4.6e10 7.6e10 5.4e9 ν12=ν13=ν23 0.28 0.3 0.3 0.3 0.3 1.4 Solving and post-processing Stator core assembly can ensure the quality of the grid by Sweep of refined mesh networks, etc.
Online since: March 2008
Authors: Raúl Bermejo, Guenther A. Maier, Jens Brechbuehl, Hugues Guerault, Jozef Keckes
A commonly used multilayered structural design is that associated with the presence of compressive residual stresses developed in the laminate during cooling from sintering, as related to differences in elastic or thermal properties (Young's modulus, thermal expansion coefficient, etc.) between the layers [4-6].
Such stress distribution may affect the mechanical response of the material influencing the structural integrity of a given component.
The finite element model employed was a nine-layer structure, whose layer properties, i.e.
Regarding thermal properties, the thermal expansion coefficients (αΑΤΖ = 9.82 x 10 -6 K -1 and αAMZ = 8.02 x 10-6 K -1) were discretely introduced in the model from data corresponding to dilatometer curves, considering 1200 °C as the reference stress-free-state temperature.
Additionally, the tri-axial stress state at the surface of the laminate due to edge surface effects may affect the magnitude of the stresses measured by X-rays.
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