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Online since: December 2013
Authors: Megha Mahabole, Rajendra Khairnar, Manjushree Bahir
Dielectric and photoluminescence properties of Mn-HAp samples are studied as a function of incubation period in SBF.
Many reports are available on dielectric properties of Ca-HAp material in pellet and thick film forms [15-16].
Therefore, electric especially dielectric properties of HAp are important to have better understanding of change in electrical properties of hydroxyapatite bio-ceramic material upon implantation in the biological environment.
These properties are called as cole-cole plots.
Chaudhuri, Dielectric and piezoelectric properties of hydroxyapatite-BaTiO3 composites, Appl.
Online since: December 2014
Authors: Eva Riečičiarová, Marcela Bučányová
Dynamic properties of the gearing affect behaviour of a machine aggregate as the complete unit and effect also technological process quality to a large degree.
Depiction a - depiction of the standard initial defect vectors, b - depiction of teeth surface contact One of the important properties of the spiroid gearings is possibility to gain a large overlap factor.
It allows then to design mechanism with improved accuracy and better vibration-acoustic properties.
References [1] Mudrik, J. and all: Modelling and Properties Analysis of a Geared Machine Aggregate.
[3] Král, Š.; Kinematic accuracy and dynamic properties of gearing.
Online since: October 2006
Authors: M.C. Carotta, S. Gherardi, Isidoro Giorgio Lesci, G. Martinelli, Marco Nagliati
Aim of the work is to compare the morphological properties of TiO2 powders obtained by different methods.
Therefore, one of the main factors enhancing the detection properties of these oxides used for gas sensing is their grain size reduction [3].
The main advantage in using TiO2 as reducing gas sensor is that the response is much less affected by humidity than the response of other oxide as SnO2; this makes titania suitable for environmental monitoring.
The transformation from anatase to rutile occurs during heating or even mechanical grinding.
The present work compares the physico-chemical properties of titania nanoparticles syntesized by sol-gel and sol-gel-hydrothermal routes.
Online since: June 2013
Authors: Peng Wang, Guo Qiang Liu, Di Wu
Because the physical and mechanical properties of miscellaneous fill are discrete and irregular, we cannot use uniform physical indexes to describe it.
Meanwhile, considering the miscellaneous fill with many irregular properties, it is difficult, sometime impossible, to sample and test in situ.
To analyze how the values of c and φ affect soil nailing wall design, an engineering example calculated and analyzed by Lizheng-FSPw60 is given.
Factor of safety against overturning and sliding must meet the requirements of the specification in each variable calculation. 1.Influence of C and Φ Values on the Stability of the Foundation Pit In this analysis process, parameters were all constant values except c and φ.
Surface layer is jetted by 100±20mm C20 fine stone concrete. 2.Design and Checking Calculation The checking results of external stability are that the average design value of the pressure at the bottom of the foundation 108 kPa < 150 kPa, the max design value of the pressure at the edge of the foundation 146 kPa < 12150 kPa, factor of safety against overturning 14.65 > 1.60 and factor of safety against sliding 1.62 > 1. 30.
Online since: September 2008
Authors: Tetsuya Iwasaki, Hilary Bart-Smith, Thomas K. Bliss
It has also been show that sensory feedback is sufficient for entrainment of the neural controls to the mechanical resonance.
For our study, we will assume that , so that our structure is not affected by outside forces.
Note that Ti is calculated using a prestress factor P.
The nonlinearity ψ captures the saturation property of a neuron, and is assumed to be an odd, bounded, and strictly increasing function.
Brown, The Intrinsic Factors in the Act of Progression in the Mammal, Proceedings of the Royal Society of London.
Online since: April 2014
Authors: Feng Qi, Fang Liu, Wen Ru Sun, Xin Xin, Zhou Bo Zhang, Lin Jie Huang, Wei Hong Zhang, Dan Jia, Lian Xu Yu
Thermo-Span alloy is an oxidation resistant, low thermal expansion superalloy with good mechanical properties at the service temperature.
Although the alloy shows excellent properties, few researches documenting the basic processing procedures which are naturally of great importance for controlling microstructure and properties.
Provided the casting alloy shows acceptable hot workability and mechanical properties, it will save much cost in both material and energy by employing a simple homogenization treatment.
The tensile properties of the rolled bar are shown in Table 2, the properties still matched the results in the refer.1 and 7.
Table 2 Tensile properties of the rolled bar made from the casting Thermo-Span alloy.
Online since: February 2016
Authors: Sergei Yu. Tarasov, Evgeny A. Kolubaev, Tatiana Kalashnikova, Valery E. Rubtsov, Sergey Fortuna, Alexander A. Eliseev
In spite of the process temperature being lower that of in fusion welding, the heat affected zone (HAZ) is still the main problem for enhancing the mechanical strength of a FSW joint [2, 3].
It is common to divide the cross section view of the FSW joint into three zones as follows: stir zone (SZ), thermomechanically affected zone (TMAZ) and heat affected zone (HAZ) [11].
Thermomechanically affected zone.
Heat affected zone.
Mondolfo, Aluminum alloys: structure and properties, Butterworth, London-Boston, 1976
Online since: September 2013
Authors: Gorun Arun, Ali Osman Kuruscu
Figure 5 Wells beside the foundation walls Listed buildings As the pace of urbanization was increasing after 1960’s Istanbul had experienced unplanned development affecting the natural and cultural values of the historical areas.
Design supervision and construction supervision of restoration activities of public property are undertaken by the General Directorate of Foundations (foundation properties) and Ministry of Culture and Tourism (other public properties) where the design and construction supervision of restoration activities on private property are undertaken by the municipality in line with the principles approved by the regional conservation council concerned.
The timber houses inspected in Istanbul are privately owned properties.
Wood’s moisture content affects the dimensional stability, bending strength, stiffness and load duration providing more problems than any other factor in its use.
The people using these properties have to be educated so that they are aware and proud with their own heritage.
Online since: September 2013
Authors: Maria Rosa Valluzzi, Fabiola Nardon, Enrico Garbin, Matteo Panizza
Main mechanical properties of wood are [10]: axial compressive strength of 39 MPa, tensile strength of 84 MPa, flexural strength and elastic modulus of 70 MPa and 13000 MPa, respectively.
Composites properties (from technical sheets) are as follows (tensile strength and Elastic modulus are indicated, respectively): CFRP (2500 MPa, 230 GPa), GFRP (1300 MPa, 65 GPa), FFRP (710 MPa, 45 GPa), epoxy resin (70 MPa, 2.5 GPa) and primer (45 MPa and 2.5 GPa).
Mechanical strength is influenced by the timber and the environmental conditions.
CFRP and GFRP specimens showed a lot of voids within the composite system (Fig. 2), that affected bonding.
Cruz, A review of factors influencing the durability of structural bonded timber joints, Int.
Online since: March 2012
Authors: Yu Ming Zhou, Shi Lun Feng, Pu Lin Li, Jun Li, Zhi Yong Li, Zhi Qiang Zhu
Considering the excavation area, depth, the engineering piles length, pile diameter pile spacing factors, puts forward the experience calculation method, Honghuan Cui et al[4]. adopted Abaqus to simulate the mechanical behavior and deformation for retaining structure of foundation pit with excavating process.In order to reaveal the deformation and internal force of surport structure,spatial nonlinear finite element analysis is carried out in which the excavation process is considered.Ciritical parameters are discussed in detail.
All components are respectively assigned to properties, assembly, created the analysis step, defined the contactions and the boundary conditions, loading conditions, created mesh, then calculate and get results.
Therefore, quality level of the building model often can obviously affect the calculation time, calculation accuracy, calculation effect.
All parts are respectively assigned to properties, assembly, created the analysis step, defined the contactions,the boundary conditions, and loading conditions, create mesh, then calculate and get results
Therefore, quality level of the building model often can obviously affect the calculation time, calculation accuracy, calculation effect.
Showing 18141 to 18150 of 25960 items