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Online since: July 2017
Authors: Horia Octavian Manolea, Sanda Mihaela Popescu, Mihaela Jana Ţuculină, Florin Dan Popescu, Rodica Mercuţ, Florian Obădan, Monica Scrieciu, Oana Andreea Diaconu, Ionela Teodora Dascălu
TiUnite and ZiUnite implant surfaces exhibit high levels of osseointegration that confirmed their advanced osteoconductive properties.
A successful development of a surface modification for ZrO2 implants analogous to that of the titanium SLA surface should result in comparable interfacial biomechanical properties with titanium SLA surface.
Another strategy of osseointegration would be grafting of extracellular matrix proteins or growth factors, which could accelerate the healing and anchoring of these biomaterials.
Insufficient sample size may also have affected the results.
Mechanical properties and short-term in vivo evaluation of yttrium-oxide-partially-stabilized zirconia.
Online since: January 2016
Authors: Boris Bielek
Green Architecture The alternation of the mechanical manufacturing age with the age of informatics is indisputably reflected in the architecture which requires an interdisciplinary approach and integrated concepts.
Ventilation is a factor that most affects the annual energy demands of a building.
They can also partially take over the task of a system for the coordination and optimization of the relationship of environmental technology to the building construction elements that are able to utilize natural physical phenomena (e.g. elements with the application of phase change materials etc.); · The strategy of the interaction of a landscape and greenery affects the ecology in the macrostructure of an environment and conditions the proper selection or utilization of a locality for the purpose intended and functioning of a building – Fig. 5.L.
Bielek, Project of physical properties experimental investigation of double-skin transparent energy climate façade of Slovak national bank building, in: International conference Sustainable Building & Solar Energy, Brno, 2001, pp.37-39
Online since: March 2006
Authors: Y.R. Feng, Chun Yong Huo, C.J. Zhuang, Zhuo Zhuang, Xiao Bin Yang, Julaiti Maitirouzi
ZHUANG 4 1 Xi'an Jiaotong University, Xian 710049, China 2 Dept. of Engineering Mechanics, Tsinghua University, Beijing 100084, China 3 School of Mechanical Engineering, Xinjiang University, Wulumuqi 830008, China 4 Tubular Goods Research Center of CNPC, Xian 710065, China a yxb02@mails.tsinghua.edu.cn, bzhuangz@mail.tsinghua.edu.cn, cjmamat@eyou.com Keywords: Dynamic fracture mechanics, finite element, full-scale blast, CTOA criterion, pipeline Abstract.
The behavior of the high pressure gas is one main factor determined the propagation or arrest of the crack.
The assumption is made out of the consideration that coherence is found in the tendency of both, and vn, k+1 at the left end of the equation is an attempt value, which only affects computation speed and convergence, instead of computation precision.
In turn, (CTOA)C is a material property dependent on the temperature, T, the crack speed, v, and the thickness of the pipe wall, h.
Online since: December 2009
Authors: Fouad Cheaitany, Thomas Peters
deposit substrate material powder heat affected zone laser beam melt pool Fig. 1 Laser build-up welding High power density laser build-up welding with CNC precision Fouad Cheaitany a and Thomas Peters b Sulzer Innotec, Winterthur, Switzerland a email: fouad.cheaitany@sulzer.com, bemail: thomas.peters@sulzer.com Keywords: Laser Welding, Laser Build-up Welding Abstract.
Due to the low energy input the heat affected zone is very small and usually the dilution between the deposit and the substrate material is very low.
Laser build-up welding is a non-contact process with no tool wear or mechanical forces on the work piece.
Build-up weld repair (left) and modification (right) on IGT blade shrouds 3.2 Mold Tool Application The key success factor in mold tool repair or modification, besides the need for a defect-free weld quality, which does not allow pores, is the avoidance of distortion.
To preserve the wear and corrosion resistance properties, a low dilution between the thin Stellite™ layer and the substrate material as well as a low porosity i.e.
Online since: October 2014
Authors: Yong Lian Sun, Bo Zhu, Shan Shan Zhou, Bao Lei Chen, Jian Gao, Yong Wei Li
These problems affect the properties of polymerization seriously.
As a key factor of ATRP, catalyst system should have high tendentiousness to the formation of -X and high selectivity in the process of atom transfer.
Using this property, we can combine many kinds of functional polymers which have specific structure and are easy to be characterized.
Because of the difference between the properties of backbone and branched chain, grafted copolymer is often used as emulsifying agent, hydrotropic agent, surface active agent, phase transfer catalyst, antistatic agent, biomedical material and so on.
Because of having highly branched three-dimensional ball structure and lots of terminal groups, hyperbranched polymer shows entirely different performance from its corresponding linear molecules, such as low viscosity, no chain entanglement, good high-solubility and some other good properties.
Online since: November 2022
Authors: Nadjem Bailek, Adel Khalil, Mohamed H. Yehia, Muhammed A. Hassan, Nabeel Abed
Experimental correlations for its key thermal properties are reported in [14] under different operational temperatures.
Thermophysical properties The numerical modeling of an equivalent single-phase nanofluid flow can be performed via the correlations ‎(1)-‎(4) to obtain the thermal properties of the nanofluid mixture based on the properties of the base fluid and the nanoparticles, in line with the volume fraction (∅) of the solid nanoparticles.
The variation of thermal properties of the working pure fluid and nanofluids over the range of examined inlet temperatures are presented in Figure 3.
These properties are calculated based on the models in Equations ‎(1)-‎(4).
The turbulence is characterized by fluctuated and random flow field properties, which adds more stress to the fluid.
Online since: June 2011
Authors: Masato Enomoto, Kai Ming Wu, Guo Hong Zhang
In view of the above results it is interesting to see how magnetic field affects the transformation in alloy steels which contain a carbide-forming element.
At higher temperatures the carbide formation may play a significant role and can be another factor controlling the temperature and depth of the bay.
The results at lower temperatures were discussed in terms of thermodynamic effects of applied field on the a/g phase equilibrium and coupled-solute drag effects assuming that carbon and Mo diffusivities and the energies of interfacial segregation are not affected by the applied field.
Aaronson, in: Mechanical Properties and Phase Transformations in Enginering Materials, eds.
Online since: February 2026
Authors: Santosh Khanal, Netra Prasad Subedi, Kedar Nath Ghimire
As a result, scientists are focused on designing new adsorbents that possess high adsorption capacity, require minimal amounts, have excellent regeneration properties, and are efficient for adsorbing pollutant contaminants to mitigate the challenges of toxic wastewater in aquatic environments [12].
Furthermore, the approachability and availability of functional sites of adsorption are primarily governed by adsorbent dosage, which affects the Cr(VI) adsorption capacity [30].
Feng, Excellent adsorption properties of Mg/Al/Fe LDOs for Cr(VI) in water, J.
Xu, Effects of layered double hydroxides on the thermal and flame retardant properties of intumescent flame retardant high-density polyethylene composites, Fire Mater. 46(1) (2022) 107–116. https://doi.org/10.1002/fam.2951
Meenakshi, Synthesis and characterization of Zn–Al LDHs/activated carbon composite and its adsorption properties for phosphate and nitrate ions in aqueous medium, J.
Online since: July 2013
Authors: Consuelo M. Gómez-Soberón, Bertha Olmos-Navarrete, Manuel Jara-Díaz, José Manuel Jara-Guerrero
Dynamic properties for the Ruaumoko model were calibrated with elastic models and vibration tests.
Probabilistic damage evaluation A probabilistic evaluation of the damage was considered to include the uncertainty of the external load and the mechanical properties of materials used in the Despeñadero Bridge.
Probabilistic description of the mechanic properties Variable Description Mean CV Distribution f’c (KPa) Concrete compressive strength 28890 0.064 Normal Ec (KPa) Concrete elastic modulus 22000000 0.077 Lognormal Wc (KN/m3) Concrete specific weight 24 0.040 Normal fy (KPa) Steel yield stress 412020 0.064 Normal fu (KPa) Steel ultimate stress 618030 0.064 Normal Es (KPa) Steel elastic module 210000000 0.080 Lognormal Ws (KN/m3) Steel specific weight 77 0.010 Normal Results for the original structure.
With the original seismic scenarios, only small damages were registered by the C1 reinforcing steel option (for other analyses null damage were registered), so ground accelerations of seismic records were affected by a factor of two.
Online since: September 2012
Authors: Maik Butterling, Wolfgang Anwand, Frank Bergner, Cornelia Heintze, Andreas Ulbricht
Moreover, the range of candidate materials has been extended by introducing oxide-dispersion strengthened (ODS) steels to improve creep properties and radiation tolerance [6-8].
The ratio between the high-momentum parts of the annihilation line, which are mainly affected by annihilation with core electrons (outer shaded areas in Fig. 2), to the entire line area forms the W parameter.
This Coincidence Doppler Broadening Spectroscopy (CDB) improves the peak-to-background ratio by more than two orders of magnitude and the energy resolution of the measurements by a factor of allowing a much more exact characterization of positron annihilation with electrons having higher momentum and therefore more exact determination of the chemical surrounding.
Konobeev, The microstructure and tensile properties of Fe-Cr alloys after neutron irradiation at 400°C to 5.5-7.1 dpa, J.
Almazouzi, Effect of Cr on the mechanical properties and microstructure of Fe–Cr model alloys after n-irradiation, J.
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