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Each combination of components can affect the final properties of the resulting material.
The goal was to study the pozzolanic properties of expanded perlite.
Testing of physical properties of mortars.
This result is caused by two factors: (1) consumption of Ca(OH)2 by pozzolanic reaction; and (2) increasing time of curing the samples in semidry air.
After drying the final mortar properties seem to be favorable.

The choice of the Stirling engine to transform hot sources into mechanical energy lies in its many advantages.
(36) where kr is the skin effect factor, N the number of turns, lav the average length of a turn, Sc the cross-sectional area of the conductor and σ its specific conductivity Mechanical losses Mechanical losses are a consequence of bearing friction and windage.
Bearing losses depend on the shaft speed, bearing type, properties of the lubricant and the load on the bearing.
We evaluate the efficiency maps of the machines within the mechanical speed range produced by the medium Stirling engine (around 2000 rpm).
As a result, the choice of the electric generator and their renewable energies supply are taken randomly by researchers which will affect negatively the overall output of the generator set.

If the ULC was more diminished after damage, the overall safety of the bridge was more significantly affected by the damage.
Fig. 3 Twin-pylon cable-stayed bridge (unit: m) The material and geometrical properties for this bridge were listed in Table 2 .
A smaller ultimate load multiplier represents that the overall safety of the bridge is more significantly affected by the damage.
The variation of yield strength was reflected by multiplying the original design yield strength with a scale factor (SF) which ranged from 0.5 to 1.5.
Saxce: International Journal of Mechanical Sciences, Vol. 44 (2002) No. 11, p.2189

The physical properties of the materials used are summarized in Table 1.
Physical properties of the materials Materials S.G.
Yoon, Effect of fiber content on mechanical and fracture properties of ultra-high performance fiber reinforced cementitious composites, Compos.
Baradan, The effect of autoclave pressure, temperature, and duration time on mechanical properties of reactive powder concrete, Constr.
Türkel, Mechanical properties of reactive powder concrete containing high volumes of ground granulated blast furnace slag, Cem.

The coating morphology, physicochemical properties and bioactivity, including simulated body fluid (SBF) experiment, have been investigated.
(BC:bioceramic coating;TL:transition layer;HAZ:heat affected zone;BM:base metal) Bioactivity tests in SBF.The in vitro bone bioactivity of the FHA coatings was evaluated by immersing the specimens in SBF solution and examining the change in their surface during incubation.SEM/EDS analysis of the samples soaked in SBF were shown in Fig. 4.
However, near the surface of the coating heterogeneous nucleation is a predominating factor due to the presence of a high volume fraction of FHA.
The FHA coatings have been fully covered with plentiful flocculent apatite particles and demonstrate a rough surface morphology(Fig. 1c,d).The obtained high surface roughness values are reported to improve the cell adhesion due to better surface wetting properties.
Further work to validate these coatings is currently under progress including cell culture and mechanical testing of the FHA coatings.

They combine novel semi conducting properties with the scope for easy shaping and manufacture of plastics.
Indeed, charge injection and transport are the limiting factors in determining operating voltage and luminance efficiency.
Materials with specific properties are needed for making innovations possible.
Li, Photoluminescence properties of rare earth doped α-Si3N4, J.
Pode, Optical Properties of Eux Re(1-x)(TTA)3Phen Organic Complexes in different Solvents, J.

Introduction Understanding how the various thermal treatments influence both the diffusion properties and the grain boundary microstructure is critical in designing new nickel-based alloys with enhanced thermal stability.
The aim is to study the influence of fabrication process and/or annealing conditions on the GB self-diffusion properties in pure nickel within the direct context of the GB character distribution (GBCD) results.
The triple product P = δsDb (where δ is the GB width, s is the segregation factor for which s = 1 holds in the case of self-diffusion and Db is the diffusion coefficient along RBs) can also be written as rqp v qtDKP −− =
An extensive EBSD study was performed on samples subjected to diffusion examination in order to reveal possible variations in microstructure affected by their thermo-mechanical history and, simultaneously, to detect additional short-circuit paths, which could have an impact on diffusion behavior.

The term in ρd1/2 is the classical Taylor equation [3] and can be rigorously proven either by dimensional analysis [23] or by an evolution equation for the dislocation density as a function of stress [24]. kHP is the Hall-Petch constant and CSS a constant which depends on the lattice misfit of the solute atom and the elastic properties of matrix and solute.
To convert Eqs. (2) and (3) into expression for the yield strength and logarithmic strains in uniaxial tension, one writes σy=Mτy and ε=γ/M, with M the average Taylor factor for the material.
Once a weak obstacle is passed, it no longer affects the length of the stored dislocations but the energy stored in the pinned configuration is liberated and dissipates in the form of phonons [30].
The corresponding transformation of mechanical energy into heat is a friction phenomenon.
Theory of plastic deformation:-properties of low energy dislocation structures.

Trajectory Modeling of Moving Objects Based in Spatio-temporal Database Liu Jun,Li Jingwei Department of Computer Science,Henan Mechanical and Eectrical Engineering College,Xinxiang,China cirtise@sohu.com Keywords: moving objects,Moving Objects Spatio-Temporal model,trajectory modeling,Linear Regression model Abstract.
Not only affect database system performance, but also increase the cost of wireless bandwidth.
Preliminaries The space-time model of mobile point .Mobile Point space-time model introduces the concept of dynamic attributes, it uses a function of time that the future location of mobile point, the location attribute is a mobile point of dynamic properties, dynamic properties of the value of the time to decide.
ki factor for the spatial location; 6) Repeat the above process until all the points traversed time and space database, and finally come to move the point of trajectory.

Deforming Mechanisms of Two-pass Drawing Process of an Aluminum Tube from Circular to Rectangle Section Quan Guozheng1, a, Wang Menghan1,b, Zhou Jie 1,c , Tong Ying 2,d 1 College of Mechanical Engineering, Chongqing University, Chongqing (400044), China 2 Chongqing College of Electronic Engineering, Chongqing (400030), China a quangz2005@yahoo.com.cn, bwmh9792@163.com, c a65105410@cta.cq.cn, d tongying2004@126.com Keywords: Two-pass drawing; Semi-die angle; Instability; Touch-stress; Residual stress Abstract.
This assumption means the material properties do not vary with direction or orientation.
A homogeneous material has identical properties at all points.
Semi-die angle 2a affects rectangle tube filling greatly.
f f opt R R R R 0 0 lnln13 2 3 ） （ − = µ α (4) where µ is friction factor (here 1.0=µ ), 0R is the radius of original tube, fR is the average radius of shaped-tube.