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BOX 62000-00200, Nairobi, Kenya. 2Department of Mechanical Engineering, College of Engineering and Technology, Jomo Kenyatta University of Agriculture and Technology, P.O.
Subsequently, this affects the reaction rates in fluidized bed gasifiers and in turn affecting gas composition and yield [6].
Granular temperature Kinetic theory of granular flow (KTGF) concept is widely used to determine the dispersed phase properties [24].
Furthermore, the figures show that the bed pressure drop increased roughly by a factor of two when the initial bed height changed from H=D to H=2D but the minimum fluidization point remained unaffected.
The temperature effect on Umf can be attributed to the behavior of air properties (density and viscosity) with temperature.

Chen Department of Mechanical Engineering The University of Hong Kong, Hong Kong, Pokfulam Road, Hong Kong, China Abstract: The relationship between the deformation orientation distribution function (ODF) and the primary recrystallised ODF in cold and warm rolled metals, is not a simple mathematical transformation from one to the other, but is through thermally activated processes occurring in the deformation microstructure.
Shear band thickening and α grain fragmentation are also considered, since both processes can produce recrystallisation nuclei, which in the α fibre case can reduce desirable mechanical properties.
However is when two hard grains are in contact, it seems that the initial response is to rotate material in both grains so that the equality of Taylor factors is approached [25].
The reasons for the different optimum reductions between Al-killed and IF steels is still unknown, but the presence of interstitial carbon is known to affect both strain rate sensitivity [26] as well as work hardening.

Five limit states (i.e. characteristic properties [5]) are distinguished, these being the load-bearing capacity of the structure R (t), the structural integrity E (t), the thermal insulation I (t), the density of thermal flow W (t) and the smoke resistance of the structure S.
The characteristic properties of the structure must be maintained for the required period of fire resistance.
The fire height of the building and its influence on the possibility of using other structural systems than a non-flammable one need to be examined in greater detail, as both of these factors will further influence the selection of the type of escape route to build.
Materials for Technical and Financial Evaluation Fire safety has an important influence on the building designs of investors as it affects technical solutions which are part of the design documentation of buildings.
The most important factor for the evaluation is the budgeted price; the weight and the time required for realization are other factors.

This results in excessive friction wear which in turn affects the integrity of the suspension system and reduces the safe service life of the installation.
car + load diverting pulley compensating ropes counterweight traction sheave travelling cables factor 2:1 suspension ropes reeving L(t) Lcw(t) M(t) Mcw(t) w (t)0 w w V m x x V Fig. 1.
Structural Integrity and Vibration Suppression of Elevator Ropes The structural integrity of elevator suspension ropes decreases during their lifespan and properties of both steel wire and polymeric ropes change during their service.
The adverse resonance behaviour affects the structural integrity of the suspension system causing fatigue breaks of wires in steel ropes and destructive self abrading and repetitive compressive loads of fibres in aramid ropes.
Janovsky: Elevator Mechanical Design (Elevator World Inc., Mobile U.S. 1999)

The results of the experimental research proved that temperature and viscosity of the polymer found in liquid state are able to strongly affect the bubbles release and maintenance of wall thickness in thick-walled moldings.
They appreciated that the model proposed by Bellehumeur could be modified by considering a geometric factor.
Obtaining a layer of minimum thickness adhered to the internal surface of the mold, as a consequence of the mold rotation around a horizontal axis Sarrabi et al. [4] presented the results of a mechanical properties simulation process of rotomolded parts by considering the material microstructure, in the case of using the crystallization kinetics.
The above mentioned aspects ensure also the positioning of the mold at a certain distance r from the rotation axis and changing thus, between some limits, the rotation speed and the centrifugal force able to affect the flow of the liquid material in the mold cavity.

It was noted that, the use of a constant shape factor might not be sufficient when considering wet compression effects.
To determine the size of child droplet after breakup: (11) Where Kbr is the breakup constant depending on droplet breakup regimes and is given by Weber number of water droplet: (12) Where ω is the oscillation frequency, k1, k2 and k3 are breakup factors. 2.3 Droplet and wall interaction model When water droplet passes over the rotor region, its impact changes on the mass, momentum and energy of water droplet as shown in Fig. 2.
Subsequently, in fig.4c, the shockwaves intensity breaks due high amount of injection rate and low slip velocity, thus, reduces the properties of the fluids i.e. temperature and density much lower toward the trailing edge.
(a) Inlet mass flow against droplets diameter (b) Outlet temperature against droplet diameter Figure 9 Variation of inlet mass flow rate and outlet temperature with nozzles droplet diameter at different injection rate Fig.9 (a) Shows effects of inlet mass flow rate under different droplet diameters of wet compression, it’s obvious that certain factors like evaporation and convection affect the mass flowrate of the compressor, however droplet diameter is equally another contributing factor.
Dynamic viscosty of the air and water are quite known but in wet compression, where air and water mixed together the properties behaviour changes as shown in the diagram above. in all the two graphs, dynamic viscosity of water droplets decreases with decrease in the amount of water droplet, similarly, the decrease of the dynamic viscosity appreciate along the streamwise position with increase in the blade span.

In the following the ‘mechanical way’ to the kg is described, the precise determination of the Avogadro constant, NA.
From this crystal, single parts spread along the length of the crystal were used for the analysis of the crystal properties and homogeneity.
Additionally, a novel determination of calibration factors K used to correct the measured ratios for mass bias effects has been applied. 28Si crystal samples of parts of the original float-zone crystal located around the two spheres were investigated with respect to the molar mass.
Self-heating of the Pt-25 thermometer cannot affect the temperature of the sphere.
Secondly the experimental properties are assorted, e.g. temperature of the sphere and phase correction due to the surface layers.

The Ak are called the anisotropy factors.
Table 1: Properties of PAC probe nuclei relevant for this volume.
Compared to simple leading edge triggering this provides superior timing properties as it eliminates amplitude-dependent walk for signals with variations in rise times.
Examples This section examines how information about the properties and the processes related to defects can be obtained from parameters in Eq. 24 when fitting PAC spectra.
Lattice relaxations can reduce further the symmetry of the local crystal structure and the induced EFG, thereby affecting the orientation of the EFG principal axes as well as the values of the components (and the measured interaction frequencies).

Introduction Good high-temperature strength properties coupled with low density make titanium alloys and titanium aluminides excellent candidates for high temperature structural applications.
FL alloys are of greater engineering interest than equiaxed alloys due to their superior creep properties.
Interestingly, if interface sliding were to dominate at lower stresses, creep properties would be worse for alloys with narrow lamellar spacings.
Mills, in Mechanical Properties Derived from Nanostructuring Materials, Materials Research Society, (2003), p. 261
Pettifor, in Defect Properties and Related Phenomena in Intermetallic Alloys, Materials Research Society, (2003), p. 181

Moreover, researchers have tested the chemical and mechanical properties of ash and found that the main element of ash is silica for around 80-90%.
As for the experiment with the high compressive strength brick with different mixtures of alumina and ash, this would be done according to the standards about the physical properties of the high compressive strength brick.
However, different temperature for burning could be another factor which could affect the water absorption.
When this was compared to the research by Chaiwat [6] into the development of the properties of clay brick with mixture of ash, the compressive strength of such clay-mixture brick was 55.92 kg/cm2.
Sisomsak: The Development of Properties of High Compressive Strength Brick Mixed with Ash (Master’s thesis in Science, Department of Civil Engineering, King Mongkut’s University of Technology Thonburi 2005)