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From this reason, this research has been conducted with objectives to evaluate on Urban Heat Island Intensity in Chiang Mai city and to study effects of population density, building density, and traffic density on ambient air temperatures since the difference in each factor between urban and rural area may affect to ambient air temperature in each area.
Since, in a day time, the heat from the sun is a major factor, which affects to an ambient air temperature in all areas.
The heat island at night time is mainly produced by anthropogenic heat emission and the urban surface properties [8].
Especially, the population density is a primary factor which impacts to other factors because areas with high population have high building density to support human being.
Acknowledgement This research was supported by Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University and The Graduate School of Chiang Mai University.

Obtaining ceramic bodies with enhanced mechanical properties via colloidal processing requires efficient dispersion of the ceramic powders.
Nevertheless, little work has been developed regarding its dispersion properties in solvents [11].
Properties of the organic additives, according to the manufacturers.
After powder addition, mechanical stirring continued for 10 minutes.
The effectiveness of the dispersants apparently results from several factors: the slightly basic IEP of bare CuO particles, the nature of the dispersants used, as well as the size of the molecules and their specific interactions with the particles' surface.

Lacking any metal substrate, they exhibit superior translucency properties and can be applied in areas with high aesthetic needs.
The optical properties of natural teeth are the result of the light reflected from layers of enamel, dentin [[1] O’Brien WJ.
Factors affecting the process of color matching restorative materials to natural teeth.
This way, we can obtain restorations of high aesthetic properties with little effort.
For a value less than 1, two colours are considered equal in terms of their properties [[] Wyszecki G, Stiles WS.

Some other important additional properties of the non-oriented silicon iron alloys (FeSi NO) are high electrical resistivity, increased through coating operation (e.g., using varnish, oxide surface, enamel, or non-metallic substances as phosphate), corrosion resistance, very good blanking and weldability properties, mechanical strength and a constant thickness, all over the steel sheet plane.
The geometrical and material properties are provided in Table 1.
Properties and geometrical dimensions of the investigated samples.
In order to analyze the magnetic properties, the loss separation theory was applied.
These factors lead to a decrease of the first anisotropy constant and of the saturation magnetic polarization as well as to an increase of the electrical resistivity [1].

Poly(L-lactic acid) (PLLA) stands out for its excellent biocompatibility and good mechanical properties; however, the long period required for its total degradation, associated to the high crystallinity of its fragments may cause inflammatory reactions in the body, which restricts its use in some clinical applications.
Porosity and roughness are important factors for cellular growth in the whole membrane structure.
Luciano et al (1997) [11] showed that addition of plasticizers to a poly(lactic acid) matrix produced porous membranes with interconnected pores with good mechanical properties for their use as cellular culture support.
In the bone matrix, however, the osteoblast secretes factors that make the deposition of large amounts of minerals (phosphate ions and calcium) easy.
Conclusions Based on the results presented were found to influence the PCL-T in matrix PLDLA, which changed its morphology, physicochemical and biological thermal properties. 

Its property directly affects the performance, handling stability and safety of vehicle.
Fitness Function with Improved Discipline Factor.
PSO algorithm with disciplinary factors can significantly improve the system's fluctuations, making the system more stable and meet the test requirements.
In a word, the PSO algorithm with disciplinary factors to optimize PI parameter is feasible, effective and it can greatly reduce the test bench system tuning control parameters time.
[4] Taichi Shiiba: Journal of Mechanical Science and Technology, Vol.4 (2009) No.23, p.954

Temperature is the one factor that can affect the average particle size of the solid oil particle.
Some pungent constituents present in ginger have great antioxidants, anti-inflammatory and anticancer properties [5].
Temperature is the one factor that can affect the average particle size of the solid oil particle.
Singh, “Cancer preventive properties of ginger: a brief review.,” Food Chem.
Zingiber, “Medicinal properties of Ginger ( Zingiber officinale Rosc .),” vol. 2, no.

CPC with good anti-washout performance was prepared and the effects of the modified starches on the properties of CPC were investigated.
Results and Discussion Effects of the modified starches on the anti-washout properties of CPCs.
According to the data of the percentage of remaining cement (PRC) and the anti-washout time in Table 1, it is shown the effects of modified starch on the anti-washout properties of CPCs.
Mechanical properties such as compressive strength are important factors to evaluate calcium phosphate cements, especially when they will be used for reconstruction of stress bearing bone [7].
These results indicated a positive effect of modified starch on the mechanical properties of the cements.

Raw Materials Portland cement clinker was provided by cement Plant in Shandong and gypsum was chemical Table 1 chemical compositions and mechanical property of clinker Chemical compositions /% Mechanical property SiO2 Fe2O3 Al2O3 CaO MgO f-CaO loss fineness compressive strength /MPa breaking strength /MPa m2/kg 3d 28d 3d 28d 20.83 4.91 5.98 63.75 1.16 1.17 1.83 400 28.3 45.7 4.8 8.1 reagent.
The chemical compositions and mechanical property of clinker are shown in Table 1.
Cement fineness affects the hydration of cement paste directly [4, 5].
From the change of amount of agglomeration, the degree of cement paste agglomeration is influenced by these factors directly, and the measurement results can show the change of the degree of cement paste agglomeration truly and completely, which has a good enantiotropy.

In the past few decades, The factors of  ions composition, flow field, operating temperature, material properties and structure of equipment, kind and magnitude of stresses have been researched a lot[1-5].
Temperature is an important factor for SCC susceptibility.
Alyousif and Rokuro Nishimura [6] found that temperature not only affected the stress corrosion susceptibility but also changed the cracking mechanism.
In order to study the impact of various factors on SCC susceptibility, researchers have analyzed the prominent properties of chlorineion concentration, temperature, pH and hydrogen sulfide concentration by using the gray relational theory, Yates's algorithm and orthogonal design [9-11].
But the prominent property of operating pressure was not involved in the analyses above.