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The generated analytical data can be related to the mechanical properties of the sintered steels if the size of the specimen is large enough.
The parts thus produced were of complex shape, but the mechanical properties were rather low [1,2].
This knowledge is of extreme importance also because the mechanical properties of the steel are very much influenced by the combined carbon.
It was shown above that carbon is one of the most important factors in reducing oxides.
Do the sintering atmospheres affect the resulting mechanical properties?

Reservoir properties, fluid properties has great ambiguous for the effect of CO2 huff and puff, therefore, the fuzzy comprehensive evaluation method to be used for the suitability of the candidate evaluation wells.
The weight ratio of evaluation index is very important in the evaluation process, to avoid the influence of subjective factors, so we use entropy method to determine the index weight ratio.
Entropy method can effectively avoid the influence of subjective factors, making the weights ratio more reasonable. 2 Fuzzy Comprehensive Evaluations Fuzzy comprehensive evaluation can be divided into the following five steps [6, 7]: (1)Determining factor set: ; (2)Determining judgment Sets: ; (3)Determining the fuzzy evaluation matrix: ; (4)For a given weight W, Computing fuzzy result by fuzzy arithmetic model: (9) (5)Using the maximum membership principle, we can conclude that the comprehensive evaluation results. 3 Examples of calculation 3.1 Evaluation of classification According to the factors of affecting CO2 Huff and Puff effect, total 12 indicators have participated in fuzzy comprehensive judgment, namely, Effective thickness of reservoir(Hd), Horizontal well length(L), Reservoir temperature(T),reservoir pressure(P),oil viscosity(μ),oil density (ρ), reservoir heterogeneity(Vk), oil saturation (So)
The fuzzy comprehensive evaluation method based on entropy for mechanical properties of the product [J].
Based on the entropy weight method to determining the weight of the factors of affecting food production [J].

With the action of tensile stress cracks occurred on the surface of cladding layer, seriously affecting the quality of laser cladding layer, which greatly limits the application of laser cladding process [1-3].
Shu et al [6-7] studied small plastic deformation generated on the metal surface after micro-forging, thereby changing the mechanical properties.
At the same time, friction factor 0.3, contact heat transfer coefficient 1.8, head speed 10 mm/s were assumed in the model discussed here.
Ni60A’s mechanical properties were shown in Table 1.
To confirm that the high-frequency micro forging method of laser cladding layers to improve surface mechanical properties, have good effects on the confirmatory contrast test.

The physical and chemical properties of natural polymers significantly affect the performance of the final coating [3].
In addition, plasticizers are used to reduce brittleness and to improve mechanical properties of the membrane.
Besides, emulsifiers with small spheres increase their dispersion and improve physico-mechanical properties of the membrane [4-5].
Physico-Mechanical Properties.
Physico-mechanical properties of mono- and composite films.

Effect of sliding speed on wear property of Al2O3-SiO2(sf) / AZ91D composite Guanjun Liu1, a, Xin Ning1, a Wenqing Zhang1, a and Zetong Yu1, a 1 School of Mechanical and Electronical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, 453003, China alguanj@126.com Keywords: Al2O3-SiO2(sf) / AZ91D composite, Aluminum Silicate Fiber, Sliding Speed, Wear Rate Abstract.
Dry sliding wear properties of the composites were tested by means of MM200 wear tester (block-on-ring configuration) against a hardened alloy steel counterface with hardness of 53HRC under loads of 10N, 20N, 30N, 40N and 50N and sliding speed of 0.47m/s and 0.92 m/ s, and wear morphology of the specimens was observed by SEM (scanning electron microscope).
Magnesium alloy matrix composites have better wear resistance property than magnesium alloys[3-4], but currently, the reinforcement of the MMCs is mainly Al2O3 fiber, SiC partical, TiB2 partical and TiC partical, et al [5-7], which their higher prices limit applications of the MMCs on civilian products.
In order to inverstigate wear resistance property of Al2O3-SiO2(sf) / AZ91D, effect of sliding speed on AZ91D alloy and the MMCs with volume fraction of 15%, 20%, 25% and 30% were investigated, and wear mechanism of the alloy and the MMCs.
As what mentioned before, wear rate of AZ91D matrix alloy will reduce when accumulation of friction heat leads to friction temperature increasing to 225 Celsius degree or more, but it is one of influencing factors on the wear mechanism of the MMC, which is the result of combined action of above two factors.

We have developed the original theory and procedures to simulate the electromechanical properties in doped semiconductors by use of electronic band structure [4,5].
The conductive properties of ZnO nanowire models can be discussed in terms of their electronic band structures.
A novel original procedure to simulate the piezoresistive properties has been developed on the basis of first-principles calculation [4,5].
Simulation results of the gauge factors and the longitudinal piezoresistance coefficients are shown in Table 3.
Temperature dependence of gauge factors for p-typr (ZnO)24 models simulated by 1% tensile strains.

The following factors of influence on cohesive strength varied in conducting the numerical and real experiments in “foam concrete-reinforcement” system: 1. mechanical properties of reinforcement, type and parameters their embedment into foam concrete samples (Table 1); 2. mechanical properties of foam concrete depending on their density (Table 2).
Reinforcement element properties and parameters their embedment into foam concrete samples.
Foam concrete mechanical properties [13].
The set values during the numerical simulation were: loading conditions and the factors affecting reinforcement and concrete cohesion (Table 1, Table 2) which listed in paragraph 2.1.
Slavcheva, Mechanical properties of cement porous concrete at uniaxial compression with due regard for regularities of its creep Constr.

The optimization of the properties is mostly achieved when the dimensions of the additive is in the nanometer range, producing a nanocomposite.
These improved properties make them candidates for a number of potential applications in many industrial sectors like, for example, automotive, aerospace, electronics and biotechnology [2].
The structures that present the optimized properties are the intercalated and the exfoliated ones.
When nanocomposites of semi-crystalline polymers are considered, two factors may contribute to the improvement of the mechanical properties: the mechanical reinforcement due to the addition of the inorganic material, which should be analogous to similar improvement for nanocomposites of amorphous polymers, as well as the effects of a possible change in the crystalline characteristics of the polymer because of the presence of the inorganic nanofillers in case that the surface-nucleated crystalline phases have even better mechanical and thermal characteristics than the bulk crystalline phase.
Nevertheless, although improved properties can be obtained, the mechanism behind the effects of the inorganic filler on the crystallization mechanism has not been yet understood [5,6].

Olaogun Department of Electrical/Electronic and Computer Engineering, University of Benin, Benin City, Nigeria a samigbinovia2006@yahoo.com Keywords: Designed parameter, Performance characteristics, Weld piece properties, Heat energy, and metal arc welding.
Adjusting the position of the electrode to maintain a constant gap sustain the arc to ensures fine weld or cut with excellent corrosion resistance and mechanical properties.
Interpreting Figures 2.0, as the operating power factor increases, the active power (P) also increases; this explains while power supply authorities restrain operating loads, especially inductive loads at lower lagging power factors and places such customers on special tariff in view of the enormous amount required in power factor correction.
In this work an innovative method for estimating the actual cooling rate in welded section based on applying a weighting factor determined from the heat-affected zone (HAZ) width, obtained from etched sections, and reflects the actual response of the plate to the heat flow condition to the Rosenthal analytical solutions for thick and thin plates was examined.
Subjecting the fabricated machine to open and short-circuit tests, continuity and on -load tests, using wire gauges 10, 12 and 14, the machine was found to be operating at 0.81 lagging power factors and at efficiency of 97%.

In addition, the effect of air, electric field and other factors would accelerate the aging of oil under certain conditions [4].
The prevention and elimination of the particulate pollutant in the transformer oil If the transformer oil was polluted by mechanical impurity particles, it could cause deterioration of oil’s dielectric strength, dielectric loss, volume resistivity and other electrical property.
The more mechanical impurity particles in the oil, especially large particles, the worse the electrical property and insulating property of oil would be.
Make sure that the glue, paint and other materials used were compatible with the transformer oil, and they would not peel off or break down and affect the oil quality [7].
Because of the production process factors, operating factors and the neglects during work, there might exist large particles in the oil such as copper, iron, fiber, etc. [7].