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However, changing the oil too late may affect vehicle performance.
In order to avoid an engine failure, the oil must be changed before it loses its protective properties.
That axis change point shows change in properties of oil.
For better results, in further analysis, measurement of additional properties like density, pressure etc. can be employed along with viscosity and colour.
Sebor, Composition and oxidation stability of SAE 15W-40 engine oils, 2000 [4] Charlotte Besser, Nicole D’orr, Franz Novotny-Farkas, Kurt Varmuza, G unter Allmaier, Comparison of engine oil degradation observed in laboratory alteration and in the engine by chemometric data evaluation, 2013 [5] Arpit Mehta, Map Colors of a CIE Plot and Color Temperature Using an RGB Color Sensor [6] Charlotte Besser, Nicole D’orr, Franz Novotny-Farkas, Kurt Varmuza, G unter Allmaier, Investigation of long-term engine oil performance using lab based artificial ageing [7] M.R.Fenske, C.E.Stevenson, N.D.Lawson, The Pennsylvanis College, Oxidation of lubricating oils, factors controlling oxidation stability [8] A Publication of the Lubrication Engineers Technical Department, Motor oil degradation

In this study, we focus on the property of thepower parameters.
There are several factors affect the quality of depositing thin film.One of them, the plasma status in extended head is important and being discussed in this paper.
They can affect the performance of process.
We divide the experiment into several parts andelectrical properties are presented in this study.
From these, we can observe the voltage and current properties in extended head while parameters changed in primary side: the voltage before transformed.

It affects a lot of soil ecosystem services.
Pyrolysis processing factors such as temperature, residence time and oxygen absence affect surface characteristics of biochar a lot [6, 10].
Previous research reports that the potential impact of biochar amendment improving soil water holding capacity depend on feedstock, pyrolysis conditions and soil properties [11].
Results and Discussion Soil and biochar properties The biochars used were produced from softwood and walnut shell, which are two kinds of main feedstocks of biochar.
According to the different demand of agriculture practice and the variability of soil and biochar, we chose soils and biochars with representative properties in this study.

These excellent mechanical properties mainly arise from a martensitic transformation of metastable retained austenite under the influence of external tensile stress.
It was found that phosphorous addition improves the mechanical properties in TRIP steels when the content of phosphorous is larger than 0.07 wt.%.
Phosphorous promotes the retention of austenite as phosphorous enhances the matrix constraint affecting the bainitic transformation.
As the accuracy of the fraction from XRD measurement is significantly affected by the existence of texture and that from optical microscopy is influenced by various factors from etching techniques to phase identification, the magnetic method is regarded to give the most accurate results on the fraction [7].
As the interlath retained austenite is very stable during the tensile tests [1,5], phosphorous addition could be an effective measure to control the mechanical properties.

Dynamic model of WIM system The mathematic model of the system as following: (1) m represents its own weight, k is the Stiffness coefficient of the spring and c represents the mechanical damping of the system.
By the analysis in the last section, we know that the poor dynamic quality of the system affects the rate and the grade of accuracy of the weighting .So when the system increases series links, carrying out pole placement adaptive compensation makes the damping ratioζincrease to 0.707, and the natural frequency ωn increase to 100, which constitutes the ideal sensor weighting system[7].
From the figures we can see that the dynamic response property of the system is improved significantly.
Response with compensation 6 Conclusion The paper analyzes an important factor of limiting the speed by which the vehicles to go through from it by building the mathematical model of WIM system.
Factors of dynamic electronic truck scale measurement accuracy and countermeasures [J]. weighing apparatus, 2001, (5) : 33-36 [10] ChenJiZong, Digital signal processing spectrum calculation and filter design, Electronic Industry Press, 2002.09

A significant percentage of buildings are made of Reinforced Concrete (RC), thus determining the mechanical properties of interest such as concrete compressive strength is one of the most crucial issue [1].
Taken individually, the first two techniques are highly dependable on various factors such as humidity, porosity, internal voids or delamination etc. and can lead to faulty results.
Făcăoaru [2] was one of the first researchers who, in the late 60’s, saw the possibility of combining SRH and UPV, thus creating a method less affected by contingency factors whilst delivering high accurate results (SonReb).
The procedure presumes applying some correction factors depending on cement type and dosage, granulometry and nature of aggregates.
The combination of SRH and UPV provides good results even though the two methods are influenced by a various number of factors.

Therefore, the frame mechanical properties directly affect the mechanical properties and safety of the towing machine.
And this stress performance had little effect on the overall mechanical properties of frame.
Given the analysis the weight of various parts on the frame have little effect on the stress and deformation of the frame, the main reason having effect on frame is the value of towing load, ZXZ90 towing machine has good mechanical properties doing towing operations.
Adding connecting beam between main beam lateral beam can reduce the stress concentration phenomenon, and this improving measures can further improve the mechanical properties of frame.
After analyzed, we can draw the following conclusions: (1) The tension of wire rope is the determining factor to the mechanical properties of frame; (2) The maximum stress of frame doing towing operation appeared at the area where the main vertical beam connected with the short horizontal beam, and the phenomenon of stress concentration exists to some extent; (3) According to the stress distribution, we can know that maximum stress is much smaller than the yield limit, the deformation of frame is linear elastic deformation, and the mechanical properties and security of frame are very high.

The retardation of process of combustion is a complex process that depends on several synergistically contingent factors.
The application methods and mechanism of action of fire retardants depend on the characteristics of the fire retardant and the properties of the treated material that we want to protect against the negative effects of fire.
· Fire retardants of mechanical type for example films and various claddings of non-flammable materials.
In other words, the quality and functional system of retardation consists of appropriate selection of fire retardant, its suitable application and professional evaluation of environmental conditions of the protected material, as well as external factors affecting this material.
Currently, fire hazards are associated with the use of flammable components and materials that cause loss of life, damage to property and contamination of environment.

A Research on Effective Communication Distance for Surface Wave Propagation Li Jingwei a, Quan Houde, Cui Peizhang Dept. of Information Engineering, Mechanical Engineering College, Heping West Road No. 97, Shijiazhuang, Hebei, China ajxyljw@163.com Keywords: effective communication distance; surface wave propagation; 2FSK system; SNR Abstract.
And the BER is affected by many factors, such as background noise, modulation forms[6].
The power of signal in the receiving antenna is affected by transmitting power, sending and receiving distance, and so on[7].
The ground attenuation factor A is influenced by operating frequency, transmission surface electrical properties and the propagation distance.
The experience formula of the attenuation factor is , (2) where x is called numerical distance.

This article studies the hardness and temperature influence on the sealing properties of the sealing ring with Y section, that is between the piston rod and the cylinder barrel.
Within one period, the thermal energy converted from the loss of mechanical hysteresis per unit area is: ∆E=02πωσdε=πε02E2=πε02E1tanβ=πε0σ0Esinβ (6) In Eq(6), tanβ means mechanical hysteresis factor.
Heat flux distribution factor of target surface and contact surface is set to the default value of 0.5.
Mechanical engineering, Beijing, 2000
A mixed lubrication model of a rotary lip seal using flow factors.