Search results

Oily sludge is a stabilizing system generally formed by water-oil, water-oil type of emulsions and suspended solids, it is differential to dewater, difficult to handle, and the composition and physical properties of the sludge will be affected by the sewage quality, produce process, pharmaceutical dosing and other factors, the difference will be very significant [1].
The sludge oil content in sludge in tank is significantly higher than landing crude oil, but the resin and asphaltene content is substantially equal, and they all belong to the aging oil range, in order to improve the separation effect, reducing of the adsorption properties between the oil and solid particles in the process was needed.
Quenching is adjusting the alignment state and physical properties of the particle swarm by physical or chemical means to make it suitable for different dewatering operation pretreatment, then to improve the performance of the mechanical dewatering [7].
When the aeration rate is 0.12-0.15 m3/h, speed of scraping bubble speed is 30 time/min, the stirring intensity 1200 r/min, volume ratio of water to sludge is 1: 1, dosage of inhibitor is 150 mg/L, djustment agent is 150 mg/L, collectoragent is 130 mg/L, concentrated settling properties of the sludge after flotation purification is better, precipitated by 8 min, its moisture content can be reduced to less than 85 %.
Extraction method can extracte the oil points, but the loss of the extraction agent and the economic problems brought about by this, is an important factor in restricting the development of extraction process.

Factors that cause deterioration of reinforced concrete are: aggressive powders (powder soluble and hygroscopic salts) and aggressive gases, sea water, high temperature (fire), osmosis, the phenomenon of freeze-thaw [1-3].
The primary factor that affects the durability of reinforced concrete elements is combined transport of water and aggressive substances through the concrete structure, and between concrete and the environment with the effect of corrosion of concrete and reinforcement.
The literature shows that phosphate layers deposited on iron objects are compact and continuous with good surface properties.
The obtained structures show a good surface compactity and roughness, meaning that the obtained layer have good properties.
Corbu, Enhancing properties of reinforcing steel by chemical phosphatation, Applied Mechanics and Materials, 754-755 (2015) 310-314.

That first step is to studying the variables that have influence on extrusion process, especially in those that affect billet temperature and extrusion speed.
The extrusion ratio of a shape is a clear indication of the amount of mechanical working that will occur as the shape is extruded.
These factors are difficult to control, so the following parameters are commonly used for characterized the extruded shapes according to geometry complexity (ASM handbook, Forming).
Shape factor.
It has also been added the consideration of two of the most usual material properties in extrusion in accordance with the type of alloy: elongation (A) and material strength (Rm).

The paper reports some main factors that effect the performance index of PSA fiber.
Table 1 Test equipment for fiber properties NO.
The main reason is that the aggregation of the polymer make a significant impact on the mechanical properties of fibers[2].
pH Effect the Mechanical Properties of PSA.
Because of the special structure, benzene ring is not affected by inorganic chemical reagents, unless under special circumstances.

It was reported that the geometry of cutting blade, rotation speed of blade, radius of rotary cutter, wrapping length of leaf were the key factors of the blockage and wrapping [8].
The mechanical properties of the palm sheath were assumed to be orthotropic elasto-plastic.
The elastic mechanical property parameters assumed for the analysis are listed in Table 1.
Elastic properties assumed for FEM analysis.
Properties Values 0.08 0.07 0.095 1530 [MPa] 11 [MPa] 1849 [MPa] 9.42 [MPa] 9.43 [MPa] 770 [MPa] Results and Discussions Experimental Results.

In addition to the quality of the vehicle fuel itself outside of its normal operation can affect the dynamic performance of the vehicle engine, lubricating oil are also essential.
However, the failure of vehicle engine lubricating oil has many factors, therefore, we need to analyze vehicle engine lubricating oil’s whole life process to identify the main factors for its failure, in order to take appropriate measures to improve the vehicle engine lubricating oil’s quality reliability and service life.
Because occurrence of each event is likely to cause the different degrees’ change of the lubricating oil physicochemical properties, it is necessary to strengthen the detection of the lubricating oil failure. 4 Failure detection and prevention 4.1 Failure Detection Process Lubricating oil carries contamination, wear, aging, and other useful information for fault diagnosis.
If these information can be grasped fully, not only mechanical wear due to changing oil late can be avoided, but also waste of resources due to changing oil early can be avoided.
Mechanical Science and Technology, 1995 (Suppl.): 235-238, 154.

Xue [3] found that with a certain base metal, weld heat input was an important factor influencing the toughness of CGHAZ, that under different weld heat input, the microstructure type, morphology, size and distribution in CGHAZ were different which behaved as different properties; C.L.
Experimental Material and Method The thickness of two industry single-furnace trial X90 pipeline steels is 16.3mm, and the chemical composition and mechanical properties are shown in Table1 and Table2.
C Si Mn P S Cr Mo Ni Al Cu Nb Ti V N Ceq 1# 0.05 0.19 2.05 0.008 0.002 0.35 0.31 0.41 0.038 0.26 0.086 0.012 0.013 0.004 0.57 2# 0.04 0.24 1.8 0.009 0.003 0.295 0.295 0.244 0.031 0.22 0.099 0.013 0.004 0.006 0.48 Table 2 Mechanical properties of X90 pipeline steel.
As is shown in Table2, the industrial trial X90 pipeline steel has excellent overall mechanical properties.
Conclusions (1) The industrial trial X90 pipeline steel has excellent combination properties and the mechanical properties of both 1# and 2# steel are superior to standard requirements.

Results show that the diffraction patterns of all samples were affected by changing oxygen partial pressure.
There was an additional factor that may contribute to the trends in N2 rather than the interlayer mixing alone.
The change in oxidation state of transition metal ions affects their ionic radii and bond length, M-O (M=Ni, Mn, Co) in the octahedral sites within the MO2 layer.
The lattice parameters and unit cell volume were fairly similar, but the atomic coordinate of z diverged slightly from the initial value. χ2 and overall statistics became better, with very low R-factors.
[5] Lee, K.S., Myung, S.T., Amine, K., Yashiro, H., and Sun, Y.K., Structural and Electrochemical Properties of Layered Li[Ni1-2xCoxMnx]O2 (x = 0.1-0.3) Positive Electrode Materials for Li-Ion Batteries.

The objective of the present paper is to investigate the effect of coarsening behavior of the MX nitrides during aging for up to 3000hours at 700 °C and, to clarify the factor which causes MX coarsening by a modeling of the MX coarsening process.
During exposure to elevated temperatures and creep stress, pronounced microstructure evolution occurs (recovery, grain and subgrain coarsening, precipitate coarsening), which causes the mechanical properties to deteriorate.
Factors affecting the coarsening rate of MX nitride precipitates are interfacial energy, γ, diffusion coefficient, D , solubility of particle in the matrix, ∞C , and molar volume in the particle, mV , in the case of a constant temperature.

Effect of DMSO Dosage on Hydrophobic Properties of HMCFC Prepared by ARGET-ATRP.
Effect of DMSO Treatment Time on Hydrophobic Properties of HMCFC Prepared by ARGET-ATRP. 10% DMSO was added to ARGET-ATRP reaction system for preparing HMCFC, and the change on the hydrophobic properties of HMCFC with treatment time can be found in Fig. 3.
The content of halogen Br immobilized on the surface of cotton fiber directly affects the grafting rate and grafting density of ARGET-ATRP reaction, therefore the content of Br on the surface of cotton filter cloth has a crucial influence on the hydrophobic properties of HMCFC.
Raw cotton fiber is extremely hydrophilic [14,15] as the nature properties of cellulose.
Wu, Surface modification of boron nitride nanosheets with polycationic electrolytes through ARGET ATRP for enhancing mechanical properties of cellulose film, Mater.