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The presence of lubricating oil in the piston– cylinder clearance also affects the leakage of gas, but it is difficult to assess in what form and in what quantity the oil interacts with the gas flow. Therefore, the gas leakage rate for each position of the piston throughout the compression...
As a result, the wellhead price of gas in China is equivalent to or higher than the border prices of Europe's imported gas. A number of studies have addressed the gas production and consumption patterns in China from a national perspective [7–9]. However, for a country as large as ...
Gas Emissions from Asphalt Pavement Construction: A Case Study in China Feng Ma 1,*, Aimin Sha 1, Ruiyu Lin 1, Yue Huang 2 and Chao Wang 1 1 Key Laboratory Special Area Highway Engineering of Ministry of Education , Chang'an University, Xi'an 710064, China; amspaper@126.com (A.S....
According to the solution-diffusion theory of molecular transport in polymers, the permeability (P) coefficient is determined by two factors: solubility (S), related to the properties of the gas and to its interaction with the polymer matrix; and diffusivity (D), which depends mainly on the ...
The increase of Young's modulus and tensile strength are reached as the composites become more brittle. Keywords: polymer-matrix composites; rheological properties; thermal properties; permeability; extrusion 1. Introduction Gas-barrier properties of polymers have become essential in various fields, like...
bCO2 —exponents expressing evolution in time the price of energy carriers and charges for the emission of harmful products combustion to the environment (e.g., eel(t) = eet=l 0eaelt etc.; depending on the value ael the eel price may in the following years to grow, decrease or be co...
On the one hand, reduction in N fertilization abates GHG emissions—first, due to reduced energy demand for less N fertilizer production and secondly because of fewer N inputs into agricultural soils, resulting in fewer N2O emissions. On the other hand, it can be expected that yield penalties...
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Finally, the potential and deficiency of the system are described in Section 7, which also presents conclusions. 2. Related Works 2.1. Oil and Gas Data Management Systems Huge amounts of oil and gas production related data have accumulated over the years. The ever-growing data consist of ...