Along with rapid expanse of the whole world economy and strict request of environmental protection, demand of natural gas presents prosperous situation, which brings great pressure to the development of natural gas industry of China.
The pipeline industry worldwide has got a rapid development since the last century in pipeline technology. The MAOP of gas transmission pipeline is greatly increased from 0. 2 MPa of the last century to 12-15 MPa of this century,and the diameter of pipeline is increased from 406 mm to nowadays 1219- 1422 mm.
In recent years, China's sustained, steady and fast economic growth has become a "bright scene" in the world economy. People's living standard has been improved greatly. All these have paved the way for the rapid development of China's petrochemical industry.
Along with the rapid progresses of the modern civilization and technology, petroleum, petroleum products and petrochemicals are been used more and more widely in the industry, agriculture, transportation, national defence and so on, and has been infiltrated into the more deep and extensive field.
With the rapid development of our country economy, lots of energy is demanded increasingly. Lack of demand has become a serious problem day by day, especially lack of petroleum. It is an important task into which many a scientists put their hearts how to solve the problem of lack of energy.
Ever since 90’s, with the rapid development of computer and IT technique, as well as the popularity of the internet, E-commerce has been stretching to various fields of the whole society. The most distinctive one should be the theory of process reengineering, provided by Hammer from American management field, which creates a good circumstance for the worldwide revolution of process reengineering.
The use of time-frequency methods (phase space methods) allows the use of rough symbols of ultra-rapid growth in place of smooth symbols in the standard classes.
The pharmaceutical sciences are advancing rapidly in the post-genomic era of the 21st century with the completion of the human genome, as well as those of many other organisms including bacteria and parasites, and the rapid advances in proteomics.
The α-isomer exhibited rapid and significantly higher peak plasma concentrations in all the species post intramuscular administrations, while β-isomer showed prolonged plasma levels.
This suggests that the rapid initial reduction in percent parasitemia may be due to α- isomer and the activity is maintained by the β- isomer.
Flavonoid antioxidants act as scavengers of free radicals by rapid donation of a hydrogen atom.