Abstract: The growing global energy demand has triggered technological challenges in the field of oil field extraction. Intelligent oilfield technology has become the focus of the petroleum industry due to its potential to increase production, reduce costs, and optimize operations. This article delves into the current status, challenges, and future development directions of intelligent oilfield technology. Read More

Abstract: As the proportion of consumption in China's gross domestic product (GDP) increases and its role as a driving force for economic growth strengthens, the impact of consumption on the resource environment and carbon dioxide emissions is becoming increasingly evident. Production is for consumption, and consumption in turn promotes production; consumption determines production and guides the direction and development trend of production. Green and low-carbon consumption is not only the responsibility of consumers, but also puts forward higher requirements for producers: the whole process from the procurement of raw materials, product production and circulation, product use, recycling of end-of-life products and final treatment and disposal are all based on low-carbon standards, forcing the supply-side structural reform to promote green and low-carbon development. The government can guide green and low-carbon consumption by setting up incentives and constraints, increasing the supply of green products, organizing government procurement, and taking the lead in policy measures, but the fundamental measure is to raise the public's awareness of environmental protection and consciously practice green and low-carbon consumption. Read More

Abstract: With the growing market of Chinese medicinal materials in China, Polygonatum odoratum is popular among the public as the leading medicinal materials in Hunan Province, and Polygonatum odoratum is recognized as the first batch of Chinese medicinal materials with the same origin as food and medicine by the National Health Organization. As one of the main active ingredients, its polysaccharide has anti-aging, anti-oxidation, immune regulation, hypoglycemia and other effects. In this paper, Extraction and purification methods, structure elucidation and characteristics, biological activity and mechanism, innovative application, biosynthesis mechanism research and development prospect of this herb were reviewed. Read More

Abstract: In view of the serious problem of pulverized coal production in the process of coalbed methane development, the experimental conditions were set up by using the production characteristics of coalbed gas wells, and the static sedimentation experiments and dynamic sedimentation and migration experiments of pulverized coal particles in the wellbore of coalbed methane wells were carried out. The static settling velocities of pulverized coal particles with different sizes were obtained in the static settling experiment of pulverized coal. Discovery by dynamic transport experiments, when the drainage speed is greater than 0.035m/s, 40-400 mesh pulverized coal will be carried and transported. The research results have important guiding significance for optimizing on-site drainage and mining parameters. Read More

Abstract: Based on China's energy structure, this work combines the emerging liquid air energy storage technology with the traditional thermal power generation technology to construct a steam-liquid air integrated energy supply system, realizing the integration and development of new energy and traditional technology. The energy supply system mainly uses surplus energy to drive the compressor to compress, cool and liquefy the air and then inject it into the low-temperature storage tank for storage, and a part of the electricity consumed in the liquefaction process is converted into low-temperature cold energy for storage. The heat energy generated by the compression process can be supplied to heat users. The stored cryogenic energy can be used to cool the circulating mass of the power plant, lowering the condensation temperature and improving efficiency. The system is also highly flexible in terms of peak shaving and valley filling under different conditions and with different operating modes to meet different energy supply requirements. At the same time, the system can be combined with various energy supply methods (wind, solar, etc.) to further improve its energy efficiency and economy, implementing the concept of distributed energy utilization. Read More

Abstract: This thesis analyzes the source of soil chromium pollution, its harmfulness, the occurrence form, migration and transformation of chromium in soil in detail. At the same time, the mechanism of chemical and bioremediation technology to treat soil chromium pollution was also discussed. From the statistical data analysis of soil chromium pollution sources, the main sources of soil chromium pollution are atmospheric sedimentation, agricultural fertilization, sewage irrigation, non-ferrous metallurgy and the geochemical cycle of chromium in nature. In nature, chromium mainly exists in two stable forms of trivalent chromium and hexavalent chromium, Cr(VI) is a toxic chromium valence state, which can penetrate deep into the soil, destroy the soil structure, and cause serious pollution to the soil. Therefore, the key to the remediation of chrome-contaminated soil is to remove the free Cr (VI). Read More