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To understand the reservoir property and hydrocarbon accumulation conditions of the Middle and Upper Ordovician intraplatform shoal between ultra-deep main strike-slip faults in Fuman Oilfield of the Tarim Basin, China, the main strike-slip faults in and around well FD1 in the basin were analyzed in terms of sedimentary facies, sequence stratigraphy, intraplatform shoal reservoir property, and oil and gas origins, based on drilling data. The Yingshan Formation intraplatform shoal between the main strike-slip faults is superimposed with low-order faults to form a new type of hydrocarbon play. Firstly, hydrocarbons generated from the Lower Cambrian Yuertusi Formation source rocks vertically migrated into the second member of Yingshan Formation through the main strike-slip faults, and then migrated laterally until they were accumulated. A small amount of oil from Well FD1 came from the Yuertusi Formation source rocks in the mature stage, and a large amount of gas originated from oil cracking in the ultra-deep reservoirs. Therefore, the secondary gas condensate reservoir in Well FD1 is characterized by high gas to oil ratio, dry gas (dryness coefficient being 0.970) and hybrid origin. This new type of hydrocarbon play characterized by intraplatform shoal and low-order fault suggests a prospect of continuous hydrocarbon-bearing area in Fuman Oilfield, which will expand the ultrap-deep oil and gas exploration in the oilfield.

Eighteen sun-dried tea samples were selected from six major tea-producing regions in Yunnan Province, namely Xishuangbanna, Pu'er, Lincang, Baoshan, Dehong and Yuxi to use for this study. In this study, these samples' biochemical components such as moisture, water leachate, caffeine, tea polyphenols and free amino acids were tested and their sensory evaluations were conducted. The quality differences of sun-dried tea from different regions in Yunnan Province were investigated by means of index correlation analysis, principal component analysis, cluster analysis and quality appellation analysis, and high-quality production regions were screened. The results showed that the quality indicators of different regional sun-dried tea had differences and there were some correlations among the quality indicators. Among them, the water leachate content showed correlation with the content of tea polyphenol and leaf base (P

In order to reveal the main composition of walnut globulin and its antioxidant activity in vitro, defatted walnut meal was used as raw material to separate and purify the globulin. And 2,2'-azido-bis(3-ethylbenzothiazoline-6-sulfonic acid) (2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid), ABTS) cationic radical scavenging ability was used to evaluate its antioxidant capacity, after further defatting, the crude walnut globulin extract was extracted according to the Osborne fractionation method, and then the main protein components were separated and purified by HiTrapTM CaptoTM Q anion exchange column and SephacrylTM S 100HR gel filtration column. The results showed that the prepared globulin protein content was 51.53%, accounting for 15.3% of the walnut protein, and the isoelectric point was 3.8. The results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis showed that the molecular weight of the purified main protein component was 10.1 kDa. The major protein component in the active state consists of a 7S globulin vicilin Car i 2.0101 and 2S albumin. It was found that both crude globulin extract and purified protein component had good scavenging ability against ABTS+·, with IC50 values of 0.302 and 0.075 mg/mL, respectively, indicating that the scavenging ability of purified protein component was increased by more than 4 times. The research results could provide a theoretical basis for the development and utilization of walnut globulin.

As an important part of power system, the intelligent construction of power generation process is an important direction to promote the development of energy transformation in China. Combined with current situation and development trend of digital twin technology research, the concept and system of smart power generation were analyzed. Then the definition of digital twin in the field of smart power generation was proposed. Through function mapping, the digital twin architecture of smart power generation was constructed. A general method of deploying digital twin technology in smart power generation system was proposed. The application fields and modes of digital twin technology were summarized, and the main technology challenges in application were analyzed. The research results provide theoretical and methodological reference for the industrial development of digital twin technology in the field of power generation.

A series of seismic exploration technologies, such as “wide line and big combination” mountainous seismic acquisition, high steep structure pre-stack depth migration processing and deep tectonic modeling, were used to explore Kuqa deep structures. Pre-salt deep structures were preliminarily confirmed and a group of large structural traps were found. The research shows that the Kuqa foreland thrust belt is favorable for forming giant gas accumulations. Large-scale imbricated thrust systems can provide traps for large-scale oil and gas accumulation; excellent hydrocarbon source conditions and later intense charges of gas provide sufficient hydrocarbon reserves; the deep mass effective reservoir sandstone works as good reservoir volume for giant gas accumulations and thick gypsum deposits serve as good cap rocks. The geological characteristics of deep pre-salt structure giant gas accumulations typically have hydrocarbon distributions controlled by structural traps and structural gas reservoirs are dominant, reservoir properties of the deep thrust belts are generally poor, with fractures being the important controlling factor for hydrocarbon enrichment, oil and gas distribution is characterized by joint control of source and cap rock, stacking of multi-layer beds, and overall beds containing gas. Reserves are large, and single well productivity is high. Key words: Kuqa foreland thrust belt, Crassus' deep beds, pre-salt structure giant gas province, formation conditions, geological characteristics, Tarim Basin

In this study, 12 phenolic acids were theoretically calculated using the M06-2X functional. To explain their antioxidant and solvation effects, bond dissociation enthalpy (BDE), ionization potential (IP), proton dissociation enthalpy (PDE), proton affinity (PA) and electron transfer enthalpy (ETE) were calculated for each phenolic acid in the gas phase and solvents. The results showed that the BDE of gentianic acid (C5) in the gas phase was the lowest. In terms of BDE, caffeic acid (C6) had the strongest antioxidant effect in benzene, gentianic acid (C5) in acetone, and 3,4-dihydroxybenzyl alcohol (C2) in ethanol and water. In terms of IP, resveratrol had the best antioxidant activity in 4 solvents and in the gas phase. The antioxidant mechanism of phenolic acids was mainly related to hydrogen atom transfer (HAT). It was found that the ability of dehydrogenated anions and cations of phenolic acids to generate dehydrogenated free radicals was consistent with the influence of solvent polarity on IP, BDE, PDE, PA and ETE. In general, the antioxidant capacity of phenolic acids was the strongest in the weakly polar solvent acetone, followed by the strongly polar solvents water and ethanol, and phenolic acids had the weakest antioxidant capacity in non-polar solvents.

In order to solve the technical problem of soft rock engineering deterioration with expansive water-rich in Inner Mongolia Shanghaimiao Mining Co., Ltd., the experiment of the influence of water content on the mechanical properties of rock was carried out. It is found that the physical and mechanical properties of rock are the internal cause of engineering deterioration, while water is the external cause. Based on this, the concepts of “soft water treatment first” and “large water prevention and control small water management” are proposed, some technical measures are taken, such as drainage and mining, bottom arch water-proof, funnel water-connecting, deep-digging water nest, wide-spread awning, hose diversion, centralized drainage, concrete shotcrete sealing, etc. The engineering practice shows that the convergence rate of roadway section decreases from 40.752% to 10.673%, the recovery efficiency increases from 81,000 t/mon to 463,000 t/mon, and the tunneling efficiency increases from 190.6 m/month to 520.3 m/month.