Ideas and Measures for Promoting Modernization of Tax Administration in the New Era in the Context of Smart Tax Construction

The practice of China's tax modernization construction has accumulated rich experience for the modernization of tax collection and management, while the new era, accelerating the modernization construction with Chinese characteristics, has put forward new requirements of the times for the modernization of tax collection and management. The Opinions on Further Deepening the Reform of Tax Collection and Administration of the Central Office and the State Office pointed out that it is necessary to comprehensively push forward the digital upgrading and intelligent transformation of tax collection and administration, and to holistically and integrally improve the effectiveness of tax governance. The State Administration of Taxation has also repeatedly requested that the construction of smart tax supported by tax big data should be pushed forward to provide more powerful data support for the modernization of tax collection and management. This paper takes smart tax construction as the research background, analyzes the problems of modernization of tax collection and administration in the new period, and on this basis puts forward the suggestions of optimizing system design, strengthening tax governance by numbers, transforming the way of tax management and service, and perfecting the mechanism of talent cultivation, etc., in an attempt to explore the path of development of modernization of tax collection and administration

SWOT Analysis of Agricultural Producers in the Supply Chain of Chinese Agro-products

On the basis of defining the producers in the supply chain of agricultural products, the SWOT analysis is adopted to analyze the advantages, disadvantages, opportunities and threats of producers in the supply chain of Chinese agricultural products. The paper analyzes the advantages of producers in the supply chain of agricultural products from three aspects including land resources, technology level of producers and input costs. The disadvantages of producers in the supply chain of agricultural products are analyzed from three aspects including scale level, mechanization and technology level and profit level. The opportunities of producers in the supply chain of agricultural products are analyzed from me aspects of laws, policies, Capitals and technologies. The threats confronted by the producers in the supply chain of agricultural products are analyzed from foreign producers, negotiation control of supply chain of agricultural chain, environmental protection and quality safety standard. On the basis of the analysis, the relevant suggestions on facilitating the interests of producers in the supply chain of Chinese agricultural products are put forward, including fully displaying the advantages of land resources; improving the knowledge and technology level of supply chain of agricultural production; establishing the alliances of producers of agricultural products to expand production scale; improving the quality of agricultural products to satisfy the relevant safety quality standard and environmental protection standard

ZnO nanoparticles as a luminescent down-shifting layer for photosensitive devices

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SWOT Analysis of Agricultural Producers in the Supply Chain of Chinese Agro-products

On the basis of defining the producers in the supply chain of agricultural products, the SWOT analysis is adopted to analyze the advantages, disadvantages, opportunities and threats of producers in the supply chain of Chinese agricultural products. The paper analyzes the advantages of producers in the supply chain of agricultural products from three aspects including land resources, technology level of producers and input costs. The disadvantages of producers in the supply chain of agricultural products are analyzed from three aspects including scale level, mechanization and technology level and profit level. The opportunities of producers in the supply chain of agricultural products are analyzed from me aspects of laws, policies, Capitals and technologies. The threats confronted by the producers in the supply chain of agricultural products are analyzed from foreign producers, negotiation control of supply chain of agricultural chain, environmental protection and quality safety standard. On the basis of the analysis, the relevant suggestions on facilitating the interests of producers in the supply chain of Chinese agricultural products are put forward, including fully displaying the advantages of land resources; improving the knowledge and technology level of supply chain of agricultural production; establishing the alliances of producers of agricultural products to expand production scale; improving the quality of agricultural products to satisfy the relevant safety quality standard and environmental protection standard.Supply chain of agricultural products, Producers, SWOT analysis, China, Agribusiness,

Study of Wellbore Instability and Collapse Mechanism for a Layered Continental Shale Oil Horizontal Well

The shale oil horizontal wells in the Songliao Basin are affected by a lack of mature theories, technologies and experiences in the direction of wellbore stability. Wellbore collapse may occur, and in severe cases, the wellbore may be scrapped, resulting in huge economic losses. Therefore, aiming at addressing the above problems, rock mechanics experiments were carried out. Based on the theories of elasticity and rock mechanics, this paper considers not only the influence of the bedding plane, but also the influence of hydration on the strength weakening of the shale body and the bedding plane. The analysis shows that no matter under which in situ stress mechanism, the wellbore in the vertical well section is the most stable, and when the inclination angle is approximately 45°, the wellbore is most likely to be unstable. Changes in water content do not affect the most stable or unstable regions. Under the same conditions, the equivalent density of collapse pressure increases with the increase in water content. In addition, field examples are also analyzed to verify the accuracy of this model, which can provide a theoretical and technical basis for the safe construction of continental shale oil horizontal wells

Study of Wellbore Instability and Collapse Mechanism for a Layered Continental Shale Oil Horizontal Well

The shale oil horizontal wells in the Songliao Basin are affected by a lack of mature theories, technologies and experiences in the direction of wellbore stability. Wellbore collapse may occur, and in severe cases, the wellbore may be scrapped, resulting in huge economic losses. Therefore, aiming at addressing the above problems, rock mechanics experiments were carried out. Based on the theories of elasticity and rock mechanics, this paper considers not only the influence of the bedding plane, but also the influence of hydration on the strength weakening of the shale body and the bedding plane. The analysis shows that no matter under which in situ stress mechanism, the wellbore in the vertical well section is the most stable, and when the inclination angle is approximately 45°, the wellbore is most likely to be unstable. Changes in water content do not affect the most stable or unstable regions. Under the same conditions, the equivalent density of collapse pressure increases with the increase in water content. In addition, field examples are also analyzed to verify the accuracy of this model, which can provide a theoretical and technical basis for the safe construction of continental shale oil horizontal wells

Influence of plastic aggregate geometry on strength properties of cement-stabilized macadam

Abstract In order to improve the toughness and flexibility of cement-stabilized macadam and inhibit crack formation and propagation, the influence of plastic aggregate geometry on the strength properties of cement-stabilized macadam is studied. The surface roughness of plastic aggregate was designed into Ra 12.5 and Ra 25. When the content of plastic coarse aggregate was gradually increased from 4 to 8%, 12%, 16%, 20%, and 24%, the compressive strength, splitting strength, and the tensile-compression ratio of the cement-stabilized macadam made of aggregate with rough surface texture were found higher than those of aggregate with smooth surface texture. The rough cylindrical, spherical, spindle, and dumbbell-shaped plastic coarse aggregates were designed and prepared for testing. The test results showed the maximum compressive strength, splitting strength, and tensile-compression ratio of cement-stabilized macadam with the dumbbell-shaped plastic coarse aggregate. The tensile-compression ratio increased by 15.2% compared to natural aggregate cement-stabilized macadam. The results show that under the same conditions, the plastic aggregate with different geometry can improve the compressive and splitting strengths of cement-stabilized macadam and significantly improve the toughness and flexibility, with dumbbell-shaped plastic coarse aggregate having the greatest improvement, especially compared with natural aggregate cement-stabilized crushed stone. This research provides insights for improving pavement engineering quality and new ideas for utilizing waste plastics

Comparative Study on the Effects of Four Plant Protein Sources on the Liver and Intestinal Health of Largemouth Bass, Micropterus salmoides

The effects of plant protein sources (PPSs) on the health of the liver and intestine of the largemouth bass, Micropterus salmoides, were compared to verify the potential damaging effects of dietary fiber (DF). A diet containing 55% fish meal (FM) was used as the control. The test diets contained 25% soybean meal (SBM), rapeseed meal (RSM), cottonseed meal, or peanut meal, and the FM content was decreased to 30%. The protein and lipid contents of these five diets were balanced by casein and oil. Fish were raised for 8 weeks. The fish fed the diet containing PPS showed a trend of decreasing growth and apparent digestibility coefficients. The contents of total bile acid, lipid, and collagen in the liver were increased, and the mRNA expression levels of genes encoding inflammatory factors and enzymes involved in de novo fatty acid synthesis and bile acid synthesis were upregulated. Both the lipid and collagen contents in the liver were positively correlated with the DF content in the diet significantly. Morphology and histology showed reduced liver size, hepatic steatosis, and fibrosis in fish fed diets containing PPS. The lowest hepatosomatic index was observed in fish fed the SBM diet, and the most severe damage was observed in fish fed the RSM diet. No obvious histological abnormalities were observed in the hindgut. The bile acid profile in the liver could be used to distinguish the types of PPS very well by Fisher discriminant analysis. These results indicated that 25% of each of the four PPSs in the diet exceeded the tolerance range of largemouth bass and caused liver damage, which might be mediated by bile acid. DF in PPS might be an important agent contributing to liver damage