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In 2020, China's poverty alleviation has made decisive achievements, and the regional overall poverty problem and the absolute poverty problem of the rural population in China have been basically solved. But when the national poverty alleviation policy is optimized and adjusted, enhancing the endogenous sustainable development capacity of poverty-stricken areas and households has become the focus of consolidating the achievements of poverty alleviation and comprehensively promoting rural revitalization. Livelihood resilience, which focuses specifically on the ability of individuals to withstand external shocks and disturbances with their own capital, is a necessary attribute for achieving sustainable development. However, previous studies paid less attention to the disturbance of social factors and the driving effect of social environmental factors on the construction of livelihood resilience. Using 518 farmer survey data from Shaanxi Province, this paper explores the mechanism by which farmers individual capital affects their livelihood resilience through ICT adoption. Statistical analysis shows that social networks are the most important factor for farmers to resist risks and develop sustainably. The empirical study finds that farmers' individual capital and ICT adoption are important variables in the construction of farmers' livelihood resilience. Specifically, the more individual capital farmers possess, the more likely they are to have higher levels of livelihood resilience. The higher the level of ICT adoption by farmers. the more they tend to have higher levels of livelihood resilience. At the same time, the impact mechanism of farmers' individual capital and ICT adoption on livelihood resilience shows an intermediary effect: individual capital use of digital technology livelihood resilience. In this path. ICT adoption partially mediates the impact of individual capital on the level of livelihood resilience, and the indirect effect of ICT adoption on livelihood resilience is greater than the direct effect, and the results are robust. Further analysis shows that there is no significant gender difference in the impact of farmers' individual capital on livelihood resilience. Compared with previous literature this paper expands on the following aspects: first, the risk factors of most previous studies on livelihood resilience are natural and ecological. In this paper, the risk scenario of livelihood resilience was extended from relatively sudden natural ecology to changes in social factors, and the construction mechanism of livelihood resilience under changes in the social environment was constructed. Second, previous studies on livelihood resilience rarely included the effects of ICT adoption. In this paper, ICT adoption is included in the relationship between farmers' individual capital and livelihood resilience. Third, most previous literature finds that ICT adoption exacerbates the digital divide between urban residents and rural residents. However, this study finds that in the face of risks, digital technology, as an external social construction, also brings about social integration, and ICT adoption essentially plays a role in the redistribution of resources and factors between urban and rural areas and between regions. An important policy implication of this study is that in terms of effectively connecting the achievements of poverty alleviation and rural revitalization, the path of individual capital-digital technology-sustainable development should be generally followed, which would improve farmers' livelihood resilience and endogenous sustainable development ability in the face of external risks. [ABSTRACT FROM AUTHOR]

As typical representatives of high-quality development, world-class enterprises are the fundamental direction and goal of Chinese enterprise development. Building a group of world-class enterprises with global competitiveness and building up the strength, quality, and size of Chinese enterprises are important tasks to accelerate the construction of Chinese path to modernization in the new era and new journey. However, there is still a significant disagreement between the academic and business communities regarding the cognition and understanding of world-class enterprises. There is no consensus on the basic issue of what world-class enterprises are and what characteristics they possess. Therefore, a “cognitive jungle” of world-class enterprises has emerged, which has constrained China's practice of building world-class enterprises. Based on a systematic review, induction, and evaluation of existing research on world-class enterprises at home and abroad, this article deeply deconstructs and redefines the concept and characteristics of world-class enterprises. Research has found that: firstly, the divergence in the definition of world-class enterprises focuses on the differences in the definition of “scope”, “degree”, and “elements” of world-class enterprises, with different limiting conditions forming the concept of world-class enterprises in a broad, narrow, and medium sense. Secondly, through a re-examination of the “scope”, “degree”, and “elements” of world-class enterprises, world-class enterprises could be defined as benchmark enterprises with outstanding core competitiveness, leading value creation capabilities, and excellent sustainable development capabilities globally or in specific industries and fields. And world-class enterprises could be divided into global world-class enterprises and industry-specific world-class enterprises. Thirdly, the existing research perspectives on characteristics recognition of world-class enterprises include characteristics recognition that focuses on resource capabilities, characteristics recognition that focuses on behavioral performance, and characteristics recognition that is diversified and balanced, but they have varying degrees of limitations. Fourthly, the reconstruction of the characteristics of world-class enterprises should cover two levels: explicit representation and implicit elements. For the former, comprehensive value leadership is the overall manifestation of a world-class enterprise, with product excellence as the primary condition, innovation leadership as the core condition, governance modernization as the basic condition, and brand excellence as the high-level condition, all of which constitute the concrete representation of the “four in one” of a world-class enterprises. For the latter, the long-term mission driven, strategic flexibility in responding to change with change, dynamic ability to traverse cycles, symbiotic and mutually beneficial ecosystems, and unique and outstanding cultural genes drive world-class enterprises to move towards and maintain success at a deep level. Compared with the existing researches, this paper deepens and expands in the following two aspects. First, this paper goes beyond the previous definition of empiricism, and structurally analyzes and defines the concept of world-class enterprises from the perspective of three components: “scope”, “degree” and “element”. Secondly, beyond the previous single perspective, this paper logically and consistently identifies the characteristics of world-class enterprises from two levels: explicit features and implicit elements. This study helps government departments and the business community to have a more scientific understanding and cognition of world-class enterprises, and provides direction guidance for Chinese enterprises to build world-class enterprises in practice. [ABSTRACT FROM AUTHOR]

The Yangtze River Delta is the source of national innovation with the most concentrated advanced manufacturing industry, the solidest development foundation, and the most active and potential innovative economy. The construction of a national computing hub node in the "Channel Computing Resources from the East to the West" project is great significance to accelerate the upgrading and transformation of the advanced manufacturing industry in the Yangtze River Delta. Therefore, this paper explored the logical mechanism, practical challenges and development path of the digital transformation of manufacturing industry enabled by the national computing hub node in the Yangtze River Delta based on the current difficulties and problems encountered in the digital transformation of the manufacturing industry, with a view to promoting the transformation and upgrading of manufacturing industry and the green and high-quality development of the Yangtze River Delta region. [ABSTRACT FROM AUTHOR]

[Purpose/Significance] Based on the research of library transformation from the mode of "high-speed growth" to "high-quality development", this paper addressed the green development as one of the key routes for the transformation of public libraries and provides a multifaceted definition of green development and sustainability from home and abroad as applied to public libraries. [Method/Process] By investigating the transformation and development of domestic libraries in recent years and drawing on the experience from a range of international projects, this paper found out how dedication to be sustainable and green action has become more central and widespread in the library sector worldwide. Successful examples were drawn from IFLA Green Library Award as well as other innovative programs, services, buildings and projects based on increasing consciousness around the green development. This paper integrated an overview of various efforts to define the green library and arguements for sustainable libraries. At the same time, some typical examples of libraries' environmental awareness and sustainability have been presented. [Results/Conclusions] This paper puts foreword the key areas to implement the concept of green development in libraries, including library buildings, facilities and equipment, collections, information services, operational management as well as library strategic development plan, thus incorporating the library development in the scope of environmental, economic and social sustainability. Libraries should take into account the environmental impact of their building as well as their own activities. They should also consider their specific features, not just the criteria for green buildings and offices. Besides, they can promote recycling and sharing in the community in various ways. These actions can raise environmental friendliness as a value and signals the importance of environmental issues to the community. In the aspect of resource development, the basic task of libraries is to ensure open and easy access to reliable information, which includes environmental information. With the provision of information, libraries should also promote the information retrieval skills ofthe community in order to improve the information literacy of the public with regard to environmentally sustainable awareness. In conclusion, libraries should create an environmental strategy that defines the means and objectives of the environmental work. It is important to raise awareness of the role public libraries can play in the near future, showing proofoftheir contribution to UN 2030 Agenda and SDGs by measuring and gathering evidence of their performance, namely the access to information and knowledge, access to information infrastructures as well as literacy competences development. [ABSTRACT FROM AUTHOR]

In order to improve the utilization ratio of pesticides and reduce the harm of pesticides to the environment， nano loss control chlorpyrifos (NLCC) is fabricated by loading chlorpyrifos (CPF) on attapulgite(ATP). The loss control effect of ATP on CPF is studied by filter paper and sugarcane leaves and the interaction of NLCC system is studied by SEM，FT-IR，XRD，and so on. Furthermore，the loss control effect of ATP on CPF is also investigated by field test. These results show that ATP could adsorb CPF by hydrogen bonds and the adhesion amount of CPF before and after rainfall increases by 5. 4 μg and 5. 6 μg， respectively. The maximum loading amount of attapulgite to chlorpyrifos is 500 mg/g. In addition，the mortality of corn borers increases by 20% respectively. Moreover，the field test also shows that NLCC could reduce 21% of sugarcane damaged by pests，4. 3% of sugarcane stalks damaged by pests，and the wormholes of 2 per plant and increase the height by 23. 1 cm. These results indicate that NLCC could effectively reduce pests and promote the growth of sugarcane. Therefore，this study provides a simple and practical method for reducing pesticide loss，improving pesticide utilization rate，and decreasing environmental pollution，which has a high application value for the development of green agriculture. [ABSTRACT FROM AUTHOR]

Based on the panel data of 204 prefecture-level cities in China from 2004 to 2019, this paper used the double-difference method to study the impact of ecological civilization demonstration area policy on ecological efficiency with the help of“quasi-natural natural experiment”from ecological civilization demonstration area. Results showed as follow.（1）Overall, the implementation of ecological civilization demonstration area policy has significantly promoted the improvement of ecological efficiency. At the same time, various robustness tests such as excluding the influence of other policies, counterfactual testing, replacing sample data, and propensity score matching-based difference-in-difference（PSM-DID）were carried out to ensure the reliability of the results.（2）Heterogeneity analysis showed that ecological civilization demonstration area policy had a more significantly effect on the improvement of ecological efficiency in the large cities and cities in eastern and central regions.（3）Mechanism analysis showed that ecological civilization demonstration area policy can improve the ecological efficiency of cities by driving technological innovation and optimizing industrial structure. Accordingly, it is proposed to further summarize the effective practices of the ecological civilization demonstration area policy. And a combination of policies should be carried out based on the consideration of heterogeneity factors. In addition, it is also necessary to focus on transforming and upgrading advantageous industries and stimulating innovation capabilities. [ABSTRACT FROM AUTHOR]

Uncaria rhynchophylla contains large amount of alkaloids and abounds in natural resources, and has the function of heat-clearing for calming liver and wind-calming for calming frightened. In order to make clear the material basis of stems and leaves of U. rhynchophlla, in this paper, the chemical constituents of stems and leaves from U. rhynchophylla and their antitumor activities were studied. The extracts were isolated and purified by using silical gel, Sephadex LH-20, semi-HPLC, and the structures of the compounds were identified by physicochemical property and spectrum analysis. The antitumor activities of chemical constituents against K562, HEL cell lines were assessed by MTT method. Seven compounds were isolated and identified from stems of U. rhynchophylla as 3, 4, 5-trimethoxyphenol(1),scutellarin(2), isohydrohydrogenine(3), dehydroramine(4), Vallesiachotamine(5), isorhynchophylline(6), rhynchophylline(7). Twelve compounds were isolated and identified from leaves of U. rhynchophylla as octadecanol(8), β-sitosterol(9), tridecanoicacid(10), 2-methyl-5,7-dihydroxy-chroone-7-O-β-D-glucopyranoside(11), oleanolic acid(12), quercetin(13), ivy aglycone(14), kaempferol(15),(6R, 9R )-9-hydroxymegastigman-4-en-3-one(16), ursolic(17), epicatechin(18), emodin methylether(19). The results of antitumor activities were as follows:(1)Compounds 3 and 5 inhibited the activities of HEL cell lines, and IC50 values were 17.96 and 73.01 μg·mL-1; Compound 5 inhibited the activities of K562 cell lines, and IC50 values were 16.45 μg·mL-1, which indicate that some compounds from stems of U. rhynchophylla have certain antitumor activities.(2)Compounds 1, 8,10 and 16 were isolated from this plant for the first time. This study shed the scientific light on reasonable utilization and sustainable development of plant resources. [ABSTRACT FROM AUTHOR]

Currently more coal resource is buried in deep and more high-quality resource is located in the west of China. It makes a deep mining and a mining in the west become the new normal of coal resources exploitation. Thus a green mine construction, green mining development and green mining propulsion are imperative. This paper puts forward a"mining-dressing-backfilling+X"technical conception of green mining of coal resources. That is an underground integrated production system, which is integrated coal mining, coal-waste separation, and gangue backfilling with "active control of strata movement, gob-side entry retaining, gas extraction, disaster prevention, water-preserved-mining". The system forms a coal mining-dressing-backfilling+X(control, retain, extraction, prevention and preserved) collaborative production mode. The paper defines the"mining-dressing-backfilling+X"technical connotation and framework of greenmining, expounds "mining-dressing-backfilling+X"evolution of four generations, analyzes the specific technical advantages of its practice of green mining and gives the scientific engineering design method. The paper elaborates five aspects of typical "mining-dressing-backfilling + X"technology corresponding technical principle, engineering requirements, design process and methods, key technology and process equipment. Engineering practice of the Tangshan Coal mine, Zhaizhen Coal mine and 12 th Coal mine of Pingdingshan Group has respectively proved that "mining-dressingbackfilling+ control", "mining-dressing-backfilling + retain", "mining-dressing-backfilling + extraction " technologies have a remarkable technical superiority and the engineering demonstration effect. "Mining-dressing-backfilling + X "green mining extension in the future combines "mining-dressing-backfilling+processing", "mining-dressing-backfilling+intelligent", "mining-dressing-backfilling+adjustment"and "mining-dressing-backfilling +coordination". The overall formation of the "mining-dressing-backfilling+X"technology system can provide a strong technical support for the realization of green mining of coal and associated resources. [ABSTRACT FROM AUTHOR]

Aiming at the characteristics that series of environmental and ecological problems must be accompanied during opencast mining operations,the authors propose the concept of surface mining disturbance effect quantification and evaluation.This paper expounds the connotation and characteristics of Surface Mining Disturbance Index (SMDI).The SMDI is a comprehensive index which considers ecological damage and repair,mining technology and process optimization,energy consumption structure optimization,pollutant emission and treatment,production management and other aspects of the problem,uses multi-disciplinary theory to solve the difference between resource conditions,mining conditions,regional,coal and pollutant types etc.Ultimately,the system uses the numerical number between -100 to +100 to make an evaluation or prediction of SMDI temporal and spatial variation.This paper studies the basic principles of constructing the evaluation index system,and puts forward the basic framework of the index system,which includes 2 categories of all the 23 evaluation indexes,and points out the synthetic method of the SMDI. [ABSTRACT FROM AUTHOR]

The energy endowment characteristics of "relatively rich in coal, poor in oil, less natural gas, and uranium deficiency"in China result in that the coal resources as the China’s main energy will not change in the short term.Meanwhile, the relatively abundant coal resources are still the most stable and cost-effective competitive minerals in China.There should be a clear understanding that it is unrealistic, unwise and unscientific to abandon the actual energy choices based on coal to solve China’s energy problems. However, it should be noted that the coal resources have brought about environmental pollution, ecological damage, waste of resources, and high emissions in the whole process from geological exploration to development and utilization.Therefore, the development of the coal industry in China will certainly undergo some significant changes in the new era.Implementing scientific exploration and development, clean utilization, and low-carbon consumption, characterized by science, safety, ecology, high efficiency, standardization, digitization, and intelligence, is the only way to realize the sustainable development of China’s coal industry.Aimed at the challenges and opportunities for the coal industry in China, the present situation and existing problems of coal resources in the whole process from geological exploration to development and utilization is analyzed, and the strategic thinking of building an upgrade version of main energy( coal) industry in China is proposed.In this paper, the authors focus on 11 key scientific and technological problems faced in the process of realizing the upgrade version of China’s main energy( coal) industry, namely the problems of comprehensive coordination, green exploration, deep exploration, and intelligent exploration for coal resources in the process of geological exploration; the problems of green, safety, recovery rate, occupational health, and high benefit in the coal development process; the clean and low-carbon problems in the process of consumption and utilization.Meanwhile, the corresponding exploratory solutions are put forward.It is of great theoretical significance and practical value to promote the transformation and upgrading for China from a large coal producing country to a powerful coal industrial country, and also to address the sharp contradiction between China’s current economic and social development and the protection of ecological environment. [ABSTRACT FROM AUTHOR]

Water resources destruction and geological environment changes caused by mining in ecologically fragile areas of western China have seriously restricted the sustainable development of economy, society and environment in mining areas. Through reviewing the research progress of water-preserved coal mining and carrying capacity of geological environment in coal mining areas, and combining with the current situation of geological environment in western China rich in coal and short of water, the research framework of carrying capacity of geological environment based on the concept of water-preserved coal mining is proposed. It is considered that the function mechanism of "coal mining activity-water resource destruction-geological environment effect"should be systematically analyzed by combining the concept of water-preserved coal mining with the theory of carrying capacity of geological environment. The methods of attribute analysis, ecological demand analysis, numerical analysis and catastrophe theory should be used in studying the carrying capacity of geological environment. In particular, the quantitative method, comprehensive evaluation method and the classification method of carrying status and carrying capacity of geological environment should be investigated. By means of simulation experiment, the relationship data between the geological environment and the critical value of mining intensity under the carrying capacity of typical coal mine area are obtained. Then the technological method of coal mining under water-containing for controlling and alleviating the geological environment problems in coal mine area is extracted to determine the reasonable mining intensity and scale. On the basis of the research of carrying capacity, this paper put forward the collaborative monitoring method for the influencing factors of carrying capacity of geological environment, and the criterion of bearing capacity early warning grade of carrying capacity. The connotation and basic research ideas of geological environmental carrying capacity based on the concept of water-preserved coal mining will enrich the scientific connotation of water-preserved coal mining and geological environmental carrying capacity, and provide a theoretical and technical support for the coordinated development of coal resources and water resources protection in the fragile ecological environment areas of western China. [ABSTRACT FROM AUTHOR]

Coal mining with water protection is an inevitable choice for the sustainable development of ecologically fragile mining areas. The study and application of coal mining with water protection is an urgent problem to be solved in coal development planning, construction and production in northwest China. Taking Yushen mining area in northern Shaanxi Province as an example, this paper studies the types of water-preserved coal mining coalmines in combination with the quantity distribution of shallow water resources( water-preserved coal mining target seam) and the impact of coal mining on shallow water resources. Firstly, the spatial occurrence structure characteristics of eco-water-coal measures strata in the study area are analyzed. Also, the eco-geological environment types for the purpose of water-preserved coal mining are proposed, which are divided into oasis type with phreatic water and bottomland in desert, oasis type with surface water and valley river, loess gully type with surface runoff, and regional deep groundwater enrichment type. Secondly, the distribution of total storage per unit area of shallow water resources is calculated and determined. Then, based on the influence degree of coal mining on ecological layer and shallow water, four types of environmental engineering geological patterns( basically unaffected model, gradually restored model after destruction, gradually deteriorated model and disaster model) are proposed. Based on the analysis of the key indicators affecting the division of environmental engineering geological patterns, including the height of the water-flowing fractured zone and the mining water-resisting of residual aquiclude, etc., the zoning threshold and determination method for environmental engineering geological patterns is established. Finally, based on the distribution characteristics of shallow water resources and environmental engineering geological patterns, the grade types of water-preserved coal mining coalmines are put forward for the first time, which is divided into normal mining mine, water-preserved coal mining first-class mine, water-preserved coal mining second-class mine and water-preserved coal mining third-class mine. [ABSTRACT FROM AUTHOR]

In this paper, ligent GIS system of underground coal mine,the intelligent development plan and the working face design, the intelligent roadway rapid drivage technology, the intelligent technology of fully mechanized coal face, the intelligent main/ auxiliary transportation technology, the hazard sources intelligent perception and early warning technology, the intelligent washing system,the intelligent comprehensive support technology, and the comprehensive control system and operating platform of mine Internet of things. Furthermore,the development direction of intelligent open pit coal mine was expounded. The development ideas of constructing the information system of open pit coal mine, developing the intelligent continuous mining technology of open pit coal mine, establishing the integrated space-air-ground safety warning system in open pit coal mine,and promoting the coordinated green development of ecological environment in open pit coal mine were put forward. It is important to vigorously develop intelligent manufacturing of coal mining equipment, improve the reliability and adaptability of coal mining equipment, promote the robotized substitution of coal resource development, and provide intelligent equipment support for intelligent development of coal mining. Some policy suggestions were put forward, such as increasing policy support for intelligent development of coal mine, setting up special projects for the intelligent standard system construction of coal mine,and establishing a national experimental platform for the intelligent technology innovation of coal mine. a scientific idea was proposed,i. e. ,the intelligent coal mine is the core technology support for the coal industry development. The definition and general requirements of intelligent coal mine were expounded. The development goal of intelligent coal mine is to build smart coal mine. The connotation and relationship of coal mine intelligence, wisdom, informationization and digitalization were analyzed. Also,the construction principles and goal of intelligent coal mine were proposed. The top-layer design of intelligent coal mine was carried out,and the ideas of the integrated planning development mode of intelligent coal mine, the scientific design on the overall framework of intelligent coal mine,and the construction of 100 intelligent demonstration coal mines were put forward. In addition,the main development routes of intelligent coal mine were discussed including the precision geological exploration and 4d- inteli [ABSTRACT FROM AUTHOR]

On the basis of a brief overview of mining with backfilling history and the objectives, requirements and difficulties of developing modern mining with backfilling technology, this paper systematically introduced the research progress of fully mechanized mining with solid backfilling technology, focused on the expounding the strata movement theory of mining with dense backfilling, including equivalent mining height theory of strata movement control, continuous media mechanics model of strata movement, calculation formula of strata movement, and stope rock pressure and support stress analysis, which are the prerequisites of the new technology. And then detailedly introduced the system, equipments and technics of fully mechanized mining with solid backfilling technology, and the engineering examples of large-scale mining with backfilling under dense buildings, island village coal pillar, near the loosen aquifer and under the large embankment. [ABSTRACT FROM AUTHOR]