Research Problem: In Abu Dhabi, limited implementation of OSH Regulations contributes to the general unawareness among employees and workers about occupational hazards and safety measures, resulting in slow responsive...Research Problem: In Abu Dhabi, limited implementation of OSH Regulations contributes to the general unawareness among employees and workers about occupational hazards and safety measures, resulting in slow responsiveness toward enforcement measures and a lack of self-regulatory approaches within companies. Purpose: The purpose of this study is to examine the implementation methods practised in Abu Dhabi with those in developed countries with established OSH regulatory bodies. Methodology: Qualitative and quantitative research methods were employed to gather primary research data. Workers from various industries in Abu Dhabi were sampled on purpose and asked to respond to questionnaires and interviews on OSH protocol awareness and implementation, and circumstances of workplace incidence. Results: The findings of this study showed that the enforcement of OSH requirements in UAE positively correlated to a reduction in the rate of work-related injury and improved business performance. The quantitative research data showed that the energy sector had the highest score (15) while the tourism sector had the lowest score (5.3) in occupational health systems and improvements in business efficiency and productivity. Implications: The outcomes of this study shed light on the importance of implementing OSH Guidelines for companies to empower their safety managers to fully enforce OSH requirements in their organisations. In conclusion, effective OSH enforcement requires cooperation between general workers and OSH managers and facilitation from business owners.展开更多
On 7 October,2022,the Biden administration released an updated version of the National Strategy for the Arctic Region based on new developments in the Arctic region and global affairs.This strategy emphasizes traditio...On 7 October,2022,the Biden administration released an updated version of the National Strategy for the Arctic Region based on new developments in the Arctic region and global affairs.This strategy emphasizes traditional security issues in the Arctic,attaches great importance to climate governance in the region,and advocates for restoring American leadership through international cooperation.In view of the strong influence of the United States(U.S.)in the Arctic region,the changes of the U.S.Arctic strategy will inevitably have an impact on China’s scientific researchrights,economic interests,and governance rights in the Arctic region.To respond to the new situation brought about by the changes in the U.S.Arctic strategy,China should take the initiative to maintain positive relationships with all Arctic countries,and continue its active participation in Arctic affairs.展开更多
Objective To study the strategic planning of drug regulatory science,the effectiveness and role of policy implementation in the United States so as to gain insights and make suggestions for further improving the strat...Objective To study the strategic planning of drug regulatory science,the effectiveness and role of policy implementation in the United States so as to gain insights and make suggestions for further improving the strategic planning of drug regulatory science in China.Methods Literature research method and comparative research method were used to compare and analyze the strategic planning of regulatory science in China and the United States.Results and Conclusion Drawing on the US experience,China should set goals based on mission and vision and identify problems,knowledge gaps,and key areas,then concrete measures can be taken to advance regulatory science.展开更多
With the research on and development of Genetically Modified Food (GMF), people's attitude toward GMF may fall into two divergent categories, typical- ly represented by the United States(US) and the European Unio...With the research on and development of Genetically Modified Food (GMF), people's attitude toward GMF may fall into two divergent categories, typical- ly represented by the United States(US) and the European Union(EU), respectively. The former follows a "sound science principle" and firmly objects to the precautionary principle, namely a permissive policy of positive support of and voluntary labelling on GMF; while the latter adopts a cautiously precautionary principle, requiring mandatory labelling and traceability. From the standpoint of regulatory principles, together with corresponding supervisory measures and relevant provisions, this paper compared the execution of directives and provisions on GMF from the initial policies enacted by the US and EU to current situation combined with the track and analysis of latest polic ies issued.展开更多
Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of ...Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of foreign language education poli-cies in Chinese Mainland and the United States in the 21 st century and finds that both China and the United States have regardedtheir national interests as the essential value orientation of their foreign language education policies. To be specific,the core valueorientation of foreign language education policies in China is to enhance its cultural soft power.In contrast,the core value orienta-tion of foreign language education policies in the United States is to safeguard its national security. Through the comparison of thedifferent value orientations of foreign language education policies of the two countries, the paper provides some reference for the for-eign language education policy-making in Chinese Mainland.展开更多
Having the two largest nursing workforces across the globe,both China and the United States have implemented licensure examinations to standardize the qualifications of registered nurse.China established the National ...Having the two largest nursing workforces across the globe,both China and the United States have implemented licensure examinations to standardize the qualifications of registered nurse.China established the National Nursing Licensure Examination(NNLE)in 1995.Like the National Council Licensure Examination for Registered Nurses(NCLEX-RN)in the United States,the NNLE has become an important link in the nurse registration process and contributed a lot in quality assurance and development of nursing profession.It may be necessary for the NNLE to learn from NCLEX-RN in several aspects,including increasing the frequency of exam,providing examinees with individualized services,and continuing reforming exam content and format.By better aligning the content and format of the examination with the current nursing paradigm and clinical requirements,nurses may enter the healthcare field better prepared to care for patients.Considering the magnitude of their nursing workforce,both China and the United States have great potential to serve as a role model for other developing countries as they look towards establishing national nursing education programs.As new policies around standardized nurse education in China take form,we urge that the NNLE be included alongside curricular reforms.As these reforms are implemented,continued research will be needed to evaluate the effectiveness of curriculum and licensure exam regulations upon nurse preparedness and quality of nursing care in China.展开更多
As the world’s top two economies,the United States(U.S.)and China face a number of similar water resources problems.Yet,few studies have been done to systematically compare policies and approaches on water resources ...As the world’s top two economies,the United States(U.S.)and China face a number of similar water resources problems.Yet,few studies have been done to systematically compare policies and approaches on water resources management between China and the U.S.This study compares water resources policies of China and the U.S.in the areas of national authority,water supply,water quality,and ecosystem use of the water to draw lessons learned and shed light on water resources management in China,the U.S.,and the rest of the world.The lessons learned from the comparison include six aspects.1)New paradigms of people-water harmony and a water-saving society are urgently needed to address the pressing water crisis and achieve the United Nations Sustainable Development Goals(UN SDGs).2)A comprehensive,consistent,forward-looking national policy is necessary to achieve sustainable use of water resources.3)Empowerment of river basin commissions with comprehensive authority over the integrative management of air,land,water,and biological resources in the river basin could significantly enhance the benefits and effectiveness of economic development and environmental protection.4)Expansion of water exchange through market mechanisms among water users promotes efficient and beneficial water uses.5)Use of water for ecosystem services should be an integral part of water resources management.China has set up a national blueprint for achieving ecological civilization;maintaining appropriate amounts of flow in rivers and lakes for maintenance of wildlife and fisheries and ecosystems should be institutionalized as part of this national strategy as well.6)By sharing their rich experiences and lessons in water resources management,economic development,and ecological protection with other countries,China and the U.S.can help the world to achieve global human-water harmony and the UN SDGs.展开更多
The purposes of this study are to assess the COVID-19 pandemic’s impacts on the dairy industries in China and the United States and to derive policy recommendations for enhancing the diary industries’resilience to p...The purposes of this study are to assess the COVID-19 pandemic’s impacts on the dairy industries in China and the United States and to derive policy recommendations for enhancing the diary industries’resilience to pandemics and other market shocks.Specifically,data from the two nations are used to analyze and compare the mechanisms through which the pandemic has affected their dairy industries and to discuss potential lessons from their experiences.The findings suggest that this pandemic has heavily affected the dairy industries in both China and the United States through similar mechanisms,such as decreased farmgate milk prices,disruption and difficulties of moving milk within the supply chains,worker shortages,increased production costs,and lack of operating capital.There were also significant differences in the affecting mechanisms between the two nations,including transportation difficulties from widespread road closures and significant reduction in holiday sales of dairy products in China,and the shutdown of many dairy processors in the United States due to the closing of schools,restaurants,and hotels.While government financial reliefs are highly needed to help many dairy farms and processors survive this pandemic in the short term,the dairy industries and governments need to work together to develop long-term strategies and policies to balance the industries’efficiency and flexibility,product specialization and diversification,supply chain integration and local food systems,and market mechanisms and policy regulations and interventions.展开更多
China began to build its national shale gas demonstration area in 2012.The central exploration,drilling,and development technologies for medium and shallow marine shale reservoirs with less than 3,500m of buried depth...China began to build its national shale gas demonstration area in 2012.The central exploration,drilling,and development technologies for medium and shallow marine shale reservoirs with less than 3,500m of buried depth in Changning-Weiyuan,Zhaotong,and other regions had matured.In this study,we macroscopically investigated the development history of shale gas in the United States and China and compared the physical and mechanical conditions of deep and shallow reservoirs.The comparative results revealed that themain reasons for the order-ofmagnitude difference between China’s annual shale gas output and the United States could be attributed to three aspects:reservoir buried depth,reservoir physical and mechanical properties,and engineering technology level.The current engineering technology level of China could not meet the requirements of increasing production and reducing costs for deep shale gas reservoirs;they had reached the beneficial threshold development stage and lacked the capacity for large-scale commercial production.We identified several physical and mechanical reasons for this threshold development stage.Deep shale reservoirs were affected by the bedding fracture,low brittleness index,low clay mineral content,and significant areal differences,as well as by the transformation from elasticity to plasticity,difficulty in sanding,and high mechanical and strength parameters.Simultaneously,they were accompanied by six high values of formation temperature,horizontal principal stress difference,pore pressure,fracture pressure,extension pressure,and closure pressure.The key to deep shale gas horizontal well fracturing was to improve the complexity of the hydraulic fracture network,formadequate proppant support of fracture surface,and increase the practical stimulated reservoir volume(SRV),which accompanied visual hydraulic discrete network monitoring.On this basis,we proposed several ideas to improve China’s deep shale gas development involving advanced technology systems,developing tools,and supporting technologies in shale gas exploration and development in the United States.These ideas primarily involved stimulation technologies,such as vertically integrated dessert identification and optimization,horizontal well multistage/multicluster fracturing,staged tools development for horizontal wells,fractures network morphology monitoring by microseismic and distributed optical fiber,shale hydration expansion,soak well,and fracturing fluid flow back.China initially developed the critical technology of horizontal well large-scale and high-strength volume fracturing with a core of“staged fracturing with dense cutting+shorter cluster spacing+fracture reorientation by pitching+forced-sand addition+increasing diameter perforating+proppant combination by high strength and small particle size particles”.We concluded that China should continue to conduct critical research on theories and technical methods of horizontal well fracturing,suitable for domestic deep and ultra-deep marine and marine-continental sedimentary shale,to support and promote the efficient development of shale gas in China in the future.It is essential to balance the relationship between the overall utilization degree of the gas reservoir and associated economic benefits and to localize some essential tools and supporting technologies.These findings can contribute to the flourishing developments of China’s deep shale gas.展开更多
Factors affecting the U.S. refractories industry, such as decreasing demand, mergers , and decreased education are discussed, along with manufacturing statistics (i. e. , annual value and product trends ) , indicating...Factors affecting the U.S. refractories industry, such as decreasing demand, mergers , and decreased education are discussed, along with manufacturing statistics (i. e. , annual value and product trends ) , indicating that the U.S. market has declined for five straight years. Research activities have changed, with more emphasis on practical, applied projects , which have continued to produce important advances. Many challenges and opportunities remain, based on the current and future business requirements .展开更多
To date,the United States(U.S.)has been the most heavily impacted country by the coronavirus disease 2019(COVID-19).By November 30,2020,when this paper was written,13.5 million cases were reported in the U.S.with over...To date,the United States(U.S.)has been the most heavily impacted country by the coronavirus disease 2019(COVID-19).By November 30,2020,when this paper was written,13.5 million cases were reported in the U.S.with over 268000 deaths.Historically,vaccines have been one of the most effective and efficient technical tools for controlling a communicable disease.While the development of these vaccines has certainly been a challenge,it could be more challenging to achieve robust vaccine uptake because of many barriers.In this review,we focused on two types of barriers documented from long-term experience in the U.S.:structural and attitudinal.Structural barriers are systemic issues that impact one's ability to access a service,and they include time,transportation,cost,and clinic or outlet location;while attitudinal barriers are beliefs or perceptions that impact the willingness of at-risk individuals to seek out and/or accept a service.In the context of vaccination they include beliefs about the communicable disease,beliefs about vaccines,fear,and trust in healthcare and governmental agencies.Of the attitudinal barriers,public trust is a barrier that is of particular importance.In addition to affecting reception of vaccines,it may exacerbate disparities and reduce the likelihood of success of a vaccination program.Recommendations are made to overcome attitudinal barriers to help improve the effectiveness of vaccination programs for COVID-19 control in the U.S.,such as building public support through bipartisan endorsements and leveraging social media platforms to promote vaccination.展开更多
This study discusses the basic guarantee of the Charter of the United Nations to realize the right to development from the angle of Transforming Our World: the 2030 Agenda for Sustainable Development. The concepts reg...This study discusses the basic guarantee of the Charter of the United Nations to realize the right to development from the angle of Transforming Our World: the 2030 Agenda for Sustainable Development. The concepts regarding the people as the focal point, the dignity, the worth of the human being, as well as larger aspects of freedom, and other basic concepts within the Charter of the United Nations, guide the right direction of action for the realization of the right to development. The purpose and principles of the United Nations establishment in the Charter constitute the basic legal protection of the right to development. Values of peace, international dialogue, and international cooperation show the right path to the realization of the right to development.展开更多
Editor's note: Following is the full text of the Human Rights Record of the United States in 2004, released by the Information office of China's State Council on March 3, 2005.
Following is the full text of the Human Rights Record of the United States in 2003, released by the Information Office of the State Council of the People's Republic of China on March 1, 2004.
On April 3, 2003, the Information Office of the State Council of the People's Republic of China released a report entitled Human Rights Record of the United States in 2002.Following is the full text of the document:
Mining industry has significantly contributed to the prosperity of the nation with economic growth, whereas mining operation has caused Acid Mine Drainage (AMD) with the abandonment of mines. As some researchers sugge...Mining industry has significantly contributed to the prosperity of the nation with economic growth, whereas mining operation has caused Acid Mine Drainage (AMD) with the abandonment of mines. As some researchers suggest, the history of AMD is, generally, affected by the change in not only mining industry but also in social and economic conditions. Thus, historical analysis is an effective way to find the key factors of AMD. In this study, in order to find the key factors of AMD, we examine the history of the United States (U.S.) and South Africa, where their economy had been developed owing to the large-scale mining, based on the findings in the previous studies. The results indicated that the abandoned mines due to the economic depression triggered AMD in the U.S. and South Africa. While the U.S. had progressively adopted anti-AMD methods in terms of prevention, prediction, and remediation (PPR) as a comprehensive approach, especially since the 1970s onwards because of the rise of environmental consciousness as well as strict regulations, South Africa is at the early stage of implementing the regulations following PPR. The public attention should be directed to environmental conservation in addition to the implementation of the regulations in South Africa. The improvement in socio-economic conditions is, additionally, necessary for the rise of environmental consciousness in South Africa in the light of the three pillars of sustainable development: social, economic, and environmental elements.展开更多
On March 9,2006,the Information Office of the State Council of the People's Republic of China released an article entitled the Human Rights Record of the United States in 2005.The following is the full text.
The State Department of the United States released its Country Reports on Human Rights Practices for 2008 on February 25, 2009. As in previous years, the reports are full of accusations of the human rights situation i...The State Department of the United States released its Country Reports on Human Rights Practices for 2008 on February 25, 2009. As in previous years, the reports are full of accusations of the human rights situation in more than 190 countries and regions including China, but mentioned nothing of the widespread human rights abuses on its own territory. The Human Rights Record of the United States in 2008 is prepared to help people around the world understand the real situation of human rights in the United States, and as a reminder for the United States to reflect upon its own issues.展开更多
文摘Research Problem: In Abu Dhabi, limited implementation of OSH Regulations contributes to the general unawareness among employees and workers about occupational hazards and safety measures, resulting in slow responsiveness toward enforcement measures and a lack of self-regulatory approaches within companies. Purpose: The purpose of this study is to examine the implementation methods practised in Abu Dhabi with those in developed countries with established OSH regulatory bodies. Methodology: Qualitative and quantitative research methods were employed to gather primary research data. Workers from various industries in Abu Dhabi were sampled on purpose and asked to respond to questionnaires and interviews on OSH protocol awareness and implementation, and circumstances of workplace incidence. Results: The findings of this study showed that the enforcement of OSH requirements in UAE positively correlated to a reduction in the rate of work-related injury and improved business performance. The quantitative research data showed that the energy sector had the highest score (15) while the tourism sector had the lowest score (5.3) in occupational health systems and improvements in business efficiency and productivity. Implications: The outcomes of this study shed light on the importance of implementing OSH Guidelines for companies to empower their safety managers to fully enforce OSH requirements in their organisations. In conclusion, effective OSH enforcement requires cooperation between general workers and OSH managers and facilitation from business owners.
基金This study was supported the National Social Science Foundation Major Research Project(Grant no.20VHQ011)Chinese Arctic and Antarctic Administration program“New Developments in the Arctic Strategy of Major Countries”in 2022.
文摘On 7 October,2022,the Biden administration released an updated version of the National Strategy for the Arctic Region based on new developments in the Arctic region and global affairs.This strategy emphasizes traditional security issues in the Arctic,attaches great importance to climate governance in the region,and advocates for restoring American leadership through international cooperation.In view of the strong influence of the United States(U.S.)in the Arctic region,the changes of the U.S.Arctic strategy will inevitably have an impact on China’s scientific researchrights,economic interests,and governance rights in the Arctic region.To respond to the new situation brought about by the changes in the U.S.Arctic strategy,China should take the initiative to maintain positive relationships with all Arctic countries,and continue its active participation in Arctic affairs.
基金supported by the Special Fund of Scientific Research Base for Drug Regulation of NMPA-Research Institute of Drug Regulatory Science of Shenyang Pharmaceutical University(2021jgkx004).
文摘Objective To study the strategic planning of drug regulatory science,the effectiveness and role of policy implementation in the United States so as to gain insights and make suggestions for further improving the strategic planning of drug regulatory science in China.Methods Literature research method and comparative research method were used to compare and analyze the strategic planning of regulatory science in China and the United States.Results and Conclusion Drawing on the US experience,China should set goals based on mission and vision and identify problems,knowledge gaps,and key areas,then concrete measures can be taken to advance regulatory science.
文摘With the research on and development of Genetically Modified Food (GMF), people's attitude toward GMF may fall into two divergent categories, typical- ly represented by the United States(US) and the European Union(EU), respectively. The former follows a "sound science principle" and firmly objects to the precautionary principle, namely a permissive policy of positive support of and voluntary labelling on GMF; while the latter adopts a cautiously precautionary principle, requiring mandatory labelling and traceability. From the standpoint of regulatory principles, together with corresponding supervisory measures and relevant provisions, this paper compared the execution of directives and provisions on GMF from the initial policies enacted by the US and EU to current situation combined with the track and analysis of latest polic ies issued.
文摘Since the 21 st century, both Chinese Mainland and the United States have formulated foreign language education policiesbased on their national needs. This paper makes a comparative study of the value orientations of foreign language education poli-cies in Chinese Mainland and the United States in the 21 st century and finds that both China and the United States have regardedtheir national interests as the essential value orientation of their foreign language education policies. To be specific,the core valueorientation of foreign language education policies in China is to enhance its cultural soft power.In contrast,the core value orienta-tion of foreign language education policies in the United States is to safeguard its national security. Through the comparison of thedifferent value orientations of foreign language education policies of the two countries, the paper provides some reference for the for-eign language education policy-making in Chinese Mainland.
基金This work was supported by Health Professional Education Foundation of Thailand and China Medical Board(12-121)
文摘Having the two largest nursing workforces across the globe,both China and the United States have implemented licensure examinations to standardize the qualifications of registered nurse.China established the National Nursing Licensure Examination(NNLE)in 1995.Like the National Council Licensure Examination for Registered Nurses(NCLEX-RN)in the United States,the NNLE has become an important link in the nurse registration process and contributed a lot in quality assurance and development of nursing profession.It may be necessary for the NNLE to learn from NCLEX-RN in several aspects,including increasing the frequency of exam,providing examinees with individualized services,and continuing reforming exam content and format.By better aligning the content and format of the examination with the current nursing paradigm and clinical requirements,nurses may enter the healthcare field better prepared to care for patients.Considering the magnitude of their nursing workforce,both China and the United States have great potential to serve as a role model for other developing countries as they look towards establishing national nursing education programs.As new policies around standardized nurse education in China take form,we urge that the NNLE be included alongside curricular reforms.As these reforms are implemented,continued research will be needed to evaluate the effectiveness of curriculum and licensure exam regulations upon nurse preparedness and quality of nursing care in China.
文摘As the world’s top two economies,the United States(U.S.)and China face a number of similar water resources problems.Yet,few studies have been done to systematically compare policies and approaches on water resources management between China and the U.S.This study compares water resources policies of China and the U.S.in the areas of national authority,water supply,water quality,and ecosystem use of the water to draw lessons learned and shed light on water resources management in China,the U.S.,and the rest of the world.The lessons learned from the comparison include six aspects.1)New paradigms of people-water harmony and a water-saving society are urgently needed to address the pressing water crisis and achieve the United Nations Sustainable Development Goals(UN SDGs).2)A comprehensive,consistent,forward-looking national policy is necessary to achieve sustainable use of water resources.3)Empowerment of river basin commissions with comprehensive authority over the integrative management of air,land,water,and biological resources in the river basin could significantly enhance the benefits and effectiveness of economic development and environmental protection.4)Expansion of water exchange through market mechanisms among water users promotes efficient and beneficial water uses.5)Use of water for ecosystem services should be an integral part of water resources management.China has set up a national blueprint for achieving ecological civilization;maintaining appropriate amounts of flow in rivers and lakes for maintenance of wildlife and fisheries and ecosystems should be institutionalized as part of this national strategy as well.6)By sharing their rich experiences and lessons in water resources management,economic development,and ecological protection with other countries,China and the U.S.can help the world to achieve global human-water harmony and the UN SDGs.
基金The authors would like to thank the Vermont Agricultural Experiment Station at the University of Vermont,USA,and earmarked fund for China Agriculture Research System(CARS-36)for financial support of this study.
文摘The purposes of this study are to assess the COVID-19 pandemic’s impacts on the dairy industries in China and the United States and to derive policy recommendations for enhancing the diary industries’resilience to pandemics and other market shocks.Specifically,data from the two nations are used to analyze and compare the mechanisms through which the pandemic has affected their dairy industries and to discuss potential lessons from their experiences.The findings suggest that this pandemic has heavily affected the dairy industries in both China and the United States through similar mechanisms,such as decreased farmgate milk prices,disruption and difficulties of moving milk within the supply chains,worker shortages,increased production costs,and lack of operating capital.There were also significant differences in the affecting mechanisms between the two nations,including transportation difficulties from widespread road closures and significant reduction in holiday sales of dairy products in China,and the shutdown of many dairy processors in the United States due to the closing of schools,restaurants,and hotels.While government financial reliefs are highly needed to help many dairy farms and processors survive this pandemic in the short term,the dairy industries and governments need to work together to develop long-term strategies and policies to balance the industries’efficiency and flexibility,product specialization and diversification,supply chain integration and local food systems,and market mechanisms and policy regulations and interventions.
基金funded by the National Key Research and Development Program of China under Grant No.2020YFC1808102the National Natural Science Foundation of China(Grant Nos.51874328,U1762215)the Strategic Cooperation Technology Projects of CNPC and CUPB(Grant No.ZLZX2020-02).
文摘China began to build its national shale gas demonstration area in 2012.The central exploration,drilling,and development technologies for medium and shallow marine shale reservoirs with less than 3,500m of buried depth in Changning-Weiyuan,Zhaotong,and other regions had matured.In this study,we macroscopically investigated the development history of shale gas in the United States and China and compared the physical and mechanical conditions of deep and shallow reservoirs.The comparative results revealed that themain reasons for the order-ofmagnitude difference between China’s annual shale gas output and the United States could be attributed to three aspects:reservoir buried depth,reservoir physical and mechanical properties,and engineering technology level.The current engineering technology level of China could not meet the requirements of increasing production and reducing costs for deep shale gas reservoirs;they had reached the beneficial threshold development stage and lacked the capacity for large-scale commercial production.We identified several physical and mechanical reasons for this threshold development stage.Deep shale reservoirs were affected by the bedding fracture,low brittleness index,low clay mineral content,and significant areal differences,as well as by the transformation from elasticity to plasticity,difficulty in sanding,and high mechanical and strength parameters.Simultaneously,they were accompanied by six high values of formation temperature,horizontal principal stress difference,pore pressure,fracture pressure,extension pressure,and closure pressure.The key to deep shale gas horizontal well fracturing was to improve the complexity of the hydraulic fracture network,formadequate proppant support of fracture surface,and increase the practical stimulated reservoir volume(SRV),which accompanied visual hydraulic discrete network monitoring.On this basis,we proposed several ideas to improve China’s deep shale gas development involving advanced technology systems,developing tools,and supporting technologies in shale gas exploration and development in the United States.These ideas primarily involved stimulation technologies,such as vertically integrated dessert identification and optimization,horizontal well multistage/multicluster fracturing,staged tools development for horizontal wells,fractures network morphology monitoring by microseismic and distributed optical fiber,shale hydration expansion,soak well,and fracturing fluid flow back.China initially developed the critical technology of horizontal well large-scale and high-strength volume fracturing with a core of“staged fracturing with dense cutting+shorter cluster spacing+fracture reorientation by pitching+forced-sand addition+increasing diameter perforating+proppant combination by high strength and small particle size particles”.We concluded that China should continue to conduct critical research on theories and technical methods of horizontal well fracturing,suitable for domestic deep and ultra-deep marine and marine-continental sedimentary shale,to support and promote the efficient development of shale gas in China in the future.It is essential to balance the relationship between the overall utilization degree of the gas reservoir and associated economic benefits and to localize some essential tools and supporting technologies.These findings can contribute to the flourishing developments of China’s deep shale gas.
文摘Factors affecting the U.S. refractories industry, such as decreasing demand, mergers , and decreased education are discussed, along with manufacturing statistics (i. e. , annual value and product trends ) , indicating that the U.S. market has declined for five straight years. Research activities have changed, with more emphasis on practical, applied projects , which have continued to produce important advances. Many challenges and opportunities remain, based on the current and future business requirements .
基金This article was supported by U.S.National Institute on Alcohol Abuse and Alcoholism Grant T32AA025877.
文摘To date,the United States(U.S.)has been the most heavily impacted country by the coronavirus disease 2019(COVID-19).By November 30,2020,when this paper was written,13.5 million cases were reported in the U.S.with over 268000 deaths.Historically,vaccines have been one of the most effective and efficient technical tools for controlling a communicable disease.While the development of these vaccines has certainly been a challenge,it could be more challenging to achieve robust vaccine uptake because of many barriers.In this review,we focused on two types of barriers documented from long-term experience in the U.S.:structural and attitudinal.Structural barriers are systemic issues that impact one's ability to access a service,and they include time,transportation,cost,and clinic or outlet location;while attitudinal barriers are beliefs or perceptions that impact the willingness of at-risk individuals to seek out and/or accept a service.In the context of vaccination they include beliefs about the communicable disease,beliefs about vaccines,fear,and trust in healthcare and governmental agencies.Of the attitudinal barriers,public trust is a barrier that is of particular importance.In addition to affecting reception of vaccines,it may exacerbate disparities and reduce the likelihood of success of a vaccination program.Recommendations are made to overcome attitudinal barriers to help improve the effectiveness of vaccination programs for COVID-19 control in the U.S.,such as building public support through bipartisan endorsements and leveraging social media platforms to promote vaccination.
文摘This study discusses the basic guarantee of the Charter of the United Nations to realize the right to development from the angle of Transforming Our World: the 2030 Agenda for Sustainable Development. The concepts regarding the people as the focal point, the dignity, the worth of the human being, as well as larger aspects of freedom, and other basic concepts within the Charter of the United Nations, guide the right direction of action for the realization of the right to development. The purpose and principles of the United Nations establishment in the Charter constitute the basic legal protection of the right to development. Values of peace, international dialogue, and international cooperation show the right path to the realization of the right to development.
文摘Editor's note: Following is the full text of the Human Rights Record of the United States in 2004, released by the Information office of China's State Council on March 3, 2005.
文摘Following is the full text of the Human Rights Record of the United States in 2003, released by the Information Office of the State Council of the People's Republic of China on March 1, 2004.
文摘On April 3, 2003, the Information Office of the State Council of the People's Republic of China released a report entitled Human Rights Record of the United States in 2002.Following is the full text of the document:
文摘Mining industry has significantly contributed to the prosperity of the nation with economic growth, whereas mining operation has caused Acid Mine Drainage (AMD) with the abandonment of mines. As some researchers suggest, the history of AMD is, generally, affected by the change in not only mining industry but also in social and economic conditions. Thus, historical analysis is an effective way to find the key factors of AMD. In this study, in order to find the key factors of AMD, we examine the history of the United States (U.S.) and South Africa, where their economy had been developed owing to the large-scale mining, based on the findings in the previous studies. The results indicated that the abandoned mines due to the economic depression triggered AMD in the U.S. and South Africa. While the U.S. had progressively adopted anti-AMD methods in terms of prevention, prediction, and remediation (PPR) as a comprehensive approach, especially since the 1970s onwards because of the rise of environmental consciousness as well as strict regulations, South Africa is at the early stage of implementing the regulations following PPR. The public attention should be directed to environmental conservation in addition to the implementation of the regulations in South Africa. The improvement in socio-economic conditions is, additionally, necessary for the rise of environmental consciousness in South Africa in the light of the three pillars of sustainable development: social, economic, and environmental elements.
文摘On March 9,2006,the Information Office of the State Council of the People's Republic of China released an article entitled the Human Rights Record of the United States in 2005.The following is the full text.
文摘The State Department of the United States released its Country Reports on Human Rights Practices for 2008 on February 25, 2009. As in previous years, the reports are full of accusations of the human rights situation in more than 190 countries and regions including China, but mentioned nothing of the widespread human rights abuses on its own territory. The Human Rights Record of the United States in 2008 is prepared to help people around the world understand the real situation of human rights in the United States, and as a reminder for the United States to reflect upon its own issues.