Performance Prediction of the Ferrous Metal Smelting and Rolling Processing Industry in Supply-Side Structural Reform in China

Supply-side structural reforms and environmental protection policies have a great impact on the ferrous metal smelting and rolling processing industry. This paper uses a grey model that introduces a fractional-order cumulative generating operator to study the development of ferrous metal smelting and rolling processing enterprises under the influence of supply-side structural reform in order to derive the future development trend of the industry. The forecast results show that from 2018 to 2022, the number of enterprises and substitute enterprises, inventory, finished products, and assets and liabilities decreases; the scale of income of metal smelting and rolling processing industry increases. The results can serve as a reference for policy makers and industry investors.

The ecological mechanisms of Acetes blooms as a threat to the security of cooling systems in coastal nuclear power plants

Recently, there have been an increasing number of reports on the shutdown of coastal nuclear power plants because of outbreaks of marine organisms, such as jellyfish and fish. These organisms clog the pipes during an outbreak or when they accumulate near nuclear power plants in coastal regions. The safety of nuclear power plants is threatened by Acetes blooms. Thus, based on the physiology and ecology of Acetes, including the biology, auxology, feeding ecology, population dynamics, environmental suitability and effects of nuclear power plant thermal effluents, three hypotheses were proposed by previous studies to explain the ecological mechanisms of an Acetes bloom: (1) the wintering ground hypothesis, (2) the population dynamics hypothesis and (3) the ecosystem dynamics hypothesis. The main content and prevention measures used in previous studies were introduced and reviewed. Ecological protection combined with relevant environmental protection policies and laws in coastal areas are the long-term goals for the management of Acetes blooms.

CHALLENGES INVOLVED IN INTRODUCING ENVIRONMENTAL MANAGEMENT SYSTEMS IN AGRICULTURE

The introduction of internationally recognized environmental management standards is primarily aimed at making the world economy more environmentally friendly, and at more effective conservation of natural resources. The European Union has specific objectives related to the implementation of environmental protection policies by 2050. Effective pathways and approaches to the implementation of such policies and objectives in agriculture can be found through the introduction of a system according to the requirements of ISO 45001. The main objective of this study is to identify, based on an expert assessment, the milestones in introducing and successful certification of environmental management systems in agriculture. The established milestones for system development may be extended to other sectors.

Part VII Inter-linkages with Other Regimes, Ch.44 Investment

This chapter discusses the relationship between international investment law and international environmental law. The contestation between the fields that emerged in the context of investor-state arbitration was blunt and initially resulted in the rules of international investment law being prioritized over the obligations of states under multilateral environmental agreements (MEAs), domestic environmental protection policies and decision-making, and the host state's public welfare regulatory space. Responding to that contest, the new generation bilateral investment treaties (BITs) and free trade agreements (FTAs) reflect the desire of states to work within a more balanced version of the environment/investment nexus. It is not yet, however, at a point where it can be said to be equally balanced in the engagement of international environmental law and international investment law, and there is evidently still room for significant improvements in the way in which environmental issues are understood and interpreted by arbitrators in investor-state disputes. But the culture and context in which the environment and investment are meeting is most definitely shifting and it is hoped that the trajectory continues still further in that direction.

Urban Air Pollution and Mental Stress: A Nationwide Study of University Students in China

Background: Studies exploring the relationship between air pollution levels and mental stress have rarely been done, and no studies have been done comparing university student mental stress levels based on regional air pollution levels.Objectives: The objective of this study was to evaluate the association between air pollution and mental stress among university students.Methods: Participants were 11,942 students, who were identified through a multistage survey sampling process conducted in 50 universities. Regional air pollution levels were retrieved from a national database, and mental stress was measured using a perceived stress scale. Both unadjusted and adjusted methods were utilized in the data analyses.Results: Mental stress prevalence was 36.9% (95% Confidence Interval: 24.4–49.5%). The final model indicated that regional air pollution levels were positively associated with students' mental stress.Conclusions: This study provided new and direct evidence of the health hazards of air pollution. The findings underscore the need to develop and implement stringent environmental protection policies, while simultaneously raising public awareness of environmental protection.

The effect of urban air pollution on mental stress: A nationwide study of university students in China (Preprint)

BACKGROUND Studies exploring the relationship between air pollution levels and mental stress have rarely been done, and no studies have been done comparing university student mental stress levels based on regional air pollution levels. OBJECTIVE The objective of this study was to evaluate the association between air pollution and mental stress among university students. METHODS Participants were 11,942 students, who were identified through a multistage survey sampling process conducted in 50 universities. Regional air pollution levels were retrieved from a national database, and mental stress was measured using a perceived stress scale. Both unadjusted and adjusted methods were utilized in the data analyses. RESULTS Mental stress prevalence was 36.9% (95% CI: 24.4%–49.5%). The final model indicated that regional air pollution levels were positively associated with students’ mental stress. CONCLUSIONS This study provided new and direct evidence of the health hazards of air pollution. The findings underscore the need to develop and implement stringent environmental protection policies, while simultaneously raising public awareness of environmental protection. CLINICALTRIAL NONE

The effect of urban air pollution on mental stress: A nationwide study of university students in China (Preprint)

BACKGROUND Studies exploring the relationship between air pollution levels and mental stress have rarely been done, and no studies have been done comparing university student mental stress levels based on regional air pollution levels. OBJECTIVE The objective of this study was to evaluate the association between air pollution and mental stress among university students. METHODS Participants were 11,942 students, who were identified through a multistage survey sampling process conducted in 50 universities. Regional air pollution levels were retrieved from a national database, and mental stress was measured using a perceived stress scale. Both unadjusted and adjusted methods were utilized in the data analyses. RESULTS Mental stress prevalence was 36.9% (95% CI: 24.4%–49.5%). The final model indicated that regional air pollution levels were positively associated with students’ mental stress. CONCLUSIONS This study provided new and direct evidence of the health hazards of air pollution. The findings underscore the need to develop and implement stringent environmental protection policies, while simultaneously raising public awareness of environmental protection. CLINICALTRIAL NONE

DINÂMICA ESPACIAL DE USO E OCUPAÇÃO DO SOLO URBANO NO MUNICÍPIO DE BREU BRANCO-PA

Breu Branco é um município do estado do Pará, localizado na microrregião do lago de Tucuruí. Ao longo dos anos o município experimentou um crescimento populacional acelerado, consequência da migração de pessoas oriundas de outras regiões em busca de trabalho e moradia próximos às obras de barragem. O crescimento espacial tem forte relação com a Hidroelétrica. Além do fator populacional, outros três fatores foram importantes para o crescimento espacial de Breu Branco: o preço da terra, a topografia da área de expansão e a falta de políticas de proteção ambiental no município. Nesse trabalho utilizamos ferramentas cartográficas e sensoriamento remoto para a construção de mapas em três períodos 1996, 2006 e 2016. Os resultados obtidos mostram novas dinâmicas espaciais, como a duplicação da área urbana, saturação do núcleo projetado da cidade em direção ao norte, conversão de áreas de floresta e preservação (APP) em ocupações, concentração imobiliária e especulação sobre novas áreas, do ponto de vista populacional um aumento de 58% da população em vinte anos.Palavras-chave: Hidroelétrica. Território, Dinâmicas de uso e ocupação do solo. Cartografia. Plano diretor.SPATIAL DYNAMICS OF USE AND OCCUPATION OF URBAN SOIL IN THE MUNICIPALITY OF BREU BRANCO-PAAbstract: Breu Branco is a municipality in the state of Pará, located in the microregion of Lake Tucuruí. Over the years, the municipality experienced an accelerated population growth, a consequence of the migration of people from other municipalities of Pará and the northeast region of Brazil in search of work and housing near the works. The spatial growth has a strong relationship with the implementation phases of the Tucuruí HPP. In addition to the population factor, three other factors were important for the Breu Branco spatial growth: the price of land, the topography of the expansion area and the lack of environmental protection policies the municipality. In this work, we used cartographic tools and remote sensing for the construction of maps in three periods 1996, 2006 and 2016. The results obtained show new spatial dynamics, such as the duplication of the urban area, saturation of the projected nucleus of the city towards the north, conversion of forest and preservation areas (APP) into occupations, real estate concentration and speculation about new areas, from the point of view. population view an increase of 58% of the population in twenty years. Keywords: Hydroelectric.Territory. Dynamics of use and Soil occupation. Cartography. Master Plan.

Environmental protection policies at craft villages in Hanoi in the context of sustainable development

Craft village is one of the distinct features of rural areas and an important factor in industrial and secondary manufacturing zones and subzones in Vietnam. Craft village, in nature, is a guild within a village who earn their living through non-agricultural activities. Craft village has been long preserved and developed with various characteristics including production subject (artisan); produce (featured by sophistication and arts); natural condition and specific technological process. In the context of industrialization and modernization being interwined with sustainable development, this article provides an insight into environmental protection policies applied to craft villages in Hanoi in order to understand the situation of executing environmental protection policies for craft villages in Hanoi; to point out challenges in formulating and implementing the policies; to therefore propose measures to develop the policies and enhance the implementation effectiveness.

Assessing Green Policies for the Rehabilitation and Sustainable Restoration of Mine Sites in Cameroon: Case of the Mayo-Darlé Mine Site, Adamawa Region

Mining is not without negative consequences for the environment. It is appropriate for each concerned state, particularly Cameroon, to adopt and implement mining laws and regulations to reduce environmental risks. The former Mayo-Darlé mine site in the Adamawa region that has been abandoned for several decades is a striking example of the limitations and lapses of national environmental protection policies. Hence, this study outlines an inventory of features in the concerned mine site while analyzing green policies related to the mining sector in Cameroon. The study attempts to modelize the socio-economic and environmental impacts in the sustainable management of the Mayo-Darlé mine site. The study proposes the prescription of a green network to encourage artisanal sustainable practices within mining fields. This “eco-sustainable" strategy shall be specific to mine site development. The implementation of measures outlined in the proposed policy shall considerably improve environmental conditions around the mine site. This involves the establishment of a rehabilitation plan and realistic restoration of the Mayo Darlé site for good preservation of the environment.