Mussel aquaculture and large yellow croaker aquaculture areas and their environmental characteristics in Zhoushan were analyzed using satellite data and in-situ surveys.A new two-step remote sensing method was propose...Mussel aquaculture and large yellow croaker aquaculture areas and their environmental characteristics in Zhoushan were analyzed using satellite data and in-situ surveys.A new two-step remote sensing method was proposed and applied to determine the basic environmental characteristics of the best mussel and large yellow croaker aquaculture areas.This methodology includes the first step of extraction of the location distribution and the second step of the extraction of internal environmental factors.The fishery ranching index(FRI1,FRI2)was established to extract the mussel and the large yellow croaker aquaculture area in Zhoushan,using Gaofen-1(GF-1)and Gaofen-6(GF-6)satellite data with a special resolution of 2 m.In the second step,the environmental factors such as sea surface temperature(SST),chlorophyll a(Chl-a)concentration,current and tide,suspended sediment concentration(SSC)in mussel aquaculture area and large yellow croaker aquaculture area were extracted and analyzed in detail.The results show the following three points.(1)For the extraction of the mussel aquaculture area,FRI1 and FRI2 are complementary,and the combination of FRI1 and FRI2 is suitable to extract the mussel aquaculture area.As for the large yellow croaker aquaculture area extraction,FRI2 is suitable.(2)Mussel aquaculture and the large yellow croaker aquaculture area in Zhoushan are mainly located on the side near the islands that are away from the eastern open waters.The water environment factor template suitable for mussel and large yellow croaker aquaculture was determined.(3)This two-step remote sensing method can be used for the preliminary screening of potential site selection for the mussels and large yellow croaker aquaculture area in the future.the fishery ranching index(FRI1,FRI2)in this paper can be applied to extract the mussel and large yellow croaker aquaculture areas in coastal waters around the world.展开更多
Field-effect transistors(FETs)present highly sensitive,rapid,and in situ detection capability in chemical and biological analysis.Recently,two-dimensional(2D)transition-metal dichalcogenides(TMDCs)attract significant ...Field-effect transistors(FETs)present highly sensitive,rapid,and in situ detection capability in chemical and biological analysis.Recently,two-dimensional(2D)transition-metal dichalcogenides(TMDCs)attract significant attention as FET channel due to their unique structures and outstanding properties.With the booming of studies on TMDC FETs,we aim to give a timely review on TMDCbased FET sensors for environmental analysis in different media.First,theoretical basics on TMDC and FET sensor are introduced.Then,recent advances of TMDC FET sensor for pollutant detection in gaseous and aqueous media are,respectively,discussed.At last,future perspectives and challenges in practical application and commercialization are given for TMDC FET sensors.This article provides an overview on TMDC sensors for a wide variety of analytes with an emphasize on the increasing demand of advanced sensing technologies in environmental analysis.展开更多
This paper introduced the history,equipment and mechanism of the microwave digestion method. This paper studied the optimization parameter of digestion conditions, such as acid and acid combination, digestion time and...This paper introduced the history,equipment and mechanism of the microwave digestion method. This paper studied the optimization parameter of digestion conditions, such as acid and acid combination, digestion time and applied microwave power,particle size,and other factors.The analytical performance in environmental research and the modification of the microwave digestion method were also discussed.展开更多
For purpose of purification and enrichment, environmental samples usually need to be pretreated before analysis because of low concentration of residual organic matters. Solid-phase extraction （SPE） is one of the fr...For purpose of purification and enrichment, environmental samples usually need to be pretreated before analysis because of low concentration of residual organic matters. Solid-phase extraction （SPE） is one of the frequently used methods of pretreatment. This article introduces the methodological principle and flow channel of SPE as well as the categories of frequently used small extraction column, analyzes the application of online SPE technology in environmental analysis, generalizes the advantages of online SPE and sets forth its developmental trend.展开更多
The scope for environmental analysis constitutes a critical factor in recent times, yet demanding importance due to the concerns of environmental sustainability. The study aims at analysing the prospects of implementi...The scope for environmental analysis constitutes a critical factor in recent times, yet demanding importance due to the concerns of environmental sustainability. The study aims at analysing the prospects of implementing an integrated GIS and spatial configuration for environment analysis in Israel. The study adopts an empirical study design to consider the multi-dimensional utilisation of an integrated GIS and spatial configuration for environment analysis. The study considers the materials and methods of the GIS system modelling as well, consisting of satellite imagery, GPS-based location identification, Esri ArcGIS, CyberGIS, and BIM integration to present a comprehensive system for the environmental analysis of Israel. The results of the study indicate that the threats of natural disasters and climate change can be identified based on the synergy of spatial data within an integrated GIS modelling. In many cases, it is also used in collaboration with a BIM to ensure that planning and decision-making processes are sustainable, economically beneficial and environmentally considered. Thus, it is concluded that environmental analysis through the projection of visually represented satellite imagery within an integrated GIS with spatial configurations in Israel can minimise the conflicts between the infrastructural designs, human activities, and environmental sustainability.展开更多
In order to give out the correct conclusion for evaluating Chinese eco-environmental situation, in this paper, a special assessmental procedure has been used to analyse following 7 basic environmental problems: (1) Na...In order to give out the correct conclusion for evaluating Chinese eco-environmental situation, in this paper, a special assessmental procedure has been used to analyse following 7 basic environmental problems: (1) Natural hazards; (2) Soil erosion; (3) Forest shrinkage and grassland degradation; (4) Water resources shortage; (5) Desertification; (6) Environmental pollution; (7) Farmland decrease. The basic strategies for improving Chinese environmental situation have been suggested.展开更多
Surface-enhanced Raman scattering(SERS)is among the most widely applied analytical techniques due to its easy execution and extreme sensitivity.Target molecules can be detected and distinguished based upon the fingerp...Surface-enhanced Raman scattering(SERS)is among the most widely applied analytical techniques due to its easy execution and extreme sensitivity.Target molecules can be detected and distinguished based upon the fingerprint spectra that arise when absorbed on the SERS substrates surface,particularly on the SERS-active hotspots.Thus,rational fabricating the enhancing substrates plays a key role in broadening SERS application.Programmable DNA functionalized plasmonic nanoassemblies,where DNA acts as both structure basis and functional unit,combine the specificity of DNA recognition,and modulate the assembly of plasmonic nanoparticles(NPs).Specifically designed DNA not only improves the selectivity to target molecules but also promotes the sensitivity of the optical signals through precisely regulating the distance between the molecule and the substrate.A variety of DNA-functionalized SERS sensors have been reported and obtained well performance in the analysis of heavy metal ions in water,toxins,pesticide residues,antibiotics,hormones,illicit drugs,or other small molecules.This review places an emphasis on the design and sensing strategies of the DNA-functionalized plasmonic nanoassemblies,as well as basic principles of Raman enhancement,and recent advances for environmental analysis.The current challenges and potential trends in the development of DNAfunctionalized SERS sensors for environmental pollutant monitoring in complicated scenarios are subsequently discussed.展开更多
The core objective of this study is to conduct precise and real-time monitoring of the industrial area Dammam located in the Kingdom of Saudi Arabia (KSA) which consists of a number of various chemicals, minerals and ...The core objective of this study is to conduct precise and real-time monitoring of the industrial area Dammam located in the Kingdom of Saudi Arabia (KSA) which consists of a number of various chemicals, minerals and petrochemicals along with administrative blocks. The objective of this study is to monitor possible outdoor and indoor air pollutant in the industry working environment. This study shall help us to enable decision to be made on appropriate control measures as may be required to protect the health of employee and occupant who may be exposed to air contamination at workplace. Air pollution monitoring in ambient air environment finding shall be compared with national ambient air quality environmental standard while parameters monitoring in indoor air environment is compared with international standards such as occupational health and safety administration (OSHA), National institute for occupational safety and health (NIOSH) and Australian national health and medical research council (NHMRC). This environment review study for ensuring industry regulatory compliance for the facility and general authority of meteorology and environmental protection (GAMEP) previously known as presidency of meteorology environment (PME). This study shall be comprehensive in nature and cover two major types of monitoring and assessment such as ambient air quality monitoring and indoor air quality monitoring.展开更多
There is an increasing concern that current trends of consumption of natural resources cannot continue.It is imperative that major targeted investments are made into economical and reliable environment friendly propul...There is an increasing concern that current trends of consumption of natural resources cannot continue.It is imperative that major targeted investments are made into economical and reliable environment friendly propulsion and power solutions.Many novel and promising concepts are being proposed.The selection of the best candidates to pursue for investment becomes a very difficult choice.A detailed TERA(techno-economic environmental risk analysis) framework is described here to quantify risks and to compare and rank competing schemes on a formal and consistent basis.This technique is based on detailed and rigorous thermodynamic representations of power plants.A layer of environment,economic,weather and other models to describe the appropriate local conditions is superimposed to this.The outcome is a techno-economic environmental risk analysis framework with appropriate detail of each power plant as applied to the appropriate conditions.The results for each concept can then be compared and contrasted to make appropriate selections.展开更多
An environmental input output model (EIOM) was introduced to the regional solid waste management sectors, which can reflect the direct and indirect relations between the environment and the regional economy developme...An environmental input output model (EIOM) was introduced to the regional solid waste management sectors, which can reflect the direct and indirect relations between the environment and the regional economy development. Some details about how to use the EIOM was discussed. The EIOM was applied to the Changsha City in China. The example results indicate that much useful information related to the environment and the regional economy development can be gained from the solution of the EIOM. Thus, the EIOM can be used as a useful tool for the sustainable development planning including the solid waste management sectors.展开更多
In recent years, the beer industry is a biological food industry that consumes a lot of water, and it has developed rapidly in China. The sewage discharged from the mass production of beer poses a huge threat to the e...In recent years, the beer industry is a biological food industry that consumes a lot of water, and it has developed rapidly in China. The sewage discharged from the mass production of beer poses a huge threat to the environment. In order to evaluate and better solve the possible environmental impacts of beer treatment engineering projects, a brewery project in Foshan City is taken as an example to investigate the water pollution generation links of the engineering process including surface water and groundwater. According to the relevant technical methods and standards, water pollution factors are screened, and concentration and discharge are monitored. Through comprehensive analysis, predictive evaluation is obtained. It is confirmed that the project meets the requirements of national laws and regulations and environmental protection standards.展开更多
1. INTRODUCTION The proposed Three Gorges Project, one of the biggest hydroelectric projects in the world, will dam the middle reaches of the Changjiang (Yangtze) River, the third longest river in the world, and form ...1. INTRODUCTION The proposed Three Gorges Project, one of the biggest hydroelectric projects in the world, will dam the middle reaches of the Changjiang (Yangtze) River, the third longest river in the world, and form a large reservoir. Its impacts on environment have attracted wide attention. Entrusted by National Scientific-Technical Commission, the Chinese Academy of Sciences (CAS) was in charge of a research project on this issuse from 1984 to 1989. Tho use of remote sensing played an important role in the project considering the study area is mountainous and not convenientlv located, which makes it difficult to conduct the research onlv using conventional means.展开更多
1. China’s environmental problems 1) Serious water pollution. Water is most indispensable to people’s life. Contaminated water will seriously affect people’s normal life and cause environmental degradation, putting...1. China’s environmental problems 1) Serious water pollution. Water is most indispensable to people’s life. Contaminated water will seriously affect people’s normal life and cause environmental degradation, putting people in the danger of catching various diseases. Therefore, everyone should save water and make full use of it. However, in China, water pollution is getting worse. China has abun-展开更多
Arctic shipping poses environmental risks due to the region’s fragile ecosystems and rapid climate changes.Effective risk assessment tools are needed to ensure sustainable expansion and to carry out environmental imp...Arctic shipping poses environmental risks due to the region’s fragile ecosystems and rapid climate changes.Effective risk assessment tools are needed to ensure sustainable expansion and to carry out environmental impact assessments.This paper explores applications of Failure Modes and Effects Analysis(FMEA)and Systems-Theoretic Process Analysis(STPA)coupled with the consequences of a“Dynamic baseline approach”for Arctic shipping environmental impact assessment.Shipping entails complex interactions between environmental,technical,human,and organizational factors.FMEA identifies failure modes and their effects through component-level analysis.STPA examines how unsafe control actions can emerge from interactions between system components.Combining these techniques with a dynamic(variable)baseline,accounting for inherent ongoing changing Arctic conditions,offers a robust methodology.A qualitative case study shows that prioritizing hazards by risk,yields highest concerns,as increased greenhouse gas emissions,black carbon deposition on ice and snow,and response delays to accidents represent some of the most important identified threats to the environment.The use of FMEA and STPA are complementary,and differences are highlighted.The methodology applied,should be representative for the qualitative risk analysis methodology,and while the findings are impacted by the perspectives of the authors,the process followed is intended to identify and rank risks in a consistent manner.Mitigations measures must be in place to target these issues.Constant monitoring of the changing ecological and socioeconomic Arctic baselines supports the responses.This methodology offers a starting point for systematically addressing environmental impact risks in the data-limited Arctic.Integrating failure modes and effect analysis,system theories and dynamic baselines,account for identification of the complex interactions,influencing environmental risks in this rapidly evolving region.展开更多
Tuning the nanozyme s activity and specificity is very crucial for developing highly sensitive sensors for various applications. Herein, selenium-doped porous N-doped carbon skeletons(Se/NC) nanozymes with highly spec...Tuning the nanozyme s activity and specificity is very crucial for developing highly sensitive sensors for various applications. Herein, selenium-doped porous N-doped carbon skeletons(Se/NC) nanozymes with highly specific peroxidase-like activity were synthesized by a MOF-pyrolysis-doping protocol. Se doping adjusted the electronic structure of NC by introducing more vacancies, defective carbon and graphitic N,and endowed the resultant Se/NC enhanced charge transfer and substrate affinity. The Se/NC exhibited specific peroxidase-mimicking activity and could catalyze 3,3,5,5-tetramethylbenzidine oxidation by H_(2)O_(2). Density functional theory(DFT) calculations and experimental trials indicated that both Se=O and C–Se–C species were the main active sites of Se/NC. The C–Se–C bond is the main catalytic active site endowing Se/NC with the property of nanozyme, while the Se=O bond effectively enhances its affinity to H_(2)O_(2) and accelerate H2O2dissociation. The Se/NC showed an approximately 185-fold increase in peroxidase-like activity compared to NC. Based on the inhibition of the peroxidase-like activity of Se/NC by methimazole, a colorimetric sensor was developed to achieve its sensitive detection with 2 nmol/L of limit of detection. It was successfully used for detecting methimazole in real samples. Current Se doping strategy simplifies the fabrication process of high performance specific nanozyme and promises great potential for environmental analysis.展开更多
Owing to frequent environmental monitoring of tetrabromobisphenol-A(TBBPA)analogs and their potential ecotoxicological effects on organisms,analysis of trace levels of TBBPA analogs with more non-polar and less water-...Owing to frequent environmental monitoring of tetrabromobisphenol-A(TBBPA)analogs and their potential ecotoxicological effects on organisms,analysis of trace levels of TBBPA analogs with more non-polar and less water-soluble characteristics is of great significance for studying their environmental behaviors and toxic effects.Herein,a fast and sensitive technique is developed for directly detecting aqueous TBBPA analogs,including TBBPA mono(allyl ether)(TBBPA-MAE),TBBPA mono(2,3-dibromopropyl ether)(TBBPAMDBPE),TBBPA mono(2-hydroxyethyl ether)(TBBPA-MHEE)and TBBPA mono(glycidyl ether)(TBBPAMGE),by combining solid phase microextraction(SPME)based on porous covalent organic frameworks(Porous-COFs)with constant flow desorption ionization-mass spectrometry(CFDI-MS).As chromatographic separation is replaced by constant flow desorption,each sample can be analyzed within 7 min.The hierarchical porous structures(microporous,mesoporous and macroporous)of COFs lead to the enhanced mass transfer and the easier accessibility of active sites to TBBPA analogs,so that the extraction efficiency is 2.3-3.6 times higher than pure microporous COFs,and far superior to commercial coatings.The detection limit and quantification limit of this method are 0.1-1 and 0.4-3.2 ng/L,respectively.Ultratrace levels of TBBPA analogs from 5.0 ng/L to 66 ng/L have been successfully detected in river and sea water samples,showing great potential for subsequent studies of their environmental behaviors and toxicological effects.展开更多
Tourism is considered as a potentially sustainable industry and plays a significant role in the development of the society at different levels and is seen as an important step to achieve sustainable development. The d...Tourism is considered as a potentially sustainable industry and plays a significant role in the development of the society at different levels and is seen as an important step to achieve sustainable development. The development of tourism in Noushahr has resulted in instability in terms of environmental aspects. Therefore, given that the process of tourism development in these regions would result in the destruction of the environment and cause many environmental problems as well as the undesirable and instable conditions, the present study aims to explore the environmental effects of the tourism development in Noushahr. To this end, a descriptive-analytic methodology is used to delve into aspects and indicators affecting the sustainable development in terms of environmental factors. In addition, the data are collected through documents and library and field methods. The population under study includes people living in Noushahr and tourists visiting it. The research sample includes 380 families and 384 tourists who were selected through the Cochrane formula. The collected data are analyzed using descriptive and inferential statistics including t-test. Results of the study show that there is a significant relationship between environmental effects and tourism. Besides, the level of negative effects caused by tourists in all cases under investigation is beyond the acceptable level in the view of the local community. As such, tourism should be developed in a way that while responding to tourists’ leisure needs and improving their quality of experience it contributes to improving the quality of the environment.展开更多
China's Belt and Road Initiative has great significance for China's energy security and the economic development of the countries along the route of the Belt and Road Initiative. Focusing on oil and gas cooper...China's Belt and Road Initiative has great significance for China's energy security and the economic development of the countries along the route of the Belt and Road Initiative. Focusing on oil and gas cooperation, the paper aims to define the political, economic, legal, and operational conditions required to facilitate the development of the Belt and Road Initiative by analyzing the advantages, disadvantages, opportunities and risks of China's current international oil and gas cooperation environment. This will help to drive China's international oil and gas partnerships and increase China's discourse power in the international oil and gas markets by exploring new approaches to improving regional communication mechanisms, financial cooperation frameworks, multilateral legal systems and overall strength of the enterprises in the oil and gas industry.展开更多
基金The National Key Research and Development Program of China under contract Nos 2023YFD2401900 and 2020YFD09008004the National Natural Science Foundation of China Key International(Regional)Cooperative Research Project under contract No.42020104009the Basic Public Welfare Research Program of Zhejiang Province under contract No.LGF21D010004.
文摘Mussel aquaculture and large yellow croaker aquaculture areas and their environmental characteristics in Zhoushan were analyzed using satellite data and in-situ surveys.A new two-step remote sensing method was proposed and applied to determine the basic environmental characteristics of the best mussel and large yellow croaker aquaculture areas.This methodology includes the first step of extraction of the location distribution and the second step of the extraction of internal environmental factors.The fishery ranching index(FRI1,FRI2)was established to extract the mussel and the large yellow croaker aquaculture area in Zhoushan,using Gaofen-1(GF-1)and Gaofen-6(GF-6)satellite data with a special resolution of 2 m.In the second step,the environmental factors such as sea surface temperature(SST),chlorophyll a(Chl-a)concentration,current and tide,suspended sediment concentration(SSC)in mussel aquaculture area and large yellow croaker aquaculture area were extracted and analyzed in detail.The results show the following three points.(1)For the extraction of the mussel aquaculture area,FRI1 and FRI2 are complementary,and the combination of FRI1 and FRI2 is suitable to extract the mussel aquaculture area.As for the large yellow croaker aquaculture area extraction,FRI2 is suitable.(2)Mussel aquaculture and the large yellow croaker aquaculture area in Zhoushan are mainly located on the side near the islands that are away from the eastern open waters.The water environment factor template suitable for mussel and large yellow croaker aquaculture was determined.(3)This two-step remote sensing method can be used for the preliminary screening of potential site selection for the mussels and large yellow croaker aquaculture area in the future.the fishery ranching index(FRI1,FRI2)in this paper can be applied to extract the mussel and large yellow croaker aquaculture areas in coastal waters around the world.
基金the National Natural Science Foundation of China(No.21707102)the Fundamental Research Funds for the Central Universities,China(No.22120180524).
文摘Field-effect transistors(FETs)present highly sensitive,rapid,and in situ detection capability in chemical and biological analysis.Recently,two-dimensional(2D)transition-metal dichalcogenides(TMDCs)attract significant attention as FET channel due to their unique structures and outstanding properties.With the booming of studies on TMDC FETs,we aim to give a timely review on TMDCbased FET sensors for environmental analysis in different media.First,theoretical basics on TMDC and FET sensor are introduced.Then,recent advances of TMDC FET sensor for pollutant detection in gaseous and aqueous media are,respectively,discussed.At last,future perspectives and challenges in practical application and commercialization are given for TMDC FET sensors.This article provides an overview on TMDC sensors for a wide variety of analytes with an emphasize on the increasing demand of advanced sensing technologies in environmental analysis.
文摘This paper introduced the history,equipment and mechanism of the microwave digestion method. This paper studied the optimization parameter of digestion conditions, such as acid and acid combination, digestion time and applied microwave power,particle size,and other factors.The analytical performance in environmental research and the modification of the microwave digestion method were also discussed.
文摘For purpose of purification and enrichment, environmental samples usually need to be pretreated before analysis because of low concentration of residual organic matters. Solid-phase extraction （SPE） is one of the frequently used methods of pretreatment. This article introduces the methodological principle and flow channel of SPE as well as the categories of frequently used small extraction column, analyzes the application of online SPE technology in environmental analysis, generalizes the advantages of online SPE and sets forth its developmental trend.
文摘The scope for environmental analysis constitutes a critical factor in recent times, yet demanding importance due to the concerns of environmental sustainability. The study aims at analysing the prospects of implementing an integrated GIS and spatial configuration for environment analysis in Israel. The study adopts an empirical study design to consider the multi-dimensional utilisation of an integrated GIS and spatial configuration for environment analysis. The study considers the materials and methods of the GIS system modelling as well, consisting of satellite imagery, GPS-based location identification, Esri ArcGIS, CyberGIS, and BIM integration to present a comprehensive system for the environmental analysis of Israel. The results of the study indicate that the threats of natural disasters and climate change can be identified based on the synergy of spatial data within an integrated GIS modelling. In many cases, it is also used in collaboration with a BIM to ensure that planning and decision-making processes are sustainable, economically beneficial and environmentally considered. Thus, it is concluded that environmental analysis through the projection of visually represented satellite imagery within an integrated GIS with spatial configurations in Israel can minimise the conflicts between the infrastructural designs, human activities, and environmental sustainability.
文摘In order to give out the correct conclusion for evaluating Chinese eco-environmental situation, in this paper, a special assessmental procedure has been used to analyse following 7 basic environmental problems: (1) Natural hazards; (2) Soil erosion; (3) Forest shrinkage and grassland degradation; (4) Water resources shortage; (5) Desertification; (6) Environmental pollution; (7) Farmland decrease. The basic strategies for improving Chinese environmental situation have been suggested.
基金National Natural Science Foundation of China,Grant/Award Number:22004065China Postdoctoral Science Foundation,Grant/Award Numbers:2019TQ0141,2020M671427+1 种基金Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2020B1515120026Funds for Central Guided Regional Science and Technology Development,Grant/Award Number:2021Szvup058。
文摘Surface-enhanced Raman scattering(SERS)is among the most widely applied analytical techniques due to its easy execution and extreme sensitivity.Target molecules can be detected and distinguished based upon the fingerprint spectra that arise when absorbed on the SERS substrates surface,particularly on the SERS-active hotspots.Thus,rational fabricating the enhancing substrates plays a key role in broadening SERS application.Programmable DNA functionalized plasmonic nanoassemblies,where DNA acts as both structure basis and functional unit,combine the specificity of DNA recognition,and modulate the assembly of plasmonic nanoparticles(NPs).Specifically designed DNA not only improves the selectivity to target molecules but also promotes the sensitivity of the optical signals through precisely regulating the distance between the molecule and the substrate.A variety of DNA-functionalized SERS sensors have been reported and obtained well performance in the analysis of heavy metal ions in water,toxins,pesticide residues,antibiotics,hormones,illicit drugs,or other small molecules.This review places an emphasis on the design and sensing strategies of the DNA-functionalized plasmonic nanoassemblies,as well as basic principles of Raman enhancement,and recent advances for environmental analysis.The current challenges and potential trends in the development of DNAfunctionalized SERS sensors for environmental pollutant monitoring in complicated scenarios are subsequently discussed.
文摘The core objective of this study is to conduct precise and real-time monitoring of the industrial area Dammam located in the Kingdom of Saudi Arabia (KSA) which consists of a number of various chemicals, minerals and petrochemicals along with administrative blocks. The objective of this study is to monitor possible outdoor and indoor air pollutant in the industry working environment. This study shall help us to enable decision to be made on appropriate control measures as may be required to protect the health of employee and occupant who may be exposed to air contamination at workplace. Air pollution monitoring in ambient air environment finding shall be compared with national ambient air quality environmental standard while parameters monitoring in indoor air environment is compared with international standards such as occupational health and safety administration (OSHA), National institute for occupational safety and health (NIOSH) and Australian national health and medical research council (NHMRC). This environment review study for ensuring industry regulatory compliance for the facility and general authority of meteorology and environmental protection (GAMEP) previously known as presidency of meteorology environment (PME). This study shall be comprehensive in nature and cover two major types of monitoring and assessment such as ambient air quality monitoring and indoor air quality monitoring.
文摘There is an increasing concern that current trends of consumption of natural resources cannot continue.It is imperative that major targeted investments are made into economical and reliable environment friendly propulsion and power solutions.Many novel and promising concepts are being proposed.The selection of the best candidates to pursue for investment becomes a very difficult choice.A detailed TERA(techno-economic environmental risk analysis) framework is described here to quantify risks and to compare and rank competing schemes on a formal and consistent basis.This technique is based on detailed and rigorous thermodynamic representations of power plants.A layer of environment,economic,weather and other models to describe the appropriate local conditions is superimposed to this.The outcome is a techno-economic environmental risk analysis framework with appropriate detail of each power plant as applied to the appropriate conditions.The results for each concept can then be compared and contrasted to make appropriate selections.
文摘An environmental input output model (EIOM) was introduced to the regional solid waste management sectors, which can reflect the direct and indirect relations between the environment and the regional economy development. Some details about how to use the EIOM was discussed. The EIOM was applied to the Changsha City in China. The example results indicate that much useful information related to the environment and the regional economy development can be gained from the solution of the EIOM. Thus, the EIOM can be used as a useful tool for the sustainable development planning including the solid waste management sectors.
基金Supported by Key Fields of Universities in Guangdong Province (Science and Technology Service for Rural Revitalization)(2021ZDZX4023)2021 Undergraduate Teaching Quality and Teaching Construction Project of Guangdong Province (Guangdong Education Gao Han [2021] 29)+1 种基金Zhaoqing University Quality Engineering and Teaching Reform Project (zlgc 201931)Zhaoqing University Students’Innovation and Entrepreneurship Training Program in 2022 (X 202210580130)。
文摘In recent years, the beer industry is a biological food industry that consumes a lot of water, and it has developed rapidly in China. The sewage discharged from the mass production of beer poses a huge threat to the environment. In order to evaluate and better solve the possible environmental impacts of beer treatment engineering projects, a brewery project in Foshan City is taken as an example to investigate the water pollution generation links of the engineering process including surface water and groundwater. According to the relevant technical methods and standards, water pollution factors are screened, and concentration and discharge are monitored. Through comprehensive analysis, predictive evaluation is obtained. It is confirmed that the project meets the requirements of national laws and regulations and environmental protection standards.
文摘1. INTRODUCTION The proposed Three Gorges Project, one of the biggest hydroelectric projects in the world, will dam the middle reaches of the Changjiang (Yangtze) River, the third longest river in the world, and form a large reservoir. Its impacts on environment have attracted wide attention. Entrusted by National Scientific-Technical Commission, the Chinese Academy of Sciences (CAS) was in charge of a research project on this issuse from 1984 to 1989. Tho use of remote sensing played an important role in the project considering the study area is mountainous and not convenientlv located, which makes it difficult to conduct the research onlv using conventional means.
文摘1. China’s environmental problems 1) Serious water pollution. Water is most indispensable to people’s life. Contaminated water will seriously affect people’s normal life and cause environmental degradation, putting people in the danger of catching various diseases. Therefore, everyone should save water and make full use of it. However, in China, water pollution is getting worse. China has abun-
基金supported in parts by funds provided by“The Program for Maritim Competence(MARKOM II),”(https://www.markomii.no/om-markomii/),project 10039funds made available to UIT,The Arctic University of Norway。
文摘Arctic shipping poses environmental risks due to the region’s fragile ecosystems and rapid climate changes.Effective risk assessment tools are needed to ensure sustainable expansion and to carry out environmental impact assessments.This paper explores applications of Failure Modes and Effects Analysis(FMEA)and Systems-Theoretic Process Analysis(STPA)coupled with the consequences of a“Dynamic baseline approach”for Arctic shipping environmental impact assessment.Shipping entails complex interactions between environmental,technical,human,and organizational factors.FMEA identifies failure modes and their effects through component-level analysis.STPA examines how unsafe control actions can emerge from interactions between system components.Combining these techniques with a dynamic(variable)baseline,accounting for inherent ongoing changing Arctic conditions,offers a robust methodology.A qualitative case study shows that prioritizing hazards by risk,yields highest concerns,as increased greenhouse gas emissions,black carbon deposition on ice and snow,and response delays to accidents represent some of the most important identified threats to the environment.The use of FMEA and STPA are complementary,and differences are highlighted.The methodology applied,should be representative for the qualitative risk analysis methodology,and while the findings are impacted by the perspectives of the authors,the process followed is intended to identify and rank risks in a consistent manner.Mitigations measures must be in place to target these issues.Constant monitoring of the changing ecological and socioeconomic Arctic baselines supports the responses.This methodology offers a starting point for systematically addressing environmental impact risks in the data-limited Arctic.Integrating failure modes and effect analysis,system theories and dynamic baselines,account for identification of the complex interactions,influencing environmental risks in this rapidly evolving region.
文摘Tuning the nanozyme s activity and specificity is very crucial for developing highly sensitive sensors for various applications. Herein, selenium-doped porous N-doped carbon skeletons(Se/NC) nanozymes with highly specific peroxidase-like activity were synthesized by a MOF-pyrolysis-doping protocol. Se doping adjusted the electronic structure of NC by introducing more vacancies, defective carbon and graphitic N,and endowed the resultant Se/NC enhanced charge transfer and substrate affinity. The Se/NC exhibited specific peroxidase-mimicking activity and could catalyze 3,3,5,5-tetramethylbenzidine oxidation by H_(2)O_(2). Density functional theory(DFT) calculations and experimental trials indicated that both Se=O and C–Se–C species were the main active sites of Se/NC. The C–Se–C bond is the main catalytic active site endowing Se/NC with the property of nanozyme, while the Se=O bond effectively enhances its affinity to H_(2)O_(2) and accelerate H2O2dissociation. The Se/NC showed an approximately 185-fold increase in peroxidase-like activity compared to NC. Based on the inhibition of the peroxidase-like activity of Se/NC by methimazole, a colorimetric sensor was developed to achieve its sensitive detection with 2 nmol/L of limit of detection. It was successfully used for detecting methimazole in real samples. Current Se doping strategy simplifies the fabrication process of high performance specific nanozyme and promises great potential for environmental analysis.
基金financially supported by the National Natural Science Foundation of China(Nos.21922402,21976185)the Innovation Academy for Green Manufacture,Chinese Academy of Sciences(No.IAGM2020C20)。
文摘Owing to frequent environmental monitoring of tetrabromobisphenol-A(TBBPA)analogs and their potential ecotoxicological effects on organisms,analysis of trace levels of TBBPA analogs with more non-polar and less water-soluble characteristics is of great significance for studying their environmental behaviors and toxic effects.Herein,a fast and sensitive technique is developed for directly detecting aqueous TBBPA analogs,including TBBPA mono(allyl ether)(TBBPA-MAE),TBBPA mono(2,3-dibromopropyl ether)(TBBPAMDBPE),TBBPA mono(2-hydroxyethyl ether)(TBBPA-MHEE)and TBBPA mono(glycidyl ether)(TBBPAMGE),by combining solid phase microextraction(SPME)based on porous covalent organic frameworks(Porous-COFs)with constant flow desorption ionization-mass spectrometry(CFDI-MS).As chromatographic separation is replaced by constant flow desorption,each sample can be analyzed within 7 min.The hierarchical porous structures(microporous,mesoporous and macroporous)of COFs lead to the enhanced mass transfer and the easier accessibility of active sites to TBBPA analogs,so that the extraction efficiency is 2.3-3.6 times higher than pure microporous COFs,and far superior to commercial coatings.The detection limit and quantification limit of this method are 0.1-1 and 0.4-3.2 ng/L,respectively.Ultratrace levels of TBBPA analogs from 5.0 ng/L to 66 ng/L have been successfully detected in river and sea water samples,showing great potential for subsequent studies of their environmental behaviors and toxicological effects.
文摘Tourism is considered as a potentially sustainable industry and plays a significant role in the development of the society at different levels and is seen as an important step to achieve sustainable development. The development of tourism in Noushahr has resulted in instability in terms of environmental aspects. Therefore, given that the process of tourism development in these regions would result in the destruction of the environment and cause many environmental problems as well as the undesirable and instable conditions, the present study aims to explore the environmental effects of the tourism development in Noushahr. To this end, a descriptive-analytic methodology is used to delve into aspects and indicators affecting the sustainable development in terms of environmental factors. In addition, the data are collected through documents and library and field methods. The population under study includes people living in Noushahr and tourists visiting it. The research sample includes 380 families and 384 tourists who were selected through the Cochrane formula. The collected data are analyzed using descriptive and inferential statistics including t-test. Results of the study show that there is a significant relationship between environmental effects and tourism. Besides, the level of negative effects caused by tourists in all cases under investigation is beyond the acceptable level in the view of the local community. As such, tourism should be developed in a way that while responding to tourists’ leisure needs and improving their quality of experience it contributes to improving the quality of the environment.
基金Study on the Strategy of Cooperation Between Chinese Oil and Gas Enterprises and Central Asia in the Context of the Belt and Road Initiative,Philosophy and Social Science Planning Project of Sichuan Province(Project No.:SC16B111)
文摘China's Belt and Road Initiative has great significance for China's energy security and the economic development of the countries along the route of the Belt and Road Initiative. Focusing on oil and gas cooperation, the paper aims to define the political, economic, legal, and operational conditions required to facilitate the development of the Belt and Road Initiative by analyzing the advantages, disadvantages, opportunities and risks of China's current international oil and gas cooperation environment. This will help to drive China's international oil and gas partnerships and increase China's discourse power in the international oil and gas markets by exploring new approaches to improving regional communication mechanisms, financial cooperation frameworks, multilateral legal systems and overall strength of the enterprises in the oil and gas industry.
