A field survey concerning lead and cadmium pollution in environment mediums and hair samples around the Chatian mercury mining deposit in western Hunan Province,China,was conducted to preliminarily evaluate their heal...A field survey concerning lead and cadmium pollution in environment mediums and hair samples around the Chatian mercury mining deposit in western Hunan Province,China,was conducted to preliminarily evaluate their health hazard to local inhabitants.The results show that mining wastes,especially tailing,contain high cadmium level with the maximum of 79.92μg/g. High levels of lead and cadmium are accumulated in surface water and paddy soil,respectively,and both metals pollution occurs in brown rice.The average daily intake dose(ADD)of lead for local adults via three routes reaches up to 7.7μg/(kg·d),exceeding the provision tolerable daily intake by JECFA of 3.5μg/(kg·d),and drinking water exposure route contributes the highest daily intake.As an indicator for heavy metal exposure,the hair of local population contains Pb(5.06±3.02)μg/g.The average daily intake dose of cadmium for adults is 0.119μg/(kg·d).More attention must be paid on health risk from lead pollution compared with cadmium.展开更多
Nowadays, oil spills have led to a serious environmental crisis of the world. To deal with this problem, inspired from super-hydrophobic lotus leaf, this study fabricated super-hydrophobic and super-lipophilic functio...Nowadays, oil spills have led to a serious environmental crisis of the world. To deal with this problem, inspired from super-hydrophobic lotus leaf, this study fabricated super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane (FGP) sponge by a simple and inexpensive dip coating method. The resulting FGP sponge was characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and water contact angle. The results expressed that FGP sponge exhibited a similar surface structure to that of a lotus leaf, and possessed the super-hydrophobic characteristic with the water contact angle (WAC) of 152°± 1 °. The absorption capacity and reusability were also investigated. It can be seen that, the FGP sponge can remove a wide range of oils and organic solvents from water with good absorption capacities (up to 35 times of its own mass). Significantly, after 10 cycles the absorption capacity of the oils and organic solvents was higher than 90°; for the reused FGP sponge, demonstrating the good reusability of the FGP sponge. Therefore, this study probably provided a simole way to remove the pollutions ofoil spills and toxic organism from water.展开更多
Based on the data of phytoplankton concentration and environmental factors in Bohai Bay from May to September in 2003. the relationship between environmental factors and phytoplankton biomass was analyzed. By analysis...Based on the data of phytoplankton concentration and environmental factors in Bohai Bay from May to September in 2003. the relationship between environmental factors and phytoplankton biomass was analyzed. By analysis of variance, the weather condition was found to have no direct relation with phytoplankton biomass. Correlation coefficients showed that temperature, pH value,the concentrations of silicate and nitrate exhibited linear relationship with phytoplankton biomass.With principal component analysis, pollution types which affected the abundance of phytoplankton included point sources such as municipal and industrial effluents, agricultural runoff and earth's surface water. Using multivariate stepwise regression method and taking the correlation analysis results into consideration, a multi-step regression equation was developed to predict the concentration of phytoplankton in September 2003. Combined results show that temperature, pH value, the concentrations of silicate and nitrate are the critical ecological factors affecting the phytoplankton biomass in Bohai Bay.展开更多
This study presents a statistical landslide susceptibility assessment(LSA) in a dynamic environment. The study area is located in the eastern part of Lanzhou, NW China. The Lanzhou area has exhibited rapid urbanizatio...This study presents a statistical landslide susceptibility assessment(LSA) in a dynamic environment. The study area is located in the eastern part of Lanzhou, NW China. The Lanzhou area has exhibited rapid urbanization rates over the past decade associated with greening, continuous land use change, and geomorphic reshaping activities. To consider the dynamics of the environment in the LSA, multitemporal data for landslide inventories and the corresponding causal factors were collected. The weights of evidence(Wof E) method was used to perform the LSA. Three time stamps, i.e., 2000, 2012, and 2016, were selected to assess the state of landslide susceptibility over time. The results show a clear evolution of the landslide susceptibility patterns that was mainly governed by anthropogenic activities directed toward generating safer building grounds for civil infrastructure. The low and very low susceptibility areas increased by approximately 10% between 2000 and 2016. At the same time, areas of medium, high and very high susceptibility zones decreased proportionally. Based on the results, an approach to design the statistical LSA under dynamic conditions is proposed, the issues and limitations of this approach are also discussed. The study shows that under dynamic conditions, the requirements for data quantity and quality increase significantly. A dynamic environment requires greater effort to estimate the causal relations between the landslides and controlling factors as well as for model validation.展开更多
Described the main environmental hazards occurring in Polish undergroundmines and their continuous growth in recent years as well as equipment and systemswhich were used for monitoring mine air parameters and geodynam...Described the main environmental hazards occurring in Polish undergroundmines and their continuous growth in recent years as well as equipment and systemswhich were used for monitoring mine air parameters and geodynamic phenomena.Thelatest versions of environmental hazard monitoring systems,having a form of a comprehensiveset of underground and surface equipment,are presented and their functionscharacterized.展开更多
The informal construction sector is unregulated and operates in a risky environment, thus the need for adoption of appropriate risk management strategies for its survival is essential. Therefore, the aim of this study...The informal construction sector is unregulated and operates in a risky environment, thus the need for adoption of appropriate risk management strategies for its survival is essential. Therefore, the aim of this study was to examine methods used in choosing appropriate risk response strategy in informal construction sector in Tanzania. The study involved construction workers in informal sector in Dar es Salaam and Mwanza in Tanzania. Dar es Salaam and Mwanza are among big cities in Tanzania having more informal construction workers. Questionnaires were prepared in English, translated in Kiswahili and administered by research assistants on informal construction workers. Workers were purposively selected. Out of 1,000 questionnaires distributed 849 questionnaires were fairly filled equating to 84.9%. The collected data was coded and analysed using descriptive statistics mainly frequencies cross tabulation and Chi-square tests. The study established that majority of informal construction workers choose risk response strategies by using common sense followed by previous experience. Within the location, the methods significantly differ whereby Dar es Salaam was dominated by common sense and Mwanza dominated by previous experience. Likewise, use of common sense among respondents was significantly different between gender, age group, level of education and experience. This implies that apart from formal process of choosing risk response strategies, the informal construction sector has its own surviving strategies. The issue of location, gender and experience are essential for risk management in informal construction sector.展开更多
This paper discusses transformative learning in relation to environmental crisis in rural communities in Guanajuato (Mexico). Environmental pollution and resource depletion have triggered reflection and perspective ...This paper discusses transformative learning in relation to environmental crisis in rural communities in Guanajuato (Mexico). Environmental pollution and resource depletion have triggered reflection and perspective transformation across groups of rural communities. The study is qualitative and results are based on lengthy interviews, within a well-known context for the researcher. This article is the reflection on how transformative learning took place looking fol; lessons to be learnt for communities facing environmental challenges.展开更多
The environmental problems can not be addressed in all their depth and complexity, and the most viable solutions can be made only by direct and continuous reference to the large issues of the development of the societ...The environmental problems can not be addressed in all their depth and complexity, and the most viable solutions can be made only by direct and continuous reference to the large issues of the development of the society as a whole. Environment and economic development are indissoluble, the first is where we all live, and development is what we all do to improve our fate in this environment. A main cause is the attitude of economic operators towards the environment, an attitude according to which profit should be pursued immediately, while nature protection is left for later. Ecological crisis is a new phenomenon, but derived from anthropological crisis. This reflects, at a global level, man's inner crisis. Every man in part, and not people or humanity in general, is responsible for this crisis. Individual responsibility is not a question of quality, but a question of quantity. The ecological crisis is linked to the personal and social life of man as a whole. The convenience, lack of respect for things, irrational waste, lack of measure, irresponsibility, injustice, exploitation, winning dirty money, eudemonism, which manifest on all aspects of life and human activity, are factors that provoke it. And, unfortunately, they maintain it.展开更多
The recent devastation caused by natural calamities in the Philippines has prompted the government to initiate programs that might not altogether prevent but at least minimize the dire effects of future disasters. Amo...The recent devastation caused by natural calamities in the Philippines has prompted the government to initiate programs that might not altogether prevent but at least minimize the dire effects of future disasters. Among these programs are the information campaigns to promote awareness among the communities in calamity-prone areas Several symposia that provide venue for the discussion of environmental "bads" have been conducted, but none yet has explored the perceptions of the indigenous peoples, staunch "defenders" and protectors of the environment who themselves are victims of such calamities. This paper seeks to highlight the perceptions of the indigenous people on the causes and impact of environmental "bads" through literature inspired by their experiences. When Gods Cry is an unpublished anthology of fiction inspired by the author's interaction with indigenous communities in southern Philippines while doing research on oral traditions. Three works of fiction are discussed in this paper, namely: The OldMan andthe Mountain (2012), Loom of Dreams (2012), and Waterfall (2012). Each of these works highlights the indigenous people's struggle to protect their ancestral domains and the environment, their home, against external factors. Thematic literary analysis is used in the discussion of the contents of each work.展开更多
In order to study the karstological processes within the karst ecological system,the geohazards and degradation of karst landscapes on the karst areas of the Bakony mountains(Hungary),we investigated the abiotic eleme...In order to study the karstological processes within the karst ecological system,the geohazards and degradation of karst landscapes on the karst areas of the Bakony mountains(Hungary),we investigated the abiotic elements of the environment,soil and cover deposits,erosion soil decay;the changes in the quantity and quality of karst waters:contamination at swallow holes,contamination of karst springs;and the biogenic factors:surface vegetation coverage by the corine land cover method,plant-ecological examinations,qualification of surface waters with the help of biological water labeling.We recognized that the increasing human activities during the past few centuries have had significant impact on the investigated landscapes of karst areas because of their spatial sensitivity.In the scope of our research we concluded that the landscape changes due to natural and human effects can vary strongly on the different karst areas.These differences can arise from the climatic and geomorphologic situation,the coverlayer's qualities,etc.,but primarily from the different utilization of the investigated karst areas(e.g.the intensity,characteristics and territorial extension of utilization).On the spot investigation we detected traces of new and fast geomorphological processes(gully formation,landslides,collapses,new sinkhole development) and landforms(sinkholes,gullies,swallow holes),which are clear evidences of the effect of climatic changes.展开更多
The way that humans think about the earth certainly affects the way that they relate and behave towards the earth and all its life forms. The various ideologies or worldviews that humanity has experienced such as dual...The way that humans think about the earth certainly affects the way that they relate and behave towards the earth and all its life forms. The various ideologies or worldviews that humanity has experienced such as dualism, capitalism, holism, animism, ubuntu, ukama, vital force, colonialism, and so forth are all different ways of thinking and relating to the earth. The paper argues that dualistic ways of thinking or viewpoints that radically separate the human as distinct from the earth are hostile to both human and earth flourishing. It further argues that the ecological crisis which has witnessed the destruction and pollution of the ecosystems and other devastations cannot be solved when humans continue to see the earth as an object for conquest and exploitation. Using a critical hermeneutics method, the paper affirms that the African principle of relationality can help in mitigating the environmental crisis. It finds and concludes that if this principle is radically practiced, a better environment will be created.展开更多
The increase in car ownership brought about by energy shortages,and environmental crises became more acute.The most effective way to achieve energy saving and emission reduction of car is to improve engine efficiency....The increase in car ownership brought about by energy shortages,and environmental crises became more acute.The most effective way to achieve energy saving and emission reduction of car is to improve engine efficiency.In addition to that,lightweight body is the key.Aluminum,magnesium alloy as significant materials of lightweight,and the application amount in the car body is a significant upward trend.However,there is high cost of material,with immature applied technology and a series of bottleneck problems.All of them affect general application of lightweight materials. This paper focuses on forming process issues for aluminum,magnesium alloy and the solutions to achieve.展开更多
Archaeological sites are most visible records of our cultural heritage, These sites are often constructed of stone threaten by geomorphological processing, pollution, urbanization, public access, groundwater seepage a...Archaeological sites are most visible records of our cultural heritage, These sites are often constructed of stone threaten by geomorphological processing, pollution, urbanization, public access, groundwater seepage and geological hazards, such as rock falls. These archaeological sites suffered deterioration and failure of some parts. Environmental hazards are the main agent responsible for the monument degrading knowledge of intensity of environmental hazards together with their aggressiveness characteristics surrounding the monumentally area which is important during all phases restoration process (both previous and to be executed in situ). The main geo-environmental hazards which affect the monuments under investigation; weathering, air pollution, seismic activity.展开更多
基金Project(40571008)supported by the National Natural Science Foundation of ChinaProject(KZCX3-SW-437)supported by Knowledge Innovation Programs of the Chinese Academy of Sciences
文摘A field survey concerning lead and cadmium pollution in environment mediums and hair samples around the Chatian mercury mining deposit in western Hunan Province,China,was conducted to preliminarily evaluate their health hazard to local inhabitants.The results show that mining wastes,especially tailing,contain high cadmium level with the maximum of 79.92μg/g. High levels of lead and cadmium are accumulated in surface water and paddy soil,respectively,and both metals pollution occurs in brown rice.The average daily intake dose(ADD)of lead for local adults via three routes reaches up to 7.7μg/(kg·d),exceeding the provision tolerable daily intake by JECFA of 3.5μg/(kg·d),and drinking water exposure route contributes the highest daily intake.As an indicator for heavy metal exposure,the hair of local population contains Pb(5.06±3.02)μg/g.The average daily intake dose of cadmium for adults is 0.119μg/(kg·d).More attention must be paid on health risk from lead pollution compared with cadmium.
基金Supported by the National Natural Science Foundation of China(21776319)
文摘Nowadays, oil spills have led to a serious environmental crisis of the world. To deal with this problem, inspired from super-hydrophobic lotus leaf, this study fabricated super-hydrophobic and super-lipophilic functionalized graphene oxide/polyurethane (FGP) sponge by a simple and inexpensive dip coating method. The resulting FGP sponge was characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and water contact angle. The results expressed that FGP sponge exhibited a similar surface structure to that of a lotus leaf, and possessed the super-hydrophobic characteristic with the water contact angle (WAC) of 152°± 1 °. The absorption capacity and reusability were also investigated. It can be seen that, the FGP sponge can remove a wide range of oils and organic solvents from water with good absorption capacities (up to 35 times of its own mass). Significantly, after 10 cycles the absorption capacity of the oils and organic solvents was higher than 90°; for the reused FGP sponge, demonstrating the good reusability of the FGP sponge. Therefore, this study probably provided a simole way to remove the pollutions ofoil spills and toxic organism from water.
基金Supported by National Natural Science Foundation of China(No.10472077).
文摘Based on the data of phytoplankton concentration and environmental factors in Bohai Bay from May to September in 2003. the relationship between environmental factors and phytoplankton biomass was analyzed. By analysis of variance, the weather condition was found to have no direct relation with phytoplankton biomass. Correlation coefficients showed that temperature, pH value,the concentrations of silicate and nitrate exhibited linear relationship with phytoplankton biomass.With principal component analysis, pollution types which affected the abundance of phytoplankton included point sources such as municipal and industrial effluents, agricultural runoff and earth's surface water. Using multivariate stepwise regression method and taking the correlation analysis results into consideration, a multi-step regression equation was developed to predict the concentration of phytoplankton in September 2003. Combined results show that temperature, pH value, the concentrations of silicate and nitrate are the critical ecological factors affecting the phytoplankton biomass in Bohai Bay.
基金the framework of a scientific-technical cooperation project between the Federal Institute for Geosciences and Natural Resources(BGR)and the China Geological Survey(CGS)co-funded by the German Ministry of the Economic Affairs and Energy(BMWi)and Ministry of Land and Resources of the People's Republik of China
文摘This study presents a statistical landslide susceptibility assessment(LSA) in a dynamic environment. The study area is located in the eastern part of Lanzhou, NW China. The Lanzhou area has exhibited rapid urbanization rates over the past decade associated with greening, continuous land use change, and geomorphic reshaping activities. To consider the dynamics of the environment in the LSA, multitemporal data for landslide inventories and the corresponding causal factors were collected. The weights of evidence(Wof E) method was used to perform the LSA. Three time stamps, i.e., 2000, 2012, and 2016, were selected to assess the state of landslide susceptibility over time. The results show a clear evolution of the landslide susceptibility patterns that was mainly governed by anthropogenic activities directed toward generating safer building grounds for civil infrastructure. The low and very low susceptibility areas increased by approximately 10% between 2000 and 2016. At the same time, areas of medium, high and very high susceptibility zones decreased proportionally. Based on the results, an approach to design the statistical LSA under dynamic conditions is proposed, the issues and limitations of this approach are also discussed. The study shows that under dynamic conditions, the requirements for data quantity and quality increase significantly. A dynamic environment requires greater effort to estimate the causal relations between the landslides and controlling factors as well as for model validation.
文摘Described the main environmental hazards occurring in Polish undergroundmines and their continuous growth in recent years as well as equipment and systemswhich were used for monitoring mine air parameters and geodynamic phenomena.Thelatest versions of environmental hazard monitoring systems,having a form of a comprehensiveset of underground and surface equipment,are presented and their functionscharacterized.
文摘The informal construction sector is unregulated and operates in a risky environment, thus the need for adoption of appropriate risk management strategies for its survival is essential. Therefore, the aim of this study was to examine methods used in choosing appropriate risk response strategy in informal construction sector in Tanzania. The study involved construction workers in informal sector in Dar es Salaam and Mwanza in Tanzania. Dar es Salaam and Mwanza are among big cities in Tanzania having more informal construction workers. Questionnaires were prepared in English, translated in Kiswahili and administered by research assistants on informal construction workers. Workers were purposively selected. Out of 1,000 questionnaires distributed 849 questionnaires were fairly filled equating to 84.9%. The collected data was coded and analysed using descriptive statistics mainly frequencies cross tabulation and Chi-square tests. The study established that majority of informal construction workers choose risk response strategies by using common sense followed by previous experience. Within the location, the methods significantly differ whereby Dar es Salaam was dominated by common sense and Mwanza dominated by previous experience. Likewise, use of common sense among respondents was significantly different between gender, age group, level of education and experience. This implies that apart from formal process of choosing risk response strategies, the informal construction sector has its own surviving strategies. The issue of location, gender and experience are essential for risk management in informal construction sector.
文摘This paper discusses transformative learning in relation to environmental crisis in rural communities in Guanajuato (Mexico). Environmental pollution and resource depletion have triggered reflection and perspective transformation across groups of rural communities. The study is qualitative and results are based on lengthy interviews, within a well-known context for the researcher. This article is the reflection on how transformative learning took place looking fol; lessons to be learnt for communities facing environmental challenges.
文摘The environmental problems can not be addressed in all their depth and complexity, and the most viable solutions can be made only by direct and continuous reference to the large issues of the development of the society as a whole. Environment and economic development are indissoluble, the first is where we all live, and development is what we all do to improve our fate in this environment. A main cause is the attitude of economic operators towards the environment, an attitude according to which profit should be pursued immediately, while nature protection is left for later. Ecological crisis is a new phenomenon, but derived from anthropological crisis. This reflects, at a global level, man's inner crisis. Every man in part, and not people or humanity in general, is responsible for this crisis. Individual responsibility is not a question of quality, but a question of quantity. The ecological crisis is linked to the personal and social life of man as a whole. The convenience, lack of respect for things, irrational waste, lack of measure, irresponsibility, injustice, exploitation, winning dirty money, eudemonism, which manifest on all aspects of life and human activity, are factors that provoke it. And, unfortunately, they maintain it.
文摘The recent devastation caused by natural calamities in the Philippines has prompted the government to initiate programs that might not altogether prevent but at least minimize the dire effects of future disasters. Among these programs are the information campaigns to promote awareness among the communities in calamity-prone areas Several symposia that provide venue for the discussion of environmental "bads" have been conducted, but none yet has explored the perceptions of the indigenous peoples, staunch "defenders" and protectors of the environment who themselves are victims of such calamities. This paper seeks to highlight the perceptions of the indigenous people on the causes and impact of environmental "bads" through literature inspired by their experiences. When Gods Cry is an unpublished anthology of fiction inspired by the author's interaction with indigenous communities in southern Philippines while doing research on oral traditions. Three works of fiction are discussed in this paper, namely: The OldMan andthe Mountain (2012), Loom of Dreams (2012), and Waterfall (2012). Each of these works highlights the indigenous people's struggle to protect their ancestral domains and the environment, their home, against external factors. Thematic literary analysis is used in the discussion of the contents of each work.
基金This presentation gives an account on the results of the study (OTKA Grant:K 79135)
文摘In order to study the karstological processes within the karst ecological system,the geohazards and degradation of karst landscapes on the karst areas of the Bakony mountains(Hungary),we investigated the abiotic elements of the environment,soil and cover deposits,erosion soil decay;the changes in the quantity and quality of karst waters:contamination at swallow holes,contamination of karst springs;and the biogenic factors:surface vegetation coverage by the corine land cover method,plant-ecological examinations,qualification of surface waters with the help of biological water labeling.We recognized that the increasing human activities during the past few centuries have had significant impact on the investigated landscapes of karst areas because of their spatial sensitivity.In the scope of our research we concluded that the landscape changes due to natural and human effects can vary strongly on the different karst areas.These differences can arise from the climatic and geomorphologic situation,the coverlayer's qualities,etc.,but primarily from the different utilization of the investigated karst areas(e.g.the intensity,characteristics and territorial extension of utilization).On the spot investigation we detected traces of new and fast geomorphological processes(gully formation,landslides,collapses,new sinkhole development) and landforms(sinkholes,gullies,swallow holes),which are clear evidences of the effect of climatic changes.
文摘The way that humans think about the earth certainly affects the way that they relate and behave towards the earth and all its life forms. The various ideologies or worldviews that humanity has experienced such as dualism, capitalism, holism, animism, ubuntu, ukama, vital force, colonialism, and so forth are all different ways of thinking and relating to the earth. The paper argues that dualistic ways of thinking or viewpoints that radically separate the human as distinct from the earth are hostile to both human and earth flourishing. It further argues that the ecological crisis which has witnessed the destruction and pollution of the ecosystems and other devastations cannot be solved when humans continue to see the earth as an object for conquest and exploitation. Using a critical hermeneutics method, the paper affirms that the African principle of relationality can help in mitigating the environmental crisis. It finds and concludes that if this principle is radically practiced, a better environment will be created.
文摘The increase in car ownership brought about by energy shortages,and environmental crises became more acute.The most effective way to achieve energy saving and emission reduction of car is to improve engine efficiency.In addition to that,lightweight body is the key.Aluminum,magnesium alloy as significant materials of lightweight,and the application amount in the car body is a significant upward trend.However,there is high cost of material,with immature applied technology and a series of bottleneck problems.All of them affect general application of lightweight materials. This paper focuses on forming process issues for aluminum,magnesium alloy and the solutions to achieve.
文摘Archaeological sites are most visible records of our cultural heritage, These sites are often constructed of stone threaten by geomorphological processing, pollution, urbanization, public access, groundwater seepage and geological hazards, such as rock falls. These archaeological sites suffered deterioration and failure of some parts. Environmental hazards are the main agent responsible for the monument degrading knowledge of intensity of environmental hazards together with their aggressiveness characteristics surrounding the monumentally area which is important during all phases restoration process (both previous and to be executed in situ). The main geo-environmental hazards which affect the monuments under investigation; weathering, air pollution, seismic activity.