Environmental endocrine disrupting chemicals （EDCs）, commonly found in the environment, come from industry and agriculture, including pesticides, fungicides, insecticides, herbicides, and other chemicals. Nowadays, ...Environmental endocrine disrupting chemicals （EDCs）, commonly found in the environment, come from industry and agriculture, including pesticides, fungicides, insecticides, herbicides, and other chemicals. Nowadays, more and more EDCs were released into the environment. EDCs go into water body via atmosphere sedi-mentation, surface runoff, soil eluviation, etc., so water body becomes the main place for existing. In order to attract scientific and public attention worldwide and to prevent EDCs pol ution, in this study we reviewed the classification of EDCs and their concentrations in natural water bodies, drinking water sources and water plants, and the reproductive toxicity of EDCs to fish were reviewed. EDCs could disturb the endocrine system and make reproductive organs and reproduction abnor-mal, resulting in fertility descending, reproduction function damage, community quan-tity decrease and even species extinction. In addition, EDCs could disrupt the homeostasis maintained by hormones, which would result in defects of neural de-velopment and abnormalities of the endocrine and reproductive systems. The exact molecular mechanisms have not been completely reported, but researches have suggested that multiple mechanisms were involved in the action of EDCs. Although there have been researches on the biohazard of EDCs, there stil exist problems of weakness in fundamental researches, difficulties in recognizing and identifying EDCs and high cost, which restraint the knowledge on them.展开更多
Addressing the problems related to the widespread presence of an increasing number of chemicals released into the environment by human activities represents one of the most important challenges of this century. In the...Addressing the problems related to the widespread presence of an increasing number of chemicals released into the environment by human activities represents one of the most important challenges of this century. In the last few years, to replace the high cost, in terms of time and money, of conventional technologies, the scientific community has directed considerable research towards the development both of new detection systems for the measurement of the contamination levels of chemicals in people's body fluids and tissue, as well as in the environment, and of new remediation strategies for the removal of such chemicals from the environment, as a means of the prevention of human diseases. New emerging biosensors for the analysis of environmental chemicals have been proposed, including VHH antibodies, that combine the antibody performance with the affinity for small molecules, genetically engineered microorganisms, aptamers and new highly stable enzymes. However, the advances in the field of chemicals monitoring are still far from producing a continuous realtime and on-line system for their detection. Better results have been obtained in the development of strategies which use organisms(microorganisms, plants and animals) or metabolic pathway-based approaches(single enzymes or more complex enzymatic solutions) for the fixation, degradation and detoxification of chemicals in the environment. Systems for enzymatic detoxification and degradation of toxic agents in wastewater from chemical and manufacturing industries, such as ligninolytic enzymes for the treatment of wastewater from the textile industry, have been proposed. Considering the high value of these research studies, in terms of the protection of human health and of the ecosystem, science must play a major role in guiding policy changes in this field.展开更多
Evaluation of the elimination and the “ultimate” biodegradation by aerobic microorganisms of some organic compounds commonly used in paper manufacturing technology was investigated. Biodegradation lines of nine orga...Evaluation of the elimination and the “ultimate” biodegradation by aerobic microorganisms of some organic compounds commonly used in paper manufacturing technology was investigated. Biodegradation lines of nine organic compounds were determined as percentage removal of chemical oxygen demand (COD) over 7 days incubation. The results of the biodegradability test clearly revealed that some of the organic compounds under investigation are highly biodegradable, while others rank from fairly to even non biodegradable. Significant biodegradation results were recorded for anti coating ester (95.0%), basoplast 200D (85.3%) and basoplast PR 8050(87.6%). A bleaching agent (formamidin sulfinic acid), ukanol BSA and solidurit KM demonstrate moderate biodegradation results of 62.1%, 76.2% and 69.8%, respectively. Poor biodegradation results for Hedifix M/35 (12.7%), basazol orange (34.9%) and basazol brown (29.0%) were recorded. Accordingly, appropriate precaution should be taken into consideration when using these compounds for industrial applications.展开更多
This study describes the use of algae as potential bioindicators of pollution containing industrial metals. Phytoplanktonic algae varied with waste type and with environmental and growth conditions.In water samples co...This study describes the use of algae as potential bioindicators of pollution containing industrial metals. Phytoplanktonic algae varied with waste type and with environmental and growth conditions.In water samples containing cermic waste Euglenophyta species and Cyclotella sp. (Bacillariophyta) were determined as potential indicator species of pollution, while in sample containing metallic waste, Cyclolella sp. was most dominant. Under laboratory growth conditions, phytoplankton collected from a major stream of the Nile River were cultivated by using Algal Growth Bottle Test (EPA, 1972). This revealed that Scensdesmus sp., Actinastrum hantzschii (Chlorophyta), Oscillatoria limneica (Cyanophyta) and Nitzschia linearis (Bacilldriophyta) were also poential indicators of pollution.展开更多
The population of a neighborhood in the city of Córdoba presents general irritant symptoms since a bioethanol distillery began to operate there, from which formaldehyde, toluene, xylene mainly emanate. At the req...The population of a neighborhood in the city of Córdoba presents general irritant symptoms since a bioethanol distillery began to operate there, from which formaldehyde, toluene, xylene mainly emanate. At the request of the community, collective environmental health was evaluated with a cross-sectional study of prevalence of these conditions. 53% of the residents reported respiratory disorders, conjunctivitis 31%, headaches 27%, dermatitis 23% and dyspepsia 22%. 57% of children aged 6 - 7 use bronchodilators (an indicator of asthma). 66% of the population has one of these conditions, 46% has two and 26% has three;children are the most affected. The results coincide with the Consensus on Multiple Chemical Sensitivity Syndrome in that it is reproducible by repeated chemical exposure, is chronic and does not improve without eliminating exposure, affecting multiple organs and systems. 14.8% of newborns feature malformations, while in the rest of the city, only 1.7% did. Similar to the Sick Building Syndrome, the collective health picture found suggests a “Sick Neighborhood Syndrome”.展开更多
The purpose of this study was to examine the effects of supply chain integration on environmental performance of food manufacturing companies in Jordan. Data for this study were collected from one hundred and nineteen...The purpose of this study was to examine the effects of supply chain integration on environmental performance of food manufacturing companies in Jordan. Data for this study were collected from one hundred and nineteen food companies. To answer the study questions, and to verify its hypotheses, descriptive statistical tools and linear regression tests were used. The study results indicated that supply chain integration positively affected environmental performance. Additionally, the results showed that supply chain integration positively affected environmental control and pollution management.展开更多
Abuse of chemical fertilizer and pesticide will not only impair the quality of agricultural products,but also damage the agricultural ecological environment.From the perspective of cooperatives’socialized services,th...Abuse of chemical fertilizer and pesticide will not only impair the quality of agricultural products,but also damage the agricultural ecological environment.From the perspective of cooperatives’socialized services,this paper studies agricultural households’chemical fertilizer and pesticide use behavior,attempting to provide references for the government’s formulation of relevant policies and cooperatives’adjustment of their operation strategies.The survey data of 518 agricultural households in Zigui County and Badong County,Hubei Province,China are used to examine the influence of cooperatives and their socialized services on agricultural households’chemical fertilizer and pesticide use intensity via propensity score matching.Research reveals that:(1)Joining cooperatives has a significantly negative influence on agricultural households’chemical fertilizer and pesticide use intensity,and the average treatment effect is-341.505 yuan mu^(-1).(2)Agricultural materials supply services and technical support services can significantly bring down agricultural households’chemical fertilizer and pesticide use intensity,and the average treatment effect is-225.966 yuan mu^(-1)and-163.580 yuan mu^(-1),respectively.While the influence of agricultural products sale services on chemical fertilizer and pesticide use intensity is not significant.(3)Grouped investigation is carried out by age,education years and planting scale,and the influence of socialized services on agricultural householders’chemical fertilizer and pesticide use intensity is obviously varied among different groups.The influence of agricultural materials supply services on agricultural households who are elder,with smaller education years and small planting scale is significant;the influence of technical support services on agricultural households who are younger,with higher education years and small planting scale is significant;the influence of agricultural products sale services on agricultural households who are elder is significant.It is necessary to improve the percentage of agricultural households joining cooperatives,increase the supply level of cooperatives’socialized services,and make socialized services of cooperatives more targeted.All this can contribute to further reduction of agricultural households’chemical fertilizer and pesticide use intensity.展开更多
基金Supported by the China Agriculture Research System(CARS49)~~
文摘Environmental endocrine disrupting chemicals （EDCs）, commonly found in the environment, come from industry and agriculture, including pesticides, fungicides, insecticides, herbicides, and other chemicals. Nowadays, more and more EDCs were released into the environment. EDCs go into water body via atmosphere sedi-mentation, surface runoff, soil eluviation, etc., so water body becomes the main place for existing. In order to attract scientific and public attention worldwide and to prevent EDCs pol ution, in this study we reviewed the classification of EDCs and their concentrations in natural water bodies, drinking water sources and water plants, and the reproductive toxicity of EDCs to fish were reviewed. EDCs could disturb the endocrine system and make reproductive organs and reproduction abnor-mal, resulting in fertility descending, reproduction function damage, community quan-tity decrease and even species extinction. In addition, EDCs could disrupt the homeostasis maintained by hormones, which would result in defects of neural de-velopment and abnormalities of the endocrine and reproductive systems. The exact molecular mechanisms have not been completely reported, but researches have suggested that multiple mechanisms were involved in the action of EDCs. Although there have been researches on the biohazard of EDCs, there stil exist problems of weakness in fundamental researches, difficulties in recognizing and identifying EDCs and high cost, which restraint the knowledge on them.
文摘Addressing the problems related to the widespread presence of an increasing number of chemicals released into the environment by human activities represents one of the most important challenges of this century. In the last few years, to replace the high cost, in terms of time and money, of conventional technologies, the scientific community has directed considerable research towards the development both of new detection systems for the measurement of the contamination levels of chemicals in people's body fluids and tissue, as well as in the environment, and of new remediation strategies for the removal of such chemicals from the environment, as a means of the prevention of human diseases. New emerging biosensors for the analysis of environmental chemicals have been proposed, including VHH antibodies, that combine the antibody performance with the affinity for small molecules, genetically engineered microorganisms, aptamers and new highly stable enzymes. However, the advances in the field of chemicals monitoring are still far from producing a continuous realtime and on-line system for their detection. Better results have been obtained in the development of strategies which use organisms(microorganisms, plants and animals) or metabolic pathway-based approaches(single enzymes or more complex enzymatic solutions) for the fixation, degradation and detoxification of chemicals in the environment. Systems for enzymatic detoxification and degradation of toxic agents in wastewater from chemical and manufacturing industries, such as ligninolytic enzymes for the treatment of wastewater from the textile industry, have been proposed. Considering the high value of these research studies, in terms of the protection of human health and of the ecosystem, science must play a major role in guiding policy changes in this field.
文摘Evaluation of the elimination and the “ultimate” biodegradation by aerobic microorganisms of some organic compounds commonly used in paper manufacturing technology was investigated. Biodegradation lines of nine organic compounds were determined as percentage removal of chemical oxygen demand (COD) over 7 days incubation. The results of the biodegradability test clearly revealed that some of the organic compounds under investigation are highly biodegradable, while others rank from fairly to even non biodegradable. Significant biodegradation results were recorded for anti coating ester (95.0%), basoplast 200D (85.3%) and basoplast PR 8050(87.6%). A bleaching agent (formamidin sulfinic acid), ukanol BSA and solidurit KM demonstrate moderate biodegradation results of 62.1%, 76.2% and 69.8%, respectively. Poor biodegradation results for Hedifix M/35 (12.7%), basazol orange (34.9%) and basazol brown (29.0%) were recorded. Accordingly, appropriate precaution should be taken into consideration when using these compounds for industrial applications.
文摘This study describes the use of algae as potential bioindicators of pollution containing industrial metals. Phytoplanktonic algae varied with waste type and with environmental and growth conditions.In water samples containing cermic waste Euglenophyta species and Cyclotella sp. (Bacillariophyta) were determined as potential indicator species of pollution, while in sample containing metallic waste, Cyclolella sp. was most dominant. Under laboratory growth conditions, phytoplankton collected from a major stream of the Nile River were cultivated by using Algal Growth Bottle Test (EPA, 1972). This revealed that Scensdesmus sp., Actinastrum hantzschii (Chlorophyta), Oscillatoria limneica (Cyanophyta) and Nitzschia linearis (Bacilldriophyta) were also poential indicators of pollution.
文摘The population of a neighborhood in the city of Córdoba presents general irritant symptoms since a bioethanol distillery began to operate there, from which formaldehyde, toluene, xylene mainly emanate. At the request of the community, collective environmental health was evaluated with a cross-sectional study of prevalence of these conditions. 53% of the residents reported respiratory disorders, conjunctivitis 31%, headaches 27%, dermatitis 23% and dyspepsia 22%. 57% of children aged 6 - 7 use bronchodilators (an indicator of asthma). 66% of the population has one of these conditions, 46% has two and 26% has three;children are the most affected. The results coincide with the Consensus on Multiple Chemical Sensitivity Syndrome in that it is reproducible by repeated chemical exposure, is chronic and does not improve without eliminating exposure, affecting multiple organs and systems. 14.8% of newborns feature malformations, while in the rest of the city, only 1.7% did. Similar to the Sick Building Syndrome, the collective health picture found suggests a “Sick Neighborhood Syndrome”.
文摘The purpose of this study was to examine the effects of supply chain integration on environmental performance of food manufacturing companies in Jordan. Data for this study were collected from one hundred and nineteen food companies. To answer the study questions, and to verify its hypotheses, descriptive statistical tools and linear regression tests were used. The study results indicated that supply chain integration positively affected environmental performance. Additionally, the results showed that supply chain integration positively affected environmental control and pollution management.
基金The Australian Research Council(DP180100519)The National Natural Science Foundation of China(72004116)The Openof the Reservoir Resettlement Research Center of Hubei Province University Humanities and Social Sciences Key Research Base(2022KFJJ01)。
文摘Abuse of chemical fertilizer and pesticide will not only impair the quality of agricultural products,but also damage the agricultural ecological environment.From the perspective of cooperatives’socialized services,this paper studies agricultural households’chemical fertilizer and pesticide use behavior,attempting to provide references for the government’s formulation of relevant policies and cooperatives’adjustment of their operation strategies.The survey data of 518 agricultural households in Zigui County and Badong County,Hubei Province,China are used to examine the influence of cooperatives and their socialized services on agricultural households’chemical fertilizer and pesticide use intensity via propensity score matching.Research reveals that:(1)Joining cooperatives has a significantly negative influence on agricultural households’chemical fertilizer and pesticide use intensity,and the average treatment effect is-341.505 yuan mu^(-1).(2)Agricultural materials supply services and technical support services can significantly bring down agricultural households’chemical fertilizer and pesticide use intensity,and the average treatment effect is-225.966 yuan mu^(-1)and-163.580 yuan mu^(-1),respectively.While the influence of agricultural products sale services on chemical fertilizer and pesticide use intensity is not significant.(3)Grouped investigation is carried out by age,education years and planting scale,and the influence of socialized services on agricultural householders’chemical fertilizer and pesticide use intensity is obviously varied among different groups.The influence of agricultural materials supply services on agricultural households who are elder,with smaller education years and small planting scale is significant;the influence of technical support services on agricultural households who are younger,with higher education years and small planting scale is significant;the influence of agricultural products sale services on agricultural households who are elder is significant.It is necessary to improve the percentage of agricultural households joining cooperatives,increase the supply level of cooperatives’socialized services,and make socialized services of cooperatives more targeted.All this can contribute to further reduction of agricultural households’chemical fertilizer and pesticide use intensity.
