In connection with the current prospect of decarbonization of coal energy through the use of small nuclear power plants (SNPPs) at existing TPPs as heat sources for heat supply to municipal heating networks, there is ...In connection with the current prospect of decarbonization of coal energy through the use of small nuclear power plants (SNPPs) at existing TPPs as heat sources for heat supply to municipal heating networks, there is a technological need to improve heat supply schemes to increase their environmental friendliness and efficiency. The paper proves the feasibility of using the heat-feeding mode of ASHPs for urban heat supply by heating the network water with steam taken from the turbine. The ratio of electric and thermal power of a “nuclear” combined heat and power plant is given. The advantage of using a heat pump, which provides twice as much electrical power with the same heat output, is established. Taking into account that heat in these modes is supplied with different potential, the energy efficiency was used to compare these options. To increase the heat supply capacity, a scheme with the use of a high-pressure heater in the backpressure mode and with the heating of network water with hot steam was proposed. Heat supply from ASHPs is efficient and environmentally friendly even in the case of significant remoteness of heat consumers.展开更多
The paper formulates new principles that should form the basis for the development and creation of new environmental monitoring based on heavy UAVs and high-altitude so-called pseudo-satellites capable of operating fo...The paper formulates new principles that should form the basis for the development and creation of new environmental monitoring based on heavy UAVs and high-altitude so-called pseudo-satellites capable of operating for a long time at altitudes of 25 - 30 km. In order to develop such principles, this paper analyzes the radioecological situation in the territories of Donetsk and Luhansk regions of Ukraine for rapid and high-quality environmental cleanup and rehabilitation of areas with detected critical levels of environmentally hazardous pollutants. In order to quickly obtain fundamentally new environmental information, it is necessary to conduct multi-parameter, high-precision integrated monitoring of the Earth’s geospheres based on the latest methods and equipment for ground and remote environmental measurements, and new methods and technological means of clean, environmentally safe processing and final disposal. As the most appropriate technology, we propose mobile installations for plasma-chemical pyrolysis of medical waste directly at the place of its generation.展开更多
In this study,synthetic wastewater containing 110μg/L arsenate(As(V)),0-20 mg/L fulvic acid(FA),and 0-12.3 mg/L phosphate was treated with 3 mg/L Fe3+.The mechanisms of FA and phosphate effects on As(V)removal by fer...In this study,synthetic wastewater containing 110μg/L arsenate(As(V)),0-20 mg/L fulvic acid(FA),and 0-12.3 mg/L phosphate was treated with 3 mg/L Fe3+.The mechanisms of FA and phosphate effects on As(V)removal by ferric chloride were determined using 0.22-10μm pore-size filtration,Zetasizer analysis,and in situ flow through cell ATR-FTIR.The results showed that up to 20mg/L FA had almost no effect on the solubility of ferric hydroxide precipitates and adsorption of As(V)by the precipitates.When FA concentration increased from 0 to 20 mg/L,the adsorption of FA led to higher negative zeta potential of the precipitates and the strong electrostatic repulsion between the precipitates decreased the particle size of ferric hydroxide flocs fromlarger than 10μmto smaller than 1μm.In the presence of 5-20 mg/L FA,46%-63%As(V)was adsorbed onto the flocs with particle size in the range of 0.45-1μm.On the other hand,phosphate did not affect the size of ferric hydroxide flocs and significantly increased the dissolved As(V)concentration because it competed with As(V)for adsorption sites on ferric hydroxide precipitates.The addition of 5mg/L cationic organic flocculant significantly reduced the effect of FA on As(V)removal,but did not reduce the effect of phosphate on As(V)removal.The findings of this study will help develop effective arsenic treatment techniques and predict the mobility of arsenic in the environment.展开更多
Today, the most urgent problem of the existing and future nuclear power industry is to ensure the nuclear and environmental safety of the operation of nuclear power reactor units (NPPs) and nuclear power plants (NPPs)...Today, the most urgent problem of the existing and future nuclear power industry is to ensure the nuclear and environmental safety of the operation of nuclear power reactor units (NPPs) and nuclear power plants (NPPs). It is solved thanks to the application of deeply echeloned protection and an anti-accident complex of methods and means for effective control of the operation of active reactor zones (AZR). However, the danger of existing NPPs in the world from time to time manifests itself in the form of severe post-project accidents and catastrophes with the release into the environment of a significant amount of radioactive materials dangerous for all living things. The results of the analysis show that the unconditional fulfillment of the main requirements of nuclear environmental safety and biocompatibility is possible only in the so-called wave nuclear reactor of the G-V generation, which, unlike reactors of the previous generations III, II+ and IV, does not require supercritical loading of the core with nuclear fuel. In the active zone of this reactor, nuclear-physical processes governed by physical law are implemented, which exclude the operator’s participation in regulating the reactivity of the reactor’s active zone, which makes it the reactor with the highest level of nuclear and environmental safety today, which is based on the principles of so-called internal safety, free from the human factor. The possibility of burning nuclear fuel based on U238 and Th232 in it expands the reserves of energetic nuclear fuel almost to inexhaustibility. The technology of nuclear reactors of the G5 generation through the secondary use of spent irradiated nuclear fuel (SNF) for the production of energy and energy raw materials with simultaneous burning of it to an environmentally safe state is able to quickly reduce the available stocks and further production of dangerous SNF, guarantee the nuclear and environmental safety of NPPs with reactors G5 and to technologically make nuclear post-project accidents and disasters impossible at the level of physical law with the complete elimination of the human factor.展开更多
In the temperate zone of Europe,Scots pine forests are expected to occupy the poorest habitats which are unfavourable for deciduous trees.However,as a result of deforestation of the most fertile habitats and the prefe...In the temperate zone of Europe,Scots pine forests are expected to occupy the poorest habitats which are unfavourable for deciduous trees.However,as a result of deforestation of the most fertile habitats and the preference for Pinus sylvestris in silviculture,pine forests have become the dominant feature of the landscape in Central Europe.As a result,the area of optimal habitat for deciduous forest flora has been significantly reduced.Nevertheless,remnant patches of deciduous forest persist as habitat islands within extensive pine forest complexes and may serve as important refugia for meso-and eutrophilic forest species.However,the factors that contribute to the variation in species composition of such habitat islands and their role in maintaining biodiversity remain poorly understood.This paper aims to fill this knowledge gap.The studied deciduous(oak)stands exhibited a diverse vegetation,with species composition influenced by overstorey attributes,oak age,patch location,and the area and circularity of the deciduous forest.Species traits related to environmental variables included mainly preferences for closed or open forests,requirements for soil moisture,reaction,and fertility,and requirements for light conditions.The key message from our research is that oak islands are not simply patches of trees that are different from the surrounding area.Instead,they represent distinct plant communities that have developed to adapt to the prevailing environmental conditions by recruiting species with particular traits.The presence of oak islands within Scots pine monocultures is therefore important for increasing the diversity of the forest complex.The most relevant recommendation from our research for forest management is to maintain as many patches of deciduous tree stands as possible within a single pine forest complex,as even small habitat islands can make a significant contribution to the biodiversity of the forest complex.展开更多
This paper presents the results of the development and creation of plasma-chemical reactors for mobile and stationary installations for the destruction and disposal of solid, liquid, gaseous and mixed medical waste ba...This paper presents the results of the development and creation of plasma-chemical reactors for mobile and stationary installations for the destruction and disposal of solid, liquid, gaseous and mixed medical waste based on the domestic plasma generator PUN-1, with air as the plasma-forming gas. The design and principle of operation of plasma-chemical reactors installed on mobile experimental and industrial plants “Plazmon-1,2,3”, as well as the main features of the plasma waste disposal process are described.展开更多
This article provides an overview of the developmental trajectory and enduring impact of the Commission on Geoscience Education(COGE)under the auspices of the International Union of Geological Sciences(IUGS)from its i...This article provides an overview of the developmental trajectory and enduring impact of the Commission on Geoscience Education(COGE)under the auspices of the International Union of Geological Sciences(IUGS)from its inception in 1961 to 2024,including its formal establishment in 2004.Originally established as the Commission on Geoscience Education,Training,and Technology Transfer(COGEOTT)in 1990,COGE's evolution is explored against the backdrop of expanding global needs in geoscience education.achievements,COGE faces new and persistent challenges,such as resource constraints and adapting to diverse educational systems.展开更多
The bottom ash and fly ash from the co-combustion of wood residues and peat at a bubbling fluidised bed boiler（296 MW） contained only quartz（SiO_2）, microcline（KAl Si_3O_8） and albite（NaAlSi_3O_8）. Thus, X-ray...The bottom ash and fly ash from the co-combustion of wood residues and peat at a bubbling fluidised bed boiler（296 MW） contained only quartz（SiO_2）, microcline（KAl Si_3O_8） and albite（NaAlSi_3O_8）. Thus, X-ray powder diffraction（XRD） was not useful for clarifying the difference in the release of associated heavy metals from ash matrices. In order to assess the release of heavy metals from ashes under changing environmental conditions, they were sequentially extracted and fractionated by the BCR-procedure into acid soluble/exchangeable（CH_3COOH）, reducible（NH_2OH-HCl） and oxidizable（H_2O_2/CH_3COONH_4） phases. The CH_3 COOH extractable fraction in conjunction with the total heavy metals concentrations were used to calculate the risk assessment code values for heavy metals leaching from the ash matrix. The leaching studies indicate that the heavy metals in the bottom ash and fly ash are bound to different fractions with different strengths. From the environmental and utilization perspectives, heavy metals in ashes posed different levels of environmental contamination risk. Only As in the bottom ash posed a very high risk. High risk metals were Cd in the bottom ash as well as As, Cd and Se in the fly ash.展开更多
This paper discussed the optimization of conditions for remediation of crude oil-polluted soil based on pot experiment by applying reed-specific degrading bacteria, and using response surfaces methodology. We took the...This paper discussed the optimization of conditions for remediation of crude oil-polluted soil based on pot experiment by applying reed-specific degrading bacteria, and using response surfaces methodology. We took the initial crude oil concentration, the amount of inoculation, the ratio of nitrogen and phosphorus, and the use of surfactant （Tween-80） as independent variables （factors）, and the degrading ratio of crude oil as the dependent variable （response） after a 90-day experiment. The experiment explored the impacts of each independent variable and their interactions on the bioremediation of crude oil-polluted soil using the Box-Behnken design. Working with a simulated forecasting model the study obtained optimization va reed＋specific degrading bacteria, a nitrogen to phosphorus ues for the treatment parameters of 200 g/kg of the ratio of about 6.0. and 0.2% surfactant. Under experimental conditions, for crude oil concentrations of 10, 30 and 50 g/kg, the optimal effects of the treatments achieved 71.87%, 66.61% and 54.52% degradation of the crude oil, respectively. The results can provide a basis for the technical development of plant-microorganism combined bioremediation of crude oil-polluted soil.展开更多
Remote sensing,geographic information system and GPS(3S)technology have been well recognized as comprehensive,accurate and up-to-date information collection methods,which are increasingly adopted in biodiversity conse...Remote sensing,geographic information system and GPS(3S)technology have been well recognized as comprehensive,accurate and up-to-date information collection methods,which are increasingly adopted in biodiversity conservation.This review summarizes the application of object-oriented classification methods on biodiversity monitoring projects based on high-resolution remote sensing imagines in China.Biodiversity conservation research based on GIS technology in China is also discussed,with emphasis on the advantages of GIS analysis and modeling function.展开更多
A new double-circuit tram route planned in Warsaw(Vmax=70.0 km/h),running through the Praga Po?udnie district from Waszyngton Avenue(Washington Avenue)to Goc?aw loop(total length of about 3.5 km),is designed to reduce...A new double-circuit tram route planned in Warsaw(Vmax=70.0 km/h),running through the Praga Po?udnie district from Waszyngton Avenue(Washington Avenue)to Goc?aw loop(total length of about 3.5 km),is designed to reduce the existing road load in this area of the access routes from outside Warsaw to the center of the capital,as well as to improve the conditions of transport service in the areas of Saska K?pa,Mi?dzynarodowa housing estate,Kepa Goclawska and Goclaw,thereby increasing the use of public transport in Warsaw.This paper concerns the first part of the planned investment—a new tram route on the section between Waszyngton Av.(Washington Avenue)and Stanów Zjednoczonych Av.(United States of America Avenue)in Warsaw,along the historical Exhibition Channel in its immediate vicinity(Saska Kepa).Specialists-constructors(Tramwaje Warszawskie Llc.)cooperated with landscape architects(Landscape Architecture Department,Warsaw University of Life Sciences—SGGW),in accordance with contemporary canons of sustainable urban development.They aimed at restoring proper proportions in the use of the area,taking into account functional aspects(optimal communication and various forms of recreation),natural aspects(preserving valuable vegetation and enriching resources),landscape aspects(“recovering”water as the main element of space)and reconstructing connections with adjacent areas(residential areas and allotments).展开更多
Taking Beijing–Shanghai High-speed Railway(the section of Zhenjiangnan Station) for example,this paper applied UAV remote sensing data and GIS spatial analysis to analyze current land use types in this section,on thi...Taking Beijing–Shanghai High-speed Railway(the section of Zhenjiangnan Station) for example,this paper applied UAV remote sensing data and GIS spatial analysis to analyze current land use types in this section,on this basis used landscape pattern indices that showed high correlation with land use changes for the quantitative analysis and evaluation of ecosystem structure in the study area and also landscape pattern after the construction of high-speed railway.The results showed that UAV images performed well in the evaluation of railway landscape ecological environment,landscape structure and features represented by the selected landscape pattern indices in this paper were applicable,and capable of ensuring scientific evaluation of ecological environmental impact;the overall landscape pattern of the Zhenjiangnan Station section(Beijing–Shanghai High-speed Railway) after completion was moderate,and local ecosystem was damaged,thus scientific and reasonable ecological planning was required to design and change landscape structure.展开更多
Geology is perhaps the most fascinating of the natural sciences, due to its all-encompassing nature. Virtually all human activities that occur on planet Earth--including agriculture, energy and mineral resource explor...Geology is perhaps the most fascinating of the natural sciences, due to its all-encompassing nature. Virtually all human activities that occur on planet Earth--including agriculture, energy and mineral resource exploration and extraction; environmental and public policy on natural resources management and protection; land use planning; infrastructure development; and ecological tourism--all depend on various aspects of geology and its sub-disciplines. Due to the importance of geology in the daily lives of human beings, it is imperative that all persons develop at least a basic understanding of the science. In this paper, the current efforts for promoting public understanding in geology will be examined, with offerings of alternatives and supplements to these efforts. Information from the science education sub-disciplines of HPS （history, philosophy and sociology） of science, and informal/free-choice learning will be woven into the framework of the geology-public understanding idea.展开更多
The aim of the study was landscape evaluation of municipalities located in Ciezkowice-Roznow regional park in the southern part of Poland. The methodology includes field and indoor studies. Plant communities, natural ...The aim of the study was landscape evaluation of municipalities located in Ciezkowice-Roznow regional park in the southern part of Poland. The methodology includes field and indoor studies. Plant communities, natural 2,000 habitats, protected areas, and cultural elements have been identified. The study area has been divided into study units/plots. The next stage of research was the evaluation of landscape elements on every study unit. It distinguished areas with very high, high and moderate landscape values： Directions for shaping the landscape were formulated in the final part of the study.展开更多
DD （Dust deposition） was monitored over a 6-month period （April to September, 2011） at four sites located in villages near CADDⅡ（coal ash disposal site Divkovici Ⅱ）, one inside recultivated CADDⅠ （coal ash d...DD （Dust deposition） was monitored over a 6-month period （April to September, 2011） at four sites located in villages near CADDⅡ（coal ash disposal site Divkovici Ⅱ）, one inside recultivated CADDⅠ （coal ash disposal site Divkovici Ⅰ） and at one in the middle of forest barrier as control site. The main aim of this paper is to perform monitoring of air dust pollution in the area by measuring of dust deposition, different metals associated with it, and probable adverse effects on human health. Concentrations of metals were measured by using Perkin-Elmer model Inductively Coupled Plasma and statistically evaluated with SPSS 17.0 statistical program. There was a correlation between some metals （Mn, Mo and Pb） and DD distribution. The daily limit values for concentration of DD proposed by national ＂Regulations on air quality＂ （200 mg/m^2d average annual value and 350 mg/m^2d high value） exceed at three measuring sites. The average maximum content of DD was 684.8 mg/m^2d downwind of CADDII, and the average minimum was 46.8 mg/m^2d at measuring site F. Concentrations of pollutants hazardous to the environment as Ni, Cr, Cu, Mo, Mn and Pb vary from one site to another.展开更多
Many studies have demonstrated that some of the activities of people can disturb nesting and foraging birds, particularly along coasts and estuaries. Some managers respond to human disturbance of sensitive species by ...Many studies have demonstrated that some of the activities of people can disturb nesting and foraging birds, particularly along coasts and estuaries. Some managers respond to human disturbance of sensitive species by closing beaches, but most have stewards monitor and restrict access to beaches or portions of beaches. Yet little is known about the type of visitor or their perceptions of beach stewards. This paper explores the general acceptance of beach stewards and their role in conservation of red knots </span><span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">Calidris</span></i> <i><span style="font-family:Verdana;">canutus</span></i> <i><span style="font-family:Verdana;">rufa</span></i><span style="font-family:Verdana;">),</span></span><span style="font-family:Verdana;"> other shorebirds, and horseshoe crabs </span><span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">Limulus</span></i> <i><span style="font-family:Verdana;">polyphemus</span></i><span style="font-family:Verdana;">) </span></span><span style="font-family:Verdana;">along the Delaware Bay (New Jersey) beaches by interviewing 279 visitors during the stopover period. While most people came to see the shorebird and horseshoe crab spectacle (60%), many came for the scenery, tranquility, and recreation. Just over half of the people interviewed said that the stewards were helpful (58%), although most of those that answered this question later said that they provided conservation value (86%), but only 40% said they relied on the stewards for information. On a Likert rating scale of 1 to 5 (the highest value), the mean rating for whether it was important for stewards to be present was 3.87 ± 0.09, and the rating for the presence of stewards who can provide information was 3.71 ± 0.11. In contrast, protection of shorebirds was rated a mean of 4.79 ± 0.04. There were significant visitor type differences in how important stewards were, but not in the importance of stewards who can provide information. Fishermen, recreationists, and people coming for scenery and tranquility rated the presence of stewards higher than those visitors who were interested in either shorebirds or crabs (or both). Ratings also differed significantly as a function of age and gender;older adults and females rated characteristics higher than did people under 30 years and males. Information needs identified by stewards are also discussed. These data can be used by the managers developing a strategy for conservation of shorebirds and other species sensitive to disturbance, and for the implementation of an effective stewardship program.展开更多
Environmental assessment of impacts, management, and policy are important aspects of protection of human health and the environment. Assessing the impacts of human activities requires selection of bioindicator species...Environmental assessment of impacts, management, and policy are important aspects of protection of human health and the environment. Assessing the impacts of human activities requires selection of bioindicator species that can be used to assess, manage, and develop public policies that ensure ecosystem integrity, and therefore sustainability of social, cultural, and economic systems. With the use of Chinook Salmon (Oncorhynchus tshawytscha), Pacific Cod (Gadusmacrocephalus), Mallard (Anas platyrhynchos), and Red Knot (Calidris canutus rufa), we explore assessment and measurement endpoints, and their relationship to management and development of public policy. This combination of fish and birds provides a diversity of life histories, ecosystem roles, human values, and resource use to explore their use as bioindicators and endpoints. It also allows examination of 1) conservation and protection of species and biodiversity, 2) protection of ecosystems, 3) provision of goods and services, and 4) societal well-being.展开更多
New results of two computer experiments on modeling of superthermal neutron-nuclear combustion of natural uranium for two different flux densities of external neutron source and duration of half a year each are presen...New results of two computer experiments on modeling of superthermal neutron-nuclear combustion of natural uranium for two different flux densities of external neutron source and duration of half a year each are presented. The simulation results demonstrate the dependence of the autowave combustion modes on the parameters of the external source.展开更多
This research aim to evaluate hydro-meteorological data from the Yamuna River Basin,Uttarakhand,India,utilizing Extreme Value Distribution of Frequency Analysis and the Markov Chain Approach.This method assesses persi...This research aim to evaluate hydro-meteorological data from the Yamuna River Basin,Uttarakhand,India,utilizing Extreme Value Distribution of Frequency Analysis and the Markov Chain Approach.This method assesses persistence and allows for combinatorial probability estimations such as initial and transitional probabilities.The hydrologic data was generated(in-situ)and received from Uttarakhand Jal Vidut Nigam Limited(UJVNL),and meteorological data was acquired from NASA’s archives MERRA-2 product.A total of sixteen years(2005-2020)of data was used to foresee daily Precipitation from 2020 to 2022.MERRA-2 products are utilized as observed and forecast values for daily Precipitation throughout the monsoon season,which runs from July to September.Markov Chain and Long Short-Term Memory(LSTM)findings for 2020,2021,and 2022 were observed,and anticipated values for daily rainfall during the monsoon season between July and September.According to test findings,the artificial intelligence technique cannot anticipate future regional meteorological formations;the correlation coefficient R^(2) is around 0.12.According to the randomly verified precipitation data findings,the Markov Chain model has a success rate of 79.17 percent.The results suggest that extended return periods should be a warning sign for drought and flood risk in the Himalayan region.This study gives a better knowledge of the water budget,climate change variability,and impact of global warming,ultimately leading to improved water resource management and better emergency planning to the establishment of the Early Warning System(EWS)for extreme occurrences such as cloudbursts,flash floods,landslides hazards in the complex Himalayan region.展开更多
文摘In connection with the current prospect of decarbonization of coal energy through the use of small nuclear power plants (SNPPs) at existing TPPs as heat sources for heat supply to municipal heating networks, there is a technological need to improve heat supply schemes to increase their environmental friendliness and efficiency. The paper proves the feasibility of using the heat-feeding mode of ASHPs for urban heat supply by heating the network water with steam taken from the turbine. The ratio of electric and thermal power of a “nuclear” combined heat and power plant is given. The advantage of using a heat pump, which provides twice as much electrical power with the same heat output, is established. Taking into account that heat in these modes is supplied with different potential, the energy efficiency was used to compare these options. To increase the heat supply capacity, a scheme with the use of a high-pressure heater in the backpressure mode and with the heating of network water with hot steam was proposed. Heat supply from ASHPs is efficient and environmentally friendly even in the case of significant remoteness of heat consumers.
文摘The paper formulates new principles that should form the basis for the development and creation of new environmental monitoring based on heavy UAVs and high-altitude so-called pseudo-satellites capable of operating for a long time at altitudes of 25 - 30 km. In order to develop such principles, this paper analyzes the radioecological situation in the territories of Donetsk and Luhansk regions of Ukraine for rapid and high-quality environmental cleanup and rehabilitation of areas with detected critical levels of environmentally hazardous pollutants. In order to quickly obtain fundamentally new environmental information, it is necessary to conduct multi-parameter, high-precision integrated monitoring of the Earth’s geospheres based on the latest methods and equipment for ground and remote environmental measurements, and new methods and technological means of clean, environmentally safe processing and final disposal. As the most appropriate technology, we propose mobile installations for plasma-chemical pyrolysis of medical waste directly at the place of its generation.
基金financially supported by the New Jersey Department of Environmental ProtectionUS EPA。
文摘In this study,synthetic wastewater containing 110μg/L arsenate(As(V)),0-20 mg/L fulvic acid(FA),and 0-12.3 mg/L phosphate was treated with 3 mg/L Fe3+.The mechanisms of FA and phosphate effects on As(V)removal by ferric chloride were determined using 0.22-10μm pore-size filtration,Zetasizer analysis,and in situ flow through cell ATR-FTIR.The results showed that up to 20mg/L FA had almost no effect on the solubility of ferric hydroxide precipitates and adsorption of As(V)by the precipitates.When FA concentration increased from 0 to 20 mg/L,the adsorption of FA led to higher negative zeta potential of the precipitates and the strong electrostatic repulsion between the precipitates decreased the particle size of ferric hydroxide flocs fromlarger than 10μmto smaller than 1μm.In the presence of 5-20 mg/L FA,46%-63%As(V)was adsorbed onto the flocs with particle size in the range of 0.45-1μm.On the other hand,phosphate did not affect the size of ferric hydroxide flocs and significantly increased the dissolved As(V)concentration because it competed with As(V)for adsorption sites on ferric hydroxide precipitates.The addition of 5mg/L cationic organic flocculant significantly reduced the effect of FA on As(V)removal,but did not reduce the effect of phosphate on As(V)removal.The findings of this study will help develop effective arsenic treatment techniques and predict the mobility of arsenic in the environment.
文摘Today, the most urgent problem of the existing and future nuclear power industry is to ensure the nuclear and environmental safety of the operation of nuclear power reactor units (NPPs) and nuclear power plants (NPPs). It is solved thanks to the application of deeply echeloned protection and an anti-accident complex of methods and means for effective control of the operation of active reactor zones (AZR). However, the danger of existing NPPs in the world from time to time manifests itself in the form of severe post-project accidents and catastrophes with the release into the environment of a significant amount of radioactive materials dangerous for all living things. The results of the analysis show that the unconditional fulfillment of the main requirements of nuclear environmental safety and biocompatibility is possible only in the so-called wave nuclear reactor of the G-V generation, which, unlike reactors of the previous generations III, II+ and IV, does not require supercritical loading of the core with nuclear fuel. In the active zone of this reactor, nuclear-physical processes governed by physical law are implemented, which exclude the operator’s participation in regulating the reactivity of the reactor’s active zone, which makes it the reactor with the highest level of nuclear and environmental safety today, which is based on the principles of so-called internal safety, free from the human factor. The possibility of burning nuclear fuel based on U238 and Th232 in it expands the reserves of energetic nuclear fuel almost to inexhaustibility. The technology of nuclear reactors of the G5 generation through the secondary use of spent irradiated nuclear fuel (SNF) for the production of energy and energy raw materials with simultaneous burning of it to an environmentally safe state is able to quickly reduce the available stocks and further production of dangerous SNF, guarantee the nuclear and environmental safety of NPPs with reactors G5 and to technologically make nuclear post-project accidents and disasters impossible at the level of physical law with the complete elimination of the human factor.
基金The research was carried out as the Miniatura 3 project entitled Importance of old oak forest patches for the diversity of managed pine forests(2019/03/X/NZ8/00586:Znaczenie wysp starodrzewow dębo wych dla roznorodnosci gospodarczych borow sosnowych)funded by the National Science Centre Poland(Narodowe Centrum Nauki).
文摘In the temperate zone of Europe,Scots pine forests are expected to occupy the poorest habitats which are unfavourable for deciduous trees.However,as a result of deforestation of the most fertile habitats and the preference for Pinus sylvestris in silviculture,pine forests have become the dominant feature of the landscape in Central Europe.As a result,the area of optimal habitat for deciduous forest flora has been significantly reduced.Nevertheless,remnant patches of deciduous forest persist as habitat islands within extensive pine forest complexes and may serve as important refugia for meso-and eutrophilic forest species.However,the factors that contribute to the variation in species composition of such habitat islands and their role in maintaining biodiversity remain poorly understood.This paper aims to fill this knowledge gap.The studied deciduous(oak)stands exhibited a diverse vegetation,with species composition influenced by overstorey attributes,oak age,patch location,and the area and circularity of the deciduous forest.Species traits related to environmental variables included mainly preferences for closed or open forests,requirements for soil moisture,reaction,and fertility,and requirements for light conditions.The key message from our research is that oak islands are not simply patches of trees that are different from the surrounding area.Instead,they represent distinct plant communities that have developed to adapt to the prevailing environmental conditions by recruiting species with particular traits.The presence of oak islands within Scots pine monocultures is therefore important for increasing the diversity of the forest complex.The most relevant recommendation from our research for forest management is to maintain as many patches of deciduous tree stands as possible within a single pine forest complex,as even small habitat islands can make a significant contribution to the biodiversity of the forest complex.
文摘This paper presents the results of the development and creation of plasma-chemical reactors for mobile and stationary installations for the destruction and disposal of solid, liquid, gaseous and mixed medical waste based on the domestic plasma generator PUN-1, with air as the plasma-forming gas. The design and principle of operation of plasma-chemical reactors installed on mobile experimental and industrial plants “Plazmon-1,2,3”, as well as the main features of the plasma waste disposal process are described.
文摘This article provides an overview of the developmental trajectory and enduring impact of the Commission on Geoscience Education(COGE)under the auspices of the International Union of Geological Sciences(IUGS)from its inception in 1961 to 2024,including its formal establishment in 2004.Originally established as the Commission on Geoscience Education,Training,and Technology Transfer(COGEOTT)in 1990,COGE's evolution is explored against the backdrop of expanding global needs in geoscience education.achievements,COGE faces new and persistent challenges,such as resource constraints and adapting to diverse educational systems.
文摘The bottom ash and fly ash from the co-combustion of wood residues and peat at a bubbling fluidised bed boiler（296 MW） contained only quartz（SiO_2）, microcline（KAl Si_3O_8） and albite（NaAlSi_3O_8）. Thus, X-ray powder diffraction（XRD） was not useful for clarifying the difference in the release of associated heavy metals from ash matrices. In order to assess the release of heavy metals from ashes under changing environmental conditions, they were sequentially extracted and fractionated by the BCR-procedure into acid soluble/exchangeable（CH_3COOH）, reducible（NH_2OH-HCl） and oxidizable（H_2O_2/CH_3COONH_4） phases. The CH_3 COOH extractable fraction in conjunction with the total heavy metals concentrations were used to calculate the risk assessment code values for heavy metals leaching from the ash matrix. The leaching studies indicate that the heavy metals in the bottom ash and fly ash are bound to different fractions with different strengths. From the environmental and utilization perspectives, heavy metals in ashes posed different levels of environmental contamination risk. Only As in the bottom ash posed a very high risk. High risk metals were Cd in the bottom ash as well as As, Cd and Se in the fly ash.
基金supported by the Specialized Research Fund for the Basic Scientific Research of Higher Education of China (27R1204018A)
文摘This paper discussed the optimization of conditions for remediation of crude oil-polluted soil based on pot experiment by applying reed-specific degrading bacteria, and using response surfaces methodology. We took the initial crude oil concentration, the amount of inoculation, the ratio of nitrogen and phosphorus, and the use of surfactant （Tween-80） as independent variables （factors）, and the degrading ratio of crude oil as the dependent variable （response） after a 90-day experiment. The experiment explored the impacts of each independent variable and their interactions on the bioremediation of crude oil-polluted soil using the Box-Behnken design. Working with a simulated forecasting model the study obtained optimization va reed＋specific degrading bacteria, a nitrogen to phosphorus ues for the treatment parameters of 200 g/kg of the ratio of about 6.0. and 0.2% surfactant. Under experimental conditions, for crude oil concentrations of 10, 30 and 50 g/kg, the optimal effects of the treatments achieved 71.87%, 66.61% and 54.52% degradation of the crude oil, respectively. The results can provide a basis for the technical development of plant-microorganism combined bioremediation of crude oil-polluted soil.
文摘Remote sensing,geographic information system and GPS(3S)technology have been well recognized as comprehensive,accurate and up-to-date information collection methods,which are increasingly adopted in biodiversity conservation.This review summarizes the application of object-oriented classification methods on biodiversity monitoring projects based on high-resolution remote sensing imagines in China.Biodiversity conservation research based on GIS technology in China is also discussed,with emphasis on the advantages of GIS analysis and modeling function.
文摘A new double-circuit tram route planned in Warsaw(Vmax=70.0 km/h),running through the Praga Po?udnie district from Waszyngton Avenue(Washington Avenue)to Goc?aw loop(total length of about 3.5 km),is designed to reduce the existing road load in this area of the access routes from outside Warsaw to the center of the capital,as well as to improve the conditions of transport service in the areas of Saska K?pa,Mi?dzynarodowa housing estate,Kepa Goclawska and Goclaw,thereby increasing the use of public transport in Warsaw.This paper concerns the first part of the planned investment—a new tram route on the section between Waszyngton Av.(Washington Avenue)and Stanów Zjednoczonych Av.(United States of America Avenue)in Warsaw,along the historical Exhibition Channel in its immediate vicinity(Saska Kepa).Specialists-constructors(Tramwaje Warszawskie Llc.)cooperated with landscape architects(Landscape Architecture Department,Warsaw University of Life Sciences—SGGW),in accordance with contemporary canons of sustainable urban development.They aimed at restoring proper proportions in the use of the area,taking into account functional aspects(optimal communication and various forms of recreation),natural aspects(preserving valuable vegetation and enriching resources),landscape aspects(“recovering”water as the main element of space)and reconstructing connections with adjacent areas(residential areas and allotments).
基金Sponsored by Environmental Protection Fund of China-"123 Project"of Liaoning Environmental Scientific Research&Education(CEPF2010-123-2-10)
文摘Taking Beijing–Shanghai High-speed Railway(the section of Zhenjiangnan Station) for example,this paper applied UAV remote sensing data and GIS spatial analysis to analyze current land use types in this section,on this basis used landscape pattern indices that showed high correlation with land use changes for the quantitative analysis and evaluation of ecosystem structure in the study area and also landscape pattern after the construction of high-speed railway.The results showed that UAV images performed well in the evaluation of railway landscape ecological environment,landscape structure and features represented by the selected landscape pattern indices in this paper were applicable,and capable of ensuring scientific evaluation of ecological environmental impact;the overall landscape pattern of the Zhenjiangnan Station section(Beijing–Shanghai High-speed Railway) after completion was moderate,and local ecosystem was damaged,thus scientific and reasonable ecological planning was required to design and change landscape structure.
文摘Geology is perhaps the most fascinating of the natural sciences, due to its all-encompassing nature. Virtually all human activities that occur on planet Earth--including agriculture, energy and mineral resource exploration and extraction; environmental and public policy on natural resources management and protection; land use planning; infrastructure development; and ecological tourism--all depend on various aspects of geology and its sub-disciplines. Due to the importance of geology in the daily lives of human beings, it is imperative that all persons develop at least a basic understanding of the science. In this paper, the current efforts for promoting public understanding in geology will be examined, with offerings of alternatives and supplements to these efforts. Information from the science education sub-disciplines of HPS （history, philosophy and sociology） of science, and informal/free-choice learning will be woven into the framework of the geology-public understanding idea.
文摘The aim of the study was landscape evaluation of municipalities located in Ciezkowice-Roznow regional park in the southern part of Poland. The methodology includes field and indoor studies. Plant communities, natural 2,000 habitats, protected areas, and cultural elements have been identified. The study area has been divided into study units/plots. The next stage of research was the evaluation of landscape elements on every study unit. It distinguished areas with very high, high and moderate landscape values： Directions for shaping the landscape were formulated in the final part of the study.
文摘DD （Dust deposition） was monitored over a 6-month period （April to September, 2011） at four sites located in villages near CADDⅡ（coal ash disposal site Divkovici Ⅱ）, one inside recultivated CADDⅠ （coal ash disposal site Divkovici Ⅰ） and at one in the middle of forest barrier as control site. The main aim of this paper is to perform monitoring of air dust pollution in the area by measuring of dust deposition, different metals associated with it, and probable adverse effects on human health. Concentrations of metals were measured by using Perkin-Elmer model Inductively Coupled Plasma and statistically evaluated with SPSS 17.0 statistical program. There was a correlation between some metals （Mn, Mo and Pb） and DD distribution. The daily limit values for concentration of DD proposed by national ＂Regulations on air quality＂ （200 mg/m^2d average annual value and 350 mg/m^2d high value） exceed at three measuring sites. The average maximum content of DD was 684.8 mg/m^2d downwind of CADDII, and the average minimum was 46.8 mg/m^2d at measuring site F. Concentrations of pollutants hazardous to the environment as Ni, Cr, Cu, Mo, Mn and Pb vary from one site to another.
文摘Many studies have demonstrated that some of the activities of people can disturb nesting and foraging birds, particularly along coasts and estuaries. Some managers respond to human disturbance of sensitive species by closing beaches, but most have stewards monitor and restrict access to beaches or portions of beaches. Yet little is known about the type of visitor or their perceptions of beach stewards. This paper explores the general acceptance of beach stewards and their role in conservation of red knots </span><span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">Calidris</span></i> <i><span style="font-family:Verdana;">canutus</span></i> <i><span style="font-family:Verdana;">rufa</span></i><span style="font-family:Verdana;">),</span></span><span style="font-family:Verdana;"> other shorebirds, and horseshoe crabs </span><span><span style="font-family:Verdana;">(</span><i><span style="font-family:Verdana;">Limulus</span></i> <i><span style="font-family:Verdana;">polyphemus</span></i><span style="font-family:Verdana;">) </span></span><span style="font-family:Verdana;">along the Delaware Bay (New Jersey) beaches by interviewing 279 visitors during the stopover period. While most people came to see the shorebird and horseshoe crab spectacle (60%), many came for the scenery, tranquility, and recreation. Just over half of the people interviewed said that the stewards were helpful (58%), although most of those that answered this question later said that they provided conservation value (86%), but only 40% said they relied on the stewards for information. On a Likert rating scale of 1 to 5 (the highest value), the mean rating for whether it was important for stewards to be present was 3.87 ± 0.09, and the rating for the presence of stewards who can provide information was 3.71 ± 0.11. In contrast, protection of shorebirds was rated a mean of 4.79 ± 0.04. There were significant visitor type differences in how important stewards were, but not in the importance of stewards who can provide information. Fishermen, recreationists, and people coming for scenery and tranquility rated the presence of stewards higher than those visitors who were interested in either shorebirds or crabs (or both). Ratings also differed significantly as a function of age and gender;older adults and females rated characteristics higher than did people under 30 years and males. Information needs identified by stewards are also discussed. These data can be used by the managers developing a strategy for conservation of shorebirds and other species sensitive to disturbance, and for the implementation of an effective stewardship program.
文摘Environmental assessment of impacts, management, and policy are important aspects of protection of human health and the environment. Assessing the impacts of human activities requires selection of bioindicator species that can be used to assess, manage, and develop public policies that ensure ecosystem integrity, and therefore sustainability of social, cultural, and economic systems. With the use of Chinook Salmon (Oncorhynchus tshawytscha), Pacific Cod (Gadusmacrocephalus), Mallard (Anas platyrhynchos), and Red Knot (Calidris canutus rufa), we explore assessment and measurement endpoints, and their relationship to management and development of public policy. This combination of fish and birds provides a diversity of life histories, ecosystem roles, human values, and resource use to explore their use as bioindicators and endpoints. It also allows examination of 1) conservation and protection of species and biodiversity, 2) protection of ecosystems, 3) provision of goods and services, and 4) societal well-being.
文摘New results of two computer experiments on modeling of superthermal neutron-nuclear combustion of natural uranium for two different flux densities of external neutron source and duration of half a year each are presented. The simulation results demonstrate the dependence of the autowave combustion modes on the parameters of the external source.
基金This research work was carried out during the SERB,SIRE fellowship (File No.SIR/2022/000972)tenure at Keio University,Japan.
文摘This research aim to evaluate hydro-meteorological data from the Yamuna River Basin,Uttarakhand,India,utilizing Extreme Value Distribution of Frequency Analysis and the Markov Chain Approach.This method assesses persistence and allows for combinatorial probability estimations such as initial and transitional probabilities.The hydrologic data was generated(in-situ)and received from Uttarakhand Jal Vidut Nigam Limited(UJVNL),and meteorological data was acquired from NASA’s archives MERRA-2 product.A total of sixteen years(2005-2020)of data was used to foresee daily Precipitation from 2020 to 2022.MERRA-2 products are utilized as observed and forecast values for daily Precipitation throughout the monsoon season,which runs from July to September.Markov Chain and Long Short-Term Memory(LSTM)findings for 2020,2021,and 2022 were observed,and anticipated values for daily rainfall during the monsoon season between July and September.According to test findings,the artificial intelligence technique cannot anticipate future regional meteorological formations;the correlation coefficient R^(2) is around 0.12.According to the randomly verified precipitation data findings,the Markov Chain model has a success rate of 79.17 percent.The results suggest that extended return periods should be a warning sign for drought and flood risk in the Himalayan region.This study gives a better knowledge of the water budget,climate change variability,and impact of global warming,ultimately leading to improved water resource management and better emergency planning to the establishment of the Early Warning System(EWS)for extreme occurrences such as cloudbursts,flash floods,landslides hazards in the complex Himalayan region.
