Application of Isotopic Technology in Aqueous Environment

2011 ◽  
Vol 356-360 ◽  
pp. 2325-2328
Author(s):  
Hai Ying Hu

The aqueous environment quality plays an important role in controlling the circulation track of ecological environment. Environmental isotopes widely exist in various kinds of water and can be extensively applied in water environment. Isotopes as natural tracers can be used to trace the transportation process of water in hydrologic cycle and the variations of isotopic value can also provide the information about the transference of contamination. The dynamical process of the movement and mix of waters can be studied by applying the composition characteristics of stable isotopes contained in natural waters, thus the main processes of water resources formation and aqueous environment evolution as well as their driving forces mechanism can be revealed. In this paper, the development history of the application of stable isotopes in the water circulation is reviewed, the application theory and analytical method of the environmental stable isotopes, and the new progress of the applied study on water resources formation and aqueous environment evolution are mainly discussed.

2018 ◽  
Author(s):  
Olena Mitryasova ◽  
Volodymyr Pohrebennyk

Background. Small rivers are an important component of the natural environment. Water resources of small rivers are part of the shared water resources and are often the main and sometimes the only one source of local water. Small rivers are the regulators of the water regime of the landscapes, the factors for maintaining balance and redistribution of moisture. The aim is analysis of interaction between parameters of the quality of the water environment like conductivity and nitrates on the example of natural waters of small rivers. Objects are small rivers Bìst and Rosselle (Saardand lands, Germany) and Mertvovod (Mykolaiv region, Ukraine). Methods. We used the method of correlative analysis which is effective and efficient for the determination of connections between the parameters of water quality that helps to identify sources of pollution, as well as interpret phenomena, forecast the situation related to the change in the quality of natural waters. The hydrochemical monitoring data were obtained from autonomous automated stations that are located on the rivers Bist, Rossel and Mertvovod. We investigated the following correlation dependencies between such combinations of natural waters quality parameters: nitrates and conductivity. Monitoring data are processed using software MS Excel; correlation dependence was defined using the CORREL. Results. Correlation value is changed in the range from −1 to + 1 that demonstrates the indirect and direct dependence between the selected parameters. If the value is closer to +1, this means the presence of a strong connection, if closer to 0 – weak. The time periods for the calculation of the correlation between the parameters of natural waters quality is selected: 4, 8, 16 and 24 hours respectively. The following time periods allow the best to trace and predict changes in the natural aquatic environment. Correlation analysis of the concentration of nitrates and conductivity showed that for r. Bìst and r. Rosselle dominates is the positive value of the correlation between the study parameters, which proves their strong interaction. However, at certain concentrations of nitrate-ions observed custom phenomenon of sharp decrease in correlation to the «-1», which is explained by the Onsager equation, namely an excess concentration of nitrates is associated with erosion of different types of fertilizers from the fields as a result of rainfall. Discussion. Trend analysis of the studied indicators of Mertvovod water quality was conducted on an average value of each indicator (pH, phosphates, nitrates, BOD, soluble oxygen). We used trend analysis for Mertvovod because we did not have enough data in time. Found a significant increase in phosphates with time. This can be explained by the arrival of various surface active substances and, to a lesser extent, the lack of quality sewage treatment facilities. Positive changes are founded in water object that is related to a decrease in the value of BOD.


2018 ◽  
Author(s):  
Olena Mitryasova ◽  
Volodymyr Pohrebennyk

Background. Small rivers are an important component of the natural environment. Water resources of small rivers are part of the shared water resources and are often the main and sometimes the only one source of local water. Small rivers are the regulators of the water regime of the landscapes, the factors for maintaining balance and redistribution of moisture. The aim is analysis of interaction between parameters of the quality of the water environment like conductivity and nitrates on the example of natural waters of small rivers. Objects are small rivers Bìst and Rosselle (Saardand lands, Germany) and Mertvovod (Mykolaiv region, Ukraine). Methods. We used the method of correlative analysis which is effective and efficient for the determination of connections between the parameters of water quality that helps to identify sources of pollution, as well as interpret phenomena, forecast the situation related to the change in the quality of natural waters. The hydrochemical monitoring data were obtained from autonomous automated stations that are located on the rivers Bist, Rossel and Mertvovod. We investigated the following correlation dependencies between such combinations of natural waters quality parameters: nitrates and conductivity. Monitoring data are processed using software MS Excel; correlation dependence was defined using the CORREL. Results. Correlation value is changed in the range from −1 to + 1 that demonstrates the indirect and direct dependence between the selected parameters. If the value is closer to +1, this means the presence of a strong connection, if closer to 0 – weak. The time periods for the calculation of the correlation between the parameters of natural waters quality is selected: 4, 8, 16 and 24 hours respectively. The following time periods allow the best to trace and predict changes in the natural aquatic environment. Correlation analysis of the concentration of nitrates and conductivity showed that for r. Bìst and r. Rosselle dominates is the positive value of the correlation between the study parameters, which proves their strong interaction. However, at certain concentrations of nitrate-ions observed custom phenomenon of sharp decrease in correlation to the «-1», which is explained by the Onsager equation, namely an excess concentration of nitrates is associated with erosion of different types of fertilizers from the fields as a result of rainfall. Discussion. Trend analysis of the studied indicators of Mertvovod water quality was conducted on an average value of each indicator (pH, phosphates, nitrates, BOD, soluble oxygen). We used trend analysis for Mertvovod because we did not have enough data in time. Found a significant increase in phosphates with time. This can be explained by the arrival of various surface active substances and, to a lesser extent, the lack of quality sewage treatment facilities. Positive changes are founded in water object that is related to a decrease in the value of BOD.


This paper analyzes Foucault’s early thinking (from 1954 to 1957) as it bears on psychology, anthropology and psychiatry. The author maintains that Foucault’s texts from that period can be mined for the origins of the Foucault methodology, early indications of its scope, and its first applications. Although Foucault opposed a phenomenology of epistemology and allied himself with the latter, a close reading of his early work reveals a paradoxical synthesis of phenomenological and epistemological views. The influences of Georges Canguilhem, Maurice Merleau-Ponty, and Ludwig Binswanger were decisive here.Foucault adopted the “practice-to-theory” vector from Canguilhem and grounded the history of psychology and psychiatry on the study of essential oppositions: normal - pathological, personality - environment, evolution - history. Merleau-Ponty’s theory allowed him to demonstrate that the ontological perspective of psychology and psychiatry does not match the subject of their research, which is the person and their experience. Foucault’s application of Binswanger and the idea of existence is to problematize the boundaries between psychology and psychiatry and their identity as sciences while formulating the problem of pathology and normality as crucial to their identification. He also considers mental illness as one of the forms of experience. Foucault thus goes beyond the boundaries of psychology and psychiatry to develop his archaeological method. In the Order of things and the Archaeology of Knowledge he makes two philosophical maneuvers: in the first, he rejects the subject; in the second he abandons the continuity of history. Foucault’s early psychological and psychiatric discourse is then the first harbinger of his trespassing the boundaries of disciplines and schools, combining perspectives, and scrutinizing the foundations of scientific practice. A critical dialogue with his own earlier thought is the source of Foucault’s birth as a philosopher.


Author(s):  
Ausma Cimdiņa

The novel “Magnus, the Danish Prince” by the Russian diaspora in Latvia writer Roald Dobrovensky is seen as a specific example of a biographical and historical genre, which embodies the historical experience of different eras and nations in the confrontation of globalisation and national self-determination. At the heart of the novel are the Livonian War and the historical role and human destiny of Magnus (1540–1683) – the Danish prince of the Oldenburg dynasty, the first and the only king of Livonia. The motif of Riga’s humanists is seen both as one of the main ideological driving forces of the novel and as a marginal reflection in Magnus’s life story. Acknowledged historical sources have been used in the creation of the novel: Baltazar Rusov’s “Livonian Chronicle”; Nikolai Karamzin’s “History of the Russian State”; Alexander Janov’s “Russia: 1462–1584. The Beginning of the Tragedy. Notes of the Nature and Formation of Russian Statehood” etc. In connection with the concept of Riga humanists, another fictitious document created by the writer Dobrovensky himself is especially important, namely, the diary of Johann Birke – Magnus’s interpreter, a person with a double identity, “half-Latvian”, “half-German”. It is a message of an alternative to the well-known historical documents, which allows to turn the Livonian historical narrative in the direction of “letocentrism” and raises the issue of the ethnic identity of Riga’s humanists. Along with the deconstruction of the historically documented image of Livonian King Magnus, the thematic structure of the novel is dominated by identity aspects related to the Livonian historical narrative. Dobrovensky, with his novel, raises an important question – what does the medieval Livonia, Europe’s common intellectual heritage, mean for contemporary Latvia and the human society at large? Dobrovensky’s work is also a significant challenge in strengthening emotional ties with Livonia (which were weakened in the early stages of national historiography due to conflicts over the founding of nation-states).


2005 ◽  
Vol 32 (1) ◽  
pp. 159-163 ◽  
Author(s):  
Duan Wei

Beijing is located in a semiarid region, and water shortage is a common problem in the city. Along with the rapid increase in water demand, due to fast socioeconomic development and an increase in population, a shortage of water resources and a deterioration of the water environment have become obstacles to sustainable socioeconomic development in Beijing. In the long run, sustainable water resources management, water conservation, and completion of the south to north water diversion project will solve the problem. This paper introduces the water resources situation in Beijing; analyzes future water demand; and discusses the actions of water saving, nontraditional water resources exploitation, wetland construction, and water environment protection. The paper also explains the importance of the south to north water diversion project and the general layout of the water supply strategy, water distribution system, and methods to efficiently use the diverted water in Beijing.Key words: water resources, water supply, water saving, water recycling, water diversion.


2018 ◽  
Vol 47 (6) ◽  
pp. 1047-1064
Author(s):  
Sanaz Alaei Moghadam ◽  
Mohammad Karimi ◽  
Kyoumars Habibi

Interactions between cities play a significant role in the development of metropolitan regions. Although these interactions and their role in the urban growth modelling have already been investigated, there is still room for more studies. In this research, in addition to conventional urban growth factors, spatial interactions between the cities (SIBC) are incorporated into urban growth modelling. This causes directional trends in urban growth (DTUG). Therefore, first the DTUG of each city was measured using a developed indicator based on the history of urban growth that was extracted from satellite images and spatial statistics. The SIBC was then estimated by integrating the DTUG of the cities. Finally, the SIBC and other driving forces, including the physical suitability, accessibility and neighbourhood effects, were integrated using a cellular automata-based model. The accuracy of the model in the Tehran metropolitan region was increased by 6.44% after considering the SIBC. The analysis of the DTUG and SIBC in the Tehran metropolitan region during 1991–2000–2007–2014 revealed specific patterns as the spatial interactions intensified over time and usually peaked in the periphery of the central business districts and intense interactions existed between the metropolises and other major cities. These findings could help urban managers with strategic decision-making in the metropolitan regions and adjust the science and practice relation in this field.


2011 ◽  
Vol 35 (1) ◽  
pp. 21-27 ◽  
Author(s):  
Tomas Grunskis

While analysing creative experiments in architecture, one finds a number of different phenomena and examples, not so easy to discuss in a more or less systematic way. These phenomena and results, in one or another way related to experimental architecture, can hardly be defined by a single category and, as shown by the history of architecture, have become one of its driving forces contributing to the development of architecture in the course of time. The issue of the concepts of architectural experimentation on the whole is important and urgent in two aspects. First of all, such concepts are used in attempting to formulate basic architectural and cultural declarations, consequentially applied in forming and proclaiming different political creeds (usual practice of international architectural biennales and expo exhibitions). Secondly, their cultural value is of key importance too, as the ideas and thoughts expressed through the experimental creation often convey social aspects and states, also the idea, how architecture is understood during a specific period of time and the role given to it by society. Finally, as architecture is a language used by society to convey its socio-cultural status and values, the experimental architectural creation can be significant, although often ignored, in architectural practice. The most outstanding examples of architectural experiments confirm that architecture as artistic creation has long ago gained certain features of a cultural phenomenon, which eventually has become closely connected to society. Thus the area of culture and forms of its expression has becoming more and more relevant and significant to architectural experimentation. Although artistic and scientific experiments have certain similarities within contemporary discourse of architectural practices, they still differ a lot in the aspects of their backgrounds, processes and even results. But still, the interdisciplinary aspect, common to contemporary artistic experimentation, draws art and science closer together. Fairly often, peculiar new forms of art borrow scientific data or ideas interpreting, expressing and using them effectively to make pure art. The concept of architectural experimentation still does not exist as an integral concept. Only a few general features and attributes can be named as helping to define the architectural phenomenon as an experimental one. These are: (a) the idealistic trend and (b) very active element of motivation. It is also noteworthy that looking retrospectively, within different epochs the architectural experimentation had different relationship with other arts. The discussed in the article experimental practices of architecture in the 1950-ies – 1970-ies accumulated and effectively operated the languages of other visual – and not only – arts. Although, at the same time it should be admitted that they did not have the same close relationship to traditional, fundamental arts, such as sculpture and painting. So does the contemporary, the 21st century, architectural experimentation – it no longer has closer connection to traditional arts. Although it has to be admitted that the most recent, media-related arts influence experimental architecture on the levels of its forms as well as concepts. In general, the architectural creation at the beginning of the 21st century (both building architecture and urban planning) is getting more and more social. The experiment in such creation is less artistic or valuable as pure art in the traditional sense. Fewer experiments are made on the form only, but rather on the process itself and then – the form. Although the most innovative architectural images being developed and declared are getting more abstract and universal, they are easier to implement than before (due to the most advanced technologies). So, it is not so simple to draw a dividing line between purely idealistic and realistic experimental architecture, because what was just a vision not so long ago, today can be easily realized. Does it mean that experiments have become more social and less creative? Probably, not. Most likely, it’s because creativity has become transformable and gained new ways of expression. Santrauka Straipsnyje analizuojamos esminės kūrybinio eksperimento sampratos architektūroje. Apžvelgiami pagrindiniai mokslinio ir meninio eksperimento principai, konceptai juos charakterizuojant bei lyginant tarpinternatvyje, detalizuojant tiek esminius skirtumus, tiek ir logines sąsajas tarp vienų ir kitų. Taip pat tekste plačiai analizuojamas kūrybinio eksperimento reiškinys architektūroje, aptariant ir mokslinės, ir meninės sričių įtakas jam, jo specifikas ir ypatumus.


2014 ◽  
Vol 70 (11) ◽  
pp. 1774-1781 ◽  
Author(s):  
Yifan Ding ◽  
Deshan Tang ◽  
Yuhang Wei ◽  
Sun Yin

Water resources in many urban areas are under enormous stress due to large-scale urban expansion and population explosion. The decision-makers are often faced with the dilemma of either maintaining high economic growth or protecting water resources and the environment. Simple criteria of water supply and drainage do not reflect the requirement of integrated urban water management. The Urban-Water Harmony (UWH) model is based on the concept of harmony and offers a more integrated approach to urban water management. This model calculates four dimensions, namely urban development, urban water services, water–society coordination, and water environment coordination. And the Analytic Hierarchy Process has been used to determine the indices weights. We applied the UWH model to Beijing, China for an 11-year assessment. Our findings show that, despite the severe stress inherent in rapid development and water shortage, the urban water relationship of Beijing is generally evolving in a positive way. The social–economic factors such as the water recycling technologies contribute a lot to this change. The UWH evaluation can provide a reasonable analysis approach to combine various urban and water indices to produce an integrated and comparable evaluation index. This, in turn, enables more effective water management in decision-making processes.


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