scholarly journals Collect and Treat Urban Wastewater to Fight the Pandemic Disease of COVID-19 Effectively

2021 ◽  
Author(s):  
Abdol Aziz Shahraki
Keyword(s):  
Mathematical Modeling ◽  
Treatment Technique ◽  
Urban Wastewater ◽  
Statistical Procedures ◽  
Untreated Wastewater ◽  
Innovative Idea ◽  
Wastewater Stabilization Ponds ◽  
Wastewater Collection

This paper presents multidisciplinary and innovative research concerning fighting against coronavirus through wastewater collection and treatment. Studies suggest that coronavirus exists in the wastewaters. Untreated wastewater is proved to spread the virus. Coronavirus is attacking people globally and shrinking the economy. This paper highlights the idea that the coronavirus shall be defeated with the help of wastewater collection and treatment as well. The question addressed by this paper is will communities defeat the coronavirus without well-collected and treated wastewaters? This research aims to display the role of wastewaters in the spread of coronavirus in cities and to require their collection. The methods to achieve the goals are theoretical surveys, case study strategy, mathematical modeling, statistical procedures, forecasting of future, and dialectical discussions. The findings of this research demonstrate the need for carefully collected and treated wastewaters to overcome the coronavirus. This paper gives suitable techniques to collect and treat wastewater such as wastewater stabilization ponds, bacterial reactors, and anaerobic ponds. The innovative idea of this paper, its suggested indicators to select a certain wastewater treatment technique in every city, and its outcome will assist the global community to fight the coronavirus more effectively.

scholarly journals Collect and Treat Urban Wastewater to Fight the Pandemic Disease of COVID-19 Effectively

2020 ◽  
Author(s):  
Abdol Aziz Shahraki
Keyword(s):  
Mathematical Modeling ◽  
Treatment Technique ◽  
Urban Wastewater ◽  
Statistical Procedures ◽  
Untreated Wastewater ◽  
Innovative Idea ◽  
Wastewater Stabilization Ponds ◽  
Wastewater Collection

This paper presents multidisciplinary and innovative research concerning fighting against coronavirus through wastewater collection and treatment. Studies suggest that coronavirus exists in the wastewaters. Untreated wastewater is proved to spread the virus. Coronavirus is attacking people globally and shrinking the economy. This paper highlights the idea that the coronavirus shall be defeated with the help of wastewater collection and treatment as well. The question addressed by this paper is will communities defeat the coronavirus without well-collected and treated wastewaters? This research aims to display the role of wastewaters in the spread of coronavirus in cities and to require their collection. The methods to achieve the goals are theoretical surveys, case study strategy, mathematical modeling, statistical procedures, forecasting of future, and dialectical discussions. The findings of this research demonstrate the need for carefully collected and treated wastewaters to overcome the coronavirus. This paper gives suitable techniques to collect and treat wastewater such as wastewater stabilization ponds, bacterial reactors, and anaerobic ponds. The innovative idea of this paper, its suggested indicators to select a certain wastewater treatment technique in every city, and its outcome will assist the global community to fight the coronavirus more effectively.

scholarly journals Managing urban wastewater to fight the pandemic of COVID-19 effectively

2021 ◽  
Vol 3 (1) ◽  
pp. 141-151
Author(s):  
Abdol Aziz Shahraki ◽  
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Future Trend ◽  
Wastewater Management ◽  
Treatment Technique ◽  
Urban Wastewater ◽  
Statistical Procedures ◽  
The Future

The paper reveals the role of wastewaters in the spread of Coronavirus in cities and focuses on the need for collection, treatment, and management of wastewaters. While the focus of the fight against COVID-19 is on the production of vaccines, drugs and treatments, this article emphasizes the cleanliness of the environment with wastewater management. This paper is a novel work, since it presents a multi-side research concerning fighting against coronavirus through wastewater collection and treatment. Studies show that coronavirus exists in urban wastewaters and spread the COVID-19 everywhere. Coronavirus is attacking people globally and shrinking the economy. The question addressed by this paper is; will communities overcome the coronavirus without well-collected and treated wastewaters? The methods to achieve the goals are theoretical surveys, case study strategy, mathematical modeling, statistical procedures, forecasting the future, and discussions. A mathematical model will be built to calculate the number of deaths caused by the coronavirus with the help of registered statistics and predict the future trend of the disease pandemic in Iran. Since Coronavirus has been seen in wastewaters, results of this research demonstrate the need for carefully collected and treated wastewaters to overcome the coronavirus. This paper gives suitable techniques to treat wastewater as stabilization ponds, bacterial reactors, and anaerobic ponds. Concluding, this paper suggests indicators to select a wastewater treatment technique in every city, and its outcome will assist the global community in fighting the coronavirus more successfully.

Exploring the venture capitalist – entrepreneur relationship: evidence from India

2016 ◽  
Vol 23 (1) ◽  
pp. 64-89 ◽  
Author(s):  
Swati Panda ◽  
Shridhar Dash
Keyword(s):  
Venture Capitalist ◽  
Treatment Technique ◽  
Control Mechanisms ◽  
Content Type ◽  
Secondary Sources ◽  
Study Approach ◽  
Rich Description ◽  
Multiple Case

Purpose – Maintaining cooperation and avoiding opportunism is essential for a healthy venture capitalist (VC) – entrepreneur relationship. Therefore, the purpose of this paper is to explore the role of control and trust for developing a cooperative VC-entrepreneur relationship in an agency environment in the Indian context. Design/methodology/approach – The study adopts a multiple case study approach to investigate ten VC-entrepreneur dyads. It uses data collected from both primary and secondary sources. Content analysis was used as the data treatment technique. Findings – The empirical evidence indicates that VC-entrepreneur relationships emerging in the early stages suffer from low agency risks and use more of relational mechanisms to curb opportunism and develop cooperation while relationships at an advanced stage suffer from higher agency risks and employ more of control mechanisms to address it. Practical implications – The findings can be utilized to enhance cooperation in VC-entrepreneur relationship by identifying the appropriate context to apply relational or control mechanisms, which would eventually lead to better performance of the venture. Originality/value – This distinction results in the development of a theoretical model which shows how the dual governance mechanisms of control and trust interact with one another to affect confidence in partner cooperation as an entrepreneurial venture raises multiple rounds of venture capital across various stages. The data collected from Indian VC-entrepreneur dyads offers a rich description of the relationship dynamics across the Indian entrepreneurial ecosystem.

scholarly journals Facultative Stabilization Pond: Measuring Biological Oxygen Demand using Mathematical Approaches

2018 ◽  
Vol 31 ◽  
pp. 05009
Author(s):  
Ihsan Wira S ◽  
Sunarsih Sunarsih
Keyword(s):  
Mathematical Modeling ◽  
Organic Matter ◽  
Oxygen Demand ◽  
Biological Oxygen Demand ◽  
Tolerance Limit ◽  
Mathematical Approach ◽  
Modeling Methods ◽  
Untreated Wastewater ◽  
Stabilization Ponds ◽  
Wastewater Stabilization Ponds

Pollution is a man-made phenomenon. Some pollutants which discharged directly to the environment could create serious pollution problems. Untreated wastewater will cause contamination and even pollution on the water body. Biological Oxygen Demand (BOD) is the amount of oxygen required for the oxidation by bacteria. The higher the BOD concentration, the greater the organic matter would be. The purpose of this study was to predict the value of BOD contained in wastewater. Mathematical modeling methods were chosen in this study to depict and predict the BOD values contained in facultative wastewater stabilization ponds. Measurements of sampling data were carried out to validate the model. The results of this study indicated that a mathematical approach can be applied to predict the BOD contained in the facultative wastewater stabilization ponds. The model was validated using Absolute Means Error with 10% tolerance limit, and AME for model was 7.38% (< 10%), so the model is valid. Furthermore, a mathematical approach can also be applied to illustrate and predict the contents of wastewater.

The role of multiplicity in a cult: A case study

1987 ◽  
Author(s):  
William A. Worrall ◽  
Ann W. Stockman

Endangered Butterflies and their Non-Native Host Plants: Examining Shifting Values of Belonging in Restoration

2019 ◽  
Vol 3 (1) ◽  
pp. 1-9
Author(s):  
Robert M. Anderson ◽  
Amy M. Lambert
Keyword(s):  
Ecological Restoration ◽  
Native Species ◽  
Puget Sound ◽  
A Value ◽  
The Social ◽  
Remote Island ◽  
Scientific Truth ◽  
Native Host

The island marble butterfly (Euchloe ausonides insulanus), thought to be extinct throughout the 20th century until re-discovered on a single remote island in Puget Sound in 1998, has become the focus of a concerted protection effort to prevent its extinction. However, efforts to “restore” island marble habitat conflict with efforts to “restore” the prairie ecosystem where it lives, because of the butterfly’s use of a non-native “weedy” host plant. Through a case study of the island marble project, we examine the practice of ecological restoration as the enactment of particular norms that define which species are understood to belong in the place being restored. We contextualize this case study within ongoing debates over the value of “native” species, indicative of deep-seated uncertainties and anxieties about the role of human intervention to alter or manage landscapes and ecosystems, in the time commonly described as the “Anthropocene.” We interpret the question of “what plants and animals belong in a particular place?” as not a question of scientific truth, but a value-laden construct of environmental management in practice, and we argue for deeper reflexivity on the part of environmental scientists and managers about the social values that inform ecological restoration.

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