scholarly journals Characterization of Leachate and Its Impact on Surface and Groundwater Quality of a Closed Dumpsite – A Case Study at Dhapa, Kolkata, India

2016 ◽  
Vol 35 ◽  
pp. 391-399 ◽  
Author(s):  
S.K. Maiti ◽  
S. De ◽  
T. Hazra ◽  
A. Debsarkar ◽  
A. Dutta
Keyword(s):  
Groundwater Quality ◽  
Surface And Groundwater

Spatio-temporal distribution and chemical characterization of groundwater quality of a wastewater irrigated system: A case study

2018 ◽  
Vol 636 ◽  
pp. 1089-1098 ◽  
Author(s):  
Mahesh Jampani ◽  
Stephan Huelsmann ◽  
Rudolf Liedl ◽  
Sahebrao Sonkamble ◽  
Shakeel Ahmed ◽  
...  
Keyword(s):  
Groundwater Quality ◽  
Temporal Distribution ◽  
Chemical Characterization ◽  
System A ◽  
Spatio Temporal

Dynamic-SoS: An Approach for the Simulation of Systems-of-Systems Dynamic Architectures

2019 ◽  
Vol 63 (5) ◽  
pp. 709-731
Author(s):  
Wallace Manzano ◽  
Valdemar Vicente Graciano Neto ◽  
Elisa Yumi Nakagawa
Keyword(s):  
Architectural Design ◽  
Systems Of Systems ◽  
Dynamic Architecture ◽  
Design Time ◽  
Operation Results ◽  
The Impact ◽  
Reconfiguration Controller

Abstract Systems-of-Systems (SoS) combine heterogeneous, independent systems to offer complex functionalities for highly dynamic smart applications. Besides their dynamic architecture with continuous changes at runtime, SoS should be reliable and work without interrupting their operation and with no failures that could cause accidents or losses. SoS architectural design should facilitate the prediction of the impact of architectural changes and potential failures due to SoS behavior. However, existing approaches do not support such evaluation. Hence, these systems have been usually built without a proper evaluation of their architecture. This article presents Dynamic-SoS, an approach to predict/anticipate at design time the SoS architectural behavior at runtime to evaluate whether the SoS can sustain their operation. The main contributions of this approach comprise: (i) characterization of the dynamic architecture changes via a set of well-defined operators; (ii) a strategy to automatically include a reconfiguration controller for SoS simulation; and (iii) a means to evaluate architectural configurations that an SoS could assume at runtime, assessing their impact on the viability of the SoS operation. Results of our case study reveal Dynamic-SoS is a promising approach that could contribute to the quality of SoS by enabling prior assessment of its dynamic architecture.

scholarly journals Physical–chemical evaluation of groundwater quality in semi-arid areas: case study—Sabzevar plain, Iran

2021 ◽  
Vol 7 (6) ◽  
Author(s):  
Ghasem Panahi ◽  
Mahya Hassanzadeh Eskafi ◽  
Hamidreza Rahimi ◽  
Alireza Faridhosseini ◽  
Xiaonan Tang
Keyword(s):  
Water Resources ◽  
Groundwater Quality ◽  
High Salinity ◽  
Groundwater Resources ◽  
Arid Areas ◽  
Agricultural Use ◽  
Anions And Cations ◽  
Semi Arid

AbstractGroundwater is one of the most important water sources in arid and semi-arid areas. With the increasing world population and the water demand for agriculture and urban use, the need for water resources has increased, especially in arid and semi-arid regions, where groundwater resources play a significant role. To prevent the pollution of groundwater resources, various studies for their preservation and maintenance should be carried out, including a detailed plan for proper management of water resources and establishing a balance between water quality and how to use them. It becomes important to understand the spatial change of the quality of groundwater resources. In this study, Sabzevar plain, a typical region of semi-arid climate in Iran, was selected as a case study to assess the groundwater quality of the region, using data from 24 observation wells between 2015 and 2019. Using Arc GIS software, a map of groundwater quality parameters in the study area was prepared for quality assessment and comparison with existing international standards. The results showed that (except pH and HCO3−) the concentration of Sodium, Magnesium, and other anions and cations is higher than the corresponding WHO standard limit, suggesting that the study area is unsuitable for drinking and agricultural use. According to the Wilcox chart, 87.5% of the samples are in the C4S4 class while 8.33% are in the C4S3 class, showing the groundwater unsuitable for agricultural use due to its high salinity and alkalinity. Piper diagrams show that more than 50% of the samples are non-carbonate alkalis, indicating a very high salinity in the area. According to the pie chart, chlorine ion and sodium ion are the dominant anions and cations in the Sabzevar plain, respectively. The Schuler diagram shows that none of the samples examined were in a good class for drinking. Therefore, considering the importance of water for agricultural activities in the study area, it is recommended to have agricultural management solutions to prevent groundwater mixing with freshwater resources.

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